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  • Animals  (934)
  • 1980-1984  (934)
  • 1925-1929
  • 1982  (443)
  • 1981  (491)
  • 1925
  • 101
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    Differentiation of respiratory and abortigenic isolates of equine herpesvirus 1 by restriction endonucleases (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-10-30
    Description: Viruses classified by immunologic criteria as equine herpesvirus 1 cause respiratory disease and abortion in horses. Restriction endonuclease analyses of the DNA's of viruses from animals with respiratory disease and from aborted fetuses show that the patterns for respiratory viruses, while similar to each other, are entirely different from the patterns for fetal viruses. It is therefore proposed that the DNA restriction endonuclease patterns of fetal and respiratory viruses analyzed in this study be designated as prototypic of equine herpesvirus 1 and 4, respectively.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Studdert, M J -- Simpson, T -- Roizman, B -- CA 08494/CA/NCI NIH HHS/ -- CA 09241/CA/NCI NIH HHS/ -- CA 19264/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Oct 30;214(4520):562-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6270790" target="_blank"〉PubMed〈/a〉
    Keywords: Abortion, Veterinary/*microbiology ; Animals ; DNA Restriction Enzymes ; DNA, Viral/genetics ; Female ; Fetus/microbiology ; Herpesviridae/*genetics ; Herpesvirus 1, Equid/*genetics ; Horse Diseases/*microbiology ; Horses ; Pregnancy
    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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  • 102
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    Studies in histocompatibility (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Snell, G D -- New York, N.Y. -- Science. 1981 Jul 10;213(4504):172-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7017931" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Antigens, Neoplasm/genetics ; Antigens, Viral/genetics ; Antigens, Viral, Tumor ; Female ; Genetic Linkage ; Genotype ; H-2 Antigens/genetics ; Heterozygote ; *Major Histocompatibility Complex ; Male ; Mice ; Mice, Inbred Strains ; Neoplasms, Experimental/genetics/*immunology ; Pedigree ; Rats ; Species Specificity
    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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  • 103
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    Immunization of Baboons with Schistosoma mansoni Cercariae attenuated by gamma irradiation (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-06-26
    Description: Studies on the efficacy of a vaccine against schistosomiasis in young baboons (Papio anubis) disclosed that immunization with Schistosoma mansoni cercariae attenuated by gamma irradiation induced significant protection against subsequent infection with normal, viable S. mansoni cercariae. Such immunization resulted in reduced worm burdens (70 percent) and egg excretion rates (82 percent). These results support immunization as a potential method for schistosomiasis control.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stek M, F r -- Minard, P -- Dean, D A -- Hall, J E -- New York, N.Y. -- Science. 1981 Jun 26;212(4502):1518-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233238" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; *Immunization ; Mice ; Mice, Inbred Strains ; Papio ; Schistosoma mansoni/immunology/*radiation effects ; Schistosomiasis/prevention & control
    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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  • 104
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    Axonal transport: each major rate component reflects the movement of distinct macromolecular complexes (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-10-09
    Description: The proteins of the three major rate components of axonal transport in guinea pig retinal ganglion cells were analyzed by one- and two-dimensional gel electrophoresis. Each rate component consisted of a different set of proteins that remained associated with each other during transport. This suggests that each rate component represents a distinct macromolecular complex and that these complexes may be definable organelles such as microtubules, microfilaments, and smooth endoplasmic reticulum. Thus, the transport of radiolabeled proteins in the axon reflects the movement of complete subcellular rather than the movement of individual proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tytell, M -- Black, M M -- Garner, J A -- Lasek, R J -- NS 05892-02/NS/NINDS NIH HHS/ -- NS 13658-03/NS/NINDS NIH HHS/ -- NS 14900-02/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Oct 9;214(4517):179-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6169148" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Axonal Transport ; Axons/*metabolism ; Cytoskeleton/metabolism ; Electrophoresis, Polyacrylamide Gel ; Endoplasmic Reticulum/metabolism ; Guinea Pigs ; Hypoglossal Nerve/metabolism ; Microtubules/metabolism ; Nerve Tissue Proteins/*metabolism ; Retina/metabolism ; Time Factors
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 105
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    Falciparum malaria-infected erythrocytes specifically bind to cultured human endothelial cells (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-31
