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  • 1
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    Disrupted timing of discontinuous but not continuous movements by cerebellar lesions (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-05-31
    Beschreibung: Patients with cerebellar damage are known to exhibit deficits in the temporal control of movements. We report that these deficits are restricted to discontinuous movements. Cerebellar patients exhibited no deficit in temporal variability when producing continuous, rhythmic movements. We hypothesize that the temporal properties of continuous movements are emergent and reflect the operation of other control parameters not associated with the cerebellum. In contrast, discontinuous movements require an explicit representation of the temporal goal, a function of the cerebellum. The requirement for explicit temporal representation provides a parsimonious account of cerebellar involvement in a range of tasks.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spencer, Rebecca M C -- Zelaznik, Howard N -- Diedrichsen, Jorn -- Ivry, Richard B -- NS17778/NS/NINDS NIH HHS/ -- NS30256/NS/NINDS NIH HHS/ -- NS40813/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2003 May 30;300(5624):1437-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychology, University of California, Berkeley, 3210 Tolman Hall #1650, Berkeley, CA 94720, USA. rspencer@socrates.berkeley.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12775842" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Aged ; Aged, 80 and over ; Cerebellar Diseases/*physiopathology ; Cerebellum/physiology/*physiopathology ; Female ; Humans ; Male ; Middle Aged ; *Motor Activity ; Movement ; *Psychomotor Performance ; Spinocerebellar Degenerations/*physiopathology ; Time Factors
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 2
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    Retrograde viral delivery of IGF-1 prolongs survival in a mouse ALS model (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-08-09
    Beschreibung: Amyotrophic lateral sclerosis (ALS) is a progressive, lethal neuromuscular disease that is associated with the degeneration of spinal and brainstem motor neurons, leading to atrophy of limb, axial, and respiratory muscles. The cause of ALS is unknown, and there is no effective therapy. Neurotrophic factors are candidates for therapeutic evaluation in ALS. Although chronic delivery of molecules to the central nervous system has proven difficult, we recently discovered that adeno-associated virus can be retrogradely transported efficiently from muscle to motor neurons of the spinal cord. We report that insulin-like growth factor 1 prolongs life and delays disease progression, even when delivered at the time of overt disease symptoms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaspar, Brian K -- Llado, Jeronia -- Sherkat, Nushin -- Rothstein, Jeffrey D -- Gage, Fred H -- AG12992/AG/NIA NIH HHS/ -- AG21876/AG/NIA NIH HHS/ -- NS33958/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2003 Aug 8;301(5634):839-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Genetics, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12907804" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amyotrophic Lateral Sclerosis/pathology/physiopathology/*therapy ; Animals ; Apoptosis ; Base Sequence ; Caspase 9 ; Caspases/metabolism ; Cell Count ; Dependovirus/*genetics ; Disease Models, Animal ; Disease Progression ; Gene Transfer Techniques ; *Genetic Therapy ; *Genetic Vectors/administration & dosage ; Glial Cell Line-Derived Neurotrophic Factor ; Green Fluorescent Proteins ; Insulin-Like Growth Factor I/*genetics ; Luminescent Proteins/genetics ; Male ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; Motor Neurons/pathology/virology ; Muscle, Skeletal/virology ; Nerve Growth Factors/genetics ; *Protein-Serine-Threonine Kinases ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-akt ; Random Allocation ; Spinal Cord/chemistry/pathology/virology ; Superoxide Dismutase/genetics/metabolism ; Ubiquitin/analysis
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 3
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    Evolutionary discrimination of mammalian conserved non-genic sequences (CNGs) (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-10-04
    Beschreibung: Analysis of the human and mouse genomes identified an abundance of conserved non-genic sequences (CNGs). The significance and evolutionary depth of their conservation remain unanswered. We have quantified levels and patterns of conservation of 191 CNGs of human chromosome 21 in 14 mammalian species. We found that CNGs are significantly more conserved than protein-coding genes and noncoding RNAS (ncRNAs) within the mammalian class from primates to monotremes to marsupials. The pattern of substitutions in CNGs differed from that seen in protein-coding and ncRNA genes and resembled that of protein-binding regions. About 0.3% to 1% of the human genome corresponds to a previously unknown class of extremely constrained CNGs shared among mammals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dermitzakis, Emmanouil T -- Reymond, Alexandre -- Scamuffa, Nathalie -- Ucla, Catherine -- Kirkness, Ewen -- Rossier, Colette -- Antonarakis, Stylianos E -- New York, N.Y. -- Science. 2003 Nov 7;302(5647):1033-5. Epub 2003 Oct 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Medical Genetics and National Center of Competence in Research (NCCR) Frontiers in Genetics, University of Geneva Medical School and University Hospitals, 1211 Geneva, Switzerland. Emmanouil.Dermitzakis@medecine.unige.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14526086" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Chromosomes, Human, Pair 21/*genetics ; Chromosomes, Mammalian/*genetics ; *Conserved Sequence ; DNA, Intergenic/*genetics ; Discriminant Analysis ; *Evolution, Molecular ; Female ; Genetic Code ; Genome ; Humans ; Male ; Mammals/*genetics ; Molecular Sequence Data ; Polymerase Chain Reaction ; Proteins/genetics ; RNA, Untranslated/genetics ; Selection, Genetic ; Sequence Alignment ; Species Specificity ; Time ; Transcription, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 4
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    Mutations in dynein link motor neuron degeneration to defects in retrograde transport (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-05-06
    Beschreibung: Degenerative disorders of motor neurons include a range of progressive fatal diseases such as amyotrophic lateral sclerosis (ALS), spinal-bulbar muscular atrophy (SBMA), and spinal muscular atrophy (SMA). Although the causative genetic alterations are known for some cases, the molecular basis of many SMA and SBMA-like syndromes and most ALS cases is unknown. Here we show that missense point mutations in the cytoplasmic dynein heavy chain result in progressive motor neuron degeneration in heterozygous mice, and in homozygotes this is accompanied by the formation of Lewy-like inclusion bodies, thus resembling key features of human pathology. These mutations exclusively perturb neuron-specific functions of dynein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hafezparast, Majid -- Klocke, Rainer -- Ruhrberg, Christiana -- Marquardt, Andreas -- Ahmad-Annuar, Azlina -- Bowen, Samantha -- Lalli, Giovanna -- Witherden, Abi S -- Hummerich, Holger -- Nicholson, Sharon -- Morgan, P Jeffrey -- Oozageer, Ravi -- Priestley, John V -- Averill, Sharon -- King, Von R -- Ball, Simon -- Peters, Jo -- Toda, Takashi -- Yamamoto, Ayumu -- Hiraoka, Yasushi -- Augustin, Martin -- Korthaus, Dirk -- Wattler, Sigrid -- Wabnitz, Philipp -- Dickneite, Carmen -- Lampel, Stefan -- Boehme, Florian -- Peraus, Gisela -- Popp, Andreas -- Rudelius, Martina -- Schlegel, Juergen -- Fuchs, Helmut -- Hrabe de Angelis, Martin -- Schiavo, Giampietro -- Shima, David T -- Russ, Andreas P -- Stumm, Gabriele -- Martin, Joanne E -- Fisher, Elizabeth M C -- New York, N.Y. -- Science. 2003 May 2;300(5620):808-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurodegenerative Disease, Institute of Neurology, National Hospital for Neurology and Neurosurgery, Queen Square, London WC1N 3BG, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12730604" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Anterior Horn Cells/pathology ; Apoptosis ; *Axonal Transport ; Cell Differentiation ; Cell Movement ; Central Nervous System/embryology ; Chromosome Mapping ; Dimerization ; Dyneins/chemistry/*genetics/*physiology ; Female ; Ganglia, Spinal/pathology ; Golgi Apparatus/metabolism/ultrastructure ; Heterozygote ; Homozygote ; Lewy Bodies/pathology ; Male ; Mice ; Mice, Inbred C3H ; Mice, Inbred C57BL ; Motor Neuron Disease/*genetics/pathology/physiopathology ; Motor Neurons/*physiology/ultrastructure ; Mutation ; Mutation, Missense ; *Nerve Degeneration ; Peptide Fragments/metabolism ; Phenotype ; Point Mutation ; Spinal Nerves/growth & development ; Tetanus Toxin/metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 5
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    Common structure of soluble amyloid oligomers implies common mechanism of pathogenesis (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-04-19
    Beschreibung: Soluble oligomers are common to most amyloids and may represent the primary toxic species of amyloids, like the Abeta peptide in Alzheimer's disease (AD). Here we show that all of the soluble oligomers tested display a common conformation-dependent structure that is unique to soluble oligomers regardless of sequence. The in vitro toxicity of soluble oligomers is inhibited by oligomer-specific antibody. Soluble oligomers have a unique distribution in human AD brain that is distinct from fibrillar amyloid. These results indicate that different types of soluble amyloid oligomers have a common structure and suggest they share a common mechanism of toxicity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kayed, Rakez -- Head, Elizabeth -- Thompson, Jennifer L -- McIntire, Theresa M -- Milton, Saskia C -- Cotman, Carl W -- Glabe, Charles G -- AG00538/AG/NIA NIH HHS/ -- AG16573/AG/NIA NIH HHS/ -- NS31230/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2003 Apr 18;300(5618):486-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Biochemistry, University of California, Irvine, CA 92697-3900, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12702875" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aged ; Aged, 80 and over ; Alzheimer Disease/metabolism/pathology ; Amyloid/chemistry/toxicity ; Amyloid beta-Peptides/analysis/*chemistry/immunology/toxicity ; Animals ; Antibodies/immunology ; Antibody Specificity ; Biopolymers/analysis/chemistry/toxicity ; Brain/pathology ; Brain Chemistry ; Cell Survival ; Humans ; Microscopy, Confocal ; Microscopy, Electron ; Molecular Mimicry ; Neurofibrillary Tangles/chemistry ; Peptide Fragments/chemistry/immunology ; Protein Conformation ; Rabbits ; Solubility ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 6
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    Altered patterns of sleep and behavioral adaptability in NPAS2-deficient mice (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-07-05
    Beschreibung: Animal behavior is synchronized to the 24-hour light:dark (LD) cycle by regulatory programs that produce circadian fluctuations in gene expression throughout the body. In mammals, the transcription factor CLOCK controls circadian oscillation in the suprachiasmatic nucleus of the brain; its paralog, neuronal PAS domain protein 2 (NPAS2), performs a similar function in other forebrain sites. To investigate the role of NPAS2 in behavioral manifestations of circadian rhythm, we studied locomotor activity, sleep patterns, and adaptability to both light- and restricted food-driven entrainment in NPAS2-deficient mice. Our results indicate that NPAS2 plays a substantive role in maintaining circadian behaviors in normal LD and feeding conditions and that NPAS2 is critical for adaptability to food restriction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dudley, Carol A -- Erbel-Sieler, Claudia -- Estill, Sandi Jo -- Reick, Martin -- Franken, Paul -- Pitts, SiNae -- McKnight, Steven L -- 37919/PHS HHS/ -- 4R37 MH59388/MH/NIMH NIH HHS/ -- 5T3DK07328/DK/NIDDK NIH HHS/ -- HL 64148/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2003 Jul 18;301(5631):379-83. Epub 2003 Jul 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9152, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12843397" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Adaptation, Physiological ; Animals ; Basic Helix-Loop-Helix Transcription Factors ; Behavior, Animal ; Biological Clocks/*physiology ; Body Weight ; CLOCK Proteins ; Circadian Rhythm/*physiology ; Crosses, Genetic ; Darkness ; Eating ; Electroencephalography ; Electromyography ; Female ; Food ; Gene Targeting ; Light ; Male ; Mice ; Mice, Inbred C57BL ; *Motor Activity ; Nerve Tissue Proteins/genetics/*physiology ; Prosencephalon/physiology ; *Sleep ; Suprachiasmatic Nucleus/physiology ; Trans-Activators/genetics/physiology ; Transcription Factors/genetics/*physiology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 7
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    Psychology. Evolution of the social brain (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-11-15
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dunbar, Robin -- New York, N.Y. -- Science. 2003 Nov 14;302(5648):1160-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Biological Sciences, University of Liverpool, Liverpool L69 7ZB, UK. rimd@liv.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14615522" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Wild ; *Biological Evolution ; *Cognition ; Endorphins/physiology ; Female ; Grooming ; Hierarchy, Social ; Language ; Neocortex/anatomy & histology/physiology ; Papio/physiology/*psychology ; *Reproduction ; *Social Behavior ; Social Dominance ; Social Support ; Vocalization, Animal
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 8
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    Rapid evolution of egg size in captive salmon (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-03-15
    Beschreibung: Captive breeding and release programs, widely used to supplement populations of declining species, minimize juvenile mortality to achieve rapid population growth. However, raising animals in benign environments may promote traits that are adaptive in captivity but maladaptive in nature. In chinook salmon, hatchery rearing relaxes natural selection favoring large eggs, allowing fecundity selection to drive exceptionally rapid evolution of small eggs. Trends toward small eggs are also evident in natural populations heavily supplemented by hatcheries, but not in minimally supplemented populations. Unintentional selection in captivity can lead to rapid changes in critical life-history traits that may reduce the success of supplementation or reintroduction programs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Heath, Daniel D -- Heath, John W -- Bryden, Colleen A -- Johnson, Rachel M -- Fox, Charles W -- New York, N.Y. -- Science. 2003 Mar 14;299(5613):1738-40.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Great Lakes Institute for Environmental Research and Department of Biological Sciences, University of Windsor, 401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada. dheath@uwindsor.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12637746" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Biological Evolution ; Body Constitution ; Body Weight ; *Breeding ; Conservation of Natural Resources ; Environment ; Female ; Fertility ; *Fisheries ; Ovum/*physiology ; Salmon/genetics/*physiology ; Selection, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 9
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    Ecology. New count of old whales adds up to big debate (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-07-26
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lubick, Naomi -- New York, N.Y. -- Science. 2003 Jul 25;301(5632):451.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12881542" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Atlantic Ocean ; Conservation of Natural Resources ; DNA, Mitochondrial/genetics ; *Ecosystem ; Female ; Genetic Variation ; Genetics, Population ; Male ; Mutation ; Population Density ; Population Dynamics ; Time Factors ; *Whales/genetics
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 10
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    Whales before whaling in the North Atlantic (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-07-26
    Beschreibung: It is well known that hunting dramatically reduced all baleen whale populations, yet reliable estimates of former whale abundances are elusive. Based on coalescent models for mitochondrial DNA sequence variation, the genetic diversity of North Atlantic whales suggests population sizes of approximately 240,000 humpback, 360,000 fin, and 265,000 minke whales. Estimates for fin and humpback whales are far greater than those previously calculated for prewhaling populations and 6 to 20 times higher than present-day population estimates. Such discrepancies suggest the need for a quantitative reevaluation of historical whale populations and a fundamental revision in our conception of the natural state of the oceans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roman, Joe -- Palumbi, Stephen R -- New York, N.Y. -- Science. 2003 Jul 25;301(5632):508-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Organismic and Evolutionary Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12881568" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Atlantic Ocean ; Base Sequence ; Conservation of Natural Resources ; DNA, Mitochondrial/genetics ; *Ecosystem ; Female ; Genetic Variation ; Genetics, Population ; Male ; Molecular Sequence Data ; Population Density ; Population Dynamics ; Time Factors ; *Whales/classification/genetics
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 11
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    Arctic ecology. For precarious populations, pollutants present new perils (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-03-15
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Webster, Paul -- New York, N.Y. -- Science. 2003 Mar 14;299(5613):1642.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12637710" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Arctic Regions ; Canada ; *Ecosystem ; Environmental Exposure/*adverse effects ; Environmental Pollutants/*analysis ; Female ; Humans ; Infant ; Infection/epidemiology/etiology ; *Inuits ; Memory ; Risk Factors
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 12
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    A heterozygote advantage (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-10-04
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hedrick, Philip W -- New York, N.Y. -- Science. 2003 Oct 3;302(5642):57.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14526061" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Ethnic Groups/*genetics ; Female ; Genetic Variation ; Genotype ; Haplotypes ; *Heterozygote ; Humans ; Kuru/*genetics ; Male ; Middle Aged ; Papua New Guinea ; PrPC Proteins/*genetics ; *Selection, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 13
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    Genetics and medicine. Putting gene arrays to the test (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-04-12
