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  • Mice  (5,420)
  • American Association for the Advancement of Science (AAAS)  (5,420)
  • American Physical Society
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  • 101
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    Nota bene: biomedicine. Pain-killer genes (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-06-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, O -- New York, N.Y. -- Science. 1999 Jun 4;284(5420):1634.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10383343" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chronic Disease ; Enkephalin, Methionine/biosynthesis/metabolism ; Enkephalins/*genetics ; Gene Transfer Techniques ; *Genetic Therapy ; Genetic Vectors ; Humans ; Mice ; *Pain Management ; Protein Precursors/*genetics ; Simplexvirus/genetics/physiology ; Spinal Cord/virology ; beta-Endorphin/biosynthesis/cerebrospinal fluid/*genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 102
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    Importance of AMPA receptors for hippocampal synaptic plasticity but not for spatial learning (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-06-12
    Description: Gene-targeted mice lacking the L-alpha-amino-3-hydroxy-5-methylisoxazole-4-propionate (AMPA) receptor subunit GluR-A exhibited normal development, life expectancy, and fine structure of neuronal dendrites and synapses. In hippocampal CA1 pyramidal neurons, GluR-A-/- mice showed a reduction in functional AMPA receptors, with the remaining receptors preferentially targeted to synapses. Thus, the CA1 soma-patch currents were strongly reduced, but glutamatergic synaptic currents were unaltered; and evoked dendritic and spinous Ca2+ transients, Ca2+-dependent gene activation, and hippocampal field potentials were as in the wild type. In adult GluR-A-/- mice, associative long-term potentiation (LTP) was absent in CA3 to CA1 synapses, but spatial learning in the water maze was not impaired. The results suggest that CA1 hippocampal LTP is controlled by the number or subunit composition of AMPA receptors and show a dichotomy between LTP in CA1 and acquisition of spatial memory.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zamanillo, D -- Sprengel, R -- Hvalby, O -- Jensen, V -- Burnashev, N -- Rozov, A -- Kaiser, K M -- Koster, H J -- Borchardt, T -- Worley, P -- Lubke, J -- Frotscher, M -- Kelly, P H -- Sommer, B -- Andersen, P -- Seeburg, P H -- Sakmann, B -- New York, N.Y. -- Science. 1999 Jun 11;284(5421):1805-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Neuroscience, Max-Planck Institute for Medical Research, Jahnstrasse 29, 69120 Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10364547" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Bicuculline/pharmacology ; Calcium/metabolism ; Dendrites/physiology/ultrastructure ; GABA Antagonists/pharmacology ; Gene Expression ; Gene Targeting ; Genes, Immediate-Early ; Glutamic Acid/pharmacology/physiology ; Hippocampus/cytology/physiology ; Long-Term Potentiation/*physiology ; *Maze Learning ; Mice ; Mice, Inbred C57BL ; Pyramidal Cells/*physiology/ultrastructure ; Receptors, AMPA/genetics/*physiology ; Receptors, N-Methyl-D-Aspartate/physiology ; Synapses/*physiology/ultrastructure ; Synaptic Transmission
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 103
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    Dependence of human stem cell engraftment and repopulation of NOD/SCID mice on CXCR4 (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-02-05
    Description: Stem cell homing and repopulation are not well understood. The chemokine stromal cell-derived factor-1 (SDF-1) and its receptor CXCR4 were found to be critical for murine bone marrow engraftment by human severe combined immunodeficient (SCID) repopulating stem cells. Treatment of human cells with antibodies to CXCR4 prevented engraftment. In vitro CXCR4-dependent migration to SDF-1 of CD34+CD38-/low cells correlated with in vivo engraftment and stem cell function. Stem cell factor and interleukin-6 induced CXCR4 expression on CD34+ cells, which potentiated migration to SDF-1 and engraftment in primary and secondary transplanted mice. Thus, up-regulation of CXCR4 expression may be useful for improving engraftment of repopulating stem cells in clinical transplantation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peled, A -- Petit, I -- Kollet, O -- Magid, M -- Ponomaryov, T -- Byk, T -- Nagler, A -- Ben-Hur, H -- Many, A -- Shultz, L -- Lider, O -- Alon, R -- Zipori, D -- Lapidot, T -- A130389/PHS HHS/ -- New York, N.Y. -- Science. 1999 Feb 5;283(5403):845-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, The Weizmann Institute of Science, Rehovot 76100, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9933168" target="_blank"〉PubMed〈/a〉
    Keywords: ADP-ribosyl Cyclase ; Animals ; Antibodies ; *Antigens, CD ; Antigens, CD34/analysis/immunology ; Antigens, CD38 ; Antigens, Differentiation/analysis ; Chemokine CXCL12 ; Chemokines, CXC/pharmacology/*physiology ; Chemotaxis ; Colony-Forming Units Assay ; Fetal Blood ; Hematopoietic Stem Cell Mobilization ; *Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/*physiology ; Humans ; Interleukin-6/pharmacology ; Membrane Glycoproteins ; Mice ; Mice, Inbred NOD ; Mice, Knockout ; Mice, SCID ; NAD+ Nucleosidase/analysis ; Receptors, CXCR4/biosynthesis/immunology/*physiology ; Stem Cell Factor/pharmacology ; Tetradecanoylphorbol Acetate/pharmacology ; Up-Regulation
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 104
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    Nota bene: medicine. Fear of flying! (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, O -- New York, N.Y. -- Science. 1999 Apr 2;284(5411):61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10215531" target="_blank"〉PubMed〈/a〉
    Keywords: 2S Albumins, Plant ; Allergens/genetics/*immunology ; Anaphylaxis/*prevention & control/therapy ; Animals ; Antigens, Plant ; Arachis/*adverse effects/immunology ; Food Hypersensitivity/*prevention & control/therapy ; Glycoproteins/genetics/*immunology ; Humans ; Immunoglobulin A/blood ; Immunoglobulin E/blood ; Mice ; Plant Proteins ; T-Lymphocytes, Helper-Inducer/immunology ; *Vaccines, DNA/therapeutic use
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 105
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    Cancer research. A new way to combat therapy side effects (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-10-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ferber, D -- New York, N.Y. -- Science. 1999 Sep 10;285(5434):1651, 1653.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10523177" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antineoplastic Agents/*adverse effects ; Apoptosis/*drug effects ; Benzothiazoles ; Cell Division/drug effects/radiation effects ; Cells, Cultured ; Drug Evaluation, Preclinical ; Gamma Rays/*adverse effects ; Humans ; Mice ; Neoplasms/drug therapy/radiotherapy/*therapy ; Radiation Dosage ; Radiation Tolerance/*drug effects ; Thiazoles/*pharmacology ; Toluene/*analogs & derivatives/pharmacology ; Tumor Suppressor Protein p53/*antagonists & inhibitors/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 106
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    Leakage-resistant blood vessels in mice transgenically overexpressing angiopoietin-1 (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-01-05
    Description: Angiopoietin-1 (Ang1) and vascular endothelial growth factor (VEGF) are endothelial cell-specific growth factors. Direct comparison of transgenic mice overexpressing these factors in the skin revealed that the VEGF-induced blood vessels were leaky, whereas those induced by Ang1 were nonleaky. Moreover, vessels in Ang1-overexpressing mice were resistant to leaks caused by inflammatory agents. Coexpression of Ang1 and VEGF had an additive effect on angiogenesis but resulted in leakage-resistant vessels typical of Ang1. Ang1 therefore may be useful for reducing microvascular leakage in diseases in which the leakage results from chronic inflammation or elevated VEGF and, in combination with VEGF, for promoting growth of nonleaky vessels.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thurston, G -- Suri, C -- Smith, K -- McClain, J -- Sato, T N -- Yancopoulos, G D -- McDonald, D M -- HL-24136/HL/NHLBI NIH HHS/ -- HL-59157/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1999 Dec 24;286(5449):2511-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy and Cardiovascular Research Institute, University of California, San Francisco, CA 94143-0452, USA. gavint@itsa.ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10617467" target="_blank"〉PubMed〈/a〉
    Keywords: Angiopoietin-1 ; Animals ; Arterioles/anatomy & histology/physiology ; Binding Sites ; Capillaries/anatomy & histology/physiology ; *Capillary Permeability ; Ear ; Endothelial Growth Factors/genetics/*physiology ; Endothelium, Vascular/metabolism ; Inflammation/chemically induced ; Inflammation Mediators/pharmacology ; Lymphokines/genetics/*physiology ; Membrane Glycoproteins/genetics/*physiology ; Mice ; Mice, Transgenic ; Microcirculation/anatomy & histology/*physiology ; Mustard Plant ; *Neovascularization, Physiologic ; Plant Extracts/pharmacology ; Plant Lectins ; Plant Oils ; Plants, Medicinal ; Platelet Activating Factor/pharmacology ; Ricin/metabolism ; Serotonin/pharmacology ; Skin/blood supply/metabolism ; Vascular Endothelial Growth Factor A ; Vascular Endothelial Growth Factors ; Venules/anatomy & histology/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 107
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    Apaf-1 and caspase-9 in p53-dependent apoptosis and tumor inhibition (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-02
    Description: The ability of p53 to promote apoptosis in response to mitogenic oncogenes appears to be critical for its tumor suppressor function. Caspase-9 and its cofactor Apaf-1 were found to be essential downstream components of p53 in Myc-induced apoptosis. Like p53 null cells, mouse embryo fibroblast cells deficient in Apaf-1 and caspase-9, and expressing c-Myc, were resistant to apoptotic stimuli that mimic conditions in developing tumors. Inactivation of Apaf-1 or caspase-9 substituted for p53 loss in promoting the oncogenic transformation of Myc-expressing cells. These results imply a role for Apaf-1 and caspase-9 in controlling tumor development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Soengas, M S -- Alarcon, R M -- Yoshida, H -- Giaccia, A J -- Hakem, R -- Mak, T W -- Lowe, S W -- CA13106/CA/NCI NIH HHS/ -- CA64489/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1999 Apr 2;284(5411):156-9.〈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/10102818" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Apoptotic Protease-Activating Factor 1 ; Caspase 9 ; Caspases/genetics/*physiology ; Cell Division ; Cell Transformation, Neoplastic ; Cells, Cultured ; Cytochrome c Group/metabolism ; Genes, myc ; *Genes, p53 ; Genes, ras ; Mice ; Mice, Nude ; Mitochondria/metabolism ; Mutation ; Neoplasms, Experimental/genetics/metabolism/*pathology ; Proteins/genetics/*physiology ; Tumor Suppressor Protein p53/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 108
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    Putting stem cells to work (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Solter, D -- Gearhart, J -- New York, N.Y. -- Science. 1999 Mar 5;283(5407):1468-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology, Max Planck Institute of Immunology, Freiburg, Germany. solter@immunbio.mpg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10206877" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bioethics ; Blastocyst/*cytology ; *Cell Differentiation ; Cell Line ; Cells, Cultured ; Cloning, Organism ; Cytoplasm/physiology ; Embryo, Mammalian/cytology ; Humans ; Mice ; Nuclear Transfer Techniques ; Stem Cells/*cytology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 109
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    Testing the genetics of behavior in mice (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-10-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tordoff, M G -- Bachmanov, A A -- Friedman, M I -- Beauchamp, G K -- R01 DC000882/DC/NIDCD NIH HHS/ -- New York, N.Y. -- Science. 1999 Sep 24;285(5436):2069; author reply 2069-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10523203" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Laboratory ; *Behavior, Animal ; *Diet ; Mice
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 110
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    Planting the seeds of new antimalarial drugs (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ridley, R G -- New York, N.Y. -- Science. 1999 Sep 3;285(5433):1502-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Drug Discovery Research and the New Medicines for Malaria Venture, Special Programme for Research and Training in Tropical Diseases, World Health Organization, Geneva, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10498534" target="_blank"〉PubMed〈/a〉
    Keywords: Aldose-Ketose Isomerases/*antagonists & inhibitors/genetics/metabolism ; Animals ; Antimalarials/pharmacokinetics/*pharmacology ; Drug Design ; Enzyme Inhibitors/pharmacology ; Fosfomycin/analogs & derivatives/pharmacokinetics/pharmacology ; *Hemiterpenes ; Humans ; Malaria/*drug therapy/parasitology ; Malaria, Falciparum/drug therapy ; Mice ; Multienzyme Complexes/*antagonists & inhibitors/genetics/metabolism ; Organelles/drug effects/metabolism ; Organophosphorus Compounds/metabolism ; Oxidoreductases/*antagonists & inhibitors/genetics/metabolism ; Plasmodium falciparum/*drug effects/metabolism ; Steroids/metabolism ; Transferases/antagonists & inhibitors/genetics/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 111
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    Requirement for diverse, low-abundance peptides in positive selection of T cells (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-01-05
    Description: Whether a single major histocompatibility complex (MHC)-bound peptide can drive the positive selection of large numbers of T cells has been a controversial issue. A diverse population of self peptides was shown to be essential for the in vivo development of CD4 T cells. Mice in which all but 5 percent of MHC class II molecules were bound by a single peptide had wild-type numbers of CD4 T cells. However, when the diversity within this 5 percent was lost, CD4 T cell development was impaired. Blocking the major peptide-MHC complex in thymus organ culture had no effect on T cell development, indicating that positive selection occurred on the diverse peptides present at low levels. This requirement for peptide diversity indicates that the interaction between self peptides and T cell receptors during positive selection is highly specific.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barton, G M -- Rudensky, A Y -- New York, N.Y. -- Science. 1999 Jan 1;283(5398):67-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular and Cellular Biology Program of the University of Washington and Fred Hutchinson Cancer Research Center, Seattle, WA 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9872742" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen Presentation ; CD4-Positive T-Lymphocytes/cytology/*immunology/metabolism ; CD8-Positive T-Lymphocytes/cytology/immunology/metabolism ; Cells, Cultured ; Histocompatibility Antigens Class II/*immunology/metabolism ; Lymphocyte Activation ; Lymphocyte Culture Test, Mixed ; Mice ; Mice, Knockout ; Mice, Transgenic ; Peptides/*immunology/metabolism ; Receptors, Antigen, T-Cell/*immunology ; Recombinant Fusion Proteins/metabolism ; Spleen/immunology ; Thymus Gland/immunology
    Print ISSN: 0036-8075
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  • 112
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    Role of the mouse ank gene in control of tissue calcification and arthritis (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-07-15
    Description: Mutation at the mouse progressive ankylosis (ank) locus causes a generalized, progressive form of arthritis accompanied by mineral deposition, formation of bony outgrowths, and joint destruction. Here, we show that the ank locus encodes a multipass transmembrane protein (ANK) that is expressed in joints and other tissues and controls pyrophosphate levels in cultured cells. A highly conserved gene is present in humans and other vertebrates. These results identify ANK-mediated control of pyrophosphate levels as a possible mechanism regulating tissue calcification and susceptibility to arthritis in higher animals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ho, A M -- Johnson, M D -- Kingsley, D M -- 5T32GM07365/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Jul 14;289(5477):265-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology and Howard Hughes Medical Institute, Beckman Center B300, Stanford University School of Medicine, Stanford, CA 94305-5327, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10894769" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arthritis/*genetics/metabolism/pathology ; Base Sequence ; Biological Transport ; COS Cells ; Calcinosis/*genetics ; Chromosome Mapping ; Cloning, Molecular ; Dna ; Diphosphates/*metabolism ; Durapatite/metabolism ; Gene Expression ; Genetic Complementation Test ; Humans ; Membrane Proteins/*genetics/metabolism/*physiology ; Mice ; Mice, Transgenic ; Molecular Sequence Data ; Mutation ; Phenotype ; Phosphate Transport Proteins ; Physical Chromosome Mapping ; Sequence Homology, Nucleic Acid ; Tissue Distribution
    Print ISSN: 0036-8075
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  • 113
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    Regulation of area identity in the mammalian neocortex by Emx2 and Pax6 (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-04-15
    Description: The contribution of extrinsic and genetic mechanisms in determining areas of the mammalian neocortex has been a contested issue. This study analyzes the roles of the regulatory genes Emx2 and Pax6, which are expressed in opposing gradients in the neocortical ventricular zone, in specifying areas. Changes in the patterning of molecular markers and area-specific connections between the cortex and thalamus suggest that arealization of the neocortex is disproportionately altered in Emx2 and Pax6 mutant mice in opposing manners predicted from their countergradients of expression: rostral areas expand and caudal areas contract in Emx2 mutants, whereas the opposite effect is seen in Pax6 mutants. These findings suggest that Emx2 and Pax6 cooperate to regulate arealization of the neocortex and to confer area identity to cortical cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bishop, K M -- Goudreau, G -- O'Leary, D D -- NS31558/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2000 Apr 14;288(5464):344-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10764649" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain Mapping ; Cadherins/biosynthesis/genetics ; DNA-Binding Proteins/*genetics/physiology ; Eye Proteins ; *Gene Expression ; Gene Expression Regulation, Developmental ; *Genes, Homeobox ; *Genes, Regulator ; Homeodomain Proteins/*genetics/physiology ; Mice ; Mice, Inbred C57BL ; Mice, Inbred DBA ; Mice, Mutant Strains ; Morphogenesis ; Neocortex/*embryology/metabolism ; Neural Pathways ; Occipital Lobe/embryology/metabolism ; Paired Box Transcription Factors ; Repressor Proteins ; Somatosensory Cortex/embryology/metabolism ; Thalamus/embryology ; Transcription Factors ; Visual Cortex/embryology/metabolism
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  • 114
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    Effects of environment on compensatory mutations to ameliorate costs of antibiotic resistance (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-02-26
