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  • Animals  (2,865)
  • Humans  (2,768)
  • Inorganic Chemistry
  • Organic Chemistry
  • American Association for the Advancement of Science (AAAS)  (4,367)
  • 1995-1999  (4,367)
  • 1970-1974
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  • 101
    Publication Date: 1998-11-13
    Description: Self tolerance is acquired by the developing immune system. As reported here, particular properties of the neonatal tissue contribute to this process. Neonatal skin, but not adult skin, was accessible for naive CD8 T cells. In mouse bone marrow chimeras generated at different ages, recent thymic emigrants were tolerized to a skin-expressed major histocompatibility complex class I antigen only during a neonatal period but not during adulthood. Blockade of T cell migration neonatally prevented tolerance induction. Thus, T cell trafficking through nonlymphoid tissues in the neonate is crucial for the establishment of self tolerance to sessile, skin-expressed antigens.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alferink, J -- Tafuri, A -- Vestweber, D -- Hallmann, R -- Hammerling, G J -- Arnold, B -- New York, N.Y. -- Science. 1998 Nov 13;282(5392):1338-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Tumor Immunology Program, German Cancer Research Center, 69120 Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9812902" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; Antigen Presentation ; Bone Marrow Transplantation ; CD8-Positive T-Lymphocytes/*immunology ; Cell Movement ; Graft Rejection ; H-2 Antigens/*immunology ; Keratinocytes/immunology ; Mice ; Mice, Transgenic ; Neoplasm Transplantation ; Neoplasms, Experimental/immunology ; Self Tolerance/*immunology ; Skin/*immunology ; Skin Transplantation ; T-Lymphocytes/*immunology ; Thymus Gland/immunology ; Transplantation Chimera
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 102
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-11-13
    Description: Human reovirus requires an activated Ras signaling pathway for infection of cultured cells. To investigate whether this property can be exploited for cancer therapy, severe combined immune deficient mice bearing tumors established from v-erbB-transformed murine NIH 3T3 cells or human U87 glioblastoma cells were treated with the virus. A single intratumoral injection of virus resulted in regression of tumors in 65 to 80 percent of the mice. Treatment of immune-competent C3H mice bearing tumors established from ras-transformed C3H-10T1/2 cells also resulted in tumor regression, although a series of injections were required. These results suggest that, with further work, reovirus may have applicability in the treatment of cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coffey, M C -- Strong, J E -- Forsyth, P A -- Lee, P W -- New York, N.Y. -- Science. 1998 Nov 13;282(5392):1332-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Biology Research Group and Department of Microbiology and Infectious Diseases, University of Calgary Health Science Centre, Calgary, Alberta, T2N 4N1, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9812900" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Antibodies, Viral/immunology ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; Cell Line, Transformed ; Genes, erbB ; *Genes, ras ; Humans ; Male ; Mammalian orthoreovirus 3/immunology/*physiology ; Mice ; Mice, Inbred C3H ; Mice, SCID ; Neoplasm Transplantation ; Neoplasms, Experimental/metabolism/pathology/*therapy/virology ; Signal Transduction ; Tumor Cells, Cultured ; Virus Replication ; ras Proteins/*metabolism
    Print ISSN: 0036-8075
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  • 103
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-07-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1998 Jul 3;281(5373):22-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9679011" target="_blank"〉PubMed〈/a〉
    Keywords: *AIDS Vaccines ; Acquired Immunodeficiency Syndrome/drug therapy/*prevention & control/therapy ; Advisory Committees ; Anti-HIV Agents/*therapeutic use ; *Bioethics ; Controlled Clinical Trials as Topic/*standards ; Developed Countries ; Developing Countries ; Ethical Review ; Ethics ; Ethics, Research ; HIV Infections/drug therapy/prevention & control/therapy ; Humans ; Informed Consent ; Internationality ; Placebos ; Research Subjects ; Withholding Treatment
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 104
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-07-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Strauss, E -- New York, N.Y. -- Science. 1998 Jun 26;280(5372):2050.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9669960" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Proteins/biosynthesis/genetics/*toxicity ; Endotoxins/biosynthesis/genetics/*toxicity ; *Enterobacteriaceae/genetics/metabolism ; *Insecticides ; Manduca ; Pest Control, Biological
    Print ISSN: 0036-8075
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  • 105
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-03-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 1998 Mar 6;279(5356):1456.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9508720" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Marrow Cells/cytology/*physiology ; Bone Marrow Transplantation ; Cell Differentiation ; Humans ; Mice ; Mice, Transgenic ; Muscle, Skeletal/cytology/pathology/*physiology ; Muscular Dystrophies/pathology/*therapy ; Muscular Dystrophy, Animal/pathology/therapy ; *Regeneration ; Stem Cells/*physiology ; Stromal Cells/physiology
    Print ISSN: 0036-8075
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  • 106
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-02-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 1998 Jan 23;279(5350):477-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9454345" target="_blank"〉PubMed〈/a〉
    Keywords: Anaphase/physiology ; Animals ; Calcium-Binding Proteins/metabolism ; *Carrier Proteins ; Cdc20 Proteins ; *Cell Cycle Proteins ; Chromosomal Proteins, Non-Histone/metabolism ; Chromosomes/*physiology ; Fungal Proteins/metabolism ; Humans ; Kinetochores/*physiology ; Microtubules/metabolism ; *Mitosis ; Nuclear Proteins ; Protein Kinases/metabolism ; Protein-Serine-Threonine Kinases ; Proteins/metabolism ; Signal Transduction ; Spindle Apparatus/metabolism
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 107
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-06-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hafen, E -- New York, N.Y. -- Science. 1998 May 22;280(5367):1212-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Zoologisches Institut der Universitat Zurich, Zurich, Switzerland. hafen@zool.unizh.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9634402" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/metabolism ; Calcium-Calmodulin-Dependent Protein Kinase Type 4 ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; Cyclic AMP Response Element-Binding Protein/metabolism ; Down-Regulation ; Dual Specificity Phosphatase 6 ; Enzyme Activation ; Mitogen-Activated Protein Kinase 1 ; Phosphoprotein Phosphatases/*metabolism ; Phosphorylation ; Protein Kinases/*metabolism ; Protein Tyrosine Phosphatases/metabolism ; *Signal Transduction
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  • 108
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-02-07
    Description: In vivo selection of phage display libraries was used to isolate peptides that home specifically to tumor blood vessels. When coupled to the anticancer drug doxorubicin, two of these peptides-one containing an alphav integrin-binding Arg-Gly-Asp motif and the other an Asn-Gly-Arg motif-enhanced the efficacy of the drug against human breast cancer xenografts in nude mice and also reduced its toxicity. These results indicate that it may be possible to develop targeted chemotherapy strategies that are based on selective expression of receptors in tumor vasculature.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arap, W -- Pasqualini, R -- Ruoslahti, E -- CA30199/CA/NCI NIH HHS/ -- CA62042/CA/NCI NIH HHS/ -- CA74238-01/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1998 Jan 16;279(5349):377-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Research Center, The Burnham Institute, 10901 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/9430587" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/metabolism ; Antineoplastic Agents/*administration & dosage/therapeutic use/toxicity ; Bacteriophages ; Coronary Vessels/drug effects ; Doxorubicin/*administration & dosage/*analogs & ; derivatives/metabolism/therapeutic use/toxicity ; *Drug Carriers ; Heart/drug effects ; Humans ; Integrin alphaV ; Integrins/metabolism ; Liver/blood supply/drug effects ; Mice ; Mice, Nude ; Neoplasm Transplantation ; Neoplasms, Experimental/*blood supply/*drug therapy/pathology ; Oligopeptides/*administration & dosage/metabolism/therapeutic use/toxicity ; Peptide Library ; Random Allocation ; Transplantation, Heterologous ; Tumor Cells, Cultured
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  • 109
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-03-21
    Description: Mossy fiber synaptic transmission at hippocampal CA3 pyramidal cells and interneurons was compared in rat brain slices to determine whether mossy terminals are functionally equivalent. Tetanic stimulation of mossy fibers induced long-term potentiation in pyramidal neurons but was either without effect or it induced depression at synapses onto interneurons. Unlike transmission onto pyramidal neurons, transmission onto interneurons was not potentiated after adenosine 3',5'-monophosphate (cAMP) activation. Furthermore, metabotropic glutamate receptor depression of transmission onto interneurons did not involve cAMP-dependent pathways. Thus, synaptic terminals arising from a common afferent pathway do not function as a single compartment but are specialized, depending on their postsynaptic target.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maccaferri, G -- Toth, K -- McBain, C J -- New York, N.Y. -- Science. 1998 Feb 27;279(5355):1368-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Cellular and Molecular Neurophysiology, Room 5A72, Building 49, National Institute of Child Health and Human Development, 9000 Rockville Pike, Bethesda MD 20892-4495, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9478900" target="_blank"〉PubMed〈/a〉
    Keywords: Afferent Pathways ; Animals ; Colforsin/pharmacology ; Cyclic AMP/metabolism ; Cycloleucine/analogs & derivatives/pharmacology ; Cyclopropanes/pharmacology ; Electric Stimulation ; Excitatory Postsynaptic Potentials/drug effects ; Glycine/analogs & derivatives/pharmacology ; Hippocampus/cytology/*physiology ; In Vitro Techniques ; Interneurons/drug effects/*physiology ; *Long-Term Potentiation ; Mossy Fibers, Hippocampal/*physiology ; Pyramidal Cells/drug effects/*physiology ; Rats ; Rats, Sprague-Dawley ; Receptors, Metabotropic Glutamate/agonists/physiology ; Synaptic Transmission/drug effects
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  • 110
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-09-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hagmann, M -- New York, N.Y. -- Science. 1999 Aug 20;285(5431):1200-1, 1203.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10484727" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Acetyltransferases/chemistry/metabolism ; Animals ; Cell Cycle Proteins/chemistry/metabolism ; Chromatin/chemistry/*metabolism/*ultrastructure ; *Gene Expression Regulation ; Histone Acetyltransferases ; Histones/*metabolism ; Methylation ; *Mitosis ; Phosphorylation ; Protein Structure, Secondary ; Protein-Arginine N-Methyltransferases/metabolism ; Transcription Factors ; p300-CBP Transcription Factors
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  • 111
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-09-08
    Description: Postdoctoral appointments can have different functions and meanings, depending on the field and whether the postdoc is a man or a woman. The Ph.D.'s-Ten Years Later study confirmed that in biochemistry, the postdoc, not the Ph.D., has become the general proving ground for excellence both in academia and industry. Because they spent a longer time in these "mandatory" postdocs, biochemists had the largest proportion of untenured faculty 10 to 13 years after the Ph. D. In mathematics, where substantially fewer postdoctoral positions are available, Ph.D.'s taking postdocs are more likely to obtain faculty positions, but this is true only for men. University administrators should be accountable for monitoring the total time spent in these positions and should provide administrative assistance for skills training, career growth, and the job search. In addition, creative solutions concerning the dual-career couple phenomenon are necessary.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nerad, M -- Cerny, J -- New York, N.Y. -- Science. 1999 Sep 3;285(5433):1533-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Graduate Division, University of California, Berkeley, 424 Sproul Hall, Berkeley, CA 94720-5900, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10477510" target="_blank"〉PubMed〈/a〉
    Keywords: *Biochemistry/education ; *Career Mobility ; *Education, Graduate ; Employment ; Faculty ; *Fellowships and Scholarships ; Female ; Humans ; Male ; *Mathematics ; Salaries and Fringe Benefits ; Societies, Scientific ; Time Factors ; United States ; Universities
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  • 112
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-02-07
    Description: The actin cytoskeleton mediates a variety of essential biological functions in all eukaryotic cells. In addition to providing a structural framework around which cell shape and polarity are defined, its dynamic properties provide the driving force for cells to move and to divide. Understanding the biochemical mechanisms that control the organization of actin is thus a major goal of contemporary cell biology, with implications for health and disease. Members of the Rho family of small guanosine triphosphatases have emerged as key regulators of the actin cytoskeleton, and furthermore, through their interaction with multiple target proteins, they ensure coordinated control of other cellular activities such as gene transcription and adhesion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hall, A -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1998 Jan 23;279(5350):509-14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Laboratory for Molecular Cell Biology, Cancer Research Campaign Oncogene and Signal Transduction Group, University College London, Gower Street, London WC1E 6BT, UK. alan.hall@ucl.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9438836" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/*metabolism ; Animals ; Cell Adhesion ; Cell Cycle ; Cell Movement ; Cytoskeleton/*metabolism/physiology/*ultrastructure ; Enzyme Activation ; GTP Phosphohydrolases/*metabolism ; GTP-Binding Proteins/*metabolism ; Gene Expression Regulation ; Humans ; Membrane Proteins/*metabolism ; Signal Transduction ; rhoB GTP-Binding Protein
