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  • American Association for the Advancement of Science (AAAS)  (26)
  • 1985-1989  (10)
  • 1980-1984  (16)
  • 1
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    Primary structure of the beta subunit of the DHP-sensitive calcium channel from skeletal muscle (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-09-08
    Description: Complementary DNAs for the beta subunit of the dihydropyridine-sensitive calcium channel of rabbit skeletal muscle were isolated on the basis of peptide sequences derived from the purified protein. The deduced primary structure is without homology to other known protein sequences and is consistent with the beta subunit being a peripheral membrane protein associated with the cytoplasmic aspect of the sarcolemma. The protein contains sites that might be expected to be preferentially phosphorylated by protein kinase C and guanosine 3',5'-monophosphate-dependent protein kinase. A messenger RNA for this protein appears to be expressed in brain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ruth, P -- Rohrkasten, A -- Biel, M -- Bosse, E -- Regulla, S -- Meyer, H E -- Flockerzi, V -- Hofmann, F -- New York, N.Y. -- Science. 1989 Sep 8;245(4922):1115-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut fur Physiologische Chemie, Medizinische Fakultat, Homburg/Saar, Federal Republic of Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2549640" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcium Channel Blockers/*metabolism/pharmacology ; Calcium Channels/drug effects/*metabolism ; Dihydropyridines/*metabolism/pharmacology ; Molecular Sequence Data ; Muscles/*analysis ; Phosphorylation ; Protein Conformation ; RNA, Messenger/isolation & purification ; Rabbits ; Receptors, Nicotinic/drug effects/*isolation & purification/metabolism
    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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    The Fc and not CD4 receptor mediates antibody enhancement of HIV infection in human cells (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-06-16
    Description: Antibodies that enhance human immunodeficiency virus (HIV) infectivity have been found in the blood of infected individuals and in infected or immunized animals. These findings raise serious concern for the development of a safe vaccine against acquired immunodeficiency syndrome. To address the in vivo relevance and mechanism of this phenomenon, antibody-dependent enhancement of HIV infectivity in peripheral blood macrophages, lymphocytes, and human fibroblastoid cells was studied. Neither Leu3a, a monoclonal antibody directed against the CD4 receptor, nor soluble recombinant CD4 even at high concentrations prevented this enhancement. The addition of monoclonal antibody to the Fc receptor III (anti-FcRIII), but not of antibodies that react with FcRI or FcRII, inhibited HIV type 1 and HIV type 2 enhancement in peripheral blood macrophages. Although enhancement of HIV infection in CD4+ lymphocytes could not be blocked by anti-FcRIII, it was inhibited by the addition of human immunoglobulin G aggregates. The results indicate that the FcRIII receptor on human macrophages and possibly another Fc receptor on human CD4+ lymphocytes mediate antibody-dependent enhancement of HIV infectivity and that this phenomenon proceeds through a mechanism independent of the CD4 protein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Homsy, J -- Meyer, M -- Tateno, M -- Clarkson, S -- Levy, J A -- AI-26471/AI/NIAID NIH HHS/ -- R01-AI-24499/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1989 Jun 16;244(4910):1357-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, School of Medicine, University of California, San Francisco 94143.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2786647" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*immunology ; Animals ; Antibodies, Monoclonal ; Antibody-Dependent Cell Cytotoxicity ; Guinea Pigs ; HIV Antibodies/biosynthesis/*immunology ; HIV-1/*immunology ; HIV-2/*immunology ; Humans ; In Vitro Techniques ; Pan troglodytes ; Receptors, Fc/*physiology ; Receptors, HIV ; Receptors, Virus/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Highly cooperative opening of calcium channels by inositol 1,4,5-trisphosphate (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-04-29
