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  • Animals  (12)
  • 2000-2004  (12)
  • 1995-1999
  • 2002  (12)
  • 1
    Publication Date: 2002-04-16
    Description: One of the factors postulated to drive the aging process is the accumulation of DNA damage. Here, we provide strong support for this hypothesis by describing studies of mice with a mutation in XPD, a gene encoding a DNA helicase that functions in both repair and transcription and that is mutated in the human disorder trichothiodystrophy (TTD). TTD mice were found to exhibit many symptoms of premature aging, including osteoporosis and kyphosis, osteosclerosis, early greying, cachexia, infertility, and reduced life-span. TTD mice carrying an additional mutation in XPA, which enhances the DNA repair defect, showed a greatly accelerated aging phenotype, which correlated with an increased cellular sensitivity to oxidative DNA damage. We hypothesize that aging in TTD mice is caused by unrepaired DNA damage that compromises transcription, leading to functional inactivation of critical genes and enhanced apoptosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉de Boer, Jan -- Andressoo, Jaan Olle -- de Wit, Jan -- Huijmans, Jan -- Beems, Rudolph B -- van Steeg, Harry -- Weeda, Geert -- van der Horst, Gijsbertus T J -- van Leeuwen, Wibeke -- Themmen, Axel P N -- Meradji, Morteza -- Hoeijmakers, Jan H J -- AG 17242-02/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2002 May 17;296(5571):1276-9. Epub 2002 Apr 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Genetics Center, Department of Cell Biology and Genetics, Center for Biomedical Genetics, Erasmus University, 3000 DR Rotterdam, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11950998" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Aging, Premature/*etiology ; Animals ; Apoptosis ; Bone Density ; Cachexia/etiology ; Crosses, Genetic ; *DNA Damage ; DNA Helicases/genetics/*physiology ; *DNA Repair ; DNA-Binding Proteins/genetics/physiology ; Female ; Fertility ; Gene Targeting ; Growth Disorders/etiology/genetics ; Hair Diseases/genetics ; Kyphosis/etiology/genetics/pathology ; Male ; Mice ; Mutation ; Oxidative Stress ; Phenotype ; Point Mutation ; Proteins/genetics/*physiology ; RNA-Binding Proteins/genetics/physiology ; *Transcription Factors ; Transcription, Genetic ; Xeroderma Pigmentosum Group A Protein ; Xeroderma Pigmentosum Group D Protein
    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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  • 2
    Publication Date: 2002-01-05
    Description: The recently released human genome sequences provide us with reference data to conduct comparative genomic research on primates, which will be important to understand what genetic information makes us human. Here we present a first-generation human-chimpanzee comparative genome map and its initial analysis. The map was constructed through paired alignment of 77,461 chimpanzee bacterial artificial chromosome end sequences with publicly available human genome sequences. We detected candidate positions, including two clusters on human chromosome 21 that suggest large, nonrandom regions of difference between the two genomes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fujiyama, Asao -- Watanabe, Hidemi -- Toyoda, Atsushi -- Taylor, Todd D -- Itoh, Takehiko -- Tsai, Shih-Feng -- Park, Hong-Seog -- Yaspo, Marie-Laure -- Lehrach, Hans -- Chen, Zhu -- Fu, Gang -- Saitou, Naruya -- Osoegawa, Kazutoyo -- de Jong, Pieter J -- Suto, Yumiko -- Hattori, Masahira -- Sakaki, Yoshiyuki -- New York, N.Y. -- Science. 2002 Jan 4;295(5552):131-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉RIKEN Genomic Sciences Center, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan. afujiyam@gsc.riken.go.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11778049" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chromosomes, Artificial, Bacterial ; Chromosomes, Human, Pair 21/genetics ; Cloning, Molecular ; Contig Mapping ; Female ; Gene Library ; *Genome ; *Genome, Human ; Humans ; Male ; Pan troglodytes/*genetics ; *Physical Chromosome Mapping ; Sequence Alignment ; Sequence Analysis, DNA ; Sequence Tagged Sites ; X Chromosome/genetics ; Y Chromosome/genetics
