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  • Humans  (543)
  • Male  (123)
  • Phosphorylation  (64)
  • American Association for the Advancement of Science (AAAS)  (638)
  • Springer  (2)
  • 1995-1999  (640)
  • 1999  (640)
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Verlag/Herausgeber
  • American Association for the Advancement of Science (AAAS)  (638)
  • Springer  (2)
Erscheinungszeitraum
  • 1995-1999  (640)
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    Tissue-specific requirements for a phosphorylation site in the Fushi tarazu homeodomain (1999)
    Springer
    Development genes and evolution 209 (1999), S. 427-431 
    Details
    ISSN: 1432-041X
    Schlagwort(e): Key words Drosophila ; Fushi tarazu ; Homeodomain ; Phosphorylation ; Neurogenesis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract  The homeodomain protein Fushi tarazu (Ftz) is required for several embryonic patterning processes including segmentation and neurogenesis. During the stages that these processes are regulated the protein is differentially phosphorylated, suggesting that phosphorylation plays a role in helping the protein to regulate different functions in different tissues. We showed in a recent study that one of the Ftz phosphorylation sites, a protein kinase A-type site in the N-terminal arm of the homeodomain, is required for normal Ftz-dependent segmentation. Here we test whether phosphorylation of this site (Thr-263) is also required in the developing central nervous system (CNS). A well-established role for Ftz in the CNS is for the differentiation of neurons referred to as RP2 neurons. Absence of Ftz expression in these cells causes a failure of certain target genes to be expressed and subsequent defects in RP2 differentiation. In contrast to its effect on segmentation, we find that mutation of Thr-263 to Ala (or Asp) has no effect on these CNS functions. This suggests that the phosphorylation state of this site is irrelevant for Ftz function in the CNS, and that there are tissue-specific differences in the requirements for Ftz phosphorylation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s004270050273
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  • 2
    Digitale Medien
    Digitale Medien
    Analysis of potential phosphorylation sites in human T cell leukemia virus type 1 Tax (1999)
    Springer
    Journal of biomedical science 6 (1999), S. 206-212 
    Details
    ISSN: 1423-0127
    Schlagwort(e): Tax ; HTLV-1 ; Trans-activation ; Phosphorylation ; Mutagenesis ; Transcription ; Genetics
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract The human T cell leukemia virus type 1 (HTLV-1) Tax is a phosphoprotein, however, the contribution of phosphorylation to Tax activity is unknown. Previous studies have shown that phosphorylation of Tax occurs on serine residue(s), within one tryptic fragment, in response to 4β-phorbol-12β-myristate-13α-acetate, in both mouse and human cells. Studies were conducted in multiple cell lines to identify the specific phosphorylated serines as a prelude to functional analysis. The phosphorylation pattern of Tax was found to be different in 293T and COS-7 cells in comparison with MT-4 and Px-1 cells. However, one tryptic fragment remained consistent in comigration analyses among all cell lines. Using selected Tax serine mutants a tryptic fragment containing a serine at residue 113 believed to be the site of phosphorylation of Tax did not comigrate with the common phosphorylated tryptic fragment. Analysis of selected Tax mutants for ability totrans-activate the cytomegalovirus promoter demonstrated mutation of serine 77 to alanine reducedtrans-activation by 90% compared to wild-type Tax. However, examination of the phosphorylation pattern of the serine 77 mutant demonstrated that it is not the site of phosphorylation. These studies demonstrate the importance of using relevant cell lines to characterize the role of phosphorylation in protein function.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02255904
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  • 3
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    Lead regulation (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-01-05
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldman, L R -- New York, N.Y. -- Science. 1998 Dec 4;282(5395):1825-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9874633" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Child ; Environmental Exposure ; Environmental Pollutants/adverse effects ; Government Agencies ; Humans ; Lead/adverse effects ; Lead Poisoning/*prevention & control ; United States ; United States Environmental Protection Agency
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 4
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    A welcome mat for leprosy and Lassa fever (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-01-05
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spear, P G -- New York, N.Y. -- Science. 1998 Dec 11;282(5396):1999-2000.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Northwestern University Medical School, Department of Microbiology-Immunology, Chicago, IL 60611, USA. p-spear@nwu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9874652" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bacterial Adhesion ; Cytoskeletal Proteins/genetics/*metabolism ; Dystroglycans ; Humans ; Laminin/metabolism ; Lassa Fever/*virology ; Lassa virus/*metabolism ; Leprosy/*microbiology ; Lymphocytic choriomeningitis virus/metabolism ; Membrane Glycoproteins/genetics/*metabolism ; Models, Biological ; Mycobacterium leprae/*metabolism ; Receptors, Virus/metabolism ; Schwann Cells/microbiology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 5
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    Freedom of information requests (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-01-05
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gough, M -- New York, N.Y. -- Science. 1998 Dec 4;282(5395):1823.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9874631" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): 2,4,5-Trichlorophenoxyacetic Acid/adverse effects ; 2,4-Dichlorophenoxyacetic Acid/adverse effects ; Confidentiality/*legislation & jurisprudence ; Defoliants, Chemical ; Financing, Government ; Humans ; *Public Policy ; Research/*legislation & jurisprudence ; *Research Support as Topic ; Tetrachlorodibenzodioxin/adverse effects ; United States
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 6
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    The handy-dandy kitchen device (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-01-05
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abramson, P R -- Pinkerton, S D -- New York, N.Y. -- Science. 1998 Dec 11;282(5396):1993-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9874650" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Anura/*genetics/physiology ; *Biological Evolution ; Male ; Selection, Genetic ; *Sexual Behavior, Animal ; *Vocalization, Animal
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 7
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    Biological hydrogen production: not so elementary (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-01-05
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adams, M W -- Stiefel, E I -- New York, N.Y. -- Science. 1998 Dec 4;282(5395):1842-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA 30602, USA. adams@bmb.uga.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9874636" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Binding Sites ; Carbon Monoxide/chemistry ; Clostridium/*enzymology ; Crystallography, X-Ray ; Cyanides/chemistry ; Humans ; Hydrogen/*metabolism ; Hydrogenase/*chemistry/*metabolism ; Iron/chemistry ; Ligands ; Oxidation-Reduction ; Pyruvic Acid/metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 8
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    Worming secrets from the C. elegans genome (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-01-05
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 1998 Dec 11;282(5396):1972-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9874643" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Caenorhabditis elegans/cytology/*genetics/physiology ; Cell Lineage ; Chromosome Mapping ; DNA, Helminth/chemistry/genetics ; Evolution, Molecular ; Gene Expression Regulation ; *Genes, Helminth ; Genetic Techniques ; *Genome ; Humans ; Mutation ; *Sequence Analysis, DNA
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 9
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    Heat shock protein mutes genetic changes (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-01-05
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 1998 Dec 4;282(5395):1796.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9874626" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Crosses, Genetic ; Drosophila/*genetics ; Female ; *Genes, Insect ; HSP90 Heat-Shock Proteins/genetics/*physiology ; Insect Proteins/genetics/physiology ; Male ; *Mutation ; Temperature
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 10
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    How chromatin changes its shape (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-09-15