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  • 113
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-01-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cotton, R G -- McKusick, V -- Scriver, C R -- New York, N.Y. -- Science. 1998 Jan 2;279(5347):10-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9441394" target="_blank"〉PubMed〈/a〉
    Keywords: Computer Communication Networks ; *Databases, Factual ; *Genetics, Medical ; *Human Genome Project ; Humans ; *Mutation ; Terminology as Topic
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  • 114
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-12-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tabara, H -- Grishok, A -- Mello, C C -- DK32520-15/DK/NIDDK NIH HHS/ -- R01 HD33769-01/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1998 Oct 16;282(5388):430-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9841401" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis elegans/*genetics ; *Gene Expression Regulation ; *Genes, Helminth ; Mutation ; Phenotype ; RNA, Antisense/*genetics ; RNA, Double-Stranded/genetics ; RNA, Helminth/*genetics ; RNA, Messenger/genetics ; Transcription, Genetic
    Print ISSN: 0036-8075
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  • 115
    Publication Date: 1998-03-21
    Description: Working memory is the process of maintaining an active representation of information so that it is available for use. In monkeys, a prefrontal cortical region important for spatial working memory lies in and around the principal sulcus, but in humans the location, and even the existence, of a region for spatial working memory is in dispute. By using functional magnetic resonance imaging in humans, an area in the superior frontal sulcus was identified that is specialized for spatial working memory. This area is located more superiorly and posteriorly in the human than in the monkey brain, which may explain why it was not recognized previously.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Courtney, S M -- Petit, L -- Maisog, J M -- Ungerleider, L G -- Haxby, J V -- New York, N.Y. -- Science. 1998 Feb 27;279(5355):1347-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Brain and Cognition, National Institute of Mental Health, Building 10, Room 4C104, 10 Center Drive, Bethesda, MD 20892-1366, USA. Susan_Courtney@nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9478894" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; *Brain Mapping ; Female ; Frontal Lobe/anatomy & histology/*physiology ; Haplorhini ; Humans ; Magnetic Resonance Imaging ; Male ; *Memory, Short-Term ; Prefrontal Cortex/anatomy & histology/physiology ; Psychomotor Performance ; Saccades ; *Space Perception
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  • 116
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-03-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hanken, J -- Richardson, M K -- New York, N.Y. -- Science. 1998 Feb 27;279(5355):1288.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9508699" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Embryo, Mammalian/*anatomy & histology ; Embryo, Nonmammalian/*anatomy & histology ; Vertebrates/anatomy & histology/*embryology
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  • 117
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-01-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Couzin, J -- New York, N.Y. -- Science. 1998 Dec 18;282(5397):2175-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9890822" target="_blank"〉PubMed〈/a〉
    Keywords: Budgets ; Cartilage ; *Complementary Therapies/economics/organization & administration ; Controlled Clinical Trials as Topic ; Humans ; Lung Neoplasms/therapy ; National Institutes of Health (U.S.)/economics/*organization & administration ; Research Support as Topic ; Tissue Extracts/therapeutic use ; United States
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  • 118
    Publication Date: 1998-11-13
    Description: The ectodomains of numerous proteins are released from cells by proteolysis to yield soluble intercellular regulators. The responsible protease, tumor necrosis factor-alpha converting enzyme (TACE), has been identified only in the case when tumor necrosis factor-alpha (TNFalpha) is released. Analyses of cells lacking this metalloproteinase-disintegrin revealed an expanded role for TACE in the processing of other cell surface proteins, including a TNF receptor, the L-selectin adhesion molecule, and transforming growth factor-alpha (TGFalpha). The phenotype of mice lacking TACE suggests an essential role for soluble TGFalpha in normal development and emphasizes the importance of protein ectodomain shedding in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peschon, J J -- Slack, J L -- Reddy, P -- Stocking, K L -- Sunnarborg, S W -- Lee, D C -- Russell, W E -- Castner, B J -- Johnson, R S -- Fitzner, J N -- Boyce, R W -- Nelson, N -- Kozlosky, C J -- Wolfson, M F -- Rauch, C T -- Cerretti, D P -- Paxton, R J -- March, C J -- Black, R A -- CA43793/CA/NCI NIH HHS/ -- DK53804/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1998 Nov 13;282(5392):1281-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immunex Corporation, Seattle, WA 98101, USA. peschon@immunex.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9812885" target="_blank"〉PubMed〈/a〉
    Keywords: ADAM Proteins ; Amino Acid Sequence ; Animals ; Catalytic Domain ; Cell Membrane/*metabolism ; Cells, Cultured ; Crosses, Genetic ; *Embryonic and Fetal Development ; L-Selectin/metabolism ; Ligands ; Membrane Proteins/*metabolism ; Metalloendopeptidases/chemistry/genetics/*metabolism ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Mutation ; Phenotype ; Protein Processing, Post-Translational ; Receptors, Tumor Necrosis Factor/metabolism ; Transforming Growth Factor alpha/metabolism ; Tumor Necrosis Factor-alpha/*metabolism
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-12-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ashcroft, F M -- New York, N.Y. -- Science. 1998 Nov 6;282(5391):1059-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University Laboratory of Physiology, Oxford OX1 3PT, UK. frances.ashcroft@physiol.ox.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9841452" target="_blank"〉PubMed〈/a〉
    Keywords: *ATP-Binding Cassette Transporters ; Adenosine Triphosphate/*metabolism/pharmacology ; Animals ; Binding Sites ; Cell Membrane/metabolism ; Islets of Langerhans/metabolism ; Models, Biological ; Myocardium/cytology/metabolism ; Phosphatidylinositol 4,5-Diphosphate/chemistry/*metabolism/pharmacology ; Potassium Channels/chemistry/genetics/*metabolism ; *Potassium Channels, Inwardly Rectifying ; Receptors, Drug/chemistry/metabolism ; Sulfonylurea Receptors ; Surface Properties
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  • 120
    Publication Date: 1998-03-21
    Description: Long-term potentiation (LTP) is an activity-dependent strengthening of synaptic efficacy that is considered to be a model of learning and memory. Protein tyrosine phosphorylation is necessary to induce LTP. Here, induction of LTP in CA1 pyramidal cells of rats was prevented by blocking the tyrosine kinase Src, and Src activity was increased by stimulation producing LTP. Directly activating Src in the postsynaptic neuron enhanced excitatory synaptic responses, occluding LTP. Src-induced enhancement of alpha-amino-3-hydroxy-5-methylisoxazolepropionic acid (AMPA) receptor-mediated synaptic responses required raised intracellular Ca2+ and N-methyl-D-aspartate (NMDA) receptors. Thus, Src activation is necessary and sufficient for inducing LTP and may function by up-regulating NMDA receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lu, Y M -- Roder, J C -- Davidow, J -- Salter, M W -- New York, N.Y. -- Science. 1998 Feb 27;279(5355):1363-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Samuel Lunenfeld Research Institute, Mount Sinai Hospital, and Department of Molecular and Medical Genetics, University of Toronto, M5S 1A8, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9478899" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcium/metabolism ; Electric Stimulation ; Enzyme Activation ; Excitatory Postsynaptic Potentials/drug effects ; Hippocampus/cytology/enzymology/*physiology ; In Vitro Techniques ; *Long-Term Potentiation ; Molecular Sequence Data ; Oligopeptides/pharmacology ; Patch-Clamp Techniques ; Peptide Fragments/pharmacology ; Proto-Oncogene Proteins pp60(c-src)/pharmacology ; Pyramidal Cells/enzymology/*physiology ; Rats ; Rats, Sprague-Dawley ; Receptors, AMPA/physiology ; Receptors, N-Methyl-D-Aspartate/physiology ; Recombinant Proteins/pharmacology ; Up-Regulation ; src-Family Kinases/*metabolism
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  • 121
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-09-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wickelgren, I -- New York, N.Y. -- Science. 1999 Aug 13;285(5430):999.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10475850" target="_blank"〉PubMed〈/a〉
    Keywords: Biotechnology/history ; Genetics, Medical/history ; Genome, Human ; History, 20th Century ; Humans ; United States
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  • 122
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-03-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 1998 Feb 20;279(5354):1129-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9508684" target="_blank"〉PubMed〈/a〉
    Keywords: Biological Transport ; Carrier Proteins/*metabolism ; Cell Nucleus/*metabolism ; Cytoplasm/metabolism ; GTP Phosphohydrolases/*metabolism ; Guanosine Diphosphate/metabolism ; Guanosine Triphosphate/metabolism ; Humans ; *Karyopherins ; Nuclear Envelope/*metabolism ; Nuclear Proteins/*metabolism ; Proteins/metabolism ; RNA/metabolism ; *Receptors, Cytoplasmic and Nuclear ; ran GTP-Binding Protein
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  • 123
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-06-25
    Description: When dissimilar images are presented to the two eyes, perception alternates spontaneously between each monocular view, a phenomenon called binocular rivalry. Functional brain imaging in humans was used to study the neural basis of these subjective perceptual changes. Cortical regions whose activity reflected perceptual transitions included extrastriate areas of the ventral visual pathway, and parietal and frontal regions that have been implicated in spatial attention; whereas the extrastriate areas were also engaged by nonrivalrous perceptual changes, activity in the frontoparietal cortex was specifically associated with perceptual alternation only during rivalry. These results suggest that frontoparietal areas play a central role in conscious perception, biasing the content of visual awareness toward abstract internal representations of visual scenes, rather than simply toward space.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lumer, E D -- Friston, K J -- Rees, G -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1998 Jun 19;280(5371):1930-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wellcome Department of Cognitive Neurology, Institute of Neurology, University College London, Queen Square, London WC1N 3BG, UK. elumer@fil.ion.ucl.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9632390" target="_blank"〉PubMed〈/a〉
    Keywords: Brain/physiology ; Brain Mapping ; Frontal Lobe/*physiology ; Humans ; Magnetic Resonance Imaging ; Neurons/physiology ; Parietal Lobe/*physiology ; Space Perception ; Vision, Binocular ; Visual Cortex/*physiology ; *Visual Perception
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  • 124
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-01-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 1998 Jan 2;279(5347):34.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9441407" target="_blank"〉PubMed〈/a〉
    Keywords: *Cell Aging ; Cell Nucleolus/metabolism/ultrastructure ; Cell Nucleus/metabolism ; DNA Helicases/genetics/*physiology ; *DNA Replication ; DNA, Circular/*biosynthesis ; DNA, Ribosomal/*biosynthesis ; Fungal Proteins/genetics/physiology ; Humans ; RecQ Helicases ; Repetitive Sequences, Nucleic Acid ; Saccharomyces cerevisiae/*cytology/genetics/metabolism ; Saccharomyces cerevisiae Proteins
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  • 125
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-12-16
    Description: After synthesis and processing in the nucleus, mature transfer RNAs (tRNAs) are exported to the cytoplasm in a Ran.guanosine triphosphate-dependent manner. Export of defective or immature tRNAs is avoided by monitoring both structure and function of tRNAs in the nucleus, and only tRNAs with mature 5' and 3' ends are exported. All tRNAs examined can be aminoacylated in nuclei of Xenopus oocytes, thereby providing a possible mechanism for functional proofreading of newly made tRNAs. Inhibition of aminoacylation of a specific tRNA retards its appearance in the cytoplasm, indicating that nuclear aminoacylation promotes efficient export.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lund, E -- Dahlberg, J E -- GM30220/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1998 Dec 11;282(5396):2082-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biomolecular Chemistry, University of Wisconsin-Madison, 1300 University Avenue, Madison, WI 53-706, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9851929" target="_blank"〉PubMed〈/a〉
    Keywords: Acylation ; Animals ; Biological Transport ; Cell Nucleus/*metabolism ; Cytoplasm/metabolism ; Introns ; Nucleic Acid Conformation ; Oocytes ; RNA Precursors/chemistry/*metabolism ; RNA Processing, Post-Transcriptional ; RNA Splicing ; RNA, Transfer/chemistry/*metabolism ; RNA, Transfer, Amino Acid-Specific ; RNA, Transfer, Amino Acyl/chemistry/*metabolism ; RNA, Transfer, Met/chemistry/metabolism ; RNA, Transfer, Tyr/chemistry/metabolism ; Templates, Genetic ; Xenopus laevis
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  • 126
    Publication Date: 1998-06-20
