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  • Articles  (59)
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  • Articles  (59)
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  • Latest Papers from Table of Contents or Articles in Press  (59)
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  • Blackwell Publishing Ltd
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  • 1
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-01-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Normile, D -- New York, N.Y. -- Science. 1998 Dec 11;282(5396):1975-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9874644" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Husbandry/*methods ; Animals ; Blastocyst ; Cattle/embryology/*genetics ; Cell Differentiation ; Cells, Cultured ; *Cloning, Organism ; Embryo Transfer/veterinary ; Fallopian Tubes/cytology ; Female ; Japan ; *Nuclear Transfer Techniques ; Oocytes ; Ovarian Follicle/cytology ; Pregnancy
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-05-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Service, R F -- New York, N.Y. -- Science. 1999 Apr 23;284(5414):578-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10328734" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Electric Stimulation ; Electrodes ; Electrodes, Implanted ; *Electronics ; Electrophysiology ; Humans ; Nerve Net/*physiology ; Nervous System Diseases/*therapy ; Neurons/*physiology ; Rats ; Silicon ; *Transistors, Electronic
    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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  • 3
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-01-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wickelgren, I -- New York, N.Y. -- Science. 1999 Jan 1;283(5398):14-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9917254" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/metabolism ; Cells, Cultured ; Dimerization ; Drug Design ; Humans ; Neurons/*metabolism ; Potassium Channels/metabolism ; Rats ; Receptors, GABA-B/*chemistry/*metabolism ; Signal Transduction ; gamma-Aminobutyric Acid/metabolism
    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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  • 4
    Publication Date: 1999-06-12
    Description: To monitor changes in alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionate (AMPA) receptor distribution in living neurons, the AMPA receptor subunit GluR1 was tagged with green fluorescent protein (GFP). This protein (GluR1-GFP) was functional and was transiently expressed in hippocampal CA1 neurons. In dendrites visualized with two-photon laser scanning microscopy or electron microscopy, most of the GluR1-GFP was intracellular, mimicking endogenous GluR1 distribution. Tetanic synaptic stimulation induced a rapid delivery of tagged receptors into dendritic spines as well as clusters in dendrites. These postsynaptic trafficking events required synaptic N-methyl-D-aspartate (NMDA) receptor activation and may contribute to the enhanced AMPA receptor-mediatedtransmission observed during long-term potentiation and activity-dependent synaptic maturation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shi, S H -- Hayashi, Y -- Petralia, R S -- Zaman, S H -- Wenthold, R J -- Svoboda, K -- Malinow, R -- New York, N.Y. -- Science. 1999 Jun 11;284(5421):1811-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10364548" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Dendrites/*metabolism/ultrastructure ; Electric Stimulation ; Hippocampus/cytology/physiology ; Humans ; Long-Term Potentiation ; *Neuronal Plasticity ; Neurons/*physiology ; Organ Culture Techniques ; Rats ; Receptor Aggregation ; Receptors, AMPA/*metabolism ; Receptors, N-Methyl-D-Aspartate/*physiology ; Recombinant Fusion Proteins/metabolism ; Synapses/metabolism/*physiology ; Synaptic Transmission ; Tetany
    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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  • 5
    Publication Date: 1999-11-05
    Description: Glutamatergic neurotransmission is controlled by presynaptic metabotropic glutamate receptors (mGluRs). A subdomain in the intracellular carboxyl-terminal tail of group III mGluRs binds calmodulin and heterotrimeric guanosine triphosphate-binding protein (G protein) betagamma subunits in a mutually exclusive manner. Mutations interfering with calmodulin binding and calmodulin antagonists inhibit G protein-mediated modulation of ionic currents by mGluR 7. Calmodulin antagonists also prevent inhibition of excitatory neurotransmission via presynaptic mGluRs. These results reveal a novel mechanism of presynaptic modulation in which Ca(2+)-calmodulin is required to release G protein betagamma subunits from the C-tail of group III mGluRs in order to mediate glutamatergic autoinhibition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Connor, V -- El Far, O -- Bofill-Cardona, E -- Nanoff, C -- Freissmuth, M -- Karschin, A -- Airas, J M -- Betz, H -- Boehm, S -- New York, N.Y. -- Science. 