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Branca, Malorye -- New York, N.Y. -- Science. 2003 Apr 11;300(5617):238.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12690165" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Breast Neoplasms/*classification/*genetics/therapy ; Clinical Trials as Topic ; Female ; *Gene Expression Profiling ; Humans ; Netherlands ; *Oligonucleotide Array Sequence Analysis ; Prognosis
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 14
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    Genetic control of surface curvature (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-03-01
    Beschreibung: Although curvature of biological surfaces has been considered from mathematical and biophysical perspectives, its molecular and developmental basis is unclear. We have studied the cin mutant of Antirrhinum, which has crinkly rather than flat leaves. Leaves of cin display excess growth in marginal regions, resulting in a gradual introduction of negative curvature during development. This reflects a change in the shape and the progression of a cell-cycle arrest front moving from the leaf tip toward the base. CIN encodes a TCP protein and is expressed downstream of the arrest front. We propose that CIN promotes zero curvature (flatness) by making cells more sensitive to an arrest signal, particularly in marginal regions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nath, Utpal -- Crawford, Brian C W -- Carpenter, Rosemary -- Coen, Enrico -- New York, N.Y. -- Science. 2003 Feb 28;299(5611):1404-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Developmental Biology, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12610308" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Antirrhinum/cytology/*genetics/*growth & development/metabolism ; Base Sequence ; Cell Cycle ; Cell Differentiation ; Cell Division ; Cell Size ; Cyclin D3 ; Cyclins/genetics/metabolism ; Gene Deletion ; *Gene Expression Regulation, Plant ; *Genes, Plant ; Histones/genetics/metabolism ; Molecular Sequence Data ; Mutagenesis, Insertional ; Mutation ; Plant Leaves/anatomy & histology/cytology/*growth & development/metabolism ; Plant Proteins/chemistry/genetics/metabolism ; Surface Properties ; Transcription Factors/chemistry/genetics/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 15
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    Lamin a truncation in Hutchinson-Gilford progeria (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-04-19
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉De Sandre-Giovannoli, Annachiara -- Bernard, Rafaelle -- Cau, Pierre -- Navarro, Claire -- Amiel, Jeanne -- Boccaccio, Irene -- Lyonnet, Stanislas -- Stewart, Colin L -- Munnich, Arnold -- Le Merrer, Martine -- Levy, Nicolas -- New York, N.Y. -- Science. 2003 Jun 27;300(5628):2055. Epub 2003 Apr 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Inserm U491: Genetique Medicale et Developpement, Faculte de Medecine Timone, Marseille, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12702809" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alleles ; Cell Nucleus/ultrastructure ; Child ; Exons ; Female ; Humans ; Lamin Type A/analysis/*chemistry/*genetics ; Lymphocytes/chemistry/ultrastructure ; Mutation ; Polymorphism, Genetic ; Progeria/blood/*genetics ; RNA Splicing ; RNA, Messenger/genetics ; Sequence Deletion ; Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 16
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    Consensus and ancestral state HIV vaccines (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-03-08
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nickle, David C -- Jensen, Mark A -- Gottlieb, Geoffrey S -- Shriner, Daniel -- Learn, Gerald H -- Rodrigo, Allen G -- Mullins, James I -- New York, N.Y. -- Science. 2003 Mar 7;299(5612):1515-8; author reply 1515-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12624248" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *AIDS Vaccines/immunology ; Base Sequence ; Consensus Sequence ; Evolution, Molecular ; Genes, env ; Genes, gag ; Genetic Variation ; HIV Antigens/genetics/immunology ; HIV-1/classification/*genetics/*immunology ; Humans ; *Phylogeny
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 17
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    Demography of dietary restriction and death in Drosophila (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-09-23
    Beschreibung: Dietary restriction (DR) increases life-span in organisms from yeast to mammals, presumably by slowing the accumulation of aging-related damage. Here we show that in Drosophila, DR extends life-span entirely by reducing the short-term risk of death. Two days after the application of DR at any age for the first time, previously fully fed flies are no more likely to die than flies of the same age that have been subjected to long-term DR. DR of mammals may also reduce short-term risk of death, and hence DR instigated at any age could generate a full reversal of mortality.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mair, William -- Goymer, Patrick -- Pletcher, Scott D -- Partridge, Linda -- New York, N.Y. -- Science. 2003 Sep 19;301(5640):1731-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University College London, Darwin Building, Gower Street, London WC1E 6BT, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14500985" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Aging ; Animals ; *Caloric Restriction ; Demography ; *Diet ; Drosophila/*physiology ; Female ; *Longevity ; Male ; Mortality ; Reproduction ; Risk ; Temperature ; Time Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 18
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    Scanning human gene deserts for long-range enhancers (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-10-18
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nobrega, Marcelo A -- Ovcharenko, Ivan -- Afzal, Veena -- Rubin, Edward M -- HL66728/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2003 Oct 17;302(5644):413.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉U.S. Department of Energy Joint Genome Institute, Walnut Creek, CA 94598, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14563999" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Anura/genetics ; Base Sequence ; Conserved Sequence ; *DNA, Intergenic ; *Drosophila Proteins ; *Enhancer Elements, Genetic ; Evolution, Molecular ; Gene Expression Regulation ; Genes, Reporter ; Humans ; Introns ; Mice ; Mice, Transgenic ; Nuclear Proteins/*genetics ; Synteny ; Takifugu/genetics ; Tetraodontiformes/genetics ; Xenopus/genetics ; Zebrafish/genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 19
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    Low potential for climatic stress adaptation in a rainforest Drosophila species (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-07-05
    Beschreibung: The ability of sensitive rainforest species to evolve in response to climate change is largely unknown. We show that the Australian tropical rainforest fly Drosophila birchii exhibits clinal variation in desiccation resistance, but the most resistant population lacks the ability to evolve further resistance even after intense selection for over 30 generations. Parent-offspring comparisons indicate low heritable variation for this trait but high levels of genetic variation for morphology. D. birchii also exhibits abundant genetic variation at microsatellite loci. The low potential for resistance evolution highlights the importance of assessing evolutionary potential in targeted ecological traits and species from threatened habitats.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoffmann, A A -- Hallas, R J -- Dean, J A -- Schiffer, M -- New York, N.Y. -- Science. 2003 Jul 4;301(5629):100-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Environmental Stress and Adaptation Research, La Trobe University, Bundoora, Victoria 3086, Australia. A.Hoffmann@latrobe.edu.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12843394" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Adaptation, Physiological ; Animals ; Australia ; *Biological Evolution ; *Climate ; Crosses, Genetic ; Dehydration ; Drosophila/*genetics/*physiology ; Ecosystem ; Environment ; Female ; *Genetic Variation ; Geography ; Inbreeding ; Male ; Microsatellite Repeats ; Selection, Genetic ; Trees
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 20
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    Facilitation of spinal NMDA receptor currents by spillover of synaptically released glycine (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-06-28
    Beschreibung: In the mammalian CNS, N-methyl-D-aspartate (NMDA) receptors serve prominent roles in many physiological and pathophysiological processes including pain transmission. For full activation, NMDA receptors require the binding of glycine. It is not known whether the brain uses changes in extracellular glycine to modulate synaptic NMDA responses. Here, we show that synaptically released glycine facilitates NMDA receptor currents in the superficial dorsal horn, an area critically involved in pain processing. During high presynaptic activity, glycine released from inhibitory interneurons escapes the synaptic cleft and reaches nearby NMDA receptors by so-called spillover. In vivo, this process may contribute to the development of inflammatory hyperalgesia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ahmadi, Seifollah -- Muth-Selbach, Uta -- Lauterbach, Andreas -- Lipfert, Peter -- Neuhuber, Winfried L -- Zeilhofer, Hanns Ulrich -- New York, N.Y. -- Science. 2003 Jun 27;300(5628):2094-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut fur Experimentelle und Klinische Pharmakologie und Toxikologie, Universitat Erlangen-Nurnberg, Fahrstrasse 17, D-91054 Erlangen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12829784" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Analgesics/pharmacology ; Animals ; Anterior Horn Cells/drug effects/metabolism ; Diffusion ; Electric Stimulation ; Evoked Potentials/drug effects ; Excitatory Postsynaptic Potentials/drug effects ; Glycine/*metabolism/pharmacology ; In Vitro Techniques ; Interneurons/metabolism ; Neural Inhibition/drug effects ; Opioid Peptides/pharmacology ; Pain Measurement ; Patch-Clamp Techniques ; Posterior Horn Cells/drug effects/*metabolism ; Rats ; Rats, Sprague-Dawley ; Receptors, N-Methyl-D-Aspartate/*metabolism ; Serine/pharmacology ; Spinal Cord/drug effects/metabolism ; Synapses/*metabolism ; *Synaptic Transmission/drug effects ; Temperature
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 21
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    Optical imaging of a tactile illusion in area 3b of the primary somatosensory cortex (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-09-23
    Beschreibung: In the tactile funneling illusion, the simultaneous presentation of brief stimuli at multiple points on the skin produces a single focal sensation at the center of the stimulus pattern even when no physical stimulus occurs at that site. Consistent with the funneling percept, we show with optical imaging in area 3b of the primary somatosensory cortex (SI) that simultaneous stimulation of two fingertips produces a single focal cortical activation between the single fingertip activation regions. Thus, in contrast to traditional views of the body map, topographic representation in the SI reflects the perceived rather than the physical location of peripheral stimulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Li M -- Friedman, Robert M -- Roe, Anna W -- New York, N.Y. -- Science. 2003 Oct 31;302(5646):881-5. Epub 2003 Sep 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Yale University School of Medicine, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14500850" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Animals ; Brain Mapping ; Diagnostic Imaging ; Electrophysiology ; Female ; Fingers ; Humans ; Illusions/*physiology ; Male ; Perception/*physiology ; Physical Stimulation ; Saimiri ; Somatosensory Cortex/*physiology ; Touch/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 22
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    Derepression of BDNF transcription involves calcium-dependent phosphorylation of MeCP2 (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-11-01
    Beschreibung: Mutations in MeCP2, which encodes a protein that has been proposed to function as a global transcriptional repressor, are the cause of Rett syndrome (RT T), an X-linked progressive neurological disorder. Although the selective inactivation of MeCP2 in neurons is sufficient to confer a Rett-like phenotype in mice, the specific functions of MeCP2 in postmitotic neurons are not known. We find that MeCP2 binds selectively to BDNF promoter III and functions to repress expression of the BDNF gene. Membrane depolarization triggers the calcium-dependent phosphorylation and release of MeCP2 from BDNF promoter III, thereby facilitating transcription. These studies indicate that MeCP2 plays a key role in the control of neuronal activity-dependent gene regulation and suggest that the deregulation of this process may underlie the pathology of RT T.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Wen G -- Chang, Qiang -- Lin, Yingxi -- Meissner, Alexander -- West, Anne E -- Griffith, Eric C -- Jaenisch, Rudolf -- Greenberg, Michael E -- HD 18655/HD/NICHD NIH HHS/ -- NS28829/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2003 Oct 31;302(5646):885-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Neuroscience, Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14593183" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Brain-Derived Neurotrophic Factor/*genetics ; Calcium/*metabolism ; Cell Membrane/physiology ; Cells, Cultured ; *Chromosomal Proteins, Non-Histone ; Cloning, Molecular ; CpG Islands ; DNA Methylation ; DNA-Binding Proteins/*metabolism ; Electrophoretic Mobility Shift Assay ; *Gene Expression Regulation ; Gene Silencing ; Histones/metabolism ; Methyl-CpG-Binding Protein 2 ; Methylation ; Mice ; Mice, Knockout ; Neurons/metabolism/physiology ; Phosphorylation ; Potassium Chloride/pharmacology ; Precipitin Tests ; Promoter Regions, Genetic ; Rats ; *Repressor Proteins ; Rett Syndrome/genetics ; *Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 23
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    Ecology and evolution. Darwin's hummingbirds (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-04-26
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Altshuler, Douglas L -- Clark, Christopher James -- New York, N.Y. -- Science. 2003 Apr 25;300(5619):588-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Bioengineering, California Institute of Technology, Pasadena, CA 91104, USA. doug@caltech.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12714728" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Beak/*anatomy & histology ; *Biological Evolution ; Birds/*anatomy & histology/physiology ; Body Constitution ; Dominica ; Ecosystem ; Feeding Behavior ; Female ; Flowers/*anatomy & histology ; Heliconiaceae/*anatomy & histology ; Male ; Pigmentation ; Saint Lucia ; *Sex Characteristics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 24
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    Experience strengthening transmission by driving AMPA receptors into synapses (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-03-08
    Beschreibung: The mechanisms underlying experience-dependent plasticity in the brain may depend on the AMPA subclass of glutamate receptors (AMPA-Rs). We examined the trafficking of AMPA-Rs into synapses in the developing rat barrel cortex. In vivo gene delivery was combined with in vitro recordings to show that experience drives recombinant GluR1, an AMPA-R subunit, into synapses formed between layer 4 and layer 2/3 neurons. Moreover, expression of the GluR1 cytoplasmic tail, a construct that inhibits synaptic delivery of endogenous AMPA-Rs during long-term potentiation, blocked experience-driven synaptic potentiation. In general, synaptic incorporation of AMPA-Rs in vivo conforms to rules identified in vitro and contributes to plasticity driven by natural stimuli in the mammalian brain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Takahashi, Takuya -- Svoboda, Karel -- Malinow, Roberto -- NS032827/NS/NINDS NIH HHS/ -- NS038259/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2003 Mar 7;299(5612):1585-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Jones Laboratory, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12624270" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Electrophysiology ; Gene Transfer Techniques ; Long-Term Potentiation ; *Neuronal Plasticity ; Neurons/*metabolism/virology ; Patch-Clamp Techniques ; Rats ; Receptors, AMPA/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Sindbis Virus/genetics ; Somatosensory Cortex/*metabolism/virology ; Synapses/*metabolism ; *Synaptic Transmission ; Touch ; Vibrissae/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 25
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    Genetics. Where do male genes live? (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-02-01
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schlotterer, Christian -- New York, N.Y. -- Science. 2003 Jan 31;299(5607):670-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut fur Tierzucht und Genetik, Veterinarmedizinische Universitat Wien, 1210 Wien, Austria. christian.schloetterer@vu-wien.ac.at〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12560539" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Anopheles/genetics ; Chromosome Mapping ; Chromosomes/*genetics ; Drosophila melanogaster/*genetics ; Evolution, Molecular ; Female ; *Gene Expression ; Gene Expression Profiling ; *Genes, Insect ; Genes, Recessive ; Genetic Linkage ; Male ; Models, Genetic ; Oligonucleotide Array Sequence Analysis ; Retroelements ; Sex Characteristics ; X Chromosome/*genetics ; Y Chromosome/genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 26
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    Hox10 and Hox11 genes are required to globally pattern the mammalian skeleton (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-07-19
    Beschreibung: Mice in which all members of the Hox10 or Hox11 paralogous group are disrupted provide evidence that these Hox genes are involved in global patterning of the axial and appendicular skeleton. In the absence of Hox10 function, no lumbar vertebrae are formed. Instead, ribs project from all posterior vertebrae, extending caudally from the last thoracic vertebrae to beyond the sacral region. In the absence of Hox11 function, sacral vertebrae are not formed and instead these vertebrae assume a lumbar identity. The redundancy among these paralogous family members is so great that this global aspect of Hox patterning is not apparent in mice that are mutant for five of the six paralogous alleles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wellik, Deneen M -- Capecchi, Mario R -- New York, N.Y. -- Science. 2003 Jul 18;301(5631):363-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and University of Utah, Salt Lake City, UT 84112, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12869760" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alleles ; Animals ; *Body Patterning ; Bone and Bones/*embryology ; Female ; Forelimb/embryology ; Gene Expression Regulation, Developmental ; *Genes, Homeobox ; Hindlimb/embryology ; Homeodomain Proteins/*genetics/physiology ; Male ; Mice ; Mice, Mutant Strains ; Mutation ; Oncogene Proteins/*genetics/physiology ; Phenotype ; Spine/*embryology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 27