    Description: Two- and three-dimensional computer imaging shows that endocranial capacity in an approximately 2.8- to 2.6-million-year-old early hominid cranium (Stw 505) from Sterkfontein, South Africa, tentatively assigned to Australopithecus africanus, is approximately 515 cubic centimeters. Although this is the largest endocranial capacity recorded for this species, it is still markedly less than anecdotal reports of endocranial capacity exceeding 600 cubic centimeters. No australopithecine has an endocranial capacity approaching, let alone exceeding, 600 cubic centimeters. Some currently accepted estimates of early hominid endocranial capacity may be inflated, suggesting that the tempo and mode of early hominid brain evolution may need reevaluation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Conroy, G C -- Weber, G W -- Seidler, H -- Tobias, P V -- Kane, A -- Brunsden, B -- New York, N.Y. -- Science. 1998 Jun 12;280(5370):1730-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy and Neurobiology and Department of Anthropology, Washington University School of Medicine, St. Louis, MO 63110, USA. conroyg@thalamus.wustl.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9624045" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Brain/*anatomy & histology ; Computer Simulation ; *Fossils ; History, Ancient ; Hominidae/*anatomy & histology ; Humans ; Image Processing, Computer-Assisted ; *Models, Anatomic ; Skull/*anatomy & histology ; South Africa ; Tomography, X-Ray Computed
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  • 127
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-12-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Collignon, P -- New York, N.Y. -- Science. 1999 Dec 3;286(5446):1855-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10610574" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Viral/analysis ; *Gammaretrovirus/immunology ; Humans ; Retroviridae Infections/diagnosis/*transmission ; *Swine/virology ; *Transplantation, Heterologous/adverse effects
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  • 128
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-05-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Service, R F -- New York, N.Y. -- Science. 1999 Apr 23;284(5414):578-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10328734" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Electric Stimulation ; Electrodes ; Electrodes, Implanted ; *Electronics ; Electrophysiology ; Humans ; Nerve Net/*physiology ; Nervous System Diseases/*therapy ; Neurons/*physiology ; Rats ; Silicon ; *Transistors, Electronic
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-07-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hall, A -- New York, N.Y. -- Science. 1998 Jun 26;280(5372):2074-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK. Alan.Hall@ucl.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9669963" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; Animals ; Cytoskeleton/metabolism ; GTP Phosphohydrolases/*metabolism ; GTP-Binding Protein alpha Subunits, G12-G13 ; GTP-Binding Proteins/*metabolism ; Guanine Nucleotide Exchange Factors ; Guanosine Diphosphate/metabolism ; Guanosine Triphosphate/metabolism ; Morphogenesis ; Myosins/metabolism ; Proteins/chemistry/*metabolism ; Proto-Oncogene Proteins/chemistry/metabolism ; Rho Guanine Nucleotide Exchange Factors ; Signal Transduction
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  • 130
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-09-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cook, P -- New York, N.Y. -- Science. 1998 Sep 4;281(5382):1466-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Sir William Dunn School of Pathology, Oxford OX2 3RE, UK. peter.cook@path.ox.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9750117" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Nucleus/*metabolism ; *DNA Replication ; *Genome ; Genome, Human ; Humans ; Models, Biological ; *Transcription, Genetic
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  • 131
    Publication Date: 1998-10-17
    Description: The angiopoietins and members of the vascular endothelial growth factor (VEGF) family are the only growth factors thought to be largely specific for vascular endothelial cells. Targeted gene inactivation studies in mice have shown that VEGF is necessary for the early stages of vascular development and that angiopoietin-1 is required for the later stages of vascular remodeling. Here it is shown that transgenic overexpression of angiopoietin-1 in the skin of mice produces larger, more numerous, and more highly branched vessels. These results raise the possibility that angiopoietins can be used, alone or in combination with VEGF, to promote therapeutic angiogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Suri, C -- McClain, J -- Thurston, G -- McDonald, D M -- Zhou, H -- Oldmixon, E H -- Sato, T N -- Yancopoulos, G D -- HL-24136/HL/NHLBI NIH HHS/ -- HL-59157/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1998 Oct 16;282(5388):468-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9774272" target="_blank"〉PubMed〈/a〉
    Keywords: Angiopoietin-1 ; Animals ; Capillaries/anatomy & histology/ultrastructure ; Endothelial Growth Factors/genetics/physiology ; Endothelium, Vascular/ultrastructure ; Gene Expression ; Keratinocytes/metabolism ; Lymphokines/genetics/physiology ; Membrane Glycoproteins/genetics/*physiology ; Mice ; Mice, Transgenic ; *Neovascularization, Physiologic ; Skin/*blood supply/metabolism ; Transgenes ; Vascular Endothelial Growth Factor A ; Vascular Endothelial Growth Factors ; Venules/anatomy & histology/ultrastructure
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-07-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Perrin, L -- Telenti, A -- New York, N.Y. -- Science. 1998 Jun 19;280(5371):1871-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Virology, Division of Infectious Diseases, Geneva University Hospital, Geneva, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9669946" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-HIV Agents/*therapeutic use ; CD4 Lymphocyte Count ; Drug Resistance, Microbial ; Drug Resistance, Multiple ; Drug Therapy, Combination ; HIV Infections/*drug therapy/immunology/virology ; HIV-1/*drug effects/genetics/physiology ; Humans ; Treatment Failure
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  • 133
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-07-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arnsten, A F -- New York, N.Y. -- Science. 1998 Jun 12;280(5370):1711-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Neurobiology, Yale University School of Medicine, New Haven, CT 06520-8001, USA. amy_arnsten@qm.yale.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9660710" target="_blank"〉PubMed〈/a〉
    Keywords: Amygdala/*physiology ; Animals ; Attention/*physiology ; Catecholamines/*metabolism ; Dopamine/metabolism ; Humans ; Memory/*physiology ; Mental Disorders/physiopathology ; Norepinephrine/metabolism ; Prefrontal Cortex/*physiology ; Receptors, Adrenergic, beta/metabolism ; Receptors, Dopamine D1/metabolism ; Stress, Physiological/*physiopathology
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-07-31
    Description: Gamete interactions during fertilization exhibit species specificity. In abalone, the sperm protein lysin species-specifically creates a hole in the egg envelope. Lysin evolves rapidly by positive Darwinian selection. Evolution of the egg receptor for lysin provides the selective pressure for lysin's divergence. The egg receptor for lysin is a tandemly repeated sequence that evolves by concerted evolution. Concerted evolution in the egg receptor could explain the rapid, adaptive evolution in sperm lysin and may provide an underlying molecular mechanism that gives rise to species-specific fertilization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Swanson, W J -- Vacquier, V D -- HD12986/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1998 Jul 31;281(5377):710-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California at San Diego, La Jolla, CA 92093-0202, USA. jwswanson@ucsd.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9685267" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Egg Proteins/chemistry/*genetics/metabolism ; *Evolution, Molecular ; Female ; Introns ; Male ; Molecular Sequence Data ; Mollusca/chemistry/*genetics/physiology ; Mucoproteins/chemistry/genetics/*metabolism ; Ovum/chemistry/physiology ; Receptors, Cell Surface/chemistry/*genetics/metabolism ; Repetitive Sequences, Nucleic Acid ; Selection, Genetic ; Sequence Alignment ; Species Specificity ; Sperm-Ovum Interactions ; Spermatozoa/chemistry/physiology ; Vitelline Membrane/*chemistry/metabolism
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-11-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nilsson, A -- Rose, J -- New York, N.Y. -- Science. 1999 Oct 29;286(5441):894.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10577238" target="_blank"〉PubMed〈/a〉
    Keywords: *Biological Specimen Banks/legislation & jurisprudence ; Biotechnology ; Ethics Committees ; *Ethics, Research ; *Genetic Privacy ; *Genetic Research ; Government Regulation ; Humans ; *Privacy/legislation & jurisprudence ; Public Policy ; Sweden
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  • 136
    Publication Date: 1999-09-25
    Description: The flow of information from calcium-mobilizing receptors to nuclear factor of activated T cells (NFAT)-dependent genes is critically dependent on interaction between the phosphatase calcineurin and the transcription factor NFAT. A high-affinity calcineurin-binding peptide was selected from combinatorial peptide libraries based on the calcineurin docking motif of NFAT. This peptide potently inhibited NFAT activation and NFAT-dependent expression of endogenous cytokine genes in T cells, without affecting the expression of other cytokines that require calcineurin but not NFAT. Substitution of the optimized peptide sequence into the natural calcineurin docking site increased the calcineurin responsiveness of NFAT. Compounds that interfere selectively with the calcineurin-NFAT interaction without affecting calcineurin phosphatase activity may be useful as therapeutic agents that are less toxic than current drugs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aramburu, J -- Yaffe, M B -- Lopez-Rodriguez, C -- Cantley, L C -- Hogan, P G -- Rao, A -- R01 AI 40127/AI/NIAID NIH HHS/ -- R01 GM056203/GM/NIGMS NIH HHS/ -- R01 HL 03601/HL/NHLBI NIH HHS/ -- R43 AI 43726/AI/NIAID NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1999 Sep 24;285(5436):2129-33.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10497131" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Calcineurin/*metabolism ; Calcineurin Inhibitors ; Cell Nucleus/metabolism ; Cyclosporine/pharmacology ; Cytokines/biosynthesis/genetics ; DNA-Binding Proteins/*antagonists & inhibitors/chemistry/metabolism ; Gene Expression Regulation ; Genes, Reporter ; HeLa Cells ; Humans ; Immunosuppressive Agents/chemistry/metabolism/*pharmacology ; Jurkat Cells ; Molecular Sequence Data ; NFATC Transcription Factors ; *Nuclear Proteins ; Oligopeptides/chemistry/metabolism/*pharmacology ; Peptide Library ; Peptides/chemistry/metabolism/*pharmacology ; Phosphorylation ; Recombinant Fusion Proteins/metabolism ; T-Lymphocytes/*drug effects/immunology ; Transcription Factors/*antagonists & inhibitors/chemistry/metabolism ; Transfection
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  • 137
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-01-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lawler, C -- Erbisch, F -- New York, N.Y. -- Science. 1999 Jan 1;283(5398):33-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9917260" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biotechnology ; Mice ; Mice, Transgenic ; *Patents as Topic ; Plants, Genetically Modified/*genetics ; United States
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  • 138
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-10-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shapiro, H T -- New York, N.Y. -- Science. 1999 Sep 24;285(5436):2065.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10523197" target="_blank"〉PubMed〈/a〉
    Keywords: Advisory Committees ; *Bioethical Issues ; Embryo Research ; Embryo, Mammalian/*cytology ; Ethics Committees ; Financing, Government ; Government Regulation ; Humans ; Private Sector ; *Public Policy ; Research/*standards ; Research Support as Topic ; *Stem Cells ; United States
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  • 139
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-05-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Landick, R -- New York, N.Y. -- Science. 1999 Apr 23;284(5414):598-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Bacteriology, University of Wisconsin-Madison, Madison, WI 53706, USA. landick@macc.wisc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10328742" target="_blank"〉PubMed〈/a〉
    Keywords: Base Pairing ; Binding Sites ; DNA/chemistry/*metabolism ; DNA-Directed RNA Polymerases/genetics/*metabolism ; Escherichia coli/enzymology/genetics ; Gene Expression Regulation ; Humans ; Models, Genetic ; Mutation ; Nucleic Acid Conformation ; Oligodeoxyribonucleotides, Antisense/chemistry/metabolism ; RNA, Messenger/chemistry/*metabolism ; *Terminator Regions, Genetic ; *Transcription, Genetic ; Viral Proteins/metabolism
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  • 140
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-07-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hagmann, M -- New York, N.Y. -- Science. 1999 Jul 2;285(5424):21-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10428690" target="_blank"〉PubMed〈/a〉
    Keywords: *Genetic Techniques ; *Genome, Human ; Humans ; *Mutation ; *Polymorphism, Genetic
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  • 141
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-04-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Service, R F -- New York, N.Y. -- Science. 1999 Apr 2;284(5411):33-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10215526" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Arrhythmias, Cardiac/physiopathology ; Calcium/metabolism ; Calcium-Binding Proteins/metabolism ; Cardiac Output, Low/*physiopathology ; Chronic Disease ; *Computer Simulation ; Heart/*physiopathology ; Humans ; *Models, Cardiovascular ; *Myocardial Contraction ; Potassium/metabolism ; Potassium Channels/metabolism
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  • 142
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-05-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hagmann, M -- New York, N.Y. -- Science. 1999 Apr 30;284(5415):723, 725.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10336390" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Breast Neoplasms/*genetics/pathology ; *Disease Models, Animal ; Female ; *Genes, BRCA1 ; Genes, p53 ; Humans ; Mammary Glands, Animal/pathology ; Mammary Neoplasms, Animal/*genetics/pathology ; Mice ; Mice, Knockout ; Mice, Transgenic ; Mutation
