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  • Articles  (693)
  • Cell & Developmental Biology  (458)
  • Male  (117)
  • Rats  (69)
  • Signal Transduction  (64)
  • Chemical Engineering
  • General Chemistry
  • 2015-2019
  • 1995-1999  (693)
  • 1945-1949
  • 1996  (693)
  • Medicine  (693)
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  • Articles  (693)
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  • 2015-2019
  • 1995-1999  (693)
  • 1945-1949
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  • 1
    Publication Date: 1996-02-02
    Description: Tumor necrosis factor-alpha (TNF-alpha) is an important mediator of insulin resistance in obesity and diabetes through its ability to decrease the tyrosine kinase activity of the insulin receptor (IR). Treatment of cultured murine adipocytes with TNF-alpha was shown to induce serine phosphorylation of insulin receptor substrate 1 (IRS-1) and convert IRS-1 into an inhibitor of the IR tyrosine kinase activity in vitro. Myeloid 32D cells, which lack endogenous IRS-1, were resistant to TNF-alpha-mediated inhibition of IR signaling, whereas transfected 32D cells that express IRS-1 were very sensitive to this effect of TNF-alpha. An inhibitory form of IRS-1 was observed in muscle and fat tissues from obese rats. These results indicate that TNF-alpha induces insulin resistance through an unexpected action of IRS-1 to attenuate insulin receptor signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hotamisligil, G S -- Peraldi, P -- Budavari, A -- Ellis, R -- White, M F -- Spiegelman, B M -- DK 42539/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1996 Feb 2;271(5249):665-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Molecular Biology, Dana-Farber Cancer Institute, Boston, MA, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8571133" target="_blank"〉PubMed〈/a〉
    Keywords: Adipocytes/*metabolism ; Adipose Tissue/metabolism ; Animals ; Cells, Cultured ; Insulin/pharmacology ; Insulin Receptor Substrate Proteins ; Insulin Resistance/*physiology ; Male ; Mice ; Muscle, Skeletal/metabolism ; Obesity/*metabolism ; Phosphoproteins/metabolism/*physiology ; Phosphorylation ; Rats ; Rats, Zucker ; Receptor, Insulin/*antagonists & inhibitors/metabolism ; Serine/metabolism ; Signal Transduction ; Tumor Necrosis Factor-alpha/*pharmacology
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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-05-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Service, R F -- New York, N.Y. -- Science. 1996 May 31;272(5266):1258.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650534" target="_blank"〉PubMed〈/a〉
    Keywords: *Contraceptive Agents/economics ; *Drug Industry/economics/legislation & jurisprudence ; Female ; Humans ; Institute of Medicine (U.S.) ; Insurance, Health ; Liability, Legal ; Male ; *Research/economics ; Research Support as Topic ; United States
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  • 3
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-05-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fu, Y X -- Li, W H -- New York, N.Y. -- Science. 1996 May 31;272(5266):1356-7; author reply 1361-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650550" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bayes Theorem ; Biological Evolution ; Confidence Intervals ; DNA-Binding Proteins/*genetics ; *Genetics, Population ; Hominidae/*genetics ; Humans ; Introns/*genetics ; Kruppel-Like Transcription Factors ; Male ; Mutation ; Population Density ; Probability ; Time Factors ; Transcription Factors/*genetics ; Y Chromosome/*genetics
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  • 4
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-06-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Johnston, K P -- Randolph, T -- Bright, F -- Howdle, S -- New York, N.Y. -- Science. 1996 Jun 21;272(5269):1726.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650561" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Body Weight/drug effects ; Ethers/*toxicity ; Fluorocarbons/*toxicity ; Liver/*drug effects ; Organ Size/drug effects ; Rats ; Surface-Active Agents/*toxicity
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  • 5
    Publication Date: 1996-03-01
    Description: Heterosexual transmission by vaginal intercourse accounts for most transmission of human immunodeficiency virus-type 1 (HIV-1) in Africa and Asia but is less important in the HIV-1 epidemics of the United States and Western Europe. Epithelial Langerhans' cells (LCs) represent a possible source of initial cell contact for vaginal infection. Fifteen primary isolates of HIV-1 from U.S. homosexuals and 18 HIV-1 isolates from Thailand heterosexuals were evaluated for growth in LCs of U.S. origin. All the viruses from the Thai heterosexuals, which were subtype E, grew more efficiently in the LCs than any of the viruses from the U.S. homosexuals, which are subtype B. These results suggest that LC tropism is associated with the efficiency of heterosexual transmission of HIV.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Soto-Ramirez, L E -- Renjifo, B -- McLane, M F -- Marlink, R -- O'Hara, C -- Sutthent, R -- Wasi, C -- Vithayasai, P -- Vithayasai, V -- Apichartpiyakul, C -- Auewarakul, P -- Pena Cruz, V -- Chui, D S -- Osathanondh, R -- Mayer, K -- Lee, T H -- Essex, M -- 5 D43 TW0004/TW/FIC NIH HHS/ -- CA 39805/CA/NCI NIH HHS/ -- HL 33774/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1996 Mar 1;271(5253):1291-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Harvard AIDS Institute, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638113" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line ; Cells, Cultured ; HIV Core Protein p24/analysis ; HIV Infections/*transmission/virology ; HIV-1/classification/*growth & development/isolation & purification ; Homosexuality, Male ; Humans ; Langerhans Cells/*virology ; Macrophages/virology ; Male ; Monocytes/virology ; *Sexual Behavior ; Sexually Transmitted Diseases, Viral/*transmission/virology ; T-Lymphocytes/virology ; Thailand ; United States ; Virus Replication
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  • 6
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-05-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cahill, L -- Haigler, H J -- New York, N.Y. -- Science. 1996 May 31;272(5266):1251.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650532" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/*pharmacology ; *Aging ; Animals ; Cell Death ; Enkephalin, Methionine/*pharmacology ; Hippocampus/*cytology ; Humans ; Memory ; Pyramidal Cells/cytology/*drug effects/physiology ; Rats
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  • 7
    Publication Date: 1996-11-22
    Description: The RAC guanine nucleotide binding proteins regulate multiple biological activities, including actin polymerization, activation of the Jun kinase (JNK) cascade, and cell proliferation. RAC effector loop mutants were identified that separate the ability of RAC to interact with different downstream effectors. One mutant of activated human RAC protein, RACV12H40 (with valine and histidine substituted at position 12 and 40, respectively), was defective in binding to PAK3, a Ste20-related p21-activated kinase (PAK), but bound to POR1, a RAC-binding protein. This mutant failed to stimulate PAK and JNK activity but still induced membrane ruffling and mediated transformation. A second mutant, RACV12L37 (with leucine substituted at position 37), which bound PAK but not POR1, induced JNK activation but was defective in inducing membrane ruffling and transformation. These results indicate that the effects of RAC on the JNK cascade and on actin polymerization and cell proliferation are mediated by distinct effector pathways that diverge at the level of RAC itself.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Joneson, T -- McDonough, M -- Bar-Sagi, D -- Van Aelst, L -- CA55360/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Nov 22;274(5291):1374-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Genetics and Microbiology, State University of New York, Stony Brook, NY 11794, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8910277" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Actins/*metabolism ; *Adaptor Proteins, Signal Transducing ; Animals ; COS Cells ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Carrier Proteins/metabolism ; *Cell Division ; Cell Line ; Cell Line, Transformed ; Cell Membrane/ultrastructure ; Enzyme Activation ; GTP-Binding Proteins/genetics/metabolism/*physiology ; Humans ; JNK Mitogen-Activated Protein Kinases ; Mice ; *Mitogen-Activated Protein Kinases ; Mutagenesis ; Protein-Serine-Threonine Kinases/metabolism ; Rats ; Transfection ; p21-Activated Kinases ; rac GTP-Binding Proteins
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  • 8
    Publication Date: 1996-09-13
    Description: The neuropeptide corticotropin-releasing factor (CRF) is well known to act on the central nervous system in ways that mimic stress and result in decreases in exploration, increases in sympathetic activity, decreases in parasympathetic outflow, and decreases in appetitive behavior. Urocortin, a neuropeptide related to CRF, binds with high affinity to the CRF2 receptor, is more potent than CRF in suppressing appetite, but is less potent than CRF in producing anxiety-like effects and activation. Doses as low as 10 nanograms injected intracerebroventricularly were effective in decreasing food intake in food-deprived and free-feeding rats. These results suggest that urocortin may be an endogenous CRF-like factor in the brain responsible for the effects of stress on appetite.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spina, M -- Merlo-Pich, E -- Chan, R K -- Basso, A M -- Rivier, J -- Vale, W -- Koob, G F -- 1 F05 TW05262/TW/FIC NIH HHS/ -- DK 26741/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1996 Sep 13;273(5281):1561-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuropharmacology, Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8703220" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Appetite/*drug effects ; Appetite Depressants/administration & dosage/metabolism/*pharmacology ; Behavior, Animal/drug effects ; Blood Pressure/drug effects ; Carrier Proteins/metabolism ; Corticotropin-Releasing Hormone/administration & dosage/metabolism/*pharmacology ; Dose-Response Relationship, Drug ; Eating/drug effects ; Fasting ; Injections, Intraventricular ; Motor Activity/drug effects ; Rats ; Rats, Wistar ; Receptors, Corticotropin-Releasing Hormone/metabolism ; Urocortins ; Urotensins/pharmacology
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  • 9
    Publication Date: 1996-02-09
    Description: The RAS guanine nucleotide binding proteins activate multiple signaling events that regulate cell growth and differentiation. In quiescent fibroblasts, ectopic expression of activated H-RAS (H-RASV12, where V12 indicates valine-12) induces membrane ruffling, mitogen-activated protein (MAP) kinase activation, and stimulation of DNA synthesis. A mutant of activated H-RAS, H-RASV12C40 (where C40 indicates cysteine-40), was identified that was defective for MAP kinase activation and stimulation of DNA synthesis, but retained the ability to induce membrane ruffling. Another mutant of activated H-RAS, H-RASV12S35 (where S35 indicates serine-35), which activates MAP kinase, was defective for stimulation of membrane ruffling and induction of DNA synthesis. Expression of both mutants resulted in a stimulation of DNA synthesis that was comparable to that induced by H-RASV12. These results indicate that membrane ruffling and activation of MAP kinase represent distinct RAS effector pathways and that input from both pathways is required for the mitogenic activity of RAS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Joneson, T -- White, M A -- Wigler, M H -- Bar-Sagi, D -- CA 55360/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Feb 9;271(5250):810-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Genetics and Microbiology, State University of New York at Stony Brook 11794, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8628998" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cell Division ; Cell Line ; Cell Membrane/*ultrastructure ; DNA/biosynthesis ; Enzyme Activation ; GTP-Binding Proteins/genetics/metabolism ; Microinjections ; Mutation ; Plasmids ; Protein-Serine-Threonine Kinases/*metabolism ; Proto-Oncogene Proteins/*metabolism ; Proto-Oncogene Proteins c-raf ; Rats ; Signal Transduction ; rac GTP-Binding Proteins ; ras Proteins/genetics/*metabolism
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  • 10
    Publication Date: 1996-03-08
    Description: Friedreich's ataxia (FRDA) is an autosomal recessive, degenerative disease that involves the central and peripheral nervous systems and the heart. A gene, X25, was identified in the critical region for the FRDA locus on chromosome 9q13. This gene encodes a 210-amino acid protein, frataxin, that has homologs in distant species such as Caenorhabditis elegans and yeast. A few FRDA patients were found to have point mutations in X25, but the majority were homozygous for an unstable GAA trinucleotide expansion in the first X25 intron.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Campuzano, V -- Montermini, L -- Molto, M D -- Pianese, L -- Cossee, M -- Cavalcanti, F -- Monros, E -- Rodius, F -- Duclos, F -- Monticelli, A -- Zara, F -- Canizares, J -- Koutnikova, H -- Bidichandani, S I -- Gellera, C -- Brice, A -- Trouillas, P -- De Michele, G -- Filla, A -- De Frutos, R -- Palau, F -- Patel, P I -- Di Donato, S -- Mandel, J L -- Cocozza, S -- Koenig, M -- Pandolfo, M -- 722/Telethon/Italy -- NS34192/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1996 Mar 8;271(5254):1423-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department de Genetica, University of Valencia, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8596916" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Sequence ; Base Sequence ; Chromosomes, Human, Pair 9/*genetics ; DNA Primers ; Female ; Friedreich Ataxia/*genetics ; Genes, Recessive ; Heterozygote ; Humans ; *Introns ; *Iron-Binding Proteins ; Male ; Molecular Sequence Data ; Pedigree ; Point Mutation ; Polymerase Chain Reaction ; Proteins/chemistry/*genetics ; Sequence Alignment ; *Trinucleotide Repeats
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  • 11
    Publication Date: 1996-08-16
    Description: A signaling pathway has been elucidated whereby growth factors activate the transcription factor cyclic adenosine monophosphate response element-binding protein (CREB), a critical regulator of immediate early gene transcription. Growth factor-stimulated CREB phosphorylation at serine-133 is mediated by the RAS-mitogen-activated protein kinase (MAPK) pathway. MAPK activates CREB kinase, which in turn phosphorylates and activates CREB. Purification, sequencing, and biochemical characterization of CREB kinase revealed that it is identical to a member of the pp90(RSK) family, RSK2. RSK2 was shown to mediate growth factor induction of CREB serine-133 phosphorylation both in vitro and in vivo. These findings identify a cellular function for RSK2 and define a mechanism whereby growth factor signals mediated by RAS and MAPK are transmitted to the nucleus to activate gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xing, J -- Ginty, D D -- Greenberg, M E -- CA43855/CA/NCI NIH HHS/ -- NS34814-01/NS/NINDS NIH HHS/ -- P30-HD18655/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1996 Aug 16;273(5277):959-63.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Biological and Biomedical Sciences, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8688081" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cell Line ; Cell Nucleus/metabolism ; Cyclic AMP Response Element-Binding Protein/*metabolism ; Epidermal Growth Factor/pharmacology ; *Gene Expression Regulation ; Growth Substances/*pharmacology ; Humans ; Molecular Sequence Data ; Nerve Growth Factors/pharmacology ; PC12 Cells ; Phosphorylation ; Protein-Serine-Threonine Kinases/*metabolism ; Rats ; Ribosomal Protein S6 Kinases ; *Signal Transduction ; Tetradecanoylphorbol Acetate/pharmacology ; Transcriptional Activation ; Transfection ; Tumor Cells, Cultured ; ras Proteins/metabolism
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  • 12
    Publication Date: 1996-08-09