    Description: Most types of antibiotic resistance impose a biological cost on bacterial fitness. These costs can be compensated, usually without loss of resistance, by second-site mutations during the evolution of the resistant bacteria in an experimental host or in a laboratory medium. Different fitness-compensating mutations were selected depending on whether the bacteria evolved through serial passage in mice or in a laboratory medium. This difference in mutation spectra was caused by either a growth condition-specific formation or selection of the compensated mutants. These results suggest that bacterial evolution to reduce the costs of antibiotic resistance can take different trajectories within and outside a host.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bjorkman, J -- Nagaev, I -- Berg, O G -- Hughes, D -- Andersson, D I -- New York, N.Y. -- Science. 2000 Feb 25;287(5457):1479-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Bacteriology, Swedish Institute for Infectious Disease Control, S-171 82 Solna, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10688795" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Animals ; Anti-Bacterial Agents/*pharmacology ; *Antiporters ; Carrier Proteins/genetics ; Culture Media ; Drug Resistance, Microbial/*genetics ; Escherichia coli Proteins ; Evolution, Molecular ; Female ; Fusidic Acid/pharmacology ; Membrane Proteins/genetics ; Mice ; Mice, Inbred BALB C ; *Mutation ; Peptide Elongation Factor G/genetics ; Ribosomal Proteins/genetics ; Salmonella typhimurium/*drug effects/*genetics/growth & development/metabolism ; Selection, Genetic ; Serial Passage ; Streptomycin/pharmacology ; Suppression, Genetic
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    Neuroscience. An antibiotic to treat Alzheimer's? (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: An antibiotic once used to treat traveler's diarrhea might battle Alzheimer's disease as well, researchers announced here last week at the Society for Neuroscience's annual meeting. The drug dissolves Alzheimer's-like plaques in mouse brains, apparently by trapping the copper and zinc that stud these deposits. A clinical trial to test whether the drug helps people with Alzheimer's is already under way.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Helmuth, L -- New York, N.Y. -- Science. 2000 Nov 17;290(5495):1273-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11185394" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*drug therapy/metabolism/pathology ; Amyloid beta-Peptides/*metabolism ; Animals ; Brain/drug effects/metabolism/pathology ; Clinical Trials, Phase II as Topic ; Clioquinol/metabolism/pharmacology/*therapeutic use ; Copper/metabolism/pharmacology ; Humans ; Mice ; Plaque, Amyloid/*drug effects/metabolism ; Zinc/metabolism/pharmacology
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    Prostaglandin D2 as a mediator of allergic asthma (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-03-17
    Description: Allergic asthma is caused by the aberrant expansion in the lung of T helper cells that produce type 2 (TH2) cytokines and is characterized by infiltration of eosinophils and bronchial hyperreactivity. This disease is often triggered by mast cells activated by immunoglobulin E (IgE)-mediated allergic challenge. Activated mast cells release various chemical mediators, including prostaglandin D2 (PGD2), whose role in allergic asthma has now been investigated by the generation of mice deficient in the PGD receptor (DP). Sensitization and aerosol challenge of the homozygous mutant (DP-/-) mice with ovalbumin (OVA) induced increases in the serum concentration of IgE similar to those in wild-type mice subjected to this model of asthma. However, the concentrations of TH2 cytokines and the extent of lymphocyte accumulation in the lung of OVA-challenged DP-/- mice were greatly reduced compared with those in wild-type animals. Moreover, DP-/- mice showed only marginal infiltration of eosinophils and failed to develop airway hyperreactivity. Thus, PGD2 functions as a mast cell-derived mediator to trigger asthmatic responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Matsuoka, T -- Hirata, M -- Tanaka, H -- Takahashi, Y -- Murata, T -- Kabashima, K -- Sugimoto, Y -- Kobayashi, T -- Ushikubi, F -- Aze, Y -- Eguchi, N -- Urade, Y -- Yoshida, N -- Kimura, K -- Mizoguchi, A -- Honda, Y -- Nagai, H -- Narumiya, S -- New York, N.Y. -- Science. 2000 Mar 17;287(5460):2013-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Kyoto University Faculty of Medicine, Kyoto 606-8501, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10720327" target="_blank"〉PubMed〈/a〉
    Keywords: Allergens/immunology ; Animals ; Asthma/immunology/metabolism/pathology/*physiopathology ; Bronchial Hyperreactivity ; Bronchoalveolar Lavage Fluid/cytology/immunology ; Crosses, Genetic ; Female ; Gene Targeting ; Humans ; Immunoglobulin E/blood ; Interferon-gamma/metabolism ; Interleukins/metabolism ; Lung/immunology/metabolism/pathology ; Lymphocytes/immunology ; Male ; Mast Cells/metabolism ; Mice ; Mice, Inbred C57BL ; Mucus/secretion ; Ovalbumin/immunology ; Prostaglandin D2/metabolism/*physiology ; *Receptors, Immunologic ; Receptors, Prostaglandin/genetics/metabolism/*physiology ; Respiratory Mucosa/secretion
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    Localized Rac activation dynamics visualized in living cells (2000)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2000-10-13
    Description: Signaling proteins are thought to be tightly regulated spatially and temporally in order to generate specific and localized effects. For Rac and other small guanosine triphosphatases, binding to guanosine triphosphate leads to interaction with downstream targets and regulates subcellular localization. A method called FLAIR (fluorescence activation indicator for Rho proteins) was developed to quantify the spatio-temporal dynamics of the Rac1 nucleotide state in living cells. FLAIR revealed precise spatial control of growth factor-induced Rac activation, in membrane ruffles and in a gradient of activation at the leading edge of motile cells. FLAIR exemplifies a generally applicable approach for examining spatio-temporal control of protein activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kraynov, V S -- Chamberlain, C -- Bokoch, G M -- Schwartz, M A -- Slabaugh, S -- Hahn, K M -- AG15430/AG/NIA NIH HHS/ -- GM39434/GM/NIGMS NIH HHS/ -- R01 GM-57464/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 2000 Oct 13;290(5490):333-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11030651" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Actins/metabolism ; Animals ; Biosensing Techniques ; Blood ; Cell Membrane/*enzymology/physiology/ultrastructure ; *Cell Movement ; Cell Nucleus/*enzymology ; Cell Polarity ; Enzyme Activation ; Fluorescence ; Guanosine Triphosphate/*metabolism ; Mice ; Nuclear Envelope/enzymology ; Platelet-Derived Growth Factor/pharmacology ; Recombinant Fusion Proteins/metabolism ; Spectrometry, Fluorescence ; rac1 GTP-Binding Protein/*metabolism
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    Selective inhibition of NF-kappaB activation by a peptide that blocks the interaction of NEMO with the IkappaB kinase complex (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-09-01
    Description: Activation of the transcription factor nuclear factor (NF)-kappaB by proinflammatory stimuli leads to increased expression of genes involved in inflammation. Activation of NF-kappaB requires the activity of an inhibitor of kappaB (IkappaB)-kinase (IKK) complex containing two kinases (IKKalpha and IKKbeta) and the regulatory protein NEMO (NF-kappaB essential modifier). An amino-terminal alpha-helical region of NEMO associated with a carboxyl-terminal segment of IKKalpha and IKKbeta that we term the NEMO-binding domain (NBD). A cell-permeable NBD peptide blocked association of NEMO with the IKK complex and inhibited cytokine-induced NF-kappaB activation and NF-kappaB-dependent gene expression. The peptide also ameliorated inflammatory responses in two experimental mouse models of acute inflammation. The NBD provides a target for the development of drugs that would block proinflammatory activation of the IKK complex without inhibiting basal NF-kappaB activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉May, M J -- D'Acquisto, F -- Madge, L A -- Glockner, J -- Pober, J S -- Ghosh, S -- AI 33443/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2000 Sep 1;289(5484):1550-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Immunobiology and Department of Molecular Biophysics and Biochemistry, Howard Hughes Medical Institute, 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/10968790" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Anti-Inflammatory Agents, Non-Steroidal/chemistry/pharmacology ; COS Cells ; Cells, Cultured ; E-Selectin/biosynthesis/genetics ; Endothelium, Vascular/metabolism ; Gene Expression Regulation ; HeLa Cells ; Humans ; I-kappa B Kinase ; Inflammation/drug therapy ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Mutation ; NF-kappa B/*metabolism ; Peptides/chemistry/*pharmacology ; Point Mutation ; Protein Structure, Tertiary ; Protein-Serine-Threonine Kinases/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism
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    A role for histone acetylation in the developmental regulation of VDJ recombination (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-01-22
    Description: VDJ recombination is developmentally regulated in vivo by enhancer-dependent changes in the accessibility of chromosomal recombination signal sequences to the recombinase, but the molecular nature of these changes is unknown. Here histone H3 acetylation was measured along versions of a transgenic VDJ recombination reporter and the endogenous T cell receptor alpha/delta locus. Enhancer activity was shown to impart long-range, developmentally regulated changes in H3 acetylation, and H3 acetylation status was tightly linked to VDJ recombination. H3 hyperacetylation is proposed as a molecular mechanism coupling enhancer activity to accessibility for VDJ recombination.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McMurry, M T -- Krangel, M S -- GM 41052/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Jan 21;287(5452):495-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, Post Office Box 3010, Duke University Medical Center, Durham NC 27710, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10642553" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Animals ; Chromatin/metabolism ; DNA Nucleotidyltransferases/metabolism ; DNA-Binding Proteins/metabolism ; Enhancer Elements, Genetic ; *Gene Rearrangement, T-Lymphocyte ; *Genes, T-Cell Receptor alpha ; Genes, T-Cell Receptor beta ; *Genes, T-Cell Receptor delta ; Histones/*metabolism ; Homeodomain Proteins/metabolism ; Humans ; Mice ; Mice, Transgenic ; Nuclear Proteins ; Protein Sorting Signals ; *Recombination, Genetic ; T-Lymphocytes/*metabolism ; Transgenes ; VDJ Recombinases
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    Functional requirement for class I MHC in CNS development and plasticity (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-12-16
    Description: Class I major histocompatibility complex (class I MHC) molecules, known to be important for immune responses to antigen, are expressed also by neurons that undergo activity-dependent, long-term structural and synaptic modifications. Here, we show that in mice genetically deficient for cell surface class I MHC or for a class I MHC receptor component, CD3zeta, refinement of connections between retina and central targets during development is incomplete. In the hippocampus of adult mutants, N-methyl-D-aspartate receptor-dependent long-term potentiation (LTP) is enhanced, and long-term depression (LTD) is absent. Specific class I MHC messenger RNAs are expressed by distinct mosaics of neurons, reflecting a potential for diverse neuronal functions. These results demonstrate an important role for these molecules in the activity-dependent remodeling and plasticity of connections in the developing and mature mammalian central nervous system (CNS).〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2175035/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2175035/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huh, G S -- Boulanger, L M -- Du, H -- Riquelme, P A -- Brotz, T M -- Shatz, C J -- 1F32EY07016/EY/NEI NIH HHS/ -- EY06912/EY/NEI NIH HHS/ -- F32 EY007016/EY/NEI NIH HHS/ -- F32 EY007016-02/EY/NEI NIH HHS/ -- F32 EY007016-03/EY/NEI NIH HHS/ -- MH48108/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2000 Dec 15;290(5499):2155-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA. gshuh@alum.mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11118151" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD3/genetics/*physiology ; Brain/growth & development/*physiology ; Excitatory Postsynaptic Potentials ; Gene Expression Profiling ; Genes, MHC Class I ; Geniculate Bodies/physiology ; Hippocampus/growth & development/physiology ; Histocompatibility Antigens Class I/genetics/*physiology ; In Situ Hybridization ; Long-Term Potentiation ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Mice, Mutant Strains ; Neural Pathways ; *Neuronal Plasticity ; Neurons/*physiology ; Receptors, GABA-A/metabolism ; Receptors, N-Methyl-D-Aspartate/metabolism ; Retina/growth & development/physiology ; Retinal Ganglion Cells/physiology ; Signal Transduction ; Synapses/*physiology ; Synaptic Transmission ; Visual Pathways
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    Property claims. A deluge of patents creates legal hassles for research (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-04-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 2000 Apr 14;288(5464):255-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10777404" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biotechnology ; Drug Industry ; Europe ; Genome ; Mice ; *Mice, Knockout/genetics ; *Mice, Transgenic/genetics ; National Institutes of Health (U.S.) ; *Patents as Topic ; *Research/legislation & jurisprudence ; Sequence Analysis, DNA ; Technology Transfer ; United States ; Universities
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    Epitopes involved in antibody-mediated protection from Ebola virus (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-03-04
    Description: To determine the ability of antibodies to provide protection from Ebola viruses, monoclonal antibodies (mAbs) to the Ebola glycoprotein were generated and evaluated for efficacy. We identified several protective mAbs directed toward five unique epitopes on Ebola glycoprotein. One of the epitopes is conserved among all Ebola viruses that are known to be pathogenic for humans. Some protective mAbs were also effective therapeutically when administered to mice 2 days after exposure to lethal Ebola virus. The identification of protective mAbs has important implications for developing vaccines and therapies for Ebola virus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, J A -- Hevey, M -- Bakken, R -- Guest, S -- Bray, M -- Schmaljohn, A L -- Hart, M K -- New York, N.Y. -- Science. 2000 Mar 3;287(5458):1664-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Virology Division, U.S. Army Medical Research Institute of Infectious Diseases, 1425 Porter Street, Fort Detrick, Frederick, MD 21702-5011, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10698744" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/*immunology ; Antibodies, Viral/*immunology ; Antibody Affinity ; Antigens, Viral/immunology ; Binding, Competitive ; Complement System Proteins/immunology ; Ebolavirus/*immunology/physiology ; Epitopes/immunology ; Female ; Hemorrhagic Fever, Ebola/*prevention & control/therapy ; Humans ; Immunoglobulin G/immunology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Neutralization Tests ; Specific Pathogen-Free Organisms ; Viral Envelope Proteins/*immunology ; Viral Plaque Assay
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    Crystal structure of a gammadelta T cell receptor ligand T22: a truncated MHC-like fold (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-01-15
    Description: Murine T10 and T22 are highly related nonclassical major histocompatibility complex (MHC) class Ib proteins that bind to certain gammadelta T cell receptors (TCRs) in the absence of other components. The crystal structure of T22b at 3.1 angstroms reveals similarities to MHC class I molecules, but one side of the normal peptide-binding groove is severely truncated, which allows direct access to the beta-sheet floor. Potential gammadelta TCR-binding sites can be inferred from functional mapping of T10 and T22 point mutants and allelic variants. Thus, T22 represents an unusual variant of the MHC-like fold and indicates that gammadelta and alphabeta TCRs interact differently with their respective MHC ligands.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wingren, C -- Crowley, M P -- Degano, M -- Chien, Y -- Wilson, I A -- AI33431/AI/NIAID NIH HHS/ -- CA58896/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2000 Jan 14;287(5451):310-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and the Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10634787" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Substitution ; Animals ; Binding Sites ; Crystallography, X-Ray ; Glycosylation ; Histocompatibility Antigens Class I/*chemistry ; Hydrogen Bonding ; Ligands ; Mice ; Models, Molecular ; Point Mutation ; Protein Conformation ; Protein Folding ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Proteins/*chemistry/immunology/metabolism ; Receptors, Antigen, T-Cell, gamma-delta/immunology/*metabolism ; Surface Properties ; beta 2-Microglobulin/chemistry
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    Treatment of murine colitis by Lactococcus lactis secreting interleukin-10 (2000)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2000-08-26
    Description: The cytokine interleukin-10 (IL-10) has shown promise in clinical trials for treatment of inflammatory bowel disease (IBD). Using two mouse models, we show that the therapeutic dose of IL-10 can be reduced by localized delivery of a bacterium genetically engineered to secrete the cytokine. Intragastric administration of IL-10-secreting Lactococcus lactis caused a 50% reduction in colitis in mice treated with dextran sulfate sodium and prevented the onset of colitis in IL-10(-/-) mice. This approach may lead to better methods for cost-effective and long-term management of IBD in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Steidler, L -- Hans, W -- Schotte, L -- Neirynck, S -- Obermeier, F -- Falk, W -- Fiers, W -- Remaut, E -- New York, N.Y. -- Science. 2000 Aug 25;289(5483):1352-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Ghent University and Flanders Interuniversity Institute for Biotechnology, K. L. Ledeganckstraat 35, 9000 Gent, Belgium. lothar.steidler@dmb.rug.ac.be〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10958782" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Transport ; Colitis/immunology/pathology/prevention & control/therapy ; Colon/immunology/metabolism/microbiology/pathology ; Dextran Sulfate ; Inflammatory Bowel Diseases/immunology/pathology/prevention & control/*therapy ; Interleukin-10/*administration & dosage/*biosynthesis/genetics/metabolism ; Intestinal Mucosa/metabolism/pathology ; Lactococcus lactis/*genetics/immunology/*metabolism ; Mice ; Probiotics/*therapeutic use ; Recombinant Proteins/administration & dosage/biosynthesis/metabolism
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    Genomics and gene therapy. Artificial chromosomes coming to life (2001)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2001-02-24
    Description: One of the biggest obstacles to gene therapy is the delivery of the therapeutic gene to the target tissue so that it is appropriately expressed. In his Perspective, Willard looks at the potential advantages of using a human artificial chromosome to maintain expression of a therapeutic gene and discusses some of the hurdles yet to be overcome before this gene delivery system can be tried out in the clinic.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Willard, H F -- New York, N.Y. -- Science. 2000 Nov 17;290(5495):1308-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics and Center for Human Genetics at Case Western Reserve University and the Research Institute of Universi Hospitals of Cleveland, Cleveland, OH 44106, USA. hfw@po.CWRU.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11185406" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Centromere/chemistry/genetics/physiology ; *Chromosomes, Artificial, Human/genetics/physiology/ultrastructure ; Chromosomes, Artificial, Mammalian ; DNA, Satellite/genetics ; Gene Expression ; Gene Transfer Techniques ; *Genetic Therapy ; Genetic Vectors ; Humans ; Mice
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    Involvement of cellular caveolae in bacterial entry into mast cells (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-08-05