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2002-07-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jensen, Trine -- van de Bildt, Marco -- Dietz, Hans Henrik -- Andersen, Ths Holmen -- Hammer, Anne Sofie -- Kuiken, Thijs -- Osterhaus, Albert -- New York, N.Y. -- Science. 2002 Jul 12;297(5579):209.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Seal Rehabilitation and Research Center, Hoofdstraat 94A, NL-9968 AG Pieterburen, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12114617" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Viral/blood ; Denmark/epidemiology ; Disease Outbreaks/*veterinary ; Distemper/*epidemiology/immunology/virology ; *Distemper Virus, Phocine/classification/genetics/immunology/isolation & ; purification ; Europe/epidemiology ; Netherlands/epidemiology ; Phylogeny ; Reverse Transcriptase Polymerase Chain Reaction ; *Seals, Earless/immunology/virology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2002-05-23
    Description: Between 6 and 10 months of age, the infant's ability to discriminate among native speech sounds improves, whereas the same ability to discriminate among foreign speech sounds decreases. Our study aimed to determine whether this perceptual narrowing is unique to language or might also apply to face processing. We tested discrimination of human and monkey faces by 6-month-olds, 9-month-olds, and adults, using the visual paired-comparison procedure. Only the youngest group showed discrimination between individuals of both species; older infants and adults only showed evidence of discrimination of their own species. These results suggest that the "perceptual narrowing" phenomenon may represent a more general change in neural networks involved in early cognition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pascalis, Olivier -- de Haan, Michelle -- Nelson, Charles A -- New York, N.Y. -- Science. 2002 May 17;296(5571):1321-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychology, The University of Sheffield, Sheffield S10 2TP, UK. o.pascalis@sheffield.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12016317" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; *Aging ; Animals ; Evoked Potentials ; *Face ; Female ; Humans ; Infant ; Macaca fascicularis ; Male ; *Pattern Recognition, Visual ; *Recognition (Psychology) ; Species Specificity ; Speech Perception
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2002-12-14
    Description: The first chordates appear in the fossil record at the time of the Cambrian explosion, nearly 550 million years ago. The modern ascidian tadpole represents a plausible approximation to these ancestral chordates. To illuminate the origins of chordate and vertebrates, we generated a draft of the protein-coding portion of the genome of the most studied ascidian, Ciona intestinalis. The Ciona genome contains approximately 16,000 protein-coding genes, similar to the number in other invertebrates, but only half that found in vertebrates. Vertebrate gene families are typically found in simplified form in Ciona, suggesting that ascidians contain the basic ancestral complement of genes involved in cell signaling and development. The ascidian genome has also acquired a number of lineage-specific innovations, including a group of genes engaged in cellulose metabolism that are related to those in bacteria and fungi.