    Description: STAT proteins (signal transducers and activators of transcription) activate distinct target genes despite having similar DNA binding preferences. The transcriptional specificity of STAT proteins was investigated on natural STAT binding sites near the interferon-gamma gene. These sites are arranged in multiple copies and required cooperative interactions for STAT binding. The conserved amino-terminal domain of STAT proteins was required for cooperative DNA binding, although this domain was not essential for dimerization or binding to a single site. Cooperative binding interactions enabled the STAT proteins to recognize variations of the consensus site. These sites can be specific for the different STAT proteins and may function to direct selective transcriptional activation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xu, X -- Sun, Y L -- Hoey, T -- New York, N.Y. -- Science. 1996 Aug 9;273(5276):794-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Tularik, Two Corporate Drive, South San Francisco, CA 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8670419" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Binding Sites ; Cell Line ; DNA/*metabolism ; DNA-Binding Proteins/chemistry/immunology/*metabolism ; Interferon-gamma/genetics ; Introns ; Molecular Sequence Data ; Mutation ; Oligodeoxyribonucleotides/metabolism ; Promoter Regions, Genetic ; STAT1 Transcription Factor ; STAT4 Transcription Factor ; Sequence Deletion ; Signal Transduction ; Trans-Activators/chemistry/immunology/*metabolism ; *Transcriptional Activation
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  • 13
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-10-18
    Description: In mice, susceptibility to Leishmania major is associated with the early expansion of T helper 2 cells (TH2) cells, but nothing is known of the specificity of these cells. A previously identified antigen, Leishmania homolog of receptors for activated C kinase (LACK), was found to be the focus of this initial response. Mice made tolerant to LACK by the transgenic expression of the antigen in the thymus exhibited both a diminished TH2 response and a healing phenotype. Thus, T cells that are activated early and are reactive to a single antigen play a pivotal role in directing the immune response to the entire parasite.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Julia, V -- Rassoulzadegan, M -- Glaichenhaus, N -- New York, N.Y. -- Science. 1996 Oct 18;274(5286):421-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉CNRS, Institut de Pharmacologie Moleculaire et Cellulaire, 660 Route des Lucioles, 06560 Valbonne, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8832890" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, Protozoan/*immunology ; Crosses, Genetic ; Female ; Immune Tolerance ; Immunity, Innate ; Immunization ; Interleukin-4/secretion ; Interleukin-5/secretion ; Leishmania major/*immunology ; Leishmaniasis, Cutaneous/*immunology ; Lymphocyte Activation ; Male ; Mice ; Mice, Inbred BALB C ; Mice, Transgenic ; Molecular Sequence Data ; Phenotype ; Protozoan Proteins/*immunology ; Th1 Cells/immunology ; Th2 Cells/*immunology
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  • 14
    Publication Date: 1996-12-20
    Description: Cyclic guanosine 3',5'-monophosphate (cGMP)-dependent protein kinases (cGKs) mediate cellular signaling induced by nitric oxide and cGMP. Mice deficient in the type II cGK were resistant to Escherichia coli STa, an enterotoxin that stimulates cGMP accumulation and intestinal fluid secretion. The cGKII-deficient mice also developed dwarfism that was caused by a severe defect in endochondral ossification at the growth plates. These results indicate that cGKII plays a central role in diverse physiological processes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pfeifer, A -- Aszodi, A -- Seidler, U -- Ruth, P -- Hofmann, F -- Fassler, R -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2082-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut f-ur Pharmakologie und Toxikologie, Technische Universitat Munchen, Biedersteiner Strasse 29, D-80802 M-unchen, Germany. pfeifer@ipt.med.tu-muenchen.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8953039" target="_blank"〉PubMed〈/a〉
    Keywords: 8-Bromo Cyclic Adenosine Monophosphate/pharmacology ; Animals ; Bacterial Toxins/toxicity ; Body Water/secretion ; *Bone Development ; Crosses, Genetic ; Cyclic GMP/analogs & derivatives/metabolism/pharmacology ; Cyclic GMP-Dependent Protein Kinases/deficiency/genetics/*metabolism ; Diarrhea/physiopathology ; Dwarfism/*enzymology/genetics/pathology ; Enterotoxins/toxicity ; Escherichia coli Proteins ; Female ; Gene Deletion ; Growth Plate/enzymology/pathology ; Intestinal Mucosa/*secretion ; Male ; Mice ; Mice, Inbred C57BL ; Osteogenesis ; Signal Transduction
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  • 15
    Publication Date: 1996-10-04
    Description: The comprehension of visually presented sentences produces brain activation that increases with the linguistic complexity of the sentence. The volume of neural tissue activated (number of voxels) during sentence comprehension was measured with echo-planar functional magnetic resonance imaging. The modulation of the volume of activation by sentence complexity was observed in a network of four areas: the classical left-hemisphere language areas (the left laterosuperior temporal cortex, or Wernicke's area, and the left inferior frontal gyrus, or Broca's area) and their homologous right-hemisphere areas, although the right areas had much smaller volumes of activation than did the left areas. These findings generally indicate that the amount of neural activity that a given cognitive process engenders is dependent on the computational demand that the task imposes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Just, M A -- Carpenter, P A -- Keller, T A -- Eddy, W F -- Thulborn, K R -- MH-00662/MH/NIMH NIH HHS/ -- MH-19102/MH/NIMH NIH HHS/ -- MH-29617/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1996 Oct 4;274(5284):114-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychology, Carnegie Mellon University, Pittsburgh, PA 15213, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8810246" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; *Brain Mapping ; Cognition/*physiology ; Dominance, Cerebral ; Female ; Frontal Lobe/anatomy & histology/*physiology ; Humans ; Language Tests ; Magnetic Resonance Imaging ; Male ; Temporal Lobe/anatomy & histology/*physiology
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  • 16
    Publication Date: 1996-05-31
    Description: Missense mutations in the 695-amino acid form of the amyloid precursor protein (APP695) cosegregate with disease phenotype in families with dominantly inherited Alzheimer's disease. These mutations convert valine at position 642 to isoleucine, phenylalanine, or glycine. Expression of these mutant proteins, but not of normal APP695, was shown to induce nucleosomal DNA fragmentation in neuronal cells. Induction of DNA fragmentation required the cytoplasmic domain of the mutants and appeared to be mediated by heterotrimeric guanosine triphosphate-binding proteins (G proteins).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yamatsuji, T -- Matsui, T -- Okamoto, T -- Komatsuzaki, K -- Takeda, S -- Fukumoto, H -- Iwatsubo, T -- Suzuki, N -- Asami-Odaka, A -- Ireland, S -- Kinane, T B -- Giambarella, U -- Nishimoto, I -- New York, N.Y. -- Science. 1996 May 31;272(5266):1349-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cardiovascular Research Center, Massachusetts General Hospital, Department of Medicine, Harvard Medical School, Charlestown, MA 02129, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650548" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*genetics/metabolism ; Amyloid beta-Peptides/metabolism ; Amyloid beta-Protein Precursor/chemistry/genetics/*physiology ; Animals ; Apoptosis ; Base Sequence ; Culture Media, Conditioned ; DNA/*metabolism ; GTP-Binding Proteins/*physiology ; Humans ; Hybrid Cells ; Mice ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Mutation ; Neurons/cytology/*metabolism ; Nucleosomes/*metabolism ; Peptide Fragments/metabolism ; Rats ; Transfection
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  • 17
    Publication Date: 1996-06-21
    Description: ZPR1 is a zinc finger protein that binds to the cytoplasmic tyrosine kinase domain of the epidermal growth factor receptor (EGFR). Deletion analysis demonstrated that this binding interaction is mediated by the zinc fingers of ZPR1 and subdomains X and XI of the EGFR tyrosine kinase. Treatment of mammalian cells with EGF caused decreased binding of ZPR1 to the EGFR and the accumulation of ZPR1 in the nucleus. The effect of EGF to regulate ZPR1 binding is dependent on tyrosine phosphorylation of the EGFR. ZPR1 therefore represents a prototype for a class of molecule that binds to the EGFR and is released from the receptor after activation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Galcheva-Gargova, Z -- Konstantinov, K N -- Wu, I H -- Klier, F G -- Barrett, T -- Davis, R J -- R01-CA58396/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Jun 21;272(5269):1797-802.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, University of Massachusetts Medical School, Worcester, 01605, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650580" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Carrier Proteins/chemistry/*metabolism/secretion ; Cell Line ; Cell Nucleus/metabolism ; Cloning, Molecular ; Cytoplasm/metabolism ; Epidermal Growth Factor/pharmacology ; Humans ; Immunoblotting ; Male ; Mice ; Molecular Sequence Data ; Phosphorylation ; Phosphotyrosine/metabolism ; Protein Structure, Secondary ; RNA, Messenger/genetics/metabolism ; Receptor, Epidermal Growth Factor/chemistry/*metabolism ; Testis/metabolism ; Type C Phospholipases/metabolism ; Vanadates/pharmacology ; *Zinc Fingers ; src Homology Domains
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  • 18
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-01-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carr, A M -- New York, N.Y. -- Science. 1996 Jan 19;271(5247):314-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Cell Mutation Unit, Sussex University, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8553064" target="_blank"〉PubMed〈/a〉
    Keywords: Ataxia Telangiectasia Mutated Proteins ; *Cell Cycle ; *Cell Cycle Proteins ; Checkpoint Kinase 2 ; *DNA Damage ; DNA Replication ; DNA-Binding Proteins ; Humans ; *Mitosis ; Mutation ; Phosphorylation ; Protein Kinases/genetics/*metabolism ; *Protein-Serine-Threonine Kinases ; Proteins/genetics/metabolism ; Saccharomyces cerevisiae/cytology/metabolism ; *Saccharomyces cerevisiae Proteins ; Schizosaccharomyces/cytology/metabolism ; Signal Transduction ; Tumor Suppressor Proteins
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  • 19
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-12-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carlin, N F -- New York, N.Y. -- Science. 1996 Dec 6;274(5293):1595-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8984620" target="_blank"〉PubMed〈/a〉
    Keywords: Female ; Humans ; Male ; *Sex ; *Terminology as Topic ; *Writing
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  • 20
    Publication Date: 1996-04-26
    Description: Recent evidence that the cerebellum is involved in perception and cognition challenges the prevailing view that its primary function is fine motor control. A new alternative hypothesis is that the lateral cerebellum is not activated by the control of movement per se, but is strongly engaged during the acquisition and discrimination of sensory information. Magnetic resonance imaging of the lateral cerebellar output (dentate) nucleus during passive and active sensory tasks confirmed this hypothesis. These findings suggest that the lateral cerebellum may be active during motor, perceptual, and cognitive performances specifically because of the requirement to process sensory data.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gao, J H -- Parsons, L M -- Bower, J M -- Xiong, J -- Li, J -- Fox, P T -- MH/DA52145/MH/NIMH NIH HHS/ -- P20 DA52176-01/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1996 Apr 26;272(5261):545-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Research Imaging Center, Medical School, University of Texas Health Science Center, San Antonio, TX 78284-6240, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8614803" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Cerebellar Nuclei/blood supply/*physiology ; Cerebrovascular Circulation ; Discrimination (Psychology)/*physiology ; Humans ; Magnetic Resonance Imaging ; Male ; Motor Activity/physiology ; Perception/*physiology ; Physical Stimulation ; Psychomotor Performance/*physiology ; Sensation/physiology ; Touch/physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 21
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-12-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, J -- New York, N.Y. -- Science. 1996 Dec 13;274(5294):1837-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8984641" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Disorders of Sex Development/chemically induced/*veterinary ; Estradiol/analysis/toxicity ; Estrogens/*analysis/toxicity ; Estrone/analysis/toxicity ; Ethinyl Estradiol/analysis ; Female ; Fish Diseases/*chemically induced ; Gonadal Steroid Hormones/analysis ; Humans ; Male ; Sewage/*chemistry ; Vitellogenins/biosynthesis ; Water Pollutants, Chemical/*toxicity
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  • 22
    Publication Date: 1996-04-12
    Description: The neocortex receives information about the environment and the rest of the brain through pathways from the thalamus. These pathways have frequency-dependent properties that can strongly influence their effect on the neocortex. In 1943 Morison and Dempsey described "augmenting responses," a form of short-term plasticity in some thalamocortical pathways that is triggered by 8- to 15-hertz activation. Results from anesthetized rats showed that the augmenting response is initiated by pyramidal cells in layer V. The augmenting response was also observed in awake, unrestrained animals and was found to be dynamically modulated by their behavioral state.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Castro-Alamancos, M A -- Connors, B W -- MH19118/MH/NIMH NIH HHS/ -- NS25983/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1996 Apr 12;272(5259):274-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉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/8602513" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cerebral Cortex/*physiology ; Electric Stimulation ; Motor Cortex/physiology ; Neural Pathways ; *Neuronal Plasticity ; Pyramidal Cells/physiology ; Rats ; Rats, Sprague-Dawley ; Synapses/physiology ; Thalamic Nuclei/*physiology
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  • 23
    Publication Date: 1996-04-26
    Description: Nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), and neurotrophin-3 (NT-3) selectively bind to distinct members of the Trk family of tyrosine kinase receptors, but all three bind with similar affinities to the neurotrophin receptor p75 (p75NTR). The biological significance of neurotrophin binding to p75NTR in cells that also express Trk receptors has been difficult to ascertain. In the absence of TrkA, NGF binding to p75NGR activated the transcription factor nuclear factor kappa B (NF-kappa B) in rat Schwann cells. This activation was not observed in Schwann cells isolated from mice that lacked p75NTR. The effect was selective for NGF; NF-kappa B was not activated by BDNF or NT-3.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carter, B D -- Kaltschmidt, C -- Kaltschmidt, B -- Offenhauser, N -- Bohm-Matthaei, R -- Baeuerle, P A -- Barde, Y A -- New York, N.Y. -- Science. 1996 Apr 26;272(5261):542-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiochemistry, Max-Planck Institute for Psychiatry, Martinsried, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8614802" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Brain-Derived Neurotrophic Factor ; Cell Nucleus/metabolism ; Cells, Cultured ; DNA/metabolism ; L Cells (Cell Line) ; Mice ; Molecular Sequence Data ; NF-kappa B/*metabolism ; Nerve Growth Factors/*metabolism/pharmacology ; Nerve Tissue Proteins/metabolism/pharmacology ; Neurotrophin 3 ; Proto-Oncogene Proteins/metabolism ; Rats ; Receptor Protein-Tyrosine Kinases/metabolism ; Receptor, Nerve Growth Factor ; Receptor, trkA ; Receptors, Nerve Growth Factor/*metabolism ; Schwann Cells/*metabolism ; Signal Transduction/*physiology
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  • 24