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  • 143
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-04-30
    Description: Notch signaling defines an evolutionarily ancient cell interaction mechanism, which plays a fundamental role in metazoan development. Signals exchanged between neighboring cells through the Notch receptor can amplify and consolidate molecular differences, which eventually dictate cell fates. Thus, Notch signals control how cells respond to intrinsic or extrinsic developmental cues that are necessary to unfold specific developmental programs. Notch activity affects the implementation of differentiation, proliferation, and apoptotic programs, providing a general developmental tool to influence organ formation and morphogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Artavanis-Tsakonas, S -- Rand, M D -- Lake, R J -- NS26084/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1999 Apr 30;284(5415):770-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Massachusetts General Hospital Cancer Center, Department of Cell Biology, Harvard Medical School, Building 149, 13th Street, Charlestown, MA 02129, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10221902" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Cell Communication ; Cell Division ; Cell Nucleus/metabolism ; Humans ; Intracellular Signaling Peptides and Proteins ; Ligands ; Membrane Proteins/*physiology ; Receptors, Cell Surface/*physiology ; Receptors, Notch ; *Signal Transduction ; Transcription, Genetic
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  • 144
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-04-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crow, J F -- New York, N.Y. -- Science. 1999 Mar 12;283(5408):1651-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, University of Wisconsin, Madison, WI 53706, USA. jfcrow@facstaff.wisc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10189318" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carrier Proteins/*genetics/physiology ; Cell Nucleus/metabolism ; Cloning, Molecular ; Drosophila/*genetics/physiology ; *Drosophila Proteins ; *GTPase-Activating Proteins ; *Genes, Insect ; Male ; *Meiosis ; Nuclear Proteins/*genetics/physiology ; Sperm Maturation ; Spermatozoa/*physiology
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  • 145
    Publication Date: 1999-04-24
    Description: The lack of an adequate hominid fossil record in eastern Africa between 2 and 3 million years ago (Ma) has hampered investigations of early hominid phylogeny. Discovery of 2.5 Ma hominid cranial and dental remains from the Hata beds of Ethiopia's Middle Awash allows recognition of a new species of Australopithecus. This species is descended from Australopithecus afarensis and is a candidate ancestor for early Homo. Contemporary postcranial remains feature a derived humanlike humeral/femoral ratio and an apelike upper arm-to-lower arm ratio.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Asfaw, B -- White, T -- Lovejoy, O -- Latimer, B -- Simpson, S -- Suwa, G -- New York, N.Y. -- Science. 1999 Apr 23;284(5414):629-35.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Rift Valley Research Service, Post Office Box 5717, Addis Ababa, Ethiopia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10213683" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Bones of Upper Extremity/anatomy & histology ; Dentition ; Ethiopia ; *Fossils ; History, Ancient ; Hominidae/anatomy & histology/*classification ; Humans ; Leg Bones/anatomy & histology ; Paleodontology ; Phylogeny ; Skull/anatomy & histology ; Terminology as Topic ; Tooth/anatomy & histology
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  • 146
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-12-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wickelgren, I -- New York, N.Y. -- Science. 1999 Dec 3;286(5446):1826-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10610569" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Astrocytes/cytology ; Cell Differentiation ; Cell Survival ; Embryo, Mammalian ; Mice ; Neurons/cytology ; Oligodendroglia/cytology ; Rats ; Spinal Cord/cytology/*physiology ; Spinal Cord Injuries/*therapy ; *Stem Cell Transplantation ; Stem Cells/cytology
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  • 147
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-12-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wickelgren, I -- New York, N.Y. -- Science. 1999 Nov 12;286(5443):1265-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10610528" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Astrocytes/*enzymology ; Brain/*enzymology ; Cloning, Molecular ; Glutamic Acid/metabolism ; Neurons/metabolism ; Racemases and Epimerases/*genetics/metabolism ; Rats ; Receptors, N-Methyl-D-Aspartate/metabolism ; Serine/*biosynthesis/metabolism ; Stereoisomerism ; Synapses/metabolism
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  • 148
    Publication Date: 1999-11-05
    Description: The Brca1 (breast cancer gene 1) tumor suppressor protein is phosphorylated in response to DNA damage. Results from this study indicate that the checkpoint protein kinase ATM (mutated in ataxia telangiectasia) was required for phosphorylation of Brca1 in response to ionizing radiation. ATM resides in a complex with Brca1 and phosphorylated Brca1 in vivo and in vitro in a region that contains clusters of serine-glutamine residues. Phosphorylation of this domain appears to be functionally important because a mutated Brca1 protein lacking two phosphorylation sites failed to rescue the radiation hypersensitivity of a Brca1-deficient cell line. Thus, phosphorylation of Brca1 by the checkpoint kinase ATM may be critical for proper responses to DNA double-strand breaks and may provide a molecular explanation for the role of ATM in breast cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cortez, D -- Wang, Y -- Qin, J -- Elledge, S J -- GM44664/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Nov 5;286(5442):1162-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Verna and Mars McLean Department of Biochemistry and Molecular Biology, Howard Hughes Medical Institute, Department of Cell Biology, Baylor College of Medicine, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10550055" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Ataxia Telangiectasia/genetics ; Ataxia Telangiectasia Mutated Proteins ; BRCA1 Protein/*metabolism ; Breast Neoplasms/genetics ; Cell Cycle Proteins ; Cell Line ; *DNA Damage ; *DNA Repair ; DNA, Complementary ; DNA-Binding Proteins ; Female ; Gamma Rays ; Genes, BRCA1 ; Genetic Predisposition to Disease ; HeLa Cells ; Heterozygote ; Humans ; Molecular Sequence Data ; Mutation ; Phosphorylation ; Protein-Serine-Threonine Kinases/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Tumor Suppressor Proteins
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  • 149
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-02-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Haraldsdottir, R -- New York, N.Y. -- Science. 1999 Jan 22;283(5401):487.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9988648" target="_blank"〉PubMed〈/a〉
    Keywords: Bioethics ; Databases, Factual/*legislation & jurisprudence ; Genetic Privacy ; *Genetic Research ; Humans ; Iceland ; Medical Records Systems, Computerized/*legislation & jurisprudence ; Patient Advocacy
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  • 150
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-05-21
    Description: Ran, a small guanosine triphosphatase, is suggested to have additional functions beyond its well-characterized role in nuclear trafficking. Guanosine triphosphate-bound Ran, but not guanosine diphosphate-bound Ran, stimulated polymerization of astral microtubules from centrosomes assembled on Xenopus sperm. Moreover, a Ran allele with a mutation in the effector domain (RanL43E) induced the formation of microtubule asters and spindle assembly, in the absence of sperm nuclei, in a gammaTuRC (gamma-tubulin ring complex)- and XMAP215 (Xenopus microtubule associated protein)-dependent manner. Therefore, Ran could be a key signaling molecule regulating microtubule polymerization during mitosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilde, A -- Zheng, Y -- GM56312-01/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 May 21;284(5418):1359-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Carnegie Institution of Washington, Department of Embryology, Baltimore, MD 21210, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10334991" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Extracts ; Cell Nucleus/metabolism ; Centrosome/physiology ; Dimethyl Sulfoxide/pharmacology ; Dyneins/physiology ; GTP Phosphohydrolases/genetics/*metabolism ; Guanosine Diphosphate/metabolism ; Guanosine Triphosphate/*metabolism ; Male ; Microtubule-Associated Proteins/metabolism ; Microtubules/*metabolism/ultrastructure ; Mutation ; Nuclear Proteins/analysis/genetics/*metabolism/pharmacology ; Ovum ; Recombinant Fusion Proteins/metabolism/pharmacology ; Sperm Head/physiology ; Spindle Apparatus/chemistry/*metabolism/ultrastructure ; Tubulin/analysis/metabolism ; Xenopus ; *Xenopus Proteins ; ran GTP-Binding Protein
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  • 151
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-12-03
    Description: Polypeptides emerging from the ribosome must fold into stable three-dimensional structures and maintain that structure throughout their functional lifetimes. Maintaining quality control over protein structure and function depends on molecular chaperones and proteases, both of which can recognize hydrophobic regions exposed on unfolded polypeptides. Molecular chaperones promote proper protein folding and prevent aggregation, and energy-dependent proteases eliminate irreversibly damaged proteins. The kinetics of partitioning between chaperones and proteases determines whether a protein will be destroyed before it folds properly. When both quality control options fail, damaged proteins accumulate as aggregates, a process associated with amyloid diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wickner, S -- Maurizi, M R -- Gottesman, S -- New York, N.Y. -- Science. 1999 Dec 3;286(5446):1888-93.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Biology, National Cancer Institute, Bethesda, MD 20892-4255, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10583944" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphatases/metabolism ; Amyloid/metabolism ; Animals ; Endopeptidases/*metabolism ; Eukaryotic Cells/metabolism ; Humans ; Models, Biological ; Molecular Chaperones/*metabolism ; Prions/metabolism ; Prokaryotic Cells/metabolism ; Protein Biosynthesis ; *Protein Folding ; Proteins/*chemistry/*metabolism ; Ubiquitins/metabolism
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  • 152
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-01-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wickelgren, I -- New York, N.Y. -- Science. 1999 Jan 1;283(5398):14-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9917254" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/metabolism ; Cells, Cultured ; Dimerization ; Drug Design ; Humans ; Neurons/*metabolism ; Potassium Channels/metabolism ; Rats ; Receptors, GABA-B/*chemistry/*metabolism ; Signal Transduction ; gamma-Aminobutyric Acid/metabolism
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  • 153
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-10-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shastri, L -- New York, N.Y. -- Science. 1999 Sep 10;285(5434):1673-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10523181" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; Infant ; *Learning ; *Mathematics ; *Neural Networks (Computer)
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  • 154
    Publication Date: 1999-12-22
    Description: The SGS1 gene of the yeast Saccharomyces cerevisiae encodes a DNA helicase with homology to the human Bloom's syndrome gene BLM and the Werner's syndrome gene WRN. The SRS2 gene of yeast also encodes a DNA helicase. Simultaneous deletion of SGS1 and SRS2 is lethal in yeast. Here, using a conditional mutation of SGS1, it is shown that DNA replication and RNA polymerase I transcription are drastically inhibited in the srs2Delta sgs1-ts strain at the restrictive temperature. Thus, SGS1 and SRS2 function in DNA replication and RNA polymerase I transcription. These functions may contribute to the various defects observed in Werner's and Bloom's syndromes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, S K -- Johnson, R E -- Yu, S L -- Prakash, L -- Prakash, S -- CA80882/CA/NCI NIH HHS/ -- GM19261/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Dec 17;286(5448):2339-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Sealy Center for Molecular Science, University of Texas Medical Branch at Galveston, 6.104 Medical Research Building, 11th and Mechanic Streets, Galveston, TX 77555-1061, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10600744" target="_blank"〉PubMed〈/a〉
    Keywords: Bloom Syndrome/genetics ; Codon ; DNA Helicases/genetics/*physiology ; *DNA Replication ; DNA, Fungal/biosynthesis ; Fungal Proteins/genetics/*physiology ; Gene Deletion ; Genes, Fungal ; Humans ; Mutation ; RNA Polymerase I/metabolism ; RNA Polymerase II/metabolism ; RNA Polymerase III/metabolism ; RNA, Fungal/biosynthesis ; RNA, Messenger/biosynthesis/genetics ; RNA, Ribosomal/biosynthesis ; RNA, Transfer, Amino Acid-Specific/biosynthesis ; RecQ Helicases ; Saccharomyces cerevisiae/*genetics/metabolism ; *Saccharomyces cerevisiae Proteins ; *Transcription, Genetic ; Werner Syndrome/genetics
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  • 155
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-10-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Normile, D -- Pennisi, E -- New York, N.Y. -- Science. 1999 Sep 24;285(5436):2038-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10523188" target="_blank"〉PubMed〈/a〉
    Keywords: Chromosome Mapping ; Chromosomes, Human, Pair 22/*genetics ; Contig Mapping ; *Human Genome Project ; Humans ; International Cooperation ; *Sequence Analysis, DNA
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  • 156
    Publication Date: 1999-04-30