    Beschreibung: 〈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〉
    Schlagwort(e): 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
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 11
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    Postdoctoral patterns, career advancement, and problems (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-09-08
    Beschreibung: 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〉
    Schlagwort(e): *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
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 12
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    Beefed-up NIH center probes unconventional therapies (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-01-16
    Beschreibung: 〈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〉
    Schlagwort(e): 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
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 13
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    The man who would spin genes into gold (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-09-04
    Beschreibung: 〈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〉
    Schlagwort(e): Biotechnology/history ; Genetics, Medical/history ; Genome, Human ; History, 20th Century ; Humans ; United States
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 14
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    Transplants from pigs (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-12-28
    Beschreibung: 〈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〉
    Schlagwort(e): Animals ; Antibodies, Viral/analysis ; *Gammaretrovirus/immunology ; Humans ; Retroviridae Infections/diagnosis/*transmission ; *Swine/virology ; *Transplantation, Heterologous/adverse effects
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 15
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    Neurons and silicon get intimate (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-05-18
    Beschreibung: 〈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〉
    Schlagwort(e): Animals ; Cells, Cultured ; Electric Stimulation ; Electrodes ; Electrodes, Implanted ; *Electronics ; Electrophysiology ; Humans ; Nerve Net/*physiology ; Nervous System Diseases/*therapy ; Neurons/*physiology ; Rats ; Silicon ; *Transistors, Electronic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 16
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    Genetic disease. Sweden takes steps to protect tissue banks (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-11-30
    Beschreibung: 〈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〉
    Schlagwort(e): *Biological Specimen Banks/legislation & jurisprudence ; Biotechnology ; Ethics Committees ; *Ethics, Research ; *Genetic Privacy ; *Genetic Research ; Government Regulation ; Humans ; *Privacy/legislation & jurisprudence ; Public Policy ; Sweden
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 17
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    Affinity-driven peptide selection of an NFAT inhibitor more selective than cyclosporin A (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-09-25
    Beschreibung: 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〉
    Schlagwort(e): 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
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 18
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    Ethical dilemmas and stem cell research (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-10-16
    Beschreibung: 〈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〉
    Schlagwort(e): 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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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 19
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    Shifting RNA polymerase into overdrive (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-05-18
    Beschreibung: 〈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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 20
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    Human genome. A good SNP may be hard to find (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-07-31
    Beschreibung: 〈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〉
    Schlagwort(e): *Genetic Techniques ; *Genome, Human ; Humans ; *Mutation ; *Polymorphism, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 21
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    Heart failure simulated (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-04-24
    Beschreibung: 〈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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 22
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    New model for hereditary breast cancer (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-05-21
    Beschreibung: 〈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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 23
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    Notch signaling: cell fate control and signal integration in development (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-04-30
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 24
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    Unmasking a cheating gene (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-04-03
    Beschreibung: 〈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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 25
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    Australopithecus garhi: a new species of early hominid from Ethiopia (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-04-24
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 26
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    Requirement of ATM-dependent phosphorylation of brca1 in the DNA damage response to double-strand breaks (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-11-05
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 27
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    Iceland's central database of health records (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-02-13
    Beschreibung: 〈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〉
    Schlagwort(e): Bioethics ; Databases, Factual/*legislation & jurisprudence ; Genetic Privacy ; *Genetic Research ; Humans ; Iceland ; Medical Records Systems, Computerized/*legislation & jurisprudence ; Patient Advocacy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 28
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    Stimulation of microtubule aster formation and spindle assembly by the small GTPase Ran (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-05-21
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 29
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    Posttranslational quality control: folding, refolding, and degrading proteins (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-12-03
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 30
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    Filling in the blanks of the GABAB receptor (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-01-23
    Beschreibung: 〈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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 31
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    Infants learning algebraic rules (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-10-16
    Beschreibung: 〈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〉
    Schlagwort(e): Humans ; Infant ; *Learning ; *Mathematics ; *Neural Networks (Computer)
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 32
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    Requirement of yeast SGS1 and SRS2 genes for replication and transcription (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-12-22
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 33
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    Team wrapping up sequence of first human chromosome (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-10-16
    Beschreibung: 〈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〉
    Schlagwort(e): Chromosome Mapping ; Chromosomes, Human, Pair 22/*genetics ; Contig Mapping ; *Human Genome Project ; Humans ; International Cooperation ; *Sequence Analysis, DNA
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 34
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    Regulation of intestinal alpha-defensin activation by the metalloproteinase matrilysin in innate host defense (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-10-03
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Uncontrolled release of harmful microorganisms (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-06-26
    Beschreibung: 〈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〉
    Schlagwort(e): Bacteria/*genetics/pathogenicity ; *Biotechnology ; *Containment of Biohazards ; Ecosystem ; *Genetic Engineering ; Guidelines as Topic ; Humans ; United States ; Viruses/*genetics/pathogenicity
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    A new human ancestor? (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-05-18