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-08-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1996 Aug 2;273(5275):573.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8701305" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*complications ; Antibodies, Viral/*blood ; Herpesviridae/*immunology ; Herpesviridae Infections/complications/*virology ; Homosexuality, Male ; Humans ; Male ; Sarcoma, Kaposi/complications/etiology/*virology
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  • 25
    Publication Date: 1996-01-05
    Description: A speech processing algorithm was developed to create more salient versions of the rapidly changing elements in the acoustic waveform of speech that have been shown to be deficiently processed by language-learning impaired (LLI) children. LLI children received extensive daily training, over a 4-week period, with listening exercises in which all speech was translated into this synthetic form. They also received daily training with computer "games" designed to adaptively drive improvements in temporal processing thresholds. Significant improvements in speech discrimination and language comprehension abilities were demonstrated in two independent groups of LLI children.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tallal, P -- Miller, S L -- Bedi, G -- Byma, G -- Wang, X -- Nagarajan, S S -- Schreiner, C -- Jenkins, W M -- Merzenich, M M -- New York, N.Y. -- Science. 1996 Jan 5;271(5245):81-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Molecular and Behavioral Neuroscience, Rutgers University, Newark, NJ 07102, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8539604" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Child ; Child, Preschool ; Female ; Humans ; Language Disorders/*therapy ; *Language Therapy ; Learning Disorders/*therapy ; Male ; *Software ; Speech Perception ; *Video Games
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  • 26
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-06-07
    Description: The hippocampus has two major outputs: multisynaptic pathways to the cerebral cortex and a massive descending projection directly to the lateral septal part of the basal ganglia. Here it is shown that the descending output is organized in such a way that different hippocampal regions map in an orderly way onto hypothalamic systems mediating the expression of different classes of goal-oriented behavior. This mapping is characterized by a unidirectional hippocampo-lateral septal projection and then by bidirectional lateral septo-hypothalamic projections, all topographically organized. The connectional evidence predicts that information processing in different regions of the hippocampus selectively influences the expression of different classes of behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Risold, P Y -- Swanson, L W -- New York, N.Y. -- Science. 1996 Jun 7;272(5267):1484-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Neural, Informational, and Behavioral Sciences, University of Southern California, Los Angeles 90089-2520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8633241" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoradiography ; Behavior, Animal ; *Brain Mapping ; Enkephalins/analysis ; Glutamate Decarboxylase/analysis ; Hippocampus/*anatomy & histology/*physiology ; Hypothalamus/anatomy & histology/physiology ; In Situ Hybridization ; Memory/physiology ; Neural Pathways ; Neuropeptides/analysis ; Pyramidal Cells/cytology/physiology ; Rats ; Septal Nuclei/*anatomy & histology/*physiology ; Somatostatin/analysis ; gamma-Aminobutyric Acid/analysis
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  • 27
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-11-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Taylor, S I -- Barr, V -- Reitman, M -- New York, N.Y. -- Science. 1996 Nov 15;274(5290):1151-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Diabetes Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892-1829, USA. simeon_taylor@nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8966588" target="_blank"〉PubMed〈/a〉
    Keywords: Adipocytes/physiology ; Animals ; Carrier Proteins/metabolism ; Diabetes Mellitus/*etiology ; Diabetes Mellitus, Type 2/*etiology ; Gene Expression Regulation, Enzymologic ; Humans ; Insulin/*metabolism ; Insulin Antagonists ; Insulin Receptor Substrate Proteins ; Insulin Resistance ; Leptin ; Liver/metabolism ; Mice ; Mice, Obese ; Obesity/physiopathology ; Phosphoenolpyruvate Carboxykinase (GTP)/genetics ; Phosphoproteins/metabolism ; Phosphorylation ; Proteins/pharmacology/*secretion ; Receptor, Insulin/metabolism ; *Receptors, Cell Surface ; Receptors, Leptin ; Signal Transduction
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  • 28
    Publication Date: 1996-01-26
    Description: It has been known for over 45 years that electrical stimulation of the midbrain reticular formation and of the thalamic intralaminar nuclei of the brain alerts animals. However, lesions of these sectors fail to impair arousal and vigilance in some cases, making the role of the ascending activating reticular system controversial. Here, a positron emission tomographic study showed activation of the midbrain reticular formation and of thalamic intralaminar nuclei when human participants went from a relaxed awake state to an attention-demanding reaction-time task. These results confirm the role of these areas of the brain and brainstem in arousal and vigilance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kinomura, S -- Larsson, J -- Gulyas, B -- Roland, P E -- New York, N.Y. -- Science. 1996 Jan 26;271(5248):512-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, Karolinska Institute, Stockholm, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8560267" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Attention/*physiology ; Brain Mapping ; Humans ; Male ; Mesencephalon/blood supply/physiology/radionuclide imaging ; Reaction Time ; Regional Blood Flow ; Reticular Formation/blood supply/*physiology/radionuclide imaging ; Thalamic Nuclei/blood supply/*physiology/radionuclide imaging ; Tomography, Emission-Computed
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  • 29
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-04-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, J -- New York, N.Y. -- Science. 1996 Apr 12;272(5259):200.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8602503" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Asthma/*etiology ; Carcinogens/*toxicity ; Glutathione/metabolism ; Humans ; Immune System/drug effects ; Methylene Chloride/metabolism/*toxicity ; Mice ; Nitrogen Dioxide/*toxicity ; Rats
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  • 30
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-05-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Porte, D Jr -- Schwartz, M W -- New York, N.Y. -- Science. 1996 May 3;272(5262):699-700.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, Department of Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8614830" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Diabetes Complications ; Diabetes Mellitus/enzymology ; Diabetes Mellitus, Experimental/complications/enzymology ; Endothelium, Vascular/enzymology ; Enzyme Inhibitors/*pharmacology/toxicity ; Humans ; Hyperglycemia/*complications/enzymology ; Isoenzymes/*antagonists & inhibitors/metabolism ; Kidney/enzymology ; Muscle, Smooth, Vascular/enzymology ; Protein Kinase C/*antagonists & inhibitors/metabolism ; Protein Kinase C beta ; Rats ; Regional Blood Flow/drug effects ; Retina/enzymology ; Retinal Vessels/physiology
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  • 31
    Publication Date: 1996-03-15
    Description: Diffusible factors of several protein families control appendage outgrowth and patterning in both insects and vertebrates. In Drosophila wing development, the gene decapentaplegic (dpp) is expressed along the anteroposterior compartment boundary. Early wingless (wg) expression is involved in setting up the dorsoventral boundary. Interaction between dpp- and wg-expressing cells promotes appendage outgrowth. Here, it is shown that optomotor-blind (omb) expression is required for distal wing development and is controlled by both dpp and wg. Ectopic omb expression can lead to the growth of additional wings. Thus, omb is essential for wing development and is controlled by two signaling pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grimm, S -- Pflugfelder, G O -- New York, N.Y. -- Science. 1996 Mar 15;271(5255):1601-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Theodor-Boveri-Institut (Biozentrum), Lehrstuhl fur Genetik, Universitat Wurzburg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8599120" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA-Binding Proteins/*genetics/physiology ; Drosophila/*genetics/growth & development ; *Drosophila Proteins ; *Gene Expression Regulation, Developmental ; Genes, Insect ; Insect Hormones/*genetics/physiology ; Larva/genetics/growth & development ; Mutation ; Nerve Tissue Proteins/*genetics/physiology ; Phenotype ; Proto-Oncogene Proteins/*genetics/physiology ; Signal Transduction ; *T-Box Domain Proteins ; Wings, Animal/*growth & development ; Wnt1 Protein
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  • 32
    Publication Date: 1996-02-02
    Description: The chromatic dimensions of human color vision have a neural basis in the retina. Ganglion cells, the output neurons of the retina, exhibit spectral opponency; they are excited by some wavelengths and inhibited by others. The hypothesis that the opponent circuitry emerges from selective connections between horizontal cell interneurons and cone photoreceptors sensitive to long, middle, and short wavelengths (L-, M-, and S-cones) was tested by physiologically and anatomically characterizing cone connections of horizontal cell mosaics in macaque monkeys. H1 horizontal cells received input only from L- and M-cones, whereas H2 horizontal cells received a strong input from S-cones and a weaker input from L- and M-cones. All cone inputs were the same sign, and both horizontal cell types lacked opponency. Despite cone type selectivity, the horizontal cell cannot be the locus of an opponent transformation in primates, including humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dacey, D M -- Lee, B B -- Stafford, D K -- Pokorny, J -- Smith, V C -- New York, N.Y. -- Science. 1996 Feb 2;271(5249):656-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Structure, University of Washington, Seattle 98195-7420, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8571130" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Color Perception/*physiology ; Dendrites/ultrastructure ; Humans ; Interneurons/cytology/*physiology ; Macaca fascicularis ; Macaca mulatta ; Macaca nemestrina ; Photic Stimulation ; Retinal Cone Photoreceptor Cells/*physiology ; Retinal Ganglion Cells/*physiology ; Signal Transduction ; Visual Pathways
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  • 33
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-12-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grunwald, D J -- New York, N.Y. -- Science. 1996 Dec 6;274(5293):1634-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Human Genetics, Eccles Institute of Human Genetics, University of Utah, Salt Lake City 84112, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8984632" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Congenital Abnormalities/genetics ; *Embryonic Development ; Embryonic Induction ; *Genes ; Humans ; Morphogenesis ; *Mutation ; Phenotype ; Signal Transduction ; Syndrome ; Zebrafish/*embryology/*genetics
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  • 34
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-05-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morell, V -- New York, N.Y. -- Science. 1996 May 17;272(5264):953-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638139" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Drosophila/genetics/*physiology ; Female ; Genes, Insect ; Male ; Mutation ; Reproduction ; Sex Characteristics ; Sexual Behavior, Animal
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  • 35
    Publication Date: 1996-04-05
    Description: The rotavirus nonstructural glycoprotein NSP4 is an intracellular receptor that mediates the acquisition of a transient membrane envelope as subviral particles bud into the endoplasmic reticulum. NSP4 also causes an increase in intracellular calcium in insect cells. Purified NSP4 or a peptide corresponding to NSP4 residues 114 to 135 induced diarrhea in young (6 to 10 days old) CD1 mice. This disease response was age-dependent, dose-dependent, and specific. Electrophysiologic data from intestinal mucosa showed that the NSP4 114-135 peptide potentiates chloride secretion by a calcium-dependent signaling pathway. Diarrhea is induced when NSP4, acting as a viral enterotoxin, triggers a signal transduction pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ball, J M -- Tian, P -- Zeng, C Q -- Morris, A P -- Estes, M K -- DK 30144/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1996 Apr 5;272(5258):101-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Virology, 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/8600515" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Amino Acid Sequence ; Animals ; Calcium/metabolism ; Carbachol/pharmacology ; Chlorides/metabolism ; Colforsin/pharmacology ; Diarrhea/*etiology/prevention & control/virology ; Enterotoxins/*toxicity ; Glycoproteins/immunology/*toxicity ; Immune Sera/administration & dosage ; Immunization ; In Vitro Techniques ; Intestinal Mucosa/drug effects/secretion ; Mice ; Molecular Sequence Data ; Peptide Fragments/toxicity ; Receptors, Virus ; Rotavirus/*pathogenicity ; Rotavirus Infections/prevention & control/*virology ; Signal Transduction ; Toxins, Biological ; Viral Nonstructural Proteins/immunology/*toxicity
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  • 36
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-01-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roush, W -- New York, N.Y. -- Science. 1996 Jan 5;271(5245):33.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8539595" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis elegans/*embryology/genetics ; *Caenorhabditis elegans Proteins ; *Embryonic Development ; Female ; Fertilization ; Genes, Helminth ; Helminth Proteins/genetics/*physiology ; Male ; Mutation ; *Nuclear Proteins ; Oocytes/physiology ; Spermatozoa/*chemistry/physiology
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  • 37
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-05-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Landfield, P W -- McEwan, B S -- Sapolsky, R M -- Meaney, M J -- New York, N.Y. -- Science. 1996 May 31;272(5266):1249-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650531" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Animals ; Cell Count ; Cell Death ; Hippocampus/*cytology ; Humans ; Memory Disorders/etiology ; Neurons/*cytology ; Rats
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  • 38
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-06-28
    Description: Activated epidermal growth factor (EGF) receptors induce the formation of various complexes of intracellular signaling proteins that are mediated by SRC homology 2 (SH2) and SH3 domains. The activated receptors are also rapidly internalized into the endocytotic compartment and degraded in lysosomes. EGF stimulation of canine epithelial cells induced a rapid and transient association of the SH3-SH2-SH3 protein GRB2 with dynamin, a guanosine triphosphatase that regulates endocytosis. Disruption of GRB2 interactions by microinjection of a peptide corresponding to the GRB2 SH2 domain or its phosphopeptide ligand blocked EGF receptor endocytosis; other SH2 domains that bind EGF receptors or antibodies that neutralize RAS did not. Both activation and termination of EGF signaling appear to be regulated by the diverse interactions of GRB2.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Z -- Moran, M F -- New York, N.Y. -- Science. 1996 Jun 28;272(5270):1935-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Banting and Best Department of Medical Research, University of Toronto, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8658166" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Animals ; Antibodies, Monoclonal ; Cell Line ; Dogs ; Dynamins ; *Endocytosis/drug effects ; Epidermal Growth Factor/pharmacology ; GRB2 Adaptor Protein ; GTP Phosphohydrolases/metabolism ; Microinjections ; Peptide Fragments/pharmacology ; Proteins/*metabolism ; Receptor, Epidermal Growth Factor/*metabolism ; Receptors, Transferrin/metabolism ; Recombinant Fusion Proteins/pharmacology ; Signal Transduction ; ras Proteins/immunology/physiology ; src Homology Domains/physiology