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    Environmental health. Academy to mediate debate over rocket-fuel contaminants (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-03-22
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Renner, Rebecca -- New York, N.Y. -- Science. 2003 Mar 21;299(5614):1829.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12649455" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Brain/growth & development ; Female ; Humans ; Intelligence ; Maternal Exposure ; Maximum Allowable Concentration ; *Military Science ; *National Academy of Sciences (U.S.) ; *Perchlorates/adverse effects/toxicity ; Pregnancy ; *Sodium Compounds/adverse effects/toxicity ; Thyroid Gland/drug effects/metabolism ; Thyroid Hormones/metabolism ; United States ; United States Environmental Protection Agency ; United States Government Agencies ; *Water Pollutants, Chemical/adverse effects/toxicity ; *Water Supply
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 28
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    Requirement of Cks2 for the first metaphase/anaphase transition of mammalian meiosis (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-04-26
    Beschreibung: We generated mice lacking Cks2, one of two mammalian homologs of the yeast Cdk1-binding proteins, Suc1 and Cks1, and found them to be viable but sterile in both sexes. Sterility is due to failure of both male and female germ cells to progress past the first meiotic metaphase. The chromosomal events up through the end of prophase I are normal in both CKS2-/- males and females, suggesting that the phenotype is due directly to failure to enter anaphase and not a consequence of a checkpoint-mediated metaphase I arrest.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spruck, Charles H -- de Miguel, Maria P -- Smith, Adrian P L -- Ryan, Aimee -- Stein, Paula -- Schultz, Richard M -- Lincoln, A Jeannine -- Donovan, Peter J -- Reed, Steven I -- CA74224/CA/NCI NIH HHS/ -- HD22681/HD/NICHD NIH HHS/ -- HD38252/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2003 Apr 25;300(5619):647-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, MB-7, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12714746" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Anaphase ; Animals ; Apoptosis ; *CDC2-CDC28 Kinases ; CDC28 Protein Kinase, S cerevisiae/genetics/*physiology ; Chromosome Segregation ; Cyclin A/metabolism ; Cyclin B/metabolism ; Epididymis/cytology/physiology ; Female ; Gene Targeting ; In Situ Hybridization ; Infertility, Female/physiopathology ; Infertility, Male/physiopathology ; Male ; *Meiosis ; *Metaphase ; Mice ; Mutation ; Oocytes/*physiology ; Ovary/cytology/physiology ; RNA, Messenger/genetics/metabolism ; Recombination, Genetic ; Spermatocytes/*physiology ; Spermatogenesis ; Testis/cytology/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 29
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    Eating disorders and obesity (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-05-17
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reslewic, Susan -- New York, N.Y. -- Science. 2003 May 16;300(5622):1091.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12750498" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Female ; Humans ; Male ; Nutrition Policy ; Obesity/*psychology ; United States
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 30
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    Estrogen research. Brain researchers try to salvage estrogen treatments (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-11-15
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wickelgren, Ingrid -- New York, N.Y. -- Science. 2003 Nov 14;302(5648):1138-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14615509" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Age Factors ; Aged ; Animals ; Brain/*drug effects ; Cognition/drug effects ; Dementia/*etiology ; Drug Combinations ; *Estrogen Replacement Therapy/adverse effects ; Estrogens/*pharmacology ; Estrogens, Conjugated (USP)/administration & dosage/*adverse ; effects/*pharmacology ; Female ; Humans ; Medroxyprogesterone Acetate/administration & dosage/*adverse ; effects/*pharmacology ; Middle Aged ; Neurons/drug effects/metabolism ; Neuroprotective Agents/pharmacology ; Patient Selection ; Progesterone/pharmacology ; Randomized Controlled Trials as Topic ; Risk Factors ; Stroke/chemically induced/complications ; Time Factors
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 31
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    Inflammatory blockade restores adult hippocampal neurogenesis (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-11-15
    Beschreibung: Cranial radiation therapy causes a progressive decline in cognitive function that is linked to impaired neurogenesis. Chronic inflammation accompanies radiation injury, suggesting that inflammatory processes may contribute to neural stem cell dysfunction. Here, we show that neuroinflammation alone inhibits neurogenesis and that inflammatory blockade with indomethacin, a common nonsteroidal anti-inflammatory drug, restores neurogenesis after endotoxin-induced inflammation and augments neurogenesis after cranial irradiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Monje, Michelle L -- Toda, Hiroki -- Palmer, Theo D -- F30 NS04696701/NS/NINDS NIH HHS/ -- MH20016-05/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2003 Dec 5;302(5651):1760-5. Epub 2003 Nov 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stanford University, Department of Neurosurgery, MSLS P309, Mail Code 5487, 1201 Welch Road, Stanford, CA 94305-5487, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14615545" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Anti-Inflammatory Agents, Non-Steroidal/pharmacology ; Antigens, CD/metabolism ; Apoptosis ; Cell Differentiation ; Cells, Cultured ; Coculture Techniques ; Culture Media, Conditioned ; Cytokine Receptor gp130 ; Cytokines/physiology ; Dentate Gyrus/cytology/drug effects/physiology/radiation effects ; Female ; Gamma Rays ; Hippocampus/cytology/drug effects/*physiology/radiation effects ; In Situ Nick-End Labeling ; Indomethacin/*pharmacology ; Inflammation/drug therapy/*physiopathology ; Interleukin-6/pharmacology/physiology ; Lipopolysaccharides/pharmacology ; Membrane Glycoproteins/metabolism ; Mice ; Microglia/*physiology ; Mitotic Index ; Neurons/drug effects/*physiology/radiation effects ; Rats ; Rats, Inbred F344 ; Receptors, Interleukin-6/metabolism ; Recombinant Proteins/pharmacology ; Signal Transduction ; Stem Cells/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 32
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    Eukaryotic intron loss (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-05-31
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mourier, Tobias -- Jeffares, Daniel C -- New York, N.Y. -- Science. 2003 May 30;300(5624):1393.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Evolutionary Biology, Zoological Institute, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen O, Denmark. tmourier@zi.ku.dk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12775832" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Angiosperms/genetics ; Animals ; Caenorhabditis elegans/genetics ; DNA, Complementary/genetics ; Eukaryota/genetics ; *Eukaryotic Cells ; Fungi/genetics ; Humans ; Insects/genetics ; Interspersed Repetitive Sequences ; *Introns ; Mice ; Plasmodium/genetics ; RNA-Directed DNA Polymerase/metabolism ; Rats ; *Recombination, Genetic ; Takifugu/genetics ; Templates, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 33
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    TRB3: a tribbles homolog that inhibits Akt/PKB activation by insulin in liver (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-06-07
    Beschreibung: Insulin resistance is a major hallmark in the development of type II diabetes, which is characterized by the failure of insulin to promote glucose uptake in muscle and to suppress glucose production in liver. The serine-threonine kinase Akt (PKB) is a principal target of insulin signaling that inhibits hepatic glucose output when glucose is available from food. Here we show that TRB3, a mammalian homolog of Drosophila tribbles, functions as a negative modulator of Akt. TRB3 expression is induced in liver under fasting conditions, and TRB3 disrupts insulin signaling by binding directly to Akt and blocking activation of the kinase. Amounts of TRB3 RNA and protein were increased in livers of db/db diabetic mice compared with those in wild-type mice. Hepatic overexpression of TRB3 in amounts comparable to those in db/db mice promoted hyperglycemia and glucose intolerance. Our results suggest that, by interfering with Akt activation, TRB3 contributes to insulin resistance in individuals with susceptibility to type II diabetes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Du, Keyong -- Herzig, Stephan -- Kulkarni, Rohit N -- Montminy, Marc -- New York, N.Y. -- Science. 2003 Jun 6;300(5625):1574-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Peptide Biology Laboratories, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037-1002, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12791994" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenoviridae/genetics/physiology ; Amino Acid Substitution ; Animals ; Blood Glucose/metabolism ; Cell Cycle Proteins/genetics/*metabolism ; Cell Line ; Diabetes Mellitus/genetics/metabolism ; Enzyme Activation ; Fasting ; Genetic Vectors ; Glucose/metabolism ; Glucose Intolerance ; Glycogen Synthase Kinase 3/metabolism ; Humans ; Insulin/blood/*metabolism ; Insulin Resistance ; Insulin-Like Growth Factor I/pharmacology ; Liver/*metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Phosphorylation ; Polymerase Chain Reaction ; Protein-Serine-Threonine Kinases/metabolism ; Proto-Oncogene Proteins/*metabolism ; Proto-Oncogene Proteins c-akt ; RNA Interference ; Rats ; Repressor Proteins ; Signal Transduction ; Transfection ; Transgenes ; Tumor Cells, Cultured ; Two-Hybrid System Techniques
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 34
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    Society for Neuroscience meeting. Pills and games help conquer fear (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-11-25
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miller, Greg -- New York, N.Y. -- Science. 2003 Nov 21;302(5649):1321.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14631016" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Behavior Therapy ; Combined Modality Therapy ; Controlled Clinical Trials as Topic ; Cycloserine/*therapeutic use ; *Fear ; Humans ; Learning ; Phobic Disorders/*therapy ; Rats ; Receptors, N-Methyl-D-Aspartate/agonists/*metabolism ; *User-Computer Interface
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 35
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    Modification of ocular defects in mouse developmental glaucoma models by tyrosinase (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-03-08
    Beschreibung: Mutations in the cytochrome P450 family 1, subfamily B, polypeptide 1 (CYP1B1) gene are a common cause of human primary congenital glaucoma (PCG). Here we show that Cyp1b1-/- mice have ocular drainage structure abnormalities resembling those reported in human PCG patients. Using Cyp1b1-/- mice, we identified the tyrosinase gene (Tyr) as a modifier of the drainage structure phenotype, with Tyr deficiency increasing the magnitude of dysgenesis. The severe dysgenesis in eyes lacking both CYP1B1 and TYR was alleviated by administration of the tyrosinase product dihydroxyphenylalanine (l-dopa). Tyr also modified the drainage structure dysgenesis in mice with a mutant Foxc1 gene, which is also involved in PCG. These experiments raise the possibility that a tyrosinase/l-dopa pathway modifies human PCG, which could open new therapeutic avenues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Libby, Richard T -- Smith, Richard S -- Savinova, Olga V -- Zabaleta, Adriana -- Martin, Janice E -- Gonzalez, Frank J -- John, Simon W M -- CA34196/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2003 Mar 7;299(5612):1578-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Jackson Laboratory, Bar Harbor, ME 04609, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12624268" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Albinism, Ocular/genetics/pathology ; Animals ; Anterior Eye Segment/*abnormalities ; Aryl Hydrocarbon Hydroxylases/deficiency/genetics ; Cornea/abnormalities ; Cytochrome P-450 CYP1B1 ; *DNA-Binding Proteins ; Disease Models, Animal ; Female ; Forkhead Transcription Factors ; Glaucoma/*congenital/enzymology/*genetics/pathology ; Intraocular Pressure ; Iris/abnormalities ; Levodopa/administration & dosage/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Inbred Strains ; Monophenol Monooxygenase/deficiency/*genetics/metabolism ; Mutation ; Phenotype ; Pregnancy ; Trabecular Meshwork/abnormalities ; Transcription Factors/genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 36
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    Stability of retrieved memory: inverse correlation with trace dominance (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-08-23
    Beschreibung: In memory consolidation, the memory trace stabilizes and becomes resistant to certain amnesic agents. The textbook account is that for any memorized item, consolidation starts and ends just once. However, evidence has accumulated that upon activation in retrieval, the trace may reconsolidate. Whereas some authors reported transient renewed susceptibility of retrieved memories to consolidation blockers, others could not detect it. Here, we report that in both conditioned taste aversion in the rat and fear conditioning in the medaka fish, the stability of retrieved memory is inversely correlated with the control of behavior by that memory. This result may explain some conflicting findings on reconsolidation of activated memories.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eisenberg, Mark -- Kobilo, Tali -- Berman, Diego E -- Dudai, Yadin -- New York, N.Y. -- Science. 2003 Aug 22;301(5636):1102-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Weizmann Institute of Science, Rehovot 76100, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12934010" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aminobenzoates/pharmacology ; Analysis of Variance ; Animals ; Anisomycin/administration & dosage/pharmacology ; Avoidance Learning ; Cerebral Cortex/drug effects ; Conditioning (Psychology) ; Cues ; Electroshock ; *Extinction, Psychological/drug effects ; Fear ; Male ; *Memory ; *Mental Recall ; Oryzias ; Rats ; Rats, Wistar ; Taste ; meta-Aminobenzoates
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 37
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    Genomics. Defining genes in the genomics era (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-04-12
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Snyder, Michael -- Gerstein, Mark -- New York, N.Y. -- Science. 2003 Apr 11;300(5617):258-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12690176" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alternative Splicing ; Base Sequence ; Conserved Sequence ; Gene Silencing ; *Genes ; Genome, Fungal ; Genome, Human ; *Genomics ; Humans ; Open Reading Frames ; Pseudogenes ; Saccharomyces cerevisiae/genetics ; Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Does rejection hurt? An FMRI study of social exclusion (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-10-11
    Beschreibung: A neuroimaging study examined the neural correlates of social exclusion and tested the hypothesis that the brain bases of social pain are similar to those of physical pain. Participants were scanned while playing a virtual ball-tossing game in which they were ultimately excluded. Paralleling results from physical pain studies, the anterior cingulate cortex (ACC) was more active during exclusion than during inclusion and correlated positively with self-reported distress. Right ventral prefrontal cortex (RVPFC) was active during exclusion and correlated negatively with self-reported distress. ACC changes mediated the RVPFC-distress correlation, suggesting that RVPFC regulates the distress of social exclusion by disrupting ACC activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eisenberger, Naomi I -- Lieberman, Matthew D -- Williams, Kipling D -- R21MH66709-01/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2003 Oct 10;302(5643):290-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychology, Franz Hall, University of California, Los Angeles, Los Angeles, CA 90095-1563, USA. neisenbe@ucla.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14551436" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Brain Mapping ; *Emotions ; Female ; Gyrus Cinguli/*physiology ; Humans ; Magnetic Resonance Imaging ; Male ; Pain/*physiopathology ; Prefrontal Cortex/*physiology ; *Rejection (Psychology) ; *Social Isolation
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 39
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    Neuroscience. Snooty exchanges are key to mouse society (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-02-22
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miller, Greg -- New York, N.Y. -- Science. 2003 Feb 21;299(5610):1163.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12595661" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Behavior, Animal ; Cues ; Female ; Male ; Mice ; Mice, Inbred BALB C ; Mice, Inbred CBA ; Neurons/*physiology ; Neurons, Afferent/*physiology ; Olfactory Bulb/cytology/*physiology ; Olfactory Pathways ; Olfactory Receptor Neurons/physiology ; Pheromones/*physiology ; Receptors, Odorant/physiology ; Sex Characteristics ; Smell ; Species Specificity ; Vomeronasal Organ/cytology/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 40
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    LysM domain receptor kinases regulating rhizobial Nod factor-induced infection (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-08-30
    Beschreibung: The rhizobial infection of legumes has the most stringent demand toward Nod factor structure of all host responses, and therefore a specific Nod factor entry receptor has been proposed. The SYM2 gene identified in certain ecotypes of pea (Pisum sativum) is a good candidate for such an entry receptor. We exploited the close phylogenetic relationship of pea and the model legume Medicago truncatula to identify genes specifically involved in rhizobial infection. The SYM2 orthologous region of M. truncatula contains 15 putative receptor-like genes, of which 7 are LysM domain-containing receptor-like kinases (LYKs). Using reverse genetics in M. truncatula, we show that two LYK genes are specifically involved in infection thread formation. This, as well as the properties of the LysM domains, strongly suggests that they are Nod factor entry receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Limpens, Erik -- Franken, Carolien -- Smit, Patrick -- Willemse, Joost -- Bisseling, Ton -- Geurts, Rene -- New York, N.Y. -- Science. 2003 Oct 24;302(5645):630-3. Epub 2003 Aug 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Biology, Department of Plant Sciences, Wageningen University, Dreijenlaan 3, 6703HA, Wageningen, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12947035" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Base Sequence ; Gene Expression ; *Genes, Plant ; Ligands ; Lipopolysaccharides/*metabolism ; Medicago/genetics/microbiology/*physiology ; Models, Biological ; Molecular Sequence Data ; Mutation ; Nitrogen Fixation ; Peas ; Phenotype ; Plant Roots/*microbiology/physiology ; Protein Kinases/chemistry/*genetics/*metabolism ; Protein Structure, Tertiary ; RNA Interference ; Signal Transduction ; Sinorhizobium meliloti/chemistry/genetics/growth & development/*physiology ; *Symbiosis
