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  • Articles  (4,539)
  • Latest Papers from Table of Contents or Articles in Press  (4,539)
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  • Natural Sciences in General  (4,539)
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  • Articles  (4,539)
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  • 1
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    Cancer. BRCA2 enters the fray (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-09-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, John H -- Elledge, Stephen J -- New York, N.Y. -- Science. 2002 Sep 13;297(5588):1822-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12228708" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; BRCA1 Protein/metabolism ; BRCA2 Protein/*chemistry/*metabolism ; Binding Sites ; Breast Neoplasms/genetics ; Crystallography, X-Ray ; DNA/*metabolism ; DNA Damage ; *DNA Repair ; DNA, Single-Stranded/metabolism ; DNA-Binding Proteins/metabolism ; Female ; Genes, BRCA1 ; Genes, BRCA2 ; Genetic Predisposition to Disease ; Humans ; Mice ; Ovarian Neoplasms/genetics ; Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Rad51 Recombinase ; Rats ; Recombination, Genetic ; Replication Protein A
    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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    Control of synaptic strength by glial TNFalpha (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-03-23
    Description: Activity-dependent modulation of synaptic efficacy in the brain contributes to neural circuit development and experience-dependent plasticity. Although glia are affected by activity and ensheathe synapses, their influence on synaptic strength has largely been ignored. Here, we show that a protein produced by glia, tumor necrosis factor alpha (TNFalpha), enhances synaptic efficacy by increasing surface expression of AMPA receptors. Preventing the actions of endogenous TNFalpha has the opposite effects. Thus, the continual presence of TNFalpha is required for preservation of synaptic strength at excitatory synapses. Through its effects on AMPA receptor trafficking, TNFalpha may play roles in synaptic plasticity and modulating responses to neural injury.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beattie, Eric C -- Stellwagen, David -- Morishita, Wade -- Bresnahan, Jacqueline C -- Ha, Byeong Keun -- Von Zastrow, Mark -- Beattie, Michael S -- Malenka, Robert C -- DA00439/DA/NIDA NIH HHS/ -- MH063394/MH/NIMH NIH HHS/ -- NS 31193/NS/NINDS NIH HHS/ -- NS38079/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2002 Mar 22;295(5563):2282-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Nancy Pritzker Laboratory, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Palo Alto, CA 94304, USA. beattie.2@osu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11910117" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/pharmacology ; Astrocytes/*metabolism ; Cells, Cultured ; Culture Media, Conditioned/pharmacology ; Gene Expression Regulation/drug effects ; Hippocampus/cytology/metabolism ; Neuronal Plasticity/drug effects ; Neurons/drug effects/metabolism ; Rats ; Rats, Sprague-Dawley ; Receptors, AMPA/metabolism ; Receptors, Tumor Necrosis Factor ; Receptors, Tumor Necrosis Factor, Type I ; Synapses/drug effects/*metabolism ; Synaptic Transmission/drug effects ; Tumor Necrosis Factor-alpha/antagonists & inhibitors/*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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  • 3
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    Disrupted timing of discontinuous but not continuous movements by cerebellar lesions (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-05-31
    Description: Patients with cerebellar damage are known to exhibit deficits in the temporal control of movements. We report that these deficits are restricted to discontinuous movements. Cerebellar patients exhibited no deficit in temporal variability when producing continuous, rhythmic movements. We hypothesize that the temporal properties of continuous movements are emergent and reflect the operation of other control parameters not associated with the cerebellum. In contrast, discontinuous movements require an explicit representation of the temporal goal, a function of the cerebellum. The requirement for explicit temporal representation provides a parsimonious account of cerebellar involvement in a range of tasks.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spencer, Rebecca M C -- Zelaznik, Howard N -- Diedrichsen, Jorn -- Ivry, Richard B -- NS17778/NS/NINDS NIH HHS/ -- NS30256/NS/NINDS NIH HHS/ -- NS40813/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2003 May 30;300(5624):1437-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychology, University of California, Berkeley, 3210 Tolman Hall #1650, Berkeley, CA 94720, USA. rspencer@socrates.berkeley.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12775842" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Aged, 80 and over ; Cerebellar Diseases/*physiopathology ; Cerebellum/physiology/*physiopathology ; Female ; Humans ; Male ; Middle Aged ; *Motor Activity ; Movement ; *Psychomotor Performance ; Spinocerebellar Degenerations/*physiopathology ; Time Factors
    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
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    Sustaining fisheries yields over evolutionary time scales (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-07-06
    Description: Fishery management plans ignore the potential for evolutionary change in harvestable biomass. We subjected populations of an exploited fish (Menidia menidia) to large, small, or random size-selective harvest of adults over four generations. Harvested biomass evolved rapidly in directions counter to the size-dependent force of fishing mortality. Large-harvested populations initially produced the highest catch but quickly evolved a lower yield than controls. Small-harvested populations did the reverse. These shifts were caused by selection of genotypes with slower or faster rates of growth. Management tools that preserve natural genetic variation are necessary for long-term sustainable yield.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Conover, David O -- Munch, Stephan B -- New York, N.Y. -- Science. 2002 Jul 5;297(5578):94-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Marine Sciences Research Center, State University of New York, Stony Brook, NY 11794-5000, USA. dconover@notes.cc.sunysb.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12098697" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Biomass ; Body Constitution ; Body Weight ; Conservation of Natural Resources ; *Fisheries ; Fishes/anatomy & histology/*genetics/*growth & development ; Genetic Variation ; Population Dynamics ; Regression Analysis ; *Selection, Genetic ; Time Factors
    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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  • 5
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    Parkinson's disease. Coincidence or connection? (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-04-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stone, Richard -- New York, N.Y. -- Science. 2002 Apr 19;296(5567):451-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11964452" target="_blank"〉PubMed〈/a〉
    Keywords: Canada/epidemiology ; Cluster Analysis ; Environmental Exposure/adverse effects ; *Famous Persons ; Female ; History, 21st Century ; Humans ; Male ; Parkinson Disease/*epidemiology/etiology ; *Television ; Time Factors ; Virus Diseases/complications/epidemiology
    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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  • 6
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    Coordinated reactivation of distributed memory traces in primate neocortex (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-09-21
    Description: Conversion of new memories into a lasting form may involve the gradual refinement and linking together of neural representations stored widely throughout neocortex. This consolidation process may require coordinated reactivation of distributed components of memory traces while the cortex is "offline," i.e., not engaged in processing external stimuli. Simultaneous neural ensemble recordings from four sites in the macaque neocortex revealed such coordinated reactivation. In motor, somatosensory, and parietal cortex (but not prefrontal cortex), the behaviorally induced correlation structure and temporal patterning of neural ensembles within and between regions were preserved, confirming a major tenet of the trace-reactivation theory of memory consolidation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoffman, K L -- McNaughton, B L -- MH01565/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2002 Sep 20;297(5589):2070-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Neural Systems, Memory, and Aging, University of Arizona, Tucson, AZ 85724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12242447" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Brain Mapping ; Cues ; Electrodes, Implanted ; Macaca mulatta ; Male ; Memory/*physiology ; Mental Recall/*physiology ; Motor Cortex/physiology ; Neocortex/*physiology ; Neurons/*physiology ; Parietal Lobe/physiology ; Prefrontal Cortex/physiology ; Somatosensory Cortex/physiology ; Time Factors
    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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  • 7
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    Ecology. New count of old whales adds up to big debate (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-07-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lubick, Naomi -- New York, N.Y. -- Science. 2003 Jul 25;301(5632):451.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12881542" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atlantic Ocean ; Conservation of Natural Resources ; DNA, Mitochondrial/genetics ; *Ecosystem ; Female ; Genetic Variation ; Genetics, Population ; Male ; Mutation ; Population Density ; Population Dynamics ; Time Factors ; *Whales/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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  • 8
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    Whales before whaling in the North Atlantic (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-07-26
    Description: It is well known that hunting dramatically reduced all baleen whale populations, yet reliable estimates of former whale abundances are elusive. Based on coalescent models for mitochondrial DNA sequence variation, the genetic diversity of North Atlantic whales suggests population sizes of approximately 240,000 humpback, 360,000 fin, and 265,000 minke whales. Estimates for fin and humpback whales are far greater than those previously calculated for prewhaling populations and 6 to 20 times higher than present-day population estimates. Such discrepancies suggest the need for a quantitative reevaluation of historical whale populations and a fundamental revision in our conception of the natural state of the oceans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roman, Joe -- Palumbi, Stephen R -- New York, N.Y. -- Science. 2003 Jul 25;301(5632):508-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Organismic and Evolutionary Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12881568" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atlantic Ocean ; Base Sequence ; Conservation of Natural Resources ; DNA, Mitochondrial/genetics ; *Ecosystem ; Female ; Genetic Variation ; Genetics, Population ; Male ; Molecular Sequence Data ; Population Density ; Population Dynamics ; Time Factors ; *Whales/classification/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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  • 9
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    Planetary Science. A-roving we will go, slowly (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-09-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kerr, Richard A -- New York, N.Y. -- Science. 2003 Sep 26;301(5641):1834.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14512597" target="_blank"〉PubMed〈/a〉
    Keywords: Extraterrestrial Environment ; *Mars ; Space Flight ; *Spacecraft ; Time Factors
    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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  • 10
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    Demography of dietary restriction and death in Drosophila (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-09-23
    Description: Dietary restriction (DR) increases life-span in organisms from yeast to mammals, presumably by slowing the accumulation of aging-related damage. Here we show that in Drosophila, DR extends life-span entirely by reducing the short-term risk of death. Two days after the application of DR at any age for the first time, previously fully fed flies are no more likely to die than flies of the same age that have been subjected to long-term DR. DR of mammals may also reduce short-term risk of death, and hence DR instigated at any age could generate a full reversal of mortality.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mair, William -- Goymer, Patrick -- Pletcher, Scott D -- Partridge, Linda -- New York, N.Y. -- Science. 2003 Sep 19;301(5640):1731-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University College London, Darwin Building, Gower Street, London WC1E 6BT, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14500985" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Animals ; *Caloric Restriction ; Demography ; *Diet ; Drosophila/*physiology ; Female ; *Longevity ; Male ; Mortality ; Reproduction ; Risk ; Temperature ; Time Factors
    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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  • 11
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    From anchovies to sardines and back: multidecadal change in the Pacific Ocean (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-01-11
    Description: In the Pacific Ocean, air and ocean temperatures, atmospheric carbon dioxide, landings of anchovies and sardines, and the productivity of coastal and open ocean ecosystems have varied over periods of about 50 years. In the mid-1970s, the Pacific changed from a cool "anchovy regime" to a warm "sardine regime." A shift back to an anchovy regime occurred in the middle to late 1990s. These large-scale, naturally occurring variations must be taken into account when considering human-induced climate change and the management of ocean living resources.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chavez, Francisco P -- Ryan, John -- Lluch-Cota, Salvador E -- Niquen C, Miguel -- New York, N.Y. -- Science. 2003 Jan 10;299(5604):217-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Monterey Bay Aquarium Research Institute, 7700 Sandholdt Road, Moss Landing, CA 95039, USA. chfr@mbari.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12522241" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atmosphere ; Birds ; Carbon Dioxide ; *Climate ; *Ecosystem ; *Fishes ; Pacific Ocean ; *Seawater ; Temperature ; Time Factors
    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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  • 12
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    Facilitation of spinal NMDA receptor currents by spillover of synaptically released glycine (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-06-28