    Beschreibung: 〈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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    The promise of comparative genomics in mammals (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-10-16
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Rapid spine delivery and redistribution of AMPA receptors after synaptic NMDA receptor activation (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-06-12
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 39
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    Population biology, evolution, and infectious disease: convergence and synthesis (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-02-05
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 40
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    GTP binding by class II transactivator: role in nuclear import (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-08-28
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 41
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    Emerging marine diseases--climate links and anthropogenic factors (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-09-25
    Beschreibung: 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〉
    Schlagwort(e): Animals ; Aquaculture ; *Climate ; Cnidaria ; *Disease Outbreaks/*veterinary ; Humans ; Infection/epidemiology/*etiology/transmission/*veterinary ; *Marine Biology ; Oceans and Seas ; Water Pollution
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 42
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    Science and "truth" (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-08-24
    Beschreibung: 〈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〉
    Schlagwort(e): *Biological Evolution ; Humans ; *Religion and Science
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 43
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    Role of nonexercise activity thermogenesis in resistance to fat gain in humans (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-01-08
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 44
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    Epigenetics: regulation through repression (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-10-16
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 45
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    Tissue engineering (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-06-26
    Beschreibung: 〈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〉
    Schlagwort(e): Animals ; *Biomedical Engineering ; *Blood Vessels/physiology/transplantation ; *Culture Techniques ; Dogs ; Endothelium, Vascular ; Graft Survival ; Humans ; Transplantation, Heterologous
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 46
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    Calmodulin dependence of presynaptic metabotropic glutamate receptor signaling (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-11-05
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 47
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    Stability, precision, and near-24-hour period of the human circadian pacemaker (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-06-26
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 48
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    Chlamydia infections and heart disease linked through antigenic mimicry (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-02-26
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 49
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    Defective angiogenesis in mice lacking endoglin (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-05-29
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 50
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    The systematics of Homo (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-07-03
    Beschreibung: 〈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〉
    Schlagwort(e): Animals ; Biological Evolution ; Hominidae/*classification/genetics ; Humans ; Phylogeny
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 51
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    India creates novel brain research center (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-10-26
    Beschreibung: 〈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〉
    Schlagwort(e): *Academies and Institutes/economics ; *Brain ; Humans ; India ; International Cooperation ; *Research
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 52
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    Paracellular channels! (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-07-31
    Beschreibung: 〈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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 53
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    Chinese center sues over study coverage (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-04-17
    Beschreibung: 〈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〉
    Schlagwort(e): 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
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 54
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    Regulation of maternal behavior and offspring growth by paternally expressed Peg3 (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-04-09
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 55
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    The human genus (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-04-02
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 56
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    CD3- and CD28-dependent induction of PDE7 required for T cell activation (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-02-05
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 57
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    Stevenson's fingers (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-11-30
    Beschreibung: 〈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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 58
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    Self-organization of microtubule asters induced in Xenopus egg extracts by GTP-bound Ran (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-05-21
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 59
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    Intracytoplasmic sperm injection (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-10-26
    Beschreibung: 〈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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 60
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    Bioprospecting. Model Indian deal generates payments (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-04-03
    Beschreibung: 〈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〉
    Schlagwort(e): Academies and Institutes ; *Economics, Pharmaceutical ; *Ethnic Groups ; Humans ; India ; Medicine, Ayurvedic ; Plant Extracts/*economics ; *Plants, Medicinal
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 61
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    An activating immunoreceptor complex formed by NKG2D and DAP10 (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-07-31
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Behaviorists listen in as animals call and croak (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-09-25
    Beschreibung: 〈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〉
    Schlagwort(e): *Animal Communication ; Animals ; Anura/*physiology ; Female ; Grasshoppers/*physiology ; Male
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 63
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    Severe liver degeneration in mice lacking the IkappaB kinase 2 gene (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-04-09
    Beschreibung: 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〉
    Schlagwort(e): 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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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 64
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    India prepares research, policy initiatives (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-01-30
    Beschreibung: 〈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〉
    Schlagwort(e): 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
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 65
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    Silver-tongued Neandertals? (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-01-30
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lieberman, P -- New York, N.Y. -- Science. 1999 Jan 8;283(5399):175.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9925475" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Fossils ; Hominidae/*anatomy & histology/physiology ; Humans ; Hyoid Bone/*anatomy & histology ; *Speech ; Tongue/*anatomy & histology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 66
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    Breast implant safety (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-04-03