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Cell therapy of alpha-sarcoglycan null dystrophic mice through intra-arterial delivery of mesoangioblasts (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-07-12
    Beschreibung: Preclinical or clinical trials for muscular dystrophies have met with modest success, mainly because of inefficient delivery of viral vectors or donor cells to dystrophic muscles. We report here that intra-arterial delivery of wild-type mesoangioblasts, a class of vessel-associated stem cells, corrects morphologically and functionally the dystrophic phenotype of virtually all downstream muscles in adult immunocompetent alpha-sarcoglycan (alpha-SG) null mice, a model organism for limb-girdle muscular dystrophy. When mesoangioblasts isolated from juvenile dystrophic mice and transduced with a lentiviral vector expressing alpha-SG were injected into the femoral artery of dystrophic mice, they reconstituted skeletal muscle in a manner similar to that seen in wild-type cells. The success of this protocol was mainly due to widespread distribution of donor stem cells through the capillary network, a distinct advantage of this strategy over previous approaches.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sampaolesi, Maurilio -- Torrente, Yvan -- Innocenzi, Anna -- Tonlorenzi, Rossana -- D'Antona, Giuseppe -- Pellegrino, M Antonietta -- Barresi, Rita -- Bresolin, Nereo -- De Angelis, M Gabriella Cusella -- Campbell, Kevin P -- Bottinelli, Roberto -- Cossu, Giulio -- 1322/Telethon/Italy -- 463/BI/Telethon/Italy -- New York, N.Y. -- Science. 2003 Jul 25;301(5632):487-92. Epub 2003 Jul 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stem Cell Research Institute, H. S. Raffaele, Via Olgettina 58, 20132 Milan, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12855815" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Blood Vessels/cytology/embryology ; Cell Differentiation ; Cell Line ; Cell Movement ; Cytoskeletal Proteins/*genetics/*metabolism ; Dystrophin/metabolism ; Endothelium, Vascular/physiology ; Female ; Femoral Artery ; Genetic Vectors ; Lentivirus/genetics ; Locomotion ; Male ; Membrane Glycoproteins/*genetics/*metabolism ; Mesoderm/cytology ; Mice ; Mice, Knockout ; Mice, Transgenic ; Muscle Contraction ; Muscle Fibers, Skeletal/cytology/physiology ; Muscle, Skeletal/cytology/metabolism/pathology/*physiology ; Muscular Dystrophy, Animal/metabolism/pathology/*therapy ; Regeneration ; Sarcoglycans ; *Stem Cell Transplantation ; Stem Cells/*physiology ; Transfection
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 42
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    Mothers' transitions from welfare to work and the well-being of preschoolers and adolescents (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-03-08
    Beschreibung: Results from a longitudinal study of 2402 low-income families during the recent unprecedented era of welfare reform suggest that mothers' transitions off welfare and into employment are not associated with negative outcomes for preschoolers (ages 2 to 4 years) or young adolescents (ages 10 to 14 years). Indeed, no significant associations with mothers' welfare and employment transitions were found for preschoolers, and the dominant pattern was also of few statistically significant associations for adolescents. The associations that did occur provided slight evidence that mothers' entry into the labor force was related to improvements in adolescents' mental health, whereas exits from employment were linked with teenagers' increased behavior problems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chase-Lansdale, P Lindsay -- Moffitt, Robert A -- Lohman, Brenda J -- Cherlin, Andrew J -- Coley, Rebekah Levine -- Pittman, Laura D -- Roff, Jennifer -- Votruba-Drzal, Elizabeth -- New York, N.Y. -- Science. 2003 Mar 7;299(5612):1548-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Northwestern University, Evanston, IL 60208, USA. lcl@northwestern.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12624259" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adolescent ; *Adolescent Behavior ; Child ; *Child Behavior ; Child Behavior Disorders/epidemiology ; Child, Preschool ; Cognition ; *Employment ; Female ; Humans ; Income ; Infant ; Interviews as Topic ; Least-Squares Analysis ; Longitudinal Studies ; *Mental Health ; Mother-Child Relations ; *Mothers ; Parenting ; *Public Assistance ; Social Welfare ; United States/epidemiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 43
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    Abnormal coronary function in mice deficient in alpha1H T-type Ca2+ channels (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-11-25
    Beschreibung: Calcium ion (Ca2+) influx through voltage-gated Ca2+ channels is important for the regulation of vascular tone. Activation of L-type Ca2+ channels initiates muscle contraction; however, the role of T-type Ca2+ channels (T-channels) is not clear. We show that mice deficient in the alpha1H T-type Ca2+ channel (alpha(1)3.2-null) have constitutively constricted coronary arterioles and focal myocardial fibrosis. Coronary arteries isolated from alpha(1)3.2-null arteries showed normal contractile responses, but reduced relaxation in response to acetylcholine and nitroprusside. Furthermore, acute blockade of T-channels with Ni2+ prevented relaxation of wild-type coronary arteries. Thus, Ca2+ influx through alpha1H T-type Ca2+ channels is essential for normal relaxation of coronary arteries.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Chien-Chang -- Lamping, Kathryn G -- Nuno, Daniel W -- Barresi, Rita -- Prouty, Sally J -- Lavoie, Julie L -- Cribbs, Leanne L -- England, Sarah K -- Sigmund, Curt D -- Weiss, Robert M -- Williamson, Roger A -- Hill, Joseph A -- Campbell, Kevin P -- New York, N.Y. -- Science. 2003 Nov 21;302(5649):1416-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of Iowa, Iowa City, IA 52242, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14631046" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetylcholine/pharmacology ; Animals ; Arteries/drug effects/*physiology ; Calcium/*metabolism ; Calcium Channels, T-Type/genetics/*physiology ; Coronary Vessels/drug effects/pathology/*physiology ; Echocardiography ; Electrocardiography ; Endothelium, Vascular/drug effects/physiology ; Female ; Fibrosis ; Ganglia, Spinal/cytology ; Gene Targeting ; Heart/physiology ; Heart Rate ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Muscle, Smooth, Vascular/physiology ; Myocardium/pathology ; Neurons/metabolism ; Nickel/pharmacology ; Nitric Oxide/physiology ; Nitric Oxide Donors/pharmacology ; Nitroprusside/pharmacology ; Patch-Clamp Techniques ; Vasoconstriction/drug effects ; *Vasodilation/drug effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 44
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    Micellar nanocontainers distribute to defined cytoplasmic organelles (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-04-26
    Beschreibung: Block copolymer micelles are water-soluble biocompatible nanocontainers with great potential for delivering hydrophobic drugs. An understanding of their cellular distribution is essential to achieving selective delivery of drugs at the subcellular level. Triple-labeling confocal microscopy in live cells revealed the localization of micelles in several cytoplasmic organelles, including mitochondria, but not in the nucleus. Moreover, micelles change the cellular distribution of and increase the amount of the agent delivered to the cells. These micelles may thus be worth exploring for their potential to selectively deliver drugs to specified subcellular targets.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Savic, Radoslav -- Luo, Laibin -- Eisenberg, Adi -- Maysinger, Dusica -- New York, N.Y. -- Science. 2003 Apr 25;300(5619):615-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology and Therapeutics, McGill University, Montreal, QC, H3G 1Y6, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12714738" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Azides/chemistry ; Biocompatible Materials ; Cell Nucleus/metabolism ; Cytoplasm/*metabolism ; Diffusion ; Drug Carriers/chemistry/*metabolism ; Endoplasmic Reticulum/metabolism ; Ethylene Oxide/chemistry/metabolism ; Fluoresceins ; Fluorescence ; Golgi Apparatus/metabolism ; Hydrophobic and Hydrophilic Interactions ; Lactones/chemistry/metabolism ; Lysosomes/metabolism ; *Micelles ; Microscopy, Confocal ; Microscopy, Fluorescence ; Mitochondria/metabolism ; *Nanotechnology ; Organelles/*metabolism ; PC12 Cells ; Polyethylene Glycols/chemistry ; Polymers/chemistry/metabolism ; Rats ; Rhodamines/chemistry ; Solubility ; Spectrometry, Fluorescence
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 45
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    Thalamic control of visceral nociception mediated by T-type Ca2+ channels (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-10-04
    Beschreibung: Sensations from viscera, like fullness, easily become painful if the stimulus persists. Mice lacking alpha1G T-type Ca2+ channels show hyperalgesia to visceral pain. Thalamic infusion of a T-type blocker induced similar hyperalgesia in wild-type mice. In response to visceral pain, the ventroposterolateral thalamic neurons evokeda surge of single spikes, which then slowly decayed as T type-dependent burst spikes gradually increased. In alpha1G-deficient neurons, the single-spike response persisted without burst spikes. These results indicate that T-type Ca2+ channels underlie an antinociceptive mechanism operating in the thalamus andsupport the idea that burst firing plays a critical role in sensory gating in the thalamus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Daesoo -- Park, Donghyun -- Choi, Soonwook -- Lee, Sukchan -- Sun, Minjeong -- Kim, Chanki -- Shin, Hee-Sup -- New York, N.Y. -- Science. 2003 Oct 3;302(5642):117-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Creative Research Initiative Center for Calcium and Learning, Korea Institutes of Science and Technology, Seoul 136-791, Korea.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14526084" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Abdominal Pain/physiopathology ; Acetic Acid/pharmacology ; Action Potentials ; Analysis of Variance ; Animals ; Calcium Channel Blockers/pharmacology ; Calcium Channels, T-Type/genetics/*physiology ; Female ; Magnesium Sulfate/pharmacology ; Male ; Mibefradil/pharmacology ; Mice ; Mice, Inbred C57BL ; Mutation ; Neurons/physiology ; Pain/*physiopathology ; Pain Measurement ; Ventral Thalamic Nuclei/*physiology ; Viscera
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 46
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    Virology. The SARS coronavirus: a postgenomic era (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-05-31
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holmes, Kathryn V -- Enjuanes, Luis -- New York, N.Y. -- Science. 2003 May 30;300(5624):1377-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, University of Colorado Health Sciences Center, Denver, CO 80262, USA. kathryn.holmes@UCHSC.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12775826" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Antigens, Viral/immunology ; Antiviral Agents ; Base Sequence ; Coronavirus/classification/genetics ; Drug Design ; Evolution, Molecular ; *Genome, Viral ; Humans ; Open Reading Frames ; Phylogeny ; RNA, Messenger/genetics ; RNA, Viral/*genetics ; Regulatory Sequences, Nucleic Acid ; SARS Virus/classification/*genetics/physiology ; Sequence Analysis, DNA ; Severe Acute Respiratory Syndrome/drug therapy/prevention & control/virology ; Transcription, Genetic ; Viral Proteins/chemistry/genetics/physiology ; Viral Vaccines
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 47
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    The chemistry of sexual deception in an orchid-wasp pollination system (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-10-18
    Beschreibung: The "sexually deceptive" orchid Chiloglottis trapeziformis attracts males of its pollinator species, the thynnine wasp Neozeleboria cryptoides, by emitting a unique volatile compound, 2-ethyl-5-propylcyclohexan-1,3-dione, which is also produced by female wasps as a male-attracting sex pheromone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schiestl, Florian P -- Peakall, Rod -- Mant, Jim G -- Ibarra, Fernando -- Schulz, Claudia -- Franke, Stephan -- Francke, Wittko -- New York, N.Y. -- Science. 2003 Oct 17;302(5644):437-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Botany and Zoology, The Australian National University, Canberra ACT 0200, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14564006" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cyclohexanones/chemistry/isolation & purification/*metabolism ; Female ; Flowers/metabolism ; Gas Chromatography-Mass Spectrometry ; Male ; Molecular Structure ; Odors ; Orchidaceae/*metabolism ; *Pollen ; Sex Attractants/chemistry/isolation & purification/*metabolism ; Sexual Behavior, Animal ; Spectroscopy, Fourier Transform Infrared ; Wasps/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Nervous system targets of RNA editing identified by comparative genomics (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-08-09
    Beschreibung: An unknown number of precursor messenger RNAs undergo genetic recoding by modification of adenosine to inosine, a reaction catalyzed by the adenosine deaminases acting on RNA (ADARs). Discovery of these edited transcripts has always been serendipitous. Using comparative genomics, we identified a phylogenetic signature of RNA editing. We report the identification and experimental verification of 16 previously unknown ADAR target genes in the fruit fly Drosophila and one in humans-more than the sum total previously reported. All of these genes are involved in rapid electrical and chemical neurotransmission, and many of the edited sites recode conserved and functionally important amino acids. These results point to a pivotal role for RNA editing in nervous system function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoopengardner, Barry -- Bhalla, Tarun -- Staber, Cynthia -- Reenan, Robert -- R01 GM062291/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2003 Aug 8;301(5634):832-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics and Developmental Biology, University of Connecticut Health Center, 263 Farmington Avenue, Farmington, CT 06030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12907802" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenosine/metabolism ; Adenosine Deaminase/*metabolism ; Animals ; Base Sequence ; Drosophila/*genetics ; Drosophila melanogaster/genetics ; *Genes, Insect ; Genomics ; Humans ; Inosine/metabolism ; Ion Channel Gating ; Ion Channels/*genetics/metabolism ; Molecular Sequence Data ; Nervous System/metabolism ; Phylogeny ; Potassium Channels/genetics/metabolism ; *RNA Editing ; RNA-Binding Proteins ; Reverse Transcriptase Polymerase Chain Reaction ; Synapses ; *Synaptic Transmission
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 49
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    Medicine. Consent from donors for embryo and stem cell research (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-08-16
    Beschreibung: As research with human embryos and embryonic stem cells proceeds, the authors of this Policy Forum argue that all donors of biological materials should give informed consent, including oocyte and sperm donors. Informed consent is particularly important because of the diverse opinions and strong emotions that surround such research. Some gamete donors who are willing to help women and couples bear children may object to the use of their genetic materials for certain types of research.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lo, Bernard -- Chou, Vicki -- Cedars, Marcelle I -- Gates, Elena -- Taylor, Robert N -- Wagner, Richard M -- Wolf, Leslie -- Yamamoto, Keith R -- New York, N.Y. -- Science. 2003 Aug 15;301(5635):921.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Medical Ethics, School of Medicine at the University of California, San Francisco, CA 94143, USA. bernie@medicine.ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12920284" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Embryo Research ; Embryo, Mammalian/*cytology ; Female ; Humans ; *Informed Consent ; Male ; Oocytes ; Reproductive Techniques, Assisted ; Spermatozoa ; *Stem Cells ; *Tissue Donors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 50
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    Diverse plant and animal genetic records from Holocene and Pleistocene sediments (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-04-19
    Beschreibung: Genetic analyses of permafrost and temperate sediments reveal that plant and animal DNA may be preserved for long periods, even in the absence of obvious macrofossils. In Siberia, five permafrost cores ranging from 400,000 to 10,000 years old contained at least 19 different plant taxa, including the oldest authenticated ancient DNA sequences known, and megafaunal sequences including mammoth, bison, and horse. The genetic data record a number of dramatic changes in the taxonomic diversity and composition of Beringian vegetation and fauna. Temperate cave sediments in New Zealand also yielded DNA sequences of extinct biota, including two species of ratite moa, and 29 plant taxa characteristic of the prehuman environment. Therefore, many sedimentary deposits may contain unique, and widespread, genetic records of paleoenvironments.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Willerslev, Eske -- Hansen, Anders J -- Binladen, Jonas -- Brand, Tina B -- Gilbert, M Thomas P -- Shapiro, Beth -- Bunce, Michael -- Wiuf, Carsten -- Gilichinsky, David A -- Cooper, Alan -- New York, N.Y. -- Science. 2003 May 2;300(5620):791-5. Epub 2003 Apr 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Evolutionary Biology, Zoological Institute, University of Copenhagen, Universitetsparken 15, Denmark DK-2100 O.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12702808" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Angiosperms/classification/genetics ; Animals ; Base Sequence ; Bryopsida/classification/genetics ; Cloning, Molecular ; DNA/*analysis/genetics ; DNA, Chloroplast/analysis ; DNA, Mitochondrial/analysis/genetics ; DNA, Plant/*analysis/genetics ; Ecosystem ; Fossils ; *Geologic Sediments ; Gymnosperms/classification/genetics ; History, Ancient ; Mammals/classification/genetics ; New Zealand ; Phylogeny ; *Plants/classification ; Polymerase Chain Reaction ; Siberia ; *Soil ; *Vertebrates/classification/genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Antiretroviral drugs for tuberculosis control in the era of HIV/AIDS (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-08-16