    Description: In the mammalian CNS, N-methyl-D-aspartate (NMDA) receptors serve prominent roles in many physiological and pathophysiological processes including pain transmission. For full activation, NMDA receptors require the binding of glycine. It is not known whether the brain uses changes in extracellular glycine to modulate synaptic NMDA responses. Here, we show that synaptically released glycine facilitates NMDA receptor currents in the superficial dorsal horn, an area critically involved in pain processing. During high presynaptic activity, glycine released from inhibitory interneurons escapes the synaptic cleft and reaches nearby NMDA receptors by so-called spillover. In vivo, this process may contribute to the development of inflammatory hyperalgesia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ahmadi, Seifollah -- Muth-Selbach, Uta -- Lauterbach, Andreas -- Lipfert, Peter -- Neuhuber, Winfried L -- Zeilhofer, Hanns Ulrich -- New York, N.Y. -- Science. 2003 Jun 27;300(5628):2094-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut fur Experimentelle und Klinische Pharmakologie und Toxikologie, Universitat Erlangen-Nurnberg, Fahrstrasse 17, D-91054 Erlangen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12829784" target="_blank"〉PubMed〈/a〉
    Keywords: Analgesics/pharmacology ; Animals ; Anterior Horn Cells/drug effects/metabolism ; Diffusion ; Electric Stimulation ; Evoked Potentials/drug effects ; Excitatory Postsynaptic Potentials/drug effects ; Glycine/*metabolism/pharmacology ; In Vitro Techniques ; Interneurons/metabolism ; Neural Inhibition/drug effects ; Opioid Peptides/pharmacology ; Pain Measurement ; Patch-Clamp Techniques ; Posterior Horn Cells/drug effects/*metabolism ; Rats ; Rats, Sprague-Dawley ; Receptors, N-Methyl-D-Aspartate/*metabolism ; Serine/pharmacology ; Spinal Cord/drug effects/metabolism ; Synapses/*metabolism ; *Synaptic Transmission/drug effects ; Temperature
    Print ISSN: 0036-8075
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  • 13
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    Derepression of BDNF transcription involves calcium-dependent phosphorylation of MeCP2 (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-11-01
    Description: Mutations in MeCP2, which encodes a protein that has been proposed to function as a global transcriptional repressor, are the cause of Rett syndrome (RT T), an X-linked progressive neurological disorder. Although the selective inactivation of MeCP2 in neurons is sufficient to confer a Rett-like phenotype in mice, the specific functions of MeCP2 in postmitotic neurons are not known. We find that MeCP2 binds selectively to BDNF promoter III and functions to repress expression of the BDNF gene. Membrane depolarization triggers the calcium-dependent phosphorylation and release of MeCP2 from BDNF promoter III, thereby facilitating transcription. These studies indicate that MeCP2 plays a key role in the control of neuronal activity-dependent gene regulation and suggest that the deregulation of this process may underlie the pathology of RT T.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Wen G -- Chang, Qiang -- Lin, Yingxi -- Meissner, Alexander -- West, Anne E -- Griffith, Eric C -- Jaenisch, Rudolf -- Greenberg, Michael E -- HD 18655/HD/NICHD NIH HHS/ -- NS28829/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2003 Oct 31;302(5646):885-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Neuroscience, Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14593183" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain-Derived Neurotrophic Factor/*genetics ; Calcium/*metabolism ; Cell Membrane/physiology ; Cells, Cultured ; *Chromosomal Proteins, Non-Histone ; Cloning, Molecular ; CpG Islands ; DNA Methylation ; DNA-Binding Proteins/*metabolism ; Electrophoretic Mobility Shift Assay ; *Gene Expression Regulation ; Gene Silencing ; Histones/metabolism ; Methyl-CpG-Binding Protein 2 ; Methylation ; Mice ; Mice, Knockout ; Neurons/metabolism/physiology ; Phosphorylation ; Potassium Chloride/pharmacology ; Precipitin Tests ; Promoter Regions, Genetic ; Rats ; *Repressor Proteins ; Rett Syndrome/genetics ; *Transcription, Genetic
    Print ISSN: 0036-8075
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  • 14
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    Experience strengthening transmission by driving AMPA receptors into synapses (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-03-08
    Description: The mechanisms underlying experience-dependent plasticity in the brain may depend on the AMPA subclass of glutamate receptors (AMPA-Rs). We examined the trafficking of AMPA-Rs into synapses in the developing rat barrel cortex. In vivo gene delivery was combined with in vitro recordings to show that experience drives recombinant GluR1, an AMPA-R subunit, into synapses formed between layer 4 and layer 2/3 neurons. Moreover, expression of the GluR1 cytoplasmic tail, a construct that inhibits synaptic delivery of endogenous AMPA-Rs during long-term potentiation, blocked experience-driven synaptic potentiation. In general, synaptic incorporation of AMPA-Rs in vivo conforms to rules identified in vitro and contributes to plasticity driven by natural stimuli in the mammalian brain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Takahashi, Takuya -- Svoboda, Karel -- Malinow, Roberto -- NS032827/NS/NINDS NIH HHS/ -- NS038259/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2003 Mar 7;299(5612):1585-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Jones Laboratory, 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/12624270" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Electrophysiology ; Gene Transfer Techniques ; Long-Term Potentiation ; *Neuronal Plasticity ; Neurons/*metabolism/virology ; Patch-Clamp Techniques ; Rats ; Receptors, AMPA/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Sindbis Virus/genetics ; Somatosensory Cortex/*metabolism/virology ; Synapses/*metabolism ; *Synaptic Transmission ; Touch ; Vibrissae/physiology
    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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  • 15
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    Structural basis for a Ca2+-sensing function of the metabotropic glutamate receptors (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-03-28
    Description: The metabotropic glutamate receptors (mGluRs) are widely distributed in the brain and play important roles in synaptic plasticity. Here it is shown that some types of mGluRs are activated not only by glutamate but also by extracellular Ca2+ (Ca2+o). A single amino acid residue was found to determine the sensitivity of mGluRs to Ca2+o. One of the receptors, mGluR1alpha, but not its point mutant with reduced sensitivity to Ca2+o, caused morphological changes when transfected into mammalian cells. Thus, the sensing of Ca2+o by mGluRs may be important in cells under physiological condition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kubo, Y -- Miyashita, T -- Murata, Y -- New York, N.Y. -- Science. 1998 Mar 13;279(5357):1722-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurophysiology, Tokyo Metropolitan Institute for Neuroscience, Musashidai 2-6, Fuchu, Tokyo 183-8526, Japan. ykubo@tmin.ac.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9497291" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/ultrastructure ; Amino Acid Sequence ; Animals ; Binding Sites ; Brain/metabolism ; CHO Cells ; Calcium/*metabolism/pharmacology ; Cell Size ; Cricetinae ; Cyclic AMP/metabolism ; G Protein-Coupled Inwardly-Rectifying Potassium Channels ; Glutamic Acid/metabolism/pharmacology ; Molecular Sequence Data ; Oocytes ; Point Mutation ; Potassium Channels/metabolism ; *Potassium Channels, Inwardly Rectifying ; Rats ; Receptors, Metabotropic Glutamate/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Second Messenger Systems ; Transfection ; Xenopus laevis
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 16
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    Role of phosphorylation in regulation of the assembly of endocytic coat complexes (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-08-07
    Description: Clathrin-mediated endocytosis involves cycles of assembly and disassembly of clathrin coat components and their accessory proteins. Dephosphorylation of rat brain extract was shown to promote the assembly of dynamin 1, synaptojanin 1, and amphiphysin into complexes that also included clathrin and AP-2. Phosphorylation of dynamin 1 and synaptojanin 1 inhibited their binding to amphiphysin, whereas phosphorylation of amphiphysin inhibited its binding to AP-2 and clathrin. Thus, phosphorylation regulates the association and dissociation cycle of the clathrin-based endocytic machinery, and calcium-dependent dephosphorylation of endocytic proteins could prepare nerve terminals for a burst of endocytosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Slepnev, V I -- Ochoa, G C -- Butler, M H -- Grabs, D -- De Camilli, P -- CA46128/CA/NCI NIH HHS/ -- NS36251/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1998 Aug 7;281(5378):821-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Cell Biology, Yale University School of Medicine, 295 Congress Avenue, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9694653" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Protein Complex alpha Subunits ; Adaptor Protein Complex beta Subunits ; Adaptor Proteins, Vesicular Transport ; Adenosine Triphosphate/metabolism ; Animals ; Binding Sites ; Carbazoles/pharmacology ; Chromatography, Affinity ; Clathrin/*metabolism ; Cyclosporine/pharmacology ; Dimerization ; Dynamin I ; Dynamins ; *Endocytosis ; Enzyme Inhibitors/pharmacology ; GTP Phosphohydrolases/*metabolism ; Indole Alkaloids ; Membrane Proteins/*metabolism ; Nerve Tissue Proteins/*metabolism ; Phosphoric Monoester Hydrolases/*metabolism ; Rats ; Recombinant Fusion Proteins/metabolism ; src Homology Domains
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 17
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    Cholinergic switching within neocortical inhibitory networks (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-08-14
    Description: Differential actions of acetylcholine on the excitability of two subtypes of interneurons in layer V of the rat visual cortex were examined. Acetylcholine excited low-threshold spike (LTS) cells through nicotinic receptors, whereas it elicited hyperpolarization in fast spiking (FS) cells through muscarinic receptors. Axons of LTS cells were mainly distributed vertically to upper layers, and those of FS cells were primarily confined to layer V. Thus, cortical cholinergic activation may reduce some forms of intralaminar inhibition, promote intracolumnar inhibition, and change the direction of information flow within cortical circuits.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xiang, Z -- Huguenard, J R -- Prince, D A -- NS 06477/NS/NINDS NIH HHS/ -- NS 07280/NS/NINDS NIH HHS/ -- NS 12151/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1998 Aug 14;281(5379):985-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology and Neurological Sciences, Stanford University Medical Center, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9703513" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/*physiology ; Animals ; Hexamethonium/pharmacology ; In Vitro Techniques ; Interneurons/physiology ; Membrane Potentials ; Muscarinic Antagonists/pharmacology ; Nerve Net/*physiology ; *Neural Inhibition ; Nicotinic Antagonists/pharmacology ; Patch-Clamp Techniques ; Rats ; Rats, Sprague-Dawley ; Receptors, Nicotinic/physiology ; Scopolamine Hydrobromide/pharmacology ; Visual Cortex/cytology/*physiology
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  • 18
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    Protein kinase B kinases that mediate phosphatidylinositol 3,4,5-trisphosphate-dependent activation of protein kinase B (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-02-21
    Description: Protein kinase B (PKB) is activated in response to phosphoinositide 3-kinases and their lipid products phosphatidylinositol 3,4, 5-trisphosphate [PtdIns(3,4,5)P3] and PtdIns(3,4)P2 in the signaling pathways used by a wide variety of growth factors, antigens, and inflammatory stimuli. PKB is a direct target of these lipids, but this regulation is complex. The lipids can bind to the pleckstrin homologous domain of PKB, causing its translocation to the membrane, and also enable upstream, Thr308-directed kinases to phosphorylate and activate PKB. Four isoforms of these PKB kinases were purified from sheep brain. They bound PtdIns(3,4,5)P3 and associated with lipid vesicles containing it. These kinases contain an NH2-terminal catalytic domain and a COOH-terminal pleckstrin homologous domain, and their heterologous expression augments receptor activation of PKB, which suggests they are the primary signal transducers that enable PtdIns(3,4,5)P3 or PtdIns- (3,4)P2 to activate PKB and hence to control signaling pathways regulating cell survival, glucose uptake, and glycogen metabolism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stephens, L -- Anderson, K -- Stokoe, D -- Erdjument-Bromage, H -- Painter, G F -- Holmes, A B -- Gaffney, P R -- Reese, C B -- McCormick, F -- Tempst, P -- Coadwell, J -- Hawkins, P T -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1998 Jan 30;279(5351):710-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Inositide Laboratory, The Babraham Institute, Babraham, Cambridge CB2 4AT, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9445477" target="_blank"〉PubMed〈/a〉
    Keywords: 3-Phosphoinositide-Dependent Protein Kinases ; Alternative Splicing ; Amino Acid Sequence ; Animals ; Cell Line ; Cell Membrane/enzymology ; Cloning, Molecular ; DNA, Complementary ; Drosophila ; Drosophila Proteins ; Enzyme Activation ; Humans ; Liposomes/metabolism ; Molecular Sequence Data ; Open Reading Frames ; Phosphatidylinositol Phosphates/*metabolism ; Phosphorylation ; Platelet-Derived Growth Factor/pharmacology ; Protein-Serine-Threonine Kinases/chemistry/genetics/isolation & ; purification/*metabolism ; Proto-Oncogene Proteins/*metabolism ; Proto-Oncogene Proteins c-akt ; Rats ; Recombinant Proteins/metabolism ; Sheep ; *Signal Transduction
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  • 19
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    Transition from moderate to excessive drug intake: change in hedonic set point (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-10-09
    Description: Differential access to cocaine self-administration produced two patterns of drug intake in rats. With 1 hour of access per session, drug intake remained low and stable. In contrast, with 6 hours of access, drug intake gradually escalated over days. After escalation, drug consumption was characterized by an increased early drug loading and an upward shift in the cocaine dose-response function, suggesting an increase in hedonic set point. After 1 month of abstinence, escalation of cocaine intake was reinstated to a higher level than before. These findings may provide an animal model for studying the development of excessive drug intake and the basis of addiction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ahmed, S H -- Koob, G F -- DA04398/DA/NIDA NIH HHS/ -- DA08467/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1998 Oct 9;282(5387):298-300.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Psychopharmacology, Department of Neuropharmacology, CVN-7, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA. aserge@sage.scripps.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9765157" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Behavior, Addictive ; Cocaine/*administration & dosage ; Cocaine-Related Disorders/*etiology ; Dose-Response Relationship, Drug ; Drug Tolerance ; Male ; Rats ; Rats, Wistar ; Reinforcement (Psychology) ; Time Factors
