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  • Articles  (146)
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  • American Association for the Advancement of Science (AAAS)  (146)
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  • Articles  (146)
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  • American Association for the Advancement of Science (AAAS)  (146)
  • American Geophysical Union
  • American Meteorological Society
  • American Physical Society (APS)
  • Springer Nature
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  • 2010-2014  (49)
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  • 1
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    A subset of viral transcripts packaged within human cytomegalovirus particles (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-07-06
    Description: A human cytomegalovirus gene array was used to identify a previously unidentified class of viral transcripts. These transcripts, termed virion RNAs, were packaged within infectious virions and were delivered to the host cell on infection. This mechanism of herpesvirus gene expression allows for viral genes to be expressed within an infected cell immediately after virus entry and in the absence of transcription from the viral genome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bresnahan, W A -- Shenk, T -- CA85786/CA/NCI NIH HHS/ -- F32 AI010448/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2000 Jun 30;288(5475):2373-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10875924" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Nucleus/metabolism ; Cells, Cultured ; Cytomegalovirus/*genetics/*physiology ; Dactinomycin/pharmacology ; Gene Expression ; Genes, Viral ; Genome, Viral ; Golgi Apparatus/metabolism ; Humans ; Nucleic Acid Hybridization ; Nucleic Acid Synthesis Inhibitors/pharmacology ; Oligonucleotide Array Sequence Analysis ; RNA, Messenger/*genetics/isolation & purification/metabolism ; RNA, Viral/*genetics/isolation & purification/metabolism ; Recombinant Fusion Proteins/metabolism ; Transcription, Genetic ; Viral Proteins/genetics/metabolism ; Virion/*genetics/physiology ; Virus Assembly
    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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    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
    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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    Granuloma-specific expression of Mycobacterium virulence proteins from the glycine-rich PE-PGRS family (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-05-29
    Description: Pathogenic mycobacteria, including the agent of tuberculosis, Mycobacterium tuberculosis, must replicate in macrophages for long-term persistence within their niche during chronic infection: organized collections of macrophages and lymphocytes called granulomas. We identified several genes preferentially expressed when Mycobacterium marinum, the cause of fish and amphibian tuberculosis, resides in host granulomas and/or macrophages. Two were homologs of M. tuberculosis PE/PE-PGRS genes, a family encoding numerous repetitive glycine-rich proteins of unknown function. Mutation of two PE-PGRS genes produced M. marinum strains incapable of replication in macrophages and with decreased persistence in granulomas. Our results establish a direct role in virulence for some PE-PGRS proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ramakrishnan, L -- Federspiel, N A -- Falkow, S -- AI 32396/AI/NIAID NIH HHS/ -- K08 AI 01400/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2000 May 26;288(5470):1436-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA. lalitar@cmgm.stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10827956" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Proteins/chemistry/*genetics ; Cells, Cultured ; Disease Models, Animal ; Gene Expression Profiling ; Gene Expression Regulation, Bacterial ; Genes, Bacterial ; Glycine/analysis ; Granuloma/*microbiology/pathology ; Humans ; Macrophages/*microbiology ; Mutation ; Mycobacterium Infections, Nontuberculous/*microbiology/pathology ; Mycobacterium marinum/*genetics/growth & development/*pathogenicity ; Mycobacterium tuberculosis/genetics/pathogenicity ; Promoter Regions, Genetic ; Rana pipiens ; Tuberculosis/microbiology ; Virulence
    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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  • 4
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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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  • 5
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    Surface expression of HLA-E, an inhibitor of natural killer cells, enhanced by human cytomegalovirus gpUL40 (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-02-11
