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  • Rats  (19)
  • American Association for the Advancement of Science (AAAS)  (19)
  • Springer Nature
  • 2000-2004
  • 1995-1999  (19)
  • 1940-1944
  • 1998  (19)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (19)
  • Springer Nature
Years
  • 2000-2004
  • 1995-1999  (19)
  • 1940-1944
Year
  • 1
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    A physical map of 30,000 human genes (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-10-23
    Description: A map of 30,181 human gene-based markers was assembled and integrated with the current genetic map by radiation hybrid mapping. The new gene map contains nearly twice as many genes as the previous release, includes most genes that encode proteins of known function, and is twofold to threefold more accurate than the previous version. A redesigned, more informative and functional World Wide Web site (www.ncbi.nlm.nih.gov/genemap) provides the mapping information and associated data and annotations. This resource constitutes an important infrastructure and tool for the study of complex genetic traits, the positional cloning of disease genes, the cross-referencing of mammalian genomes, and validated human transcribed sequences for large-scale studies of gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Deloukas, P -- Schuler, G D -- Gyapay, G -- Beasley, E M -- Soderlund, C -- Rodriguez-Tome, P -- Hui, L -- Matise, T C -- McKusick, K B -- Beckmann, J S -- Bentolila, S -- Bihoreau, M -- Birren, B B -- Browne, J -- Butler, A -- Castle, A B -- Chiannilkulchai, N -- Clee, C -- Day, P J -- Dehejia, A -- Dibling, T -- Drouot, N -- Duprat, S -- Fizames, C -- Fox, S -- Gelling, S -- Green, L -- Harrison, P -- Hocking, R -- Holloway, E -- Hunt, S -- Keil, S -- Lijnzaad, P -- Louis-Dit-Sully, C -- Ma, J -- Mendis, A -- Miller, J -- Morissette, J -- Muselet, D -- Nusbaum, H C -- Peck, A -- Rozen, S -- Simon, D -- Slonim, D K -- Staples, R -- Stein, L D -- Stewart, E A -- Suchard, M A -- Thangarajah, T -- Vega-Czarny, N -- Webber, C -- Wu, X -- Hudson, J -- Auffray, C -- Nomura, N -- Sikela, J M -- Polymeropoulos, M H -- James, M R -- Lander, E S -- Hudson, T J -- Myers, R M -- Cox, D R -- Weissenbach, J -- Boguski, M S -- Bentley, D R -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1998 Oct 23;282(5389):744-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Sanger Centre, Hinxton Hall, Hinxton, Cambridge CB10 1SA UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9784132" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosomes, Human/*genetics ; Expressed Sequence Tags ; Gene Expression ; Genetic Markers ; *Genome, Human ; Human Genome Project ; Humans ; Internet ; *Physical Chromosome Mapping ; Rats ; Sequence Tagged Sites
    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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    An MTP inhibitor that normalizes atherogenic lipoprotein levels in WHHL rabbits (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-10-23
    Description: Patients with abetalipoproteinemia, a disease caused by defects in the microsomal triglyceride transfer protein (MTP), do not produce apolipoprotein B-containing lipoproteins. It was hypothesized that small molecule inhibitors of MTP would prevent the assembly and secretion of these atherogenic lipoproteins. To test this hypothesis, two compounds identified in a high-throughput screen for MTP inhibitors were used to direct the synthesis of a highly potent MTP inhibitor. This molecule (compound 9) inhibited the production of lipoprotein particles in rodent models and normalized plasma lipoprotein levels in Watanabe-heritable hyperlipidemic (WHHL) rabbits, which are a model for human homozygous familial hypercholesterolemia. These results suggest that compound 9, or derivatives thereof, has potential applications for the therapeutic lowering of atherogenic lipoprotein levels in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wetterau, J R -- Gregg, R E -- Harrity, T W -- Arbeeny, C -- Cap, M -- Connolly, F -- Chu, C H -- George, R J -- Gordon, D A -- Jamil, H -- Jolibois, K G -- Kunselman, L K -- Lan, S J -- Maccagnan, T J -- Ricci, B -- Yan, M -- Young, D -- Chen, Y -- Fryszman, O M -- Logan, J V -- Musial, C L -- Poss, M A -- Robl, J A -- Simpkins, L M -- Slusarchyk, W A -- Sulsky, R -- Taunk, P -- Magnin, D R -- Tino, J A -- Lawrence, R M -- Dickson, J K Jr -- Biller, S A -- New York, N.Y. -- Science. 1998 Oct 23;282(5389):751-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Metabolic Diseases, Bristol-Myers Squibb Pharmaceutical Research Institute, Princeton, NJ 08543-4000, USA. Wetterau_John_R@msmail.bms.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9784135" target="_blank"〉PubMed〈/a〉