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  • 20
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    Target-specific expression of presynaptic mossy fiber plasticity (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-03-21
    Description: Mossy fiber synaptic transmission at hippocampal CA3 pyramidal cells and interneurons was compared in rat brain slices to determine whether mossy terminals are functionally equivalent. Tetanic stimulation of mossy fibers induced long-term potentiation in pyramidal neurons but was either without effect or it induced depression at synapses onto interneurons. Unlike transmission onto pyramidal neurons, transmission onto interneurons was not potentiated after adenosine 3',5'-monophosphate (cAMP) activation. Furthermore, metabotropic glutamate receptor depression of transmission onto interneurons did not involve cAMP-dependent pathways. Thus, synaptic terminals arising from a common afferent pathway do not function as a single compartment but are specialized, depending on their postsynaptic target.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maccaferri, G -- Toth, K -- McBain, C J -- New York, N.Y. -- Science. 1998 Feb 27;279(5355):1368-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Cellular and Molecular Neurophysiology, Room 5A72, Building 49, National Institute of Child Health and Human Development, 9000 Rockville Pike, Bethesda MD 20892-4495, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9478900" target="_blank"〉PubMed〈/a〉
    Keywords: Afferent Pathways ; Animals ; Colforsin/pharmacology ; Cyclic AMP/metabolism ; Cycloleucine/analogs & derivatives/pharmacology ; Cyclopropanes/pharmacology ; Electric Stimulation ; Excitatory Postsynaptic Potentials/drug effects ; Glycine/analogs & derivatives/pharmacology ; Hippocampus/cytology/*physiology ; In Vitro Techniques ; Interneurons/drug effects/*physiology ; *Long-Term Potentiation ; Mossy Fibers, Hippocampal/*physiology ; Pyramidal Cells/drug effects/*physiology ; Rats ; Rats, Sprague-Dawley ; Receptors, Metabotropic Glutamate/agonists/physiology ; Synaptic Transmission/drug effects
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  • 21
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    Postdoctoral patterns, career advancement, and problems (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-08
    Description: Postdoctoral appointments can have different functions and meanings, depending on the field and whether the postdoc is a man or a woman. The Ph.D.'s-Ten Years Later study confirmed that in biochemistry, the postdoc, not the Ph.D., has become the general proving ground for excellence both in academia and industry. Because they spent a longer time in these "mandatory" postdocs, biochemists had the largest proportion of untenured faculty 10 to 13 years after the Ph. D. In mathematics, where substantially fewer postdoctoral positions are available, Ph.D.'s taking postdocs are more likely to obtain faculty positions, but this is true only for men. University administrators should be accountable for monitoring the total time spent in these positions and should provide administrative assistance for skills training, career growth, and the job search. In addition, creative solutions concerning the dual-career couple phenomenon are necessary.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nerad, M -- Cerny, J -- New York, N.Y. -- Science. 1999 Sep 3;285(5433):1533-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Graduate Division, University of California, Berkeley, 424 Sproul Hall, Berkeley, CA 94720-5900, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10477510" target="_blank"〉PubMed〈/a〉
    Keywords: *Biochemistry/education ; *Career Mobility ; *Education, Graduate ; Employment ; Faculty ; *Fellowships and Scholarships ; Female ; Humans ; Male ; *Mathematics ; Salaries and Fringe Benefits ; Societies, Scientific ; Time Factors ; United States ; Universities
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  • 22
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    Src activation in the induction of long-term potentiation in CA1 hippocampal neurons (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-03-21
    Description: Long-term potentiation (LTP) is an activity-dependent strengthening of synaptic efficacy that is considered to be a model of learning and memory. Protein tyrosine phosphorylation is necessary to induce LTP. Here, induction of LTP in CA1 pyramidal cells of rats was prevented by blocking the tyrosine kinase Src, and Src activity was increased by stimulation producing LTP. Directly activating Src in the postsynaptic neuron enhanced excitatory synaptic responses, occluding LTP. Src-induced enhancement of alpha-amino-3-hydroxy-5-methylisoxazolepropionic acid (AMPA) receptor-mediated synaptic responses required raised intracellular Ca2+ and N-methyl-D-aspartate (NMDA) receptors. Thus, Src activation is necessary and sufficient for inducing LTP and may function by up-regulating NMDA receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lu, Y M -- Roder, J C -- Davidow, J -- Salter, M W -- New York, N.Y. -- Science. 1998 Feb 27;279(5355):1363-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Samuel Lunenfeld Research Institute, Mount Sinai Hospital, and Department of Molecular and Medical Genetics, University of Toronto, M5S 1A8, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9478899" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcium/metabolism ; Electric Stimulation ; Enzyme Activation ; Excitatory Postsynaptic Potentials/drug effects ; Hippocampus/cytology/enzymology/*physiology ; In Vitro Techniques ; *Long-Term Potentiation ; Molecular Sequence Data ; Oligopeptides/pharmacology ; Patch-Clamp Techniques ; Peptide Fragments/pharmacology ; Proto-Oncogene Proteins pp60(c-src)/pharmacology ; Pyramidal Cells/enzymology/*physiology ; Rats ; Rats, Sprague-Dawley ; Receptors, AMPA/physiology ; Receptors, N-Methyl-D-Aspartate/physiology ; Recombinant Proteins/pharmacology ; Up-Regulation ; src-Family Kinases/*metabolism
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  • 23
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    Neurons and silicon get intimate (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    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
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  • 24
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    Stem cells. Rat spinal cord function partially restored (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-12-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wickelgren, I -- New York, N.Y. -- Science. 1999 Dec 3;286(5446):1826-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10610569" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Astrocytes/cytology ; Cell Differentiation ; Cell Survival ; Embryo, Mammalian ; Mice ; Neurons/cytology ; Oligodendroglia/cytology ; Rats ; Spinal Cord/cytology/*physiology ; Spinal Cord Injuries/*therapy ; *Stem Cell Transplantation ; Stem Cells/cytology
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  • 25
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    Key brain receptor gets an unusual regulator (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-12-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wickelgren, I -- New York, N.Y. -- Science. 1999 Nov 12;286(5443):1265-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10610528" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Astrocytes/*enzymology ; Brain/*enzymology ; Cloning, Molecular ; Glutamic Acid/metabolism ; Neurons/metabolism ; Racemases and Epimerases/*genetics/metabolism ; Rats ; Receptors, N-Methyl-D-Aspartate/metabolism ; Serine/*biosynthesis/metabolism ; Stereoisomerism ; Synapses/metabolism
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  • 26
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    Filling in the blanks of the GABAB receptor (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    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
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  • 27
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    Rapid spine delivery and redistribution of AMPA receptors after synaptic NMDA receptor activation (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    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
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  • 28
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    Calmodulin dependence of presynaptic metabotropic glutamate receptor signaling (1999)
    American Association for the Advancement of Science (AAAS)
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    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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    AP-2 recruitment to synaptotagmin stimulated by tyrosine-based endocytic motifs (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-08-24
    Description: Clathrin-mediated endocytosis is initiated by the recruitment of the clathrin adaptor protein AP-2 to the plasma membrane where the membrane protein synaptotagmin is thought to act as a docking site. AP-2 also interacts with endocytic motifs present in other cargo proteins. Peptides with a tyrosine-based endocytic motif stimulated binding of AP-2 to synaptotagmin and enhanced AP-2 recruitment to the plasma membrane of neuronal and non-neuronal cells. This suggests a mechanism by which nucleation of clathrin-coated pits is stimulated by the loading of cargo proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Haucke, V -- De Camilli, P -- CA46128/CA/NCI NIH HHS/ -- NS36252/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1999 Aug 20;285(5431):1268-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology and Howard Hughes Medical Institute, Yale University School of Medicine, 295 Congress Avenue, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10455054" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Protein Complex alpha Subunits ; Adaptor Proteins, Vesicular Transport ; Animals ; Binding Sites ; CHO Cells ; *Calcium-Binding Proteins ; Cattle ; Cell Membrane/metabolism ; Clathrin/*metabolism ; Coated Pits, Cell-Membrane/*metabolism ; Cricetinae ; *Endocytosis ; Membrane Glycoproteins/chemistry/*metabolism ; Membrane Proteins/*metabolism ; Nerve Tissue Proteins/chemistry/*metabolism ; Neurons/metabolism ; Oligopeptides/chemistry/metabolism/*pharmacology ; Phospholipase D/metabolism ; Protein Binding ; Rats ; Recombinant Fusion Proteins/metabolism ; Synaptic Membranes/*metabolism ; Synaptotagmins ; Tyrosine/chemistry
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    Techsigting. Neural regeneration. Some nerve! (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-05-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sikorski, R -- Peters, R -- New York, N.Y. -- Science. 1999 Apr 16;284(5413):453.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10232993" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation ; Cell Division ; Cell Separation ; Chick Embryo ; Neural Crest/*cytology/embryology ; Neuroglia/*cytology ; Neurons/*cytology ; Rats ; Regeneration ; Sciatic Nerve/*cytology/embryology ; Stem Cells/*cytology
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    Role of DNA 5-methylcytosine transferase in cell transformation by fos (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-01-15
    Description: The Fos and Jun oncoproteins form dimeric complexes that stimulate transcription of genes containing activator protein-1 regulatory elements. We found, by representational difference analysis, that expression of DNA 5-methylcytosine transferase (dnmt1) in fos-transformed cells is three times the expression in normal fibroblasts and that fos-transformed cells contain about 20 percent more 5-methylcytosine than normal fibroblasts. Transfection of the gene encoding Dnmt1 induced morphological transformation, whereas inhibition of dnmt1 expression or activity resulted in reversion of fos transformation. Inhibition of histone deacetylase, which associates with methylated DNA, also caused reversion. These results suggest that fos may transform cells through alterations in DNA methylation and in histone deacetylation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bakin, A V -- Curran, T -- P30 CA21765/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1999 Jan 15;283(5400):387-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9888853" target="_blank"〉PubMed〈/a〉
    Keywords: 5-Methylcytosine ; Acetylation ; Animals ; Cell Size ; *Cell Transformation, Neoplastic ; Cytosine/analogs & derivatives/metabolism ; DNA (Cytosine-5-)-Methyltransferase/genetics/*metabolism ; DNA Methylation ; Enzyme Inhibitors/pharmacology ; Gene Expression Regulation, Neoplastic ; *Genes, fos ; Histone Deacetylase Inhibitors ; Histones/metabolism ; Hydroxamic Acids/pharmacology ; Proto-Oncogene Proteins c-fos/*metabolism ; Rats ; Transcription, Genetic ; Transfection
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    Pigment epithelium-derived factor: a potent inhibitor of angiogenesis (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    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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    Focal adhesion motility revealed in stationary fibroblasts (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-11-05
    Description: Focal adhesions (FAs) are clustered integrins and associated proteins that mediate cell adhesion and signaling. A green fluorescent protein-beta1 integrin chimera was used to label FAs in living cells. In stationary cells, FAs were highly motile, moving linearly for several plaque lengths toward the cell center. FA motility was independent of cell density and resulted from contraction of associated actin fibers. In migrating cells, FAs were stationary and only moved in the tail. FA motility in stationary cells suggests that cell movement may be regulated by a clutch-like mechanism by which the affinity of integrins to substrate may be altered in response to migratory cues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smilenov, L B -- Mikhailov, A -- Pelham, R J -- Marcantonio, E E -- Gundersen, G G -- GM42026/GM/NIGMS NIH HHS/ -- GM44585/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Nov 5;286(5442):1172-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Columbia University, New York, NY 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10550057" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Actins/physiology ; Animals ; Antigens, CD29/*metabolism ; *Cell Adhesion ; Cell Count ; Cell Line ; *Cell Movement ; Fibroblasts/*cytology/metabolism ; Fluorescence ; Green Fluorescent Proteins ; Luminescent Proteins ; Mice ; Microscopy, Interference ; Rats ; Recombinant Fusion Proteins/metabolism
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    Neuronal protection in stroke by an sLex-glycosylated complement inhibitory protein (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-07-27