1999 Nov 5;286(5442):1180-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurochemistry, Max Planck Institute for Brain Research, Deutschordenstrasse 46, 60528 Frankfurt, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10550060" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcium/metabolism ; Calmodulin/antagonists & inhibitors/*metabolism ; Cells, Cultured ; Dimerization ; G Protein-Coupled Inwardly-Rectifying Potassium Channels ; GTP-Binding Proteins/*metabolism ; Glutamic Acid/*metabolism ; Hippocampus/cytology/metabolism ; Humans ; Mice ; Molecular Sequence Data ; Neurons/metabolism ; Potassium Channels/metabolism ; *Potassium Channels, Inwardly Rectifying ; Presynaptic Terminals/metabolism ; Propionates/pharmacology ; Rats ; Rats, Sprague-Dawley ; Receptors, Metabotropic Glutamate/antagonists & inhibitors/*metabolism ; Recombinant Fusion Proteins/metabolism ; Sesterterpenes ; Signal Transduction ; Swine ; *Synaptic Transmission ; Terpenes/pharmacology
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  • 6
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-04-24
    Description: Retroviral DNA integration is catalyzed by the viral protein integrase. Here, it is shown that DNA-dependent protein kinase (DNA-PK), a host cell protein, also participates in the reaction. DNA-PK-deficient murine scid cells infected with three different retroviruses showed a substantial reduction in retroviral DNA integration and died by apoptosis. Scid cell killing was not observed after infection with an integrase-defective virus, suggesting that abortive integration is the trigger for death in these DNA repair-deficient cells. These results suggest that the initial events in retroviral integration are detected as DNA damage by the host cell and that completion of the integration process requires the DNA-PK-mediated repair pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Daniel, R -- Katz, R A -- Skalka, A M -- AI40721/AI/NIAID NIH HHS/ -- AI40835/AI/NIAID NIH HHS/ -- CA71515/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1999 Apr 23;284(5414):644-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Cancer Research, Fox Chase Cancer Center, 7701 Burholme Avenue, Philadelphia, PA 19111, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10213687" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; CHO Cells ; Cell Survival ; Cells, Cultured ; Cricetinae ; DNA Damage ; *DNA Repair ; DNA, Viral/*genetics/metabolism ; DNA-Activated Protein Kinase ; *DNA-Binding Proteins ; Genetic Vectors ; HIV-1/genetics ; Integrases/genetics/metabolism ; Mice ; Mutation ; Protein-Serine-Threonine Kinases/*metabolism ; Retroviridae/*genetics/physiology ; *Virus Integration ; Virus Replication
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-02-05
    Description: Costimulation of both the CD3 and CD28 receptors is essential for T cell activation. Induction of adenosine 3',5'-monophosphate (cAMP)-specific phosphodiesterase-7 (PDE7) was found to be a consequence of such costimulation. Increased PDE7 in T cells correlated with decreased cAMP, increased interleukin-2 expression, and increased proliferation. Selectively reducing PDE7 expression with a PDE7 antisense oligonucleotide inhibited T cell proliferation; inhibition was reversed by blocking the cAMP signaling pathways that operate through cAMP-dependent protein kinase (PKA). Thus, PDE7 induction and consequent suppression of PKA activity is required for T cell activation, and inhibition of PDE7 could be an approach to treating T cell-dependent disorders.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, L -- Yee, C -- Beavo, J A -- DK21723/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1999 Feb 5;283(5403):848-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology and Molecular and Cellular Biology Program, Box 357280, University of Washington School of Medicine, Seattle, WA 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9933169" target="_blank"〉PubMed〈/a〉
    Keywords: 3',5'-Cyclic-AMP Phosphodiesterases/*biosynthesis/genetics/metabolism ; Antibodies ; Antigens, CD28/immunology/*physiology ; Antigens, CD3/immunology/*physiology ; CD4-Positive T-Lymphocytes/enzymology/immunology ; Cells, Cultured ; Cyclic AMP/metabolism ; Cyclic AMP-Dependent Protein Kinases/metabolism ; Cyclic Nucleotide Phosphodiesterases, Type 7 ; Enzyme Induction ; Humans ; Interleukin-2/biosynthesis ; Isoenzymes/*biosynthesis/genetics/metabolism ; *Lymphocyte Activation ; Oligonucleotides, Antisense/pharmacology ; RNA, Messenger/genetics/metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; T-Lymphocytes/*enzymology/*immunology/metabolism ; Tumor Cells, Cultured
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  • 8
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1999-03-12