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, D L -- Garry, R F -- New York, N.Y. -- Science. 1999 Mar 12;283(5408):1644.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10189316" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Breast Implants/*adverse effects ; Female ; Humans ; Silicone Gels/*adverse effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 67
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    The nature of the principal type 1 interferon-producing cells in human blood (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-06-12
    Beschreibung: Interferons (IFNs) are the most important cytokines in antiviral immune responses. "Natural IFN-producing cells" (IPCs) in human blood express CD4 and major histocompatibility complex class II proteins, but have not been isolated and further characterized because of their rarity, rapid apoptosis, and lack of lineage markers. Purified IPCs are here shown to be the CD4(+)CD11c- type 2 dendritic cell precursors (pDC2s), which produce 200 to 1000 times more IFN than other blood cells after microbial challenge. pDC2s are thus an effector cell type of the immune system, critical for antiviral and antitumor immune responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Siegal, F P -- Kadowaki, N -- Shodell, M -- Fitzgerald-Bocarsly, P A -- Shah, K -- Ho, S -- Antonenko, S -- Liu, Y J -- New York, N.Y. -- Science. 1999 Jun 11;284(5421):1835-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Saint Vincents Hospital and Medical Center, New York, NY 10011, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10364556" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): CD40 Ligand ; Cell Lineage ; Cell Separation ; Cells, Cultured ; Dendritic Cells/cytology/*immunology/ultrastructure ; Humans ; Interferon Type I/*biosynthesis ; Interferon-alpha/*biosynthesis/genetics ; Interferon-beta/biosynthesis/genetics ; Interleukin-3/pharmacology ; Leukocytes, Mononuclear/immunology ; Membrane Glycoproteins/pharmacology ; Organelles/ultrastructure ; RNA, Messenger/genetics/metabolism ; Simplexvirus/immunology ; Stem Cells/cytology/immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 68
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    Tuberculosis vaccines (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-12-28
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lietman, T -- Blower, S -- New York, N.Y. -- Science. 1999 Nov 12;286(5443):1300-1; author reply 1301.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10610535" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Antibiotics, Antitubercular/*therapeutic use ; BCG Vaccine/*immunology ; Humans ; Immunization Programs ; Tuberculosis/*drug therapy/*prevention & control
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 69
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    Cell surgery (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-12-28
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sikorski, R -- Peters, R -- New York, N.Y. -- Science. 1999 Nov 19;286(5444):1498.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10610553" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bone Marrow Cells/*cytology ; Cell Differentiation ; Cell Separation ; Dystrophin/biosynthesis ; Female ; *Hematopoietic Stem Cell Transplantation ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Inbred mdx ; Muscle, Skeletal/*cytology/metabolism ; *Stem Cell Transplantation ; Stem Cells/*cytology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Antiangiogenic activity of the cleaved conformation of the serpin antithrombin (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-09-18
    Beschreibung: Antithrombin, a member of the serpin family, functions as an inhibitor of thrombin and other enzymes. Cleavage of the carboxyl-terminal loop of antithrombin induces a conformational change in the molecule. Here it is shown that the cleaved conformation of antithrombin has potent antiangiogenic and antitumor activity in mouse models. The latent form of intact antithrombin, which is similar in conformation to the cleaved molecule, also inhibited angiogenesis and tumor growth. These data provide further evidence that the clotting and fibrinolytic pathways are directly involved in the regulation of angiogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Reilly, M S -- Pirie-Shepherd, S -- Lane, W S -- Folkman, J -- P01-CA45548/CA/NCI NIH HHS/ -- R01-CA64481/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1999 Sep 17;285(5435):1926-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Surgery, Children's Hospital, Departments of Surgery and Cellular Biology, Harvard Microchemistry Facility, 16 Divinity Avenue, Cambridge, MA 02138, USA. oreilly@hub.tch.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10489375" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antineoplastic Agents/chemistry/isolation & purification/metabolism/*pharmacology ; Antithrombins/chemistry/isolation & purification/metabolism/*pharmacology ; Carcinoma, Small Cell/blood supply/drug therapy ; Cell Line ; Culture Media, Conditioned ; Drug Screening Assays, Antitumor ; Humans ; Lung Neoplasms/blood supply/drug therapy ; Mice ; Mice, SCID ; Neoplasm Transplantation ; Neovascularization, Pathologic/*drug therapy ; Peptide Fragments/chemistry/metabolism/pharmacology ; Protein Conformation ; Tumor Cells, Cultured
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Perspectives: cell cycle. The difficulty in separating sisters (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-08-07
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Orr-Weaver, T L -- New York, N.Y. -- Science. 1999 Jul 16;285(5426):344-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute and Massachusetts Institute of Technology, Cambridge, MA 02142, USA. weaver@wi.mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10438298" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Anaphase ; Anaphase-Promoting Complex-Cyclosome ; Animals ; Cell Cycle Proteins/*metabolism ; Cell Transformation, Neoplastic ; Chromatids/*physiology ; Chromosomal Proteins, Non-Histone ; *Endopeptidases ; Fungal Proteins ; Humans ; Ligases/metabolism ; Mitosis ; Neoplasm Proteins/*metabolism ; Nuclear Proteins/metabolism ; Oncogene Proteins/*metabolism ; Phosphoproteins ; Prophase ; Saccharomyces cerevisiae Proteins ; Securin ; Separase ; *Ubiquitin-Protein Ligase Complexes ; Ubiquitin-Protein Ligases ; Yeasts/cytology/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Report casts doubt Korean experiment (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-02-13
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baker, M -- New York, N.Y. -- Science. 1999 Jan 29;283(5402):617, 619.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9988653" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Bioethics ; Cell Division ; *Cloning, Organism/legislation & jurisprudence ; Embryo Research ; *Embryo, Mammalian/cytology ; Ethical Review ; Government Regulation ; Humans ; Korea ; Nuclear Transfer Techniques ; Public Policy
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 73
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    Tolerating differences (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-08-07
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sikorski, R -- Peters, R -- New York, N.Y. -- Science. 1999 Jul 16;285(5426):357-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10438301" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Abatacept ; Antigens, CD ; Antigens, Differentiation/metabolism/*pharmacology ; Bone Marrow Transplantation/*immunology ; CTLA-4 Antigen ; Graft vs Host Disease/immunology/*prevention & control ; Humans ; *Immune Tolerance ; *Immunoconjugates ; Immunosuppressive Agents/metabolism/*pharmacology ; Leukocytes, Mononuclear/immunology ; Lymphocyte Activation ; T-Lymphocytes/*immunology/metabolism ; Transplantation Conditioning
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 74
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    Inhibition of the mitogen-activated protein kinase kinase superfamily by a Yersinia effector (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-09-18
    Beschreibung: The bacterial pathogen Yersinia uses a type III secretion system to inject several virulence factors into target cells. One of the Yersinia virulence factors, YopJ, was shown to bind directly to the superfamily of MAPK (mitogen-activated protein kinase) kinases (MKKs) blocking both phosphorylation and subsequent activation of the MKKs. These results explain the diverse activities of YopJ in inhibiting the extracellular signal-regulated kinase, c-Jun amino-terminal kinase, p38, and nuclear factor kappa B signaling pathways, preventing cytokine synthesis and promoting apoptosis. YopJ-related proteins that are found in a number of bacterial pathogens of animals and plants may function to block MKKs so that host signaling responses can be modulated upon infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Orth, K -- Palmer, L E -- Bao, Z Q -- Stewart, S -- Rudolph, A E -- Bliska, J B -- Dixon, J E -- 18024/PHS HHS/ -- AI35175/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1999 Sep 17;285(5435):1920-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry, University of Michigan, Ann Arbor, MI 48109-0606, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10489373" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Bacterial Proteins/*physiology ; Calcium-Calmodulin-Dependent Protein Kinases/*antagonists & inhibitors ; Cell Line ; Enzyme Activation ; Enzyme Inhibitors/*pharmacology ; HeLa Cells ; Humans ; *MAP Kinase Kinase Kinase 1 ; NF-kappa B/metabolism ; Phosphorylation ; Protein Binding ; Protein-Serine-Threonine Kinases/genetics/metabolism ; Recombinant Fusion Proteins/genetics/metabolism ; Transfection ; Virulence ; Yersinia pseudotuberculosis/genetics/metabolism/pathogenicity/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 75