    Description: Glycoprotein adhesion receptors such as selectins contribute to tissue injury in stroke. Ischemic neurons strongly expressed C1q, which may target them for complement-mediated attack or C1qRp-mediated clearance. A hybrid molecule was used to simultaneously inhibit both complement activation and selectin-mediated adhesion. The extracellular domain of soluble complement receptor-1 (sCR1) was sialyl Lewis x glycosylated (sCR1sLex) to inhibit complement activation and endothelial-platelet-leukocyte interactions. sCR1 and sCR1sLex colocalized to ischemic cerebral microvessels and C1q-expressing neurons, inhibited neutrophil and platelet accumulation, and reduced cerebral infarct volumes. Additional benefit was conferred by sialyl Lewis x glycosylation of the unmodified parent sCR1 molecule.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huang, J -- Kim, L J -- Mealey, R -- Marsh, H C Jr -- Zhang, Y -- Tenner, A J -- Connolly, E S Jr -- Pinsky, D J -- R01 HL55397/HL/NHLBI NIH HHS/ -- R01 HL59488/HL/NHLBI NIH HHS/ -- R01 NS35144/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1999 Jul 23;285(5427):595-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Columbia University, College of Physicians and Surgeons, 630 West 168th Street, New York, NY 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10417391" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Platelets/physiology ; Cell Adhesion ; Cerebral Cortex/blood supply/immunology/metabolism ; Cerebral Infarction/drug therapy ; Cerebrovascular Circulation ; Cerebrovascular Disorders/*drug therapy/immunology/physiopathology ; Complement Activation ; Complement C1q/metabolism ; Glycosylation ; Humans ; Ischemic Attack, Transient/*drug therapy/immunology/physiopathology ; Leukocytes/physiology ; Mice ; Neurons/immunology/metabolism ; Neuroprotective Agents/administration & dosage/adverse ; effects/metabolism/*therapeutic use ; Neutrophils/physiology ; Oligosaccharides/administration & dosage/adverse effects/metabolism/*therapeutic ; use ; Platelet Adhesiveness ; Receptors, Complement/administration & dosage/metabolism/*therapeutic use ; Reperfusion Injury/drug therapy/immunology/metabolism ; Selectins/metabolism ; Time Factors
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    Spatiotemporal dynamics of inositol 1,4,5-trisphosphate that underlies complex Ca2+ mobilization patterns (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-05-29
    Description: Inositol 1,4,5-trisphosphate (IP3) is a second messenger that elicits complex spatiotemporal patterns of calcium ion (Ca2+) mobilization and has essential roles in the regulation of many cellular functions. In Madin-Darby canine kidney epithelial cells, green fluorescent protein-tagged pleckstrin homology domain translocated from the plasma membrane to the cytoplasm in response to increased concentration of IP3. The detection of translocation enabled monitoring of IP3 concentration changes within single cells and revealed spatiotemporal dynamics in the concentration of IP3 synchronous with Ca2+ oscillations and intracellular and intercellular IP3 waves that accompanied Ca2+ waves. Such changes in IP3 concentration may be fundamental to Ca2+ signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hirose, K -- Kadowaki, S -- Tanabe, M -- Takeshima, H -- Iino, M -- New York, N.Y. -- Science. 1999 May 28;284(5419):1527-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Faculty of Medicine, University of Tokyo and CREST, Japan Science and Technology Corporation, Tokyo 113-8654, Japan. hirose@calcium.cmp.m.u-tokyo.ac.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10348740" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/pharmacology ; Animals ; Calcium/*metabolism ; *Calcium Signaling ; Cell Line ; Cell Membrane/metabolism ; Cell Nucleus/metabolism ; Cytoplasm/metabolism ; Dogs ; Green Fluorescent Proteins ; Inositol 1,4,5-Trisphosphate/*metabolism ; Inositol Phosphates/metabolism ; Isoenzymes/chemistry/metabolism ; Ligands ; Luminescent Proteins ; Microscopy, Confocal ; Phosphatidylinositol 4,5-Diphosphate/metabolism ; Phospholipase C delta ; Recombinant Fusion Proteins/metabolism ; Time Factors ; Type C Phospholipases/chemistry/metabolism
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    Blockade of NMDA receptors and apoptotic neurodegeneration in the developing brain (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-01-05
    Description: Programmed cell death (apoptosis) occurs during normal development of the central nervous system. However, the mechanisms that determine which neurons will succumb to apoptosis are poorly understood. Blockade of N-methyl-D-aspartate (NMDA) glutamate receptors for only a few hours during late fetal or early neonatal life triggered widespread apoptotic neurodegeneration in the developing rat brain, suggesting that the excitatory neurotransmitter glutamate, acting at NMDA receptors, controls neuronal survival. These findings may have relevance to human neurodevelopmental disorders involving prenatal (drug-abusing mothers) or postnatal (pediatric anesthesia) exposure to drugs that block NMDA receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ikonomidou, C -- Bosch, F -- Miksa, M -- Bittigau, P -- Vockler, J -- Dikranian, K -- Tenkova, T I -- Stefovska, V -- Turski, L -- Olney, J W -- AG 11355/AG/NIA NIH HHS/ -- DA 05072/DA/NIDA NIH HHS/ -- MH 38894/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1999 Jan 1;283(5398):70-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatric Neurology, Charite-Virchow Clinics, Humboldt University, Augustenburger Platz 1, 13353 Berlin, Germany. hrissanthi.ikonomidou@charite.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9872743" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Brain/*cytology/drug effects/embryology/growth & development ; Calcium Channel Blockers/pharmacology ; Dizocilpine Maleate/pharmacology ; Dopamine Antagonists/pharmacology ; Dose-Response Relationship, Drug ; Excitatory Amino Acid Antagonists/pharmacology ; Fetus ; Haloperidol/pharmacology ; Immunohistochemistry ; In Situ Nick-End Labeling ; Microscopy, Electron ; Muscarinic Antagonists/pharmacology ; *Nerve Degeneration ; Neurons/*cytology/drug effects/metabolism ; Quinoxalines/pharmacology ; Rats ; Receptors, N-Methyl-D-Aspartate/*antagonists & inhibitors/metabolism ; Scopolamine Hydrobromide/pharmacology
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    Real-time tracking of memory formation in the human rhinal cortex and hippocampus (1999)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1999-09-08
    Description: A fundamental question about human memory is which brain structures are involved, and when, in transforming experiences into memories. This experiment sought to identify neural correlates of memory formation with the use of intracerebral electrodes implanted in the brains of patients with temporal lobe epilepsy. Event-related potentials (ERPs) were recorded directly from the medial temporal lobe (MTL) as the patients studied single words. ERPs elicited by words subsequently recalled in a memory test were contrasted with ERPs elicited by unrecalled words. Memory formation was associated with distinct but interrelated ERP differences within the rhinal cortex and the hippocampus, which arose after about 300 and 500 milliseconds, respectively. These findings suggest that declarative memory formation is dissociable into subprocesses and sequentially organized within the MTL.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fernandez, G -- Effern, A -- Grunwald, T -- Pezer, N -- Lehnertz, K -- Dumpelmann, M -- Van Roost, D -- Elger, C E -- New York, N.Y. -- Science. 1999 Sep 3;285(5433):1582-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Epileptology, University of Bonn, 53105 Bonn, Germany. gf@mailer.meb.uni-bonn.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10477525" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Analysis of Variance ; Brain Mapping ; Electrodes, Implanted ; Epilepsy, Temporal Lobe/physiopathology ; Evoked Potentials ; Female ; Hippocampus/*physiology ; Humans ; Magnetic Resonance Imaging ; Male ; Memory/*physiology ; Mental Recall/*physiology ; Middle Aged ; Neurons/physiology ; Temporal Lobe/*physiology ; Time Factors
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    Building neural representations of habits (1999)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1999-11-27
    Description: Memories for habits and skills ("implicit or procedural memory") and memories for facts ("explicit or episodic memory") are built up in different brain systems and are vulnerable to different neurodegenerative disorders in humans. So that the striatum-based mechanisms underlying habit formation could be studied, chronic recordings from ensembles of striatal neurons were made with multiple tetrodes as rats learned a T-maze procedural task. Large and widely distributed changes in the neuronal activity patterns occurred in the sensorimotor striatum during behavioral acquisition, culminating in task-related activity emphasizing the beginning and end of the automatized procedure. The new ensemble patterns remained stable during weeks of subsequent performance of the same task. These results suggest that the encoding of action in the sensorimotor striatum undergoes dynamic reorganization as habit learning proceeds.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jog, M S -- Kubota, Y -- Connolly, C I -- Hillegaart, V -- Graybiel, A M -- R03 MH57878/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1999 Nov 26;286(5445):1745-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉London Health Sciences Center, London, Ontario N6A 5A5, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10576743" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Behavior, Animal ; Brain Mapping ; Corpus Striatum/*physiology ; Electrodes, Implanted ; Evoked Potentials ; *Habits ; Locomotion ; *Maze Learning ; Memory/physiology ; Motor Activity ; Neurons/physiology ; Rats ; Reaction Time
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    Cell survival promoted by the Ras-MAPK signaling pathway by transcription-dependent and -independent mechanisms (1999)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1999-11-13
    Description: A mechanism by which the Ras-mitogen-activated protein kinase (MAPK) signaling pathway mediates growth factor-dependent cell survival was characterized. The MAPK-activated kinases, the Rsks, catalyzed the phosphorylation of the pro-apoptotic protein BAD at serine 112 both in vitro and in vivo. The Rsk-induced phosphorylation of BAD at serine 112 suppressed BAD-mediated apoptosis in neurons. Rsks also are known to phosphorylate the transcription factor CREB (cAMP response element-binding protein) at serine 133. Activated CREB promoted cell survival, and inhibition of CREB phosphorylation at serine 133 triggered apoptosis. These findings suggest that the MAPK signaling pathway promotes cell survival by a dual mechanism comprising the posttranslational modification and inactivation of a component of the cell death machinery and the increased transcription of pro-survival genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bonni, A -- Brunet, A -- West, A E -- Datta, S R -- Takasu, M A -- Greenberg, M E -- NIHP30-HD18655/HD/NICHD NIH HHS/ -- P01 HD 24926/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1999 Nov 12;286(5443):1358-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Neuroscience, Children's Hospital, and Department of Neurobiology, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10558990" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Brain-Derived Neurotrophic Factor/pharmacology ; Carrier Proteins/genetics/metabolism ; *Cell Survival ; Cells, Cultured ; Cerebellum/cytology ; Cyclic AMP Response Element-Binding Protein/metabolism ; Enzyme Activation ; Enzyme Inhibitors/pharmacology ; Flavonoids/pharmacology ; Insulin-Like Growth Factor I/pharmacology ; MAP Kinase Kinase 1 ; *MAP Kinase Signaling System ; Mitogen-Activated Protein Kinase Kinases/antagonists & inhibitors/metabolism ; Mitogen-Activated Protein Kinases/antagonists & inhibitors/metabolism ; Mutation ; Neurons/*cytology/metabolism ; Phosphorylation ; Phosphoserine/metabolism ; *Protein-Serine-Threonine Kinases ; Rats ; Rats, Long-Evans ; Recombinant Fusion Proteins/metabolism ; Ribosomal Protein S6 Kinases/genetics/*metabolism ; *Transcription, Genetic ; Transfection ; bcl-Associated Death Protein ; ras Proteins/metabolism
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    Dissecting dendrite dynamics (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-04-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, S J -- New York, N.Y. -- Science. 1999 Mar 19;283(5409):1860-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA 94305, USA. sjsmith@leland.stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10206891" target="_blank"〉PubMed〈/a〉
    Keywords: 2-Amino-5-phosphonovalerate/pharmacology ; Action Potentials ; Animals ; Dendrites/*physiology/ultrastructure ; Excitatory Amino Acid Antagonists/pharmacology ; Glutamic Acid/metabolism ; Hippocampus/cytology ; Microscopy, Fluorescence ; Neurons/physiology/ultrastructure ; Pseudopodia/*physiology/ultrastructure ; Rats ; Receptors, N-Methyl-D-Aspartate/*physiology ; Synapses/*physiology/ultrastructure ; Synaptic Membranes/physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Prolonged activation of mitochondrial conductances during synaptic transmission (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-11-13
    Description: Although ion channels have been detected in mitochondria, scientists have not been able to record ion transport in mitochondria of intact cells. A variation of the patch clamp technique was used to record ion channel activity from intracellular organelles in the presynaptic terminal of the squid. Electron microscopy indicated that mitochondria are numerous in this terminal and are the only organelles compatible with the tips of the pipettes. Before synaptic stimulation, channel activity was infrequent and its conductance was small, although large conductances ( approximately 0.5 to 2.5 nanosiemens) could be detected occasionally. During a train of action potentials, the conductance of the mitochondrial membrane increased up to 60-fold. The conductance increased after a delay of several hundred milliseconds and continued to increase after stimulation had stopped. Recovery occurred over tens of seconds.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jonas, E A -- Buchanan, J -- Kaczmarek, L K -- New York, N.Y. -- Science. 1999 Nov 12;286(5443):1347-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10558987" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Calcium/metabolism ; Calcium Channels/metabolism ; Decapodiformes ; Electric Conductivity ; Electric Stimulation ; Intracellular Membranes/metabolism ; Ion Channels/*metabolism ; Ion Transport ; Microscopy, Electron ; Mitochondria/*metabolism ; Patch-Clamp Techniques ; Porins/metabolism ; Presynaptic Terminals/*metabolism/ultrastructure ; *Synaptic Transmission ; Time Factors ; Voltage-Dependent Anion Channels
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    The role of local actin instability in axon formation (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-03-19
    Description: The role of localized instability of the actin network in specifying axonal fate was examined with the use of rat hippocampal neurons in culture. During normal neuronal development, actin dynamics and instability polarized to a single growth cone before axon formation. Consistently, global application of actin-depolymerizing drugs and of the Rho-signaling inactivator toxin B to nonpolarized cells produced neurons with multiple axons. Moreover, disruption of the actin network in one individual growth cone induced its neurite to become the axon. Thus, local instability of the actin network restricted to a single growth cone is a physiological signal specifying neuronal polarization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bradke, F -- Dotti, C G -- New York, N.Y. -- Science. 1999 Mar 19;283(5409):1931-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉European Molecular Biology Laboratory, Cell Biology Programme, Meyerhofstrasse 1, 69012 Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10082468" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism/*physiology ; Animals ; Axons/*physiology/ultrastructure ; *Bacterial Proteins ; Bacterial Toxins/pharmacology ; Bicyclo Compounds, Heterocyclic/pharmacology ; Cell Polarity ; Cells, Cultured ; Cytochalasin D/pharmacology ; GTP Phosphohydrolases/antagonists & inhibitors/metabolism ; Growth Cones/drug effects/*physiology/ultrastructure ; Hippocampus ; Microtubules/physiology/ultrastructure ; Neurites/*physiology/ultrastructure ; Phenotype ; Pseudopodia/drug effects/ultrastructure ; Rats ; Signal Transduction ; Thiazoles/pharmacology ; Thiazolidines