    Beschreibung: Human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS) has dramatically increased the incidence of tuberculosis (TB) in subSaharan Africa, where up to 60% of TB patients are coinfected with HIV and each year 200,000 TB deaths are attributable to HIV coinfection. Now HIV threatens control of TB in Asia, Eastern Europe, and Latin America. Antiretroviral (ARV) drugs can prevent TB by preserving immunity, but cohort analysis shows that early therapy, plus high levels of coverage and compliance, will be needed to avert a significant fraction of TB cases. However, ARV drugs could enhance the treatment of TB, and TB programs provide an important entry point for the treatment of HIV/AIDS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Williams, Brian G -- Dye, Christopher -- New York, N.Y. -- Science. 2003 Sep 12;301(5639):1535-7. Epub 2003 Aug 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Communicable Diseases, World Health Organization, 1211 Geneva 27, Switzerland. williamsbg@who.int〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12920302" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acquired Immunodeficiency Syndrome/*complications/drug ; therapy/immunology/mortality ; Africa South of the Sahara/epidemiology ; Anti-HIV Agents/*therapeutic use ; Antitubercular Agents/therapeutic use ; CD4 Lymphocyte Count ; Cohort Studies ; Developing Countries ; Drug Therapy, Combination ; Female ; HIV Infections/*complications/drug therapy/immunology/mortality ; Hiv-1 ; Hiv-2 ; Humans ; Incidence ; Male ; Survival Rate ; Tuberculosis/complications/drug therapy/epidemiology/*prevention & control
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 52
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    Nutrition. The vitamin D deficit (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-12-13
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stokstad, Erik -- New York, N.Y. -- Science. 2003 Dec 12;302(5652):1886-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14671267" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; African Americans ; Aged ; Aging ; Breast Feeding ; Calcium/blood ; Child ; Female ; Humans ; Infant ; Nutrition Policy ; Nutritional Requirements ; Rickets/*epidemiology/prevention & control ; Risk Factors ; Sunlight ; United States/epidemiology ; Vitamin D/*administration & dosage/biosynthesis/blood ; Vitamin D Deficiency/complications/*epidemiology/prevention & control
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Kin discrimination and the benefit of helping in cooperatively breeding vertebrates (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-10-25
    Beschreibung: In many cooperatively breeding vertebrates, a dominant breeding pair is assisted in offspring care by nonbreeding helpers. A leading explanation for this altruistic behavior is Hamilton's idea that helpers gain indirect fitness benefits by rearing relatives (kin selection). Many studies have shown that helpers typically provide care for relatives, but relatively few have shown that helpers provide closer kin with preferential care (kin discrimination), fueling the suggestion that kin selection only poorly accounts for the evolution of cooperative breeding in vertebrates. We used meta-analysis to show that (i) individuals consistently discriminate between kin, and (ii) stronger discrimination occurs in species where the benefits of helping are greater. These results suggest a general role for kin selection and that the relative importance of kin selection varies across species, as predicted by Hamilton's rule.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Griffin, Ashleigh S -- West, Stuart A -- New York, N.Y. -- Science. 2003 Oct 24;302(5645):634-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Cell, Animal and Population Biology, University of Edinburgh, King's Buildings, West Mains Road, Edinburgh EH9 3JT, UK. a.griffin@ed.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14576431" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Altruism ; Animals ; *Behavior, Animal ; Birds/*physiology ; Breeding ; *Cooperative Behavior ; Family ; Female ; *Helping Behavior ; Male ; Mammals/*physiology ; Probability ; Sexual Behavior, Animal ; Social Behavior ; Species Specificity
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Allosteric activators of glucokinase: potential role in diabetes therapy (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-07-19
    Beschreibung: Glucokinase (GK) plays a key role in whole-body glucose homeostasis by catalyzing the phosphorylation of glucose in cells that express this enzyme, such as pancreatic beta cells and hepatocytes. We describe a class of antidiabetic agents that act as nonessential, mixed-type GK activators (GKAs) that increase the glucose affinity and maximum velocity (Vmax) of GK. GKAs augment both hepatic glucose metabolism and glucose-induced insulin secretion from isolated rodent pancreatic islets, consistent with the expression and function of GK in both cell types. In several rodent models of type 2 diabetes mellitus, GKAs lowered blood glucose levels, improved the results of glucose tolerance tests, and increased hepatic glucose uptake. These findings may lead to the development of new drug therapies for diabetes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grimsby, Joseph -- Sarabu, Ramakanth -- Corbett, Wendy L -- Haynes, Nancy-Ellen -- Bizzarro, Fred T -- Coffey, John W -- Guertin, Kevin R -- Hilliard, Darryl W -- Kester, Robert F -- Mahaney, Paige E -- Marcus, Linda -- Qi, Lida -- Spence, Cheryl L -- Tengi, John -- Magnuson, Mark A -- Chu, Chang An -- Dvorozniak, Mark T -- Matschinsky, Franz M -- Grippo, Joseph F -- New York, N.Y. -- Science. 2003 Jul 18;301(5631):370-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Metabolic Diseases, Hoffmann-La Roche Inc., Nutley, NJ 07110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12869762" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adaptor Proteins, Signal Transducing ; Allosteric Regulation ; Animals ; Blood Glucose/metabolism ; *Carrier Proteins ; Diabetes Mellitus, Type 2/*drug therapy/metabolism ; Dose-Response Relationship, Drug ; Drug Evaluation, Preclinical ; Enzyme Activation ; Enzyme Activators/chemistry/pharmacology ; Glucokinase/*metabolism ; Glucose/*metabolism ; Glucose Tolerance Test ; Homeostasis ; Humans ; Hypoglycemic Agents/chemistry/pharmacology ; Insulin/blood/*secretion ; Islets of Langerhans/*drug effects/secretion ; Keto Acids/metabolism ; Liver/*drug effects/metabolism ; Liver Glycogen/biosynthesis ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Obese ; Proteins/metabolism/pharmacology ; Rats ; Rats, Wistar ; Recombinant Proteins/metabolism ; Stereoisomerism ; Thiazoles/chemistry/*pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 55
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    Spongiform degeneration in mahoganoid mutant mice (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-02-01
    Beschreibung: mahoganoid is a mouse coat-color mutation whose pigmentary phenotype and genetic interactions resemble those of Attractin (Atrn). Atrn mutations also cause spongiform neurodegeneration. Here, we show that a null mutation for mahoganoid causes a similar age-dependent neuropathology that includes many features of prion diseases but without accumulation of protease-resistant prion protein. The gene mutated in mahoganoid encodes a RING-containing protein with E3 ubiquitin ligase activity in vitro. Similarities in phenotype, expression, and genetic interactions suggest that mahoganoid and Atrn genes are part of a conserved pathway for regulated protein turnover whose function is essential for neuronal viability.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉He, Lin -- Lu, Xin-Yun -- Jolly, Aaron F -- Eldridge, Adam G -- Watson, Stanley J -- Jackson, Peter K -- Barsh, Gregory S -- Gunn, Teresa M -- New York, N.Y. -- Science. 2003 Jan 31;299(5607):710-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, Department of Genetics, Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12560552" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alleles ; Amino Acid Sequence ; Animals ; Blotting, Northern ; Brain/metabolism/*pathology ; Carrier Proteins/chemistry/*genetics/*metabolism ; Crosses, Genetic ; Female ; Gene Expression ; Ligases/metabolism ; Male ; Membrane Proteins/genetics ; Mice ; Mice, Inbred C3H ; Mice, Mutant Strains ; Mice, Transgenic ; Models, Biological ; Molecular Sequence Data ; *Mutation ; Neurodegenerative Diseases/*genetics/metabolism/*pathology ; Neurons/metabolism/pathology ; Pigmentation ; Prions/metabolism ; RNA, Messenger/genetics/metabolism ; Recombinant Fusion Proteins/metabolism ; Transgenes ; Ubiquitin/metabolism ; Ubiquitin-Protein Ligases ; Vacuoles/ultrastructure
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 56
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    Generation of viable cholesterol-free mice (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-12-20
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wechsler, A -- Brafman, A -- Shafir, M -- Heverin, M -- Gottlieb, H -- Damari, G -- Gozlan-Kelner, S -- Spivak, I -- Moshkin, O -- Fridman, E -- Becker, Y -- Skaliter, R -- Einat, P -- Faerman, A -- Bjorkhem, I -- Feinstein, E -- New York, N.Y. -- Science. 2003 Dec 19;302(5653):2087.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Quark Biotech, Inc., 10265 Carnegie Avenue, Cleveland, OH 44106, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14684813" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adipose Tissue ; Animals ; Bile Acids and Salts/biosynthesis ; Cholesterol/blood/*deficiency/metabolism/*physiology ; Desmosterol/*metabolism ; Female ; Gene Targeting ; Growth ; Humans ; Infertility ; Liver/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Models, Animal ; Nerve Tissue Proteins/*genetics/metabolism ; Oxidoreductases Acting on CH-CH Group Donors/*genetics/metabolism ; Phenotype ; Sex Characteristics ; Testis/pathology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 57
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    Anterior-posterior guidance of commissural axons by Wnt-frizzled signaling (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-12-13
    Beschreibung: Commissural neurons in the mammalian dorsal spinal cord send axons ventrally toward the floor plate, where they cross the midline and turn anteriorly toward the brain; a gradient of chemoattractant(s) inside the spinal cord controls this turning. In rodents, several Wnt proteins stimulate the extension of commissural axons after midline crossing (postcrossing). We found that Wnt4 messenger RNA is expressed in a decreasing anterior-to-posterior gradient in the floor plate, and that a directed source of Wnt4 protein attracted postcrossing commissural axons. Commissural axons in mice lacking the Wnt receptor Frizzled3 displayed anterior-posterior guidance defects after midline crossing. Thus, Wnt-Frizzled signaling guides commissural axons along the anterior-posterior axis of the spinal cord.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lyuksyutova, Anna I -- Lu, Chin-Chun -- Milanesio, Nancy -- King, Leslie A -- Guo, Nini -- Wang, Yanshu -- Nathans, Jeremy -- Tessier-Lavigne, Marc -- Zou, Yimin -- New York, N.Y. -- Science. 2003 Dec 12;302(5652):1984-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Pharmacology and Physiology, University of Chicago, Chicago, IL 60637, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14671310" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Axons/*physiology/ultrastructure ; Brain/embryology/metabolism ; COS Cells ; Central Nervous System/cytology/*embryology/metabolism ; Cues ; Culture Techniques ; Diffusion ; Frizzled Receptors ; Gene Expression Profiling ; Growth Cones/physiology/ultrastructure ; In Situ Hybridization ; *Membrane Proteins ; Mice ; Mice, Knockout ; Neurons/*physiology ; Proteins/pharmacology ; Proto-Oncogene Proteins/*metabolism ; Rats ; Rats, Sprague-Dawley ; Receptors, G-Protein-Coupled/genetics/*metabolism ; *Signal Transduction ; Spinal Cord/*cytology/embryology/metabolism ; Transfection ; Wnt Proteins ; Wnt4 Protein
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 58
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    Influence of life stress on depression: moderation by a polymorphism in the 5-HTT gene (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-07-19
    Beschreibung: In a prospective-longitudinal study of a representative birth cohort, we tested why stressful experiences lead to depression in some people but not in others. A functional polymorphism in the promoter region of the serotonin transporter (5-HT T) gene was found to moderate the influence of stressful life events on depression. Individuals with one or two copies of the short allele of the 5-HT T promoter polymorphism exhibited more depressive symptoms, diagnosable depression, and suicidality in relation to stressful life events than individuals homozygous for the long allele. This epidemiological study thus provides evidence of a gene-by-environment interaction, in which an individual's response to environmental insults is moderated by his or her genetic makeup.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Caspi, Avshalom -- Sugden, Karen -- Moffitt, Terrie E -- Taylor, Alan -- Craig, Ian W -- Harrington, HonaLee -- McClay, Joseph -- Mill, Jonathan -- Martin, Judy -- Braithwaite, Antony -- Poulton, Richie -- MH45070/MH/NIMH NIH HHS/ -- MH49414/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2003 Jul 18;301(5631):386-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Social, Genetic, and Developmental Psychiatry Research Centre, Institute of Psychiatry, King's College London, PO80 De Crespigny Park, London, SE5 8AF, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12869766" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; *Alleles ; Carrier Proteins/*genetics ; Child ; Child Abuse ; Depression/etiology/*genetics ; Depressive Disorder/etiology/*genetics ; Disease Susceptibility ; Female ; Genetic Predisposition to Disease ; Heterozygote ; Homozygote ; Humans ; Longitudinal Studies ; Male ; Membrane Glycoproteins/*genetics ; *Membrane Transport Proteins ; Monoamine Oxidase/genetics ; *Nerve Tissue Proteins ; *Polymorphism, Genetic ; Probability ; Promoter Regions, Genetic ; Serotonin Plasma Membrane Transport Proteins ; Stress, Psychological/*genetics ; Suicide, Attempted
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 59
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    Melanin, nutrition, and the lion's mane (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-02-04
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hill, Geoffrey E -- McGraw, Kevin J -- New York, N.Y. -- Science. 2003 Jan 31;299(5607):660; author reply 660.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12561820" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Animal Nutritional Physiological Phenomena ; Animals ; Diet ; Female ; *Hair Color ; Lions/*anatomy & histology/*physiology ; Male ; Melanins/analysis ; Testosterone/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 60
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    Comment on "Parasites as a viability cost of sexual selection in natural populations of mammals" (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-04-05
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brei, Brandon -- Fish, Durland -- New York, N.Y. -- Science. 2003 Apr 4;300(5616):55; author reply 55.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Epidemiology and Public Health, Yale University School of Medicine, 60 College Street, Post Office Box 208034, New Haven, CT 06520-8034, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12677043" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Wild ; Body Constitution ; Disease Susceptibility ; Female ; *Homing Behavior ; Humans ; Male ; *Mammals/parasitology/physiology ; Mortality ; Parasitic Diseases, Animal/*epidemiology/*etiology ; Selection, Genetic ; *Sex Characteristics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 61
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    Mitochondrial biogenesis in mammals: the role of endogenous nitric oxide (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-02-08
    Beschreibung: Nitric oxide was found to trigger mitochondrial biogenesis in cells as diverse as brown adipocytes and 3T3-L1, U937, and HeLa cells. This effect of nitric oxide was dependent on guanosine 3',5'-monophosphate (cGMP) and was mediated by the induction of peroxisome proliferator-activated receptor gamma coactivator 1alpha, a master regulator of mitochondrial biogenesis. Moreover, the mitochondrial biogenesis induced by exposure to cold was markedly reduced in brown adipose tissue of endothelial nitric oxide synthase null-mutant (eNOS-/-) mice, which had a reduced metabolic rate and accelerated weight gain as compared to wild-type mice. Thus, a nitric oxide-cGMP-dependent pathway controls mitochondrial biogenesis and body energy balance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nisoli, Enzo -- Clementi, Emilio -- Paolucci, Clara -- Cozzi, Valeria -- Tonello, Cristina -- Sciorati, Clara -- Bracale, Renata -- Valerio, Alessandra -- Francolini, Maura -- Moncada, Salvador -- Carruba, Michele O -- New York, N.Y. -- Science. 2003 Feb 7;299(5608):896-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Preclinical Sciences, Center for Study and Research on Obesity, Luigi Sacco Hospital, University of Milan, Milan 20157, Italy. enzo.nisoli@unimi.it〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12574632" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): 3T3 Cells ; 8-Bromo Cyclic Adenosine Monophosphate/pharmacology ; Adipocytes/*metabolism/ultrastructure ; Adipose Tissue, Brown/cytology/metabolism/ultrastructure ; Animals ; Cold Temperature ; Cyclic GMP/metabolism ; DNA, Mitochondrial/metabolism ; DNA-Binding Proteins/metabolism ; Eating ; Energy Metabolism ; Female ; HeLa Cells ; High Mobility Group Proteins ; Humans ; Male ; Mice ; Mice, Knockout ; Mitochondria/*metabolism/ultrastructure ; *Mitochondrial Proteins ; Motor Activity ; NF-E2-Related Factor 1 ; Nitric Oxide/*physiology ; Nitric Oxide Synthase/genetics/*metabolism ; Nitric Oxide Synthase Type II ; Nitric Oxide Synthase Type III ; Nuclear Proteins/metabolism ; Nuclear Respiratory Factors ; Oligonucleotides, Antisense/pharmacology ; Oxadiazoles/pharmacology ; Oxygen Consumption ; Penicillamine/*analogs & derivatives/pharmacology ; Quinoxalines/pharmacology ; RNA, Messenger/genetics/metabolism ; Rats ; Signal Transduction ; Trans-Activators/metabolism ; Transcription Factors/metabolism ; U937 Cells ; Weight Gain
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 62
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    Neuroscience. How to please a persnickety female (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-02-01
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miller, Greg -- New York, N.Y. -- Science. 2003 Jan 31;299(5607):648.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12560526" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Female ; Food ; Hydrocortisone/administration & dosage ; Learning/drug effects ; Male ; *Sexual Behavior, Animal ; Songbirds/*physiology ; *Vocalization, Animal
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 63
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    Environmental noise retards auditory cortical development (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-04-19