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    Techsighting. Test tube kidneys (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-07-10
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sikorski, R -- Peters, R -- New York, N.Y. -- Science. 1999 Jun 18;284(5422):1952.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10400538" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Bioreactors ; Cell Culture Techniques ; Dogs ; *Hemofiltration ; Humans ; Kidney Failure, Chronic/metabolism/*therapy ; Kidney Tubules, Proximal/*cytology/*metabolism ; Kidneys, Artificial ; Swine
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Dosage compensation proteins targeted to X chromosomes by a determinant of hermaphrodite fate (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-06-12
    Beschreibung: In many organisms, master control genes coordinately regulate sex-specific aspects of development. SDC-2 was shown to induce hermaphrodite sexual differentiation and activate X chromosome dosage compensation in Caenorhabditis elegans. To control these distinct processes, SDC-2 acts as a strong gene-specific repressor and a weaker chromosome-wide repressor. To initiate hermaphrodite development, SDC-2 associates with the promoter of the male sex-determining gene her-1 to repress its transcription. To activate dosage compensation, SDC-2 triggers assembly of a specialized protein complex exclusively on hermaphrodite X chromosomes to reduce gene expression by half. SDC-2 can localize to X chromosomes without other components of the dosage compensation complex, suggesting that SDC-2 targets dosage compensation machinery to X chromosomes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dawes, H E -- Berlin, D S -- Lapidus, D M -- Nusbaum, C -- Davis, T L -- Meyer, B J -- GM30702/GM/NIGMS NIH HHS/ -- T32 GM07127/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Jun 11;284(5421):1800-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720-3204, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10364546" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Caenorhabditis elegans/embryology/*genetics/physiology ; *Caenorhabditis elegans Proteins ; *DNA-Binding Proteins ; Disorders of Sex Development ; *Dosage Compensation, Genetic ; Female ; Gene Expression Regulation, Developmental ; Genes, Helminth ; Helminth Proteins/genetics/*physiology ; Male ; Molecular Sequence Data ; Mutation ; Promoter Regions, Genetic ; Repressor Proteins/genetics/*physiology ; *Sex Determination Processes ; Transgenes ; X Chromosome/genetics/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 77
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    Human cloning. Korean report sparks anger and inquiry (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-01-23
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baker, M -- New York, N.Y. -- Science. 1999 Jan 1;283(5398):16-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9917255" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Bioethics ; *Cloning, Organism ; Embryo Research ; Female ; Government Regulation ; Humans ; Korea ; Nuclear Transfer Techniques ; Research
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 78
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    A piston model for transmembrane signaling of the aspartate receptor (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-09-11
    Beschreibung: To characterize the mechanism by which receptors propagate conformational changes across membranes, nitroxide spin labels were attached at strategic positions in the bacterial aspartate receptor. By collecting the electron paramagnetic resonance spectra of these labeled receptors in the presence and absence of the ligand aspartate, ligand binding was shown to generate an approximately 1 angstrom intrasubunit piston-type movement of one transmembrane helix downward relative to the other transmembrane helix. The receptor-associated phosphorylation cascade proteins CheA and CheW did not alter the ligand-induced movement. Because the piston movement is very small, the ability of receptors to produce large outcomes in response to stimuli is caused by the ability of the receptor-coupled enzymes to detect small changes in the conformation of the receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ottemann, K M -- Xiao, W -- Shin, Y K -- Koshland, D E Jr -- DK09765/DK/NIDDK NIH HHS/ -- GM51290/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Sep 10;285(5434):1751-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology and Department of Chemistry, University of California, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10481014" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aspartic Acid/*metabolism ; Bacterial Proteins/metabolism ; Cell Membrane/*metabolism ; Chemotaxis ; Dimerization ; Electron Spin Resonance Spectroscopy ; Escherichia coli/metabolism ; *Escherichia coli Proteins ; Fourier Analysis ; Ligands ; Lipid Bilayers ; Membrane Proteins/metabolism ; Methylation ; *Models, Biological ; Mutagenesis ; Phosphorylation ; Protein Conformation ; Protein Kinases/metabolism ; Protein Structure, Secondary ; Receptors, Amino Acid/*chemistry/genetics/*metabolism ; *Signal Transduction ; Spin Labels
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 79
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    Efficient persistence of extrachromosomal KSHV DNA mediated by latency-associated nuclear antigen (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-04-24
    Beschreibung: Primary effusion lymphoma (PEL) cells harbor Kaposi's sarcoma-associated herpesvirus (KSHV) episomes and express a KSHV-encoded latency-associated nuclear antigen (LANA). In PEL cells, LANA and KSHV DNA colocalized in dots in interphase nuclei and along mitotic chromosomes. In the absence of KSHV DNA, LANA was diffusely distributed in the nucleus or on mitotic chromosomes. In lymphoblasts, LANA was necessary and sufficient for the persistence of episomes containing a specific KSHV DNA fragment. Furthermore, LANA colocalized with the artificial KSHV DNA episomes in nuclei and along mitotic chromosomes. These results support a model in which LANA tethers KSHV DNA to chromosomes during mitosis to enable the efficient segregation of KSHV episomes to progeny cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ballestas, M E -- Chatis, P A -- Kaye, K M -- CA67380-04/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1999 Apr 23;284(5414):641-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Channing Laboratory, Brigham and Women's Hospital, Harvard Medical School, 181 Longwood Avenue, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10213686" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Antigens, Viral/analysis/genetics/metabolism ; Cell Nucleus/chemistry ; Chromosomes/chemistry/*metabolism ; Cosmids ; DNA, Viral/analysis/genetics/*metabolism ; Herpesvirus 8, Human/*genetics/physiology ; Humans ; Interphase ; Lymphocytes/chemistry ; Microscopy, Confocal ; *Mitosis ; Nuclear Proteins/analysis/genetics/*metabolism ; *Plasmids ; Transfection ; Tumor Cells, Cultured
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 80
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    Genomic views of human history (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-10-16
    Beschreibung: New tools of genomic analysis shed light on historical puzzles. Migrations of ancient peoples, differences in migration patterns of males and females, historical demography of cultures with ancient roots, and patterns of human genetic diversity are increasingly the focus of integrated analysis by historians, anthropologists, and geneticists.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Owens, K -- King, M C -- New York, N.Y. -- Science. 1999 Oct 15;286(5439):451-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Genetics and Medicine, Box 357720, University of Washington, Seattle, WA 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10521333" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Anthropology ; Biological Evolution ; Continental Population Groups/genetics ; Culture ; Emigration and Immigration ; Ethnic Groups/genetics ; Female ; Genetic Variation ; *Genetics, Population ; *Genome, Human ; History, Ancient ; Humans ; Jews/genetics ; Male
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 81
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    Quality control by DNA repair (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-12-03