    Description: Erythrocytes infected with the late stages of the human malarial parasite Plasmodium falciparum became attached to a subpopulation of cultured human endothelial cells by knoblike protrusions on the surface of the infected erythrocytes. Infected erythrocytes did not bind to cultured fibroblasts; uninfected erythrocytes did not bind to either endothelial cells or fibroblasts. The results suggest a specific receptor-ligand interaction between endothelial cells and a component, components, in the knobs of the infected erythrocytes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Udeinya, I J -- Schmidt, J A -- Aikawa, M -- Miller, L H -- Green, I -- New York, N.Y. -- Science. 1981 Jul 31;213(4507):555-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7017935" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aotus trivirgatus ; Cells, Cultured ; Endothelium/microbiology ; Erythrocytes/*microbiology/ultrastructure ; Female ; Humans ; Microscopy, Electron ; Plasmodium falciparum/*pathogenicity ; Pregnancy ; Umbilical Veins
    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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  • 106
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    Bee venom enhances guanylate cyclase activity (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-17
    Description: Bee venom and phospholipase A2 extracted from bee venom enhanced guanylate cyclase (E.C. 4.6.1.2) activity two- to threefold in rat liver, lung, heart, kidney, ileum, and cerebellum. Dose-response relationships revealed that bee venom at concentrations as low as 1 microgram per milliliter and phospholipase A2 at 1 microunit per milliliter caused a maximal enhancement of guanylate cyclase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vesely, D L -- New York, N.Y. -- Science. 1981 Jul 17;213(4505):359-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6113689" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bee Venoms/*pharmacology ; Dose-Response Relationship, Drug ; Enzyme Activation ; Guanylate Cyclase/*metabolism ; Kinetics ; Organ Specificity ; Phospholipases/*pharmacology ; Phospholipases A/*pharmacology ; Phospholipases A2 ; 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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  • 107
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    Biopterin cofactor biosynthesis: independent regulation of GTP cyclohydrolase in adrenal medulla and cortex (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-17
    Description: Guanosine triphosphate cyclohydrolase, the enzyme that is apparently rate-limiting in biopterin biosynthesis, is increased in adrenal cortex and medulla of rats treated with insulin or reserpine. Denervation and hypophysectomy block the increase in medullary and cortical enzyme activity, respectively, whereas cycloheximide presents the increase in both tissues. These results provide evidence for induction and regulation of guanosine triphosphate cyclohydrolase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Viveros, O H -- Lee, C L -- Abou-Donia, M M -- Nixon, J C -- Nichol, C A -- New York, N.Y. -- Science. 1981 Jul 17;213(4505):349-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7017928" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenal Cortex/drug effects/*enzymology ; Adrenal Glands/innervation ; Adrenal Medulla/drug effects/*enzymology ; Aminohydrolases/*metabolism ; Animals ; Biopterin/*biosynthesis ; Cycloheximide/pharmacology ; Denervation ; GTP Cyclohydrolase/*metabolism ; Hypophysectomy ; Insulin/pharmacology ; Kinetics ; Male ; Organ Specificity ; Pteridines/*biosynthesis ; Rats ; Reserpine/pharmacology
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  • 108
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    Angiotensin II binding sites in rat brain (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-12-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉van Houten, M -- Posner, B I -- New York, N.Y. -- Science. 1981 Dec 18;214(4527):1376.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6274018" target="_blank"〉PubMed〈/a〉
    Keywords: Angiotensin II/metabolism ; Animals ; Brain/metabolism ; Rats ; Receptors, Angiotensin/*metabolism ; Receptors, Cell Surface/*metabolism
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 109
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    A diversion of the quest for truth (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-03-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wade, N -- New York, N.Y. -- Science. 1981 Mar 6;211(4486):1022-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7466374" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Aotus trivirgatus ; *Cebidae ; *Cell Line ; *Ethics ; HeLa Cells ; Hodgkin Disease/*pathology ; Humans ; Karyotyping ; Research/*standards
    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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  • 110
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    Vitellogenesis and the vitellogenin gene family (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-04-17