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  • 39
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-03-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bork, P -- New York, N.Y. -- Science. 1996 Mar 8;271(5254):1431-2; author reply 1434-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8596918" target="_blank"〉PubMed〈/a〉
    Keywords: Alternative Splicing ; Amino Acid Sequence ; Animals ; DNA, Complementary ; Female ; Frameshifting, Ribosomal ; Humans ; Male ; Molecular Sequence Data ; Protein Sorting Signals/chemistry ; Protein-Tyrosine Kinases/*chemistry/genetics ; Proto-Oncogene Proteins/*chemistry/genetics ; Receptor Protein-Tyrosine Kinases/*chemistry/genetics ; Sequence Alignment ; Sperm-Ovum Interactions ; Spermatozoa/*chemistry
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  • 40
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-03-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Brien, C -- New York, N.Y. -- Science. 1996 Mar 22;271(5256):1672.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8596927" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line ; Chromosome Mapping ; Chromosomes, Human, Pair 21/*genetics ; Cystatin B ; Cystatins/*genetics ; Cysteine Proteinase Inhibitors/*genetics ; Epilepsies, Myoclonic/*genetics ; Female ; Humans ; Male ; Mutation ; Pedigree ; RNA, Messenger/genetics/metabolism
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  • 41
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-03-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wickelgren, I -- New York, N.Y. -- Science. 1996 Mar 1;271(5253):1229-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638100" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Animals ; Cell Count ; Cell Death ; Hippocampus/*cytology ; Humans ; Memory Disorders/*etiology ; Neurons/*cytology ; Pyramidal Cells/*cytology ; Rats
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  • 42
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-05-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Birchler, J A -- New York, N.Y. -- Science. 1996 May 24;272(5265):1190-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638167" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA-Binding Proteins/genetics/metabolism ; *Dosage Compensation, Genetic ; Drosophila/*genetics ; Drosophila Proteins ; Female ; Male ; Nuclear Proteins/genetics/metabolism ; Transcription Factors/genetics/metabolism ; X Chromosome/*genetics/metabolism
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  • 43
    Publication Date: 1996-02-02
    Description: The Rho guanosine 5'-triphosphatase (GTPase) cycles between the active guanosine triphosphate (GTP)-bound form and the inactive guanosine diphosphate-bound form and regulates cell adhesion and cytokinesis, but how it exerts these actions is unknown. The yeast two-hybrid system was used to clone a complementary DNA for a protein (designated Rhophilin) that specifically bound to GTP-Rho. The Rho-binding domain of this protein has 40 percent identity with a putative regulatory domain of a protein kinase, PKN. PKN itself bound to GTP-Rho and was activated by this binding both in vitro and in vivo. This study indicates that a serine-threonine protein kinase is a Rho effector and presents an amino acid sequence motif for binding to GTP-Rho that may be shared by a family of Rho target proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watanabe, G -- Saito, Y -- Madaule, P -- Ishizaki, T -- Fujisawa, K -- Morii, N -- Mukai, H -- Ono, Y -- Kakizuka, A -- Narumiya, S -- New York, N.Y. -- Science. 1996 Feb 2;271(5249):645-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Kyoto University Faculty of Medicine, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8571126" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; Animals ; Cell Line ; Cloning, Molecular ; Enzyme Activation ; GTP Phosphohydrolases/*metabolism ; GTP-Binding Proteins/chemistry/*metabolism ; Guanosine Triphosphate/metabolism ; Humans ; Membrane Proteins/*metabolism ; Mice ; Molecular Sequence Data ; Phosphorylation ; Protein Kinase C/chemistry/*metabolism ; *Protein-Serine-Threonine Kinases ; Recombinant Fusion Proteins/metabolism ; Saccharomyces cerevisiae/genetics ; Signal Transduction ; ras Proteins ; *rho GTP-Binding Proteins ; rhoA GTP-Binding Protein ; rhoB GTP-Binding Protein
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  • 44
    Publication Date: 1996-05-24
    Description: The entorhinal cortex provides the major cortical input to the hippocampus, and both structures have been implicated in memory processes. The dynamics of neuronal circuits in the entorhinal-hippocampal system were studied in slices by optical imaging with high spatial and temporal resolution. Reverberation of neural activity was detected in the entorhinal cortex and was more prominent when the inhibition due to gamma-aminobutyric acid was slightly suppressed. Neural activity was transferred in a frequency-dependent way from the entorhinal cortex to the hippocampus. The entorhinal neuronal circuit could contribute to memory processes by holding information and selectively gating the entry of information into the hippocampus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iijima, T -- Witter, M P -- Ichikawa, M -- Tominaga, T -- Kajiwara, R -- Matsumoto, G -- New York, N.Y. -- Science. 1996 May 24;272(5265):1176-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular and Cellular Neuroscience Section, Electrotechnical Laboratory, Ibaraki, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638163" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bicuculline/pharmacology ; Electric Stimulation ; Entorhinal Cortex/*physiology ; GABA Antagonists/pharmacology ; Hippocampus/*physiology ; Image Processing, Computer-Assisted ; In Vitro Techniques ; Male ; Memory/*physiology ; Microscopy, Fluorescence ; Neural Pathways ; Rats ; Rats, Wistar ; Synaptic Transmission/drug effects
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  • 45
    Publication Date: 1996-09-06
    Description: Subdivision of the limb primordia of Drosophila into anterior and posterior compartments triggers cell interactions that pattern the legs and wings. A comparable compartment-based mechanism is used to pattern the dorsal-ventral axis of the wing. Evidence is presented here for a mechanism based on cell interaction, rather than on compartment formation, that distinguishes dorsal from ventral in the leg. Mutual repression by Wingless and Decapentaplegic signaling systems generates a stable regulatory circuit by which each gene maintains its own expression in a spatially restricted domain. Compartment-independent patterning mechanisms may be used by other organisms during development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brook, W J -- Cohen, S M -- New York, N.Y. -- Science. 1996 Sep 6;273(5280):1373-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉European Molecular Biology Laboratory, Meyerhofstr 1, 69117 Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8703069" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Genetically Modified ; Cell Lineage ; Drosophila/*genetics/growth & development ; *Drosophila Proteins ; Extremities/growth & development ; *Gene Expression Regulation, Developmental ; *Genes, Insect ; Insect Hormones/*genetics/physiology ; Molecular Sequence Data ; Morphogenesis ; Proto-Oncogene Proteins/*genetics/physiology ; Signal Transduction ; Wnt1 Protein
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  • 46
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-11-01
    Description: The neurotransmitter functions of nitric oxide are dependent on dynamic regulation of its biosynthetic enzyme, neuronal nitric oxide synthase (nNOS). By means of a yeast two-hybrid screen, a 10-kilodalton protein was identified that physically interacts with and inhibits the activity of nNOS. This inhibitor, designated PIN, appears to be one of the most conserved proteins in nature, showing 92 percent amino acid identity with the nematode and rat homologs. Binding of PIN destabilizes the nNOS dimer, a conformation necessary for activity. These results suggest that PIN may regulate numerous biological processes through its effects on nitric oxide synthase activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jaffrey, S R -- Snyder, S H -- DA00074/DA/NIDA NIH HHS/ -- GM-07309/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Nov 1;274(5288):774-7.〈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/8864115" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Carrier Proteins/chemistry/genetics/*metabolism/pharmacology ; Cell Line ; Cyclic GMP/metabolism ; Dimerization ; *Drosophila Proteins ; Dyneins ; Enzyme Inhibitors/chemistry/*metabolism/pharmacology ; Humans ; Molecular Sequence Data ; Molecular Weight ; Neurons/enzymology ; Nitric Oxide Synthase/*antagonists & inhibitors/metabolism ; Rats ; Recombinant Fusion Proteins/metabolism/pharmacology ; Saccharomyces cerevisiae ; Transfection
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  • 47
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-06-14
    Description: Mitogen-activated protein kinase (MAPK) cascades, termed MAPK modules, channel extracellular signals into specific cellular responses. Chimeric molecules were constructed between p38 and p44 MAPKs, which transduce stress and growth factor signals, respectively. A discrete region of 40 residues located in the amono-terminal p38MAPK lobe directed the specificity of response to extracellular signals, whereas the p44MAPK chimera, expressed in vivo, redirected stress signals into early mitogenic responses, demonstrating the functional independence of these domains.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brunet, A -- Pouyssegur, J -- New York, N.Y. -- Science. 1996 Jun 14;272(5268):1652-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre de Biochemie-CNRS, UMR134, Parc Valrose, Faculte des Sciences, Nice, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8658140" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Anisomycin/pharmacology ; Binding Sites ; Calcium-Calmodulin-Dependent Protein Kinases/genetics/*metabolism ; Cell Division ; Cell Line ; Cricetinae ; Cricetulus ; Enzyme Activation ; Gene Expression Regulation ; Genes, fos ; Growth Substances/metabolism ; Mice ; Mitogen-Activated Protein Kinase 3 ; *Mitogen-Activated Protein Kinases ; Molecular Sequence Data ; Phosphorylation/drug effects ; Protein Kinases/metabolism ; Protein-Serine-Threonine Kinases/metabolism ; Recombinant Fusion Proteins/genetics/metabolism ; Ribosomal Protein S6 Kinases ; Signal Transduction ; Sorbitol/pharmacology ; Substrate Specificity ; p38 Mitogen-Activated Protein Kinases
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  • 48
    Publication Date: 1996-12-06
    Description: The obesity syndrome of ob/ob mice results from lack of leptin, a hormone released by fat cells that acts in the brain to suppress feeding and stimulate metabolism. Neuropeptide Y (NPY) is a neuromodulator implicated in the control of energy balance and is overproduced in the hypothalamus of ob/ob mice. To determine the role of NPY in the response to leptin deficiency, ob/ob mice deficient for NPY were generated. In the absence of NPY, ob/ob mice are less obese because of reduced food intake and increased energy expenditure, and are less severely affected by diabetes, sterility, and somatotropic defects. These results suggest that NPY is a central effector of leptin deficiency.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Erickson, J C -- Hollopeter, G -- Palmiter, R D -- New York, N.Y. -- Science. 1996 Dec 6;274(5293):1704-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Biochemistry, University of Washington, Box 357370, Seattle, WA 98195-7370, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8939859" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/pathology ; Animals ; Blood Glucose/analysis ; Body Composition ; Body Height ; Body Weight ; Diabetes Mellitus/etiology ; Diabetes Mellitus, Type 2/etiology ; Eating ; Energy Metabolism ; Female ; Fertility ; Insulin-Like Growth Factor I/metabolism ; Leptin ; Male ; Mice ; Mice, Mutant Strains ; Mice, Obese ; Neuropeptide Y/deficiency/genetics/*physiology ; Obesity/pathology/*physiopathology ; Oxygen Consumption ; Proteins/genetics/*physiology ; RNA, Messenger/metabolism
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  • 49
    Publication Date: 1996-12-20
    Description: The human Kv1.5 potassium channel (hKv1.5) contains proline-rich sequences identical to those that bind to Src homology 3 (SH3) domains. Direct association of the Src tyrosine kinase with cloned hKv1.5 and native hKv1.5 in human myocardium was observed. This interaction was mediated by the proline-rich motif of hKv1.5 and the SH3 domain of Src. Furthermore, hKv1.5 was tyrosine phosphorylated, and the channel current was suppressed, in cells coexpressing v-Src. These results provide direct biochemical evidence for a signaling complex composed of a potassium channel and a protein tyrosine kinase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holmes, T C -- Fadool, D A -- Ren, R -- Levitan, I B -- F32 NS009952/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2089-91.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Volen Center for Complex Systems, Brandeis University, Waltham, MA 02254, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8953041" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cell Line ; Cloning, Molecular ; Humans ; Kv1.5 Potassium Channel ; Molecular Sequence Data ; Myocardium/chemistry ; Oncogene Protein pp60(v-src)/metabolism ; Patch-Clamp Techniques ; Phosphorylation ; Phosphotyrosine/metabolism ; Potassium Channels/chemistry/*metabolism ; *Potassium Channels, Voltage-Gated ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Transfection ; src Homology Domains/*physiology ; src-Family Kinases/chemistry/*metabolism
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  • 50
    Publication Date: 1996-01-05
    Description: A complete and accurate set of experimental crystallographic phases to a resolution of 1.8 angstroms was obtained for a 230-residue dimeric fragment of rat mannose-binding protein A with the use of multiwavelength anomalous dispersion (MAD) phasing. An accurate image of the crystal structure could thus be obtained without resort to phases calculated from a model. Partially reduced disulfide bonds, local disorder, and differences in the mobility of chemically equivalent molecules are apparent in the experimental electron density map. A solvation layer is visible that includes well-ordered sites of hydration around polar and charged protein atoms, as well as diffuse, partially disordered solvent shells around exposed hydrophobic groups. Because the experimental phases and the resulting electron density map are free from the influence of a model, they provide a stringent test of theoretical models of macromolecular solvation, motion, and conformational heterogeneity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burling, F T -- Weis, W I -- Flaherty, K M -- Brunger, A T -- GM50565/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Jan 5;271(5245):72-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Yale University, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8539602" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carrier Proteins/*chemistry ; Chemistry, Physical ; Crystallization ; *Crystallography, X-Ray ; Hydrogen Bonding ; Mannose/*metabolism ; *Mannose-Binding Lectin ; Models, Molecular ; Molecular Sequence Data ; Physicochemical Phenomena ; *Protein Conformation ; Rats ; Solvents ; Water
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  • 51
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-11-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Joffe, M -- New York, N.Y. -- Science. 1996 Nov 22;274(5291):1285-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8966591" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Drug Synergism ; Estradiol/metabolism ; Estrogens, Non-Steroidal/metabolism/*pharmacology ; Humans ; Insecticides/metabolism/*pharmacology ; Polychlorinated Biphenyls/metabolism/*pharmacology ; Rats ; Receptors, Estrogen/drug effects/*metabolism
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  • 52
    Publication Date: 1996-02-09