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 43
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    Precisely localized LTD in the neocortex revealed by infrared-guided laser stimulation (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-10-03
    Description: In a direct approach to elucidate the origin of long-term depression (LTD), glutamate was applied onto dendrites of neurons in rat neocortical slices. An infrared-guided laser stimulation was used to release glutamate from caged glutamate in the focal spot of an ultraviolet laser. A burst of light flashes caused an LTD-like depression of glutamate receptor responses, which was highly confined to the region of "tetanic" stimulation (〈10 micrometers). A similar depression of glutamate receptor responses was observed during LTD of synaptic transmission. A spatially highly specific postsynaptic mechanism can account for the LTD induced by glutamate release.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dodt, H -- Eder, M -- Frick, A -- Zieglgansberger, W -- New York, N.Y. -- Science. 1999 Oct 1;286(5437):110-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max-Planck-Institute of Psychiatry, Kraepelinstrasse 2, 80804 Munich, Germany. dodt@mpipsykl.mpg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10506556" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dizocilpine Maleate/pharmacology ; Electric Stimulation ; Excitatory Amino Acid Antagonists/pharmacology ; Excitatory Postsynaptic Potentials ; Glutamates/pharmacology ; Glutamic Acid/metabolism ; In Vitro Techniques ; Infrared Rays ; Lasers ; Microscopy, Video ; Neocortex/cytology/*physiology ; *Neuronal Plasticity ; Patch-Clamp Techniques ; Photolysis ; Pyramidal Cells/*physiology ; Rats ; Rats, Sprague-Dawley ; Receptors, Glutamate/*metabolism ; Receptors, N-Methyl-D-Aspartate/antagonists & inhibitors/metabolism ; Synapses/*physiology ; *Synaptic Transmission
    Print ISSN: 0036-8075
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    Neuroscience. Early insult rewires pain circuits (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-08-12
    Description: On page 628, neuroscientists report that painful stimuli delivered to rats shortly after birth permanently rewire the spinal cord circuits that respond to pain. Not only do the circuits contain more axons, but the axons extend to more areas of the spinal cord than they normally would. The results should help convince skeptics of the importance of managing pain in human infants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Helmuth, L -- New York, N.Y. -- Science. 2000 Jul 28;289(5479):521-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10939955" target="_blank"〉PubMed〈/a〉
    Keywords: Afferent Pathways ; Aging ; Animals ; Animals, Newborn ; Axons/*physiology ; Hindlimb/innervation ; Humans ; Infant, Newborn ; Inflammation/physiopathology ; *Pain ; Pain Threshold ; Rats ; Sciatic Nerve/*anatomy & histology/physiology ; Spinal Cord/*cytology
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  • 45
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    Reversal of antipsychotic-induced working memory deficits by short-term dopamine D1 receptor stimulation (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-03-17
    Description: Chronic blockade of dopamine D2 receptors, a common mechanism of action for antipsychotic drugs, down-regulates D1 receptors in the prefrontal cortex and, as shown here, produces severe impairments in working memory. These deficits were reversed in monkeys by short-term coadministration of a D1 agonist, ABT 431, and this improvement was sustained for more than a year after cessation of D1 treatment. These findings indicate that pharmacological modulation of the D1 signaling pathway can produce long-lasting changes in functional circuits underlying working memory. Resetting this pathway by brief exposure to the agonist may provide a valuable strategy for therapeutic intervention in schizophrenia and other dopamine dysfunctional states.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Castner, S A -- Williams, G V -- Goldman-Rakic, P S -- P01DA10160/DA/NIDA NIH HHS/ -- P50MH44866/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2000 Mar 17;287(5460):2020-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Neurobiology, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10720329" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antipsychotic Agents/*pharmacology ; Cyclic AMP/metabolism ; Dopamine/metabolism ; Dopamine Agonists/*pharmacology ; Dopamine Antagonists/pharmacology ; Down-Regulation ; Female ; Haloperidol/*pharmacology ; Haplorhini ; Memory/*drug effects ; Prefrontal Cortex/drug effects/metabolism ; Psychomotor Performance/drug effects ; Pyridines/*pharmacology ; Receptors, Dopamine D1/agonists/*metabolism ; Signal Transduction ; Tetrahydronaphthalenes/*pharmacology ; Time Factors
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    Neuroimaging evidence for dissociable forms of repetition priming (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-02-26
    Description: Repetition priming has been characterized neurophysiologically as a decreased response following stimulus repetition. The present study used event-related functional magnetic resonance imaging to investigate whether this repetition-related response is sensitive to stimulus familiarity. A right fusiform region exhibited an attenuated response to the repetition of familiar stimuli, both faces and symbols, but exhibited an enhanced response to the repetition of unfamiliar stimuli. Moreover, both repetition effects were modulated by lag between successive presentations. Further experiments replicated the interactions between repetition, familiarity, and lag and demonstrated the persistence of these effects over multiple repetitions. Priming-related responses are therefore not unitary but depend on the presence or absence of preexisting stimulus representations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Henson, R -- Shallice, T -- Dolan, R -- New York, N.Y. -- Science. 2000 Feb 18;287(5456):1269-72.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wellcome Department of Cognitive Neurology, Institute of Neurology, Institute of Cognitive Neuroscience and Department of Psychology, University College London, London WC1E 6BT, UK. r.henson@ucl.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10678834" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Brain Mapping ; Face ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Memory/*physiology ; *Pattern Recognition, Visual ; Regression Analysis ; Temporal Lobe/*physiology ; Time Factors
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  • 47
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    Role for rapid dendritic protein synthesis in hippocampal mGluR-dependent long-term depression (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-05-20
    Description: A hippocampal pyramidal neuron receives more than 10(4) excitatory glutamatergic synapses. Many of these synapses contain the molecular machinery for messenger RNA translation, suggesting that the protein complement (and thus function) of each synapse can be regulated on the basis of activity. Here, local postsynaptic protein synthesis, triggered by synaptic activation of metabotropic glutamate receptors, was found to modify synaptic transmission within minutes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huber, K M -- Kayser, M S -- Bear, M F -- New York, N.Y. -- Science. 2000 May 19;288(5469):1254-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Neuroscience, Brown University, Providence, RI 02912, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10818003" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acids/pharmacology ; Animals ; Anisomycin/pharmacology ; Dendrites/drug effects/*metabolism ; Electric Stimulation ; Excitatory Amino Acid Antagonists/pharmacology ; Hippocampus/*metabolism/physiology ; Methoxyhydroxyphenylglycol/analogs & derivatives/pharmacology ; Nerve Tissue Proteins/antagonists & inhibitors/*biosynthesis/genetics ; Neural Inhibition/drug effects/*physiology ; Protein Biosynthesis/drug effects ; Protein Synthesis Inhibitors/pharmacology ; RNA, Messenger/metabolism ; Rats ; Receptors, Metabotropic Glutamate/*physiology ; Synaptic Transmission/drug effects/physiology ; Xanthenes/pharmacology
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    Learning-induced LTP in neocortex (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-10-20
    Description: The hypothesis that learning occurs through long-term potentiation (LTP)- and long-term depression (LTD)-like mechanisms is widely held but unproven. This hypothesis makes three assumptions: Synapses are modifiable, they modify with learning, and they strengthen through an LTP-like mechanism. We previously established the ability for synaptic modification and a synaptic strengthening with motor skill learning in horizontal connections of the rat motor cortex (MI). Here we investigated whether learning strengthened these connections through LTP. We demonstrated that synapses in the trained MI were near the ceiling of their modification range, compared with the untrained MI, but the range of synaptic modification was not affected by learning. In the trained MI, LTP was markedly reduced and LTD was enhanced. These results are consistent with the use of LTP to strengthen synapses during learning.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rioult-Pedotti, M S -- Friedman, D -- Donoghue, J P -- NS27164/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2000 Oct 20;290(5491):533-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, Brown University, Providence, RI 02912, USA. mengia_rioult@brown.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11039938" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Electric Stimulation ; Female ; Learning/*physiology ; Long-Term Potentiation/*physiology ; Models, Neurological ; Motor Cortex/*physiology ; Motor Skills ; Neuronal Plasticity ; Rats ; Rats, Sprague-Dawley ; Synapses/*physiology ; Synaptic Transmission
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    Neurobiology. Receptors as kissing cousins (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-04-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Milligan, G -- New York, N.Y. -- Science. 2000 Apr 7;288(5463):65-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biochemistry and Molecular Biology, Institute of Biomedical and Life Sciences, University of Glasgow, Scotland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10766637" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclase Inhibitors ; Adenylyl Cyclases/metabolism ; Animals ; Cell Line ; Cerebral Cortex/metabolism ; Corpus Striatum/metabolism ; Dimerization ; Energy Transfer ; Fluorescence ; GTP-Binding Proteins/*metabolism ; Ligands ; Rats ; Receptor Cross-Talk ; Receptors, Dopamine D1/metabolism ; Receptors, Dopamine D2/agonists/*metabolism ; Receptors, Dopamine D5 ; Receptors, GABA-A/metabolism ; Receptors, Somatostatin/agonists/*metabolism ; Signal Transduction ; Somatostatin/metabolism
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  • 50
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    "Fluorescent timer": protein that changes color with time (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-11-25
    Description: We generated a mutant of the red fluorescent protein drFP583. The mutant (E5) changes its fluorescence from green to red over time. The rate of color conversion is independent of protein concentration and therefore can be used to trace time-dependent expression. We used in vivo labeling with E5 to measure expression from the heat shock-dependent promoter in Caenorhabditis elegans and from the Otx-2 promoter in developing Xenopus embryos. Thus, E5 is a "fluorescent timer" that can be used to monitor both activation and down-regulation of target promoters on the whole-organism scale.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Terskikh, A -- Fradkov, A -- Ermakova, G -- Zaraisky, A -- Tan, P -- Kajava, A V -- Zhao, X -- Lukyanov, S -- Matz, M -- Kim, S -- Weissman, I -- Siebert, P -- 1 RO3 TW01362-01/TW/FIC NIH HHS/ -- New York, N.Y. -- Science. 2000 Nov 24;290(5496):1585-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Medicine, Stanford University, Stanford, CA 94305, USA. Alexey.Terskikh@Stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11090358" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/embryology/metabolism ; Caenorhabditis elegans/embryology/genetics ; Cell Line ; Color ; Fluorescence ; Gene Expression Profiling/*methods ; *Gene Expression Regulation ; Gene Expression Regulation, Developmental ; Heat-Shock Proteins/genetics ; *Homeodomain Proteins ; Humans ; Luminescent Proteins/*chemistry/*genetics/metabolism ; Mutation ; Nerve Tissue Proteins/genetics ; Otx Transcription Factors ; *Promoter Regions, Genetic ; Temperature ; Time Factors ; Trans-Activators/genetics ; Xenopus laevis/embryology
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    Waiting for organ transplantation. Institute of Medicine Committee on Organ Transplantation (2000)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2000-02-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibbons, R D -- Meltzer, D -- Duan, N -- New York, N.Y. -- Science. 2000 Jan 14;287(5451):237-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Illinois at Chicago, Chicago, IL 60612, USA. rdgib@uic.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10660422" target="_blank"〉PubMed〈/a〉
    Keywords: *Government Regulation ; Health Policy ; Humans ; Institute of Medicine (U.S.) ; *Liver Transplantation/mortality ; *Organ Transplantation/mortality ; *Patient Selection ; *Resource Allocation ; Time Factors ; *Tissue and Organ Procurement/legislation & jurisprudence/standards ; United States
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    Evolution. Parasites make scaredy-rats foolhardy (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-08-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zimmer, C -- New York, N.Y. -- Science. 2000 Jul 28;289(5479):525-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10939959" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Behavior, Animal ; Biological Evolution ; *Fear ; Female ; Humans ; Male ; *Personality ; Rats ; Toxoplasma/*physiology ; Toxoplasmosis, Animal/parasitology/*psychology ; Toxoplasmosis, Cerebral/parasitology/*psychology
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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
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    Neurobiology. A new clue to how alcohol damages brains (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-02-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 2000 Feb 11;287(5455):947-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10691562" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Benzodiazepines/adverse effects/toxicity ; Brain/cytology/*drug effects/growth & development ; Ethanol/blood/*toxicity ; Female ; Humans ; Infant, Newborn ; Nerve Degeneration ; Neurons/cytology/*drug effects ; Pregnancy ; Rats ; Receptors, GABA/*drug effects/metabolism ; Receptors, N-Methyl-D-Aspartate/antagonists & inhibitors/*drug effects/metabolism