    Description: The nonclassical major histocompatibility complex (MHC) class I molecule HLA-E inhibits natural killer (NK) cell-mediated lysis by interacting with CD94/NKG2A receptors. Surface expression of HLA-E depends on binding of conserved peptides derived from MHC class I molecules. The same peptide is present in the leader sequence of the human cytomegalovirus (HCMV) glycoprotein UL40 (gpUL40). It is shown that, independently of the transporter associated with antigen processing, gpUL40 can up-regulate expression of HLA-E, which protects targets from NK cell lysis. While classical MHC class I molecules are down-regulated, HLA-E is up-regulated by HCMV. Induction of HLA-E surface expression by gpUL40 may represent an escape route for HCMV.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tomasec, P -- Braud, V M -- Rickards, C -- Powell, M B -- McSharry, B P -- Gadola, S -- Cerundolo, V -- Borysiewicz, L K -- McMichael, A J -- Wilkinson, G W -- New York, N.Y. -- Science. 2000 Feb 11;287(5455):1031.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Wales College of Medicine, Cardiff CF14 4XN, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10669413" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acid Substitution ; *Antigens, CD ; Cell Line ; Cell Membrane/immunology ; Cells, Cultured ; Conserved Sequence ; Cytomegalovirus/genetics/immunology/*metabolism ; Cytotoxicity, Immunologic ; Down-Regulation ; HLA Antigens/immunology/*metabolism ; Histocompatibility Antigens Class I/immunology/*metabolism ; Humans ; Killer Cells, Natural/*immunology ; Molecular Sequence Data ; Open Reading Frames ; Protein Sorting Signals/chemistry/*metabolism ; Receptors, Immunologic/metabolism ; Recombinant Fusion Proteins/chemistry/metabolism ; Transfection ; Up-Regulation ; Viral Proteins/chemistry/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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  • 6
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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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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Transport of peptide-MHC class II complexes in developing dendritic cells (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
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  • 8
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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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  • 9
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    Pig cloning by microinjection of fetal fibroblast nuclei (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-08-19
    Description: Pig cloning will have a marked impact on the optimization of meat production and xenotransplantation. To clone pigs from differentiated cells, we microinjected the nuclei of porcine (Sus scrofa) fetal fibroblasts into enucleated oocytes, and development was induced by electroactivation. The transfer of 110 cloned embryos to four surrogate mothers produced an apparently normal female piglet. The clonal provenance of the piglet was indicated by her coat color and confirmed by DNA microsatellite analysis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Onishi, A -- Iwamoto, M -- Akita, T -- Mikawa, S -- Takeda, K -- Awata, T -- Hanada, H -- Perry, A C -- New York, N.Y. -- Science. 2000 Aug 18;289(5482):1188-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Animal Breeding and Genetics, National Institute of Animal Industry, Tsukuba Norin Danchi, Ibaraki-ken 305-0901, Japan. onishi@niai.affrc.go.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10947985" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Cloning, Organism/*methods ; Electric Stimulation ; Embryo Transfer ; Embryonic and Fetal Development ; Female ; Fetus/cytology ; Fibroblasts/ultrastructure ; Microinjections ; Microsatellite Repeats ; *Nuclear Transfer Techniques ; Oocytes ; Pregnancy ; *Swine/embryology/genetics
    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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  • 10
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    Induction of nitric oxide-dependent apoptosis in motor neurons by zinc-deficient superoxide dismutase (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-01-05
    Description: Mutations in copper, zinc superoxide dismutase (SOD) have been implicated in the selective death of motor neurons in 2 percent of amyotrophic lateral sclerosis (ALS) patients. The loss of zinc from either wild-type or ALS-mutant SODs was sufficient to induce apoptosis in cultured motor neurons. Toxicity required that copper be bound to SOD and depended on endogenous production of nitric oxide. When replete with zinc, neither ALS-mutant nor wild-type copper, zinc SODs were toxic, and both protected motor neurons from trophic factor withdrawal. Thus, zinc-deficient SOD may participate in both sporadic and familial ALS by an oxidative mechanism involving nitric oxide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Estevez, A G -- Crow, J P -- Sampson, J B -- Reiter, C -- Zhuang, Y -- Richardson, G J -- Tarpey, M M -- Barbeito, L -- Beckman, J S -- R01 HL58209/HL/NHLBI NIH HHS/ -- R01 NS33291/NS/NINDS NIH HHS/ -- R01 NS36761/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1999 Dec 24;286(5449):2498-500.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anesthesiology, University of Alabama at Birmingham, Birmingham, AL 35233, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10617463" target="_blank"〉PubMed〈/a〉
    Keywords: Amyotrophic Lateral Sclerosis/drug therapy/*enzymology/genetics/pathology ; Animals ; *Apoptosis ; Brain-Derived Neurotrophic Factor/pharmacology ; Cells, Cultured ; Chelating Agents/pharmacology ; Copper/metabolism ; Fluoresceins/metabolism ; Liposomes ; Motor Neurons/*cytology/metabolism ; Mutation ; Nitrates/metabolism ; Nitric Oxide/*metabolism ; Nitric Oxide Synthase/antagonists & inhibitors/metabolism ; Nitric Oxide Synthase Type I ; Oxidation-Reduction ; Rats ; Superoxide Dismutase/chemistry/genetics/*metabolism/toxicity ; Superoxides/metabolism ; Zinc/*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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