    Beschreibung: The mammalian auditory cortex normally undergoes rapid and progressive functional maturation. Here we show that rearing infant rat pups in continuous, moderate-level noise delayed the emergence of adultlike topographic representational order and the refinement of response selectivity in the primary auditory cortex (A1) long beyond normal developmental benchmarks. When those noise-reared adult rats were subsequently exposed to a pulsed pure-tone stimulus, A1 rapidly reorganized, demonstrating that exposure-driven plasticity characteristic of the critical period was still ongoing. These results demonstrate that A1 organization is shaped by a young animal's exposure to salient, structured acoustic inputs-and implicate noise as a risk factor for abnormal child development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chang, Edward F -- Merzenich, Michael M -- NS-10414/NS/NINDS NIH HHS/ -- NS-38416/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2003 Apr 18;300(5618):498-502.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉W. M. Keck Center for Integrative Neuroscience, University of California, San Francisco, CA, USA. echang@itsa.ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12702879" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acoustic Stimulation ; Animals ; Animals, Newborn ; Auditory Cortex/*growth & development/physiology ; Brain Mapping ; Electrophysiology ; Female ; Neuronal Plasticity ; Neurons/*physiology ; Noise/*adverse effects ; Rats ; Rats, Sprague-Dawley ; Time Factors
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 64
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    Effects of gaze on amygdala sensitivity to anger and fear faces (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-06-07
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adams, Reginald B Jr -- Gordon, Heather L -- Baird, Abigail A -- Ambady, Nalini -- Kleck, Robert E -- 1F32MH067294-01/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2003 Jun 6;300(5625):1536.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychological and Brain Sciences, Dartmouth College, 6207 Moore Hall, Hanover, NH 03755, USA. rba@alum.dartmouth.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12791983" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amygdala/*physiology ; Analysis of Variance ; *Anger ; Cues ; *Facial Expression ; *Fear ; Female ; *Fixation, Ocular ; Humans ; Male ; *Visual Perception
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Drosophila BLM in double-strand break repair by synthesis-dependent strand annealing (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-01-11
    Beschreibung: Bloom syndrome, characterized by a predisposition to cancer, is caused by mutation of the RecQ DNA helicase gene BLM. The precise function of BLM remains unclear. Previous research suggested that Drosophila BLM functions in the repair of DNA double-strand breaks. Most double-strand breaks in flies are repaired by homologous recombination through the synthesis-dependent strand-annealing pathway. Here, we demonstrate that Drosophila BLM mutants are severely impaired in their ability to carry out repair DNA synthesis during synthesis-dependent strand annealing. Consequently, repair in the mutants is completed by error-prone pathways that create large deletions. These results suggest a model in which BLM maintains genomic stability by promoting efficient repair DNA synthesis and thereby prevents double-strand break repair by less precise pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adams, Melissa D -- McVey, Mitch -- Sekelsky, Jeff J -- GM000678/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2003 Jan 10;299(5604):265-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12522255" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; DNA/*biosynthesis/metabolism ; *DNA Damage ; DNA Helicases/genetics/*physiology ; *DNA Repair ; Drosophila/genetics/*metabolism ; Drosophila Proteins/genetics/*physiology ; Eye Color ; Female ; Genes, Insect ; Male ; Mutation ; Terminal Repeat Sequences ; Transposases/metabolism
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    The neural basis of economic decision-making in the Ultimatum Game (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-06-14
    Beschreibung: The nascent field of neuroeconomics seeks to ground economic decision making in the biological substrate of the brain. We used functional magnetic resonance imaging of Ultimatum Game players to investigate neural substrates of cognitive and emotional processes involved in economic decision-making. In this game, two players split a sum of money;one player proposes a division and the other can accept or reject this. We scanned players as they responded to fair and unfair proposals. Unfair offers elicited activity in brain areas related to both emotion (anterior insula) and cognition (dorsolateral prefrontal cortex). Further, significantly heightened activity in anterior insula for rejected unfair offers suggests an important role for emotions in decision-making.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sanfey, Alan G -- Rilling, James K -- Aronson, Jessica A -- Nystrom, Leigh E -- Cohen, Jonathan D -- New York, N.Y. -- Science. 2003 Jun 13;300(5626):1755-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for the Study of Brain, Mind and Behavior, Princeton University, Princeton, NJ 08544, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12805551" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Behavior ; Brain/*physiology ; Cerebral Cortex/physiology ; Cognition ; *Decision Making ; *Economics ; *Emotions ; Female ; Game Theory ; *Games, Experimental ; Gyrus Cinguli/physiology ; Humans ; Interpersonal Relations ; Magnetic Resonance Imaging ; Male ; Prefrontal Cortex/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 67
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    Glycosylation restores survival of chilled blood platelets (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-09-13
    Beschreibung: Cooling of blood platelets clusters the von Willebrand factor receptor complex. Macrophage alphaMbeta2 integrins bind to the GPIbalpha subunit of the clustered complex, resulting in rapid clearance of transfused, cooled platelets. This precludes refrigeration of platelets for transfusion, but the current practice of room temperature storage has major drawbacks. We document that alphaMbeta2 is a lectin that recognizes exposed beta-N-acetylglucosamine residues of N-linked glycans on GPIbalpha. Enzymatic galactosylation of chilled platelets blocks alphaMbeta2 recognition, prolonging the circulation of functional cooled platelets. Platelet-associated galactosyltransferase produces efficient galactosylation when uridine diphosphate-galactose is added, affording a potentially simple method for storing platelets in the cold.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoffmeister, Karin M -- Josefsson, Emma C -- Isaac, Natasha A -- Clausen, Henrik -- Hartwig, John H -- Stossel, Thomas P -- HL19429/HL/NHLBI NIH HHS/ -- HL56949/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2003 Sep 12;301(5639):1531-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Hematology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA. khoffmeister@rics.bwh.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12970565" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetylglucosamine/metabolism/pharmacology ; Animals ; Blood Platelets/metabolism/*physiology ; Blood Preservation ; Carbohydrate Conformation ; Cell Line ; Cell Survival ; *Cold Temperature ; Female ; Galactose/*metabolism ; Galactosyltransferases/metabolism ; Glycosylation ; Humans ; Lectins/metabolism ; Ligands ; Macrophage-1 Antigen/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Monosaccharides/pharmacology ; Phagocytosis/drug effects ; Platelet Aggregation ; Platelet Glycoprotein GPIb-IX Complex/metabolism ; *Platelet Membrane Glycoproteins ; Platelet Transfusion ; Refrigeration ; Uridine Diphosphate Galactose/metabolism ; von Willebrand Factor/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 68
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    Stem cell research. Cells find destiny though merger (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-04-05
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holden, Constance -- New York, N.Y. -- Science. 2003 Apr 4;300(5616):35.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12677033" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Cell Differentiation ; *Cell Fusion ; Chromosome Aberrations ; Female ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/*physiology ; Hepatocytes/*physiology ; Humans ; Liver Regeneration ; Male ; Mice ; Neoplasms/etiology ; Stem Cells/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 69
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    Biotechnology. Hatching the golden egg: a new way to make drugs (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-05-06
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alper, Joe -- New York, N.Y. -- Science. 2003 May 2;300(5620):729-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12730574" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Animals, Genetically Modified ; Antibodies, Monoclonal ; *Biotechnology ; Chick Embryo/*metabolism ; Chickens/*genetics ; Female ; *Gene Transfer Techniques ; Green Fluorescent Proteins ; Humans ; Luminescent Proteins/genetics ; Male ; Recombinant Proteins/*biosynthesis ; Spermatozoa/immunology/metabolism ; beta-Galactosidase/genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 70
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    Positional cloning of the human quantitative trait locus underlying taste sensitivity to phenylthiocarbamide (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-02-22
    Beschreibung: The ability to taste the substance phenylthiocarbamide (PTC) has been widely used for genetic and anthropological studies, but genetic studies have produced conflicting results and demonstrated complex inheritance for this trait. We have identified a small region on chromosome 7q that shows strong linkage disequilibrium between single-nucleotide polymorphism (SNP) markers and PTC taste sensitivity in unrelated subjects. This region contains a single gene that encodes a member of the TAS2R bitter taste receptor family. We identified three coding SNPs giving rise to five haplotypes in this gene worldwide. These haplotypes completely explain the bimodal distribution of PTC taste sensitivity, thus accounting for the inheritance of the classically defined taste insensitivity and for 55 to 85% of the variance in PTC sensitivity. Distinct phenotypes were associated with specific haplotypes, which demonstrates that this gene has a direct influence on PTC taste sensitivity and that sequence variants at different sites interact with each other within the encoded gene product.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Un-kyung -- Jorgenson, Eric -- Coon, Hilary -- Leppert, Mark -- Risch, Neil -- Drayna, Dennis -- M01-RR00064/RR/NCRR NIH HHS/ -- T32 HG00044/HG/NHGRI NIH HHS/ -- Z01-000046-04/PHS HHS/ -- New York, N.Y. -- Science. 2003 Feb 21;299(5610):1221-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Institute on Deafness and Other Communication Disorders, National Institutes of Health, 5 Research Court, Rockville, MD 20850, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12595690" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alleles ; Amino Acid Substitution ; Animals ; Cebidae/genetics ; Chromosomes, Human, Pair 7/genetics ; Cloning, Molecular ; Computational Biology ; Continental Population Groups/genetics ; Evolution, Molecular ; Female ; Genetic Linkage ; Haplotypes ; Heterozygote ; Hominidae/genetics ; Homozygote ; Humans ; Linkage Disequilibrium ; Macaca fascicularis/genetics ; Male ; *Phenylthiourea ; *Polymorphism, Single Nucleotide ; *Quantitative Trait Loci ; Receptors, Cell Surface/chemistry/*genetics/physiology ; Receptors, G-Protein-Coupled ; Sequence Analysis, DNA ; Taste/*genetics ; Taste Threshold
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 71
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    Breast and ovarian cancer risks due to inherited mutations in BRCA1 and BRCA2 (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-10-25
    Beschreibung: Risks of breast and ovarian cancer were determined for Ashkenazi Jewish women with inherited mutations in the tumor suppressor genes BRCA1 and BRCA2. We selected 1008 index cases, regardless of family history of cancer, and carried out molecular analysis across entire families. The lifetime risk of breast cancer among female mutation carriers was 82%, similar to risks in families with many cases. Risks appear to be increasing with time: Breast cancer risk by age 50 among mutation carriers born before 1940 was 24%, but among those born after 1940 it was 67%. Lifetime risks of ovarian cancer were 54% for BRCA1 and 23% for BRCA2 mutation carriers. Physical exercise and lack of obesity in adolescence were associated with significantly delayed breast cancer onset.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉King, Mary-Claire -- Marks, Joan H -- Mandell, Jessica B -- New York Breast Cancer Study Group -- New York, N.Y. -- Science. 2003 Oct 24;302(5645):643-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Medicine and Genome Sciences, University of Washington, Seattle, WA 98195, USA. mcking@u.washington.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14576434" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Age of Onset ; Alleles ; Breast Neoplasms/epidemiology/*genetics ; Cohort Studies ; Exercise ; Family ; Fathers ; Female ; *Genes, BRCA1 ; *Genes, BRCA2 ; *Genetic Predisposition to Disease ; Genotype ; Heterozygote ; Humans ; Incidence ; Jews/genetics ; Life Style ; Male ; Mutation ; Obesity ; Ovarian Neoplasms/epidemiology/*genetics ; Penetrance ; Risk ; Risk Assessment ; Time Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 72
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    Intracellular bacterial biofilm-like pods in urinary tract infections (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-07-05
    Beschreibung: Escherichia coli entry into the bladder is met with potent innate defenses, including neutrophil influx and epithelial exfoliation. Bacterial subversion of innate responses involves invasion into bladder superficial cells. We discovered that the intracellular bacteria matured into biofilms, creating pod-like bulges on the bladder surface. Pods contained bacteria encased in a polysaccharide-rich matrix surrounded by a protective shell of uroplakin. Within the biofilm, bacterial structures interacted extensively with the surrounding matrix, and biofilm associated factors had regional variation in expression. The discovery of intracellular biofilm-like pods explains how bladder infections can persist in the face of robust host defenses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, Gregory G -- Palermo, Joseph J -- Schilling, Joel D -- Roth, Robyn -- Heuser, John -- Hultgren, Scott J -- AI29549/AI/NIAID NIH HHS/ -- AI48689/AI/NIAID NIH HHS/ -- DK51406/DK/NIDDK NIH HHS/ -- DK64540/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2003 Jul 4;301(5629):105-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Microbiology, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12843396" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Adhesins, Bacterial ; Adhesins, Escherichia coli ; Animals ; *Antigens, Bacterial ; Bacterial Outer Membrane Proteins/analysis ; *Biofilms ; Colony Count, Microbial ; Epithelial Cells/microbiology/ultrastructure ; Escherichia coli/growth & development/immunology/*pathogenicity/ultrastructure ; Escherichia coli Infections/immunology/*microbiology/pathology ; *Escherichia coli Proteins ; Female ; Fimbriae, Bacterial/physiology/ultrastructure ; Freeze Fracturing ; Immunity, Innate ; Membrane Glycoproteins/analysis ; Mice ; Mice, Inbred C3H ; Microscopy, Electron ; Microscopy, Electron, Scanning ; Polysaccharides, Bacterial/analysis ; Urinary Bladder/immunology/*microbiology/ultrastructure ; Urinary Bladder Diseases/immunology/*microbiology/pathology ; Urinary Tract Infections/immunology/*microbiology/pathology ; Urothelium/microbiology/ultrastructure
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 73
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    Infectious diseases. Hungry for details, scientists zoom in on SARS genomes (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-05-06
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Enserink, Martin -- Vogel, Gretchen -- New York, N.Y. -- Science. 2003 May 2;300(5620):715-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12730563" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; Coronavirus/classification/genetics ; Databases, Nucleic Acid ; *Genetic Variation ; *Genome, Viral ; Humans ; Internet ; Mutation ; Publishing ; SARS Virus/classification/*genetics/isolation & purification ; Severe Acute Respiratory Syndrome/*virology
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 74
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    Identified sources and targets of slow inhibition in the neocortex (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-03-22
    Beschreibung: There are two types of inhibitory postsynaptic potentials in the cerebral cortex. Fast inhibition is mediated by ionotropic gamma-aminobutyric acid type A (GABA(A)) receptors, and slow inhibition is due to metabotropic GABA(B) receptors. Several neuron classes elicit inhibitory postsynaptic potentials through GABA(A) receptors, but possible distinct sources of slow inhibition remain unknown. We identified a class of GABAergic interneurons, the neurogliaform cells, that, in contrast to other GABA-releasing cells, elicited combined GABA(A) and GABA(B) receptor-mediated responses with single action potentials and that predominantly targeted the dendritic spines of pyramidal neurons. Slow inhibition evoked by a distinct interneuron in spatially restricted postsynaptic compartments could locally and selectively modulate cortical excitability.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tamas, Gabor -- Lorincz, Andrea -- Simon, Andrea -- Szabadics, Janos -- New York, N.Y. -- Science. 2003 Mar 21;299(5614):1902-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Comparative Physiology, University of Szeged, Kozep fasor 52, Szeged H-6726, Hungary. gtamas@bio.u-szeged.hu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12649485" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Action Potentials ; Animals ; Bicuculline/pharmacology ; Dendrites/physiology ; Evoked Potentials ; GABA Antagonists/pharmacology ; GABA-A Receptor Antagonists ; GABA-B Receptor Antagonists ; Interneurons/*physiology/ultrastructure ; Neocortex/cytology/*physiology ; *Neural Inhibition ; Organophosphorus Compounds/pharmacology ; Patch-Clamp Techniques ; Pyramidal Cells/*physiology ; Pyridazines/pharmacology ; Rats ; Rats, Wistar ; Receptors, GABA-A/physiology ; Receptors, GABA-B/physiology ; Somatosensory Cortex/cytology/*physiology ; Synapses/physiology/ultrastructure ; *Synaptic Transmission
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Nuclear membrane proteins with potential disease links found by subtractive proteomics (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-09-06