    Description: Infection of macaques with chimeric simian-human immunodeficiency virus (SHIV) provides an excellent in vivo model for examining the influence of envelope on HIV-1 pathogenesis. Infection with a pathogenic CCR5 (R5)-specific enveloped virus, SHIVSF162P, was compared with infection with the CXCR4 (X4)-specific SHIVSF33A.2. Despite comparable levels of viral replication, animals infected with the R5 and X4 SHIV had distinct pathogenic outcomes. SHIVSF162P caused a dramatic loss of CD4+ intestinal T cells followed by a gradual depletion in peripheral CD4+ T cells, whereas infection with SHIVSF33A.2 caused a profound loss in peripheral T cells that was not paralleled in the intestine. These results suggest a critical role of co-receptor utilization in viral pathogenesis and provide a reliable in vivo model for preclinical examination of HIV-1 vaccines and therapeutic agents in the context of the HIV-1 envelope protein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harouse, J M -- Gettie, A -- Tan, R C -- Blanchard, J -- Cheng-Mayer, C -- AI41945/AI/NIAID NIH HHS/ -- CA72822/CA/NCI NIH HHS/ -- R01 AI041945/AI/NIAID NIH HHS/ -- R01 CA072822/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1999 Apr 30;284(5415):816-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Aaron Diamond AIDS Research Center, The Rockefeller University, 455 First Avenue, 7th Floor, New York, NY 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10221916" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/immunology/*virology ; Animals ; *CD4 Lymphocyte Count ; CD4-CD8 Ratio ; Chimera ; Colon/immunology ; HIV-1/genetics/*pathogenicity/physiology ; Immunity, Mucosal ; Intestinal Mucosa/immunology ; Jejunum/immunology ; Macaca mulatta ; Reassortant Viruses ; Receptors, CCR5/*metabolism ; Receptors, CXCR4/*metabolism ; Simian Acquired Immunodeficiency Syndrome/immunology/virology ; Simian Immunodeficiency Virus/genetics/*pathogenicity/physiology ; Viral Load ; Viremia ; Virus Replication
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  • 157
    Publication Date: 1999-10-03
    Description: Precursors of alpha-defensin peptides require activation for bactericidal activity. In mouse small intestine, matrilysin colocalized with alpha-defensins (cryptdins) in Paneth cell granules, and in vitro it cleaved the pro segment from cryptdin precursors. Matrilysin-deficient (MAT-/-) mice lacked mature cryptdins and accumulated precursor molecules. Intestinal peptide preparations from MAT-/- mice had decreased antimicrobial activity. Orally administered bacteria survived in greater numbers and were more virulent in MAT-/- mice than in MAT+/+ mice. Thus, matrilysin functions in intestinal mucosal defense by regulating the activity of defensins, which may be a common role for this metalloproteinase in its numerous epithelial sites of expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, C L -- Ouellette, A J -- Satchell, D P -- Ayabe, T -- Lopez-Boado, Y S -- Stratman, J L -- Hultgren, S J -- Matrisian, L M -- Parks, W C -- New York, N.Y. -- Science. 1999 Oct 1;286(5437):113-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, Division of Allergy and Pulmonary Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA. wilson_c@kids.wustl.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10506557" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Catalysis ; Cytoplasmic Granules/enzymology ; Escherichia coli/growth & development ; Escherichia coli Infections/immunology/microbiology ; Female ; Humans ; *Immunity, Innate ; *Immunity, Mucosal ; Intestinal Mucosa/enzymology/immunology/microbiology ; Intestine, Small/enzymology/*immunology/microbiology ; Male ; Matrix Metalloproteinase 7 ; Metalloendopeptidases/genetics/*metabolism ; Mice ; Molecular Sequence Data ; Paneth Cells/enzymology ; Protein Precursors/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Salmonella typhimurium/growth & development/pathogenicity ; Tissue Extracts/pharmacology
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  • 158
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-06-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Av-Gay, Y -- New York, N.Y. -- Science. 1999 Jun 4;284(5420):1621.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10383337" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteria/*genetics/pathogenicity ; *Biotechnology ; *Containment of Biohazards ; Ecosystem ; *Genetic Engineering ; Guidelines as Topic ; Humans ; United States ; Viruses/*genetics/pathogenicity
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  • 159
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-05-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Culotta, E -- New York, N.Y. -- Science. 1999 Apr 23;284(5414):572-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10328732" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Ethiopia ; Facial Bones/anatomy & histology ; *Fossils ; History, Ancient ; *Hominidae/anatomy & histology/classification ; Humans ; Paleodontology ; Skull/anatomy & histology ; Tooth/anatomy & histology
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  • 160
    Publication Date: 1999-09-18
    Description: The antifungal defense of Drosophila is controlled by the spaetzle/Toll/cactus gene cassette. Here, a loss-of-function mutation in the gene encoding a blood serine protease inhibitor, Spn43Ac, was shown to lead to constitutive expression of the antifungal peptide drosomycin, and this effect was mediated by the spaetzle and Toll gene products. Spaetzle was cleaved by proteolytic enzymes to its active ligand form shortly after immune challenge, and cleaved Spaetzle was constitutively present in Spn43Ac-deficient flies. Hence, Spn43Ac negatively regulates the Toll signaling pathway, and Toll does not function as a pattern recognition receptor in the Drosophila host defense.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levashina, E A -- Langley, E -- Green, C -- Gubb, D -- Ashburner, M -- Hoffmann, J A -- Reichhart, J M -- New York, N.Y. -- Science. 1999 Sep 17;285(5435):1917-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉UPR 9022 CNRS, Institut de Biologie Moleculaire et Cellulaire, 15 Rue Rene Descartes, Strasbourg 67084, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10489372" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antifungal Agents/*metabolism ; *Antimicrobial Cationic Peptides ; Body Patterning ; Drosophila/embryology/genetics/*immunology ; *Drosophila Proteins ; Escherichia coli/genetics/immunology ; Genes, Insect ; Hemolymph/metabolism ; Insect Proteins/*biosynthesis/genetics/metabolism/*physiology ; Membrane Glycoproteins/genetics/*physiology ; Micrococcus luteus/immunology ; Molecular Sequence Data ; Mutagenesis ; Peptides/genetics/metabolism ; *Receptors, Cell Surface ; Recombinant Fusion Proteins/genetics/metabolism ; Serine Proteinase Inhibitors/genetics/*metabolism ; Serpins/genetics/*metabolism ; Signal Transduction ; Toll-Like Receptors ; Up-Regulation
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  • 161
    Publication Date: 1999-10-16
    Description: Dense genetic maps of human, mouse, and rat genomes that are based on coding genes and on microsatellite and single-nucleotide polymorphism markers have been complemented by precise gene homolog alignment with moderate-resolution maps of livestock, companion animals, and additional mammal species. Comparative genetic assessment expands the utility of these maps in gene discovery, in functional genomics, and in tracking the evolutionary forces that sculpted the genome organization of modern mammalian species.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Brien, S J -- Menotti-Raymond, M -- Murphy, W J -- Nash, W G -- Wienberg, J -- Stanyon, R -- Copeland, N G -- Jenkins, N A -- Womack, J E -- Marshall Graves, J A -- New York, N.Y. -- Science. 1999 Oct 15;286(5439):458-62, 479-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Genomic Diversity, National Cancer Institute, Frederick, MD 21702-1201, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10521336" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Domestic/genetics ; Base Sequence ; *Chromosome Mapping ; *Evolution, Molecular ; Genetic Markers ; *Genome ; *Genome, Human ; Humans ; Mammals/*genetics ; Mutation ; *Phylogeny ; Rodentia/genetics
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  • 162
    Publication Date: 1999-06-12
    Description: To monitor changes in alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionate (AMPA) receptor distribution in living neurons, the AMPA receptor subunit GluR1 was tagged with green fluorescent protein (GFP). This protein (GluR1-GFP) was functional and was transiently expressed in hippocampal CA1 neurons. In dendrites visualized with two-photon laser scanning microscopy or electron microscopy, most of the GluR1-GFP was intracellular, mimicking endogenous GluR1 distribution. Tetanic synaptic stimulation induced a rapid delivery of tagged receptors into dendritic spines as well as clusters in dendrites. These postsynaptic trafficking events required synaptic N-methyl-D-aspartate (NMDA) receptor activation and may contribute to the enhanced AMPA receptor-mediatedtransmission observed during long-term potentiation and activity-dependent synaptic maturation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shi, S H -- Hayashi, Y -- Petralia, R S -- Zaman, S H -- Wenthold, R J -- Svoboda, K -- Malinow, R -- New York, N.Y. -- Science. 1999 Jun 11;284(5421):1811-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉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/10364548" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Dendrites/*metabolism/ultrastructure ; Electric Stimulation ; Hippocampus/cytology/physiology ; Humans ; Long-Term Potentiation ; *Neuronal Plasticity ; Neurons/*physiology ; Organ Culture Techniques ; Rats ; Receptor Aggregation ; Receptors, AMPA/*metabolism ; Receptors, N-Methyl-D-Aspartate/*physiology ; Recombinant Fusion Proteins/metabolism ; Synapses/metabolism/*physiology ; Synaptic Transmission ; Tetany
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  • 163
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-12-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, I A -- New York, N.Y. -- Science. 1999 Dec 3;286(5446):1867-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA. wilson@scripps.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10610577" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens/*chemistry/immunology/metabolism ; Binding Sites ; CD4-Positive T-Lymphocytes/immunology/metabolism ; CD8-Positive T-Lymphocytes/immunology/metabolism ; Crystallography, X-Ray ; Histocompatibility Antigens Class I/chemistry/immunology/metabolism ; Histocompatibility Antigens Class II/*chemistry/immunology/metabolism ; Mice ; Models, Molecular ; Peptides/chemistry/immunology/metabolism ; Protein Binding ; Protein Conformation ; Protein Structure, Secondary ; Receptors, Antigen, T-Cell, alpha-beta/*chemistry/immunology/metabolism
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  • 164
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-02-05
    Description: Traditionally, the interest of population and evolutionary biologists in infectious diseases has been almost exclusively in their role as agents of natural selection in higher organisms. Recently, this interest has expanded to include the genetic structure and evolution of microparasite populations, the mechanisms of pathogenesis and the immune response, and the population biology, ecology, and evolutionary consequences of medical and public health interventions. This article describes recent work in these areas, emphasizing the ways in which quantitative, population-biological approaches have been contributing to the understanding of infectious disease and the design and evaluation of interventions for their treatment and prevention.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levin, B R -- Lipsitch, M -- Bonhoeffer, S -- New York, N.Y. -- Science. 1999 Feb 5;283(5403):806-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Emory University, 1510 Clifton Road, Atlanta, GA 30322, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9933155" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Physiological Phenomena ; *Biological Evolution ; Drug Resistance, Microbial ; Humans ; Infection/immunology/*microbiology ; Molecular Epidemiology ; Parasites/genetics/physiology ; Parasitic Diseases/immunology/*parasitology ; Population Dynamics ; Vaccination ; Virus Physiological Phenomena
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  • 165
    Publication Date: 1999-08-28
    Description: Class II transactivator (CIITA) is a global transcriptional coactivator of human leukocyte antigen-D (HLA-D) genes. CIITA contains motifs similar to guanosine triphosphate (GTP)-binding proteins. This report shows that CIITA binds GTP, and mutations in these motifs decrease its GTP-binding and transactivation activity. Substitution of these motifs with analogous sequences from Ras restores CIITA function. CIITA exhibits little GTPase activity, yet mutations in CIITA that confer GTPase activity reduce transcriptional activity. GTP binding by CIITA correlates with nuclear import. Thus, unlike other GTP-binding proteins, CIITA is involved in transcriptional activation that uses GTP binding to facilitate its own nuclear import.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harton, J A -- Cressman, D E -- Chin, K C -- Der, C J -- Ting, J P -- AI29564/AI/NIAID NIH HHS/ -- AI41751/AI/NIAID NIH HHS/ -- AI45580/AI/NIAID NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1999 Aug 27;285(5432):1402-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lineberger Comprehensive Cancer Center, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10464099" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Animals ; Binding Sites ; COS Cells ; Cell Line ; Cell Nucleus/*metabolism ; GTP-Binding Proteins/chemistry/genetics/*metabolism ; *Genes, MHC Class II ; Guanosine Triphosphate/*metabolism ; HLA-DR Antigens/genetics ; Humans ; Mutation ; *Nuclear Proteins ; Promoter Regions, Genetic ; Temperature ; Trans-Activators/chemistry/genetics/*metabolism ; Transcription Factors/metabolism ; *Transcriptional Activation
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  • 166
    Publication Date: 1999-09-25
    Description: Mass mortalities due to disease outbreaks have recently affected major taxa in the oceans. For closely monitored groups like corals and marine mammals, reports of the frequency of epidemics and the number of new diseases have increased recently. A dramatic global increase in the severity of coral bleaching in 1997-98 is coincident with high El Nino temperatures. Such climate-mediated, physiological stresses may compromise host resistance and increase frequency of opportunistic diseases. Where documented, new diseases typically have emerged through host or range shifts of known pathogens. Both climate and human activities may have also accelerated global transport of species, bringing together pathogens and previously unexposed host populations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harvell, C D -- Kim, K -- Burkholder, J M -- Colwell, R R -- Epstein, P R -- Grimes, D J -- Hofmann, E E -- Lipp, E K -- Osterhaus, A D -- Overstreet, R M -- Porter, J W -- Smith, G W -- Vasta, G R -- 1PO1 ES09563/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1999 Sep 3;285(5433):1505-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10498537" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aquaculture ; *Climate ; Cnidaria ; *Disease Outbreaks/*veterinary ; Humans ; Infection/epidemiology/*etiology/transmission/*veterinary ; *Marine Biology ; Oceans and Seas ; Water Pollution