    Description: The kinetics of calcium release by inositol 1,4,5-trisphosphate (IP3) in permeabilized rat basophilic leukemia cells were studied to obtain insight into the molecular mechanism of action of this intracellular messenger of the phosphoinositide cascade. Calcium release from intracellular storage sites was monitored with fura-2, a fluorescent indicator. The dependence of the rate of calcium release on the concentration of added IP3 in the 4 to 40 nM range showed that channel opening requires the binding of at least three molecules of IP3. Channel opening occurred in the absence of added adenosine triphosphate, indicating that IP3 acts directly on the channel or on a protein that gates it. The channels were opened by IP3 in less than 4 seconds. The highly cooperative opening of calcium channels by nanomolar concentrations of IP3 enables cells to detect and amplify very small changes in the concentration of this messenger in response to hormonal, sensory, and growth control stimuli.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meyer, T -- Holowka, D -- Stryer, L -- AI22449/AI/NIAID NIH HHS/ -- GM24032/GM/NIGMS NIH HHS/ -- GM30387/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1988 Apr 29;240(4852):653-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Sherman Fairchild Center, Stanford University School of Medicine, CA 94305.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2452482" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Basophils ; Benzofurans ; Calcimycin/pharmacology ; Calcium/*metabolism ; Cell Membrane Permeability ; Cytoplasm/metabolism ; Fluorescent Dyes ; Fura-2 ; Inositol 1,4,5-Trisphosphate ; Inositol Phosphates/metabolism/*pharmacology ; Ion Channels/drug effects/*metabolism ; Kinetics ; Leukemia, Experimental/metabolism ; Rats ; Spectrometry, Fluorescence ; Sugar Phosphates/*pharmacology ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Effects of prenatal sex hormones on gender-related behavior (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-03-20
    Description: Gender identity depends largely on postnatal environmental influences, while sex-dimorphic behavior and temperamental sex differences appear to be modified by prenatal sex hormones. A role of the prenatal endocrine milieu in the development of erotic partner preference, as in hetero-, homo-, or bisexual orientation, or of cognitive sex differences has not been conclusively demonstrated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ehrhardt, A A -- Meyer-Bahlburg, H F -- New York, N.Y. -- Science. 1981 Mar 20;211(4488):1312-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209510" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adrenal Hyperplasia, Congenital/metabolism/psychology ; Adult ; Androgens/pharmacology ; Behavior/drug effects ; Child ; Cognition/drug effects ; Embryo, Mammalian/drug effects ; Estrogens/pharmacology ; Female ; *Gender Identity ; Gonadal Steroid Hormones/*pharmacology ; Humans ; *Identification (Psychology) ; Male ; Pregnancy ; Pregnancy Complications/drug therapy ; Progestins/pharmacology/therapeutic use ; Sexual Behavior/*drug effects
    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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    Eye dominance columns from an isogenic double-nasal frog eye (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-07-15
    Description: Removing the posterior (temporal) two-thirds of the Xenopus eye bud produces a remaining fragment, which becomes round and grows to a normal adult size eye. Electrophysiological and anatomical analyses showed that each of the two halves of this eye projected across the entire optic tectum in mirror image (double-nasal) fashion, and that fibers from each half-eye sorted out to form eye dominance stripes on the tectum. That both halves of the mirror-symmetric map were derived from only one animal, and from only one side of the head, rules out global markers such as right versus left and histocompatibility differences as causing the formation of these stripes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ide, C F -- Fraser, S E -- Meyer, R L -- NS16319/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1983 Jul 15;221(4607):293-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6857287" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Electrophysiology ; Eye/*innervation ; Optic Nerve/physiology ; Retina/physiology ; Superior Colliculi/physiology ; Vision, Ocular/*physiology ; Xenopus
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    Thermal insulating capabilities of outdoor clothing materials (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-02-05
    Description: A single heat transfer measurement technique was used to determine the thermal insulating capabilities of four materials used in outdoor clothing-goose down, wool, polyester, and polyolefin. It was found that all provide very similar degrees of insulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaufman, W C -- Bothe, D -- Meyer, S D -- New York, N.Y. -- Science. 1982 Feb 5;215(4533):690-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17842404" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
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  • 7
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    Origin of the cholecystokinin-containing fibers in the rat caudatoputamen (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-01-08