    Description: Vitellogenin is synthesized under estrogen control in the liver, extensively modified, transported to the ovary, and there processed to the yolk proteins lipovitellin and phosvitin. In the frog Xenopus laevis there are at least four distinct but related vitellogenin genes. The two genes A1 and A2 have a 95 percent sequence homology in their messenger RNA coding regions, and contain 33 introns that interrupt the coding region (exons) at homologous positions. Sequences and lengths of analogous introns differ, and many introns contain repetitive DNA elements. The introns in these two genes that have apparently arisen by duplication have diverged extensively by events that include deletions, insertions, and probably duplications. Rapid evolutionary change involving rearrangements and the presence of repeated DNA suggests that the bulk of the sequences within introns may not have any specific function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wahli, W -- Dawid, I B -- Ryffel, G U -- Weber, R -- New York, N.Y. -- Science. 1981 Apr 17;212(4492):298-304.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209528" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cloning, Molecular ; DNA/genetics ; Estrogens/physiology ; Female ; *Genes ; Lipoproteins/*genetics ; Liver/secretion ; Male ; Oocytes/metabolism ; RNA, Messenger/metabolism ; Receptors, Estrogen/metabolism ; Repetitive Sequences, Nucleic Acid ; Vitellogenins/biosynthesis/*genetics ; Xenopus laevis/*genetics/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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  • 111
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    Mouse pox threat (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-01-30
    Description: A News and Comment Briefing ("OSHA backs away from strict lab rules," 28 Nov. 1980, p. 992) incorrectly quoted a National Research Council report on safe handling of laboratory chemicals as saying, "For most laboratory environments, ... regular monitoring of the airborne concentrations of a variety of different toxic materials is both unjustified and unjust." The report actually said it was "unjustified and impractical."〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wallace, G D -- New York, N.Y. -- Science. 1981 Jan 30;211(4481):438.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6256854" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Laboratory/*microbiology ; Disease Outbreaks/*veterinary ; Ectromelia virus ; Ectromelia, Infectious/*epidemiology ; Mice ; Mice, Inbred Strains ; Poxviridae Infections/*epidemiology ; Rodent Diseases/epidemiology ; United States
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 112
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    Associative Learning in Aplysia: evidence for conditioned fear in an invertebrate (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-01-30
    Description: Aversive classical conditioning of Aplysia californica, a gastropod mollusk suited for neurobiological study, produces a learned reaction to the chemosensory conditioned stimulus that is expressed as a marked facilitation of four defensive responses: two graded reflexes (head and siphon withdrawal), an all-or-none fixed act (inking), and a complex fixed action pattern (escape locomotion). In addition, the conditioned stimulus produces a concomitant depression of at least one appetitive response, feeding. These extensive and selective actions of the conditioned stimulus in Aplysia resemble the actions of conditioned fear stimuli in higher mammals and suggest that the functional equivalent of fear occurs in invertebrates and thus may be an adaptive mechanism that is widespread in the animal kingdom.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walters, E T -- Carew, T J -- Kandel, E R -- 5K02MH0081/MH/NIMH NIH HHS/ -- 5K05MH18558/MH/NIMH NIH HHS/ -- 5T32MH1574/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1981 Jan 30;211(4481):504-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7192881" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aplysia/*physiology ; Association Learning/*physiology ; Avoidance Learning/physiology ; Behavior, Animal/physiology ; Conditioning (Psychology)/physiology ; Defense Mechanisms ; Fear/*physiology ; Humans ; Learning/*physiology
    Print ISSN: 0036-8075
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  • 113
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    Chemical impurity produces extra compound eyes and heads in crickets (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-04-03
    Description: A chemical impurity isolated from commercially purchased acridine causes cricket embryos to develop extra compound eyes, branched antennae, extra antennae, and extra heads. Purified acridine does not produce similar duplications of cricket heads or head structures nor do the substituted acridines proflavine, acriflavine, or acridine orange. A dose-response relation exists such that the number and severity of abnormalities increase with increasing concentration of the teratogen.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walton, B T -- New York, N.Y. -- Science. 1981 Apr 3;212(4490):51-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6782672" target="_blank"〉PubMed〈/a〉
    Keywords: Abnormalities, Multiple/chemically induced ; Acridines/*isolation & purification/pharmacology ; Animals ; Dose-Response Relationship, Drug ; Drug Contamination ; Embryo, Nonmammalian/drug effects ; Eye Abnormalities ; Head/abnormalities ; Orthoptera/*drug effects ; *Teratogens
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 114
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    Wavelength-dependent enhancement in brain and behavior (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-02-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wasserman, G S -- New York, N.Y. -- Science. 1981 Feb 13;211(4483):732-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6779380" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/physiology ; Color Perception/*physiology ; Haplorhini/*physiology ; Retina/*physiology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 115