    Description: Caveolae are subcellular structures implicated in the import and transcytosis of macromolecules and in transmembrane signaling. To date, evidence for the existence of caveolae in hematopoietic cells has been ambiguous. Caveolae were detected in the microvilli and intracellular vesicles of cultured mouse bone marrow-derived mast cells (BMMCs). CD48, a receptor for FimH-expressing (type 1 fimbriated) Escherichia coli, was specifically localized to plasmalemmal caveolae in BMMCs. The involvement of caveolae in bacterial entry into BMMCs was indicated because caveolae-disrupting and -usurping agents specifically blocked E. coli entry, and markers of caveolae were actively recruited to sites of bacterial entry. The formation of bacteria-encapsulating caveolar chambers in BMMCs represents a distinct mechanism of microbial entry into phagocytes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shin, J S -- Gao, Z -- Abraham, S N -- AI 35678/AI/NIAID NIH HHS/ -- CA 14236/CA/NCI NIH HHS/ -- DK 50814/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2000 Aug 4;289(5480):785-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Pathology and Microbiology, Duke University Medical Center, Durham, NC 27710, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10926542" target="_blank"〉PubMed〈/a〉
    Keywords: Adhesins, Bacterial/*metabolism ; *Adhesins, Escherichia coli ; Animals ; Antigens, CD/analysis/*metabolism ; Bacterial Adhesion ; Caveolin 1 ; *Caveolins ; Cell Fractionation ; Cell Membrane/chemistry/*metabolism/microbiology/ultrastructure ; Cholera Toxin/pharmacology ; Cyclodextrins/pharmacology ; *Endocytosis ; Escherichia coli/*metabolism/pathogenicity ; *Fimbriae Proteins ; Glycosylphosphatidylinositols/analysis ; Mast Cells/*metabolism/*microbiology/ultrastructure ; Membrane Proteins/analysis ; Mice ; Microscopy, Confocal ; Microscopy, Fluorescence ; Microscopy, Immunoelectron
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    Intellectual property. NIH cuts deal on use of OncoMouse (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-02-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 2000 Jan 28;287(5453):567.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10691532" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Mice ; *Mice, Transgenic ; *National Institutes of Health (U.S.) ; *Neoplasms, Experimental ; *Patents as Topic ; Research Support as Topic ; United States
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    Lipid research. Possible new way to lower cholesterol (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-09-19
    Description: Clinicians may soon be able to mount a multipronged attack against cholesterol, the artery-clogging lipid whose buildup in the body is a major contributor to heart attacks and other cardiovascular diseases. In work reported on page 1524, a team has pinpointed a biological master switch in mice that controls three pathways that work together to both rid the body of excess cholesterol and prevent its absorption from the intestine. The work suggests a new mechanism for reducing cholesterol, for example, with drugs that turn up the activity of the master switch, a protein known as the retinoid X receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ferber, D -- New York, N.Y. -- Science. 2000 Sep 1;289(5484):1446-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10991725" target="_blank"〉PubMed〈/a〉
    Keywords: ATP Binding Cassette Transporter 1 ; ATP-Binding Cassette Transporters/*metabolism ; Animals ; Bile Acids and Salts ; Biological Transport/drug effects ; Cholesterol/*metabolism ; Cholesterol, Dietary/administration & dosage ; DNA-Binding Proteins/metabolism ; Glycoproteins/*metabolism ; Humans ; Intestinal Absorption/drug effects ; Intestines/drug effects/*metabolism ; Liver/metabolism ; Macrophages/metabolism ; Mice ; Orphan Nuclear Receptors ; *Receptors, Cytoplasmic and Nuclear ; Receptors, Retinoic Acid/*metabolism ; Receptors, Thyroid Hormone/metabolism ; Retinoid X Receptors ; Transcription Factors/*metabolism
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    Immunology. A touch of antibody class (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-06-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stavnezer, J -- New York, N.Y. -- Science. 2000 May 12;288(5468):984-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Genetics and Microbiology, University of Massachusetts Medical School, 55 Lake Avenue N., Worcester, MA 01655, USA. Janet.Stavnezer@umassmed.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10841719" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/*immunology ; Cytokines/immunology ; DNA/genetics/*metabolism ; Genes, Immunoglobulin ; *Immunoglobulin Class Switching ; Immunoglobulin Heavy Chains/genetics ; *Immunoglobulin Switch Region ; Mice ; Mice, Transgenic ; Models, Genetic ; *Nucleic Acid Hybridization ; RNA/genetics/*metabolism ; RNA Splicing ; Recombination, Genetic ; Ribonuclease H/genetics/metabolism ; Templates, Genetic ; Transcription, Genetic
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    Regulation of cell fate decision of undifferentiated spermatogonia by GDNF (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-02-26
    Description: The molecular control of self-renewal and differentiation of stem cells has remained enigmatic. Transgenic loss-of-function and overexpression models now show that the dosage of glial cell line-derived neurotrophic factor (GDNF), produced by Sertoli cells, regulates cell fate decisions of undifferentiated spermatogonial cells that include the stem cells for spermatogenesis. Gene-targeted mice with one GDNF-null allele show depletion of stem cell reserves, whereas mice overexpressing GDNF show accumulation of undifferentiated spermatogonia. They are unable to respond properly to differentiation signals and undergo apoptosis upon retinoic acid treatment. Nonmetastatic testicular tumors are regularly formed in older GDNF-overexpressing mice. Thus, GDNF contributes to paracrine regulation of spermatogonial self-renewal and differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meng, X -- Lindahl, M -- Hyvonen, M E -- Parvinen, M -- de Rooij, D G -- Hess, M W -- Raatikainen-Ahokas, A -- Sainio, K -- Rauvala, H -- Lakso, M -- Pichel, J G -- Westphal, H -- Saarma, M -- Sariola, H -- New York, N.Y. -- Science. 2000 Feb 25;287(5457):1489-93.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Research Programs of Developmental Biology, Molecular Neurobiology, Electron Microscopy Unit, Institute of Biotechnology, Viikki Biocenter, Finland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10688798" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis/drug effects ; Cell Cycle ; Cell Differentiation/drug effects ; Cobalt/metabolism ; *Drosophila Proteins ; Female ; Gene Expression ; Gene Targeting ; Glial Cell Line-Derived Neurotrophic Factor ; Glial Cell Line-Derived Neurotrophic Factor Receptors ; Male ; Mice ; Mice, Transgenic ; Mitosis ; *Nerve Growth Factors ; Nerve Tissue Proteins/genetics/*physiology ; Proto-Oncogene Proteins/genetics/metabolism ; Proto-Oncogene Proteins c-ret ; Receptor Protein-Tyrosine Kinases/genetics/metabolism ; Sertoli Cells/cytology/physiology ; *Spermatogenesis ; Spermatogonia/*cytology/drug effects ; Stem Cells/*cytology ; Testicular Neoplasms/pathology ; Testis/anatomy & histology ; Vitamin A/pharmacology
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    Two-amino acid molecular switch in an epithelial morphogen that regulates binding to two distinct receptors (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-10-20
    Description: Ectodysplasin, a member of the tumor necrosis factor family, is encoded by the anhidrotic ectodermal dysplasia (EDA) gene. Mutations in EDA give rise to a clinical syndrome characterized by loss of hair, sweat glands, and teeth. EDA-A1 and EDA-A2 are two isoforms of ectodysplasin that differ only by an insertion of two amino acids. This insertion functions to determine receptor binding specificity, such that EDA-A1 binds only the receptor EDAR, whereas EDA-A2 binds only the related, but distinct, X-linked ectodysplasin-A2 receptor (XEDAR). In situ binding and organ culture studies indicate that EDA-A1 and EDA-A2 are differentially expressed and play a role in epidermal morphogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yan, M -- Wang, L C -- Hymowitz, S G -- Schilbach, S -- Lee, J -- Goddard, A -- de Vos, A M -- Gao, W Q -- Dixit, V M -- New York, N.Y. -- Science. 2000 Oct 20;290(5491):523-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Oncology, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11039935" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acid Substitution ; Animals ; Binding Sites ; Cell Line ; DNA-Binding Proteins/metabolism ; Ectodermal Dysplasia/genetics ; Ectodysplasins ; Epidermis/embryology/*metabolism ; Humans ; *I-kappa B Proteins ; In Situ Hybridization ; Ligands ; Membrane Proteins/*chemistry/*metabolism ; Mice ; Models, Molecular ; Molecular Sequence Data ; Morphogenesis ; NF-kappa B/metabolism ; Phosphorylation ; Point Mutation ; Protein Conformation ; Proteins/metabolism ; Receptors, Cell Surface/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; TNF Receptor-Associated Factor 6 ; Transfection
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    Induction and maintenance of the neuronal cholinergic phenotype in the central nervous system by BMP-9 (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-07-15
    Description: Bone morphogenetic proteins (BMPs) have multiple functions in the developing nervous system. A member of this family, BMP-9, was found to be highly expressed in the embryonic mouse septum and spinal cord, indicating a possible role in regulating the cholinergic phenotype. In cultured neurons, BMP-9 directly induced the expression of the cholinergic gene locus encoding choline acetyltransferase and the vesicular acetylcholine transporter and up-regulated acetylcholine synthesis. The effect was reversed upon withdrawal of BMP-9. Intracerebroventricular injection of BMP-9 increased acetylcholine levels in vivo. Although certain other BMPs also up-regulated the cholinergic phenotype in vitro, they were less effective than BMP-9. These data indicate that BMP-9 is a differentiating factor for cholinergic central nervous system neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lopez-Coviella, I -- Berse, B -- Krauss, R -- Thies, R S -- Blusztajn, J K -- P01 AG09525/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2000 Jul 14;289(5477):313-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychiatry and Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA 02118, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10894782" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/biosynthesis ; Animals ; Bone Morphogenetic Proteins/*physiology ; Carrier Proteins/genetics ; Cells, Cultured ; Central Nervous System ; Choline O-Acetyltransferase/genetics ; Embryo, Mammalian/metabolism ; Fibroblast Growth Factor 2/physiology ; Gene Expression Regulation, Developmental ; Gene Expression Regulation, Enzymologic ; Growth Differentiation Factor 2 ; *Membrane Transport Proteins ; Mice ; Neurons/metabolism ; Phenotype ; RNA, Messenger/metabolism ; Septum of Brain/embryology/metabolism ; Spinal Cord/embryology/metabolism ; Up-Regulation ; Vesicular Acetylcholine Transport Proteins ; *Vesicular Transport Proteins
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    Transgenic mouse model of stunned myocardium (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-01-22
    Description: Stunned myocardium is a syndrome of reversible contractile failure that frequently complicates coronary artery disease. Cardiac excitation is uncoupled from contraction at the level of the myofilaments. Selective proteolysis of the thin filament protein troponin I has been correlated with stunned myocardium. Here, transgenic mice expressing the major degradation product of troponin I (TnI1-193) in the heart were found to develop ventricular dilatation, diminished contractility, and reduced myofilament calcium responsiveness, recapitulating the phenotype of stunned myocardium. Proteolysis of troponin I also occurs in ischemic human cardiac muscle. Thus, troponin I proteolysis underlies the pathogenesis of a common acquired form of heart failure.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Murphy, A M -- Kogler, H -- Georgakopoulos, D -- McDonough, J L -- Kass, D A -- Van Eyk, J E -- Marban, E -- HL 44065/HL/NHLBI NIH HHS/ -- HL 63038/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2000 Jan 21;287(5452):488-91.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, Johns Hopkins University School of Medicine, Ross Building 1144, 720 Rutland Avenue, Baltimore, MD 21205, USA. murphy@jhmi.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10642551" target="_blank"〉PubMed〈/a〉
    Keywords: Actin Cytoskeleton/metabolism ; Adrenergic beta-Agonists/pharmacology ; Animals ; Calcium/metabolism ; Cardiomegaly/pathology ; Dilatation, Pathologic ; *Disease Models, Animal ; Heart Rate ; Heart Ventricles/pathology ; Humans ; Isoproterenol/pharmacology ; Mice ; Mice, Inbred C57BL ; *Mice, Transgenic ; Myocardial Contraction ; Myocardial Stunning/*metabolism/pathology/physiopathology ; Myocardium/*metabolism/pathology ; Myofibrils/metabolism ; Troponin I/genetics/*metabolism ; Ventricular Function, Left
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    Perspectives: drug delivery. Regulating export of ER cargo (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-02-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aridor, M -- Balch, W E -- New York, N.Y. -- Science. 2000 Feb 4;287(5454):816-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Molecular Biology, Scripps Research Institute, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10691557" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Transport ; Cell Line ; Drug Delivery Systems ; Endoplasmic Reticulum/*metabolism/secretion ; Golgi Apparatus/metabolism ; Growth Hormone/chemistry/metabolism/secretion ; Immunophilins/chemistry/metabolism ; Insulin/chemistry/metabolism/secretion ; Ligands ; Mice ; Models, Biological ; Protein Conformation ; Protein Engineering ; Protein Folding ; Recombinant Fusion Proteins/*chemistry/*metabolism/secretion ; Tacrolimus Binding Proteins
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    Role of the enteric nervous system in the fluid and electrolyte secretion of rotavirus diarrhea (2000)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2000-01-22
    Description: The mechanism underlying the intestinal fluid loss in rotavirus diarrhea, which often afflicts children in developing countries, is not known. One hypothesis is that the rotavirus evokes intestinal fluid and electrolyte secretion by activation of the nervous system in the intestinal wall, the enteric nervous system (ENS). Four different drugs that inhibit ENS functions were used to obtain experimental evidence for this hypothesis in mice in vitro and in vivo. The involvement of the ENS in rotavirus diarrhea indicates potential sites of action for drugs in the treatment of the disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lundgren, O -- Peregrin, A T -- Persson, K -- Kordasti, S -- Uhnoo, I -- Svensson, L -- New York, N.Y. -- Science. 2000 Jan 21;287(5452):491-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, Goteborg University, Box 432, S-405 30 Goteborg, Sweden. ove.lundgren@fysiologi.gu.se〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10642552" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; Body Water/*secretion ; Diarrhea/drug therapy/*physiopathology ; Electrolytes/*metabolism ; Enteric Nervous System/drug effects/*physiopathology ; Hexamethonium/pharmacology ; In Vitro Techniques ; Intestinal Mucosa/drug effects/*secretion ; Intestine, Small/innervation ; Lidocaine/pharmacology ; Mecamylamine/pharmacology ; Mice ; Mice, Inbred BALB C ; Nicotinic Antagonists/pharmacology ; Patch-Clamp Techniques ; Rotavirus Infections/drug therapy/*physiopathology ; Synaptic Transmission/drug effects ; Tetrodotoxin/pharmacology ; Theophylline/pharmacology
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    Regulation of antigen-specific CD8+ T cell homeostasis by perforin and interferon-gamma (2000)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2000-11-18
    Description: T cell memory depends on factors that regulate expansion and death of these cells after antigenic stimulation. Mice deficient in perforin and interferon-gamma (IFN-gamma) exhibited increased expansion, altered immunodominance, and decreased death of antigen-specific CD8+ T cells after infection with an attenuated strain of Listeria monocytogenes, which was cleared from these mice. Expansion of CD8+ T cells was controlled by perforin, whereas IFN-gamma regulated immunodominance and the death phase. Thus, perforin and IFN-gamma regulate distinct elements of CD8+ T cell homeostasis independently of their role as antimicrobial effector molecules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Badovinac, V P -- Tvinnereim, A R -- Harty, J T -- AI36864/AI/NIAID NIH HHS/ -- AI42767/AI/NIAID NIH HHS/ -- T32AI07511/AI/NIAID NIH HHS/ -- etc. -- New York, N.Y. -- Science. 2000 Nov 17;290(5495):1354-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA 52242, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11082062" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen-Presenting Cells/immunology ; Antigens, Bacterial/immunology ; Apoptosis ; CD8-Positive T-Lymphocytes/cytology/*immunology ; Homeostasis ; Immunodominant Epitopes/*immunology ; *Immunologic Memory ; Interferon-gamma/*physiology ; Listeria monocytogenes/immunology ; Listeriosis/*immunology ; Lymphocytic Choriomeningitis/immunology ; Membrane Glycoproteins/*physiology ; Mice ; Mice, Inbred BALB C ; Mice, Knockout ; Perforin ; Pore Forming Cytotoxic Proteins
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    Inhibition of experimental liver cirrhosis in mice by telomerase gene delivery (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-02-26
    Description: Accelerated telomere loss has been proposed to be a factor leading to end-stage organ failure in chronic diseases of high cellular turnover such as liver cirrhosis. To test this hypothesis directly, telomerase-deficient mice, null for the essential telomerase RNA (mTR) gene, were subjected to genetic, surgical, and chemical ablation of the liver. Telomere dysfunction was associated with defects in liver regeneration and accelerated the development of liver cirrhosis in response to chronic liver injury. Adenoviral delivery of mTR into the livers of mTR(-/-) mice with short dysfunctional telomeres restored telomerase activity and telomere function, alleviated cirrhotic pathology, and improved liver function. These studies indicate that telomere dysfunction contributes to chronic diseases of continual cellular loss-replacement and encourage the evaluation of "telomerase therapy" for such diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rudolph, K L -- Chang, S -- Millard, M -- Schreiber-Agus, N -- DePinho, R A -- K08 AG001019/AG/NIA NIH HHS/ -- R01HD28317/HD/NICHD NIH HHS/ -- R01HD34880/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2000 Feb 18;287(5456):1253-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Adult Oncology, Medicine and Genetics, Dana-Farber Cancer Institute, 44 Binney Street (M413), and Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10678830" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoviridae/genetics ; Animals ; Apoptosis ; Carbon Tetrachloride/toxicity ; Gene Transfer Techniques ; *Genetic Therapy ; Genetic Vectors ; Hepatectomy ; Liver/enzymology/*pathology ; Liver Cirrhosis, Experimental/enzymology/pathology/physiopathology/*therapy ; *Liver Regeneration ; Mice ; Mice, Knockout ; Mice, Transgenic ; Mitosis ; Spleen/enzymology ; Telomerase/*genetics/metabolism ; Telomere/physiology/ultrastructure ; Transforming Growth Factor beta/metabolism
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    Neurobiology. A stargazer foretells the way to the synapse (2001)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2001-02-24
    Description: How do AMPA receptors that are made in the cytoplasm of excitatory neurons travel to and become localized in the distant postsynaptic membranes of dendrites? Nakagawa and Sheng, in a Perspective, suggest that the answer may lie in the stargazin protein that has now been found to interact with AMPA receptors, guiding them to the postsynaptic membrane.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nakagawa, T -- Sheng, M -- New York, N.Y. -- Science. 2000 Dec 22;290(5500):2270-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Harvard Medical School and Massachusetts General Hospital, Boston, Massachusetts, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11188726" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium Channels/chemistry/genetics/*metabolism ; Cell Membrane/metabolism ; Cerebellum/cytology/*metabolism ; Dendrites/metabolism ; Mice ; Mice, Mutant Strains ; Models, Biological ; Nerve Tissue Proteins/metabolism ; Neurons/*metabolism ; Protein Binding ; Protein Transport ; Receptors, AMPA/*metabolism ; Synapses/metabolism ; Synaptic Membranes/*metabolism ; Synaptic Transmission