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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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    An early taste of things to come (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-09-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marcus, M -- New York, N.Y. -- Science. 2000 Sep 15;289(5486):1878.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11012357" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn/physiology ; Embryonic and Fetal Development ; Female ; *Food Preferences/physiology ; Humans ; Rats ; *Taste
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    Climate change. Recent reductions in China's greenhouse gas emissions (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Streets, D G -- Jiang, K -- Hu, X -- Sinton, J E -- Zhang, X Q -- Xu, D -- Jacobson, M Z -- Hansen, J E -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1835-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Decision and Information Sciences Division, Argonne National Laboratory, Argonne, IL 60439, USA. dstreets@anl.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729288" target="_blank"〉PubMed〈/a〉
    Keywords: Bioelectric Energy Sources/economics ; Carbon Dioxide/*metabolism ; China ; Coal/economics ; *Conservation of Energy Resources/economics ; Electricity ; *Energy-Generating Resources/economics ; *Greenhouse Effect ; Methane/metabolism ; Time Factors ; Wood
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    A transcriptional switch mediated by cofactor methylation (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-10
    Description: We describe a molecular switch based on the controlled methylation of nucleosome and the transcriptional cofactors, the CREB-binding proteins (CBP)/p300. The CBP/p300 methylation site is localized to an arginine residue that is essential for stabilizing the structure of the KIX domain, which mediates CREB recruitment. Methylation of KIX by coactivator-associated arginine methyltransferase 1 (CARM1) blocks CREB activation by disabling the interaction between KIX and the kinase inducible domain (KID) of CREB. Thus, CARM1 functions as a corepressor in cyclic adenosine monophosphate signaling pathway via its methyltransferase activity while acting as a coactivator for nuclear hormones. These results provide strong in vivo and in vitro evidence that histone methylation plays a key role in hormone-induced gene activation and define cofactor methylation as a new regulatory mechanism in hormone signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xu, W -- Chen, H -- Du, K -- Asahara, H -- Tini, M -- Emerson, B M -- Montminy, M -- Evans, R M -- 9R01DK57978/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2001 Dec 21;294(5551):2507-11. Epub 2001 Nov 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Gene Expression Laboratory, Department of Biological Chemistry, University of California Davis Cancer Center/Basic Science, Sacramento, CA 95817, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11701890" target="_blank"〉PubMed〈/a〉
    Keywords: Acetyltransferases/metabolism ; Amino Acid Sequence ; Animals ; Apoptosis ; Cell Line ; Cyclic AMP Response Element-Binding Protein/metabolism ; Dimerization ; E1A-Associated p300 Protein ; *Gene Expression Regulation ; Genes, Reporter ; Histone Acetyltransferases ; Histones/metabolism ; Methylation ; Molecular Sequence Data ; Nerve Growth Factor/pharmacology ; Nuclear Proteins/chemistry/*metabolism ; PC12 Cells ; Protein Structure, Tertiary ; Protein-Arginine N-Methyltransferases/*metabolism ; Rats ; Receptors, Retinoic Acid/*metabolism ; Recombinant Fusion Proteins/metabolism ; Retinoid X Receptors ; *Saccharomyces cerevisiae Proteins ; Signal Transduction ; Somatostatin/genetics ; Trans-Activators/chemistry/*metabolism ; Transcription Factors/metabolism ; *Transcription, Genetic ; Transcriptional Activation ; Transfection ; Tretinoin/metabolism/pharmacology
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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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    Molecular mechanisms of the biological clock in cultured fibroblasts (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-17
    Description: In mammals, the central circadian pacemaker resides in the hypothalamic suprachiasmatic nucleus (SCN), but circadian oscillators also exist in peripheral tissues. Here, using wild-type and cryptochrome (mCry)-deficient cell lines derived from mCry mutant mice, we show that the peripheral oscillator in cultured fibroblasts is identical to the oscillator in the SCN in (i) temporal expression profiles of all known clock genes, (ii) the phase of the various mRNA rhythms (i.e., antiphase oscillation of Bmal1 and mPer genes), (iii) the delay between maximum mRNA levels and appearance of nuclear mPER1 and mPER2 protein, (iv) the inability to produce oscillations in the absence of functional mCry genes, and (v) the control of period length by mCRY proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yagita, K -- Tamanini, F -- van Der Horst, G T -- Okamura, H -- New York, N.Y. -- Science. 2001 Apr 13;292(5515):278-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Brain Science, Department of Brain Sciences, Kobe University Graduate School of Medicine, Chuo-ku, Kobe 650-0017, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11303101" target="_blank"〉PubMed〈/a〉
    Keywords: ARNTL Transcription Factors ; Animals ; Basic Helix-Loop-Helix Transcription Factors ; Biological Clocks/*genetics ; CLOCK Proteins ; Cell Cycle Proteins ; Cell Line ; Cell Nucleus/metabolism ; Circadian Rhythm/*genetics ; Cryptochromes ; *DNA-Binding Proteins ; *Drosophila Proteins ; Endothelin-1/pharmacology ; *Eye Proteins ; Fibroblasts/*physiology ; Flavoproteins/genetics/metabolism ; Gene Expression Profiling ; *Gene Expression Regulation ; Nuclear Proteins/genetics/metabolism ; Period Circadian Proteins ; *Photoreceptor Cells, Invertebrate ; RNA, Messenger/genetics/metabolism ; Rats ; Receptors, G-Protein-Coupled ; Suprachiasmatic Nucleus/metabolism ; Time Factors ; Trans-Activators/genetics/metabolism ; Transcription Factors/genetics/metabolism
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    Short-term trials and long-term effects (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-10-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Daniels, S R -- New York, N.Y. -- Science. 2001 Sep 28;293(5539):2392-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11579936" target="_blank"〉PubMed〈/a〉
    Keywords: Antihypertensive Agents/*therapeutic use ; *Controlled Clinical Trials as Topic ; Follow-Up Studies ; Humans ; Hypertension/*drug therapy ; Meta-Analysis as Topic ; *Placebos/adverse effects ; Time Factors
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    Molecular imaging. Virus infects cell: live and uncut (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beckman, M -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1803.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729272" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Nucleus/*virology ; Cytoplasm/*virology ; Dependovirus/*physiology ; Fluorescence ; Genetic Vectors/physiology ; Host-Parasite Interactions/physiology ; Humans ; Microscopy, Fluorescence/methods ; Spectrometry, Fluorescence/*methods ; Time Factors
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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)
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    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
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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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    An experiment for all seasons (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, J -- New York, N.Y. -- Science. 2001 Jul 27;293(5530):624-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11474094" target="_blank"〉PubMed〈/a〉
    Keywords: Agriculture ; Animals ; Databases, Factual ; *Ecology ; *Ecosystem ; Government Agencies ; International Cooperation ; Internet ; Plants ; Research Support as Topic ; Software ; Time Factors ; Trees ; Weather
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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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    Bioinformatics. Reality simulation--observe while it happens (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berendsen, H J -- New York, N.Y. -- Science. 2001 Dec 14;294(5550):2304-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Nijenborgh 4, 9747 AG Groningen, Netherlands. berendsen@chem.rug.nl〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11743188" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Aquaporin 1 ; Aquaporins/chemistry/*metabolism ; Bacterial Outer Membrane Proteins/chemistry/*metabolism ; Cell Membrane Permeability ; *Computational Biology ; *Computer Simulation ; *Escherichia coli Proteins ; Hydrogen Bonding ; Kinetics ; Lipid Bilayers ; *Models, Biological ; Permeability ; Static Electricity ; Time Factors ; Water/*metabolism
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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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
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Divining a forest's future from its past (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, J -- New York, N.Y. -- Science. 2001 Jul 27;293(5530):626.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11474096" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carbon Dioxide ; Disasters ; Ecology ; *Ecosystem ; Financing, Government ; Government Agencies ; Massachusetts ; Research Support as Topic ; Time Factors ; *Trees
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    Real-time single-molecule imaging of the infection pathway of an adeno-associated virus (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-01
    Description: We describe a method, based on single-molecule imaging, that allows the real-time visualization of the infection pathway of single viruses in living cells, each labeled with only one fluorescent dye molecule. The tracking of single viruses removes ensemble averaging. Diffusion trajectories with high spatial and time resolution show various modes of motion of adeno-associated viruses (AAV) during their infection pathway into living HeLa cells: (i) consecutive virus touching at the cell surface and fast endocytosis; (ii) free and anomalous diffusion of the endosome and the virus in the cytoplasm and the nucleus; and (iii) directed motion by motor proteins in the cytoplasm and in nuclear tubular structures. The real-time visualization of the infection pathway of single AAVs shows a much faster infection than was generally observed so far.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Seisenberger, G -- Ried, M U -- Endress, T -- Buning, H -- Hallek, M -- Brauchle, C -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1929-32.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department Chemie, Ludwig-Maximilians-Universitat Munchen, Butenandtstrasse 11, D-81377 Munchen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729319" target="_blank"〉PubMed〈/a〉
    Keywords: Adsorption ; Biological Transport ; Cell Nucleus/*virology ; Cell Survival ; Cytoplasm/*virology ; Dependovirus/*physiology ; Diffusion ; Endocytosis ; Endosomes/virology ; Fluorescence ; Fluorescent Dyes/metabolism ; Genetic Vectors/physiology ; HeLa Cells ; Host-Parasite Interactions/physiology ; Humans ; Microscopy, Fluorescence/*methods ; Molecular Motor Proteins/metabolism ; Movement ; Nocodazole/pharmacology ; Spectrometry, Fluorescence/*methods ; Time Factors
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    Visualizing science. New imaging tools put the art back into science (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-05-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lawler, A -- New York, N.Y. -- Science. 2001 May 11;292(5519):1044-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11352044" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Computer Graphics ; *Computer Simulation ; Computers ; Fractals ; Image Processing, Computer-Assisted/*methods ; Internet ; Microscopy, Video ; Motion Pictures as Topic ; Publishing ; Reproducibility of Results ; Software ; Time Factors
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Dominant-negative mutants of a toxin subunit: an approach to therapy of anthrax (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-28
    Description: The protective antigen moiety of anthrax toxin translocates the toxin's enzymic moieties to the cytosol of mammalian cells by a mechanism that depends on its ability to heptamerize and insert into membranes. We identified dominant-negative mutants of protective antigen that co-assemble with the wild-type protein and block its ability to translocate the enzymic moieties across membranes. These mutants strongly inhibited toxin action in cell culture and in an animal intoxication model, suggesting that they could be useful in therapy of anthrax.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sellman, B R -- Mourez, M -- Collier, R J -- 5T32AI07410/AI/NIAID NIH HHS/ -- R37-AI22021/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2001 Apr 27;292(5517):695-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Molecular Genetics, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11326092" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anthrax/*drug therapy ; *Antigens, Bacterial ; Bacterial Toxins/*antagonists & inhibitors/*genetics/metabolism/toxicity ; CHO Cells ; Cell Membrane/metabolism ; Cricetinae ; Endocytosis ; Genes, Dominant ; Male ; *Mutation ; Protein Transport ; Rats ; Rats, Inbred F344 ; Receptors, Peptide/metabolism
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    Endangered right whales on the southeastern Bering Sea shelf (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tynan, C T -- DeMaster, D P -- Peterson, W T -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1894.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Northwest Fisheries Science Center (NWFSC), National Oceanic and Atmospheric Administration (NOAA), Seattle, WA 98112, USA. Cynthia.Tynan@noaa.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729308" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Migration ; Animals ; *Ecosystem ; *Environment ; Food Chain ; *Geography ; Pacific Ocean ; Seawater ; Survival Rate ; Temperature ; Time Factors ; Whales/*physiology
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    Where the grass never stops growing (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pickrell, J -- New York, N.Y. -- Science. 2001 Jul 27;293(5530):625.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11474095" target="_blank"〉PubMed〈/a〉
    Keywords: Ecology ; *Ecosystem ; England ; *Fertilizers ; Poaceae/*growth & development ; Time Factors
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    Control of synapse number by glia (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-07