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    Hormonal requirements for growth of arterial smooth muscle cells in vitro: and endocrine approach to atherosclerosis (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-15
    Description: In this study the hormonal requirements for the growth of arterial smooth muscle cells in vitro were determined. A serum-free, biochemically defined medium, supplemented with the relevant hormones, permitted proliferation and propagation of normal diploid mammalian arterial smooth muscle cells. Serum-free, hormone-supplemented cultures spontaneously formed atherosclerotic plaque-like nodules. Thus atherosclerosis may be mediated by a complex endocrine system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weinstein, R -- Stemerman, M B -- Maciag, T -- AM 07026/AM/NIADDK NIH HHS/ -- HL 06197/HL/NHLBI NIH HHS/ -- HL 07374/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1981 May 15;212(4496):818-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7013068" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aorta, Abdominal/cytology ; Cell Division/drug effects ; Cells, Cultured ; Culture Media ; Growth Substances/pharmacology ; Hormones/*pharmacology ; Insulin/pharmacology ; Muscle, Smooth, Vascular/*cytology ; Rats ; Transferrin/pharmacology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 116
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    Carcinogen testing: current problems and new approaches (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-10-23
    Description: The classic procedures for testing potential carcinogens in animals have basically not changed in the past 50 years. Considerable knowledge of the mechanisms of carcinogenesis has accrued in the last 20 years, particularly concepts on the metabolic activation of chemicals to reactive electrophilic compounds that can interact with nucleophilic including DNA. These developments, in turn, have yielded a framework for integrating into carcinogen testing the determination of genetic effects of chemicals. A systematic decision point approach to carcinogen testing has been developed which entails a sequential decision-making process as specific tests are performed and evaluated prior to initiation of higher order, more complex tests. Compared to conventional bioassays in rodents, this approach provides knowledge based on mechanisms of carcinogenesis, yields a substantial amount of data at minimal cost, and forms a solid base for eventual heath risk assessment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weisburger, J H -- Williams, G M -- New York, N.Y. -- Science. 1981 Oct 23;214(4519):401-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7291981" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Assay ; *Carcinogens ; Disease Models, Animal ; *Drug Evaluation, Preclinical ; Mutagenicity Tests ; Mutagens ; Neoplasms, Experimental/*etiology ; Research Design
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  • 117
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    Receptor for albumin on the liver cell surface may mediate uptake of fatty acids and other albumin-bound substances (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-03-06
    Description: Kinetic analysis of the uptake of carbon-14-labeled oleate in a single-pass perfusion of rat liver and saturable and specific binding of iodine-125-labeled albumin to hepatocytes in suspension suggest the existence of a receptor for albumin on the liver cell surface. The putative receptor appears to mediate uptake of albumin-bound fatty acids by the cell and may account for the efficient hepatic extraction of many other substances tightly bound to albumin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weisiger, R -- Gollan, J -- Ockner, R -- AM-07007/AM/NIADDK NIH HHS/ -- AM-13328/AM/NIADDK NIH HHS/ -- AM-21899/AM/NIADDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 Mar 6;211(4486):1048-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6258226" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Transport ; Fatty Acids/*metabolism ; Female ; Kinetics ; Liver/*metabolism ; Oleic Acids/metabolism ; Protein Binding ; Rats ; Receptors, Albumin ; Receptors, Cell Surface/*metabolism ; Serum Albumin/*metabolism
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  • 118
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    Novel peptide neuronal system in rat brain and pituitary (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-12-11
    Description: Immunohistofluorescence studies of the rat central nervous system with antibodies to Phe-Met-Arg-Phe-NH2 (molluskan cardioexcitatory peptide) revealed a widespread neuronal system in the brain, spinal cord, and posterior pituitary. Immunoreactive axons and cell bodies were mainly located in cortical, limbic, and hypothalamic areas. Immunostaining of serial sections of the brain and pituitary showed that the Phe-Met-Arg-Phe-NH2 immunoreactive neurons were different from neurons labeled by antibodies to either Met-enkephalin or the putative Met-enkephalin precursor Tyr-Gly-Gly-Phe-Met-Arg-Phe, which is structurally related to Phe-Met-Arg-Phe-NH2. Control staining by antiserum absorption and radioimmunoassay indicated that the antibodies that caused the specific immunofluorescence recognized peptides with an amidated Arg-Phe sequence at the carboxyl terminus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weber, E -- Evans, C J -- Samuelsson, S J -- Barchas, J D -- DA 01207/DA/NIDA NIH HHS/ -- MH 23861/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1981 Dec 11;214(4526):1248-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7029714" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/analysis ; *Brain Chemistry ; FMRFamide ; Fluorescent Antibody Technique ; Nerve Tissue Proteins/*analysis ; Neurons/*analysis ; Organ Specificity ; Pituitary Gland/*analysis ; Radioimmunoassay ; Rats ; Spinal Cord/*analysis