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dehal, Paramvir -- Satou, Yutaka -- Campbell, Robert K -- Chapman, Jarrod -- Degnan, Bernard -- De Tomaso, Anthony -- Davidson, Brad -- Di Gregorio, Anna -- Gelpke, Maarten -- Goodstein, David M -- Harafuji, Naoe -- Hastings, Kenneth E M -- Ho, Isaac -- Hotta, Kohji -- Huang, Wayne -- Kawashima, Takeshi -- Lemaire, Patrick -- Martinez, Diego -- Meinertzhagen, Ian A -- Necula, Simona -- Nonaka, Masaru -- Putnam, Nik -- Rash, Sam -- Saiga, Hidetoshi -- Satake, Masanobu -- Terry, Astrid -- Yamada, Lixy -- Wang, Hong-Gang -- Awazu, Satoko -- Azumi, Kaoru -- Boore, Jeffrey -- Branno, Margherita -- Chin-Bow, Stephen -- DeSantis, Rosaria -- Doyle, Sharon -- Francino, Pilar -- Keys, David N -- Haga, Shinobu -- Hayashi, Hiroko -- Hino, Kyosuke -- Imai, Kaoru S -- Inaba, Kazuo -- Kano, Shungo -- Kobayashi, Kenji -- Kobayashi, Mari -- Lee, Byung-In -- Makabe, Kazuhiro W -- Manohar, Chitra -- Matassi, Giorgio -- Medina, Monica -- Mochizuki, Yasuaki -- Mount, Steve -- Morishita, Tomomi -- Miura, Sachiko -- Nakayama, Akie -- Nishizaka, Satoko -- Nomoto, Hisayo -- Ohta, Fumiko -- Oishi, Kazuko -- Rigoutsos, Isidore -- Sano, Masako -- Sasaki, Akane -- Sasakura, Yasunori -- Shoguchi, Eiichi -- Shin-i, Tadasu -- Spagnuolo, Antoinetta -- Stainier, Didier -- Suzuki, Miho M -- Tassy, Olivier -- Takatori, Naohito -- Tokuoka, Miki -- Yagi, Kasumi -- Yoshizaki, Fumiko -- Wada, Shuichi -- Zhang, Cindy -- Hyatt, P Douglas -- Larimer, Frank -- Detter, Chris -- Doggett, Norman -- Glavina, Tijana -- Hawkins, Trevor -- Richardson, Paul -- Lucas, Susan -- Kohara, Yuji -- Levine, Michael -- Satoh, Nori -- Rokhsar, Daniel S -- HD-37105/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2002 Dec 13;298(5601):2157-67.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉U.S. Department of Energy Joint Genome Institute, 2800 Mitchell Drive, Walnut Creek, CA 94598, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12481130" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Apoptosis ; Base Sequence ; Cellulose/metabolism ; Central Nervous System/physiology ; Ciona intestinalis/anatomy & histology/classification/*genetics/physiology ; Computational Biology ; Endocrine System/physiology ; Gene Dosage ; Gene Duplication ; Genes ; Genes, Homeobox ; *Genome ; Heart/embryology/physiology ; Immunity/genetics ; Molecular Sequence Data ; Multigene Family ; Muscle Proteins/genetics ; Organizers, Embryonic/physiology ; Phylogeny ; Polymorphism, Genetic ; Proteins/genetics/physiology ; *Sequence Analysis, DNA ; Sequence Homology, Nucleic Acid ; Species Specificity ; Thyroid Gland/physiology ; Urochordata/genetics ; Vertebrates/anatomy & histology/classification/genetics/physiology
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  • 6
    Publication Date: 2002-02-23
    Description: The identification of pathways mediated by the kinase Cdk5 and the ligand reelin has provided a conceptual framework for exploring the molecular mechanisms underlying proper lamination of the developing mammalian cerebral cortex. In this report, we identify a component of the regulation of Cdk5-mediated cortical lamination by genetic analysis of the roles of the class III POU domain transcription factors, Brn-1 and Brn-2, expressed during the development of the forebrain and coexpressed in most layer II-V cortical neurons. Brn-1 and Brn-2 appear to critically control the initiation of radial migration, redundantly regulating the cell-autonomous expression of the p35 and p39 regulatory subunits of Cdk5 in migrating cortical neurons, with Brn-1(-/-)/Brn-2(-/-) mice exhibiting cortical inversion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McEvilly, Robert J -- de Diaz, Marcela Ortiz -- Schonemann, Marcus D -- Hooshmand, Farideh -- Rosenfeld, Michael G -- New York, N.Y. -- Science. 2002 Feb 22;295(5559):1528-32.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department and School of Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92037-0648, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11859196" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/cytology/embryology/metabolism ; Cell Adhesion Molecules, Neuronal/genetics/metabolism ; Cell Line ; Cell Movement ; Cerebral Cortex/cytology/embryology/*metabolism ; Cyclin-Dependent Kinase 5 ; Cyclin-Dependent Kinases/metabolism ; Extracellular Matrix Proteins/genetics/metabolism ; Female ; Gene Targeting ; Hippocampus/cytology/embryology/metabolism ; Homeodomain Proteins ; In Situ Hybridization ; Male ; Mice ; Mutation ; Nerve Tissue Proteins/genetics/metabolism ; Neurons/*physiology ; Neuropeptides/genetics/*physiology ; POU Domain Factors ; Serine Endopeptidases ; Trans-Activators/genetics/*physiology ; Transcription Factors/genetics/*physiology ; *Transcription, Genetic