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    CD95/CD95 ligand interactions on epithelial cells in host defense to Pseudomonas aeruginosa (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-10-20
    Description: Pseudomonas aeruginosa causes severe infections, particularly of the lung, that are life threatening. Here, we show that P. aeruginosa infection induces apoptosis of lung epithelial cells by activation of the endogenous CD95/CD95 ligand system. Deficiency of CD95 or CD95 ligand on epithelial cells prevented apoptosis of lung epithelial cells in vivo as well as in vitro. The importance of CD95/CD95 ligand-mediated lung epithelial cell apoptosis was demonstrated by the rapid development of sepsis in CD95- or CD95 ligand-deficient mice, but not in normal mice, after P. aeruginosa infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grassme, H -- Kirschnek, S -- Riethmueller, J -- Riehle, A -- von Kurthy, G -- Lang, F -- Weller, M -- Gulbins, E -- New York, N.Y. -- Science. 2000 Oct 20;290(5491):527-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, University of Tuebingen, Gmelinstrasse 5, 72076 Tuebingen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11039936" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD95/genetics/*metabolism ; *Apoptosis ; Bone Marrow Transplantation ; Cell Line ; Epithelial Cells/*immunology/microbiology/pathology ; Fas Ligand Protein ; Humans ; In Situ Nick-End Labeling ; Lung/*immunology/microbiology/pathology ; Lung Diseases/*immunology/microbiology/pathology ; Membrane Glycoproteins/genetics/*metabolism ; Mice ; Mice, Inbred C3H ; Pseudomonas Infections/*immunology/microbiology/pathology ; Pseudomonas aeruginosa/immunology/*pathogenicity ; Sepsis/microbiology ; Spleen/microbiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Spongiform disease. Experts downplay new vCJD fears (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-09-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balter, M -- New York, N.Y. -- Science. 2000 Sep 8;289(5485):1663-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11001722" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Animals, Domestic ; Carrier State/*veterinary ; Cattle ; Creutzfeldt-Jakob Syndrome/epidemiology/prevention & control/*transmission ; Cricetinae ; Encephalopathy, Bovine Spongiform/epidemiology/prevention & control/*transmission ; Great Britain/epidemiology ; Humans ; Mice ; Prion Diseases/*transmission ; Species Specificity
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 141
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    Biomedicine. Protein loss in cancer cachexia (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-10-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tisdale, M J -- New York, N.Y. -- Science. 2000 Sep 29;289(5488):2293-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Pharmaceutical Sciences Research Institute, Aston University, Birmingham B4 7ET, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11041796" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Proteins/metabolism ; Cachexia/drug therapy/etiology/*metabolism/pathology ; Cell Differentiation ; Cysteine Endopeptidases/genetics/metabolism ; Cytokines/pharmacology ; Homeostasis ; Humans ; Interferon-gamma/pharmacology ; Mice ; Multienzyme Complexes/genetics/metabolism ; Muscle Proteins/*metabolism ; Muscle, Skeletal/cytology/*metabolism/pathology ; MyoD Protein/genetics/metabolism ; Myosins/genetics/metabolism ; NF-kappa B/*metabolism ; Neoplasms/*complications ; Promoter Regions, Genetic ; Proteasome Endopeptidase Complex ; Proteoglycans ; Transcription, Genetic ; Tumor Necrosis Factor-alpha/pharmacology ; Ubiquitins/metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 142
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    A primitive T cell-independent mechanism of intestinal mucosal IgA responses to commensal bacteria (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-06-24
    Description: The immunoglobulin A (IgA) is produced to defend mucosal surfaces from environmental organisms, but host defenses against the very heavy load of intestinal commensal microorganisms are poorly understood. The IgA against intestinal commensal bacterial antigens was analyzed; it was not simply "natural antibody" but was specifically induced and responded to antigenic changes within an established gut flora. In contrast to IgA responses against exotoxins, a significant proportion of this specific anti-commensal IgA induction was through a pathway that was independent of T cell help and of follicular lymphoid tissue organization, which may reflect an evolutionarily primitive form of specific immune defense.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Macpherson, A J -- Gatto, D -- Sainsbury, E -- Harriman, G R -- Hengartner, H -- Zinkernagel, R M -- New York, N.Y. -- Science. 2000 Jun 23;288(5474):2222-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Experimental Immunology, Universitatsspital, Schmelzbergstrasse 12, CH8091, Zurich, Switzerland. amacpher@pathol.unizh.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10864873" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibody Specificity ; Antigens, Bacterial/immunology ; B-Lymphocytes/*immunology ; Bacterial Proteins/immunology ; Enterobacter cloacae/*immunology ; Escherichia coli/*immunology ; Genes, T-Cell Receptor ; Germ-Free Life ; *Immunity, Mucosal ; Immunoglobulin A, Secretory/*biosynthesis/immunology ; Intestinal Mucosa/*immunology/microbiology ; Lipopolysaccharides/immunology ; Mice ; Mice, Inbred C57BL ; Peritoneum/cytology ; Plasma Cells/immunology ; Porins/immunology ; Specific Pathogen-Free Organisms ; T-Lymphocytes/*immunology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Genetics. Was Lamarck just a little bit right? (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-04-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balter, M -- New York, N.Y. -- Science. 2000 Apr 7;288(5463):38.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10766632" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; *DNA Methylation ; France ; *Gene Expression Regulation ; Gene Silencing ; Hair Color/genetics ; History, 18th Century ; History, 19th Century ; Mice ; *Mutation ; Plants/genetics
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    Development. Survival is impossible without an editor (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: RNA editing is a fascinating phenomenon that is found in both animal and plant cells. By converting an adenosine base to an inosine (which behaves like guanosine) in RNA that has already been transcribed, certain RNA sequences (and hence the amino acids they encode) are altered. In a Perspective, Keegan, Gallo and O'Connell explore new results showing that activity of the editing enzyme ADAR1 is crucial for normal development of red blood cells in mouse embryos.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keegan, L P -- Gallo, A -- O'Connell, M A -- New York, N.Y. -- Science. 2000 Dec 1;290(5497):1707-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉MRC Human Genetics Unit, Western General Hospital, Edinburgh EH4 2XU, UK. liam.keegan@hgu.mrc.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11186391" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/metabolism ; Adenosine Deaminase/chemistry/*genetics/*metabolism ; Animals ; Base Pairing ; Central Nervous System/metabolism ; Chimera ; Drosophila/genetics/metabolism ; Embryo, Mammalian/cytology ; Embryo, Nonmammalian ; *Erythropoiesis ; Gene Dosage ; Hematopoietic Stem Cells/cytology/enzymology ; Inosine/metabolism ; Liver/metabolism ; Mice ; Mutation ; Phenotype ; Protein Structure, Tertiary ; *RNA Editing ; RNA Precursors/metabolism ; RNA, Double-Stranded/metabolism ; RNA-Binding Proteins ; Receptors, AMPA/genetics ; Stem Cells/cytology/enzymology ; Teratoma/genetics/pathology
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    Requirement of JNK for stress-induced activation of the cytochrome c-mediated death pathway (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-05-08
    Description: The c-Jun NH2-terminal kinase (JNK) is activated when cells are exposed to ultraviolet (UV) radiation. However, the functional consequence of JNK activation in UV-irradiated cells has not been established. It is shown here that JNK is required for UV-induced apoptosis in primary murine embryonic fibroblasts. Fibroblasts with simultaneous targeted disruptions of all the functional Jnk genes were protected against UV-stimulated apoptosis. The absence of JNK caused a defect in the mitochondrial death signaling pathway, including the failure to release cytochrome c. These data indicate that mitochondria are influenced by proapoptotic signal transduction through the JNK pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tournier, C -- Hess, P -- Yang, D D -- Xu, J -- Turner, T K -- Nimnual, A -- Bar-Sagi, D -- Jones, S N -- Flavell, R A -- Davis, R J -- New York, N.Y. -- Science. 2000 May 5;288(5467):870-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Program in Molecular Medicine, Department of Biochemistry & Molecular Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10797012" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Apoptotic Protease-Activating Factor 1 ; Caspase 3 ; Caspase 9 ; Caspases/metabolism ; Cell Count ; Cell Division ; Cells, Cultured ; Cytochrome c Group/*metabolism ; DNA Fragmentation ; Enzyme Activation ; Fibroblasts ; Gene Targeting ; JNK Mitogen-Activated Protein Kinases ; MAP Kinase Signaling System ; Methyl Methanesulfonate/pharmacology ; Mice ; Mitochondria/metabolism ; Mitogen-Activated Protein Kinases/genetics/*metabolism ; NF-kappa B/metabolism ; *Protein-Serine-Threonine Kinases ; Proteins/metabolism ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-akt ; Proto-Oncogene Proteins c-bcl-2/metabolism ; Tumor Suppressor Protein p53/metabolism ; Ultraviolet Rays
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    Structural mechanism for STI-571 inhibition of abelson tyrosine kinase (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-09-16
    Description: The inadvertent activation of the Abelson tyrosine kinase (Abl) causes chronic myelogenous leukemia (CML). A small-molecule inhibitor of Abl (STI-571) is effective in the treatment of CML. We report the crystal structure of the catalytic domain of Abl, complexed to a variant of STI-571. Critical to the binding of STI-571 is the adoption by the kinase of an inactive conformation, in which a centrally located "activation loop" is not phosphorylated. The conformation of this loop is distinct from that in active protein kinases, as well as in the inactive form of the closely related Src kinases. These results suggest that compounds that exploit the distinctive inactivation mechanisms of individual protein kinases can achieve both high affinity and high specificity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schindler, T -- Bornmann, W -- Pellicena, P -- Miller, W T -- Clarkson, B -- Kuriyan, J -- GM29362/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Sep 15;289(5486):1938-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratories of Molecular Biophysics and Howard Hughes Medical Institute, The Rockefeller University, 1230 York Avenue, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10988075" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antineoplastic Agents/chemistry/*pharmacology ; Benzamides ; Catalytic Domain ; Crystallography, X-Ray ; Enzyme Activation ; Enzyme Inhibitors/chemistry/*pharmacology ; Humans ; Imatinib Mesylate ; Mice ; Models, Molecular ; Phosphorylation ; *Piperazines ; Protein Conformation ; Proto-Oncogene Proteins c-abl/*antagonists & inhibitors/chemistry/metabolism ; Pyrimidines/chemistry/*pharmacology ; Recombinant Fusion Proteins ; Structure-Activity Relationship
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  • 147
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    A structural framework for deciphering the link between I-Ag7 and autoimmune diabetes (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-04-25
    Description: Susceptibility to murine and human insulin-dependent diabetes mellitus correlates strongly with major histocompatibility complex (MHC) class II I-A or HLA-DQ alleles that lack an aspartic acid at position beta57. I-Ag7 lacks this aspartate and is the only class II allele expressed by the nonobese diabetic mouse. The crystal structure of I-Ag7 was determined at 2.6 angstrom resolution as a complex with a high-affinity peptide from the autoantigen glutamic acid decarboxylase (GAD) 65. I-Ag7 has a substantially wider peptide-binding groove around beta57, which accounts for distinct peptide preferences compared with other MHC class II alleles. Loss of Asp(beta57) leads to an oxyanion hole in I-Ag7 that can be filled by peptide carboxyl residues or, perhaps, through interaction with the T cell receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Corper, A L -- Stratmann, T -- Apostolopoulos, V -- Scott, C A -- Garcia, K C -- Kang, A S -- Wilson, I A -- Teyton, L -- CA58896/CA/NCI NIH HHS/ -- DK55037/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2000 Apr 21;288(5465):505-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10775108" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Aspartic Acid/chemistry ; Crystallography, X-Ray ; Diabetes Mellitus, Type 1/*immunology ; Drosophila melanogaster ; *Genes, MHC Class II ; Glutamate Decarboxylase/metabolism ; Histocompatibility Antigens Class II/*chemistry/genetics/metabolism ; Humans ; Hydrogen Bonding ; Mice ; Mice, Inbred NOD ; Models, Molecular ; Molecular Sequence Data ; Peptide Library ; Protein Binding ; Protein Conformation ; Protein Structure, Secondary ; Receptors, Antigen, T-Cell/metabolism ; Recombinant Proteins/chemistry/metabolism
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    Development of CD8alpha-positive dendritic cells from a common myeloid progenitor (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-12-16
    Description: Dendritic cells (DCs) are critical in both initiating adaptive immune responses and maintaining tolerance to self antigens. These apparently contradictory roles have been suggested to depend on different subsets of DCs that arise from either myeloid or lymphoid hematopoietic origins, respectively. Although DC expression of CD8alpha is attributed to a lymphoid origin, here we show that both CD8alpha+ and CD8alpha- DCs can arise from clonogenic common myeloid progenitors in both thymus and spleen. Thus, expression of CD8alpha is not indicative of a lymphoid origin, and phenotypic and functional differences among DC subsets are likely to reflect maturation status rather than ontogeny.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Traver, D -- Akashi, K -- Manz, M -- Merad, M -- Miyamoto, T -- Engleman, E G -- Weissman, I L -- 5T32 AI-07290/AI/NIAID NIH HHS/ -- CA42551/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2000 Dec 15;290(5499):2152-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Stanford University, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11118150" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/analysis ; Antigens, CD8/*analysis ; B-Lymphocytes/cytology/immunology ; Cell Lineage ; Dendritic Cells/*cytology/*immunology ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/cytology ; Immunophenotyping ; Mice ; Mice, Inbred C57BL ; Myeloid Progenitor Cells/*cytology/transplantation ; Spleen/*cytology/immunology ; T-Lymphocytes/cytology/immunology ; Thymus Gland/*cytology/immunology
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  • 149
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    Obesity. Enzyme blocker prompts mice to shed weight (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-08-05
    Description: A multidisciplinary team may have discovered an important new weapon in the battle of the bulge. On page 2379 of this issue, the team reports that a molecule that is needed for fat synthesis in the body may play a key role in appetite signaling in the brain. Moreover, the investigators produced a synthetic inhibitor of this molecule that spurred a dramatic drop in appetite and weight in mice.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gura, T -- New York, N.Y. -- Science. 2000 Jun 30;288(5475):2299-300.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10917820" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Appetite/drug effects ; Appetite Depressants/*pharmacology ; Brain/metabolism ; Enzyme Inhibitors/*pharmacology ; Fasting ; Fatty Acid Synthases/*antagonists & inhibitors ; Humans ; Liver/drug effects/metabolism ; Malonyl Coenzyme A/metabolism ; Mice ; Neuropeptide Y/genetics/metabolism ; Obesity/*drug therapy ; RNA, Messenger/genetics/metabolism ; Weight Loss/*drug effects
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    Circadian rhythms. Two feedback loops run mammalian clock (2000)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2000-06-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 2000 May 12;288(5468):943-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10841707" target="_blank"〉PubMed〈/a〉
    Keywords: ARNTL Transcription Factors ; Animals ; Basic Helix-Loop-Helix Transcription Factors ; Biological Clocks/genetics/*physiology ; CLOCK Proteins ; Cell Cycle Proteins ; Cell Nucleus/metabolism ; Circadian Rhythm/genetics/*physiology ; Cryptochromes ; Drosophila/metabolism ; *Drosophila Proteins ; *Eye Proteins ; Feedback ; Flavoproteins/genetics/*metabolism ; *Gene Expression Regulation ; Mice ; Mutation ; Nuclear Proteins/genetics/*metabolism ; Period Circadian Proteins ; *Photoreceptor Cells, Invertebrate ; Receptors, G-Protein-Coupled ; Trans-Activators/genetics/metabolism ; Transcription Factors/genetics/*metabolism
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    Translational roots for mental retardation? (2001)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2001-02-24
    Description: A flurry of findings points to protein translation in the dendrites of neurons as a key feature leading to the changes at synapses that are vital to learning (see main text). And one recent discovery suggests that when this translation goes awry, it can lead to mental retardation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 2000 Oct 27;290(5492):737.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11184206" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dendrites/*metabolism ; Fragile X Mental Retardation Protein ; Fragile X Syndrome/etiology/genetics/metabolism ; Humans ; Intellectual Disability/*etiology/genetics/metabolism ; Mice ; Mutation ; Nerve Tissue Proteins/*genetics/metabolism ; *Protein Biosynthesis ; *RNA-Binding Proteins ; Synapses/*physiology
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  • 152
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    Transport of peptide-MHC class II complexes in developing dendritic cells (2000)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2000-04-25