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    Intrinsic birefringence signal preceding the onset of contraction in heart muscle (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-08-07
    Description: An intrinsic birefringence signal with two components occurring before sarcomere shortening was measured in mammalian cardiac muscle. The second component was sensitive to the inotropic state of the muscle as affected by external calcium concentration and epinephrine but not by changes of resting length. The second component was absent in frog heart. These results suggest that the second component of the birefringence signal reflects the activity of the sarcoplasmic reticulum related to excitation-contraction coupling processes occurring prior to onset of contraction in mammalian cardiac muscle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weiss, R -- Morad, M -- New York, N.Y. -- Science. 1981 Aug 7;213(4508):663-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7256266" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Birefringence ; Calcium/*physiology ; Cats ; Guinea Pigs ; Heart/*physiology ; Intracellular Membranes/physiology ; *Myocardial Contraction ; Rats ; Sarcoplasmic Reticulum/*physiology ; Time Factors
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    Tumor cell killing by phorbol ester--differentiated human leukemia cells (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-08-07
    Description: The tumor promoter 12-O-tetradecanoyl-phorbol-13-acetate causes differentiation of cells of the human leukemia cell line HL60 to nondividing macrophage-like cells. These differentiated cells are cytotoxic for tumor cells (including parent, untreated HL60 cells) in vitro. Agents that induce this desirable differentiation to nondividing, antitumor effector cells may be useful in the experimental treatment of leukemia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weinberg, J B -- 27070-02/PHS HHS/ -- New York, N.Y. -- Science. 1981 Aug 7;213(4508):655-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7196085" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation/drug effects ; Cell Line ; *Cytotoxicity, Immunologic ; Humans ; Immunity, Cellular ; Leukemia, Experimental/immunology/*pathology ; Macrophages/cytology/*immunology ; Phorbols/*pharmacology ; Tetradecanoylphorbol Acetate/*pharmacology
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    Prenatal exposure to ethanol alters the organization of hippocampal mossy fibers in rats (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-02-27
    Description: Rats exposed to ethanol throughout their gestation were found to have abnormally distributed mossy fibers in temporal regions of the hippocampus. This demonstrates that prenatal exposure to ethanol causes alterations in neuronal circuitry that persist to maturity. Such defects may play a role in the mental retardation often observed in children with fetal alcohol syndrome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉West, J R -- Hodges, C A -- Black, A C Jr -- AA-03884/AA/NIAAA NIH HHS/ -- New York, N.Y. -- Science. 1981 Feb 27;211(4485):957-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7466371" target="_blank"〉PubMed〈/a〉
    Keywords: Abnormalities, Drug-Induced/*etiology ; Animals ; Ethanol/*pharmacology ; Female ; Hippocampus/abnormalities/drug effects/*embryology ; Pregnancy ; Pregnancy, Animal/*drug effects ; Rats
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    Ethanol tolerance in the rat is learned (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-07-31
    Description: Rats were trained to walk on a treadmill to avoid foot shock. The animals developed tolerance for ethanol if given subsequent practice while ethanol intoxicated. Rats given equivalent doses of ethanol after practice did not develop tolerance, nor did saline-treated controls. These results challenge the hypothesis that mere repeated doses of ethanol are sufficient to induce tolerance. It seems that tolerance does not develop unless the response used to measure tolerance is performed while the subject is intoxicated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wenger, J R -- Tiffany, T M -- Bombardier, C -- Nicholls, K -- Woods, S C -- 03504/PHS HHS/ -- AA 04658/AA/NIAAA NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 31;213(4507):575-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244656" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avoidance Learning/*drug effects ; Dose-Response Relationship, Drug ; Drug Tolerance ; Ethanol/blood/*pharmacology ; Rats
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    Endogenous late positive component of the evoked potential in cats corresponding to P300 in humans (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-02-06
    Description: A long-latency component of the averaged evoked potential recorded from cats was present only when the evoking stimulus was relevant to the task. The amplitude of this component varied inversely with stimulus probability and was independent of stimulus modality.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilder, M B -- Farley, G R -- Starr, A -- NS 11876-06/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Feb 6;211(4482):605-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7455702" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avoidance Learning/physiology ; Brain/*physiology ; Cats ; Conditioning, Classical ; *Evoked Potentials ; Habituation, Psychophysiologic ; *Perception/physiology