    Keywords: Alanine Transaminase/blood ; Animals ; Apolipoproteins B/*blood ; Aspartate Aminotransferases/blood ; Carrier Proteins/*antagonists & inhibitors ; Cholesterol/*blood ; Cricetinae ; Disease Models, Animal ; Dose-Response Relationship, Drug ; Drug Design ; Drug Evaluation, Preclinical ; Fluorenes/chemistry/pharmacokinetics/*pharmacology ; Humans ; Hyperlipidemias/blood/drug therapy ; Hyperlipoproteinemia Type II/*blood/drug therapy ; Lipids/blood ; Lipoproteins/blood ; Liver/metabolism ; Mice ; Piperidines/chemistry/pharmacokinetics/*pharmacology ; Rabbits ; Rats ; Triglycerides/*blood/metabolism ; Tumor Cells, Cultured
    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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    Prevention of cardiac hypertrophy in mice by calcineurin inhibition (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-09-11
    Description: Hypertrophic cardiomyopathy (HCM) is an inherited form of heart disease that affects 1 in 500 individuals. Here it is shown that calcineurin, a calcium-regulated phosphatase, plays a critical role in the pathogenesis of HCM. Administration of the calcineurin inhibitors cyclosporin and FK506 prevented disease in mice that were genetically predisposed to develop HCM as a result of aberrant expression of tropomodulin, myosin light chain-2, or fetal beta-tropomyosin in the heart. Cyclosporin had a similar effect in a rat model of pressure-overload hypertrophy. These results suggest that calcineurin inhibitors merit investigation as potential therapeutics for certain forms of human heart disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sussman, M A -- Lim, H W -- Gude, N -- Taigen, T -- Olson, E N -- Robbins, J -- Colbert, M C -- Gualberto, A -- Wieczorek, D F -- Molkentin, J D -- HL58224-01/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1998 Sep 11;281(5383):1690-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Cardiovascular Biology, Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9733519" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcineurin/metabolism ; *Calcineurin Inhibitors ; Calcium/metabolism ; *Cardiac Myosins ; Cardiomegaly/metabolism/pathology/*prevention & control ; Cardiomyopathy, Dilated/pathology/*prevention & control ; Cardiomyopathy, Hypertrophic/genetics/metabolism/pathology/*prevention & control ; Carrier Proteins/genetics ; Cyclosporine/*pharmacology ; Female ; Mice ; Mice, Transgenic ; *Microfilament Proteins ; Models, Cardiovascular ; Myocardium/*metabolism/pathology ; Myosin Light Chains/genetics/metabolism ; Rats ; Signal Transduction ; Tacrolimus/*pharmacology ; Tropomodulin ; Tropomyosin/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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  • 4
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    Role of substrates and products of PI 3-kinase in regulating activation of Rac-related guanosine triphosphatases by Vav (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-02-07