    Description: Major histocompatibility complex class II (MHC II) molecules capture peptides within the endocytic pathway to generate T cell receptor (TCR) ligands. Immature dendritic cells (DCs) sequester intact antigens in lysosomes, processing and converting antigens into peptide-MHC II complexes upon induction of DC maturation. The complexes then accumulate in distinctive, nonlysosomal MHC II+ vesicles that appear to migrate to the cell surface. Although the vesicles exclude soluble lysosomal contents and antigen-processing machinery, many contain MHC I and B7 costimulatory molecules. After arrival at the cell surface, the MHC and costimulatory molecules remain clustered. Thus, transport of peptide-MHC II complexes by DCs not only accomplishes transfer from late endocytic compartments to the plasma membrane, but does so in a manner that selectively concentrates TCR ligands and costimulatory molecules for T cell contact.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Turley, S J -- Inaba, K -- Garrett, W S -- Ebersold, M -- Unternaehrer, J -- Steinman, R M -- Mellman, I -- AI-13013/AI/NIAID NIH HHS/ -- AI-34098/AI/NIAID NIH HHS/ -- AI-39672/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2000 Apr 21;288(5465):522-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology and Section of Immunobiology, Ludwig Institute for Cancer Research, Yale University School of Medicine, 333 Cedar Street, Post Office Box 208002, New Haven, CT 06520-8002, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10775112" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; *Antigen Presentation ; Antigens, CD/immunology/metabolism ; Antigens, CD86 ; B-Lymphocytes/immunology/metabolism ; Bicyclo Compounds, Heterocyclic/pharmacology ; Biological Transport ; Cell Membrane/immunology/metabolism ; Cells, Cultured ; Dendritic Cells/*immunology/*metabolism ; Endocytosis ; Endosomes/immunology/metabolism ; Histocompatibility Antigens Class I/immunology/metabolism ; Histocompatibility Antigens Class II/immunology/*metabolism ; Kinetics ; Ligands ; Lipopolysaccharides/immunology ; Lysosomes/immunology/metabolism ; Membrane Glycoproteins/immunology/metabolism ; Mice ; Mice, Inbred C3H ; Muramidase/immunology/*metabolism ; Peptide Fragments/immunology/*metabolism ; Receptors, Antigen, T-Cell/metabolism ; Thiazoles/pharmacology ; Thiazolidines
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    Angiogenesis research. Cancer drugs found to work in new way (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-04-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 2000 Apr 14;288(5464):245.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10777399" target="_blank"〉PubMed〈/a〉
    Keywords: Angiogenesis Inhibitors/*administration & dosage/therapeutic use/toxicity ; Animals ; Antineoplastic Combined Chemotherapy Protocols/*administration & ; dosage/therapeutic use/toxicity ; Clinical Trials as Topic ; Cyclohexanes ; Humans ; Mice ; Neoplasms/*drug therapy/pathology ; Neoplasms, Experimental/drug therapy/pathology ; Neovascularization, Pathologic/*drug therapy/pathology ; Sesquiterpenes/administration & dosage/therapeutic use
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Family of bitter taste receptors found (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-04-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 2000 Mar 24;287(5461):2133-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10744529" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Chemoreceptor Cells/*physiology ; Humans ; Mice ; Multigene Family ; Receptors, Cell Surface/genetics/*physiology ; *Taste ; Taste Buds/*physiology ; Transducin/biosynthesis
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 155
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    Research misconduct. Texas scientist admits falsifying results (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: A University of Texas (UT) immunologist has admitted to federal officials that he falsified research results over at least a 5-year period, leaving a trail of retracted papers and disgruntled collaborators. The scientist, who resigned and has been barred from receiving federal research grants, was found to have repeatedly duped colleagues by spiking test tubes with doses of a radioactive marker that produced positive results, according to detailed reports by UT and federal investigators.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Malakoff, D -- New York, N.Y. -- Science. 2000 Oct 13;290(5490):245-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11183367" target="_blank"〉PubMed〈/a〉
    Keywords: *Allergy and Immunology ; Animals ; HLA-B27 Antigen/genetics ; Mice ; Research/*standards ; *Scientific Misconduct ; Texas ; United States ; United States Office of Research Integrity ; Universities
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Laboratory animals. Researchers fight plan to regulate mice, birds (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Malakoff, D -- New York, N.Y. -- Science. 2000 Oct 6;290(5489):23.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11183138" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Testing Alternatives/*legislation & jurisprudence ; Animal Welfare/*legislation & jurisprudence ; Animals ; *Animals, Laboratory ; Birds ; Mice ; Rats ; United States ; United States Department of Agriculture/*legislation & jurisprudence
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 157
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    NF-kappaB-induced loss of MyoD messenger RNA: possible role in muscle decay and cachexia (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-09-29
    Description: MyoD regulates skeletal muscle differentiation (SMD) and is essential for repair of damaged tissue. The transcription factor nuclear factor kappa B (NF-kappaB) is activated by the cytokine tumor necrosis factor (TNF), a mediator of skeletal muscle wasting in cachexia. Here, the role of NF-kappaB in cytokine-induced muscle degeneration was explored. In differentiating C2C12 myocytes, TNF-induced activation of NF-kappaB inhibited SMD by suppressing MyoD mRNA at the posttranscriptional level. In contrast, in differentiated myotubes, TNF plus interferon-gamma (IFN-gamma) signaling was required for NF-kappaB-dependent down-regulation of MyoD and dysfunction of skeletal myofibers. MyoD mRNA was also down-regulated by TNF and IFN-gamma expression in mouse muscle in vivo. These data elucidate a possible mechanism that may underlie the skeletal muscle decay in cachexia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guttridge, D C -- Mayo, M W -- Madrid, L V -- Wang, C Y -- Baldwin, A S Jr -- AI35098/AI/NIAID NIH HHS/ -- CA72771/CA/NCI NIH HHS/ -- K01 CA78595/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2000 Sep 29;289(5488):2363-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lineberger Comprehensive Cancer Center, Curriculum in Genetics and Molecular Biology, Department of Biology, University of North Carolina, Chapel Hill, Mason Farm Road, Campus Box 7295, Chapel Hill, NC, 27599-7295, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11009425" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CHO Cells ; Cachexia/*etiology/metabolism/pathology ; Cell Differentiation ; Cell Line ; Cricetinae ; DNA-Binding Proteins/genetics/metabolism ; Down-Regulation ; *I-kappa B Proteins ; Interferon-gamma/pharmacology ; Interleukins/pharmacology ; Mice ; Mice, Inbred Strains ; Mice, Nude ; Muscle, Skeletal/*cytology/*metabolism/pathology ; MyoD Protein/*genetics/metabolism ; NF-kappa B/genetics/*metabolism ; RNA, Messenger/genetics/metabolism ; Transcription Factor RelA ; Transcription, Genetic ; Transfection ; Tumor Necrosis Factor-alpha/*pharmacology
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    Allosteric effects of Pit-1 DNA sites on long-term repression in cell type specification (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-11-10
    Description: Reciprocal gene activation and restriction during cell type differentiation from a common lineage is a hallmark of mammalian organogenesis. A key question, then, is whether a critical transcriptional activator of cell type-specific gene targets can also restrict expression of the same genes in other cell types. Here, we show that whereas the pituitary-specific POU domain factor Pit-1 activates growth hormone gene expression in one cell type, the somatotrope, it restricts its expression from a second cell type, the lactotrope. This distinction depends on a two-base pair spacing in accommodation of the bipartite POU domains on a conserved growth hormone promoter site. The allosteric effect on Pit-1, in combination with other DNA binding factors, results in the recruitment of a corepressor complex, including nuclear receptor corepressor N-CoR, which, unexpectedly, is required for active long-term repression of the growth hormone gene in lactotropes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scully, K M -- Jacobson, E M -- Jepsen, K -- Lunyak, V -- Viadiu, H -- Carriere, C -- Rose, D W -- Hooshmand, F -- Aggarwal, A K -- Rosenfeld, M G -- R01 DK18477/DK/NIDDK NIH HHS/ -- R01 DK54802/DK/NIDDK NIH HHS/ -- R01 GM49327/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Nov 10;290(5494):1127-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Endocrinology and Metabolism, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11073444" target="_blank"〉PubMed〈/a〉
    Keywords: Allosteric Regulation ; Animals ; Base Sequence ; Binding Sites ; Cell Line ; Conserved Sequence ; Crystallization ; DNA/*metabolism ; DNA-Binding Proteins/chemistry/genetics/*metabolism ; Female ; *Gene Expression Regulation ; Genes, Reporter ; Growth Hormone/*genetics ; Male ; Mice ; Mice, Transgenic ; Models, Molecular ; Molecular Sequence Data ; Nuclear Proteins/genetics/metabolism ; Nuclear Receptor Co-Repressor 1 ; Pituitary Gland/cytology/*metabolism ; Prolactin/*genetics ; Promoter Regions, Genetic ; Protein Conformation ; Protein Structure, Tertiary ; Rats ; Repressor Proteins/chemistry/genetics/*metabolism ; Transcription Factor Pit-1 ; Transcription Factors/chemistry/genetics/*metabolism ; Transcriptional Activation
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    Requirement for DARPP-32 in progesterone-facilitated sexual receptivity in female rats and mice (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-02-11
    Description: DARPP-32, a dopamine- and adenosine 3',5'-monophosphate (cAMP)-regulated phosphoprotein (32 kilodaltons in size), is an obligate intermediate in progesterone (P)-facilitated sexual receptivity in female rats and mice. The facilitative effect of P on sexual receptivity in female rats was blocked by antisense oligonucleotides to DARPP-32. Homozygous mice carrying a null mutation for the DARPP-32 gene exhibited minimal levels of P-facilitated sexual receptivity when compared to their wild-type littermates. P significantly increased hypothalamic cAMP levels and cAMP-dependent protein kinase activity. These increases were not inhibited by a D1 subclass dopamine receptor antagonist. P also enhanced phosphorylation of DARPP-32 on threonine 34 in the hypothalamus of mice. DARPP-32 activation is thus an obligatory step in progestin receptor regulation of sexual receptivity in rats and mice.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mani, S K -- Fienberg, A A -- O'Callaghan, J P -- Snyder, G L -- Allen, P B -- Dash, P K -- Moore, A N -- Mitchell, A J -- Bibb, J -- Greengard, P -- O'Malley, B W -- MH49662/MH/NIMH NIH HHS/ -- MH57442/MH/NIMH NIH HHS/ -- NS 35457/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 2000 Feb 11;287(5455):1053-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA. smani@bcm.tmc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10669419" target="_blank"〉PubMed〈/a〉
    Keywords: 2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepine/pharmacology ; Animals ; Cyclic AMP/metabolism ; Cyclic AMP-Dependent Protein Kinases/metabolism ; Dopamine/pharmacology ; Dopamine Agonists/pharmacology ; Dopamine and cAMP-Regulated Phosphoprotein 32 ; Female ; Hypothalamus/metabolism ; Injections, Intraventricular ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; *Nerve Tissue Proteins ; Oligonucleotides, Antisense/pharmacology ; Phosphoproteins/genetics/*metabolism ; Phosphorylation ; Posture ; Progesterone/*pharmacology ; Proteins/genetics/metabolism ; Rats ; Rats, Sprague-Dawley ; Receptors, Progesterone/metabolism ; Serotonin/pharmacology ; Sexual Behavior, Animal/*drug effects ; Signal Transduction
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  • 160
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    Perspectives: signal transduction. Signals to move cells (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-02-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dekker, L V -- Segal, A W -- New York, N.Y. -- Science. 2000 Feb 11;287(5455):982-3, 985.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Molecular Medicine, University College London, London, UK. rmhalvd@ucl.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10691572" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/metabolism ; Chemotaxis/*physiology ; Chemotaxis, Leukocyte/*physiology ; Enzyme Activation ; GTP Phosphohydrolases/metabolism ; Heterotrimeric GTP-Binding Proteins/metabolism ; Isoenzymes/metabolism ; Leukocytes/physiology ; Macrophages/physiology ; Mice ; Mice, Knockout ; Phosphatidylinositol 3-Kinases/*metabolism ; Phosphatidylinositol Phosphates/metabolism ; *Protein-Serine-Threonine Kinases ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-akt ; Receptors, Formyl Peptide ; Receptors, Immunologic/metabolism ; Receptors, Interleukin/metabolism ; Receptors, Interleukin-8A ; Receptors, Peptide/metabolism ; *Signal Transduction ; rac GTP-Binding Proteins/metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 161
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    Circadian rhythms. A time to rest: clock signal identified (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 2001 Dec 21;294(5551):2453.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11752547" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Clocks/physiology ; Circadian Rhythm/drug effects/*physiology ; Cricetinae ; Darkness ; Hypothalamus/*metabolism ; Light ; Mice ; *Motor Activity/drug effects ; Mutation ; Neurons/*metabolism ; Receptor, Epidermal Growth Factor/genetics/*metabolism ; Retinal Ganglion Cells/metabolism ; Signal Transduction ; Suprachiasmatic Nucleus/*metabolism ; Transforming Growth Factor alpha/*metabolism/pharmacology
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  • 162
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    Olfaction. Smell's course is predetermined (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 2001 Nov 9;294(5545):1269-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11701909" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain Mapping ; Drosophila ; Mice ; Neurons/*physiology ; Odors ; Olfactory Bulb/metabolism ; Olfactory Pathways/cytology/*physiology ; Olfactory Receptor Neurons/metabolism/*physiology ; Receptors, Odorant/genetics/metabolism ; Smell/*physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 163
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    Publication rights for sequence data producers (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bell, E -- New York, N.Y. -- Science. 2000 Dec 1;290(5497):1696-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11186390" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Base Sequence ; Databases, Factual ; *Genome ; Guidelines as Topic ; Humans ; Major Histocompatibility Complex/*genetics ; Mice ; Peer Review, Research ; *Publishing
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  • 164
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    Identification of critical staphylococcal genes using conditional phenotypes generated by antisense RNA (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-22
    Description: Comprehensive genomic analysis of the important human pathogen Staphylococcus aureus was achieved by a strategy involving antisense technology in a regulatable gene expression system. In addition to known essential genes, many genes of unknown or poorly defined biological function were identified. This methodology allowed gene function to be characterized in a comprehensive, defined set of conditionally growth-defective/lethal isogenic strains. Quantitative titration of the conditional growth effect was performed either in bacterial culture or in an animal model of infection. This genomic strategy offers an approach to the identification of staphylococcal gene products that could serve as targets for antibiotic discovery.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ji, Y -- Zhang, B -- Van, S F -- Horn -- Warren, P -- Woodnutt, G -- Burnham, M K -- Rosenberg, M -- New York, N.Y. -- Science. 2001 Sep 21;293(5538):2266-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, Genetics Research, GlaxoSmithKline Pharmaceuticals Research and Development, Collegeville, PA 19426, USA. yinduo_ji-1@gsk.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11567142" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cloning, Molecular ; Female ; *Gene Expression Regulation, Bacterial ; *Genes, Bacterial ; *Genes, Essential ; Genetic Vectors ; Mice ; Open Reading Frames ; Phenotype ; Pyelonephritis/microbiology ; *RNA, Antisense ; Staphylococcal Infections/microbiology ; Staphylococcus aureus/*genetics/growth & development/pathogenicity ; Transformation, Bacterial ; Virulence/genetics
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  • 165
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    Neurobiology. Cholesterol--making or breaking the synapse (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barres, B A -- Smith, S J -- New York, N.Y. -- Science. 2001 Nov 9;294(5545):1296-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Stanford University School of Medicine, Fairchild Science Building, Stanford, CA 94305-5125, USA. barres@stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11701918" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apolipoproteins E/metabolism/pharmacology ; Astrocytes/*metabolism ; Brain/metabolism ; Cells, Cultured ; Cholesterol/*metabolism/pharmacology ; Coculture Techniques ; Mice ; Neuroglia/metabolism ; Neuronal Plasticity ; Neurons/metabolism/*physiology ; Recombinant Proteins/pharmacology ; Signal Transduction ; Synapses/*physiology
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  • 166
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    SNARE function analyzed in synaptobrevin/VAMP knockout mice (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-03
    Description: SNAREs (soluble NSF-attachment protein receptors) are generally acknowledged as central components of membrane fusion reactions, but their precise function has remained enigmatic. Competing hypotheses suggest roles for SNAREs in mediating the specificity of fusion, catalyzing fusion, or actually executing fusion. We generated knockout mice lacking synaptobrevin/VAMP 2, the vesicular SNARE protein responsible for synaptic vesicle fusion in forebrain synapses, to make use of the exquisite temporal resolution of electrophysiology in measuring fusion. In the absence of synaptobrevin 2, spontaneous synaptic vesicle fusion and fusion induced by hypertonic sucrose were decreased approximately 10-fold, but fast Ca2+-triggered fusion was decreased more than 100-fold. Thus, synaptobrevin 2 may function in catalyzing fusion reactions and stabilizing fusion intermediates but is not absolutely required for synaptic fusion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schoch, S -- Deak, F -- Konigstorfer, A -- Mozhayeva, M -- Sara, Y -- Sudhof, T C -- Kavalali, E T -- New York, N.Y. -- Science. 2001 Nov 2;294(5544):1117-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Basic Neuroscience, Department of Molecular Genetics, Howard Hughes Medical Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390-9111, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11691998" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Calcium/metabolism/pharmacology ; Cells, Cultured ; Hypertonic Solutions ; *Membrane Fusion ; Membrane Proteins/genetics/*physiology ; Mice ; Mice, Knockout ; Mutation ; Patch-Clamp Techniques ; Potassium/pharmacology ; Presynaptic Terminals/physiology ; Prosencephalon/physiology ; R-SNARE Proteins ; SNARE Proteins ; Sucrose/pharmacology ; Synapses/*physiology ; Synaptic Transmission ; Synaptic Vesicles/*physiology ; *Vesicular Transport Proteins
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  • 167
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    Endothelial apoptosis as the primary lesion initiating intestinal radiation damage in mice (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-14