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    Hindbrain GABA receptors influence parasympathetic outflow to the stomach (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-10-09
    Description: Blockade of gamma-aminobutyric acid receptor function by direct microinjection of bicuculline into the nucleus ambiguous in cats produced a marked increase in gastric motility which was mediated by the vagus nerve. This effect was reversed by muscimol. These data indicate that the nucleus ambiguous may be an important brain site influencing gastric function and that the neurotransmitter controlling parasympathetic overflow from this nucleus to the stomach is gamma-aminobutyric acid.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Williford, D J -- Ormsbee, H S 3rd -- Norman, W -- Harmon, J W -- Garvey, T Q 3rd -- DiMicco, J A -- Gillis, R A -- New York, N.Y. -- Science. 1981 Oct 9;214(4517):193-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6269182" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bicuculline/pharmacology ; Cats ; Gastrointestinal Motility/drug effects ; Medulla Oblongata/*physiology ; Muscimol/pharmacology ; Muscle Contraction/drug effects ; Muscle, Smooth/physiology ; Receptors, Cell Surface/*physiology ; Receptors, GABA-A ; Receptors, Neurotransmitter/*physiology ; Stomach/*innervation/physiology ; gamma-Aminobutyric Acid/*physiology
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    The hormonal control of sexual development (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-03-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, J D -- George, F W -- Griffin, J E -- AM03892/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Mar 20;211(4488):1278-84.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7010602" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Mullerian Hormone ; Estradiol/metabolism/*physiology ; Female ; *Glycoproteins ; Gonadotropins/physiology ; *Growth Inhibitors ; Humans ; Male ; Morphogenesis ; Mullerian Ducts ; Ovary/embryology ; Rabbits ; Receptors, Androgen/metabolism ; *Sex Differentiation ; Testicular Hormones/*physiology ; Testis/embryology/secretion ; Testosterone/metabolism/*physiology ; Time Factors ; Urogenital System/embryology ; Wolffian Ducts
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    Pigeons with a deficient sun compass use the magnetic compass (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-10-16
    Description: Homing pigeons that had never seen the sun before noon could not use the sun compass in the morning; nevertheless they were homeward oriented. When such birds carried magnets, however, they were disoriented, suggesting they were using a magnetic compass. These findings indicate that the magnetic compass is available to pigeons whether or not the sun compass has been established and that the magnetic compass is apparently the first source of compass information.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wiltschko, R -- Nohr, D -- Wiltschko, W -- New York, N.Y. -- Science. 1981 Oct 16;214(4518):343-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7280697" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/*physiology ; Columbidae/*physiology ; Magnetics ; Orientation/*physiology ; Sunlight
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    Thyroidectomy increases rat hepatic ferritin iron (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Winkelmann, J C -- Mariash, C N -- Towle, H C -- Oppenheimer, J H -- AM00800/AM/NIADDK NIH HHS/ -- AM19812/AM/NIADDK NIH HHS/ -- AM26919/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 31;213(4507):569-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6166047" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Ferritins/*metabolism ; Hypothyroidism/metabolism ; Iron/*metabolism ; Liver/*metabolism ; Molecular Weight ; Orotic Acid/metabolism ; Polyribosomes/metabolism ; RNA/genetics ; Rats ; *Thyroidectomy
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    Genetically determined deficiency of the third component of complement in the dog (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-06-05
    Description: A genetically determined deficiency of the third component of complement (C3) has been identified in a colony of Brittany spaniels. Immunochemical methods show no detectable C3 in the serum of the affected dogs, and there is no evidence of an inhibitor of C3 in the serum. The C3 deficiency appears to be transmitted as an autosomal recessive trait.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Winkelstein, J A -- Cork, L C -- Griffin, D E -- Griffin, J W -- Adams, R J -- Price, D L -- AI-11637/AI/NIAID NIH HHS/ -- NS-10580/NS/NINDS NIH HHS/ -- RR-00130/RR/NCRR NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 Jun 5;212(4499):1169-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233211" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Complement C3/deficiency/*genetics ; Dog Diseases/genetics ; Dogs ; Female ; Genes, Recessive ; Heterozygote Detection ; Homozygote ; Male ; Muscular Atrophy/genetics/veterinary ; Pedigree
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    Evaluation of nitrate synthesis by intestinal microorganisms in vivo (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-07-24
