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  • 1
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    Contraceptive technology. Panel wants to break R&D barrier (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    CRNF, a molluscan neurotrophic factor that interacts with the p75 neurotrophin receptor (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-11-29
    Description: A 13.1-kilodalton protein, cysteine-rich neurotrophic factor (CRNF), was purified from the mollusk Lymnaea stagnalis by use of a binding assay on the p75 neurotrophin receptor. CRNF bound to p75 with nanomolar affinity but was not similar in sequence to neurotrophins or any other known gene product. CRNF messenger RNA expression was highest in adult foot subepithelial cells; in the central nervous system, expression was regulated by lesion. The factor evoked neurite outgrowth and modulated calcium currents in pedal motor neurons. Thus, CRNF may be involved in target-derived trophic support for motor neurons and could represent the prototype of another family of p75 ligands.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fainzilber, M -- Smit, A B -- Syed, N I -- Wildering, W C -- Hermann -- van der Schors, R C -- Jimenez, C -- Li, K W -- van Minnen, J -- Bulloch, A G -- Ibanez, C F -- Geraerts, W P -- New York, N.Y. -- Science. 1996 Nov 29;274(5292):1540-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Neurobiology, Department of Neuroscience, Karolinska Institute, Berzelius Laboratories Building, Doktorsringen 12A, S-17177 Stockholm, Sweden. michael@cajal.mbb.ki.se〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8929417" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding, Competitive ; Calcium/metabolism ; Hemolymph/chemistry ; Humans ; Lymnaea/*chemistry ; Molecular Sequence Data ; Motor Neurons/ultrastructure ; Nerve Growth Factors/chemistry/genetics/isolation & ; purification/metabolism/*physiology ; Neurites/physiology ; RNA, Messenger/genetics/metabolism ; Receptor, Nerve Growth Factor ; Receptors, Nerve Growth Factor/*metabolism ; Recombinant Proteins/chemistry/isolation & purification/metabolism ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Estimating the age of the common ancestor of men from the ZFY intron (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    HIV-1 Langerhans' cell tropism associated with heterosexual transmission of HIV (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Hippocampal cell death (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    RAC regulation of actin polymerization and proliferation by a pathway distinct from Jun kinase (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Hot property: biologists who compute (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-06-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 1996 Jun 21;272(5269):1730-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8650562" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Biotechnology/manpower ; DNA/genetics ; Databases, Factual ; Drug Industry/*manpower ; Humans ; Information Science/education/*manpower ; Molecular Biology/*manpower ; Universities
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    U1-mediated exon definition interactions between AT-AC and GT-AG introns (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-11-08
    Description: A minor class of metazoan introns has well-conserved splice sites with 5'-AU-AC-3' boundaries, compared to the 5'-GU-AG-3' boundaries and degenerate splice sites of conventional introns. Splicing of the AT-AC intron 2 of a sodium channel (SCN4A) precursor messenger RNA in vitro did not require inhibition of conventional splicing and required adenosine triphosphate, magnesium, and U12 small nuclear RNA (snRNA). When exon 3 was followed by the 5' splice site from the downstream conventional intron, splicing of intron 2 was greatly stimulated. This effect was U1 snRNA-dependent, unlike the basal AT-AC splicing reaction. Therefore, U1-mediated exon definition interactions can coordinate the activities of major and minor spliceosomes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, Q -- Krainer, A R -- GM42699/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Nov 8;274(5289):1005-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, Post Office Box 100, Cold Spring Harbor, NY 11724-2208, USA. krainer@cshl.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8875927" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/pharmacology ; Animals ; *Exons ; HeLa Cells ; Humans ; *Introns ; Magnesium/pharmacology ; *RNA Splicing ; RNA, Small Nuclear/*metabolism ; Ribonucleoprotein, U1 Small Nuclear/metabolism ; Ribonucleoproteins, Small Nuclear/metabolism ; Sodium Channels/*genetics ; Spliceosomes/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Friedreich's ataxia: autosomal recessive disease caused by an intronic GAA triplet repeat expansion (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    'Natural' cancer prevention trial halted (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-01-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peterson, K -- New York, N.Y. -- Science. 1996 Jan 26;271(5248):441.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8560251" target="_blank"〉PubMed〈/a〉
    Keywords: Anticarcinogenic Agents/*therapeutic use ; Asbestos/adverse effects ; Carotenoids/adverse effects/*therapeutic use ; *Controlled Clinical Trials as Topic ; Heart Diseases/prevention & control ; Humans ; Lung Neoplasms/etiology/*prevention & control ; Neoplasms/*prevention & control ; Smoking/*adverse effects ; beta Carotene
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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