    Description: Gastrointestinal (GI) tract damage by chemotherapy or radiation limits their efficacy in cancer treatment. Radiation has been postulated to target epithelial stem cells within the crypts of Lieberkuhn to initiate the lethal GI syndrome. Here, we show in mouse models that microvascular endothelial apoptosis is the primary lesion leading to stem cell dysfunction. Radiation-induced crypt damage, organ failure, and death from the GI syndrome were prevented when endothelial apoptosis was inhibited pharmacologically by intravenous basic fibroblast growth factor (bFGF) or genetically by deletion of the acid sphingomyelinase gene. Endothelial, but not crypt, cells express FGF receptor transcripts, suggesting that the endothelial lesion occurs before crypt stem cell damage in the evolution of the GI syndrome. This study provides a basis for new approaches to prevent radiation damage to the bowel.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paris, F -- Fuks, Z -- Kang, A -- Capodieci, P -- Juan, G -- Ehleiter, D -- Haimovitz-Friedman, A -- Cordon-Cardo, C -- Kolesnick, R -- CA52462/CA/NCI NIH HHS/ -- CA85704/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2001 Jul 13;293(5528):293-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Signal Transduction and, Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11452123" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Annexin A5/metabolism ; *Apoptosis/drug effects/radiation effects ; Bone Marrow/radiation effects ; Bone Marrow Transplantation ; Capillaries ; Endothelium, Vascular/drug effects/pathology/*radiation effects ; Fibroblast Growth Factors/pharmacology ; Humans ; In Situ Nick-End Labeling ; Intestinal Mucosa/blood supply/cytology/pathology/*radiation effects ; Intestines/blood supply/pathology/*radiation effects ; Mice ; Mice, Inbred C57BL ; Neoplasms/pathology/radiotherapy ; Receptors, Fibroblast Growth Factor/metabolism ; Sphingomyelin Phosphodiesterase/deficiency/genetics/metabolism ; Stem Cells/radiation effects ; Tumor Suppressor Protein p53/deficiency/metabolism ; Whole-Body Irradiation
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    Regulation of differentiation to the infective stage of the protozoan parasite Leishmania major by tetrahydrobiopterin (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-17
    Description: A critical step in the infectious cycle of Leishmania is the differentiation of parasites within the sand fly vector to the highly infective metacyclic promastigote stage. Here, we establish tetrahydrobiopterin (H4B) levels as an important factor controlling the extent of metacyclogenesis. H4B levels decline substantially during normal development, and genetic or nutritional manipulations showed that low H4B caused elevated metacyclogenesis. Mutants lacking pteridine reductase 1 (PTR1) had low levels of H4B, remained infectious to mice, and induced larger cutaneous lesions (hypervirulence). Thus, the control of pteridine metabolism has relevance to the mechanism of Leishmania differentiation and the limitation of virulence during evolution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cunningham, M L -- Titus, R G -- Turco, S J -- Beverley, S M -- AI21903/AI/NIAID NIH HHS/ -- AI31078/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2001 Apr 13;292(5515):285-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11303103" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biopterin/*analogs & derivatives/*metabolism/pharmacology ; Carrier Proteins/genetics/metabolism ; Chromatography, High Pressure Liquid ; Folic Acid/metabolism ; Genes, Protozoan ; Glycosphingolipids/analysis ; Leishmania major/genetics/*growth & development/*metabolism/pathogenicity ; Leishmaniasis, Cutaneous/*parasitology ; *Membrane Transport Proteins ; Mice ; Mice, Inbred BALB C ; Molecular Sequence Data ; Mutation ; Oxidoreductases/genetics/metabolism ; *Protozoan Proteins ; Signal Transduction ; Virulence
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    Taking cell-matrix adhesions to the third dimension (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-27
    Description: Adhesions between fibroblastic cells and extracellular matrix have been studied extensively in vitro, but little is known about their in vivo counterparts. Here, we characterized the composition and function of adhesions in three-dimensional (3D) matrices derived from tissues or cell culture. "3D-matrix adhesions" differ from focal and fibrillar adhesions characterized on 2D substrates in their content of alpha5beta1 and alphavbeta3 integrins, paxillin, other cytoskeletal components, and tyrosine phosphorylation of focal adhesion kinase (FAK). Relative to 2D substrates, 3D-matrix interactions also display enhanced cell biological activities and narrowed integrin usage. These distinctive in vivo 3D-matrix adhesions differ in structure, localization, and function from classically described in vitro adhesions, and as such they may be more biologically relevant to living organisms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cukierman, E -- Pankov, R -- Stevens, D R -- Yamada, K M -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1708-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Craniofacial Developmental Biology and Regeneration Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11721053" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; *Cell Adhesion/drug effects ; Cell Culture Techniques/methods ; Cell Division ; Cell Movement ; Cell Size ; Cells, Cultured ; Culture Techniques/methods ; Cycloheximide/pharmacology ; Cytoskeletal Proteins/metabolism ; Extracellular Matrix/chemistry/metabolism ; Fibroblasts/chemistry/*cytology/*metabolism ; Fibronectins/metabolism ; Fluorescent Antibody Technique, Indirect ; Focal Adhesion Kinase 1 ; Focal Adhesion Protein-Tyrosine Kinases ; Focal Adhesions/chemistry/metabolism ; Glutaral/metabolism ; Humans ; Imaging, Three-Dimensional/*methods ; Integrins/metabolism ; Mice ; Mitogen-Activated Protein Kinases/metabolism ; Molecular Conformation ; Phosphorylation ; Protein-Tyrosine Kinases/metabolism ; Time Factors
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  • 170
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    Clioquinol's return: cautions from Japan (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tabira, T -- New York, N.Y. -- Science. 2001 Jun 22;292(5525):2251-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11424945" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*drug therapy ; Animals ; Clinical Trials, Phase II as Topic ; Clioquinol/*adverse effects/*therapeutic use ; Humans ; Japan ; Mice ; Myelitis/*chemically induced/etiology ; Optic Neuritis/*chemically induced/etiology ; Syndrome ; Vitamin B 12/administration & dosage ; Vitamin B 12 Deficiency/complications
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 171
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    Cancer. A CINtillating new job for the APC tumor suppressor (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pellman, D -- New York, N.Y. -- Science. 2001 Mar 30;291(5513):2555-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatric Oncology, Dana-Farber Cancer Institute, and Pediatric Hematology/Oncology, Children's Hospital, Harvard Medical School, 44 Binney Street, Boston, MA 02115, USA. david_pellman@dfci.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11286276" target="_blank"〉PubMed〈/a〉
    Keywords: Adenomatous Polyposis Coli Protein ; Aneuploidy ; Animals ; Cell Transformation, Neoplastic ; Cells, Cultured ; Chromosome Aberrations ; Chromosome Segregation ; Chromosomes/*physiology ; Colonic Neoplasms/*genetics/metabolism/pathology ; Cytoskeletal Proteins/chemistry/*metabolism ; *Genes, APC ; Humans ; Kinetochores/*metabolism ; Mice ; Microtubule-Associated Proteins/metabolism ; Microtubules/*metabolism ; Mitosis ; Mutation ; Protein Kinases/metabolism ; Protein-Serine-Threonine Kinases ; Spindle Apparatus/metabolism ; Stem Cells/cytology/metabolism ; *Trans-Activators ; beta Catenin
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 172
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    Predictability of the UK variant Creutzfeldt-Jakob disease epidemic (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-10-27
    Description: Back-calculation analysis of the variant Creutzfeldt-Jakob disease epidemic in the United Kingdom is used to estimate the number of infected individuals and future disease incidence. The model assumes a hazard of infection proportional to the incidence of bovine spongiform encephalopathy in the United Kingdom and accounts for precautionary control measures and very wide ranges of incubation periods. The model indicates that current case data are compatible with numbers of infections ranging from a few hundred to several millions. In the latter case, the model suggests that the mean incubation period must be well beyond the human life-span, resulting in disease epidemics of at most several thousand cases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉d'Aignaux, J N -- Cousens, S N -- Smith, P G -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1729-31. Epub 2001 Oct 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉London School of Hygiene and Tropical Medicine, Infectious Disease Epidemiology Unit, Keppel Street, London WC1E 7HT, UK. jerome.huillard@lshtm.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11679631" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Age Distribution ; Age Factors ; Age of Onset ; Animals ; Cattle ; Child ; Child, Preschool ; Creutzfeldt-Jakob Syndrome/*epidemiology/genetics/transmission ; Diet ; Disease Susceptibility ; Encephalopathy, Bovine Spongiform/epidemiology ; Genetic Variation/*genetics ; Genotype ; Great Britain/epidemiology ; Humans ; Incidence ; Infant ; Likelihood Functions ; Methionine/genetics ; Mice ; Models, Biological ; Prevalence ; Prions/administration & dosage/genetics
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  • 173
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    Requirement of Math1 for secretory cell lineage commitment in the mouse intestine (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-12
    Description: The mouse small intestinal epithelium consists of four principal cell types deriving from one multipotent stem cell: enterocytes, goblet, enteroendocrine, and Paneth cells. Previous studies showed that Math1, a basic helix-loop-helix (bHLH) transcription factor, is expressed in the gut. We find that loss of Math1 leads to depletion of goblet, enteroendocrine, and Paneth cells without affecting enterocytes. Colocalization of Math1 with Ki-67 in some proliferating cells suggests that secretory cells (goblet, enteroendocrine, and Paneth cells) arise from a common progenitor that expresses Math1, whereas absorptive cells (enterocytes) arise from a progenitor that is Math1-independent. The continuous rapid renewal of these cells makes the intestinal epithelium a model system for the study of stem cell regeneration and lineage commitment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, Q -- Bermingham, N A -- Finegold, M J -- Zoghbi, H Y -- New York, N.Y. -- Science. 2001 Dec 7;294(5549):2155-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, 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/11739954" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Basic Helix-Loop-Helix Transcription Factors ; *Cell Differentiation ; Cell Division ; Cell Lineage ; Enterocytes/cytology ; Enteroendocrine Cells/cytology ; Gene Expression ; Goblet Cells/cytology ; Helix-Loop-Helix Motifs ; Heterozygote ; Homeodomain Proteins/metabolism ; Intestinal Mucosa/*cytology/embryology/*metabolism ; Intestine, Large/cytology/embryology ; Intestine, Small/cytology/embryology ; Ki-67 Antigen/analysis ; Membrane Proteins/metabolism ; Mice ; Paneth Cells/cytology/metabolism ; Protein Precursors/analysis ; Receptors, Notch ; Signal Transduction ; Stem Cells/*cytology ; Transcription Factors/*genetics/*metabolism
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    In silico mapping of mouse quantitative trait loci (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-02-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Darvasi, A -- New York, N.Y. -- Science. 2001 Dec 21;294(5551):2423.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Evolution Systematicsand Ecology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel. arield@cc.huji.ac.il〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11865449" target="_blank"〉PubMed〈/a〉
    Keywords: *Algorithms ; Animals ; Chromosome Mapping/*methods ; Genetic Variation ; Genotype ; Mice ; Mice, Inbred Strains ; Phenotype ; Polymorphism, Single Nucleotide ; *Quantitative Trait, Heritable
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    An apolipoprotein influencing triglycerides in humans and mice revealed by comparative sequencing (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-10-06
    Description: Comparison of genomic DNA sequences from human and mouse revealed a new apolipoprotein (APO) gene (APOAV) located proximal to the well-characterized APOAI/CIII/AIV gene cluster on human 11q23. Mice expressing a human APOAV transgene showed a decrease in plasma triglyceride concentrations to one-third of those in control mice; conversely, knockout mice lacking Apoav had four times as much plasma triglycerides as controls. In humans, single nucleotide polymorphisms (SNPs) across the APOAV locus were found to be significantly associated with plasma triglyceride levels in two independent studies. These findings indicate that APOAV is an important determinant of plasma triglyceride levels, a major risk factor for coronary artery disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennacchio, L A -- Olivier, M -- Hubacek, J A -- Cohen, J C -- Cox, D R -- Fruchart, J C -- Krauss, R M -- Rubin, E M -- HL-18574/HL/NHLBI NIH HHS/ -- HL-53917/HL/NHLBI NIH HHS/ -- HL66681/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2001 Oct 5;294(5540):169-73.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genome Sciences Department, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11588264" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Alleles ; Animals ; Apolipoprotein C-III ; Apolipoproteins/*genetics/*physiology ; Apolipoproteins A ; Apolipoproteins C/blood ; Chromosomes, Human, Pair 11 ; Cohort Studies ; Computational Biology ; Coronary Disease/etiology/genetics ; Expressed Sequence Tags ; Female ; Haplotypes ; Humans ; Linkage Disequilibrium ; Lipoproteins, VLDL/blood ; Male ; Mice ; Mice, Knockout ; Mice, Transgenic ; Multigene Family ; Open Reading Frames ; Polymorphism, Single Nucleotide ; Risk Factors ; Sequence Analysis, DNA ; Transgenes ; Triglycerides/*blood
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    Defective lymphotoxin-beta receptor-induced NF-kappaB transcriptional activity in NIK-deficient mice (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-17
    Description: The role of NF-kappaB-inducing kinase (NIK) in cytokine signaling remains controversial. To identify the physiologic functions of NIK, we disrupted the NIK locus by gene targeting. Although NIK-/- mice displayed abnormalities in both lymphoid tissue development and antibody responses, NIK-/- cells manifested normal NF-kappaB DNA binding activity when treated with a variety of cytokines, including tumor necrosis factor (TNF), interleukin-1 (IL-1), and lymphotoxin-beta (LTbeta). However, NIK was selectively required for gene transcription induced through ligation of LTbeta receptor but not TNF receptors. These results reveal that NIK regulates the transcriptional activity of NF-kappaB in a receptor-restricted manner.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yin, L -- Wu, L -- Wesche, H -- Arthur, C D -- White, J M -- Goeddel, D V -- Schreiber, R D -- New York, N.Y. -- Science. 2001 Mar 16;291(5511):2162-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Immunology, Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11251123" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; B-Lymphocytes/metabolism ; Cells, Cultured ; DNA/metabolism ; Fibroblasts/metabolism ; Gene Targeting ; Genes, Reporter ; Interleukin-1/metabolism/pharmacology ; Ligands ; Lymphoid Tissue/abnormalities ; Lymphotoxin beta Receptor ; Mice ; Mice, Inbred C57BL ; NF-kappa B/genetics/*metabolism ; Protein-Serine-Threonine Kinases/genetics/*metabolism ; Receptors, Tumor Necrosis Factor/immunology/*metabolism ; Signal Transduction ; *Transcription, Genetic ; Tumor Necrosis Factor-alpha/metabolism/pharmacology
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  • 177
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    Vascular abnormalities and deregulation of VEGF in Lkb1-deficient mice (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-18
    Description: The LKB1 tumor suppressor gene, mutated in Peutz-Jeghers syndrome, encodes a serine/threonine kinase of unknown function. Here we show that mice with a targeted disruption of Lkb1 die at midgestation, with the embryos showing neural tube defects, mesenchymal cell death, and vascular abnormalities. Extraembryonic development was also severely affected; the mutant placentas exhibited defective labyrinth layer development and the fetal vessels failed to invade the placenta. These phenotypes were associated with tissue-specific deregulation of vascular endothelial growth factor (VEGF) expression, including a marked increase in the amount of VEGF messenger RNA. Moreover, VEGF production in cultured Lkb1(-/-) fibroblasts was elevated in both normoxic and hypoxic conditions. These findings place Lkb1 in the VEGF signaling pathway and suggest that the vascular defects accompanying Lkb1 loss are mediated at least in part by VEGF.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ylikorkala, A -- Rossi, D J -- Korsisaari, N -- Luukko, K -- Alitalo, K -- Henkemeyer, M -- Makela, T P -- New York, N.Y. -- Science. 2001 Aug 17;293(5533):1323-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular and Cancer Biology Program, Haartman Institute and Biomedicum Helsinki, Post Office Box 63, University of Helsinki, Helsinki 00014, Finland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11509733" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Vessels/*abnormalities/embryology ; Cell Death ; Cell Hypoxia ; Cells, Cultured ; DNA-Binding Proteins/metabolism ; Embryo, Mammalian/*metabolism ; Embryonic and Fetal Development ; Endothelial Growth Factors/*genetics/*metabolism ; Endothelium, Vascular/abnormalities/cytology/embryology ; *Gene Expression Regulation, Developmental ; Gene Targeting ; Hypoxia-Inducible Factor 1 ; Hypoxia-Inducible Factor 1, alpha Subunit ; In Situ Hybridization ; Lymphokines/*genetics/*metabolism ; Mesoderm/cytology ; Mice ; Mice, Inbred C57BL ; Muscle, Smooth, Vascular/abnormalities/cytology/embryology ; Neural Tube Defects/embryology ; Nuclear Proteins/metabolism ; Phenotype ; Placenta/blood supply/embryology/metabolism ; Protein-Serine-Threonine Kinases/deficiency/genetics/*physiology ; RNA, Messenger/genetics/metabolism ; Signal Transduction ; *Transcription Factors ; Vascular Endothelial Growth Factor A ; Vascular Endothelial Growth Factors
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  • 178
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    Requirement for the SLP-76 adaptor GADS in T cell development (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-10
    Description: GADS is an adaptor protein implicated in CD3 signaling because of its ability to link SLP-76 to LAT. A GADS-deficient mouse was generated by gene targeting, and the function of GADS in T cell development and activation was examined. GADS- CD4-CD8- thymocytes exhibited a severe block in proliferation but still differentiated into mature T cells. GADS- thymocytes failed to respond to CD3 cross-linking in vivo and were impaired in positive and negative selection. Immunoprecipitation experiments revealed that the association between SLP-76 and LAT was uncoupled in GADS- thymocytes. These observations indicate that GADS is a critical adaptor for CD3 signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yoder, J -- Pham, C -- Iizuka, Y M -- Kanagawa, O -- Liu, S K -- McGlade, J -- Cheng, A M -- New York, N.Y. -- Science. 2001 Mar 9;291(5510):1987-91.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Scientist Training Program, Washington University School of Medicine, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11239162" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Animals ; Antigens, CD3/metabolism ; Carrier Proteins/*metabolism ; Cell Differentiation ; Cell Division ; Cell Lineage ; Cell Size ; Female ; Gene Targeting ; Lymphocyte Activation ; Male ; *Membrane Proteins ; Mice ; Mice, Transgenic ; Phosphoproteins/*metabolism ; Phosphorylation ; Receptors, Antigen, T-Cell/metabolism ; Signal Transduction ; Spleen/cytology/immunology ; T-Lymphocytes/*cytology/immunology ; Thymus Gland/cytology/immunology ; src Homology Domains
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  • 179
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    Neuroscience. New leads on the 'how' of Alzheimer's (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J -- New York, N.Y. -- Science. 2001 Sep 21;293(5538):2192-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11567120" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/metabolism/pathology/*physiopathology ; Amyloid beta-Peptides/metabolism ; Amyloid beta-Protein Precursor/metabolism ; Animals ; *Apoptosis ; Brain/*metabolism/pathology ; Carrier Proteins/metabolism ; Caspases/*metabolism ; Cells, Cultured ; DNA Fragmentation ; Enzyme Activation ; Humans ; In Situ Nick-End Labeling ; JNK Mitogen-Activated Protein Kinases ; Mice ; Microfilament Proteins/metabolism ; Mitogen-Activated Protein Kinases/metabolism ; Nerve Degeneration ; Neurons/metabolism/pathology/*physiology ; Synapses/enzymology