    Description: The nitrate balance of germfree and conventional rats was assessed to determine whether the intestinal flora produces nitrate in vivo. The results indicate that there can be excess nitrate in the urine of germfree as well as conventional rats. This nitrate is apparently of host origin, and the presence of intestinal flora decreases the output of nitrate in urine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Witter, J P -- Gatley, S J -- Balish, E -- New York, N.Y. -- Science. 1981 Jul 24;213(4506):449-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244641" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Germ-Free Life ; Glucose/metabolism ; Intestines/*microbiology ; Nitrates/*metabolism ; Oxidation-Reduction ; Rats
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    Intestinal M cells: a pathway for entry of reovirus into the host (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-04-24
    Description: Thirty minutes after inoculation of reovirus type 1 into the intestinal lumen of the mouse, viruses were found adhering to the surface of intestinal M cells but not other epithelial cells. Within 1 hour, viruses were seen in the M cell cytoplasm and were associated with mononuclear cells in the intercellular space adjacent to the M cell. These findings suggest that M cells are the site where reovirus penetrates the intestinal epithelium.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wolf, J L -- Rubin, D H -- Finberg, R -- Kauffman, R S -- Sharpe, A H -- Trier, J S -- Fields, B N -- AI 13178/AI/NIAID NIH HHS/ -- AM 07121/AM/NIADDK NIH HHS/ -- AM 17537/AM/NIADDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 Apr 24;212(4493):471-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6259737" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Suckling/microbiology ; Endocytosis ; Extracellular Space/microbiology ; Intestinal Mucosa/cytology/*microbiology ; Mice ; Peyer's Patches/microbiology ; Receptors, Virus/metabolism ; Reoviridae/*physiology ; Reoviridae Infections/*pathology
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    Gene for neuraminidase activity on mouse chromosome 17 near h-2: pleiotropic effects on multiple hydrolases (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-04-03
    Description: The low activity of liver neuraminidase that is characteristic of mouse strain SM/J is inherited as a single gene on chromosome 17, near the major histocompatibility complex. This gene, neuraminidase-1 (Neu-1), is represented by the low activity allele Neu-1s in SM/J and the high activity allele Neu-1b in C57BL/6J and most other strains. Previously described variations in the posttranslational processing of acid phosphatase, alpha-mannosidase, arylsulfatase-B, and alpha-glucosidase are attributed to pleiotropic effects of this gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Womack, J E -- Yan, D L -- Potier, M -- New York, N.Y. -- Science. 1981 Apr 3;212(4490):63-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209520" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Chromosome Mapping ; Female ; H-2 Antigens/genetics ; Hydrolases/*metabolism ; Liver/enzymology ; Major Histocompatibility Complex ; Male ; Mice ; Mice, Inbred Strains/*genetics/metabolism ; Neuraminidase/*genetics ; Protein Precursors/*metabolism ; Recombination, Genetic ; Sialic Acids/metabolism
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    Fermentation in the rumen and human large intestine (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-09-25
    Description: Fermentation of food by the microbial community of the rumen is essential for the maintenance and growth of ruminants. The microbial ecosystem and its interaction with the host are described, along with recent attempts to manipulate the composition and activity of the microbial community by adding antibiotics and other chemicals to ruminant diets. A similar microbial community and fermentation occur in the large intestine or cecum of most nonruminant animals including the large intestine of humans. The microbial ecosystems of the rumen and human large intestine are compared.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wolin, M J -- New York, N.Y. -- Science. 1981 Sep 25;213(4515):1463-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7280665" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carbohydrate Metabolism ; Cattle ; Fatty Acids/metabolism ; Fermentation ; Humans ; Intestine, Large/microbiology/*physiology ; Methane/metabolism ; Rumen/microbiology/*physiology ; Water-Electrolyte Balance
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    Resource partitioning during reproduction in the Norway rat (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-01-02
    Description: Rat pups nursed by pregnant dams grow as fast as pups reared by dams that are not pregnant. Moreover, litters that were in utero during a lactation are as numerous at birth and grow as fast as pups developing in a nonlactating, pregnant mother. These litters continue to grow as fast as pups born to nonlactating dams whether or not the first litter remains after the birth of the second litter. When pregnant and lactating dams have a restricted food supply, some dams are capable of extending the duration of their pregnancies by over 2 weeks past that of nonlactating, pregnant dams. This facultative prolongation of pregnancy apparently allows females to carry normal litters to term.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Woodside, B -- Wilson, R -- Chee, P -- Leon, M -- New York, N.Y. -- Science. 1981 Jan 2;211(4477):76-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7444451" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/*physiology ; Energy Intake ; Energy Metabolism ; Female ; *Lactation ; Litter Size ; Pregnancy ; *Pregnancy, Animal ; Rats/*physiology