    Beschreibung: Faithful maintenance of the genome is crucial to the individual and to species. DNA damage arises from both endogenous sources such as water and oxygen and exogenous sources such as sunlight and tobacco smoke. In human cells, base alterations are generally removed by excision repair pathways that counteract the mutagenic effects of DNA lesions. This serves to maintain the integrity of the genetic information, although not all of the pathways are absolutely error-free. In some cases, DNA damage is not repaired but is instead bypassed by specialized DNA polymerases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lindahl, T -- Wood, R D -- New York, N.Y. -- Science. 1999 Dec 3;286(5446):1897-905.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Imperial Cancer Research Fund, Clare Hall Laboratories, South Mimms, Herts, EN6 3LD, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10583946" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; DNA/*metabolism/radiation effects ; DNA Adducts/metabolism ; *DNA Damage ; DNA Glycosylases ; *DNA Repair ; DNA-Binding Proteins/metabolism ; DNA-Directed DNA Polymerase/metabolism ; Humans ; Mutagens ; N-Glycosyl Hydrolases/chemistry/metabolism ; Neoplasms/genetics/metabolism ; Poly(ADP-ribose) Polymerases/metabolism ; Ultraviolet Rays
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 82
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    Pigment epithelium-derived factor: a potent inhibitor of angiogenesis (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-07-10
    Beschreibung: In the absence of disease, the vasculature of the mammalian eye is quiescent, in part because of the action of angiogenic inhibitors that prevent vessels from invading the cornea and vitreous. Here, an inhibitor responsible for the avascularity of these ocular compartments is identified as pigment epithelium-derived factor (PEDF), a protein previously shown to have neurotrophic activity. The amount of inhibitory PEDF produced by retinal cells was positively correlated with oxygen concentrations, suggesting that its loss plays a permissive role in ischemia-driven retinal neovascularization. These results suggest that PEDF may be of therapeutic use, especially in retinopathies where pathological neovascularization compromises vision and leads to blindness.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dawson, D W -- Volpert, O V -- Gillis, P -- Crawford, S E -- Xu, H -- Benedict, W -- Bouck, N P -- New York, N.Y. -- Science. 1999 Jul 9;285(5425):245-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology-Immunology, Department of Pathology, Robert H. Lurie Comprehensive Cancer Center, Northwestern University Medical School, Chicago, IL 60611, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10398599" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn ; Antibodies/immunology ; Cattle ; Cells, Cultured ; Chemotaxis/drug effects ; Culture Media, Conditioned ; Endothelial Growth Factors/metabolism ; Endothelium, Vascular/cytology/drug effects/physiology ; Eye/blood supply ; *Eye Proteins ; Humans ; Lymphokines/metabolism ; Mice ; Neovascularization, Pathologic/*drug therapy/metabolism/pathology ; Neovascularization, Physiologic/*drug effects ; *Nerve Growth Factors ; Oxygen/physiology ; Proteins/genetics/immunology/*pharmacology/*physiology ; RNA, Messenger/genetics/metabolism ; Rats ; Retina/*metabolism/pathology ; Retinal Neovascularization/*drug therapy ; Retinal Vessels/growth & development ; Serpins/genetics/immunology/*pharmacology/*physiology ; Tumor Cells, Cultured ; Vascular Endothelial Growth Factor A ; Vascular Endothelial Growth Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 83
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    Fetal cells help Parkinson's patients (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-11-30
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Helmuth, L -- New York, N.Y. -- Science. 1999 Oct 29;286(5441):886-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10577234" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Brain Tissue Transplantation ; Controlled Clinical Trials as Topic ; Dopamine/metabolism ; Double-Blind Method ; *Fetal Tissue Transplantation ; Humans ; Parkinson Disease/*therapy ; Putamen/cytology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 84
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    Beating the odds with Big K (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-10-09
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Silberberg, S D -- Magleby, K L -- New York, N.Y. -- Science. 1999 Sep 17;285(5435):1859-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Life Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel. silber@bgumail.bgu.ac.il〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10515790" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Blood Pressure/drug effects/*physiology ; Estradiol/*metabolism/pharmacology ; Female ; Humans ; Large-Conductance Calcium-Activated Potassium Channels ; Longevity/physiology ; Male ; Muscle Contraction ; Muscle, Smooth, Vascular/drug effects/metabolism ; Potassium Channels/*metabolism ; *Potassium Channels, Calcium-Activated ; Recombinant Proteins/metabolism ; Sex Characteristics ; Xenopus
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 85
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    Can immune systems be trained to fight HIV? (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-12-28
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balter, M -- New York, N.Y. -- Science. 1999 Nov 19;286(5444):1470-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10610544" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): AIDS Vaccines/*immunology/therapeutic use ; Anti-HIV Agents/therapeutic use ; Controlled Clinical Trials as Topic ; HIV/*immunology/physiology ; HIV Infections/drug therapy/*immunology/*therapy/virology ; Humans ; T-Lymphocytes, Cytotoxic/*immunology ; T-Lymphocytes, Helper-Inducer/*immunology ; Viral Load
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 86
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    New role found for the hippocampus (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-09-18
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Helmuth, L -- New York, N.Y. -- Science. 1999 Aug 27;285(5432):1339, 1341.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10490405" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amnesia, Retrograde/physiopathology/psychology ; Awareness ; Hippocampus/*physiology ; Humans ; *Memory ; Unconscious (Psychology)
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 87
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    The machinery of mitochondrial inheritance and behavior (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-03-05
    Beschreibung: The distribution of mitochondria to daughter cells during cell division is an essential feature of cell proliferation. Until recently, it was commonly believed that inheritance of mitochondria and other organelles was a passive process, a consequence of their random diffusion throughout the cytoplasm. A growing recognition of the reticular morphology of mitochondria in many living cells, the association of mitochondria with the cytoskeleton, and the coordinated movements of mitochondria during cellular division and differentiation has illuminated the necessity for a cellular machinery that mediates mitochondrial behavior. Characterization of the underlying molecular components of this machinery is providing insight into mechanisms regulating mitochondrial morphology and distribution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yaffe, M P -- GM44614/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Mar 5;283(5407):1493-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of California, San Diego, La Jolla, CA 92093-0347, USA. myaffe@ucsd.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10066164" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Cell Division ; Cytoskeletal Proteins/genetics/physiology ; Cytoskeleton/physiology ; Dynamins ; GTP Phosphohydrolases/physiology ; Genes ; Humans ; Mitochondria/*genetics/*physiology/ultrastructure ; Movement ; Mutation ; Saccharomyces cerevisiae/genetics/physiology/ultrastructure
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 88
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    Gene sequencing. Size matters (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-01-30
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sikorski, R -- Peters, R -- New York, N.Y. -- Science. 1999 Jan 15;283(5400):349.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9925497" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Pairing ; *Genes, APC ; Humans ; Mass Spectrometry ; Oligodeoxyribonucleotides/*chemistry ; Sequence Analysis, DNA/*methods
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 89
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    Climate and satellite indicators to forecast Rift Valley fever epidemics in Kenya (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-07-20