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    Taste research. New gene may be key to sweet tooth (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-05-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davenport, R J -- New York, N.Y. -- Science. 2001 Apr 27;292(5517):620.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11330309" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; GTP-Binding Proteins/metabolism ; Genes ; Genetic Variation ; Humans ; Mice ; Receptors, Cell Surface/chemistry/*genetics/metabolism ; *Receptors, G-Protein-Coupled ; Saccharin ; Sucrose ; Taste/*genetics ; Taste Buds/*metabolism
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    Formation of neurofibrillary tangles in P301l tau transgenic mice induced by Abeta 42 fibrils (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-25
    Description: beta-Amyloid plaques and neurofibrillary tangles (NFTs) are the defining neuropathological hallmarks of Alzheimer's disease, but their pathophysiological relation is unclear. Injection of beta-amyloid Abeta42 fibrils into the brains of P301L mutant tau transgenic mice caused fivefold increases in the numbers of NFTs in cell bodies within the amygdala from where neurons project to the injection sites. Gallyas silver impregnation identified NFTs that contained tau phosphorylated at serine 212/threonine 214 and serine 422. NFTs were composed of twisted filaments and occurred in 6-month-old mice as early as 18 days after Abeta42 injections. Our data support the hypothesis that Abeta42 fibrils can accelerate NFT formation in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gotz, J -- Chen, F -- van Dorpe, J -- Nitsch, R M -- New York, N.Y. -- Science. 2001 Aug 24;293(5534):1491-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Psychiatry Research, University of Zurich, August Forel Strasse 1, 8008 Zurich, Switzerland. goetz@bli.unizh.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11520988" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Aged, 80 and over ; Alzheimer Disease/metabolism/*pathology ; Amygdala/*pathology ; Amyloid beta-Peptides/administration & dosage/*metabolism ; Animals ; Brain/*pathology ; Epitopes ; Female ; Fluorescent Antibody Technique ; Humans ; Male ; Mice ; Mice, Transgenic ; Microscopy, Immunoelectron ; Mutation ; Neurofibrillary Tangles/*metabolism/pathology ; Peptide Fragments/administration & dosage/*metabolism ; Phosphorylation ; Plaque, Amyloid/*metabolism/pathology ; Protein Conformation ; Protein Isoforms ; Sex Characteristics ; tau Proteins/chemistry/genetics/immunology/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Reversal of obesity- and diet-induced insulin resistance with salicylates or targeted disruption of Ikkbeta (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-05
    Description: We show that high doses of salicylates reverse hyperglycemia, hyperinsulinemia, and dyslipidemia in obese rodents by sensitizing insulin signaling. Activation or overexpression of the IkappaB kinase beta (IKKbeta) attenuated insulin signaling in cultured cells, whereas IKKbeta inhibition reversed insulin resistance. Thus, IKKbeta, rather than the cyclooxygenases, appears to be the relevant molecular target. Heterozygous deletion (Ikkbeta+/-) protected against the development of insulin resistance during high-fat feeding and in obese Lep(ob/ob) mice. These findings implicate an inflammatory process in the pathogenesis of insulin resistance in obesity and type 2 diabetes mellitus and identify the IKKbeta pathway as a target for insulin sensitization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yuan, M -- Konstantopoulos, N -- Lee, J -- Hansen, L -- Li, Z W -- Karin, M -- Shoelson, S E -- AI43477/AI/NIAID NIH HHS/ -- DK45493/DK/NIDDK NIH HHS/ -- DK51729/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2001 Aug 31;293(5535):1673-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, MA 02215, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11533494" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Inflammatory Agents, Non-Steroidal/pharmacology ; Aspirin/administration & dosage/*pharmacology ; Blood Glucose/metabolism ; Cell Line ; Dietary Fats/*administration & dosage ; Gene Deletion ; Gene Targeting ; Glucose Tolerance Test ; I-kappa B Kinase ; Insulin/administration & dosage/blood/*metabolism/pharmacology ; *Insulin Resistance ; Lipids/blood ; Liver/metabolism ; Male ; Mice ; Mice, Obese ; Muscles/metabolism ; Obesity/metabolism/*physiopathology ; Phosphorylation ; Prostaglandin-Endoperoxide Synthases/genetics/metabolism ; Protein-Serine-Threonine Kinases/antagonists & inhibitors/genetics/*metabolism ; Rats ; Rats, Zucker ; Receptor, Insulin/metabolism ; Signal Transduction ; Sodium Salicylate/administration & dosage/*pharmacology ; Tumor Necrosis Factor-alpha/pharmacology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 183
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    A role for thrombin receptor signaling in endothelial cells during embryonic development (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-05
    Description: The coagulation protease thrombin triggers fibrin formation, platelet activation, and other cellular responses at sites of tissue injury. We report a role for PAR1, a protease-activated G protein-coupled receptor for thrombin, in embryonic development. Approximately half of Par1-/- mouse embryos died at midgestation with bleeding from multiple sites. PAR1 is expressed in endothelial cells, and a PAR1 transgene driven by an endothelial-specific promoter prevented death of Par1-/- embryos. Our results suggest that the coagulation cascade and PAR1 modulate endothelial cell function in developing blood vessels and that thrombin's actions on endothelial cells-rather than on platelets, mesenchymal cells, or fibrinogen-contribute to vascular development and hemostasis in the mouse embryo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Griffin, C T -- Srinivasan, Y -- Zheng, Y W -- Huang, W -- Coughlin, S R -- HL44907/HL/NHLBI NIH HHS/ -- HL65590/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2001 Aug 31;293(5535):1666-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cardiovascular Research Institute, University of California at San Francisco (UCSF), San Francisco, California 94143.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11533492" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Coagulation ; Blood Coagulation Factors/physiology ; Blood Vessels/*embryology/metabolism ; Calcium/metabolism ; Crosses, Genetic ; *Embryonic and Fetal Development ; Endocardium/embryology/metabolism ; Endothelium, Vascular/cytology/*embryology/metabolism ; Factor V/genetics/physiology ; Female ; Fibrinogen/genetics/physiology ; Fibroblasts/metabolism ; Hemorrhage/embryology ; Hemostasis ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Inbred Strains ; Mice, Transgenic ; *Neovascularization, Physiologic ; Phenotype ; Prothrombin/genetics/physiology ; Receptor, PAR-1 ; Receptors, Thrombin/deficiency/genetics/*physiology ; *Signal Transduction ; Thrombin/physiology ; Thromboplastin/genetics/physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    A p53 amino-terminal nuclear export signal inhibited by DNA damage-induced phosphorylation (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-09
    Description: The p53 protein is present in low amounts in normally growing cells and is activated in response to physiological insults. MDM2 regulates p53 either through inhibiting p53's transactivating function in the nucleus or by targeting p53 degradation in the cytoplasm. We identified a previously unknown nuclear export signal (NES) in the amino terminus of p53, spanning residues 11 to 27 and containing two serine residues phosphorylated after DNA damage, which was required for p53 nuclear export in colloboration with the carboxyl-terminal NES. Serine-15-phosphorylated p53 induced by ultraviolet irradiation was not exported. Thus, DNA damage-induced phosphorylation may achieve optimal p53 activation by inhibiting both MDM2 binding to, and the nuclear export of, p53.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Y -- Xiong, Y -- CA65572/CA/NCI NIH HHS/ -- K01 CA087580/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2001 Jun 8;292(5523):1910-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lineberger Comprehensive Cancer Center, Department of Biochemistry and Biophysics, and Program in Molecular Biology and Biotechnology, University of North Carolina at Chapel Hill, NC 27599-7295, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11397945" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Amino Acid Sequence ; Animals ; Cell Fusion ; Cell Line ; Cell Nucleus/*metabolism ; Cells, Cultured ; Cytoplasm/metabolism ; *DNA Damage ; Mice ; Molecular Sequence Data ; Mutation ; *Nuclear Proteins ; Phosphorylation ; Phosphoserine/metabolism ; *Protein Sorting Signals ; Protein Structure, Tertiary ; Proteins/genetics/metabolism ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-mdm2 ; Recombinant Fusion Proteins/metabolism ; Transfection ; Tumor Suppressor Protein p14ARF ; Tumor Suppressor Protein p53/*chemistry/genetics/*metabolism ; Ubiquitins/metabolism ; Ultraviolet Rays
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Positive regulation of T cell activation and integrin adhesion by the adapter Fyb/Slap (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-22
    Description: The molecular adapter Fyb/Slap regulates signaling downstream of the T cell receptor (TCR), but whether it plays a positive or negative role is controversial. We demonstrate that Fyb/Slap-deficient T cells exhibit defective proliferation and cytokine production in response to TCR stimulation. Fyb/Slap is also required in vivo for T cell-dependent immune responses. Functionally, Fyb/Slap has no apparent role in the activation of known TCR signaling pathways, F-actin polymerization, or TCR clustering. Rather, Fyb/Slap regulates TCR-induced integrin clustering and adhesion. Thus, Fyb/Slap is the first molecular adapter to be identified that couples TCR stimulation to the avidity modulation of integrins governing T cell adhesion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Griffiths, E K -- Krawczyk, C -- Kong, Y Y -- Raab, M -- Hyduk, S J -- Bouchard, D -- Chan, V S -- Kozieradzki, I -- Oliveira-Dos-Santos, A J -- Wakeham, A -- Ohashi, P S -- Cybulsky, M I -- Rudd, C E -- Penninger, J M -- New York, N.Y. -- Science. 2001 Sep 21;293(5538):2260-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Amgen Institute, 620 University Avenue, Toronto, Ontario, Canada M5G 2C1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11567140" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; *Adaptor Proteins, Signal Transducing ; Animals ; Antigens, CD/metabolism ; Antigens, CD3/metabolism ; Antigens, Differentiation, T-Lymphocyte/metabolism ; B-Lymphocytes/immunology ; Carrier Proteins/genetics/*physiology ; Cell Adhesion ; Cell Adhesion Molecules/metabolism ; Chimera ; Gene Targeting ; Humans ; Immunization ; Immunoglobulin G/biosynthesis ; Integrins/*metabolism ; Intercellular Adhesion Molecule-1/metabolism ; Interferon-gamma/biosynthesis ; Interleukin-2/biosynthesis/pharmacology ; Lectins, C-Type ; *Lymphocyte Activation ; Lymphocyte Function-Associated Antigen-1/metabolism ; Mice ; Phosphoproteins/genetics/*physiology ; Receptors, Antigen, T-Cell/immunology/metabolism ; Receptors, Interleukin-2/metabolism ; Recombinant Proteins/metabolism ; Signal Transduction ; T-Lymphocytes/immunology/metabolism/*physiology
    Print ISSN: 0036-8075
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  • 186
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    Modulation of blood fluke development in the liver by hepatic CD4+ lymphocytes (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-10
    Description: We have identified an alternate developmental pathway in the life cycle of the trematode pathogen Schistosoma mansoni. This pathway is used in immunodeficient hosts in which the parasite fails to receive appropriate signals from the host immune system. Helminth development is altered at an early stage during infection, resulting in the appearance of attenuated forms that prolong survival of host and parasite. Hepatic CD4+ T lymphocyte populations are an integral component of the immune signal recognized by the parasite.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davies, S J -- Grogan, J L -- Blank, R B -- Lim, K C -- Locksley, R M -- McKerrow, J H -- AI10424/AI/NIAID NIH HHS/ -- F32 AI010424/AI/NIAID NIH HHS/ -- F32 AI010424-02/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2001 Nov 9;294(5545):1358-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Tropical Disease Research Unit, Department of Pathology, Veterans Affairs Medical Center, Howard Hughes Medical Institute, Department of Microbiology and Immunology, University of California San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11701932" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CD4-Positive T-Lymphocytes/*immunology ; Genes, MHC Class II ; Liver/immunology/*parasitology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Receptors, Antigen, T-Cell, alpha-beta/genetics/immunology ; Schistosoma japonicum/anatomy & histology/growth & development ; Schistosoma mansoni/*growth & development/immunology ; Schistosomiasis mansoni/*immunology/*parasitology ; T-Lymphocyte Subsets/immunology ; beta 2-Microglobulin/genetics/physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 187
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    Prevention of chemotherapy-induced alopecia in rats by CDK inhibitors (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-01-06
    Description: Most traditional cytotoxic anticancer agents ablate the rapidly dividing epithelium of the hair follicle and induce alopecia (hair loss). Inhibition of cyclin-dependent kinase 2 (CDK2), a positive regulator of eukaryotic cell cycle progression, may represent a therapeutic strategy for prevention of chemotherapy-induced alopecia (CIA) by arresting the cell cycle and reducing the sensitivity of the epithelium to many cell cycle-active antitumor agents. Potent small-molecule inhibitors of CDK2 were developed using structure-based methods. Topical application of these compounds in a neonatal rat model of CIA reduced hair loss at the site of application in 33 to 50% of the animals. Thus, inhibition of CDK2 represents a potentially useful approach for the prevention of CIA in cancer patients.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, S T -- Benson, B G -- Bramson, H N -- Chapman, D E -- Dickerson, S H -- Dold, K M -- Eberwein, D J -- Edelstein, M -- Frye, S V -- Gampe Jr, R T -- Griffin, R J -- Harris, P A -- Hassell, A M -- Holmes, W D -- Hunter, R N -- Knick, V B -- Lackey, K -- Lovejoy, B -- Luzzio, M J -- Murray, D -- Parker, P -- Rocque, W J -- Shewchuk, L -- Veal, J M -- Walker, D H -- Kuyper, L F -- New York, N.Y. -- Science. 2001 Jan 5;291(5501):134-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cancer Biology, Glaxo Wellcome Research and Development, Research Triangle Park, NC 27709, USA. std41085@glaxowellcome.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11141566" target="_blank"〉PubMed〈/a〉
    Keywords: Alopecia/*chemically induced/*prevention & control ; Animals ; Animals, Newborn ; Antineoplastic Agents/*toxicity ; Antineoplastic Combined Chemotherapy Protocols/toxicity ; Apoptosis/drug effects ; *CDC2-CDC28 Kinases ; Cell Cycle/drug effects ; Cell Line ; Cyclin-Dependent Kinase 2 ; Cyclin-Dependent Kinases/*antagonists & inhibitors/metabolism ; Cyclophosphamide/toxicity ; Cytoprotection/drug effects ; DNA/biosynthesis ; Doxorubicin/toxicity ; Drug Design ; Enzyme Inhibitors/chemical synthesis/chemistry/*pharmacology ; Epithelium/drug effects ; Etoposide/toxicity ; Hair Follicle/cytology/*drug effects ; Humans ; Indoles/chemical synthesis/chemistry/*pharmacology ; Mice ; Mice, SCID ; Phosphorylation ; Protein-Serine-Threonine Kinases/*antagonists & inhibitors/metabolism ; Rats ; Retinoblastoma Protein/metabolism ; Scalp/transplantation ; Sulfonamides/chemical synthesis/chemistry/*pharmacology ; Transplantation, Heterologous
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  • 188
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    Negative regulation of neural stem/progenitor cell proliferation by the Pten tumor suppressor gene in vivo (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-03
    Description: The mechanisms controlling neural stem cell proliferation are poorly understood. Here we demonstrate that the PTEN tumor suppressor plays an important role in regulating neural stem/progenitor cells in vivo and in vitro. Mice lacking PTEN exhibited enlarged, histoarchitecturally abnormal brains, which resulted from increased cell proliferation, decreased cell death, and enlarged cell size. Neurosphere cultures revealed a greater proliferation capacity for tripotent Pten-/- central nervous system stem/progenitor cells, which can be attributed, at least in part, to a shortened cell cycle. However, cell fate commitments of the progenitors were largely undisturbed. Our results suggest that PTEN negatively regulates neural stem cell proliferation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Groszer, M -- Erickson, R -- Scripture-Adams, D D -- Lesche, R -- Trumpp, A -- Zack, J A -- Kornblum, H I -- Liu, X -- Wu, H -- MH062800-01/MH/NIMH NIH HHS/ -- NS38489/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2001 Dec 7;294(5549):2186-9. Epub 2001 Nov 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Molecular and Medical Pharmacology, UCLA School of Medicine, Los Angeles, CA 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11691952" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Astrocytes/cytology ; Brain/abnormalities/*cytology/embryology ; Cell Count ; Cell Differentiation ; *Cell Division ; Cell Lineage ; Cell Size ; Cells, Cultured ; Female ; Flow Cytometry ; Fluoresceins/metabolism ; Gene Deletion ; Intermediate Filament Proteins/metabolism ; Male ; Mice ; Mice, Knockout ; *Nerve Tissue Proteins ; Nestin ; Neurons/*cytology ; PTEN Phosphohydrolase ; Phosphoric Monoester Hydrolases/*genetics/*physiology ; Stem Cells/*cytology ; Succinimides/metabolism ; Tumor Suppressor Proteins/*genetics/*physiology
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    Liver organogenesis promoted by endothelial cells prior to vascular function (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-29
    Description: The embryonic role of endothelial cells and nascent vessels in promoting organogenesis, prior to vascular function, is unclear. We find that early endothelial cells in mouse embryos surround newly specified hepatic endoderm and delimit the mesenchymal domain into which the liver bud grows. In flk-1 mutant embryos, which lack endothelial cells, hepatic specification occurs, but liver morphogenesis fails prior to mesenchyme invasion. We developed an embryo tissue explant system that permits liver bud vasculogenesis and show that in the absence of endothelial cells, or when the latter are inhibited, there is a selective defect in hepatic outgrowth. We conclude that vasculogenic endothelial cells and nascent vessels are critical for the earliest stages of organogenesis, prior to blood vessel function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Matsumoto, K -- Yoshitomi, H -- Rossant, J -- Zaret, K S -- CA06297/CA/NCI NIH HHS/ -- GM36477/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Oct 19;294(5542):559-63. Epub 2001 Sep 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cell and Developmental Biology Program, Fox Chase Cancer Center, 7701 Burholme Avenue, Philadelphia, PA 19111, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11577199" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Vessels/cytology/embryology/physiology ; Culture Techniques ; *Embryonic Induction ; Endoderm/*physiology ; Endothelium, Vascular/cytology/embryology/*physiology ; Female ; Hepatocyte Growth Factor/antagonists & inhibitors/metabolism/pharmacology ; Hepatocytes/physiology ; Liver/blood supply/cytology/drug effects/*embryology ; Male ; Mesoderm/physiology ; Mice ; Mice, Inbred C3H ; *Mitogens ; Morphogenesis ; Mutation ; Neovascularization, Physiologic ; Receptor Protein-Tyrosine Kinases/genetics/physiology ; Receptors, Growth Factor/genetics/physiology ; Receptors, Vascular Endothelial Growth Factor ; Signal Transduction/drug effects