    Description: Mitogen stimulation of cytoskeletal changes and c-jun amino-terminal kinases is mediated by Rac small guanine nucleotide-binding proteins. Vav, a guanosine diphosphate (GDP)-guanosine triphosphate (GTP) exchange factor for Rac that stimulates the exchange of bound GDP for GTP, bound to and was directly controlled by substrates and products of phosphoinositide (PI) 3-kinase. The PI 3-kinase substrate phosphatidylinositol-4,5-bisphosphate inhibited activation of Vav by the tyrosine kinase Lck, whereas the product phosphatidylinositol-3,4,5-trisphosphate enhanced phosphorylation and activation of Vav by Lck. Control of Vav in response to mitogens by the products of PI 3-kinase suggests a mechanism for Ras-dependent activation of Rac.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Han, J -- Luby-Phelps, K -- Das, B -- Shu, X -- Xia, Y -- Mosteller, R D -- Krishna, U M -- Falck, J R -- White, M A -- Broek, D -- CA50261/CA/NCI NIH HHS/ -- CA71443/CA/NCI NIH HHS/ -- GM31278/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1998 Jan 23;279(5350):558-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA 90033-0800, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9438848" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cell Line ; Enzyme Activation ; GTP Phosphohydrolases/*metabolism ; GTP-Binding Proteins/*metabolism ; Guanine Nucleotide Exchange Factors ; Guanosine Diphosphate/*metabolism ; Guanosine Triphosphate/metabolism ; Inositol 1,4,5-Trisphosphate/metabolism/pharmacology ; Lymphocyte Specific Protein Tyrosine Kinase p56(lck)/metabolism ; Mutagenesis, Site-Directed ; Oncogene Proteins/chemistry/*metabolism ; Phosphatidylinositol 3-Kinases/*metabolism ; Phosphatidylinositol 4,5-Diphosphate/metabolism/pharmacology ; Phosphatidylinositol Phosphates/metabolism/pharmacology ; Phosphatidylinositols/*metabolism/pharmacology ; Phosphorylation ; Proteins/metabolism ; Proto-Oncogene Proteins c-vav ; Rats ; rac GTP-Binding Proteins ; ras Guanine Nucleotide Exchange Factors
    Print ISSN: 0036-8075
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  • 5
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    Broad-spectrum, non-opioid analgesic activity by selective modulation of neuronal nicotinic acetylcholine receptors (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-01-24
    Description: Development of analgesic agents for the treatment of severe pain requires the identification of compounds that are devoid of opioid receptor liabilities. A potent (inhibition constant = 37 picomolar) neuronal nicotinic acetylcholine receptor (nAChR) ligand called ABT-594 was developed that has antinociceptive properties equal in efficacy to those of morphine across a series of diverse animal models of acute thermal, persistent chemical, and neuropathic pain states. These effects were blocked by the nAChR antagonist mecamylamine. In contrast to morphine, repeated treatment with ABT-594 did not appear to elicit opioid-like withdrawal or physical dependence. Thus, ABT-594 may be an analgesic that lacks the problems associated with opioid analgesia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bannon, A W -- Decker, M W -- Holladay, M W -- Curzon, P -- Donnelly-Roberts, D -- Puttfarcken, P S -- Bitner, R S -- Diaz, A -- Dickenson, A H -- Porsolt, R D -- Williams, M -- Arneric, S P -- New York, N.Y. -- Science. 1998 Jan 2;279(5347):77-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Neurological and Urological Diseases Research, Pharmaceutical Products Division, Abbott Laboratories, Abbott Park, IL 60064-3500, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9417028" target="_blank"〉PubMed〈/a〉
    Keywords: Analgesics, Non-Narcotic/chemical synthesis/metabolism/*pharmacology ; Animals ; Azetidines/chemical synthesis/metabolism/*pharmacology ; Bicyclo Compounds, Heterocyclic/pharmacology ; Capsaicin/pharmacology ; Dose-Response Relationship, Drug ; In Vitro Techniques ; Ligands ; Mecamylamine/pharmacology ; Morphine/pharmacology ; Nerve Fibers/drug effects/metabolism/physiology ; Neuromuscular Junction/metabolism ; Neurons/drug effects/metabolism/physiology ; Nicotine/pharmacology ; Nicotinic Agonists/chemical synthesis/metabolism/*pharmacology ; Nicotinic Antagonists/pharmacology ; Pain/drug therapy ; Pain Measurement ; Pyridines/chemical synthesis/metabolism/*pharmacology ; Rats ; Receptors, Nicotinic/*metabolism ; Spinal Cord/drug effects/metabolism/physiology ; Substance Withdrawal Syndrome/etiology ; Synaptic Transmission/drug effects
    Print ISSN: 0036-8075
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  • 6
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    Patterning of cortical efferent projections by semaphorin-neuropilin interactions (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-04