    Beschreibung: All known Rift Valley fever virus outbreaks in East Africa from 1950 to May 1998, and probably earlier, followed periods of abnormally high rainfall. Analysis of this record and Pacific and Indian Ocean sea surface temperature anomalies, coupled with satellite normalized difference vegetation index data, shows that prediction of Rift Valley fever outbreaks may be made up to 5 months in advance of outbreaks in East Africa. Concurrent near-real-time monitoring with satellite normalized difference vegetation data may identify actual affected areas.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Linthicum, K J -- Anyamba, A -- Tucker, C J -- Kelley, P W -- Myers, M F -- Peters, C J -- New York, N.Y. -- Science. 1999 Jul 16;285(5426):397-400.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Defense, Global Emerging Infections System, Division of Preventive Medicine, Walter Reed Army Institute of Research, Washington, DC 20307-5100, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10411500" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Climate ; *Disease Outbreaks ; *Forecasting ; Humans ; Kenya/epidemiology ; Oceans and Seas ; Pacific Ocean ; Rain ; Rift Valley Fever/*epidemiology/prevention & control/veterinary ; Temperature ; *Weather
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 90
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    A molecular pathway revealing a genetic basis for human cardiac and craniofacial defects (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-02-19
    Beschreibung: Microdeletions of chromosome 22q11 are the most common genetic defects associated with cardiac and craniofacial anomalies in humans. A screen for mouse genes dependent on dHAND, a transcription factor implicated in neural crest development, identified Ufd1, which maps to human 22q11 and encodes a protein involved in degradation of ubiquitinated proteins. Mouse Ufd1 was specifically expressed in most tissues affected in patients with 22q11 deletion syndrome. The human UFD1L gene was deleted in all 182 patients studied with 22q11 deletion, and a smaller deletion of approximately 20 kilobases that removed exons 1 to 3 of UFD1L was found in one individual with features typical of 22q11 deletion syndrome. These data suggest that UFD1L haploinsufficiency contributes to the congenital heart and craniofacial defects seen in 22q11 deletion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yamagishi, H -- Garg, V -- Matsuoka, R -- Thomas, T -- Srivastava, D -- R01HL57181-01/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1999 Feb 19;283(5405):1158-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, Division of Cardiology, University of Texas Southwestern Medical Center, 6000 Harry Hines Boulevard, Room NA8.124, Dallas, TX 75235-9148, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10024240" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Aorta, Thoracic/abnormalities/embryology/metabolism ; Basic Helix-Loop-Helix Transcription Factors ; Cell Cycle Proteins/genetics ; Chromosomes, Human, Pair 22/*genetics ; Craniofacial Abnormalities/*genetics ; DNA-Binding Proteins/genetics/physiology ; Embryo, Mammalian/metabolism ; *Gene Deletion ; Gene Expression Regulation, Developmental ; Heart/embryology ; Heart Defects, Congenital/*genetics ; Humans ; Mice ; Neural Crest/cytology/embryology ; Phenotype ; Proteins/*genetics/physiology ; Transcription Factors/genetics/physiology ; Ubiquitins/metabolism ; Zebrafish Proteins
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 91
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    Unlimited mileage from telomerase? (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-03-13
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉de Lange, T -- DePinho, R A -- CA76027/CA/NCI NIH HHS/ -- HD 348880/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1999 Feb 12;283(5404):947-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Cell Biology and Genetics, Rockefeller University, New York, NY 10021, USA. delange@rockvax.rockefeller.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10075559" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Cell Aging ; *Cell Division ; *Cell Transformation, Neoplastic ; Cyclin-Dependent Kinase Inhibitor p16/metabolism ; Humans ; Neoplasms/enzymology/metabolism/pathology ; Proto-Oncogene Proteins c-myc/metabolism ; Retinoblastoma Protein/metabolism ; Signal Transduction ; Telomerase/genetics/*metabolism ; Telomere/*metabolism ; ras Proteins/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 92
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    Defective thymocyte maturation in p44 MAP kinase (Erk 1) knockout mice (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-11-13
    Beschreibung: The p42 and p44 mitogen-activated protein kinases (MAPKs), also called Erk2 and Erk1, respectively, have been implicated in proliferation as well as in differentiation programs. The specific role of the p44 MAPK isoform in the whole animal was evaluated by generation of p44 MAPK-deficient mice by homologous recombination in embryonic stem cells. The p44 MAPK-/- mice were viable, fertile, and of normal size. Thus, p44 MAPK is apparently dispensable and p42 MAPK (Erk2) may compensate for its loss. However, in p44 MAPK-/- mice, thymocyte maturation beyond the CD4+CD8+ stage was reduced by half, with a similar diminution in the thymocyte subpopulation expressing high levels of T cell receptor (CD3high). In p44 MAPK-/- thymocytes, proliferation in response to activation with a monoclonal antibody to the T cell receptor in the presence of phorbol myristate acetate was severely reduced even though activation of p42 MAPK was more sustained in these cells. The p44 MAPK apparently has a specific role in thymocyte development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pages, G -- Guerin, S -- Grall, D -- Bonino, F -- Smith, A -- Anjuere, F -- Auberger, P -- Pouyssegur, J -- New York, N.Y. -- Science. 1999 Nov 12;286(5443):1374-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Signaling, Developmental Biology and Cancer Research, CNRS UMR 6543, Centre A. Lacassagne, 33 Avenue de Valombrose, 06189 Nice, France. gpages@unice.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10558995" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antibodies, Monoclonal ; Antigens, CD/analysis ; Antigens, CD3/immunology ; Cell Differentiation ; Cell Division ; Cells, Cultured ; DNA/biosynthesis ; Enzyme Activation ; Gene Targeting ; Isoenzymes/genetics/metabolism ; Mice ; Mice, Knockout ; Mitogen-Activated Protein Kinase 1/metabolism ; Mitogen-Activated Protein Kinase 3 ; Mitogen-Activated Protein Kinases/deficiency/genetics/*metabolism ; Phosphorylation ; Polymorphism, Restriction Fragment Length ; Receptors, Antigen, T-Cell, alpha-beta/analysis/physiology ; T-Lymphocyte Subsets/*cytology/enzymology/immunology ; Tetradecanoylphorbol Acetate/pharmacology ; Thymus Gland/*cytology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 93
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    A long season puts Catalhoyuk in context (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-11-30
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balter, M -- New York, N.Y. -- Science. 1999 Oct 29;286(5441):890-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10577237" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Child ; Female ; *Fossils ; History, Ancient ; Humans ; Male ; Paleopathology ; Skull/*pathology ; Turkey
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 94
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    Convergence of transforming growth factor-beta and vitamin D signaling pathways on SMAD transcriptional coactivators (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-02-26
    Beschreibung: Cell proliferation and differentiation are regulated by growth regulatory factors such as transforming growth factor-beta (TGF-beta) and the liphophilic hormone vitamin D. TGF-beta causes activation of SMAD proteins acting as coactivators or transcription factors in the nucleus. Vitamin D controls transcription of target genes through the vitamin D receptor (VDR). Smad3, one of the SMAD proteins downstream in the TGF-beta signaling pathway, was found in mammalian cells to act as a coactivator specific for ligand-induced transactivation of VDR by forming a complex with a member of the steroid receptor coactivator-1 protein family in the nucleus. Thus, Smad3 may mediate cross-talk between vitamin D and TGF-beta signaling pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yanagisawa, J -- Yanagi, Y -- Masuhiro, Y -- Suzawa, M -- Watanabe, M -- Kashiwagi, K -- Toriyabe, T -- Kawabata, M -- Miyazono, K -- Kato, S -- New York, N.Y. -- Science. 1999 Feb 26;283(5406):1317-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Molecular and Cellular Biosciences, University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10037600" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bone Morphogenetic Protein Receptors ; Bone Morphogenetic Proteins/pharmacology ; COS Cells ; Calcitriol/*metabolism/pharmacology ; Cell Nucleus/metabolism ; DNA-Binding Proteins/*metabolism ; Histone Acetyltransferases ; Ligands ; Nuclear Receptor Coactivator 1 ; Phosphorylation ; Receptor Cross-Talk ; Receptors, Calcitriol/*metabolism ; Receptors, Cell Surface/metabolism ; *Receptors, Growth Factor ; Receptors, Retinoic Acid/metabolism ; Receptors, Transforming Growth Factor beta/metabolism ; Recombinant Fusion Proteins/metabolism ; Retinoid X Receptors ; Signal Transduction ; Smad3 Protein ; Trans-Activators/*metabolism ; Transcription Factors/metabolism ; *Transcriptional Activation ; Transfection ; Transforming Growth Factor beta/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 95