    Description: Bruton's tyrosine kinase (BTK) is pivotal in B cell activation and development through its participation in the signaling pathways of multiple hematopoietic receptors. The mechanisms controlling BTK activation were studied here by examination of the biochemical consequences of an interaction between BTK and SRC family kinases. This interaction of BTK with SRC kinases transphosphorylated BTK on tyrosine at residue 551, which led to BTK activation. BTK then autophosphorylated at a second site. The same two sites were phosphorylated upon B cell antigen receptor cross-linking. The activated BTK was predominantly membrane-associated, which suggests that BTK integrates distinct receptor signals resulting in SRC kinase activation and BTK membrane targeting.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rawlings, D J -- Scharenberg, A M -- Park, H -- Wahl, M I -- Lin, S -- Kato, R M -- Fluckiger, A C -- Witte, O N -- Kinet, J P -- AR01912/AR/NIAMS NIH HHS/ -- AR36834/AR/NIAMS NIH HHS/ -- CA09120-20/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1996 Feb 9;271(5250):822-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Molecular Genetics, University of California, Los Angeles 90095-1662, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8629002" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; B-Lymphocytes/*enzymology ; Cell Line, Transformed ; Cell Membrane/enzymology ; Enzyme Activation ; Immunoglobulin M/immunology ; Lymphocyte Activation ; Mice ; Mutation ; Phosphopeptides/analysis ; Phosphorylation ; Phosphotyrosine/metabolism ; Protein-Tyrosine Kinases/chemistry/genetics/*metabolism ; Receptors, Antigen, B-Cell/metabolism ; Signal Transduction ; src-Family Kinases/*metabolism
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  • 53
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-08-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abramson, P -- Pinkerton, S D -- New York, N.Y. -- Science. 1996 Aug 30;273(5279):1155-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8787116" target="_blank"〉PubMed〈/a〉
    Keywords: Culture ; *Data Collection ; Female ; Humans ; Male ; Sampling Studies ; *Sexual Behavior
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  • 54
    Publication Date: 1996-10-25
    Description: Metabotropic glutamate receptors (mGluRs) regulate transmitter release at mammalian central synapses. However, because of the difficulty of recording from mammalian presynaptic terminals, the mechanism underlying mGluR-mediated presynaptic inhibition is not known. Here, simultaneous recordings from a giant presynaptic terminal, the calyx of Held, and its postsynaptic target in the medial nucleus of the trapezoid body were obtained in rat brainstem slices. Agonists of mGluRs suppressed a high voltage-activated P/Q-type calcium conductance in the presynaptic terminal, thereby inhibiting transmitter release at this glutamatergic synapse. Because several forms of presynaptic modulation and plasticity are mediated by mGluRs, this identification of a target ion channel is a first step toward elucidation of their molecular mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Takahashi, T -- Forsythe, I D -- Tsujimoto, T -- Barnes-Davies, M -- Onodera, K -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1996 Oct 25;274(5287):594-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurophysiology, Institute for Brain Research, Faculty of Medicine, University of Tokyo, Tokyo 113, Japan. ttakahas-tky@umin.u-tokyo.ac.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8849448" target="_blank"〉PubMed〈/a〉
    Keywords: Aminobutyrates/pharmacology ; Animals ; Brain Stem ; Cadmium/pharmacology ; Calcium/*metabolism ; Calcium Channel Blockers/pharmacology ; Calcium Channels/drug effects/*metabolism ; Excitatory Amino Acid Agonists/pharmacology ; In Vitro Techniques ; Neurotransmitter Agents/metabolism ; Patch-Clamp Techniques ; Potassium/metabolism ; Potassium Channels/drug effects/metabolism ; Presynaptic Terminals/*metabolism ; Rats ; Rats, Wistar ; Receptors, Metabotropic Glutamate/agonists/*metabolism ; Synapses/*metabolism ; *Synaptic Transmission
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  • 55
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-11-15
    Description: The generation of distinct neuronal cell types in appropriate numbers and at precise positions underlies the assembly of neural circuits that encode animal behavior. Despite the complexity of the vertebrate central nervous system, advances have been made in defining the principles that control the diversification and patterning of its component cells. A combination of molecular genetic, biochemical, and embryological assays has begun to reveal the identity and mechanism of action of molecules that induce and pattern neural tissue and the role of transcription factors in establishing generic and specific neuronal fates. Some of these advances are discussed here, focusing on the spinal cord as a model system for analyzing the molecular control of central nervous system development in vertebrates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tanabe, Y -- Jessell, T M -- New York, N.Y. -- Science. 1996 Nov 15;274(5290):1115-23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Biochemistry and Molecular Biophysics, Center for Neurobiology and Behavior, Columbia University, New York, NY 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8895454" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Body Patterning ; Cell Differentiation ; Ectoderm/cytology/physiology ; *Embryonic Induction ; Gene Expression Regulation, Developmental ; Motor Neurons/cytology/physiology ; Neurons/*cytology/physiology ; Notochord/physiology ; Signal Transduction ; Spinal Cord/cytology/*embryology ; Transcription Factors/physiology
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  • 56
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-04-19
    Description: Many of the cell fate decisions in precursor B cells and more mature B cells are controlled by membrane immunoglobulin (Ig)M heavy chain (mu) and the Ig alpha-Ig beta signal transducers. The role of Ig beta in regulating early B cell development was examined in mice that lack Ig beta (Ig beta-/-). These mice had a complete block in B cell development at the immature CD43+B220+ stage. Immunoglobulin heavy chain diversity (DH) and joining (JH) segments rearranged, but variable (VH) to DJH recombination and immunoglobulin messenger RNA expression were compromised. These experiments define an unexpected, early requirement for Ig(beta) to produce B cells that can complete VDJH recombination.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gong, S -- Nussenzweig, M C -- New York, N.Y. -- Science. 1996 Apr 19;272(5260):411-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Rockefeller University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8602530" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/genetics/*physiology ; Antigens, CD79 ; B-Lymphocytes/cytology/*immunology ; Gene Expression ; *Gene Rearrangement, B-Lymphocyte, Heavy Chain ; Gene Targeting ; Genes, Immunoglobulin ; Immunoglobulin Heavy Chains/*genetics ; Immunoglobulin Joining Region/genetics ; Immunoglobulin Light Chains/*genetics ; Immunoglobulin Variable Region/genetics ; Immunoglobulin mu-Chains/biosynthesis/genetics/physiology ; Lymph Nodes ; Mice ; Mice, Inbred C57BL ; Mutation ; RNA, Messenger/genetics ; Receptors, Antigen, B-Cell/physiology ; *Recombination, Genetic ; Signal Transduction
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  • 57
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-11-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roizen, R -- New York, N.Y. -- Science. 1996 Nov 29;274(5292):1450-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8966611" target="_blank"〉PubMed〈/a〉
    Keywords: Alcoholism/epidemiology/*history ; Female ; History, 20th Century ; Humans ; Male ; New York/epidemiology ; Patient Admission
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  • 58
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-10-11
    Description: Hedgehog (Hh) proteins comprise a family of secreted signaling molecules essential for patterning a variety of structures in animal embryogenesis. During biosynthesis, Hh undergoes an autocleavage reaction, mediated by its carboxyl-terminal domain, that produces a lipid-modified amino-terminal fragment responsible for all known Hh signaling activity. Here it is reported that cholesterol is the lipophilic moiety covalently attached to the amino-terminal signaling domain during autoprocessing and that the carboxyl-terminal domain acts as an intramolecular cholesterol transferase. This use of cholesterol to modify embryonic signaling proteins may account for some of the effects of perturbed cholesterol biosynthesis on animal development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Porter, J A -- Young, K E -- Beachy, P A -- New York, N.Y. -- Science. 1996 Oct 11;274(5285):255-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Molecular Biology and Genetics, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8824192" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Cells, Cultured ; Cholesterol/*metabolism ; Dithiothreitol/pharmacology ; Drosophila ; *Drosophila Proteins ; *Embryonic Induction ; Embryonic and Fetal Development ; Hedgehog Proteins ; Humans ; Protein Processing, Post-Translational ; Proteins/genetics/*metabolism ; Signal Transduction ; *Trans-Activators
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  • 59
    Publication Date: 1996-01-05
    Description: Children with language-based learning impairments (LLIs) have major deficits in their recognition of some rapidly successive phonetic elements and nonspeech sound stimuli. In the current study, LLI children were engaged in adaptive training exercises mounted as computer "games" designed to drive improvements in their "temporal processing" skills. With 8 to 16 hours of training during a 20-day period, LLI children improved markedly in their abilities to recognize brief and fast sequences of nonspeech and speech stimuli.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Merzenich, M M -- Jenkins, W M -- Johnston, P -- Schreiner, C -- Miller, S L -- Tallal, P -- New York, N.Y. -- Science. 1996 Jan 5;271(5245):77-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉W. M. Keck Center for Integrative Neurosciences, University of California, San Francisco 94143-0732, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8539603" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; Child, Preschool ; Female ; Humans ; Language Disorders/*therapy ; *Language Therapy ; Learning Disorders/*therapy ; Male ; *Software ; Speech Perception ; *Video Games
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  • 60
    Publication Date: 1996-05-03
    Description: A mouse model of familial hypertrophic cardiomyopathy (FHC) was generated by the introduction of an Arg 403 --〉 Gln mutation into the alpha cardiac myosin heavy chain (MHC) gene. Homozygous alpha MHC 403/403 mice died 7 days after birth, and sedentary heterozygous alpha MHC 403/+ mice survived for 1 year. Cardiac histopathology and dysfunction in the alpha MHC 403/+ mice resembled human FHC. Cardiac dysfunction preceded histopathologic changes, and myocyte disarray, hypertrophy, and fibrosis increased with age. Young male alpha MHC 403/+ mice showed more evidence of disease than did their female counterparts. Preliminary results suggested that exercise capacity may have been compromised in the alpha MHC 403/+ mice. This mouse model may help to define the natural history of FHC.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Geisterfer-Lowrance, A A -- Christe, M -- Conner, D A -- Ingwall, J S -- Schoen, F J -- Seidman, C E -- Seidman, J G -- New York, N.Y. -- Science. 1996 May 3;272(5262):731-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8614836" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cardiac Output ; Cardiomyopathy, Hypertrophic/*genetics/pathology/physiopathology ; *Disease Models, Animal ; Female ; Gene Transfer Techniques ; Heart/*physiopathology ; Heterozygote ; Homozygote ; Humans ; Male ; Mice ; Mice, Mutant Strains ; Molecular Sequence Data ; Mutation ; Myocardium/chemistry/*pathology ; Myosin Heavy Chains/*genetics ; Physical Exertion ; Sex Characteristics ; Ventricular Function, Left
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  • 61
    Publication Date: 1996-02-09
    Description: Genetic studies indicated that the Drosophila melanogaster protein REAPER (RPR) controls apoptosis during embryo development. Induction of RPR expression in Drosophila Schneider cells rapidly stimulated apoptosis. RPR-mediated apoptosis was blocked by N-benzyloxycarbonyl-Val-Ala-Asp-fluoromethylketone (Z-VAD-fmk), which suggests that an interleukin-1 beta converting enzyme (ICE)-like protease is required for RPR function. RPR-induced apoptosis was associated with increased ceramide production that was also blocked by Z-VAD-fmk, which suggests that ceramide generation requires an ICE-like protease as well. Thus, the intracellular RPR protein uses cell death signaling pathways similar to those used by the vertebrate transmembrane receptors Fas (CD95) and tumor necrosis factor receptor type 1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pronk, G J -- Ramer, K -- Amiri, P -- Williams, L T -- New York, N.Y. -- Science. 1996 Feb 9;271(5250):808-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Chiron Corporation, Emeryville, CA 94608, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8628997" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Chloromethyl Ketones/pharmacology ; Amino Acid Sequence ; Animals ; *Apoptosis/drug effects ; Caspase 1 ; Cell Line ; Ceramides/*metabolism/pharmacology ; Copper/pharmacology ; Copper Sulfate ; Cysteine Endopeptidases/*metabolism ; *Drosophila Proteins ; Drosophila melanogaster/*cytology/embryology/genetics/metabolism ; Enzyme Activation ; Gene Expression ; Molecular Sequence Data ; Peptides/genetics/*physiology ; Protease Inhibitors/pharmacology ; Signal Transduction ; Transfection
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  • 62
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-12-13
    Description: Neuronal responses in the caudomedial neostriatum (NCM) of adult zebra finches (Taeniopygia guttata) decreased upon repeated, unreinforced presentations of conspecific song, calls, or other complex sounds. This "stimulus-specific habituation" is a form of learning, and its spontaneous loss, a form of "forgetting." Spontaneous forgetting occurred only at narrowly defined times (2 to 3, 6 to 7, 14 to 15, 17 to 18.5, 46 to 48, or 85 to 89 hours after first exposure to a stimulus), determined by stimulus class, number of presentations, and interval between presentations. The first five forgetting times coincided with periods when gene expression and protein synthesis in NCM were required for maintenance of the longer lasting (85 to 89 hours) habituation. The number of successive episodes of gene expression induced by a stimulus, but occurring long after stimulus presentation, appears to determine the quantal duration of auditory memories.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chew, S J -- Vicario, D S -- Nottebohm, F -- MH18343/MH/NIMH NIH HHS/ -- MH40900/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 13;274(5294):1909-14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Animal Behavior, Rockefeller University, 1230 York Avenue, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8943204" target="_blank"〉PubMed〈/a〉
    Keywords: Acoustic Stimulation ; Animals ; Birds/*physiology ; Cycloheximide/pharmacology ; Dactinomycin/pharmacology ; Female ; Gene Expression ; *Habituation, Psychophysiologic ; Male ; *Memory ; Neostriatum/*physiology ; *Neuronal Plasticity ; Neurons/*physiology ; Protein Biosynthesis ; RNA/biosynthesis ; Time Factors ; Vocalization, Animal
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  • 63
    Publication Date: 1996-05-31
    Description: A second gene for autosomal dominant polycystic kidney disease was identified by positional cloning. Nonsense mutations in this gene (PKD2) segregated with the disease in three PKD2 families. The predicted 968-amino acid sequence of the PKD2 gene product has six transmembrane spans with intracellular amino- and carboxyl-termini. The PKD2 protein has amino acid similarity with PKD1, the Caenorhabditis elegans homolog of PKD1, and the family of voltage-activated calcium (and sodium) channels, and it contains a potential calcium-binding domain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mochizuki, T -- Wu, G -- Hayashi, T -- Xenophontos, S L -- Veldhuisen, B -- Saris, J J -- Reynolds, D M -- Cai, Y -- Gabow, P A -- Pierides, A -- Kimberling, W J -- Breuning, M H -- Deltas, C C -- Peters, D J -- Somlo, S -- DK02015/DK/NIDDK NIH HHS/ -- DK48383/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1996 May 31;272(5266):1339-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Renal Division, Department of Medicine and Molecular Genetics, Albert Einstein College of Medicine, Bronx, NY 10461, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650545" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Caenorhabditis elegans/chemistry/genetics ; Calcium Channels/chemistry/genetics ; Chromosome Mapping ; Chromosomes, Human, Pair 4 ; Cloning, Molecular ; Consensus Sequence ; Crystallography, X-Ray ; Female ; Glycosylation ; Humans ; Male ; Membrane Proteins/chemistry/*genetics/physiology ; Molecular Sequence Data ; Mutation ; Pedigree ; Phenotype ; Polycystic Kidney, Autosomal Dominant/*genetics ; Polymorphism, Single-Stranded Conformational ; Proteins/chemistry/genetics ; Sodium Channels/chemistry/genetics ; TRPP Cation Channels