    Beschreibung: To comprehensively identify integral membrane proteins of the nuclear envelope (NE), we prepared separately NEs and organelles known to cofractionate with them from liver. Proteins detected by multidimensional protein identification technology in the cofractionating organelles were subtracted from the NE data set. In addition to all 13 known NE integral proteins, 67 uncharacterized open reading frames with predicted membrane-spanning regions were identified. All of the eight proteins tested targeted to the NE, indicating that there are substantially more integral proteins of the NE than previously thought. Furthermore, 23 of these mapped within chromosome regions linked to a variety of dystrophies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schirmer, Eric C -- Florens, Laurence -- Guan, Tinglu -- Yates, John R 3rd -- Gerace, Larry -- F32 GM19085/GM/NIGMS NIH HHS/ -- GM28521/GM/NIGMS NIH HHS/ -- RR11823/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2003 Sep 5;301(5638):1380-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Scripps Research Institute, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12958361" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Algorithms ; Animals ; Cell Fractionation ; Chromosome Mapping ; DNA, Complementary ; Genetic Diseases, Inborn/*genetics ; Genetic Linkage ; Humans ; Liver/chemistry/ultrastructure ; Membrane Proteins/*analysis/genetics/isolation & purification ; Mice ; Mice, Inbred Strains ; Nuclear Envelope/*chemistry ; Nuclear Proteins/*analysis/genetics/isolation & purification ; Open Reading Frames ; Protein Structure, Tertiary ; *Proteomics ; Rats ; Rats, Sprague-Dawley
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Dilated cardiomyopathy and heart failure caused by a mutation in phospholamban (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-03-01
    Beschreibung: Molecular etiologies of heart failure, an emerging cardiovascular epidemic affecting 4.7 million Americans and costing 17.8 billion health-care dollars annually, remain poorly understood. Here we report that an inherited human dilated cardiomyopathy with refractory congestive heart failure is caused by a dominant Arg --〉 Cys missense mutation at residue 9 (R9C) in phospholamban (PLN), a transmembrane phosphoprotein that inhibits the cardiac sarcoplasmic reticular Ca2+-adenosine triphosphatase (SERCA2a) pump. Transgenic PLN(R9C) mice recapitulated human heart failure with premature death. Cellular and biochemical studies revealed that, unlike wild-type PLN, PLN(R9C) did not directly inhibit SERCA2a. Rather, PLN(R9C) trapped protein kinase A (PKA), which blocked PKA-mediated phosphorylation of wild-type PLN and in turn delayed decay of calcium transients in myocytes. These results indicate that myocellular calcium dysregulation can initiate human heart failure-a finding that may lead to therapeutic opportunities.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schmitt, Joachim P -- Kamisago, Mitsuhiro -- Asahi, Michio -- Li, Guo Hua -- Ahmad, Ferhaan -- Mende, Ulrike -- Kranias, Evangelia G -- MacLennan, David H -- Seidman, J G -- Seidman, Christine E -- New York, N.Y. -- Science. 2003 Feb 28;299(5611):1410-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School and Howard Hughes Medical Institute, 200 Longwood Avenue, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12610310" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Amino Acid Substitution ; Animals ; Calcium/metabolism ; Calcium Signaling ; Calcium-Binding Proteins/chemistry/*genetics/*physiology ; Calcium-Transporting ATPases/antagonists & inhibitors/metabolism ; Cardiomegaly ; Cardiomyopathy, Dilated/*genetics/pathology/physiopathology ; Cell Line ; Cyclic AMP-Dependent Protein Kinases/metabolism ; Female ; Heart Failure/*genetics/pathology/physiopathology ; Heart Ventricles/metabolism/pathology ; Humans ; Lod Score ; Male ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; Muscle Cells/metabolism/physiology ; *Mutation, Missense ; Myocardial Contraction ; Myocardium/pathology ; Pedigree ; Phosphorylation ; Sarcoplasmic Reticulum Calcium-Transporting ATPases
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    COMT val158met genotype affects mu-opioid neurotransmitter responses to a pain stressor (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-02-22
    Beschreibung: Responses to pain and other stressors are regulated by interactions between multiple brain areas and neurochemical systems. We examined the influence of a common functional genetic polymorphism affecting the metabolism of catecholamines on the modulation of responses to sustained pain in humans. Individuals homozygous for the met158 allele of the catechol-O-methyltransferase (COMT) polymorphism (val158met) showed diminished regional mu-opioid system responses to pain compared with heterozygotes. These effects were accompanied by higher sensory and affective ratings of pain and a more negative internal affective state. Opposite effects were observed in val158 homozygotes. The COMT val158met polymorphism thus influences the human experience of pain and may underlie interindividual differences in the adaptation and responses to pain and other stressful stimuli.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zubieta, Jon-Kar -- Heitzeg, Mary M -- Smith, Yolanda R -- Bueller, Joshua A -- Xu, Ke -- Xu, Yanjun -- Koeppe, Robert A -- Stohler, Christian S -- Goldman, David -- R01 DE 12059/DE/NIDCR NIH HHS/ -- R01 DE 12743/DE/NIDCR NIH HHS/ -- New York, N.Y. -- Science. 2003 Feb 21;299(5610):1240-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychiatry and Mental Health Research Institute, University of Michigan, Ann Arbor, MI 48109-0720, USA. zubieta@umich.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12595695" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Affect ; Amino Acid Substitution ; Analysis of Variance ; Brain/*metabolism/radionuclide imaging ; Brain Mapping ; Catechol O-Methyltransferase/chemistry/*genetics/metabolism ; Cerebellum/metabolism/radionuclide imaging ; Female ; Genotype ; Heterozygote ; Homozygote ; Humans ; Magnetic Resonance Imaging ; Male ; Neural Pathways ; *Pain ; Polymorphism, Genetic ; Receptors, Opioid, mu/*metabolism ; Synaptic Transmission ; Thalamus/metabolism
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 78
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    Derivation of oocytes from mouse embryonic stem cells (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-05-06
    Beschreibung: Continuation of mammalian species requires the formation and development of the sexually dimorphic germ cells. Cultured embryonic stem cells are generally considered pluripotent rather than totipotent because of the failure to detect germline cells under differentiating conditions. Here we show that mouse embryonic stem cells in culture can develop into oogonia that enter meiosis, recruit adjacent cells to form follicle-like structures, and later develop into blastocysts. Oogenesis in culture should contribute to various areas, including nuclear transfer and manipulation of the germ line, and advance studies on fertility treatment and germ and somatic cell interaction and differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hubner, Karin -- Fuhrmann, Guy -- Christenson, Lane K -- Kehler, James -- Reinbold, Rolland -- De La Fuente, Rabindranath -- Wood, Jennifer -- Strauss, Jerome F 3rd -- Boiani, Michele -- Scholer, Hans R -- 1RO1HD42011-01/HD/NICHD NIH HHS/ -- HD06274/HD/NICHD NIH HHS/ -- T32 HD07305/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2003 May 23;300(5623):1251-6. Epub 2003 May 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Germline Development Group, Center for Animal Transgenesis and Germ Cell Research, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center, 382 West Street Road, Kennett Square, PA 19348, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12730498" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Biomarkers/analysis ; Blastocyst/cytology/*physiology ; Cell Adhesion ; Cell Aggregation ; *Cell Differentiation ; Cell Lineage ; Cell Separation ; Cells, Cultured ; DNA-Binding Proteins/genetics ; Embryo, Mammalian/*cytology ; Estradiol/metabolism ; Female ; Gene Expression ; Genes, Reporter ; Meiosis ; Mice ; Mice, Transgenic ; Octamer Transcription Factor-3 ; Oocytes/cytology/*physiology ; *Oogenesis ; Ovarian Follicle/cytology/physiology ; Recombinant Fusion Proteins ; Totipotent Stem Cells/*physiology ; *Transcription Factors ; Transfection
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 79
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    Characterization of mammalian selenoproteomes (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-05-31
    Beschreibung: In the genetic code, UGA serves as a stop signal and a selenocysteine codon, but no computational methods for identifying its coding function are available. Consequently, most selenoprotein genes are misannotated. We identified selenoprotein genes in sequenced mammalian genomes by methods that rely on identification of selenocysteine insertion RNA structures, the coding potential of UGA codons, and the presence of cysteine-containing homologs. The human selenoproteome consists of 25 selenoproteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kryukov, Gregory V -- Castellano, Sergi -- Novoselov, Sergey V -- Lobanov, Alexey V -- Zehtab, Omid -- Guigo, Roderic -- Gladyshev, Vadim N -- GM61603/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2003 May 30;300(5624):1439-43.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Nebraska, Lincoln, NE 68588-0664, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12775843" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Base Sequence ; Codon ; Codon, Terminator ; Computational Biology ; DNA Transposable Elements ; Gene Expression Profiling ; Genome, Human ; Humans ; Mice ; Molecular Sequence Data ; Open Reading Frames ; Proteins/*chemistry/*genetics ; *Proteome ; Rats ; *Selenium ; Selenocysteine/chemistry/*genetics ; Selenoproteins ; Sequence Alignment ; Sequence Analysis, DNA ; Sequence Homology, Amino Acid ; Software
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 80
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    Microbiology. Pods invade infected bladders (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-07-05
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ferber, Dan -- New York, N.Y. -- Science. 2003 Jul 4;301(5629):31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12843366" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Adhesins, Bacterial ; Adhesins, Escherichia coli ; Animals ; *Antigens, Bacterial ; Bacterial Outer Membrane Proteins/biosynthesis ; *Biofilms ; Epithelial Cells/microbiology/ultrastructure ; Escherichia coli/growth & development/immunology/*pathogenicity/ultrastructure ; Escherichia coli Infections/immunology/*microbiology/pathology ; *Escherichia coli Proteins ; Female ; Fimbriae, Bacterial/ultrastructure ; Humans ; Mice ; Urinary Bladder/cytology/immunology/*microbiology/ultrastructure ; Urinary Bladder Diseases/immunology/*microbiology/pathology ; Urinary Tract Infections/immunology/*microbiology/pathology ; Urothelium/microbiology/ultrastructure
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 81
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    The Genome sequence of the SARS-associated coronavirus (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-05-06
    Beschreibung: We sequenced the 29,751-base genome of the severe acute respiratory syndrome (SARS)-associated coronavirus known as the Tor2 isolate. The genome sequence reveals that this coronavirus is only moderately related to other known coronaviruses, including two human coronaviruses, HCoV-OC43 and HCoV-229E. Phylogenetic analysis of the predicted viral proteins indicates that the virus does not closely resemble any of the three previously known groups of coronaviruses. The genome sequence will aid in the diagnosis of SARS virus infection in humans and potential animal hosts (using polymerase chain reaction and immunological tests), in the development of antivirals (including neutralizing antibodies), and in the identification of putative epitopes for vaccine development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marra, Marco A -- Jones, Steven J M -- Astell, Caroline R -- Holt, Robert A -- Brooks-Wilson, Angela -- Butterfield, Yaron S N -- Khattra, Jaswinder -- Asano, Jennifer K -- Barber, Sarah A -- Chan, Susanna Y -- Cloutier, Alison -- Coughlin, Shaun M -- Freeman, Doug -- Girn, Noreen -- Griffith, Obi L -- Leach, Stephen R -- Mayo, Michael -- McDonald, Helen -- Montgomery, Stephen B -- Pandoh, Pawan K -- Petrescu, Anca S -- Robertson, A Gordon -- Schein, Jacqueline E -- Siddiqui, Asim -- Smailus, Duane E -- Stott, Jeff M -- Yang, George S -- Plummer, Francis -- Andonov, Anton -- Artsob, Harvey -- Bastien, Nathalie -- Bernard, Kathy -- Booth, Timothy F -- Bowness, Donnie -- Czub, Martin -- Drebot, Michael -- Fernando, Lisa -- Flick, Ramon -- Garbutt, Michael -- Gray, Michael -- Grolla, Allen -- Jones, Steven -- Feldmann, Heinz -- Meyers, Adrienne -- Kabani, Amin -- Li, Yan -- Normand, Susan -- Stroher, Ute -- Tipples, Graham A -- Tyler, Shaun -- Vogrig, Robert -- Ward, Diane -- Watson, Brynn -- Brunham, Robert C -- Krajden, Mel -- Petric, Martin -- Skowronski, Danuta M -- Upton, Chris -- Roper, Rachel L -- New York, N.Y. -- Science. 2003 May 30;300(5624):1399-404. Epub 2003 May 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉British Columbia Cancer Agency (BCCA) Genome Sciences Centre, 600 West 10th Avenue, Vancouver, British Columbia V5Z 4E6, Canada. mmarra@bccgsc.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12730501" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): 3' Untranslated Regions ; 5' Untranslated Regions ; Animals ; Base Sequence ; Conserved Sequence ; Coronavirus/classification/genetics ; DNA, Complementary ; Frameshifting, Ribosomal ; *Genome, Viral ; Humans ; Membrane Glycoproteins/chemistry/genetics ; Nucleocapsid Proteins/chemistry/genetics ; Open Reading Frames ; Phylogeny ; RNA Replicase/chemistry/genetics ; RNA, Viral/*genetics/isolation & purification ; Regulatory Sequences, Nucleic Acid ; SARS Virus/classification/*genetics/isolation & purification ; Sequence Analysis, DNA ; Severe Acute Respiratory Syndrome/virology ; Spike Glycoprotein, Coronavirus ; Viral Envelope Proteins/chemistry/genetics ; Viral Matrix Proteins/chemistry/genetics ; Viral Proteins/chemistry/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 82
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    Kin selection in cooperative alliances of carrion crows (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-06-21
    Beschreibung: In most cooperative vertebrates, delayed natal dispersal is the mechanism that leads to the formation of kin societies. Under this condition, the possibility that kin-based cooperative breeding is an unselected consequence of dispersal patterns can never be ruled out because helpers can only help their relatives. Here we show that a population of carrion crows (Corvus corone corone) fully fits the central prediction of kin selection theory that cooperative breeding should arise among relatives. On their territory, resident breeders are aided not only by nonbreeding retained offspring but also by immigrants (mainly males), with whom they share matings. Philopatry cannot account, however, for the high degree of genetic relatedness found between breeders and immigrants of the same sex that cooperate at a nest, indicating that crows actively choose to breed cooperatively with their relatives.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baglione, Vittorio -- Canestrari, Daniela -- Marcos, Jose M -- Ekman, Jan -- New York, N.Y. -- Science. 2003 Jun 20;300(5627):1947-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Population Biology/Evolutionary Biology Centre, Uppsala University, Norbyvagen 18D, SE-752 36, Uppsala, Sweden. vittorio.baglione@ebc.uu.se〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12817149" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Behavior, Animal ; Biological Evolution ; *Breeding ; Cooperative Behavior ; Female ; Male ; Microsatellite Repeats ; Reproduction ; *Selection, Genetic ; Sexual Behavior, Animal ; Social Behavior ; Songbirds/genetics/*physiology ; Spain ; Territoriality
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 83
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    Discrete coding of reward probability and uncertainty by dopamine neurons (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-03-22
    Beschreibung: Uncertainty is critical in the measure of information and in assessing the accuracy of predictions. It is determined by probability P, being maximal at P = 0.5 and decreasing at higher and lower probabilities. Using distinct stimuli to indicate the probability of reward, we found that the phasic activation of dopamine neurons varied monotonically across the full range of probabilities, supporting past claims that this response codes the discrepancy between predicted and actual reward. In contrast, a previously unobserved response covaried with uncertainty and consisted of a gradual increase in activity until the potential time of reward. The coding of uncertainty suggests a possible role for dopamine signals in attention-based learning and risk-taking behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fiorillo, Christopher D -- Tobler, Philippe N -- Schultz, Wolfram -- 095495/Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2003 Mar 21;299(5614):1898-902.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Physiology, University of Fribourg, CH-1700 Fribourg, Switzerland. cdf28@cam.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12649484" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Attention ; Conditioning, Classical ; Discrimination (Psychology) ; Dopamine/*physiology ; Electrophysiology ; Female ; Learning ; Linear Models ; Macaca fascicularis ; Mesencephalon/cytology/*physiology ; Motivation ; Neurons/*physiology ; Photic Stimulation ; Probability ; Reinforcement (Psychology) ; *Reward ; Risk-Taking ; *Uncertainty
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 84
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    Epidemiology. Mothers' malaria appears to enhance spread of AIDS virus (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-11-25
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, Jon -- New York, N.Y. -- Science. 2003 Nov 21;302(5649):1311.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14631006" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antimalarials/therapeutic use ; Female ; HIV Infections/*complications/epidemiology/*transmission ; Humans ; Infant ; Infant, Newborn ; *Infectious Disease Transmission, Vertical/prevention & control ; Malaria/*complications/drug therapy/epidemiology ; Placenta Diseases/drug therapy/epidemiology/parasitology ; Plasmodium/physiology ; Pregnancy ; Pregnancy Complications, Infectious/*epidemiology ; Pregnancy Complications, Parasitic/drug therapy/*epidemiology ; Uganda/epidemiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 85
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    Conserved role of nanos proteins in germ cell development (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-08-30