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  • 167
    Publication Date: 1999-12-11
    Description: Natural antibodies are often dismissed from immunological analysis as "background," but they may play an important role in conferring immunity against infections. In antibody-free mice infected with various viruses or with Listeria monocytogenes, viral or bacterial titers in peripheral organs, including the kidney and brain, were 10 to 100 times greater than in antibody-competent mice (and enhanced their susceptibility to some infections), and titers in secondary lymphoid organs were 10 to 100 times lower than in antibody-competent mice. Thus, natural antibodies play a crucial role by preventing pathogen dissemination to vital organs and by improving immunogenicity through enhanced antigen-trapping in secondary lymphoid organs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ochsenbein, A F -- Fehr, T -- Lutz, C -- Suter, M -- Brombacher, F -- Hengartner, H -- Zinkernagel, R M -- New York, N.Y. -- Science. 1999 Dec 10;286(5447):2156-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Experimental Immunology, University Hospital Zurich, Schmelzbergstrasse 12, 8091 Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10591647" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Bacterial/blood/immunology ; Antibodies, Viral/blood/immunology ; Bacterial Infections/*immunology/microbiology ; Germ-Free Life ; *Immunity, Innate ; Immunoglobulin M/blood/*immunology ; Kidney/microbiology/virology ; Listeria monocytogenes/immunology/physiology ; Listeriosis/immunology ; Lymphocytic choriomeningitis virus/immunology/physiology ; Lymphoid Tissue/immunology/microbiology/virology ; Mice ; Mice, Inbred C57BL ; Neutralization Tests ; Rhabdoviridae Infections/immunology/virology ; Specific Pathogen-Free Organisms ; Spleen/microbiology/virology ; Vaccinia virus/immunology/physiology ; Vesicular stomatitis Indiana virus/immunology/physiology ; Virus Diseases/*immunology/virology ; Virus Replication
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  • 168
    Publication Date: 1999-01-23
    Description: The plant hormone abscisic acid (ABA) regulates potassium and chloride ion channels at the plasma membrane of guard cells, leading to stomatal closure that reduces transpirational water loss from the leaf. The tobacco Nt-SYR1 gene encodes a syntaxin that is associated with the plasma membrane. Syntaxins and related SNARE proteins aid intracellular vesicle trafficking, fusion, and secretion. Disrupting Nt-Syr1 function by cleavage with Clostridium botulinum type C toxin or competition with a soluble fragment of Nt-Syr1 prevents potassium and chloride ion channel response to ABA in guard cells and implicates Nt-Syr1 in an ABA-signaling cascade.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leyman, B -- Geelen, D -- Quintero, F J -- Blatt, M R -- New York, N.Y. -- Science. 1999 Jan 22;283(5401):537-40.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Plant Physiology and Biophysics, University of London, Wye College, Wye, Kent TN25 5AH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9915701" target="_blank"〉PubMed〈/a〉
    Keywords: Abscisic Acid/*pharmacology ; Amino Acid Sequence ; Animals ; Botulinum Toxins/metabolism ; Cell Membrane/physiology ; Chloride Channels/*physiology ; Genes, Plant ; Genetic Complementation Test ; Ion Channel Gating/drug effects ; Membrane Proteins/chemistry/genetics/*physiology ; Molecular Sequence Data ; Oocytes ; Patch-Clamp Techniques ; Plant Growth Regulators/*pharmacology ; Plant Leaves/*physiology ; *Plants, Toxic ; Potassium Channels/*physiology ; Qa-SNARE Proteins ; Saccharomyces cerevisiae/genetics/growth & development ; Signal Transduction ; Tobacco/genetics/*physiology ; Xenopus
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  • 169
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-08-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wojcik, J F -- New York, N.Y. -- Science. 1999 Jul 30;285(5428):663.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10454918" target="_blank"〉PubMed〈/a〉
    Keywords: *Biological Evolution ; Humans ; *Religion and Science
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  • 170
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-01-08
    Description: Humans show considerable interindividual variation in susceptibility to weight gain in response to overeating. The physiological basis of this variation was investigated by measuring changes in energy storage and expenditure in 16 nonobese volunteers who were fed 1000 kilocalories per day in excess of weight-maintenance requirements for 8 weeks. Two-thirds of the increases in total daily energy expenditure was due to increased nonexercise activity thermogenesis (NEAT), which is associated with fidgeting, maintenance of posture, and other physical activities of daily life. Changes in NEAT accounted for the 10-fold differences in fat storage that occurred and directly predicted resistance to fat gain with overfeeding (correlation coefficient = 0.77, probability 〈 0.001). These results suggest that as humans overeat, activation of NEAT dissipates excess energy to preserve leanness and that failure to activate NEAT may result in ready fat gain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levine, J A -- Eberhardt, N L -- Jensen, M D -- DK45343/DK/NIDDK NIH HHS/ -- DK50456/DK/NIDDK NIH HHS/ -- M01 RR00535/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1999 Jan 8;283(5399):212-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Endocrine Research Unit, Mayo Clinic and Mayo Foundation, 200 First Street Southwest, Rochester, MN 55905, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9880251" target="_blank"〉PubMed〈/a〉
    Keywords: Activities of Daily Living ; *Adipose Tissue ; Adult ; Basal Metabolism ; Body Composition ; Calorimetry, Indirect ; *Energy Intake ; *Energy Metabolism ; Exercise ; Female ; Humans ; Hyperphagia/*physiopathology ; Male ; *Movement ; Posture ; *Weight Gain
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  • 171
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-10-16
    Description: Epigenetics is the study of heritable changes in gene expression that occur without a change in DNA sequence. Epigenetic phenomena have major economic and medical relevance, and several, such as imprinting and paramutation, violate Mendelian principles. Recent discoveries link the recognition of nucleic acid sequence homology to the targeting of DNA methylation, chromosome remodeling, and RNA turnover. Although epigenetic mechanisms help to protect cells from parasitic elements, this defense can complicate the genetic manipulation of plants and animals. Essential for normal development, epigenetic controls become misdirected in cancer cells and other human disease syndromes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wolffe, A P -- Matzke, M A -- New York, N.Y. -- Science. 1999 Oct 15;286(5439):481-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Embryology, National Institute of Child Heath and Human Development, NIH, Building 18T, Room 106, Bethesda, MD 20892-5431, USA. awlme@helix.nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10521337" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA Methylation ; Evolution, Molecular ; *Gene Expression Regulation ; Gene Expression Regulation, Developmental ; *Gene Silencing ; Genetic Diseases, Inborn/genetics ; Genome ; Humans ; Neoplasms/genetics ; RNA/genetics/metabolism ; Repetitive Sequences, Nucleic Acid
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  • 172
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-06-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉L'Heureux, N -- Germain, L -- Auger, F A -- New York, N.Y. -- Science. 1999 Jun 4;284(5420):1621-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10383338" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biomedical Engineering ; *Blood Vessels/physiology/transplantation ; *Culture Techniques ; Dogs ; Endothelium, Vascular ; Graft Survival ; Humans ; Transplantation, Heterologous
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  • 173
    Publication Date: 1999-10-09
    Description: CD2-associated protein (CD2AP) is an 80-kilodalton protein that is critical for stabilizing contacts between T cells and antigen-presenting cells. In CD2AP-deficient mice, immune function was compromised, but the mice died at 6 to 7 weeks of age from renal failure. In the kidney, CD2AP was expressed primarily in glomerular epithelial cells. Knockout mice exhibited defects in epithelial cell foot processes, accompanied by mesangial cell hyperplasia and extracellular matrix deposition. Supporting a role for CD2AP in the specialized cell junction known as the slit diaphragm, CD2AP associated with nephrin, the primary component of the slit diaphragm.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shih, N Y -- Li, J -- Karpitskii, V -- Nguyen, A -- Dustin, M L -- Kanagawa, O -- Miner, J H -- Shaw, A S -- New York, N.Y. -- Science. 1999 Oct 8;286(5438):312-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Immunology and Department of Pathology, Washington University, Saint Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10514378" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing ; Animals ; Basement Membrane/ultrastructure ; Cytoskeletal Proteins ; Epithelial Cells/metabolism/ultrastructure ; Extracellular Matrix Proteins/metabolism ; Glomerular Mesangium/metabolism/ultrastructure ; Intercellular Junctions/metabolism/ultrastructure ; Kidney Glomerulus/blood supply/*metabolism/*ultrastructure ; Lymphocyte Activation ; Membrane Proteins ; Mice ; Mice, Knockout ; Microscopy, Electron ; Nephrotic Syndrome/*congenital/genetics/metabolism/pathology ; Proteins/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; T-Lymphocytes/immunology
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  • 174
    Publication Date: 1999-11-05
    Description: Glutamatergic neurotransmission is controlled by presynaptic metabotropic glutamate receptors (mGluRs). A subdomain in the intracellular carboxyl-terminal tail of group III mGluRs binds calmodulin and heterotrimeric guanosine triphosphate-binding protein (G protein) betagamma subunits in a mutually exclusive manner. Mutations interfering with calmodulin binding and calmodulin antagonists inhibit G protein-mediated modulation of ionic currents by mGluR 7. Calmodulin antagonists also prevent inhibition of excitatory neurotransmission via presynaptic mGluRs. These results reveal a novel mechanism of presynaptic modulation in which Ca(2+)-calmodulin is required to release G protein betagamma subunits from the C-tail of group III mGluRs in order to mediate glutamatergic autoinhibition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Connor, V -- El Far, O -- Bofill-Cardona, E -- Nanoff, C -- Freissmuth, M -- Karschin, A -- Airas, J M -- Betz, H -- Boehm, S -- New York, N.Y. -- Science. 1999 Nov 5;286(5442):1180-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurochemistry, Max Planck Institute for Brain Research, Deutschordenstrasse 46, 60528 Frankfurt, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10550060" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcium/metabolism ; Calmodulin/antagonists & inhibitors/*metabolism ; Cells, Cultured ; Dimerization ; G Protein-Coupled Inwardly-Rectifying Potassium Channels ; GTP-Binding Proteins/*metabolism ; Glutamic Acid/*metabolism ; Hippocampus/cytology/metabolism ; Humans ; Mice ; Molecular Sequence Data ; Neurons/metabolism ; Potassium Channels/metabolism ; *Potassium Channels, Inwardly Rectifying ; Presynaptic Terminals/metabolism ; Propionates/pharmacology ; Rats ; Rats, Sprague-Dawley ; Receptors, Metabotropic Glutamate/antagonists & inhibitors/*metabolism ; Recombinant Fusion Proteins/metabolism ; Sesterterpenes ; Signal Transduction ; Swine ; *Synaptic Transmission ; Terpenes/pharmacology
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  • 175
    Publication Date: 1999-06-26
    Description: Regulation of circadian period in humans was thought to differ from that of other species, with the period of the activity rhythm reported to range from 13 to 65 hours (median 25.2 hours) and the period of the body temperature rhythm reported to average 25 hours in adulthood, and to shorten with age. However, those observations were based on studies of humans exposed to light levels sufficient to confound circadian period estimation. Precise estimation of the periods of the endogenous circadian rhythms of melatonin, core body temperature, and cortisol in healthy young and older individuals living in carefully controlled lighting conditions has now revealed that the intrinsic period of the human circadian pacemaker averages 24.18 hours in both age groups, with a tight distribution consistent with other species. These findings have important implications for understanding the pathophysiology of disrupted sleep in older people.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Czeisler, C A -- Duffy, J F -- Shanahan, T L -- Brown, E N -- Mitchell, J F -- Rimmer, D W -- Ronda, J M -- Silva, E J -- Allan, J S -- Emens, J S -- Dijk, D J -- Kronauer, R E -- MO1-RR02635/RR/NCRR NIH HHS/ -- P01-AG09975/AG/NIA NIH HHS/ -- R01-GM53559/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Jun 25;284(5423):2177-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Circadian, Neuroendocrine, and Sleep Disorders Section, Division of Endocrinology, Department of Medicine, Harvard Medical School, Brigham and Women's Hospital, 221 Longwood Avenue, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10381883" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Aging/*physiology ; Biological Clocks/genetics/*physiology ; Body Temperature ; Circadian Rhythm/genetics/*physiology ; Darkness ; Female ; Humans ; Hydrocortisone/blood ; Light ; Male ; Melatonin/blood ; Middle Aged ; Sleep
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  • 176
    Publication Date: 1999-02-26