    Description: A central question in immunology is the origin of long-lived T cell memory that confers protection against recurrent infection. The differentiation of naive T cell receptor transgenic CD8+ cells into effector cytotoxic T lymphocytes (CTLs) and memory CD8+ cells was studied. Memory CD8+ cells that were generated after strong antigenic stimulation were the progeny of cytotoxic effectors and retained antigen-specific cytolytic activity 10 weeks after adoptive transfer to antigen-free recipient mice. Thus, potential vaccines based on CTL memory will require the differentiation of naive cells into post-effector memory T cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Opferman, J T -- Ober, B T -- Ashton-Rickardt, P G -- 5T32 AI07090/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1999 Mar 12;283(5408):1745-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Committee on Immunology, Department of Pathology, Committee on Developmental Biology, The University of Chicago, Gwen Knapp Center for Lupus and Immunology Research, Chicago, IL 60637, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10073942" target="_blank"〉PubMed〈/a〉
    Keywords: Adoptive Transfer ; Animals ; Apoptosis ; CD8-Positive T-Lymphocytes/*cytology/*immunology ; Cell Differentiation ; Cell Division ; Cell Lineage ; Cells, Cultured ; Cytotoxicity, Immunologic ; Dose-Response Relationship, Immunologic ; H-Y Antigen/immunology ; *Immunologic Memory ; Lymphocyte Activation ; Membrane Glycoproteins/metabolism ; Mice ; Mice, Transgenic ; Perforin ; Pore Forming Cytotoxic Proteins ; T-Lymphocyte Subsets/cytology/*immunology ; T-Lymphocytes, Cytotoxic/cytology/*immunology
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  • 9
    Publication Date: 1999-06-12
    Description: Interferons (IFNs) are the most important cytokines in antiviral immune responses. "Natural IFN-producing cells" (IPCs) in human blood express CD4 and major histocompatibility complex class II proteins, but have not been isolated and further characterized because of their rarity, rapid apoptosis, and lack of lineage markers. Purified IPCs are here shown to be the CD4(+)CD11c- type 2 dendritic cell precursors (pDC2s), which produce 200 to 1000 times more IFN than other blood cells after microbial challenge. pDC2s are thus an effector cell type of the immune system, critical for antiviral and antitumor immune responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Siegal, F P -- Kadowaki, N -- Shodell, M -- Fitzgerald-Bocarsly, P A -- Shah, K -- Ho, S -- Antonenko, S -- Liu, Y J -- New York, N.Y. -- Science. 1999 Jun 11;284(5421):1835-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Saint Vincents Hospital and Medical Center, New York, NY 10011, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10364556" target="_blank"〉PubMed〈/a〉
    Keywords: CD40 Ligand ; Cell Lineage ; Cell Separation ; Cells, Cultured ; Dendritic Cells/cytology/*immunology/ultrastructure ; Humans ; Interferon Type I/*biosynthesis ; Interferon-alpha/*biosynthesis/genetics ; Interferon-beta/biosynthesis/genetics ; Interleukin-3/pharmacology ; Leukocytes, Mononuclear/immunology ; Membrane Glycoproteins/pharmacology ; Organelles/ultrastructure ; RNA, Messenger/genetics/metabolism ; Simplexvirus/immunology ; Stem Cells/cytology/immunology
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  • 10
    Publication Date: 1999-07-10
    Description: In the absence of disease, the vasculature of the mammalian eye is quiescent, in part because of the action of angiogenic inhibitors that prevent vessels from invading the cornea and vitreous. Here, an inhibitor responsible for the avascularity of these ocular compartments is identified as pigment epithelium-derived factor (PEDF), a protein previously shown to have neurotrophic activity. The amount of inhibitory PEDF produced by retinal cells was positively correlated with oxygen concentrations, suggesting that its loss plays a permissive role in ischemia-driven retinal neovascularization. These results suggest that PEDF may be of therapeutic use, especially in retinopathies where pathological neovascularization compromises vision and leads to blindness.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dawson, D W -- Volpert, O V -- Gillis, P -- Crawford, S E -- Xu, H -- Benedict, W -- Bouck, N P -- New York, N.Y. -- Science. 1999 Jul 9;285(5425):245-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology-Immunology, Department of Pathology, Robert H. Lurie Comprehensive Cancer Center, Northwestern University Medical School, Chicago, IL 60611, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10398599" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; Antibodies/immunology ; Cattle ; Cells, Cultured ; Chemotaxis/drug effects ; Culture Media, Conditioned ; Endothelial Growth Factors/metabolism ; Endothelium, Vascular/cytology/drug effects/physiology ; Eye/blood supply ; *Eye Proteins ; Humans ; Lymphokines/metabolism ; Mice ; Neovascularization, Pathologic/*drug therapy/metabolism/pathology ; Neovascularization, Physiologic/*drug effects ; *Nerve Growth Factors ; Oxygen/physiology ; Proteins/genetics/immunology/*pharmacology/*physiology ; RNA, Messenger/genetics/metabolism ; Rats ; Retina/*metabolism/pathology ; Retinal Neovascularization/*drug therapy ; Retinal Vessels/growth & development ; Serpins/genetics/immunology/*pharmacology/*physiology ; Tumor Cells, Cultured ; Vascular Endothelial Growth Factor A ; Vascular Endothelial Growth Factors
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