    Description: Cortical neurons communicate with various cortical and subcortical targets by way of stereotyped axon projections through the white matter. Slice overlay experiments indicate that the initial growth of cortical axons toward the white matter is regulated by a diffusible chemorepulsive signal localized near the marginal zone. Semaphorin III is a major component of this diffusible signal, and cortical neurons transduce this signal by way of the neuropilin-1 receptor. These observations indicate that semaphorin-neuropilin interactions play a critical role in the initial patterning of projections in the developing cortex.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Polleux, F -- Giger, R J -- Ginty, D D -- Kolodkin, A L -- Ghosh, A -- NS35165/NS/NINDS NIH HHS/ -- NS36176/NS/NINDS NIH HHS/ -- NS534814/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1998 Dec 4;282(5395):1904-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9836643" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/*physiology ; Cell Line ; Cerebral Cortex/*cytology/embryology ; Coculture Techniques ; Gene Targeting ; Glycoproteins/genetics/*physiology ; Humans ; Mice ; Nerve Growth Factors/*metabolism ; Nerve Tissue Proteins/*physiology ; Neurons, Efferent/cytology/*physiology ; Neuropilin-1 ; Rats ; Recombinant Proteins/metabolism ; Semaphorin-3A ; Signal Transduction
    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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  • 7
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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
    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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  • 8
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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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  • 9
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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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  • 10
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    Control of alternative splicing of potassium channels by stress hormones (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-05-09
    Description: Many molecular mechanisms for neural adaptation to stress remain unknown. Expression of alternative splice variants of Slo, a gene encoding calcium- and voltage-activated potassium channels, was measured in rat adrenal chromaffin tissue from normal and hypophysectomized animals. Hypophysectomy triggered an abrupt decrease in the proportion of Slo transcripts containing a "STREX" exon. The decrease was prevented by adrenocorticotropic hormone injections. In Xenopus oocytes, STREX variants produced channels with functional properties associated with enhanced repetitive firing. Thus, the hormonal stress axis is likely to control the excitable properties of epinephrine-secreting cells by regulating alternative splicing of Slo messenger RNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xie, J -- McCobb, D P -- New York, N.Y. -- Science. 1998 Apr 17;280(5362):443-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Neurobiology and Behavior, Cornell University, Ithaca, NY 14853, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9545224" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenal Medulla/*metabolism ; Adrenocorticotropic Hormone/metabolism/*pharmacology ; *Alternative Splicing ; Amino Acid Sequence ; Animals ; Chromaffin Cells/*metabolism ; Corticosterone/blood/*metabolism ; Dexamethasone/pharmacology ; Epinephrine/secretion ; Exons ; Female ; Hypophysectomy ; Large-Conductance Calcium-Activated Potassium Channel alpha Subunits ; Large-Conductance Calcium-Activated Potassium Channels ; Male ; Molecular Sequence Data ; Oocytes ; Phenylethanolamine N-Methyltransferase/genetics ; Polymerase Chain Reaction ; Potassium Channels/*genetics ; *Potassium Channels, Calcium-Activated ; RNA, Messenger/genetics/metabolism ; Rats ; Rats, Sprague-Dawley ; Xenopus
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