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    AIDS. European vaccine effort faces Chinese puzzle (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-12-28
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balter, M -- New York, N.Y. -- Science. 1999 Nov 5;286(5442):1062-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10610516" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): AIDS Vaccines/*immunology ; China ; Clinical Trials as Topic ; Clinical Trials, Phase I as Topic ; Europe ; HIV/classification/immunology ; HIV Infections/immunology/virology ; Humans ; Vaccines, Synthetic/immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 96
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    Animal testing. One mouse's meat is another one's poison (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-09-15
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Helmuth, L -- New York, N.Y. -- Science. 1999 Aug 20;285(5431):1190-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10484726" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Estradiol/*pharmacology/toxicity ; *Genetic Variation ; Humans ; Litter Size ; Male ; Maximum Allowable Concentration ; Mice ; Mice, Inbred Strains ; Species Specificity ; Spermatogenesis/*drug effects ; Testis/*drug effects ; *Toxicity Tests
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 97
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    Environment and behavior of 2.5-million-year-old Bouri hominids (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-04-24
    Beschreibung: The Hata Member of the Bouri Formation is defined for Pliocene sedimentary outcrops in the Middle Awash Valley, Ethiopia. The Hata Member is dated to 2.5 million years ago and has produced a new species of Australopithecus and hominid postcranial remains not currently assigned to species. Spatially associated zooarchaeological remains show that hominids acquired meat and marrow by 2.5 million years ago and that they are the near contemporary of Oldowan artifacts at nearby Gona. The combined evidence suggests that behavioral changes associated with lithic technology and enhanced carnivory may have been coincident with the emergence of the Homo clade from Australopithecus afarensis in eastern Africa.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉de Heinzelin, J -- Clark, J D -- White, T -- Hart, W -- Renne, P -- WoldeGabriel, G -- Beyene, Y -- Vrba, E -- New York, N.Y. -- Science. 1999 Apr 23;284(5414):625-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut Royal des Sciences Naturelles de Belgique, Rue Vautier 29, B-1000 Bruxelles, Belgium.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10213682" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Diet ; Ethiopia ; *Fossils ; *Geologic Sediments ; History, Ancient ; *Hominidae ; Humans
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 98
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    Paracellin-1, a renal tight junction protein required for paracellular Mg2+ resorption (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-07-03
    Beschreibung: Epithelia permit selective and regulated flux from apical to basolateral surfaces by transcellular passage through cells or paracellular flux between cells. Tight junctions constitute the barrier to paracellular conductance; however, little is known about the specific molecules that mediate paracellular permeabilities. Renal magnesium ion (Mg2+) resorption occurs predominantly through a paracellular conductance in the thick ascending limb of Henle (TAL). Here, positional cloning has identified a human gene, paracellin-1 (PCLN-1), mutations in which cause renal Mg2+ wasting. PCLN-1 is located in tight junctions of the TAL and is related to the claudin family of tight junction proteins. These findings provide insight into Mg2+ homeostasis, demonstrate the role of a tight junction protein in human disease, and identify an essential component of a selective paracellular conductance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Simon, D B -- Lu, Y -- Choate, K A -- Velazquez, H -- Al-Sabban, E -- Praga, M -- Casari, G -- Bettinelli, A -- Colussi, G -- Rodriguez-Soriano, J -- McCredie, D -- Milford, D -- Sanjad, S -- Lifton, R P -- F.1/Telethon/Italy -- R01DK51696/DK/NIDDK NIH HHS/ -- TGM06S01/Telethon/Italy -- New York, N.Y. -- Science. 1999 Jul 2;285(5424):103-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10390358" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Calcium/urine ; Chromosomes, Human, Pair 3/genetics ; Claudins ; Cloning, Molecular ; Female ; Genes, Recessive ; Homeostasis ; Humans ; Kidney Diseases/*genetics/metabolism ; Kidney Tubules/chemistry ; Loop of Henle/chemistry/*metabolism ; Magnesium/blood/*metabolism ; Magnesium Deficiency/*genetics/metabolism ; Male ; Membrane Proteins/analysis/chemistry/genetics/*physiology ; Molecular Sequence Data ; Mutation ; Pedigree ; Physical Chromosome Mapping ; Tight Junctions/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 99
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    Beta-defensins: linking innate and adaptive immunity through dendritic and T cell CCR6 (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-10-16
    Beschreibung: Defensins contribute to host defense by disrupting the cytoplasmic membrane of microorganisms. This report shows that human beta-defensins are also chemotactic for immature dendritic cells and memory T cells. Human beta-defensin was selectively chemotactic for cells stably transfected to express human CCR6, a chemokine receptor preferentially expressed by immature dendritic cells and memory T cells. The beta-defensin-induced chemotaxis was sensitive to pertussis toxin and inhibited by antibodies to CCR6. The binding of iodinated LARC, the chemokine ligand for CCR6, to CCR6-transfected cells was competitively displaced by beta-defensin. Thus, beta-defensins may promote adaptive immune responses by recruiting dendritic and T cells to the site of microbial invasion through interaction with CCR6.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, D -- Chertov, O -- Bykovskaia, S N -- Chen, Q -- Buffo, M J -- Shogan, J -- Anderson, M -- Schroder, J M -- Wang, J M -- Howard, O M -- Oppenheim, J J -- N01-CO-56000/CO/NCI NIH HHS/ -- New York, N.Y. -- Science. 1999 Oct 15;286(5439):525-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Immunoregulation, Division of Basic Sciences, Intramural Research Support Program, SAIC Frederick, National Cancer Institute-Frederick Cancer Research and Development Center, Frederick, MD 21702-1201, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10521347" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Antibodies/immunology ; Binding, Competitive ; Cell Line ; Chemokine CCL20 ; Chemokines, CC/metabolism/pharmacology ; Chemotaxis ; Chemotaxis, Leukocyte ; Defensins ; Dendritic Cells/*immunology ; Humans ; *Immunity, Active ; *Immunity, Innate ; Immunologic Memory ; *Macrophage Inflammatory Proteins ; Pertussis Toxin ; Proteins/pharmacology/*physiology ; Receptors, CCR6 ; Receptors, Chemokine/genetics/*metabolism ; Recombinant Proteins/pharmacology ; T-Lymphocyte Subsets/*immunology ; Transfection ; Virulence Factors, Bordetella/pharmacology ; *beta-Defensins
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 100
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    The looming threat of bioterrorism (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1999-02-26
    Beschreibung: Biological weapons have recently attracted the attention and the resources of the nation. Discerning the nature of the threat of bioweapons as well as appropriate responses to them requires greater attention to the biological characteristics of these instruments of war and terror. The dominant paradigm of a weapon as a nuclear device that explodes or a chemical cloud that is set adrift leaves us ill-equipped conceptually and practically to assess and thus to prevent the potentially devastating effects of bioterrorism. Strengthening the public health and infectious disease infrastructure is an effective step toward averting the suffering that could be wrought by a terrorist's use of a biological agent.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Henderson, D A -- New York, N.Y. -- Science. 1999 Feb 26;283(5406):1279-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Johns Hopkins Center for Civilian Biodefense Studies, Johns Hopkins School of Public Health, Suite 850, Candler Building, 111 Market Place, Baltimore, MD 21202, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10037590" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Anthrax/epidemiology/prevention & control/therapy/transmission ; *Biological Warfare/prevention & control ; Disaster Planning ; Disease Outbreaks ; Humans ; *Public Health ; Smallpox/epidemiology/prevention & control/therapy/transmission ; United States ; Vaccination ; *Violence/prevention & control
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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