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  • 64
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-12-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roush, W -- New York, N.Y. -- Science. 1996 Dec 13;274(5294):1836.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8984640" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cloning, Molecular ; Drosophila melanogaster/*genetics/physiology ; Female ; Gene Expression Regulation ; *Genes, Insect ; Male ; Neurons/metabolism ; RNA Splicing ; *Sexual Behavior, Animal
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  • 65
    Publication Date: 1996-09-20
    Description: Members of a previously unidentified family of potassium channel subunits were cloned from rat and human brain. The messenger RNAs encoding these subunits were widely expressed in brain with distinct yet overlapping patterns, as well as in several peripheral tissues. Expression of the messenger RNAs in Xenopus oocytes resulted in calcium-activated, voltage-independent potassium channels. The channels that formed from the various subunits displayed differential sensitivity to apamin and tubocurare. The distribution, function, and pharmacology of these channels are consistent with the SK class of small-conductance, calcium-activated potassium channels, which contribute to the afterhyperpolarization in central neurons and other cell types.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kohler, M -- Hirschberg, B -- Bond, C T -- Kinzie, J M -- Marrion, N V -- Maylie, J -- Adelman, J P -- New York, N.Y. -- Science. 1996 Sep 20;273(5282):1709-14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Vollum Institute, L-474, Oregon Health Sciences University, 3181 Southwest Sam Jackson Road, Portland, OR 97201, USA. J. Maylie, Department of Obstetrics and Gyne.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8781233" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antisense Elements (Genetics) ; Apamin/pharmacology ; *Brain Chemistry ; Calcium/*metabolism/pharmacology ; Cloning, Molecular ; Electric Conductivity ; Female ; Humans ; Membrane Potentials ; Molecular Sequence Data ; Neurons/*physiology ; Oocytes ; Patch-Clamp Techniques ; Potassium/metabolism ; Potassium Channel Blockers ; Potassium Channels/analysis/chemistry/*physiology ; *Potassium Channels, Calcium-Activated ; RNA, Messenger/analysis/genetics ; Rats ; Rats, Sprague-Dawley ; Small-Conductance Calcium-Activated Potassium Channels ; Xenopus
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  • 66
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-11-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roush, W -- New York, N.Y. -- Science. 1996 Nov 22;274(5291):1304-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8966601" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Body Patterning ; Carcinoma, Basal Cell/genetics/therapy ; Hedgehog Proteins ; Humans ; Membrane Proteins/genetics/*metabolism ; Mutation ; Proteins/*metabolism ; Receptors, Cell Surface/*metabolism/physiology ; *Receptors, G-Protein-Coupled ; Signal Transduction ; Skin Neoplasms/genetics/therapy ; *Trans-Activators
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  • 67
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-11-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1996 Nov 8;274(5289):923.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8966573" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*epidemiology ; Adolescent ; Africa South of the Sahara/epidemiology ; Child ; Developing Countries ; Female ; Humans ; Male
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  • 68
    Publication Date: 1996-03-29
    Description: Upon contacting its postsynaptic target, a neuronal growth cone transforms into a presynaptic terminal. A membrane component on the growth cone that facilitates synapse formation was identified by means of a complementary DNA-based screen followed by genetic analysis. The late bloomer (lbl) gene in Drosophila encodes a member of the tetraspanin family of cell surface proteins. LBL protein is transiently expressed on motor axons, growth cones, and terminal arbors. In lbl mutant embryos, the growth cone of the RP3 motoneuron contacts its target muscles, but synapse formation is delayed and neighboring motoneurons display an increase in ectopic sprouting.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kopczynski, C C -- Davis, G W -- Goodman, C S -- New York, N.Y. -- Science. 1996 Mar 29;271(5257):1867-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of California, Berkeley 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8596956" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Axons/metabolism/ultrastructure ; Cloning, Molecular ; Drosophila/embryology/genetics/physiology ; *Drosophila Proteins ; *Genes, Insect ; Membrane Proteins/chemistry/genetics/*physiology ; Molecular Sequence Data ; Motor Neurons/cytology/metabolism/*physiology ; Muscles/innervation ; Mutation ; Nerve Tissue Proteins/chemistry/genetics/*physiology ; Neuromuscular Junction/*physiology ; Presynaptic Terminals/*physiology/ultrastructure ; Signal Transduction
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  • 69
    Publication Date: 1996-08-09
    Description: The c-Jun amino-terminal kinase (JNK) is activated by various heterotrimeric guanine nucleotide-binding protein (G protein)-coupled receptors, inflammatory cytokines, and stress signals. Yet, upstream mediators that link extracellular signals with the JNK signaling pathway are currently unknown. The tyrosine kinase Pyk2 was activated by tumor necrosis factor alpha, by ultraviolet irradiation, and by changes in osmolarity. Overexpression of Pyk2 led to activation of JNK, and a dominant-negative mutant of Pyk2 interfered with ultraviolet light- or osmotic shock-induced activation of JNK. Pyk2 represents a cell type-specific, stress-sensitive mediator of the JNK signaling pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tokiwa, G -- Dikic, I -- Lev, S -- Schlessinger, J -- New York, N.Y. -- Science. 1996 Aug 9;273(5276):792-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, New York University Medical Center, 550 First Avenue, New York, NY 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8670418" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anisomycin/pharmacology ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Egtazic Acid/pharmacology ; Enzyme Activation ; Focal Adhesion Kinase 2 ; GTP Phosphohydrolases/metabolism ; GTP-Binding Proteins/metabolism ; HL-60 Cells ; Humans ; JNK Mitogen-Activated Protein Kinases ; *Mitogen-Activated Protein Kinases ; Osmolar Concentration ; PC12 Cells ; Phosphorylation ; Protein-Tyrosine Kinases/*metabolism ; Rats ; *Signal Transduction ; Sorbitol/pharmacology ; Transfection ; Tumor Necrosis Factor-alpha/pharmacology ; Ultraviolet Rays
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  • 70
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-04-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morell, V -- New York, N.Y. -- Science. 1996 Apr 5;272(5258):31-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8600531" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Bipolar Disorder/*genetics ; Chromosomes, Human, Pair 13 ; Chromosomes, Human, Pair 15 ; Chromosomes, Human, Pair 18 ; Chromosomes, Human, Pair 4 ; Chromosomes, Human, Pair 6 ; Female ; Genetic Linkage ; Humans ; Lod Score ; Male ; Pedigree
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  • 71
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-12-06
    Description: In nematodes, flies, and mammals, dosage compensation equalizes X-chromosome gene expression between the sexes through chromosome-wide regulatory mechanisms that function in one sex to adjust the levels of X-linked transcripts. Here, a dosage compensation complex was identified in the nematode Caenorhabditis elegans that reduces transcript levels from the two X chromosomes in hermaphrodites. This complex contains at least four proteins, including products of the dosage compensation genes dpy-26 and dpy-27. Specific localization of the complex to the hermaphrodite X chromosomes is conferred by XX-specific regulatory genes that coordinately control both sex determination and dosage compensation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chuang, P T -- Lieb, J D -- Meyer, B J -- GM30702/GM/NIGMS NIH HHS/ -- T32 GM07127/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 6;274(5293):1736-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8939870" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis elegans/*genetics/metabolism ; *Caenorhabditis elegans Proteins ; Carrier Proteins/analysis/chemistry/*metabolism ; Disorders of Sex Development ; *Dosage Compensation, Genetic ; Electrophoresis, Polyacrylamide Gel ; Female ; Genes, Helminth ; Genes, Regulator ; Helminth Proteins/analysis/chemistry/*metabolism ; Male ; Nuclear Proteins/analysis/chemistry/*metabolism ; Precipitin Tests ; RNA, Helminth/metabolism ; RNA, Messenger/metabolism ; Sex Determination Analysis ; X Chromosome/chemistry/*metabolism
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  • 72
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-01-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morell, V -- New York, N.Y. -- Science. 1996 Jan 19;271(5247):292.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8553062" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Animals, Wild/metabolism ; *Carnivora/metabolism ; Feces/chemistry ; Female ; *Herpestidae/metabolism ; Hydrocortisone/*analysis/urine ; Male ; *Social Dominance ; Stress, Physiological/*veterinary ; Tanzania
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  • 73
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-11-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 1996 Nov 15;274(5290):1100-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8966585" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/abnormalities/embryology ; Brain Diseases/genetics ; Cell Adhesion Molecules, Neuronal/*genetics/physiology ; Cell Movement ; Cerebral Cortex/cytology/*embryology ; Cloning, Molecular ; Cyclin-Dependent Kinase 5 ; *Cyclin-Dependent Kinases ; Extracellular Matrix Proteins/*genetics/physiology ; Female ; Humans ; Intellectual Disability/genetics ; Male ; Mice ; Mice, Neurologic Mutants ; Nerve Tissue Proteins/genetics/physiology ; Neurons/*physiology ; Protein-Serine-Threonine Kinases/physiology ; Serine Endopeptidases
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  • 74
    Publication Date: 1996-01-19
    Description: About 90 percent of human pancreatic carcinomas show allelic loss at chromosome 18q. To identify candidate tumor suppressor genes on 18q, a panel of pancreatic carcinomas were analyzed for convergent sites of homozygous deletion. Twenty-five of 84 tumors had homozygous deletions at 18q21.1, a site that excludes DCC (a candidate suppressor gene for colorectal cancer) and includes DPC4, a gene similar in sequence to a Drosophila melanogaster gene (Mad) implicated in a transforming growth factor-beta (TGF-beta)-like signaling pathway. Potentially inactivating mutations in DPC4 were identified in six of 27 pancreatic carcinomas that did not have homozygous deletions at 18q21.1. These results identify DPC4 as a candidate tumor suppressor gene whose inactivation may play a role in pancreatic and possibly other human cancers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hahn, S A -- Schutte, M -- Hoque, A T -- Moskaluk, C A -- da Costa, L T -- Rozenblum, E -- Weinstein, C L -- Fischer, A -- Yeo, C J -- Hruban, R H -- Kern, S E -- CA62924/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Jan 19;271(5247):350-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8553070" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Sequence ; Animals ; Base Sequence ; Cell Division ; Chromosome Mapping ; *Chromosomes, Human, Pair 18 ; *DNA-Binding Proteins ; Gene Deletion ; Gene Expression ; *Genes, Tumor Suppressor ; Genetic Markers ; Humans ; Mice ; Molecular Sequence Data ; Mutation ; Neoplasm Transplantation ; Pancreatic Neoplasms/*genetics/pathology ; Proteins/chemistry/*genetics/physiology ; Signal Transduction ; Smad4 Protein ; *Trans-Activators ; Transforming Growth Factor beta/physiology ; Transplantation, Heterologous ; Tumor Cells, Cultured
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  • 75
    Publication Date: 1996-06-21
    Description: The paradigm of antigenic variation in parasites is the variant surface glycoprotein (VSG) of African trypanosomes. Only one VSG is expressed at any time, except for short periods during switching. The reasons for this pattern of expression and the consequences of expressing more than one VSG are unknown. Trypanosoma brucei was genetically manipulated to generate cell lines that expressed two VSGs simultaneously. These VSGs were produced in equal amounts and were homogeneously distributed on the trypanosome surface. The double-expressor cells had similar population doubling times and were as infective as wild-type cells. Thus, the simultaneous expression of two VSGs is not intrinsically harmful.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Munoz-Jordan, J L -- Davies, K P -- Cross, G A -- AI 21531/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1996 Jun 21;272(5269):1795-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Parasitology, Rockefeller University, New York 10012, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650579" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigenic Variation ; Cell Membrane/chemistry ; Gentamicins/pharmacology ; Parasitemia ; Protein Synthesis Inhibitors/pharmacology ; Rats ; Transfection ; Trypanosoma brucei brucei/genetics/growth & ; development/immunology/*metabolism/pathogenicity ; Trypanosomiasis, African/parasitology ; Variant Surface Glycoproteins, Trypanosoma/analysis/*biosynthesis/genetics
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  • 76
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-10-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 1996 Oct 25;274(5287):500-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8928002" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis elegans/genetics/physiology ; Cyclic AMP/*physiology ; Inositol Phosphates/physiology ; Ion Channels/genetics/*physiology ; Mice ; Mice, Knockout ; Mutation ; Neurons, Afferent/physiology ; Odors ; Olfactory Receptor Neurons/*physiology ; Sensation/*physiology ; Sexual Behavior, Animal ; Signal Transduction ; Smell/*physiology
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  • 77
    Publication Date: 1996-04-26
    Description: Hox genes regulate patterning during limb development. It is believed that they function in the determination of the timing and extent of local growth rates. Here, it is demonstrated that synpolydactyly, an inherited human abnormality of the hands and feet, is caused by expansions of a polyalanine stretch in the amino-terminal region of HOXD13. The homozygous phenotype includes the transformation of metacarpal and metatarsal bones to short carpal- and tarsal-like bones. The mutations identify the polyalanine stretch outside of the DNA binding domain of HOXD13 as a region necessary for proper protein function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Muragaki, Y -- Mundlos, S -- Upton, J -- Olsen, B R -- AR36819/AR/NIAMS NIH HHS/ -- AR36820/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Apr 26;272(5261):548-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8614804" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Chromosome Mapping ; Chromosomes, Human, Pair 2 ; Cloning, Molecular ; Female ; Fingers/*abnormalities/embryology ; *Genes, Homeobox ; Genetic Linkage ; Homeodomain Proteins/chemistry/*genetics/physiology ; Humans ; Male ; Molecular Sequence Data ; Morphogenesis ; Multigene Family ; Mutation ; Pedigree ; Peptides/chemistry ; Polydactyly/embryology/*genetics/radiography ; Polymerase Chain Reaction ; Syndactyly/embryology/*genetics/radiography ; Toes/*abnormalities/embryology ; *Transcription Factors