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    Success and virulence in Toxoplasma as the result of sexual recombination between two distinct ancestries (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-10-06
    Description: Toxoplasma gondii is a common human pathogen causing serious, even fatal, disease in the developing fetus and in immunocompromised patients. Despite its ability to reproduce sexually and its broad geographic and host range, Toxoplasma has a clonal population structure comprised principally of three lines. We have analyzed 15 polymorphic loci in the archetypal type I, II, and III strains and found that polymorphism was limited to, at most, two rather than three allelic classes and no polymorphism was detected between alleles in strains of a given type. Multilocus analysis of 10 nonarchetypal isolates likewise clustered the vast majority of alleles into the same two distinct ancestries. These data strongly suggest that the currently predominant genotypes exist as a pandemic outbreak from a genetic mixing of two discrete ancestral lines. To determine if such mixing could lead to the extreme virulence observed for some strains, we examined the F(1) progeny of a cross between a type II and III strain, both of which are relatively avirulent in mice. Among the progeny were recombinants that were at least 3 logs more virulent than either parent. Thus, sexual recombination, by combining polymorphisms in two distinct and competing clonal lines, can be a powerful force driving the natural evolution of virulence in this highly successful pathogen.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grigg, M E -- Bonnefoy, S -- Hehl, A B -- Suzuki, Y -- Boothroyd, J C -- AI04717/AI/NIAID NIH HHS/ -- AI21423/AI/NIAID NIH HHS/ -- AI41014/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2001 Oct 5;294(5540):161-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305-5124, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11588262" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Base Sequence ; Crosses, Genetic ; Genes, Protozoan ; Genetic Variation ; Genotype ; Humans ; Introns ; Lethal Dose 50 ; Mice ; Mice, Inbred CBA ; Molecular Sequence Data ; Polymorphism, Genetic ; Polymorphism, Single Nucleotide ; *Recombination, Genetic ; Toxoplasma/classification/*genetics/isolation & purification/*pathogenicity ; Toxoplasmosis/*parasitology ; Toxoplasmosis, Animal/*parasitology ; Virulence/genetics
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    Neuroscience. A kinase to dampen the effects of cocaine? (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gupta, A -- Tsai, L H -- New York, N.Y. -- Science. 2001 Apr 13;292(5515):236-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Harvard Medical School and Howard Hughes Medical Institute, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11305318" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cocaine/*pharmacology ; Corpus Striatum/*drug effects/metabolism ; Cyclic AMP-Dependent Protein Kinases/antagonists & inhibitors/metabolism ; Cyclin-Dependent Kinase 5 ; Cyclin-Dependent Kinases/antagonists & inhibitors/genetics/*metabolism ; Dopamine/metabolism ; Dopamine Uptake Inhibitors/*pharmacology ; Dopamine and cAMP-Regulated Phosphoprotein 32 ; Mice ; Mice, Knockout ; Motor Activity/drug effects ; Nerve Tissue Proteins/metabolism ; Neurons/metabolism ; Phosphoprotein Phosphatases/antagonists & inhibitors/metabolism ; Phosphoproteins/metabolism ; Phosphorylation ; Proto-Oncogene Proteins c-fos/metabolism ; Rats ; Signal Transduction
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    Preferential localization of effector memory cells in nonlymphoid tissue (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-27
    Description: Many intracellular pathogens infect a broad range of host tissues, but the importance of T cells for immunity in these sites is unclear because most of our understanding of antimicrobial T cell responses comes from analyses of lymphoid tissue. Here, we show that in response to viral or bacterial infection, antigen-specific CD8 T cells migrated to nonlymphoid tissues and were present as long-lived memory cells. Strikingly, CD8 memory T cells isolated from nonlymphoid tissues exhibited effector levels of lytic activity directly ex vivo, in contrast to their splenic counterparts. These results point to the existence of a population of extralymphoid effector memory T cells poised for immediate response to infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Masopust, D -- Vezys, V -- Marzo, A L -- Lefrancois, L -- AI41576/AI/NIAID NIH HHS/ -- DK45260/DK/NIDDK NIH HHS/ -- T32-AI07080/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2001 Mar 23;291(5512):2413-7. Epub 2001 Mar 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Immunology, Department of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11264538" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CD8-Positive T-Lymphocytes/*immunology ; Cell Movement ; Cells, Cultured ; Flow Cytometry ; H-2 Antigens/immunology ; *Immunologic Memory ; Intestine, Small/immunology ; Listeria monocytogenes/genetics/immunology ; Listeriosis/*immunology ; Liver/immunology ; Lung/immunology ; Lymphocyte Activation ; Lymphoid Tissue/immunology ; Mice ; Mice, Inbred C57BL ; Ovalbumin/immunology ; Phenotype ; Rhabdoviridae Infections/*immunology ; T-Lymphocyte Subsets/*immunology ; Vesicular stomatitis Indiana virus/immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 193
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    Binding of GGA2 to the lysosomal enzyme sorting motif of the mannose 6-phosphate receptor (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-02
    Description: The GGAs are a multidomain protein family implicated in protein trafficking between the Golgi and endosomes. Here, the VHS domain of GGA2 was shown to bind to the acidic cluster-dileucine motif in the cytoplasmic tail of the cation-independent mannose 6-phosphate receptor (CI-MPR). Receptors with mutations in this motif were defective in lysosomal enzyme sorting. The hinge domain of GGA2 bound clathrin, suggesting that GGA2 could be a link between cargo molecules and clathrin-coated vesicle assembly. Thus, GGA2 binding to the CI-MPR is important for lysosomal enzyme targeting.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhu, Y -- Doray, B -- Poussu, A -- Lehto, V P -- Kornfeld, S -- R01 CA-08759/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2001 Jun 1;292(5522):1716-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Internal Medicine, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11387476" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Vesicular Transport ; Amino Acid Motifs ; Amino Acid Sequence ; Animals ; *Carrier Proteins ; Cations ; Clathrin/metabolism ; Dipeptides/chemistry/metabolism ; L Cells (Cell Line) ; Lysosomes/*enzymology ; Mice ; Molecular Sequence Data ; Mutation ; Protein Sorting Signals ; Protein Structure, Tertiary ; *Protein Transport ; Proteins/chemistry/genetics/*metabolism ; Rats ; Receptor, IGF Type 2/*chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/chemistry/metabolism ; Solubility ; Transcription Factor AP-1/metabolism ; Transport Vesicles/metabolism ; Two-Hybrid System Techniques ; trans-Golgi Network/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 194
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    Loss of huntingtin-mediated BDNF gene transcription in Huntington's disease (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-16
    Description: Huntingtin is a 350-kilodalton protein of unknown function that is mutated in Huntington's disease (HD), a neurodegenerative disorder. The mutant protein is presumed to acquire a toxic gain of function that is detrimental to striatal neurons in the brain. However, loss of a beneficial activity of wild-type huntingtin may also cause the death of striatal neurons. Here we demonstrate that wild-type huntingtin up-regulates transcription of brain-derived neurotrophic factor (BDNF), a pro-survival factor produced by cortical neurons that is necessary for survival of striatal neurons in the brain. We show that this beneficial activity of huntingtin is lost when the protein becomes mutated, resulting in decreased production of cortical BDNF. This leads to insufficient neurotrophic support for striatal neurons, which then die. Restoring wild-type huntingtin activity and increasing BDNF production may be therapeutic approaches for treating HD.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zuccato, C -- Ciammola, A -- Rigamonti, D -- Leavitt, B R -- Goffredo, D -- Conti, L -- MacDonald, M E -- Friedlander, R M -- Silani, V -- Hayden, M R -- Timmusk, T -- Sipione, S -- Cattaneo, E -- E.0840/Telethon/Italy -- New York, N.Y. -- Science. 2001 Jul 20;293(5529):493-8. Epub 2001 Jun 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacological Sciences, University of Milano, Via Balzaretti 9, 20133 Milano, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11408619" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Apoptosis ; Brain-Derived Neurotrophic Factor/biosynthesis/*genetics/metabolism ; Cell Survival ; Cells, Cultured ; Cerebral Cortex/cytology/*metabolism ; Corpus Striatum/cytology/*metabolism/pathology ; Exons ; Hippocampus/cytology/metabolism/pathology ; Humans ; Huntington Disease/*genetics/metabolism/pathology ; Mice ; Mice, Transgenic ; Mutation ; Nerve Degeneration ; Nerve Growth Factors/genetics/metabolism ; Nerve Tissue Proteins/genetics/*physiology ; Neurons/*metabolism/pathology ; Nuclear Proteins/genetics/*physiology ; Promoter Regions, Genetic ; Transcription, Genetic ; Transfection
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 195
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    Obesity research. Pot-bellied mice point to obesity enzyme (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gura, T -- New York, N.Y. -- Science. 2001 Dec 7;294(5549):2071-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11739926" target="_blank"〉PubMed〈/a〉
    Keywords: 11-beta-Hydroxysteroid Dehydrogenase Type 2 ; Abdomen ; Adipose Tissue/*enzymology/metabolism ; Animals ; Body Composition ; Diabetes Mellitus/enzymology/metabolism ; Enzyme Inhibitors/pharmacology ; Humans ; Hydrocortisone/blood/*metabolism ; Hydroxysteroid Dehydrogenases/antagonists & inhibitors/genetics/*metabolism ; Hypoglycemic Agents/pharmacology ; Male ; Metabolic Syndrome X ; Mice ; Mice, Transgenic ; Obesity/*enzymology/genetics/metabolism ; Skin
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 196
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    BAFF-R, a newly identified TNF receptor that specifically interacts with BAFF (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-18
    Description: B cell homeostasis has been shown to critically depend on BAFF, the B cell activation factor from the tumor necrosis factor (TNF) family. Although BAFF is already known to bind two receptors, BCMA and TACI, we have identified a third receptor for BAFF that we have termed BAFF-R. BAFF-R binding appears to be highly specific for BAFF, suggesting a unique role for this ligand-receptor interaction. Consistent with this, the BAFF-R locus is disrupted in A/WySnJ mice, which display a B cell phenotype qualitatively similar to that of the BAFF-deficient mice. Thus, BAFF-R appears to be the principal receptor for BAFF-mediated mature B cell survival.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thompson, J S -- Bixler, S A -- Qian, F -- Vora, K -- Scott, M L -- Cachero, T G -- Hession, C -- Schneider, P -- Sizing, I D -- Mullen, C -- Strauch, K -- Zafari, M -- Benjamin, C D -- Tschopp, J -- Browning, J L -- Ambrose, C -- New York, N.Y. -- Science. 2001 Sep 14;293(5537):2108-11. Epub 2001 Aug 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biogen, 12 Cambridge Center, Cambridge, MA 02142, USA., The Institute of Biochemistry, University of Lausanne, CH-1066, Epalinges, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11509692" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; B-Cell Activating Factor ; B-Cell Activation Factor Receptor ; B-Cell Maturation Antigen ; B-Lymphocytes/immunology/metabolism/*physiology ; Cell Line ; Chromosome Mapping ; Chromosomes, Human, Pair 22 ; Cloning, Molecular ; Homeostasis ; Humans ; Ligands ; Lymphoid Tissue/metabolism ; Male ; Membrane Proteins/*metabolism ; Mice ; Mice, Inbred A ; Mice, Inbred C57BL ; Molecular Sequence Data ; RNA, Messenger/chemistry/genetics/metabolism ; Receptors, Tumor Necrosis Factor/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Transfection ; Transmembrane Activator and CAML Interactor Protein ; Tumor Necrosis Factor-alpha/*metabolism
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  • 197
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    Virus-assisted mapping of neural inputs to a feeding center in the hypothalamus (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-03
    Description: We report the development of a pseudorabies virus that can be used for retrograde tracing from selected neurons. This virus encodes a green fluorescent protein marker and replicates only in neurons that express the Cre recombinase and in neurons in synaptic contact with the originally infected cells. The virus was injected into the arcuate nucleus of mice that express Cre only in those neurons that express neuropeptide Y or the leptin receptor. Sectioning of the brains revealed that these neurons receive inputs from neurons in other regions of the hypothalamus, as well as the amygdala, cortex, and other brain regions. These data suggest that higher cortical centers modulate leptin signaling in the hypothalamus. This method of neural tracing may prove useful in studies of other complex neural circuits.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DeFalco, J -- Tomishima, M -- Liu, H -- Zhao, C -- Cai, X -- Marth, J D -- Enquist, L -- Friedman, J M -- DK48247/DK/NIDDK NIH HHS/ -- R01133506/PHS HHS/ -- R01DK41096/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2001 Mar 30;291(5513):2608-13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, The Rockefeller University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11283374" target="_blank"〉PubMed〈/a〉
    Keywords: Afferent Pathways ; Animals ; Arcuate Nucleus of Hypothalamus/cytology/*physiology/virology ; Brain/cytology/*physiology/virology ; Brain Mapping ; Carrier Proteins/genetics/metabolism ; Chromosomes, Artificial, Bacterial ; *Eating ; Gene Expression ; Green Fluorescent Proteins ; Herpesvirus 1, Suid/*genetics/physiology ; Hypothalamus/cytology/*physiology/virology ; Integrases/genetics/metabolism ; Luminescent Proteins/genetics/metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Neurons/*metabolism/virology ; Neuropeptide Y/genetics/metabolism ; *Receptors, Cell Surface ; Receptors, Leptin ; Recombinant Fusion Proteins/metabolism ; Recombination, Genetic ; *Viral Proteins ; Virus Replication ; tau Proteins/genetics/metabolism
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  • 198
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    Biomedicine. Tauists and beta-aptists united--well almost! (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, V M -- New York, N.Y. -- Science. 2001 Aug 24;293(5534):1446-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Neurodegenerative Disease Research, Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA 19104-4283, USA. vmylee@mail.med.upenn.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11520974" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/drug therapy/metabolism/*pathology ; Amyloid beta-Peptides/administration & dosage/genetics/*metabolism/pharmacology ; Amyloid beta-Protein Precursor/genetics/metabolism ; Animals ; Brain/metabolism/*pathology ; Disease Models, Animal ; Humans ; Mice ; Mice, Transgenic ; Mutation ; Nerve Degeneration ; Neurofibrillary Tangles/metabolism/*pathology ; Peptide Fragments/administration & dosage/pharmacology ; Plaque, Amyloid/metabolism/*pathology ; tau Proteins/genetics/*metabolism
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 199
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    A transgenic model for listeriosis: role of internalin in crossing the intestinal barrier (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-02
    Description: Listeria monocytogenes is responsible for severe food-borne infections, but the mechanisms by which bacteria cross the intestinal barrier are unknown. Listeria monocytogenes expresses a surface protein, internalin, that interacts with a host receptor, E-cadherin, to promote entry into human epithelial cells. Murine E-cadherin, in contrast to guinea pig E-cadherin, does not interact with internalin, excluding the mouse as a model for addressing internalin function in vivo. In guinea pigs and transgenic mice expressing human E-cadherin, internalin was found to mediate invasion of enterocytes and crossing of the intestinal barrier. These results illustrate how relevant animal models for human infections can be generated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lecuit, M -- Vandormael-Pournin, S -- Lefort, J -- Huerre, M -- Gounon, P -- Dupuy, C -- Babinet, C -- Cossart, P -- New York, N.Y. -- Science. 2001 Jun 1;292(5522):1722-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Unite des Interactions Bacteries-Cellules, Station Centrale de Microscopie Electronique, Institut Pasteur, 75724 Paris cedex 15, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11387478" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Proteins/*metabolism ; Bacterial Translocation ; Cadherins/genetics/*metabolism ; Carrier Proteins/genetics ; Colony Count, Microbial ; *Disease Models, Animal ; Enterocytes/metabolism/*microbiology ; Fatty Acid-Binding Proteins ; Guinea Pigs ; Humans ; Intestinal Mucosa/microbiology/pathology ; Intestine, Small/microbiology/pathology ; Listeria monocytogenes/growth & development/metabolism/*pathogenicity ; Listeriosis/*microbiology/pathology ; Liver/microbiology/pathology ; Lymph Nodes/microbiology/pathology ; Male ; Mice ; Mice, Transgenic ; *Neoplasm Proteins ; *Nerve Tissue Proteins ; Promoter Regions, Genetic ; Spleen/microbiology/pathology ; Transgenes ; *Tumor Suppressor Proteins ; Virulence
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 200
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    Bmf: a proapoptotic BH3-only protein regulated by interaction with the myosin V actin motor complex, activated by anoikis (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-08
    Description: Bcl-2 family members bearing only the BH3 domain are essential inducers of apoptosis. We identified a BH3-only protein, Bmf, and show that its BH3 domain is required both for binding to prosurvival Bcl-2 proteins and for triggering apoptosis. In healthy cells, Bmf is sequestered to myosin V motors by association with dynein light chain 2. Certain damage signals, such as loss of cell attachment (anoikis), unleash Bmf, allowing it to translocate and bind prosurvival Bcl-2 proteins. Thus, at least two mammalian BH3-only proteins, Bmf and Bim, function to sense intracellular damage by their localization to distinct cytoskeletal structures.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Puthalakath, H -- Villunger, A -- O'Reilly, L A -- Beaumont, J G -- Coultas, L -- Cheney, R E -- Huang, D C -- Strasser, A -- CA 80188/CA/NCI NIH HHS/ -- R29 DC003299/DC/NIDCD NIH HHS/ -- New York, N.Y. -- Science. 2001 Sep 7;293(5536):1829-32.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Walter and Eliza Hall Institute of Medical Research, Melbourne, P.O. Royal Melbourne Hospital, 3050 VIC, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11546872" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; Animals ; *Anoikis ; Apoptosis Regulatory Proteins ; Calmodulin-Binding Proteins/*metabolism ; Carrier Proteins/*chemistry/genetics/*metabolism ; Cell Line ; Cytoskeleton/metabolism ; *Drosophila Proteins ; Dyneins ; Gene Expression Profiling ; Humans ; *Membrane Proteins ; Mice ; Molecular Motor Proteins/*metabolism ; Molecular Sequence Data ; Mutation ; Myeloid Cell Leukemia Sequence 1 Protein ; *Myosin Type V ; Neoplasm Proteins/genetics/metabolism ; Nerve Tissue Proteins/*metabolism ; Protein Binding ; Protein Structure, Tertiary ; Protein Transport ; *Proto-Oncogene Proteins ; Proto-Oncogene Proteins c-bcl-2/chemistry/genetics/metabolism ; RNA, Messenger/analysis/genetics ; Transfection ; Two-Hybrid System Techniques
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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