    Description: Although astrocytes constitute nearly half of the cells in our brain, their function is a long-standing neurobiological mystery. Here we show by quantal analyses, FM1-43 imaging, immunostaining, and electron microscopy that few synapses form in the absence of glial cells and that the few synapses that do form are functionally immature. Astrocytes increase the number of mature, functional synapses on central nervous system (CNS) neurons by sevenfold and are required for synaptic maintenance in vitro. We also show that most synapses are generated concurrently with the development of glia in vivo. These data demonstrate a previously unknown function for glia in inducing and stabilizing CNS synapses, show that CNS synapse number can be profoundly regulated by nonneuronal signals, and raise the possibility that glia may actively participate in synaptic plasticity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ullian, E M -- Sapperstein, S K -- Christopherson, K S -- Barres, B A -- NS10784/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2001 Jan 26;291(5504):657-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stanford University School of Medicine, Department of Neurobiology, Fairchild Science Building, Stanford, CA 94305-5125, USA. emu@stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11158678" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Astrocytes/*physiology ; Calcium/metabolism ; *Calcium-Binding Proteins ; Cell Communication ; Cells, Cultured ; Coculture Techniques ; Excitatory Postsynaptic Potentials ; Fluorescent Dyes/metabolism ; Glutamic Acid/pharmacology ; Ionomycin/pharmacology ; Membrane Glycoproteins/metabolism ; Microscopy, Electron ; Nerve Tissue Proteins/metabolism ; Neuronal Plasticity ; Patch-Clamp Techniques ; Pyridinium Compounds/metabolism ; Quaternary Ammonium Compounds/metabolism ; Rats ; Rats, Sprague-Dawley ; Retinal Ganglion Cells/*physiology/ultrastructure ; Superior Colliculi/embryology/growth & development/ultrastructure ; Synapses/*physiology/ultrastructure ; Synaptic Transmission ; Synaptic Vesicles/metabolism ; Synaptophysin/metabolism ; Synaptotagmins
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    Botany. Patience yields secrets of seed longevity (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brown, K -- New York, N.Y. -- Science. 2001 Mar 9;291(5510):1884-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11245184" target="_blank"〉PubMed〈/a〉
    Keywords: Angiosperms/growth & development/*physiology ; Ecosystem ; Seasons ; Seeds/growth & development/*physiology ; Time Factors
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    Disasters. Volcano fatalities--lessons from the historical record (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Simkin, T -- Siebert, L -- Blong, R -- New York, N.Y. -- Science. 2001 Jan 12;291(5502):255.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Museum of Natural History, Smithsonian Institution, Washington, DC 20560-0119, USA. simkin@nmnh.si.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11253213" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; *Mortality ; Time Factors ; Volcanic Eruptions/*statistics & numerical data
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    Changes in forest biomass carbon storage in China between 1949 and 1998 (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-26
    Description: The location and mechanisms responsible for the carbon sink in northern mid-latitude lands are uncertain. Here, we used an improved estimation method of forest biomass and a 50-year national forest resource inventory in China to estimate changes in the storage of living biomass between 1949 and 1998. Our results suggest that Chinese forests released about 0.68 petagram of carbon between 1949 and 1980, for an annual emission rate of 0.022 petagram of carbon. Carbon storage increased significantly after the late 1970s from 4.38 to 4.75 petagram of carbon by 1998, for a mean accumulation rate of 0.021 petagram of carbon per year, mainly due to forest expansion and regrowth. Since the mid-1970s, planted forests (afforestation and reforestation) have sequestered 0.45 petagram of carbon, and their average carbon density increased from 15.3 to 31.1 megagrams per hectare, while natural forests have lost an additional 0.14 petagram of carbon, suggesting that carbon sequestration through forest management practices addressed in the Kyoto Protocol could help offset industrial carbon dioxide emissions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fang, J -- Chen, A -- Peng, C -- Zhao, S -- Ci, L -- New York, N.Y. -- Science. 2001 Jun 22;292(5525):2320-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Urban and Environmental Science, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing 100871, China. jyfang@urban.pku.edu.cn〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11423660" target="_blank"〉PubMed〈/a〉
    Keywords: *Biomass ; *Carbon ; Carbon Dioxide ; China ; Conservation of Natural Resources ; Forestry ; Time Factors ; *Trees
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    Dendrodendritic inhibition through reversal of dopamine transport (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-29
    Description: Synapses in the central nervous system are usually defined by presynaptic exocytotic release sites and postsynaptic differentiations. We report here a demonstration of dendrodendritic inhibition that does not engage a conventional synapse. Using amperometric and patch-clamp recordings in rat brain slices of the substantia nigra, we found that blockade of the dopamine transporter abolished the dendritic release of dopamine and the resulting self-inhibition. These findings demonstrate that dendrodendritic autoinhibition entails the carrier-mediated release of dopamine rather than conventional exocytosis. This suggests that some widely used antidepressants that inhibit the dopamine transporter may benefit patients in the early stages of Parkinson's disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Falkenburger, B H -- Barstow, K L -- Mintz, I M -- R01-3445/PHS HHS/ -- New York, N.Y. -- Science. 2001 Sep 28;293(5539):2465-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology and Experimental Therapeutics, Boston University Medical Center, Boston, MA 02118, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11577238" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Transport/drug effects ; Calcium/metabolism ; Carrier Proteins/antagonists & inhibitors/*metabolism ; Dendrites/*metabolism ; Dopamine/*metabolism ; Dopamine D2 Receptor Antagonists ; Dopamine Plasma Membrane Transport Proteins ; Electric Stimulation ; Electrophysiology ; Evoked Potentials/drug effects ; Excitatory Postsynaptic Potentials ; Exocytosis ; Glutamic Acid/pharmacology ; Humans ; In Vitro Techniques ; *Membrane Glycoproteins ; Membrane Potentials ; *Membrane Transport Proteins ; *Nerve Tissue Proteins ; Neural Inhibition ; Neurons/metabolism ; Parkinson Disease/drug therapy/metabolism ; Patch-Clamp Techniques ; Piperazines/pharmacology ; Rats ; Receptors, Dopamine D2/metabolism ; Sodium/metabolism ; Substantia Nigra/cytology/*metabolism ; Subthalamic Nucleus/physiology
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    Impulsive choice induced in rats by lesions of the nucleus accumbens core (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-05-26
    Description: Impulsive choice is exemplified by choosing a small or poor reward that is available immediately, in preference to a larger but delayed reward. Impulsive choice contributes to drug addiction, attention-deficit/hyperactivity disorder, mania, and personality disorders, but its neuroanatomical basis is unclear. Here, we show that selective lesions of the nucleus accumbens core induce persistent impulsive choice in rats. In contrast, damage to two of its afferents, the anterior cingulate cortex and medial prefrontal cortex, had no effect on this capacity. Thus, dysfunction of the nucleus accumbens core may be a key element in the neuropathology of impulsivity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cardinal, R N -- Pennicott, D R -- Sugathapala, C L -- Robbins, T W -- Everitt, B J -- G9537855/Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2001 Jun 29;292(5526):2499-501. Epub 2001 May 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Experimental Psychology, University of Cambridge, Downing Street, Cambridge CB2 3EB, UK. rudolf.cardinal@pobox.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11375482" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Attention ; Attention Deficit Disorder with Hyperactivity ; Behavior, Animal ; Brain Mapping ; *Choice Behavior ; Disease Models, Animal ; Gyrus Cinguli/physiology ; *Impulsive Behavior ; Motor Activity ; Nucleus Accumbens/*physiology/surgery ; Prefrontal Cortex/physiology ; Random Allocation ; Rats ; Reinforcement (Psychology) ; Reward
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    Gene therapy. Safer and virus-free? (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ferber, D -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1638-42.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11721029" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biolistics ; Blood Pressure ; Clinical Trials as Topic ; Coronary Artery Disease/genetics/therapy ; DNA/administration & dosage/genetics ; Electroporation ; Gene Expression ; Gene Transfer Techniques/*trends ; Genetic Therapy/*methods/trends ; Genetic Vectors/*administration & dosage/*adverse effects/genetics ; Hemophilia A/genetics/therapy ; Humans ; Injections, Intra-Arterial ; Melanoma/genetics/therapy ; Microinjections ; Muscular Dystrophies/genetics/therapy ; Organ Specificity ; Plasmids/administration & dosage/genetics ; RNA/administration & dosage/genetics ; Time Factors ; Transfection ; Transgenes/genetics ; Viruses/genetics/pathogenicity
    Print ISSN: 0036-8075
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    Relapse to cocaine-seeking after hippocampal theta burst stimulation (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-05-12
    Description: Treatment efforts for cocaine addiction are hampered by high relapse rates. To map brain areas underlying relapse, we used electrical brain stimulation and intracranial injection of pharmacological compounds after extinction of cocaine self-administration behavior in rats. Electrical stimulation of the hippocampus containing glutamatergic fibers, but not the medial forebrain bundle containing dopaminergic fibers, elicited cocaine-seeking behavior dependent on glutamate in the ventral tegmental area. This suggests a role for glutamatergic neurotransmission in relapse to cocaine abuse. The medial forebrain bundle electrodes supported intense electrical self-stimulation. These findings suggest a dissociation of neural systems subserving positive reinforcement (self-stimulation) and incentive motivation (relapse).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vorel, S R -- Liu, X -- Hayes, R J -- Spector, J A -- Gardner, E L -- New York, N.Y. -- Science. 2001 May 11;292(5519):1175-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, Department of Psychiatry and Behavioral Sciences, Albert Einstein College of Medicine, Bronx, NY 10461, USA. robvorel@hotmail.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11349151" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cocaine/administration & dosage/pharmacology ; Cocaine-Related Disorders/*physiopathology/prevention & control ; Conditioning, Operant/drug effects/physiology ; Dopamine/physiology ; Electric Stimulation ; Electrodes ; Excitatory Amino Acid Agonists/pharmacology ; Excitatory Amino Acid Antagonists/pharmacology ; Extinction, Psychological/drug effects/physiology ; Glutamic Acid/*physiology ; Hippocampus/cytology/*physiology ; Injections, Intravenous ; Kynurenic Acid/pharmacology ; Medial Forebrain Bundle/cytology/drug effects/physiology ; Memory/physiology ; N-Methylaspartate/pharmacology ; Rats ; Rats, Long-Evans ; Recurrence ; Reward ; Self Administration ; Synaptic Transmission/drug effects ; *Theta Rhythm ; Ventral Tegmental Area/cytology/drug effects/physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Neurobiology. Total recall-the memory of addiction (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nestler, E J -- New York, N.Y. -- Science. 2001 Jun 22;292(5525):2266-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychiatry and Center for Basic Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX 75390--9070, USA. eric.nestler@utsouthwestern.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11423644" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/drug effects/physiology/physiopathology ; Calcium/metabolism ; Calcium Signaling ; Cocaine/*pharmacology ; Cocaine-Related Disorders/*physiopathology ; Dopamine/metabolism ; Glutamic Acid/metabolism ; Hippocampus/physiology ; *Long-Term Potentiation ; Memory/*physiology ; Neurons/*drug effects/physiology ; Rats ; Receptors, AMPA/metabolism ; Receptors, N-Methyl-D-Aspartate/metabolism ; Synaptic Transmission/drug effects ; Ventral Tegmental Area/*drug effects/physiology
    Print ISSN: 0036-8075
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  • 85
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    Paleoclimate. Dating--vive la difference (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adkins, J -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1844-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉California Institute of Technology, Pasadena, CA 91125, USA. jess@gps.caltech.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729292" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atlantic Ocean ; *Atmosphere ; Calibration ; Carbon/metabolism ; Carbon Dioxide/metabolism ; Carbon Radioisotopes/metabolism ; Cold Climate ; Cosmic Radiation ; Geologic Sediments/*analysis/chemistry/parasitology ; Greenland ; Half-Life ; Ice ; Plankton/metabolism ; *Seawater ; Temperature ; Time Factors ; Volcanic Eruptions
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  • 86
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    Effects of marine reserves on adjacent fisheries (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-01
    Description: Marine reserves have been widely promoted as conservation and fishery management tools. There are robust demonstrations of conservation benefits, but fishery benefits remain controversial. We show that marine reserves in Florida (United States) and St. Lucia have enhanced adjacent fisheries. Within 5 years of creation, a network of five small reserves in St. Lucia increased adjacent catches of artisanal fishers by between 46 and 90%, depending on the type of gear the fishers used. In Florida, reserve zones in the Merritt Island National Wildlife Refuge have supplied increasing numbers of world record-sized fish to adjacent recreational fisheries since the 1970s. Our study confirms theoretical predictions that marine reserves can play a key role in supporting fisheries.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, C M -- Bohnsack, J A -- Gell, F -- Hawkins, J P -- Goodridge, R -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1920-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Organismic and Evolutionary Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA. cr10@york.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729316" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Aged ; Aged, 80 and over ; Animals ; Biomass ; Cnidaria/physiology ; Conservation of Natural Resources/*methods ; *Ecosystem ; Fisheries/*methods/statistics & numerical data ; *Fishes/physiology ; Florida ; Humans ; Middle Aged ; Saint Lucia ; Time Factors
    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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  • 87
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    The foot-and-mouth epidemic in Great Britain: pattern of spread and impact of interventions (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-17