    Description: Large Amounts of cholecystokinin-octapeptide (CCK) are present in the rat caudatoputamen. The peptide occurs in axons and nerve endings but not in perikarya. The origin of CCK in the caudatoputamen was investigated with the use of immunocytochemistry and a radioimmunoassay specific for CCK. Although a small amount of CCK (approximately 30 percent) originates in the amygdaloid complex, the bulk of the peptide (approximately 70 percent) occurs in processes of neurons located ventral to the caudatoputamen, that is, the claustrum or the piriform cortex. The claustrum and piriform cortex receive inputs from various cortical areas and the olfactory system, respectively, and may process information and relay it to the caudatoputamen. Thus CCK may by the transmitter in the final common pathway linking various cortical areas and the olfactory system to the caudatoputamen.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meyer, D K -- Beinfeld, M C -- Oertel, W H -- Brownstein, M J -- New York, N.Y. -- Science. 1982 Jan 8;215(4529):187-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7053570" target="_blank"〉PubMed〈/a〉
    Keywords: Amygdala/cytology ; Animals ; Caudate Nucleus/cytology/*metabolism ; Cerebral Cortex/cytology ; Cholecystokinin/*metabolism ; Female ; Neural Pathways/cytology ; Putamen/cytology/*metabolism ; Rats
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    High-affinity choline transport in proteoliposomes derived from rat cortical synaptosomes (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-08-27
    Description: Functional high- and low-affinity choline transport processes from rat cortical plasma membranes were reconstituted in phosphatidylcholine bilayer liposomes. The high-affinity choline transporter demonstrated a pharmacological profile and ion dependency that were identical to those of intact synaptosomes. This preparation may be used to further characterize choline transport and, with appropriate supplementation, to investigate the release of acetylcholine in the absence of synaptic vesicles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meyer, E M -- Cooper, J R -- NS 09836/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Aug 27;217(4562):843-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7100928" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/metabolism ; Animals ; Biological Transport ; Cell Membrane/metabolism ; Chlorides/metabolism ; Choline/*metabolism ; Kinetics ; Lipid Bilayers/metabolism ; Liposomes/*metabolism ; Phosphatidylcholines/metabolism ; Rats ; Sodium/metabolism ; Synaptosomes/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Androgens alter the tuning of electroreceptors (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-08-13
    Description: Weakly electric fish possess electroreceptors that are tuned to their individual electric organ discharge frequencies. One genus, Sternopygus, displays both ontogenetic and seasonal shifts in these frequencies, possibly because of endocrine influences. Systemic treatment with androgens lowers the discharge frequencies in these animals. Concomitant with these changes in electric organ discharge frequencies are decreases in electroreceptor best frequencies; hence the close match between discharge frequency and receptor tuning is maintained. These findings indicate that the tuning of electroreceptors is dynamic and that it parallels natural shifts in electric organ discharge frequency.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meyer, J H -- Zakon, H H -- New York, N.Y. -- Science. 1982 Aug 13;217(4560):635-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17817533" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Tetrodotoxin blocks the formation of ocular dominance columns in goldfish (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-11-05
    Description: Optic fibers from both eyes were made to regenerate simultaneously into one tectum in goldfish. Autoradiography at various times later revealed that regenerating left and right fibers overlapped extensively for up to 4 weeks and subsequently segregated into eye dominance columns by 8 weeks. Continuous tetrodotoxin treatment of both eyes prevented the formation of columns for up to 13 weeks and was equally effective if begun at 6 weeks. When tetrodotoxin treatment was stopped after 11 weeks, columns subsequently formed in the next 3 weeks. Blockade of only one eye did prevent column formation at 8 weeks.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meyer, R L -- NS15381/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Nov 5;218(4572):589-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123262" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Functional Laterality ; Goldfish ; Nerve Regeneration/drug effects ; Neuronal Plasticity/*drug effects ; Tetrodotoxin/*pharmacology ; Visual Pathways/drug effects/*growth & development
    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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