    Description: Chlamydia infections are epidemiologically linked to human heart disease. A peptide from the murine heart muscle-specific alpha myosin heavy chain that has sequence homology to the 60-kilodalton cysteine-rich outer membrane proteins of Chlamydia pneumoniae, C. psittaci, and C. trachomatis was shown to induce autoimmune inflammatory heart disease in mice. Injection of the homologous Chlamydia peptides into mice also induced perivascular inflammation, fibrotic changes, and blood vessel occlusion in the heart, as well as triggering T and B cell reactivity to the homologous endogenous heart muscle-specific peptide. Chlamydia DNA functioned as an adjuvant in the triggering of peptide-induced inflammatory heart disease. Infection with C. trachomatis led to the production of autoantibodies to heart muscle-specific epitopes. Thus, Chlamydia-mediated heart disease is induced by antigenic mimicry of a heart muscle-specific protein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bachmaier, K -- Neu, N -- de la Maza, L M -- Pal, S -- Hessel, A -- Penninger, J M -- New York, N.Y. -- Science. 1999 Feb 26;283(5406):1335-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Amgen Institute, Ontario Cancer Institute, Departments of Medical Biophysics and Immunology, University of Toronto, Toronto, Ontario M5G 2C1, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10037605" target="_blank"〉PubMed〈/a〉
    Keywords: Adoptive Transfer ; Amino Acid Sequence ; Animals ; Antigens, Bacterial/chemistry/immunology ; Autoantibodies/biosynthesis ; Autoimmune Diseases/immunology/*microbiology/pathology ; B-Lymphocytes/immunology ; Bacterial Outer Membrane Proteins/chemistry/*immunology ; CD4-Positive T-Lymphocytes/immunology ; Chlamydia/*immunology ; Chlamydia Infections/complications/*immunology ; Chlamydia trachomatis/immunology ; CpG Islands ; Humans ; Immunization ; Lymphocyte Activation ; Mice ; Mice, Inbred BALB C ; *Molecular Mimicry ; Molecular Sequence Data ; Myocarditis/immunology/*microbiology/pathology ; Myocardium/immunology/pathology ; Myosin Heavy Chains/chemistry/*immunology ; Oligodeoxyribonucleotides/immunology ; Sequence Homology, Amino Acid
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  • 177
    Publication Date: 1999-05-29
    Description: Endoglin is a transforming growth factor-beta (TGF-beta) binding protein expressed on the surface of endothelial cells. Loss-of-function mutations in the human endoglin gene ENG cause hereditary hemorrhagic telangiectasia (HHT1), a disease characterized by vascular malformations. Here it is shown that by gestational day 11.5, mice lacking endoglin die from defective vascular development. However, in contrast to mice lacking TGF-beta, vasculogenesis was unaffected. Loss of endoglin caused poor vascular smooth muscle development and arrested endothelial remodeling. These results demonstrate that endoglin is essential for angiogenesis and suggest a pathogenic mechanism for HHT1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, D Y -- Sorensen, L K -- Brooke, B S -- Urness, L D -- Davis, E C -- Taylor, D G -- Boak, B B -- Wendel, D P -- K08 HL03490-03/HL/NHLBI NIH HHS/ -- T35 HL07744-06/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1999 May 28;284(5419):1534-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Human Molecular Biology and Genetics, Department of Human Genetics, Howard Hughes Medical Institute, University of Utah, Salt Lake City, UT 84112-5330, USA. dean.li@hci.utah.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10348742" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD ; Antigens, CD31/analysis ; Blood Vessels/cytology/*embryology/metabolism ; Cell Differentiation ; Crosses, Genetic ; Endothelium, Vascular/cytology/*embryology/metabolism ; Female ; Gene Targeting ; In Situ Hybridization ; Male ; Mice ; Mice, Inbred C57BL ; Microscopy, Electron ; Muscle, Smooth, Vascular/cytology/*embryology ; *Neovascularization, Physiologic ; Receptors, Cell Surface ; Signal Transduction ; Transforming Growth Factor beta/metabolism ; Vascular Cell Adhesion Molecule-1/genetics/*physiology ; Yolk Sac/ultrastructure
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  • 178
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-07-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wolpoff, M H -- New York, N.Y. -- Science. 1999 Jun 11;284(5421):1774-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10391795" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Hominidae/*classification/genetics ; Humans ; Phylogeny
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  • 179
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-10-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bagla, P -- New York, N.Y. -- Science. 1999 Oct 1;286(5437):25, 27.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10532885" target="_blank"〉PubMed〈/a〉
    Keywords: *Academies and Institutes/economics ; *Brain ; Humans ; India ; International Cooperation ; *Research
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  • 180
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-07-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wong, V -- Goodenough, D A -- New York, N.Y. -- Science. 1999 Jul 2;285(5424):62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10428705" target="_blank"〉PubMed〈/a〉
    Keywords: Calcium Channels/metabolism ; Cell Membrane/metabolism/ultrastructure ; Claudins ; Cloning, Molecular ; Humans ; Ion Channels ; Ion Transport ; Kidney Diseases/genetics/*metabolism ; Kidney Tubules/*metabolism/ultrastructure ; Lipid Bilayers/metabolism ; Magnesium/blood/*metabolism ; Magnesium Deficiency/genetics/*metabolism ; Membrane Proteins/genetics/*physiology ; Mutation ; Tight Junctions/*metabolism
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  • 181
    Publication Date: 1999-07-20
    Description: Graft versus host disease, an alloimmune attack on host tissues mounted by donor T cells, is the most important toxicity of allogeneic bone marrow transplantation. The mechanism by which allogeneic T cells are initially stimulated is unknown. In a murine allogeneic bone marrow transplantation model it was found that, despite the presence of numerous donor antigen-presenting cells, only host-derived antigen-presenting cells initiated graft versus host disease. Thus, strategies for preventing graft versus host disease could be developed that are based on inactivating host antigen-presenting cells. Such strategies could expand the safety and application of allogeneic bone marrow transplantation in treatment of common genetic and neoplastic diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shlomchik, W D -- Couzens, M S -- Tang, C B -- McNiff, J -- Robert, M E -- Liu, J -- Shlomchik, M J -- Emerson, S G -- P50HL-54516/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1999 Jul 16;285(5426):412-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10411505" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen-Presenting Cells/*immunology ; Bone Marrow Transplantation/adverse effects/*immunology ; CD8-Positive T-Lymphocytes/*immunology ; Dendritic Cells/immunology ; Graft vs Host Disease/immunology/*prevention & control ; H-2 Antigens/immunology ; Lymph Nodes/immunology ; Mice ; Mice, Inbred C3H ; Mice, Inbred C57BL ; Mice, Inbred Strains ; Mice, Knockout ; Minor Histocompatibility Antigens/immunology ; Spleen/immunology ; Transplantation Chimera
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  • 182
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-04-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dan, Z -- Lei, X -- New York, N.Y. -- Science. 1999 Mar 26;283(5410):1990-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10206897" target="_blank"〉PubMed〈/a〉
    Keywords: Academies and Institutes/*legislation & jurisprudence ; Aged ; Aged, 80 and over ; Aging/genetics ; *Blood Specimen Collection ; China ; Databases, Nucleic Acid ; Disclosure ; *Genetic Research ; Health Surveys ; Humans ; Informed Consent ; International Cooperation ; Internationality ; Life Style ; *Longevity/genetics ; Mass Media/*legislation & jurisprudence ; Research Support as Topic
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  • 183
    Publication Date: 1999-04-09
    Description: Imprinted genes display parent-of-origin-dependent monoallelic expression that apparently regulates complex mammalian traits, including growth and behavior. The Peg3 gene is expressed in embryos and the adult brain from the paternal allele only. A mutation in the Peg3 gene resulted in growth retardation, as well as a striking impairment of maternal behavior that frequently resulted in death of the offspring. This result may be partly due to defective neuronal connectivity, as well as reduced oxytocin neurons in the hypothalamus, because mutant mothers were deficient in milk ejection. This study provides further insights on the evolution of epigenetic regulation of imprinted gene dosage in modulating mammalian growth and behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, L -- Keverne, E B -- Aparicio, S A -- Ishino, F -- Barton, S C -- Surani, M A -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1999 Apr 9;284(5412):330-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wellcome CRC Institute of Cancer and Developmental Biology, and Physiological Laboratory, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10195900" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; Brain/metabolism ; Crosses, Genetic ; Female ; Gene Expression ; Gene Targeting ; *Genomic Imprinting ; *Growth ; Hypothalamus/cytology/metabolism ; Kruppel-Like Transcription Factors ; Lactation ; Male ; *Maternal Behavior ; Mice ; Mutation ; Neural Pathways ; Neurons/metabolism ; Oxytocin/metabolism ; Phenotype ; *Protein Kinases ; Proteins/genetics/*physiology ; *Transcription Factors ; *Weight Gain
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  • 184
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-02-19
    Description: A single kinesin molecule can move "processively" along a microtubule for more than 1 micrometer before detaching from it. The prevailing explanation for this processive movement is the "walking model," which envisions that each of two motor domains (heads) of the kinesin molecule binds coordinately to the microtubule. This implies that each kinesin molecule must have two heads to "walk" and that a single-headed kinesin could not move processively. Here, a motor-domain construct of KIF1A, a single-headed kinesin superfamily protein, was shown to move processively along the microtubule for more than 1 micrometer. The movement along the microtubules was stochastic and fitted a biased Brownian-movement model.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Okada, Y -- Hirokawa, N -- New York, N.Y. -- Science. 1999 Feb 19;283(5405):1152-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology and Anatomy, Graduate School of Medicine, University of Tokyo, Hongo, Tokyo 113-0033, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10024239" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Amino Acid Sequence ; Animals ; Catalytic Domain ; Diffusion ; Drosophila ; Kinesin/chemistry/*metabolism ; Kinetics ; Microscopy, Fluorescence ; Microtubules/*metabolism ; Models, Chemical ; Molecular Motor Proteins/chemistry/*metabolism ; Molecular Sequence Data ; Nerve Tissue Proteins/chemistry/*metabolism ; Recombinant Fusion Proteins ; Stochastic Processes ; Thermodynamics
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  • 185
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-04-02
    Description: A general problem in biology is how to incorporate information about evolutionary history and adaptation into taxonomy. The problem is exemplified in attempts to define our own genus, Homo. Here conventional criteria for allocating fossil species to Homo are reviewed and are found to be either inappropriate or inoperable. We present a revised definition, based on verifiable criteria, for Homo and conclude that two species, Homo habilis and Homo rudolfensis, do not belong in the genus. The earliest taxon to satisfy the criteria is Homo ergaster, or early African Homo erectus, which currently appears in the fossil record at about 1.9 million years ago.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wood, B -- Collard, M -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1999 Apr 2;284(5411):65-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anthropology, George Washington University, 2110 G Street NW, Washington, DC 20052, USA. bwood@gwu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10102822" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Animals ; Biological Evolution ; Body Constitution ; Brain/anatomy & histology ; *Fossils ; Hominidae/anatomy & histology/*classification ; Humans ; Jaw/anatomy & histology ; Locomotion ; Phylogeny ; Terminology as Topic
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  • 186
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-09-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bagla, P -- New York, N.Y. -- Science. 1999 Aug 13;285(5430):997.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10475848" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Experimentation ; *Animal Welfare ; Animals ; *Animals, Laboratory ; *Drug Evaluation, Preclinical ; Government Regulation ; India ; *Macaca mulatta
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  • 187
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-04-24
    Description: Retroviral DNA integration is catalyzed by the viral protein integrase. Here, it is shown that DNA-dependent protein kinase (DNA-PK), a host cell protein, also participates in the reaction. DNA-PK-deficient murine scid cells infected with three different retroviruses showed a substantial reduction in retroviral DNA integration and died by apoptosis. Scid cell killing was not observed after infection with an integrase-defective virus, suggesting that abortive integration is the trigger for death in these DNA repair-deficient cells. These results suggest that the initial events in retroviral integration are detected as DNA damage by the host cell and that completion of the integration process requires the DNA-PK-mediated repair pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Daniel, R -- Katz, R A -- Skalka, A M -- AI40721/AI/NIAID NIH HHS/ -- AI40835/AI/NIAID NIH HHS/ -- CA71515/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1999 Apr 23;284(5414):644-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Cancer Research, Fox Chase Cancer Center, 7701 Burholme Avenue, Philadelphia, PA 19111, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10213687" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; CHO Cells ; Cell Survival ; Cells, Cultured ; Cricetinae ; DNA Damage ; *DNA Repair ; DNA, Viral/*genetics/metabolism ; DNA-Activated Protein Kinase ; *DNA-Binding Proteins ; Genetic Vectors ; HIV-1/genetics ; Integrases/genetics/metabolism ; Mice ; Mutation ; Protein-Serine-Threonine Kinases/*metabolism ; Retroviridae/*genetics/physiology ; *Virus Integration ; Virus Replication