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  • 78
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-01-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dewji, N N -- Singer, S J -- New York, N.Y. -- Science. 1996 Jan 12;271(5246):159-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Medicine, University of California at San Diego, La Jolla 92093-0322, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8539612" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*genetics/metabolism ; Amyloid beta-Peptides/biosynthesis ; Amyloid beta-Protein Precursor/*genetics/metabolism ; Animals ; Brain/metabolism ; Caenorhabditis elegans/growth & development ; *Caenorhabditis elegans Proteins ; Drosophila/genetics/growth & development ; *Drosophila Proteins ; Eye Proteins/metabolism ; Female ; Helminth Proteins/genetics/metabolism ; Humans ; Membrane Glycoproteins/metabolism ; Membrane Proteins/*genetics/metabolism ; Mutation ; Neurons/metabolism ; Photoreceptor Cells, Invertebrate/growth & development/metabolism ; Presenilin-1 ; Presenilin-2 ; *Receptor Protein-Tyrosine Kinases ; Receptors, Notch ; *Receptors, Peptide ; Signal Transduction ; Vulva/growth & development/metabolism
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  • 79
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-04-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 1996 Apr 26;272(5261):482-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8614794" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cerebellum/*physiology ; Cognition/*physiology ; Humans ; Motor Activity/*physiology ; Movement/physiology ; Perception/physiology ; Psychomotor Performance/physiology ; Rats
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  • 80
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-11-01
    Description: Rearrangements of the visual pigment genes are associated with defective color vision and with differences between types of red-green color blindness. Among individuals within the most common category of defective color vision, deuteranomaly, there is a large variation in the severity of color vision loss. An examination of specific photopigment gene sites responsible for tuning photopigment absorption spectra revealed differences that predict these variations in the color defect. The results indicate that the severity of the defect in deuteranomalous color vision depends on the degree of similarity among the residual photopigments that serve vision in the color-anomalous eye.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Neitz, J -- Neitz, M -- Kainz, P M -- EY01931/EY/NEI NIH HHS/ -- EY09303/EY/NEI NIH HHS/ -- EY09620/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1996 Nov 1;274(5288):801-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular Biology, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8864125" target="_blank"〉PubMed〈/a〉
    Keywords: Blotting, Southern ; Chromosome Mapping ; Color Perception ; Color Vision Defects/*genetics ; Exons ; Gene Rearrangement ; Genetic Linkage ; Humans ; Male ; Polymerase Chain Reaction ; Retinal Pigments/*genetics ; X Chromosome
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  • 81
    Publication Date: 1996-01-19
    Description: Mutants of the Saccharomyces cerevisiae ataxia telangiectasia mutated (ATM) homolog MEC1/SAD3/ESR1 were identified that could live only if the RAD53/SAD1 checkpoint kinase was overproduced. MEC1 and a structurally related gene, TEL1, have overlapping functions in response to DNA damage and replication blocks that in mutants can be provided by overproduction of RAD53. Both MEC1 and TEL1 were found to control phosphorylation of Rad53p in response to DNA damage. These results indicate that RAD53 is a signal transducer in the DNA damage and replication checkpoint pathways and functions downstream of two members of the ATM lipid kinase family. Because several members of this pathway are conserved among eukaryotes, it is likely that a RAD53-related kinase will function downstream of the human ATM gene product and play an important role in the mammalian response to DNA damage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sanchez, Y -- Desany, B A -- Jones, W J -- Liu, Q -- Wang, B -- Elledge, S J -- DK07696/DK/NIDDK NIH HHS/ -- GM44664/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Jan 19;271(5247):357-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Verna and Mars McLean Department of Biochemistry, Department of Molecular and Human Genetics, Howard Hughes Medical Institute, 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/8553072" target="_blank"〉PubMed〈/a〉
    Keywords: Ataxia Telangiectasia Mutated Proteins ; Base Sequence ; *Cell Cycle ; *Cell Cycle Proteins ; Checkpoint Kinase 2 ; *DNA Damage ; DNA Replication ; DNA-Binding Proteins ; Fungal Proteins/*genetics/metabolism ; Gene Expression Regulation, Fungal ; *Genes, Fungal ; Intracellular Signaling Peptides and Proteins ; Molecular Sequence Data ; Mutation ; Phosphorylation ; Protein Kinases/*genetics/metabolism ; *Protein-Serine-Threonine Kinases ; Proteins/genetics/metabolism ; Saccharomyces cerevisiae/cytology/*genetics/metabolism ; *Saccharomyces cerevisiae Proteins ; Signal Transduction ; Tumor Suppressor Proteins
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  • 82
    Publication Date: 1996-05-10
    Description: The development of the thymus depends initially on epithelial-mesenchymal and subsequently on reciprocal lympho-stromal interactions. The genetic steps governing development and differentiation of the thymic microenvironment are unknown. With the use of a targeted disruption of the whn gene, which recapitulates the phenotype of the athymic nude mouse, the WHN transcription factor was shown to be the product of the nude locus. Formation of the thymic epithelial primordium before the entry of lymphocyte progenitors did not require the activity of WHN. However, subsequent differentiation of primitive precursor cells into subcapsular, cortical, and medullary epithelial cells of the postnatal thymus did depend on activity of the whn gene. These results define the first genetically separable steps during thymic epithelial differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nehls, M -- Kyewski, B -- Messerle, M -- Waldschutz, R -- Schuddekopf, K -- Smith, A J -- Boehm, T -- New York, N.Y. -- Science. 1996 May 10;272(5263):886-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Deutsches Krebsforschungszentrum, Im Neuenheimer Feld, Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8629026" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Animals, Newborn ; Base Sequence ; Cell Differentiation/*genetics ; Crosses, Genetic ; DNA-Binding Proteins/*genetics/physiology ; Epithelial Cells ; Female ; Forkhead Transcription Factors ; Gene Expression Regulation, Developmental ; Gene Targeting ; Genetic Complementation Test ; Male ; Mice ; Mice, Nude ; Molecular Sequence Data ; T-Lymphocytes/*cytology ; Thymus Gland/*cytology/embryology/metabolism ; Transcription Factors/*genetics/physiology
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  • 83
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-02-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 1996 Feb 16;271(5251):913.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8584929" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carrier Proteins/biosynthesis/chemistry/*genetics ; Chromosome Mapping ; Cloning, Molecular ; Diabetes Mellitus/*genetics ; Humans ; Leptin ; Mice ; Mutation ; Obesity/*genetics ; Proteins/genetics ; RNA, Messenger/genetics ; Rats ; *Receptors, Cell Surface ; Receptors, Cytokine/biosynthesis/chemistry/*genetics ; Receptors, Leptin
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  • 84
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-05-03
    Description: During mouse embryogenesis the production of "primitive" erythrocytes (EryP) precedes the production of "definitive" erythrocytes (EryD) in parallel with the transition of the hematopoietic site from the yolk sac to the fetal liver. On a macrophage colony-stimulating factor-deficient stromal cell line OP9, mouse embryonic stem cells were shown to give rise to EryP and EryD sequentially with a time course similar to that seen in murine ontogeny. Studies of the different growth factor requirements and limiting dilution analysis of precursor frequencies indicate that most EryP and EryD probably developed from different precursors by way of distinct differentiation pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nakano, T -- Kodama, H -- Honjo, T -- New York, N.Y. -- Science. 1996 May 3;272(5262):722-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Chemistry, Faculty of Medicine, Kyoto University, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8614833" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation ; Cell Division ; Cell Line ; Cell Lineage ; Cell Separation ; Cells, Cultured ; Coculture Techniques ; Erythroid Precursor Cells/*cytology ; *Erythropoiesis ; Erythropoietin/pharmacology ; Kinetics ; Mice ; Signal Transduction ; Stem Cell Factor/physiology
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  • 85
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-08-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sapolsky, R M -- New York, N.Y. -- Science. 1996 Aug 9;273(5276):749-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, Stanford University, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8701325" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atrophy ; Brain/pathology ; Causality ; Cushing Syndrome/metabolism/pathology ; Depressive Disorder/metabolism/pathology ; Female ; Glucocorticoids/*physiology/secretion ; Hippocampus/*pathology ; Humans ; Magnetic Resonance Imaging ; Male ; Stress Disorders, Post-Traumatic/metabolism/pathology ; Stress, Physiological/metabolism/*pathology
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  • 86
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-01-26
    Description: Two apoptosis-linked genes, named ALG-2 and ALG-3, were identified by means of a functional selection strategy. ALG-2 codes for a Ca(2+)-binding protein required for T cell receptor-, Fas-, and glucocorticoid-induced cell death. ALG-3, a partial complementary DNA that is homologous to the familial Alzheimer's disease gene STM2, rescues a T cell hybridoma from T cell receptor- and Fas-induced apoptosis. These findings suggest that ALG-2 may mediate Ca(2+)-regulated signals along the death pathway and that cell death may play a role in Alzheimer's disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vito, P -- Lacana, E -- D'Adamio, L -- New York, N.Y. -- Science. 1996 Jan 26;271(5248):521-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉T Cell Molecular Biology Unit, National Institute of Allergy and Infectious Diseases, 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/8560270" target="_blank"〉PubMed〈/a〉
    Keywords: Alkaloids/pharmacology ; Alzheimer Disease/*genetics ; Amino Acid Sequence ; Animals ; Antigens, CD95/metabolism ; *Apoptosis/drug effects ; Apoptosis Regulatory Proteins ; Calcium/metabolism ; Calcium-Binding Proteins/chemistry/genetics/*physiology ; Cell Line ; Cloning, Molecular ; DNA, Complementary ; Dactinomycin/pharmacology ; Dexamethasone/pharmacology ; Fas Ligand Protein ; Hybridomas ; Interleukin-2/metabolism ; Membrane Glycoproteins/metabolism ; Membrane Proteins/chemistry/genetics/*physiology ; Mice ; Molecular Sequence Data ; Presenilin-2 ; Receptors, Antigen, T-Cell/physiology ; Signal Transduction ; Staurosporine ; T-Lymphocytes ; Transfection ; Up-Regulation
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  • 87
    Publication Date: 1996-06-14
    Description: Drosophila limb development is organized by interactions between anterior and posterior compartment cells. Posterior cells continuously express and require engrailed (en) and secrete Hedgehog (Hh) protein. Anterior cells express the zinc-finger protein Cubitus interruptus (Ci). It is now shown that anterior cells lacking ci express hh and adopt posterior properties without expressing en. Increased levels of Ci can induce the expression of the Hh target gene decapentaplegic (dpp) in a Hh-independent manner. Thus, expression of Ci in anterior cells controls limb development (i) by restricting hh secretion to posterior cells and (ii) by conferring competence to respond to Hh by mediating the transduction of this signal.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dominguez, M -- Brunner, M -- Hafen, E -- Basler, K -- New York, N.Y. -- Science. 1996 Jun 14;272(5268):1621-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Zoologisches Institut, Universitat Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8658135" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA-Binding Proteins/genetics/*physiology ; Drosophila/embryology/genetics ; *Drosophila Proteins ; *Embryonic Induction ; Female ; Gene Expression Regulation, Developmental ; Hedgehog Proteins ; Insect Hormones/genetics/physiology ; Male ; Membrane Proteins/genetics/physiology ; Models, Biological ; Mutagenesis ; Proteins/*physiology ; Receptors, Cell Surface ; *Signal Transduction ; Transcription Factors ; Zinc Fingers/genetics/*physiology
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  • 88
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-11-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, G -- New York, N.Y. -- Science. 1996 Nov 29;274(5292):1466-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8966616" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; Humans ; Hypothalamus/physiology ; Leptin ; Male ; Obesity ; Proteins/analysis/*physiology ; Puberty/*physiology ; Sexual Maturation/physiology ; Testosterone/blood
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  • 89
    Publication Date: 1996-05-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Donnelly, P -- Tavare, S -- Balding, D J -- Griffiths, R C -- GM36232/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1996 May 31;272(5266):1357-9; author reply 1361-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650551" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA-Binding Proteins/*genetics ; *Genetics, Population ; Hominidae/*genetics ; Humans ; Introns/*genetics ; Kruppel-Like Transcription Factors ; Male ; Mutation ; Polymorphism, Genetic ; Population Density ; Probability ; Time Factors ; Transcription Factors/*genetics ; Y Chromosome/*genetics
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  • 90
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-11-01
    Description: Studies on mice deficient in nuclear factor kappa B (NF-kappaB) subunits have shown that this transcription factor is important for lymphocyte responses to antigens and cytokine-inducible gene expression. In particular, the RelA (p65) subunit is required for induction of tumor necrosis factor-alpha (TNF-alpha)-dependent genes. Treatment of RelA-deficient (RelA-/-) mouse fibroblasts and macrophages with TNF-alpha resulted in a significant reduction in viability, whereas RelA+/+ cells were unaffected. Cytotoxicity to both cell types was mediated by TNF receptor 1. Reintroduction of RelA into RelA-/- fibroblasts resulted in enhanced survival, demonstrating that the presence of RelA is required for protection from TNF-alpha. These results have implications for the treatment of inflammatory and proliferative diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beg, A A -- Baltimore, D -- New York, N.Y. -- Science. 1996 Nov 1;274(5288):782-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8864118" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Antigens, CD/metabolism ; *Cell Death ; Cell Survival ; Cells, Cultured ; Gene Expression Regulation ; Humans ; Macrophages/cytology ; Mice ; NF-kappa B/genetics/*physiology ; Receptors, Tumor Necrosis Factor/metabolism ; Receptors, Tumor Necrosis Factor, Type I ; Signal Transduction ; Transcription Factor RelA ; Transfection ; Tumor Necrosis Factor-alpha/*pharmacology/physiology
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  • 91
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-10-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Norman, W C 3rd -- New York, N.Y. -- Science. 1996 Oct 18;274(5286):327.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8927983" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carcinogenicity Tests ; Carcinogens/*toxicity ; Humans ; Methylene Chloride/*toxicity ; Mice ; Neoplasms/*chemically induced ; Rats
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  • 92
    Publication Date: 1996-08-30