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  • 7
    Publication Date: 2002-08-17
    Description: In striated muscle, the plasma membrane forms tubular invaginations (transverse tubules or T-tubules) that function in depolarization-contraction coupling. Caveolin-3 and amphiphysin were implicated in their biogenesis. Amphiphysin isoforms have a putative role in membrane deformation at endocytic sites. An isoform of amphiphysin 2 concentrated at T-tubules induced tubular plasma membrane invaginations when expressed in nonmuscle cells. This property required exon 10, a phosphoinositide-binding module. In developing myotubes, amphiphysin 2 and caveolin-3 segregated in tubular and vesicular portions of the T-tubule system, respectively. These findings support a role of the bilayer-deforming properties of amphiphysin at T-tubules and, more generally, a physiological role of amphiphysin in membrane deformation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Eunkyung -- Marcucci, Melissa -- Daniell, Laurie -- Pypaert, Marc -- Weisz, Ora A -- Ochoa, Gian-Carlo -- Farsad, Khashayar -- Wenk, Markus R -- De Camilli, Pietro -- CA46128/CA/NCI NIH HHS/ -- NS36251/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2002 Aug 16;297(5584):1193-6.〈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/12183633" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CHO Cells ; Caveolin 3 ; Caveolins/metabolism ; Cell Differentiation ; Cell Line ; Cell Membrane/metabolism ; Cell Membrane Structures/metabolism/*ultrastructure ; Cricetinae ; Dynamins ; Exons ; GTP Phosphohydrolases/metabolism ; Liposomes/metabolism ; Mice ; Microscopy, Electron ; Morphogenesis ; *Muscle Development ; Muscle, Skeletal/metabolism/*ultrastructure ; Nerve Tissue Proteins/chemistry/genetics/*metabolism ; Phosphatidylinositol 4,5-Diphosphate/metabolism ; Protein Isoforms ; Protein Structure, Tertiary ; RNA, Small Interfering ; RNA, Untranslated/metabolism ; Recombinant Fusion Proteins/metabolism ; Transfection
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  • 8
    Publication Date: 2002-07-06
    Description: Another hominid skull has been recovered at Dmanisi (Republic of Georgia) from the same strata in which hominid remains have been reported previously. The Dmanisi site dated to approximately 1.75 million years ago has now produced craniofacial portions of several hominid individuals, along with many well-preserved animal fossils and quantities of stone artifacts. Although there are certain anatomical differences among the Dmanisi specimens, the hominids do not clearly represent more than one taxon. We assign the new skull provisionally to Homo erectus (=ergaster). The Dmanisi specimens are the most primitive and small-brained fossils to be grouped with this species or any taxon linked unequivocally with genus Homo and also the ones most similar to the presumed habilis-like stem. We suggest that the ancestors of the Dmanisi population dispersed from Africa before the emergence of humans identified broadly with the H. erectus grade.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vekua, Abesalom -- Lordkipanidze, David -- Rightmire, G Philip -- Agusti, Jordi -- Ferring, Reid -- Maisuradze, Givi -- Mouskhelishvili, Alexander -- Nioradze, Medea -- De Leon, Marcia Ponce -- Tappen, Martha -- Tvalchrelidze, Merab -- Zollikofer, Christoph -- New York, N.Y. -- Science. 2002 Jul 5;297(5578):85-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Georgian State Museum, Georgian Academy of Sciences, 3 Purtseladze Street, Tbilisi 380007, Georgia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12098694" target="_blank"〉PubMed〈/a〉
    Keywords: Africa ; Animals ; Anthropology, Physical ; Brain/anatomy & histology ; Cephalometry ; Emigration and Immigration ; *Fossils ; Frontal Bone/anatomy & histology ; Geologic Sediments ; Georgia (Republic) ; *Hominidae/anatomy & histology/classification ; Humans ; Mandible/anatomy & histology ; Nasal Bone/anatomy & histology ; Orbit/anatomy & histology ; Parietal Bone/anatomy & histology ; Rodentia ; Skull/*anatomy & histology ; Temporal Bone/anatomy & histology ; Tooth