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  • 188
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-02-05
    Description: Costimulation of both the CD3 and CD28 receptors is essential for T cell activation. Induction of adenosine 3',5'-monophosphate (cAMP)-specific phosphodiesterase-7 (PDE7) was found to be a consequence of such costimulation. Increased PDE7 in T cells correlated with decreased cAMP, increased interleukin-2 expression, and increased proliferation. Selectively reducing PDE7 expression with a PDE7 antisense oligonucleotide inhibited T cell proliferation; inhibition was reversed by blocking the cAMP signaling pathways that operate through cAMP-dependent protein kinase (PKA). Thus, PDE7 induction and consequent suppression of PKA activity is required for T cell activation, and inhibition of PDE7 could be an approach to treating T cell-dependent disorders.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, L -- Yee, C -- Beavo, J A -- DK21723/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1999 Feb 5;283(5403):848-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology and Molecular and Cellular Biology Program, Box 357280, University of Washington School of Medicine, Seattle, WA 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9933169" target="_blank"〉PubMed〈/a〉
    Keywords: 3',5'-Cyclic-AMP Phosphodiesterases/*biosynthesis/genetics/metabolism ; Antibodies ; Antigens, CD28/immunology/*physiology ; Antigens, CD3/immunology/*physiology ; CD4-Positive T-Lymphocytes/enzymology/immunology ; Cells, Cultured ; Cyclic AMP/metabolism ; Cyclic AMP-Dependent Protein Kinases/metabolism ; Cyclic Nucleotide Phosphodiesterases, Type 7 ; Enzyme Induction ; Humans ; Interleukin-2/biosynthesis ; Isoenzymes/*biosynthesis/genetics/metabolism ; *Lymphocyte Activation ; Oligonucleotides, Antisense/pharmacology ; RNA, Messenger/genetics/metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; T-Lymphocytes/*enzymology/*immunology/metabolism ; Tumor Cells, Cultured
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 189
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-07-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bagla, P -- New York, N.Y. -- Science. 1999 Jul 9;285(5425):180-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10428709" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Experimentation ; Animal Welfare/*legislation & jurisprudence ; Animals ; *Animals, Laboratory ; *Government Regulation ; India ; *Research
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 190
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-11-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Daniel, T M -- New York, N.Y. -- Science. 1999 Oct 8;286(5438):239.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10577189" target="_blank"〉PubMed〈/a〉
    Keywords: Bronchiectasis/history ; Depressive Disorder/*history/pathology ; *Famous Persons ; Fingers/*pathology ; History, 19th Century ; Humans ; Literature, Modern/*history ; Male ; Medicine in Art ; Paintings ; Tuberculosis/*history/pathology
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  • 191
    Publication Date: 1999-05-21
    Description: The nucleotide exchange activity of RCC1, the only known nucleotide exchange factor for Ran, a Ras-like small guanosine triphosphatase, was required for microtubule aster formation with or without demembranated sperm in Xenopus egg extracts arrested in meiosis II. Consistently, in the RCC1-depleted egg extracts, Ran guanosine triphosphate (RanGTP), but not Ran guanosine diphosphate (RanGDP), induced self-organization of microtubule asters, and the process required the activity of dynein. Thus, Ran was shown to regulate formation of the microtubule network.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ohba, T -- Nakamura, M -- Nishitani, H -- Nishimoto, T -- New York, N.Y. -- Science. 1999 May 21;284(5418):1356-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Graduate School of Medical Science, Kyushu University, Maidashi Higashi-ku, Fukuoka 812-8582, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10334990" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Cycle Proteins ; Cell Extracts ; Cell Nucleus/metabolism ; DNA-Binding Proteins/metabolism ; Dyneins/metabolism ; Female ; GTP Phosphohydrolases/*metabolism ; *Guanine Nucleotide Exchange Factors ; Guanosine Diphosphate/metabolism ; Guanosine Triphosphate/*metabolism ; Male ; Microtubules/chemistry/*metabolism/ultrastructure ; Nuclear Proteins/analysis/*metabolism ; Ovum ; Recombinant Proteins/metabolism ; Sperm Head/physiology ; Spindle Apparatus/chemistry/*metabolism/ultrastructure ; Xenopus ; *Xenopus Proteins ; ran GTP-Binding Protein
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  • 192
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-10-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hawkins, M M -- Barratt, C L -- New York, N.Y. -- Science. 1999 Oct 1;286(5437):51-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10532889" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; Congenital Abnormalities/etiology ; Developmental Disabilities/etiology ; Female ; Fertilization in Vitro/*adverse effects ; Great Britain ; Humans ; Male ; Neoplasms/etiology ; Pregnancy ; Pregnancy Outcome ; Registries ; Risk Factors
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 193
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-08-24
    Description: Clathrin-mediated endocytosis is initiated by the recruitment of the clathrin adaptor protein AP-2 to the plasma membrane where the membrane protein synaptotagmin is thought to act as a docking site. AP-2 also interacts with endocytic motifs present in other cargo proteins. Peptides with a tyrosine-based endocytic motif stimulated binding of AP-2 to synaptotagmin and enhanced AP-2 recruitment to the plasma membrane of neuronal and non-neuronal cells. This suggests a mechanism by which nucleation of clathrin-coated pits is stimulated by the loading of cargo proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Haucke, V -- De Camilli, P -- CA46128/CA/NCI NIH HHS/ -- NS36252/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1999 Aug 20;285(5431):1268-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology and Howard Hughes Medical Institute, Yale University School of Medicine, 295 Congress Avenue, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10455054" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Protein Complex alpha Subunits ; Adaptor Proteins, Vesicular Transport ; Animals ; Binding Sites ; CHO Cells ; *Calcium-Binding Proteins ; Cattle ; Cell Membrane/metabolism ; Clathrin/*metabolism ; Coated Pits, Cell-Membrane/*metabolism ; Cricetinae ; *Endocytosis ; Membrane Glycoproteins/chemistry/*metabolism ; Membrane Proteins/*metabolism ; Nerve Tissue Proteins/chemistry/*metabolism ; Neurons/metabolism ; Oligopeptides/chemistry/metabolism/*pharmacology ; Phospholipase D/metabolism ; Protein Binding ; Rats ; Recombinant Fusion Proteins/metabolism ; Synaptic Membranes/*metabolism ; Synaptotagmins ; Tyrosine/chemistry
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  • 194
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-04-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bagla, P -- New York, N.Y. -- Science. 1999 Mar 12;283(5408):1614-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10189310" target="_blank"〉PubMed〈/a〉
    Keywords: Academies and Institutes ; *Economics, Pharmaceutical ; *Ethnic Groups ; Humans ; India ; Medicine, Ayurvedic ; Plant Extracts/*economics ; *Plants, Medicinal
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  • 195
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-08-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Woodruff, D S -- New York, N.Y. -- Science. 1999 Aug 6;285(5429):836.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10454930" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Behavior, Animal ; Culture ; *Genetic Variation ; Pan troglodytes/*genetics
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  • 196
    Publication Date: 1999-07-31
    Description: Many immune receptors are composed of separate ligand-binding and signal-transducing subunits. In natural killer (NK) and T cells, DAP10 was identified as a cell surface adaptor protein in an activating receptor complex with NKG2D, a receptor for the stress-inducible and tumor-associated major histocompatibility complex molecule MICA. Within the DAP10 cytoplasmic domain, an Src homology 2 (SH2) domain-binding site was capable of recruiting the p85 subunit of the phosphatidylinositol 3-kinase (PI 3-kinase), providing for NKG2D-dependent signal transduction. Thus, NKG2D-DAP10 receptor complexes may activate NK and T cell responses against MICA-bearing tumors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, J -- Song, Y -- Bakker, A B -- Bauer, S -- Spies, T -- Lanier, L L -- Phillips, J H -- AI30581/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1999 Jul 30;285(5428):730-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉DNAX Research Institute, 901 California Avenue, Palo Alto, CA 94304, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10426994" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding Sites ; Cell Line ; Cytotoxicity, Immunologic ; Humans ; Killer Cells, Natural/*immunology/metabolism ; Ligands ; *Lymphocyte Activation ; Membrane Proteins/chemistry/genetics/*metabolism ; Mice ; Molecular Sequence Data ; NK Cell Lectin-Like Receptor Subfamily K ; Neoplasms/immunology ; Phosphatidylinositol 3-Kinases/metabolism ; Phosphorylation ; Phosphotyrosine/metabolism ; Receptors, Immunologic/chemistry/genetics/*metabolism ; Receptors, Natural Killer Cell ; Signal Transduction ; T-Lymphocytes/*immunology/metabolism ; Tumor Cells, Cultured ; src Homology Domains
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  • 197
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-09-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bagla, P -- New York, N.Y. -- Science. 1999 Sep 3;285(5433):1480-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10498530" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Communication ; Animals ; Anura/*physiology ; Female ; Grasshoppers/*physiology ; Male
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  • 198
    Publication Date: 1999-07-03
    Description: Lymphocyte development is critically influenced by self-antigens. T cells are subject to both positive and negative selection, depending on their degree of self-reactivity. Although B cells are subject to negative selection, it has been difficult to test whether self-antigen plays any positive role in B cell development. A murine model system of naturally generated autoreactive B cells with a germ line gene-encoded specificity for the Thy-1 (CD90) glycoprotein was developed, in which the presence of self-antigen promotes B cell accumulation and serum autoantibody secretion. Thus, B cells can be subject to positive selection, generated, and maintained on the basis of their autoreactivity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hayakawa, K -- Asano, M -- Shinton, S A -- Gui, M -- Allman, D -- Stewart, C L -- Silver, J -- Hardy, R R -- New York, N.Y. -- Science. 1999 Jul 2;285(5424):113-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Cancer Research, Fox Chase Cancer Center, 7701 Burholme Avenue, Philadelphia, PA 19111, USA. K_Hayakawa@fccc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10390361" target="_blank"〉PubMed〈/a〉
    Keywords: Aging/immunology ; Animals ; Antigens, CD5/analysis ; Antigens, Thy-1/*immunology ; Autoantibodies/*biosynthesis/blood/immunology ; Autoantigens/*immunology ; B-Lymphocyte Subsets/*immunology ; Genes, Immunoglobulin ; Hybridomas ; Immunity, Innate ; Immunologic Surveillance ; Mice ; Mice, SCID ; Mice, Transgenic ; Receptors, Antigen, B-Cell/immunology ; Signal Transduction ; T-Lymphocytes/immunology
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  • 199
    Publication Date: 1999-04-09
    Description: Phosphorylation of inhibitor of kappa B (IkappaB) proteins is an important step in the activation of the transcription nuclear factor kappa B (NF-kappaB) and requires two IkappaB kinases, IKK1 (IKKalpha) and IKK2 (IKKbeta). Mice that are devoid of the IKK2 gene had extensive liver damage from apoptosis and died as embryos, but these mice could be rescued by the inactivation of the gene encoding tumor necrosis factor receptor 1. Mouse embryonic fibroblast cells that were isolated from IKK2-/- embryos showed a marked reduction in tumor necrosis factor-alpha (TNF-alpha)- and interleukin-1alpha-induced NF-kappaB activity and an enhanced apoptosis in response to TNF-alpha. IKK1 associated with NF-kappaB essential modulator (IKKgamma/IKKAP1), another component of the IKK complex. These results show that IKK2 is essential for mouse development and cannot be substituted with IKK1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Q -- Van Antwerp, D -- Mercurio, F -- Lee, K F -- Verma, I M -- New York, N.Y. -- Science. 1999 Apr 9;284(5412):321-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Salk Institute, La Jolla, CA 92037, USA. Signal Pharmaceuticals, San Diego, CA 92121, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10195897" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Cell Line ; DNA-Binding Proteins/metabolism ; Embryonic and Fetal Development ; Gene Targeting ; I-kappa B Kinase ; I-kappa B Proteins ; Interleukin-1/pharmacology ; Liver/cytology/*embryology ; Mice ; NF-kappa B/metabolism ; Phosphorylation ; Polymerase Chain Reaction ; Protein-Serine-Threonine Kinases/genetics/*metabolism ; Receptors, Tumor Necrosis Factor/genetics/metabolism ; Recombinant Fusion Proteins/metabolism ; Sequence Deletion ; Signal Transduction ; Transcription Factor RelA ; Transcription Factors/metabolism ; Tumor Necrosis Factor-alpha/pharmacology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 200
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-01-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bagla, P -- New York, N.Y. -- Science. 1999 Jan 15;283(5400):309.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9925483" target="_blank"〉PubMed〈/a〉
    Keywords: Bioethics ; *Biotechnology/economics/legislation & jurisprudence ; *Genetics, Medical/economics/legislation & jurisprudence ; *Genome ; Genome, Human ; Genome, Plant ; Humans ; India ; *Molecular Biology/economics/legislation & jurisprudence ; Patents as Topic ; Research Support as Topic
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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