    Description: We present an analysis of the current foot-and-mouth disease epidemic in Great Britain over the first 2 months of the spread of the virus. The net transmission potential of the pathogen and the increasing impact of control measures are estimated over the course of the epidemic to date. These results are used to parameterize a mathematical model of disease transmission that captures the differing spatial contact patterns between farms before and after the imposition of movement restrictions. The model is used to make predictions of future incidence and to simulate the impact of additional control strategies. Hastening the slaughter of animals with suspected infection is predicted to slow the epidemic, but more drastic action, such as "ring" culling or vaccination around infection foci, is necessary for more rapid control. Culling is predicted to be more effective than vaccination.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ferguson, N M -- Donnelly, C A -- Anderson, R M -- New York, N.Y. -- Science. 2001 May 11;292(5519):1155-60. Epub 2001 Apr 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Infectious Disease Epidemiology, Imperial College School of Medicine, St. Mary's Campus, Norfolk Place, London W2 1PG, UK. Neil.Ferguson@ic.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11303090" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Domestic/virology ; Aphthovirus/physiology ; Cattle ; Commerce ; Disease Reservoirs ; Foot-and-Mouth Disease/economics/epidemiology/*prevention & control/*transmission ; Great Britain/epidemiology ; Incidence ; Models, Biological ; Quarantine ; Sheep/virology ; Swine/virology ; Time Factors ; Vaccination/economics
    Print ISSN: 0036-8075
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  • 88
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    Drug addiction. Zapping memory center triggers drug craving (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-05-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holden, C -- New York, N.Y. -- Science. 2001 May 11;292(5519):1039.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11352038" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cocaine/administration & dosage/pharmacology ; Cocaine-Related Disorders/*physiopathology ; Conditioning, Operant/drug effects/physiology ; Dopamine/physiology ; Electric Stimulation ; Extinction, Psychological/drug effects/physiology ; Glutamic Acid/*physiology ; Hippocampus/drug effects/*physiology ; Injections, Intravenous ; Medial Forebrain Bundle/drug effects/physiology ; Memory/*physiology ; Rats ; Recurrence ; Reward ; Self Administration ; Ventral Tegmental Area/drug effects/physiology
    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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  • 89
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    Animal welfare. Congress clears way for rodent rules (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Malakoff, D -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1637.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11721028" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Experimentation ; Animal Rights/economics/legislation & jurisprudence ; Animal Welfare/economics/*legislation & jurisprudence ; Animals ; Birds ; Government ; *Government Regulation ; Housing, Animal/economics/legislation & jurisprudence ; Mice ; *Models, Animal ; Rats ; Research Design/legislation & jurisprudence ; *Rodentia ; United States ; United States Department of Agriculture/*legislation & jurisprudence
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  • 90
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    The influence of the proinflammatory cytokine, osteopontin, on autoimmune demyelinating disease (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-27
    Description: Multiple sclerosis is a demyelinating disease, characterized by inflammation in the brain and spinal cord, possibly due to autoimmunity. Large-scale sequencing of cDNA libraries, derived from plaques dissected from brains of patients with multiple sclerosis (MS), indicated an abundance of transcripts for osteopontin (OPN). Microarray analysis of spinal cords from rats paralyzed by experimental autoimmune encephalomyelitis (EAE), a model of MS, also revealed increased OPN transcripts. Osteopontin-deficient mice were resistant to progressive EAE and had frequent remissions, and myelin-reactive T cells in OPN-/- mice produced more interleukin 10 and less interferon-gamma than in OPN+/+ mice. Osteopontin thus appears to regulate T helper cell-1 (TH1)-mediated demyelinating disease, and it may offer a potential target in blocking development of progressive MS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chabas, D -- Baranzini, S E -- Mitchell, D -- Bernard, C C -- Rittling, S R -- Denhardt, D T -- Sobel, R A -- Lock, C -- Karpuj, M -- Pedotti, R -- Heller, R -- Oksenberg, J R -- Steinman, L -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1731-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology and Neurological Sciences, Beckman Center for Molecular Medicine, B002, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11721059" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Encephalomyelitis, Autoimmune, ; Experimental/genetics/immunology/metabolism/pathology ; Expressed Sequence Tags ; Gene Deletion ; *Gene Expression Profiling ; Gene Library ; Humans ; Inflammation/genetics/immunology/metabolism/pathology ; Interferon-gamma/genetics/metabolism ; Interleukin-10/genetics/metabolism ; Lymphocyte Activation ; Mice ; Mice, Knockout ; Multiple Sclerosis/*genetics/immunology/*metabolism/pathology ; Oligonucleotide Array Sequence Analysis ; Osteopontin ; RNA, Messenger/genetics/metabolism ; Rats ; Sialoglycoproteins/deficiency/genetics/*metabolism ; Spinal Cord/metabolism ; Th1 Cells/immunology
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  • 91
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    Synaptotagmin modulation of fusion pore kinetics in regulated exocytosis of dense-core vesicles (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-03
    Description: In the exocytosis of neurotransmitter, fusion pore opening represents the first instant of fluid contact between the vesicle lumen and extracellular space. The existence of the fusion pore has been established by electrical measurements, but its molecular composition is unknown. The possibility that synaptotagmin regulates fusion pores was investigated with amperometry to monitor exocytosis of single dense-core vesicles. Overexpression of synaptotagmin I prolonged the time from fusion pore opening to dilation, whereas synaptotagmin IV shortened this time. Both synaptotagmin isoforms reduced norepinephrine flux through open fusion pores. Thus, synaptotagmin interacts with fusion pores, possibly by associating with a core complex of membrane proteins and/or lipid.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, C T -- Grishanin, R -- Earles, C A -- Chang, P Y -- Martin, T F -- Chapman, E R -- Jackson, M B -- New York, N.Y. -- Science. 2001 Nov 2;294(5544):1111-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, University of Wisconsin Medical School, University of Wisconsin, Madison, WI 53706, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11691996" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/metabolism ; Calcium Channels, P-Type/metabolism ; Calcium Channels, Q-Type/metabolism ; *Calcium-Binding Proteins ; Cell Membrane Structures/*metabolism ; Chromogranins/metabolism ; Electrophysiology ; *Exocytosis ; Kinetics ; *Membrane Fusion ; Membrane Glycoproteins/*metabolism ; Membrane Potentials ; Nerve Tissue Proteins/*metabolism ; Neurotransmitter Agents/*metabolism ; Norepinephrine/metabolism ; PC12 Cells ; Protein Isoforms ; Rats ; Recombinant Fusion Proteins/metabolism ; Secretory Vesicles/*metabolism ; Synaptic Transmission ; Synaptic Vesicles/metabolism ; Synaptotagmin I ; Synaptotagmins
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    Medicine. Placebo-controls in short-term clinical trials of hypertension (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Al-Khatib, S M -- Califf, R M -- Hasselblad, V -- Alexander, J H -- McCrory, D C -- Sugarman, J -- New York, N.Y. -- Science. 2001 Jun 15;292(5524):2013-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Duke Clinical Research Institute, Durham, NC 27710, USA. alkha001@mc.duke.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11408643" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Antihypertensive Agents/*therapeutic use ; Bayes Theorem ; *Control Groups ; Ethics, Medical ; Humans ; Hypertension/*drug therapy ; Patient Selection ; *Placebos/adverse effects ; *Randomized Controlled Trials as Topic ; Risk Factors ; Time Factors
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  • 93
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    Archaeology. Questions arise over second Japanese site (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Normile, D -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1634.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11721025" target="_blank"〉PubMed〈/a〉
    Keywords: Age Determination by Skeleton ; Archaeology/*methods/*standards ; *Fossils ; Humans ; Japan ; Publishing/legislation & jurisprudence ; Reproducibility of Results ; Research Personnel/psychology/standards ; Suicide ; Time Factors
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  • 94
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    Assessing the reviewers of animal research (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rollin, B E -- Loew, F M -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1831-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11732546" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Care Committees ; Animal Experimentation ; Animal Rights ; Animal Welfare/*standards ; Animals ; Decision Making ; Ethical Review/*standards ; *Models, Animal ; Peer Review, Research/methods/*standards ; Reproducibility of Results ; Research Design/*standards ; Time Factors
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  • 95
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    Describing the release of sequence data (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-05-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉States, D J -- New York, N.Y. -- Science. 2001 May 11;292(5519):1066-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11352052" target="_blank"〉PubMed〈/a〉
    Keywords: Authorship ; Base Sequence ; Databases as Topic ; *Human Genome Project/economics ; Humans ; National Institutes of Health (U.S.) ; *Public Sector/economics ; *Publishing ; Time Factors ; United States
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  • 96
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    Climate change. Experts urge speedup to mine 'archives' (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koenig, R -- New York, N.Y. -- Science. 2001 Jul 6;293(5527):31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11441159" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Climate ; Cnidaria/physiology ; Conservation of Natural Resources ; Greenhouse Effect ; Humans ; Ice ; International Cooperation ; Oceans and Seas ; Specimen Handling/*methods ; Temperature ; Time Factors ; Trees/growth & development/physiology
    Print ISSN: 0036-8075
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  • 97
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    Compartmentalized and binary behavior of terminal dendrites in hippocampal pyramidal neurons (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-22
    Description: The dendritic arbor of pyramidal neurons is not a monolithic structure. We show here that the excitability of terminal apical dendrites differs from that of the apical trunk. In response to fluorescence-guided focal photolysis of caged glutamate, individual terminal apical dendrites generated cadmium-sensitive all-or-none responses that were subthreshold for somatic action potentials. Calcium transients produced by all-or-none responses were not restricted to the sites of photolysis, but occurred throughout individual distal dendritic compartments, indicating that electrogenesis is mediated primarily by voltage-gated calcium channels. Compartmentalized and binary behavior of parallel-connected terminal dendrites can greatly expand the computational power of a single neuron.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wei, D S -- Mei, Y A -- Bagal, A -- Kao, J P -- Thompson, S M -- Tang, C M -- New York, N.Y. -- Science. 2001 Sep 21;293(5538):2272-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Neurology, University of Maryland School of Medicine, Baltimore, MD 21201, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11567143" target="_blank"〉PubMed〈/a〉
    Keywords: 2-Amino-5-phosphonovalerate/pharmacology ; Action Potentials ; Animals ; Cadmium/pharmacology ; Calcium/metabolism ; Calcium Channels/metabolism ; Calcium Signaling ; Cesium/pharmacology ; Dendrites/*physiology ; Egtazic Acid/analogs & derivatives/pharmacology ; Glutamates ; Hippocampus/*cytology/physiology ; Light ; Organ Culture Techniques ; Patch-Clamp Techniques ; Photolysis ; Pyramidal Cells/drug effects/*physiology/ultrastructure ; Quinoxalines/pharmacology ; Rats ; Receptors, AMPA/metabolism ; Receptors, N-Methyl-D-Aspartate/metabolism ; Tetrodotoxin/pharmacology
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  • 98
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    A global paleoclimate observing system (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alverson, K -- Bradley, R -- Briffa, K -- Cole, J -- Hughes, M -- Larocque, I -- Pedersen, T -- Thompson, L -- Tudhope, S -- New York, N.Y. -- Science. 2001 Jul 6;293(5527):47-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11444288" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carbon Dioxide/metabolism ; *Climate ; Cnidaria/physiology ; Conservation of Natural Resources ; Greenhouse Effect ; Humans ; Ice ; Oceans and Seas ; Rain ; Seawater/analysis/chemistry ; Specimen Handling/*methods ; Temperature ; Time Factors ; Trees/growth & development/physiology
    Print ISSN: 0036-8075
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  • 99
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    Wording blurs survey on animal protection (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Garrison, H H -- New York, N.Y. -- Science. 2001 Feb 9;291(5506):986-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11232582" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Welfare/*legislation & jurisprudence ; Animals ; *Animals, Laboratory ; Birds ; Mice ; Rats ; *Research Personnel ; Surveys and Questionnaires ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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    Cell biology. Fusion without SNAREs? (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-03
    Description: Highly orchestrated molecular rearrangements are required for two membranes to fuse, as happens, for example, during neurotransmitter release into the synapse. In an elegant Perspective, Scales et al. discuss two studies (Schoch et al., Wang et al.) that shed new light on the protein interactions involved in membrane fusion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scales, S J -- Finley, M F -- Scheller, R H -- New York, N.Y. -- Science. 2001 Nov 2;294(5544):1015-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genentech Inc., South San Francisco, CA 94080, USA. sscales@gene.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11691976" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/metabolism ; Calcium Signaling ; *Calcium-Binding Proteins ; Catecholamines/metabolism ; Cell Membrane/metabolism ; Cells, Cultured ; Electrophysiology ; *Membrane Fusion ; Membrane Glycoproteins/*physiology ; Membrane Proteins/*physiology ; Mice ; Nerve Tissue Proteins/*physiology ; Neurotransmitter Agents/metabolism ; PC12 Cells ; Phospholipids/metabolism ; Protein Isoforms ; R-SNARE Proteins ; Rats ; SNARE Proteins ; Secretory Vesicles/*metabolism ; Synapses/physiology ; Synaptic Transmission ; Synaptic Vesicles/*metabolism ; Synaptotagmins ; *Vesicular Transport Proteins
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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