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  • 9
    Publication Date: 2002-03-16
    Description: An outbreak of paralytic poliomyelitis occurred in the Dominican Republic (13 confirmed cases) and Haiti (8 confirmed cases, including 2 fatal cases) during 2000-2001. All but one of the patients were either unvaccinated or incompletely vaccinated children, and cases occurred in communities with very low (7 to 40%) rates of coverage with oral poliovirus vaccine (OPV). The outbreak was associated with the circulation of a derivative of the type 1 OPV strain, probably originating from a single OPV dose given in 1998-1999. The vaccine-derived poliovirus associated with the outbreak had biological properties indistinguishable from those of wild poliovirus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kew, Olen -- Morris-Glasgow, Victoria -- Landaverde, Mauricio -- Burns, Cara -- Shaw, Jing -- Garib, Zacarias -- Andre, Jean -- Blackman, Elizabeth -- Freeman, C Jason -- Jorba, Jaume -- Sutter, Roland -- Tambini, Gina -- Venczel, Linda -- Pedreira, Cristina -- Laender, Fernando -- Shimizu, Hiroyuki -- Yoneyama, Tetsuo -- Miyamura, Tatsuo -- van Der Avoort, Harrie -- Oberste, M Steven -- Kilpatrick, David -- Cochi, Stephen -- Pallansch, Mark -- de Quadros, Ciro -- New York, N.Y. -- Science. 2002 Apr 12;296(5566):356-9. Epub 2002 Mar 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Viral and Rickettsial Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention (CDC), 1600 Clifton Road, Atlanta, GA 30333, USA. okew@cdc.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11896235" target="_blank"〉PubMed〈/a〉
    Keywords: 5' Untranslated Regions ; Adolescent ; Animals ; Capsid/genetics ; Capsid Proteins ; Child ; Child, Preschool ; *Disease Outbreaks ; Dominican Republic/epidemiology ; Female ; Genes, Viral ; Haiti/epidemiology ; Humans ; Immunization Programs ; Infant ; Male ; Mice ; Molecular Sequence Data ; Point Mutation ; Poliomyelitis/*epidemiology/prevention & control/transmission/*virology ; Poliovirus/classification/*genetics/isolation & purification/*pathogenicity ; Poliovirus Vaccine, Oral/*adverse effects ; Population Surveillance ; Recombination, Genetic ; Vaccination ; Virulence
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  • 10
    Publication Date: 2002-05-11
    Description: Increasing evidence that the strengths of interactions among populations in biological communities form patterns that are crucial for system stability requires clarification of the precise form of these patterns, how they come about, and why they influence stability. We show that in real food webs, interaction strengths are organized in trophic loops in such a way that long loops contain relatively many weak links. We show and explain mathematically that this patterning enhances stability, because it reduces maximum "loop weight" and thus reduces the amount of intraspecific interaction needed for matrix stability. The patterns are brought about by biomass pyramids, a feature common to most ecosystems. Incorporation of biomass pyramids in 104 food-web descriptions reveals that the low weight of the long loops stabilizes complex food webs. Loop-weight analysis could be a useful tool for exploring the structure and organization of complex communities.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Neutel, Anje-Margriet -- Heesterbeek, Johan A P -- De Ruiter, Peter C -- New York, N.Y. -- Science. 2002 May 10;296(5570):1120-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Environmental Sciences, Utrecht University, Post Office Box 80115, 3508 TC Utrecht, Netherlands. a.neutel@geog.uu.nl〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12004131" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biomass ; *Ecosystem ; Feeding Behavior ; *Food Chain ; Mathematics ; *Models, Biological ; Plants ; Predatory Behavior ; *Soil
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