    Description: The immediate-early transcription factor NGFI-A (also called Egr-1, zif/268, or Krox-24) is thought to couple extracellular signals to changes in gene expression. Although activins and inhibins regulate follicle-stimulating hormone (FSH) synthesis, no factor has been identified that exclusively regulates luteinizing hormone (LH) synthesis. An analysis of NGFI-A-deficient mice derived from embryonic stem cells demonstrated female infertility that was secondary to LH-beta deficiency. Ovariectomy led to increased amounts of FSH-beta but not LH-beta messenger RNA, which suggested a pituitary defect. A conserved, canonical NGFI-A site in the LH-beta promoter was required for synergistic activation by NGFI-A and steroidogenic factor-1 (SF-1). NGFI-A apparently influences female reproductive capacity through its regulation of LH-beta transcription.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, S L -- Sadovsky, Y -- Swirnoff, A H -- Polish, J A -- Goda, P -- Gavrilina, G -- Milbrandt, J -- CA53524/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Aug 30;273(5279):1219-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Washington University School of Medicine, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8703054" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line ; DNA-Binding Proteins/*genetics ; Early Growth Response Protein 1 ; Female ; Follicle Stimulating Hormone/genetics ; Follicle Stimulating Hormone, beta Subunit ; Fushi Tarazu Transcription Factors ; *Gene Expression Regulation ; Gene Targeting ; Gonadotropins/pharmacology ; Homeodomain Proteins ; *Immediate-Early Proteins ; Infertility, Female/*genetics ; Luteinizing Hormone/analysis/*deficiency/*genetics ; Male ; Mice ; Molecular Sequence Data ; Ovary/drug effects/physiology ; Pituitary Gland/metabolism ; Promoter Regions, Genetic ; Receptors, Cytoplasmic and Nuclear ; Steroidogenic Factor 1 ; Transcription Factors/*genetics ; Transfection ; Uterus/drug effects ; Zinc Fingers
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  • 93
    Publication Date: 1996-08-09
    Description: Cross-linking of the antigen receptor on lymphocytes by antigens or antibodies to the receptor results in activation of enzymes of the protein kinase C (PKC) family. Mice homozygous for a targeted disruption of the gene encoding the PKC-betaI and PKC-betaII isoforms develop an immunodeficiency characterized by impaired humoral immune responses and reduced cellular responses of B cells, which is similar to X-linked immunodeficiency in mice. Thus PKC-betaI and PKC-betaII play an important role in B cell activation and may be functionally linked to Bruton's tyrosine kinase in antigen receptor-mediated signal transduction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leitges, M -- Schmedt, C -- Guinamard, R -- Davoust, J -- Schaal, S -- Stabel, S -- Tarakhovsky, A -- New York, N.Y. -- Science. 1996 Aug 9;273(5276):788-91.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max-Delbruck-Laboratorium in der Max-Planck-Gesellschaft, Carl-von-Linne-Weg 10, D-50829 Koln, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8670417" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/*immunology ; Gene Targeting ; Genetic Linkage ; Immunoglobulin G/blood ; Immunoglobulin M/blood/immunology ; Immunoglobulins/*blood ; Immunologic Deficiency Syndromes/enzymology/*immunology ; Lymphocyte Activation ; Lymphocyte Count ; Mice ; Protein Kinase C/deficiency/genetics/*physiology ; Protein Kinase C beta ; Protein-Tyrosine Kinases/genetics/metabolism ; Receptors, Antigen, B-Cell/immunology ; Signal Transduction ; T-Lymphocytes/immunology ; X Chromosome
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  • 94
    Publication Date: 1996-08-02
    Description: Proper regulation of chondrocyte differentiation is necessary for the morphogenesis of skeletal elements, yet little is known about the molecular regulation of this process. A chicken homolog of Indian hedgehog (Ihh), a member of the conserved Hedgehog family of secreted proteins that is expressed during bone formation, has now been isolated. Ihh has biological properties similar to those of Sonic hedgehog (Shh), including the ability to regulate the conserved targets Patched (Ptc) and Gli. Ihh is expressed in the prehypertrophic chondrocytes of cartilage elements, where it regulates the rate of hypertrophic differentiation. Misexpression of Ihh prevents proliferating chondrocytes from initiating the hypertrophic differentiation process. The direct target of Ihh signaling is the perichondrium, where Gli and Ptc flank the expression domain of Ihh. Ihh induces the expression of a second signal, parathyroid hormone-related protein (PTHrP), in the periarticular perichondrium. Analysis of PTHrP (-/-) mutant mice indicated that the PTHrP protein signals to its receptor in the prehypertrophic chondrocytes, thereby blocking hypertrophic differentiation. In vitro application of Hedgehog or PTHrP protein to normal or PTHrP (-/-) limb explants demonstrated that PTHrP mediates the effects of Ihh through the formation of a negative feedback loop that modulates the rate of chondrocyte differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vortkamp, A -- Lee, K -- Lanske, B -- Segre, G V -- Kronenberg, H M -- Tabin, C J -- DK47038/DK/NIDDK NIH HHS/ -- DK4723/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1996 Aug 2;273(5275):613-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of 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/8662546" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Bone Development ; Cartilage/*cytology/metabolism ; Cell Differentiation ; Cell Division ; Chick Embryo ; Cloning, Molecular ; Culture Techniques ; Extremities/embryology ; Feedback ; Gene Expression Regulation ; Growth Plate/*cytology/metabolism ; Hedgehog Proteins ; Mice ; Molecular Sequence Data ; Morphogenesis ; *Osteogenesis ; Parathyroid Hormone ; Parathyroid Hormone-Related Protein ; Phenotype ; Proteins/pharmacology/*physiology ; Receptor, Parathyroid Hormone, Type 1 ; Receptors, Parathyroid Hormone/physiology ; Signal Transduction ; *Trans-Activators
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  • 95
    Publication Date: 1996-10-11
    Description: To determine the function of the pS2 trefoil protein, which is normally expressed in the gastric mucosa, the mouse pS2 (mpS2) gene was inactivated. The antral and pyloric gastric mucosa of mpS2-null mice was dysfunctional and exhibited severe hyperplasia and dysplasia. All homozygous mutant mice developed antropyloric adenoma, and 30 percent developed multifocal intraepithelial or intramucosal carcinomas. The small intestine was characterized by enlarged villi and an abnormal infiltrate of lymphoid cells. These results indicate that mpS2 is essential for normal differentiation of the antral and pyloric gastric mucosa and may function as a gastric-specific tumor suppressor gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lefebvre, O -- Chenard, M P -- Masson, R -- Linares, J -- Dierich, A -- LeMeur, M -- Wendling, C -- Tomasetto, C -- Chambon, P -- Rio, M C -- New York, N.Y. -- Science. 1996 Oct 11;274(5285):259-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Genetique et de Biologie Moleculaire et Cellulaire, CNRS/INSERM/Universite Louis Pasteur/College de France, Communaute Urbaine de Strasbourg, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8824193" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoma/etiology/pathology ; Animals ; Base Sequence ; Cell Differentiation ; Cloning, Molecular ; Female ; Gastric Mucosa/cytology/*pathology ; Gene Targeting ; Genes, Tumor Suppressor ; Intestinal Mucosa/cytology/*pathology ; Male ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Neoplasm Proteins/genetics/*physiology ; Phenotype ; *Proteins ; Pyloric Antrum ; Stomach Neoplasms/*etiology/pathology ; Tumor Suppressor Proteins
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  • 96
    Publication Date: 1996-11-29
    Description: Transporter-facilitated uptake of serotonin (5-hydroxytryptamine or 5-HT) has been implicated in anxiety in humans and animal models and is the site of action of widely used uptake-inhibiting antidepressant and antianxiety drugs. Human 5-HT transporter (5-HTT) gene transcription is modulated by a common polymorphism in its upstream regulatory region. The short variant of the polymorphism reduces the transcriptional efficiency of the 5-HTT gene promoter, resulting in decreased 5-HTT expression and 5-HT uptake in lymphoblasts. Association studies in two independent samples totaling 505 individuals revealed that the 5-HTT polymorphism accounts for 3 to 4 percent of total variation and 7 to 9 percent of inherited variance in anxiety-related personality traits in individuals as well as sibships.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lesch, K P -- Bengel, D -- Heils, A -- Sabol, S Z -- Greenberg, B D -- Petri, S -- Benjamin, J -- Muller, C R -- Hamer, D H -- Murphy, D L -- New York, N.Y. -- Science. 1996 Nov 29;274(5292):1527-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychiatry, University of Wurzburg, Fuchsleinstrasse 15, 97080 Wurzburg, Germany. kplesch@rzbox.uni-wuerzburg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8929413" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Alleles ; Anxiety Disorders/*genetics ; Carrier Proteins/*genetics ; Cell Line ; Female ; Genetic Markers ; Genotype ; Humans ; Male ; Membrane Glycoproteins/*genetics ; *Membrane Transport Proteins ; Middle Aged ; *Nerve Tissue Proteins ; Neurotic Disorders/*genetics ; Nuclear Family ; Personality Tests ; Phenotype ; *Polymorphism, Genetic ; *Promoter Regions, Genetic ; Serotonin/*metabolism ; Serotonin Plasma Membrane Transport Proteins ; Transfection
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  • 97
    Publication Date: 1996-05-24
    Description: It is widely accepted that tumors are monoclonal in origin, arising from a mutation or series of mutations in a single cell and its descendants. The clonal origin of colonic adenomas and uninvolved intestinal mucosa from an XO/XY mosaic individual with familial adenomatous polyposis (FAP) was examined directly by in situ hybridization with Y chromosome probes. In this patient, the crypts of the small and large intestine were clonal, but at least 76 percent of the microadenomas were polyclonal in origin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Novelli, M R -- Williamson, J A -- Tomlinson, I P -- Elia, G -- Hodgson, S V -- Talbot, I C -- Bodmer, W F -- Wright, N A -- New York, N.Y. -- Science. 1996 May 24;272(5265):1187-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Genetics Laboratory, Imperial Cancer Research Fund (ICRF) Laboratories, London, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638166" target="_blank"〉PubMed〈/a〉
    Keywords: Adenomatous Polyposis Coli/*genetics/pathology ; Adult ; Clone Cells ; Colon/*pathology ; DNA Probes ; Genotype ; Humans ; Ileum/pathology ; In Situ Hybridization ; In Situ Hybridization, Fluorescence ; Intestinal Mucosa/*pathology ; Karyotyping ; Male ; *Mosaicism ; Phenotype ; Y Chromosome
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  • 98
    Publication Date: 1996-08-16
    Description: The plant hormone auxin regulates various developmental processes including root formation, vascular development, and gravitropism. Mutations within the AUX1 gene confer an auxin-resistant root growth phenotype and abolish root gravitropic curvature. Polypeptide sequence similarity to amino acid permeases suggests that AUX1 mediates the transport of an amino acid-like signaling molecule. Indole-3-acetic acid, the major form of auxin in higher plants, is structurally similar to tryptophan and is a likely substrate for the AUX1 gene product. The cloned AUX1 gene can restore the auxin-responsiveness of transgenic aux1 roots. Spatially, AUX1 is expressed in root apical tissues that regulate root gravitropic curvature.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bennett, M J -- Marchant, A -- Green, H G -- May, S T -- Ward, S P -- Millner, P A -- Walker, A R -- Schulz, B -- Feldmann, K A -- New York, N.Y. -- Science. 1996 Aug 16;273(5277):948-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, University of Warwick, Coventry, CV4 7AL, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8688077" target="_blank"〉PubMed〈/a〉
    Keywords: 2,4-Dichlorophenoxyacetic Acid/pharmacology ; Amino Acid Sequence ; Amino Acid Transport Systems ; Amino Acids/metabolism ; Arabidopsis/chemistry/*genetics/growth & development/metabolism ; *Arabidopsis Proteins ; Biological Transport ; Cloning, Molecular ; DNA, Bacterial/genetics ; *Genes, Plant ; Genetic Complementation Test ; *Gravitropism ; Indoleacetic Acids/metabolism/pharmacology ; Membrane Transport Proteins/chemistry ; Molecular Sequence Data ; Molecular Weight ; Mutation ; Plant Proteins/chemistry/*genetics/metabolism ; Plant Roots/*growth & development/metabolism ; Sequence Alignment ; Signal Transduction
    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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  • 99
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1996-10-11
    Description: Caveolae are specialized invaginated cell surface microdomains of undefined function. A cell-free system that reconstituted fission of caveolae from lung endothelial plasma membranes was developed. Addition of cytosol and the hydrolysis of guanosine triphosphate (GTP) induced caveolar fission. The budded caveolae were isolated as vesicles rich in caveolin and the sialoglycolipid GM1 but not glycosyl-phosphatidylinositol (GPI)-anchored proteins. These vesicles contained the molecular machinery for endocytosis and transcytosis. In permeabilized endothelial cells, GTP stimulated, whereas GTPgammaS prevented, caveolar budding and endocytosis of the cholera toxin B chain to endosomes. Thus, caveolae may bud to form discrete carrier vesicles that participate in membrane trafficking.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schnitzer, J E -- Oh, P -- McIntosh, D P -- HL43278/HL/NHLBI NIH HHS/ -- HL52766/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1996 Oct 11;274(5285):239-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Harvard Medical School, Beth Israel Hospital, Boston, MA 02215, USA. jschnitz@bih.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8824187" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Transport ; Cattle ; Caveolin 1 ; *Caveolins ; Cell Membrane/chemistry/*metabolism/ultrastructure ; Cell-Free System ; Centrifugation, Density Gradient ; Cholera Toxin/metabolism ; Endocytosis ; Endothelium, Vascular/cytology/metabolism ; Guanosine 5'-O-(3-Thiotriphosphate)/pharmacology ; Guanosine Triphosphate/*metabolism/pharmacology ; Hydrolysis ; Membrane Proteins/analysis/metabolism ; Rats
    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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  • 100
    Publication Date: 1996-06-21
    Description: Substantial functional reorganization takes place in the motor cortex of adult primates after a focal ischemic infarct, as might occur in stroke. A subtotal lesion confined to a small portion of the representation of one hand was previously shown to result in a further loss of hand territory in the adjacent, undamaged cortex of adult squirrel monkeys. In the present study, retraining of skilled hand use after similar infarcts resulted in prevention of the loss of hand territory adjacent to the infarct. In some instances, the hand representations expanded into regions formerly occupied by representations of the elbow and shoulder. Functional reorganization in the undamaged motor cortex was accompanied by behavioral recovery of skilled hand function. These results suggest that, after local damage to the motor cortex, rehabilitative training can shape subsequent reorganization in the adjacent intact cortex, and that the undamaged motor cortex may play an important role in motor recovery.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nudo, R J -- Wise, B M -- SiFuentes, F -- Milliken, G W -- NS27974/NS/NINDS NIH HHS/ -- NS30853/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1996 Jun 21;272(5269):1791-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology and Anatomy, University of Texas Health Science Center at Houston, 77030, USA. rnudo@nba19.med.uth.tmc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650578" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain Ischemia/physiopathology/rehabilitation ; Brain Mapping ; Cerebral Infarction/physiopathology/*rehabilitation ; Electric Stimulation ; Hand/innervation/*physiology ; Male ; Motor Cortex/*physiology ; *Motor Skills ; Neuronal Plasticity ; Random Allocation ; Saimiri
    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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