    Beschreibung: In Drosophila, maternally supplied Nanos functions in the migration of primordial germ cells (PGCs) into the gonad; in mice, zygotic genes are involved instead. We report the cloning and the functional analyses of nanos2 and nanos3 in mice. These genes are differentially expressed in mouse PGCs. nanos2 is predominantly expressed in male germ cells, and the elimination of this gene results in a complete loss of spermatogonia. However, nanos3 is found in migrating PGCs, and the elimination of this factor results in the complete loss of germ cells in both sexes. Hence, although mice and flies differ in their mechanisms for germ cell specification, there seems to be conserved function for nanos proteins among invertebrates and vertebrates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tsuda, Masayuki -- Sasaoka, Yumiko -- Kiso, Makoto -- Abe, Kuniya -- Haraguchi, Seiki -- Kobayashi, Satoru -- Saga, Yumiko -- New York, N.Y. -- Science. 2003 Aug 29;301(5637):1239-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Mammalian Development, National Institute of Genetics, SOKENDAI, Yata 1111, Mishima, Shizuoka 411-8540, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12947200" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Apoptosis ; Carrier Proteins/chemistry/genetics/*physiology ; Cell Count ; Cell Division ; Cell Movement ; Cloning, Molecular ; Female ; Gene Expression Profiling ; Gene Targeting ; Germ Cells/*growth & development/*metabolism ; Gonads/embryology/growth & development/*metabolism ; In Situ Nick-End Labeling ; Male ; Mice ; Mice, Knockout ; Molecular Sequence Data ; Organ Size ; Ovary/anatomy & histology/metabolism ; Ovum/physiology ; Phenotype ; *RNA-Binding Proteins ; Spermatogenesis ; Spermatozoa/physiology ; Testis/anatomy & histology/embryology/growth & development/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 86
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    Control of effector CD8+ T cell function by the transcription factor Eomesodermin (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-11-08
    Beschreibung: Activated CD8+ T cells play a critical role in host defense against viruses, intracellular microbes, and tumors. It is not clear if a key regulatory transcription factor unites the effector functions of CD8+ T cells. We now show that Eomesodermin (Eomes), a paralogue of T-bet, is induced in effector CD8+ T cells in vitro and in vivo. Ectopic expression of Eomes was sufficient to invoke attributes of effector CD8+ T cells, including interferon-gamma (IFN-gamma), perforin, and granzyme B. Loss-of-function analysis suggests Eomes may also be necessary for full effector differentiation of CD8+ T cells. We suggest that Eomesodermin is likely to complement the actions of T-bet and act as a key regulatory gene in the development of cell-mediated immunity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pearce, Erika L -- Mullen, Alan C -- Martins, Gislaine A -- Krawczyk, Connie M -- Hutchins, Anne S -- Zediak, Valerie P -- Banica, Monica -- DiCioccio, Catherine B -- Gross, Darrick A -- Mao, Chai-An -- Shen, Hao -- Cereb, Nezih -- Yang, Soo Y -- Lindsten, Tullia -- Rossant, Janet -- Hunter, Christopher A -- Reiner, Steven L -- AI-042370/AI/NIAID NIH HHS/ -- GM-07229/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2003 Nov 7;302(5647):1041-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Abramson Family Cancer Research Institute, and Department of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14605368" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Arenaviridae Infections/immunology ; Base Sequence ; CD8-Positive T-Lymphocytes/*immunology/physiology ; Cell Differentiation ; Cytotoxicity, Immunologic ; Gene Expression Regulation ; Granzymes ; Interferon-gamma/biosynthesis ; Lymphocyte Activation ; Lymphocytic choriomeningitis virus/immunology ; Membrane Glycoproteins/biosynthesis/genetics ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Molecular Sequence Data ; Perforin ; Pore Forming Cytotoxic Proteins ; RNA, Messenger/genetics/metabolism ; Serine Endopeptidases/biosynthesis/genetics ; T-Box Domain Proteins/chemistry/genetics/*physiology ; Th2 Cells/immunology/physiology ; Transcription Factors/chemistry/genetics/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 87
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    Requirement of mammalian Timeless for circadian rhythmicity (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-10-18
    Beschreibung: Despite a central circadian role in Drosophila for the transcriptional regulator Timeless (dTim), the relevance of mammalian Timeless (mTim) remains equivocal. Conditional knockdown of mTim protein expression in the rat suprachiasmatic nucleus (SCN) disrupted SCN neuronal activity rhythms, and altered levels of known core clock elements. Full-length mTim protein (mTIM-fl) exhibited a 24-hour oscillation, where as a truncated isoform (mTIM-s) was constitutively expressed. mTIM-fl associated with the mammalian clock Period proteins (mPERs) in oscillating SCN cells. These data suggest that mTim is required for rhythmicity and is a functional homolog of dTim on the negative-feedback arm of the mammalian molecular clockwork.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barnes, Jessica W -- Tischkau, Shelley A -- Barnes, Jeffrey A -- Mitchell, Jennifer W -- Burgoon, Penny W -- Hickok, Jason R -- Gillette, Martha U -- GM07143/GM/NIGMS NIH HHS/ -- HL67007/HL/NHLBI NIH HHS/ -- NS10170/NS/NINDS NIH HHS/ -- NS11134/NS/NINDS NIH HHS/ -- NS11158/NS/NINDS NIH HHS/ -- NS22155/NS/NINDS NIH HHS/ -- NS35859/NS/NINDS NIH HHS/ -- R01 HL067007/HL/NHLBI NIH HHS/ -- R01 NS022155/NS/NINDS NIH HHS/ -- R01 NS035859/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2003 Oct 17;302(5644):439-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Structural Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14564007" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Biological Clocks ; Cell Cycle Proteins ; Cell Line ; *Circadian Rhythm ; Cryptochromes ; *Drosophila Proteins ; Electrophysiology ; *Eye Proteins ; Flavoproteins/metabolism ; Humans ; In Vitro Techniques ; Intracellular Signaling Peptides and Proteins ; Neurons/physiology ; Nuclear Proteins/metabolism ; Oligonucleotides, Antisense/pharmacology ; Period Circadian Proteins ; *Photoreceptor Cells, Invertebrate ; RNA Interference ; RNA, Messenger/genetics/metabolism ; Rats ; Rats, Inbred Strains ; Receptors, G-Protein-Coupled ; Reverse Transcriptase Polymerase Chain Reaction ; Suprachiasmatic Nucleus/*physiology ; Transcription Factors/chemistry/genetics/*metabolism ; Transfection
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 88
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    Developmental biology. Newborn neurons search for meaning (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-01-04
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, Marcia -- New York, N.Y. -- Science. 2003 Jan 3;299(5603):32-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12511626" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Brain/cytology/*physiology ; Cell Differentiation ; Cell Division ; Cell Survival ; Dentate Gyrus/cytology/*physiology ; Female ; Humans ; *Learning ; Male ; Memory ; Mice ; Neurons/*physiology ; Odors ; Olfactory Bulb/cytology/physiology ; Pregnancy ; Prolactin/*physiology ; Rats ; Receptors, Prolactin/genetics/physiology ; Seasons ; Smell ; Songbirds/physiology ; Stem Cells/physiology ; Vocalization, Animal
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 89
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    Epidemiology. The epidemiologist's dream: Denmark (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-07-12
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frank, Lone -- New York, N.Y. -- Science. 2003 Jul 11;301(5630):163.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12855788" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Child ; *Cohort Studies ; Costs and Cost Analysis ; Databases, Factual ; Denmark/epidemiology ; Epidemiologic Research Design ; Female ; Humans ; Medical Records Systems, Computerized ; *Mothers ; Patient Selection ; Pregnancy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 90
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    Hirschsprung disease is linked to defects in neural crest stem cell function (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-08-16
    Beschreibung: Genes associated with Hirschsprung disease, a failure to form enteric ganglia in the hindgut, were highly up-regulated in gut neural crest stem cells relative to whole-fetus RNA. One of these genes, the glial cell line-derived neurotrophic factor (GDNF) receptor Ret, was necessary for neural crest stem cell migration in the gut. GDNF promoted the migration of neural crest stem cells in culture but did not affect their survival or proliferation. Gene expression profiling, combined with reverse genetics and analyses of stem cell function, suggests that Hirschsprung disease is caused by defects in neural crest stem cell function.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2614078/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2614078/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iwashita, Toshihide -- Kruger, Genevieve M -- Pardal, Ricardo -- Kiel, Mark J -- Morrison, Sean J -- CA46592/CA/NCI NIH HHS/ -- DK58771/DK/NIDDK NIH HHS/ -- NIH5P60-DK20572/DK/NIDDK NIH HHS/ -- P30 AR48310/AR/NIAMS NIH HHS/ -- P60-AR20557/AR/NIAMS NIH HHS/ -- R01 NS040750/NS/NINDS NIH HHS/ -- R01 NS040750-01/NS/NINDS NIH HHS/ -- R01 NS40750-01/NS/NINDS NIH HHS/ -- R21 HD40760-02/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2003 Aug 15;301(5635):972-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109-0934, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12920301" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Differentiation ; Cell Division ; Cell Movement ; Cell Separation ; Cell Survival ; Cells, Cultured ; Digestive System/cytology/*embryology/innervation/metabolism ; Fetus/metabolism ; Gene Expression Profiling ; *Gene Expression Regulation, Developmental ; Glial Cell Line-Derived Neurotrophic Factor ; Glial Cell Line-Derived Neurotrophic Factor Receptors ; Hirschsprung Disease/*etiology/genetics ; Mice ; Multipotent Stem Cells/*physiology ; Nerve Growth Factors/genetics/metabolism/pharmacology ; Neural Crest/*cytology/physiology ; Oligonucleotide Array Sequence Analysis ; Proto-Oncogene Proteins/*genetics/metabolism ; Proto-Oncogene Proteins c-ret ; Rats ; Rats, Sprague-Dawley ; Receptor Protein-Tyrosine Kinases/*genetics/metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; Signal Transduction ; Up-Regulation
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Evolutionary biology. Outside agitators alter wasp behavior (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-10-18
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2003 Oct 17;302(5644):372.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14563978" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Behavior, Animal ; Biological Evolution ; Drosophila melanogaster/*parasitology ; Female ; Insect Viruses/*physiology ; Male ; Odors ; Orchidaceae/*metabolism ; Oviposition ; Pollen ; Selection, Genetic ; Sex Attractants/*metabolism ; Species Specificity ; Wasps/*physiology/*virology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Aging. It's never too late (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-09-23
    Beschreibung: When organisms as diverse as yeast and rodents are subjected to a restricted diet, they live longer. The good news is, according to Vaupel, Carey, and Christensen in their Perspective, that switching to a restricted diet at any age can yield the benefit of increased longevity--at least in flies (Mair et al.).〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2611955/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2611955/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vaupel, James W -- Carey, James R -- Christensen, Kaare -- AG-08761/AG/NIA NIH HHS/ -- P01 AG008761/AG/NIA NIH HHS/ -- P01 AG008761-130003/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2003 Sep 19;301(5640):1679-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Institute for Demographic Research, Konrad-Zuse-Strasse 1, D-18057 Rostock, Germany. jwv@demogr.mpg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14500969" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aged ; *Aging ; Animals ; *Caloric Restriction ; Demography ; *Diet ; Drosophila/*physiology ; Female ; Humans ; *Longevity ; Male ; Mortality ; Reproduction ; Risk ; Rodentia ; Sexual Behavior, Animal ; Time Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Evolution 2003 meeting. Genetic deficiency blamed on bacteria (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-07-26
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2003 Jul 25;301(5632):459.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12881548" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Bacterial Physiological Phenomena ; *Biological Evolution ; Digestion ; Diploidy ; Female ; Haploidy ; Insects/*genetics/*microbiology ; Male ; Ovum/microbiology ; *Ploidies ; Sex Characteristics ; *Symbiosis ; Wolbachia/physiology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    A war on obesity, not the obese (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-02-08
    Beschreibung: In their efforts to lose weight, obese individuals may be fighting a powerful set of evolutionary forces honed in an environment drastically different from that of today.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Friedman, Jeffrey M -- R01-DK41096/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2003 Feb 7;299(5608):856-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, The Rockefeller University, 1230 New York Avenue, New York, NY 10021. USA. friedj@mail.rockefeller.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12574619" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adipose Tissue/metabolism ; Body Mass Index ; Body Weight ; Diet ; Energy Intake ; Energy Metabolism ; Feeding Behavior ; Female ; Genes ; Homeostasis ; Humans ; Hunger ; Incidence ; Leptin/metabolism/therapeutic use ; Life Style ; Male ; *Obesity/epidemiology/genetics/physiopathology/prevention & control ; Public Health ; Selection, Genetic ; United States/epidemiology ; Weight Loss
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    American Chemical Society meeting. Molecular scaffolding helps raise a crop of neurons (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-10-04
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Service, Robert F -- New York, N.Y. -- Science. 2003 Oct 3;302(5642):46-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14526056" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Cell Differentiation ; Cells, Cultured ; Hydrocarbons ; Mice ; *Nanotechnology ; Neurons/*cytology ; *Peptides/chemistry ; Rats ; Spinal Cord Injuries/therapy ; Stem Cells/*cytology
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Evolution 2003 meeting. Male bugs sponge off of their mates (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-07-26
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2003 Jul 25;301(5632):458.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12881546" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Feeding Behavior ; Female ; Insects/*physiology ; Male ; Sex Characteristics ; *Sexual Behavior, Animal
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Welfare reform and child well-being (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-09-06
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaestner, Robert -- New York, N.Y. -- Science. 2003 Sep 5;301(5638):1325; author reply 1325.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12958344" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adolescent ; Child ; *Child Welfare ; Child, Preschool ; *Employment ; Female ; Humans ; *Mothers ; *Public Assistance ; *Public Policy ; Quality of Life ; Social Welfare
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Biomedical funding. In step with advocates, NIH backs targeted research centers (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-10-25
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, Jocelyn -- New York, N.Y. -- Science. 2003 Oct 24;302(5645):547.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14576389" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Breast Neoplasms/*etiology ; *Environment ; Female ; Financing, Government ; Humans ; Lobbying ; *Muscular Dystrophies ; National Institutes of Health (U.S.)/*economics ; Patient Advocacy ; *Research Support as Topic ; United States ; Universities
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Pyogenic bacterial infections in humans with IRAK-4 deficiency (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-03-15
    Beschreibung: Members of the Toll-like receptor (TLR) and interleukin-1 receptor (IL-1R) superfamily share an intracytoplasmic Toll-IL-1 receptor (TIR) domain, which mediates recruitment of the interleukin-1 receptor-associated kinase (IRAK) complex via TIR-containing adapter molecules. We describe three unrelated children with inherited IRAK-4 deficiency. Their blood and fibroblast cells did not activate nuclear factor kappaB and mitogen-activated protein kinase (MAPK) and failed to induce downstream cytokines in response to any of the known ligands of TIR-bearing receptors. The otherwise healthy children developed infections caused by pyogenic bacteria. These findings suggest that, in humans, the TIR-IRAK signaling pathway is crucial for protective immunity against specific bacteria but is redundant against most other microorganisms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Picard, Capucine -- Puel, Anne -- Bonnet, Marion -- Ku, Cheng-Lung -- Bustamante, Jacinta -- Yang, Kun -- Soudais, Claire -- Dupuis, Stephanie -- Feinberg, Jacqueline -- Fieschi, Claire -- Elbim, Carole -- Hitchcock, Remi -- Lammas, David -- Davies, Graham -- Al-Ghonaium, Abdulaziz -- Al-Rayes, Hassan -- Al-Jumaah, Sulaiman -- Al-Hajjar, Sami -- Al-Mohsen, Ibrahim Zaid -- Frayha, Husn H -- Rucker, Rajivi -- Hawn, Thomas R -- Aderem, Alan -- Tufenkeji, Haysam -- Haraguchi, Soichi -- Day, Noorbibi K -- Good, Robert A -- Gougerot-Pocidalo, Marie-Anne -- Ozinsky, Adrian -- Casanova, Jean-Laurent -- New York, N.Y. -- Science. 2003 Mar 28;299(5615):2076-9. Epub 2003 Mar 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire de Genetique Humaine des Maladies Infectieuses, Universite Rene Descartes-INSERM U550, Faculte Necker, 156 rue de Vaugirard, 75015 Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12637671" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alleles ; Child ; Codon, Terminator ; Cytokines/secretion ; *Drosophila Proteins ; Female ; Fibroblasts/immunology ; Humans ; Interleukin-1 Receptor-Associated Kinases ; Interleukins/immunology/secretion ; Lipopolysaccharides/immunology ; Male ; Membrane Glycoproteins/chemistry/immunology/metabolism ; Monocytes/immunology ; Mutation ; Neutrophils/immunology ; Pedigree ; Phosphotransferases (Alcohol Group Acceptor)/*deficiency/*genetics/metabolism ; Pneumococcal Infections/*immunology/metabolism ; Protein Structure, Tertiary ; Receptors, Cell Surface/chemistry/immunology/metabolism ; Receptors, Interleukin/immunology ; Receptors, Interleukin-1/chemistry ; Signal Transduction ; Staphylococcal Infections/*immunology/metabolism ; Toll-Like Receptors ; Tumor Necrosis Factor-alpha/immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Hypermutation of HIV-1 DNA in the absence of the Vif protein (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-05-17
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lecossier, Denise -- Bouchonnet, Francine -- Clavel, Francois -- Hance, Allan J -- New York, N.Y. -- Science. 2003 May 16;300(5622):1112.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉INSERM U552, Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12750511" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Base Sequence ; Cell Line ; Cytidine Deaminase ; DNA Mutational Analysis ; DNA, Viral/biosynthesis/*genetics ; Gene Products, vif/*physiology ; HIV-1/genetics/*physiology ; HeLa Cells ; Humans ; Molecular Sequence Data ; *Mutation ; Nucleoside Deaminases ; Proteins/physiology ; Repressor Proteins ; Virion/genetics/physiology ; Virus Replication ; vif Gene Products, Human Immunodeficiency Virus
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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