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    Three distinct genes in human DNA related to the transforming genes of mammalian sarcoma retroviruses (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-07-10
    Description: Southern blot hybridization was used to identify human and other vertebrate DNA sequences that were homologous to cloned DNA fragments containing the oncogenic nucleic acid sequences of three different type C mammalian retroviruses (simian sarcoma virus, the Snyder-Theilen strain of feline sarcoma virus, and the Harvey strain of murine sarcoma virus). Each onc gene counterpart has a single genetic locus, which probably contains non-onc intervening sequences. The human DNA sequences may represent genes important to cell growth or cell differentiation, or both. Their identification and isolation may allow elucidation of their role in these processes and in neoplasias.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wong-Staal, F -- Dalla-Favera, R -- Franchini, G -- Gelmann, E P -- Gallo, R C -- New York, N.Y. -- Science. 1981 Jul 10;213(4504):226-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6264598" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; *Cell Transformation, Viral ; *Cloning, Molecular ; DNA/*genetics ; DNA, Viral/*genetics ; *Genes ; Humans ; Nucleic Acid Hybridization ; Retroviridae/*genetics ; Sarcoma Virus, Woolly Monkey/genetics ; Sarcoma Viruses, Murine/genetics ; Species Specificity
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    Two classes of single-stranded regions in DNA from sea urchin embryos (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-02-06
    Description: Native DNA from sea urchin embryos contains single-stranded regions (gaps) of up to 3000 nucleotides. The longer gaps (more than 1400 nucleotides) are nonrandomly distributed and are rich in histone gene sequences, other moderately repetitive sequences, and polypyrimidines. The shorter gaps are associated with DNA replication. A method for isolation of the two classes of single-stranded DNA pieces is reported.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wortzman, M S -- Baker, R F -- New York, N.Y. -- Science. 1981 Feb 6;211(4482):588-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7455698" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation ; *DNA Replication ; DNA, Single-Stranded/*analysis/genetics ; Genes ; Histones/*genetics ; Recombination, Genetic ; Sea Urchins/*genetics
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    Transmitter sensitivity of neurons assayed by autoradiography (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-22
    Description: Ionic conductance channels that are opened by activating nicotinic acetylcholine receptors at synapses of sympathetic neurons are permeable to small organic amines. Uptake of a tritium-labeled amine through these channels can be measured by autoradiography. This provides a simple and direct way to assess the sensitivity of individual neurons to acetylcholine without using microelectrodes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yoshikami, D -- NS00465/NS/NINDS NIH HHS/ -- NS15543/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 May 22;212(4497):929-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6262911" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/pharmacology ; *Agmatine ; Animals ; Autoradiography/methods ; Cell Membrane Permeability/drug effects ; *Guanidines ; Ion Channels/drug effects ; Nicotine/pharmacology ; Parasympathomimetics/*pharmacology ; Ranidae ; Receptors, Cholinergic/*metabolism ; Receptors, Nicotinic/drug effects/*metabolism
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  • 137
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    Metastatic potential is positively correlated with cell surface sialylation of cultured murine tumor cell lines (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-06-26
    Description: The ability of murine tumor cells to metastasize spontaneously from subcutaneous sites is positively correlated with the total sialic acid content of the cells in culture, the degree to which the sialic acid is exposed on the tumor cell surface, and, most strongly, with the degree of sialylation of galactosyl and N-acetylgalactosaminyl residues in cell surface glycoconjugates. These findings suggest that sialic acid on the cell surface may play a role in tumor cell metastasis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yogeeswaran, G -- Salk, P L -- CA19312-01/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Jun 26;212(4502):1514-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233237" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Cell Membrane/*physiology ; Cell Transformation, Neoplastic ; Cell Transformation, Viral ; Mice ; *Neoplasm Metastasis ; Neoplasms, Experimental/*physiopathology ; Sialic Acids/*analysis
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  • 138
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    Therapy of mouse lymphoma with monoclonal antibodies to glycolipid: selection of low antigenic variants in vivo (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-01-30
    Description: Growth of mouse lymphoma L5178Y, which contains large quantitites of the gangliotriosylceramide (GgOs3Cer), in DBA/2 mice was suppressed by passive immunization with monoclonal immunoglobulin G3 antibodies to GgOS3Cer, but not by immunoglobulin M antibodies with or without added complement. Most groups of mice treated with monoclonal immunoglobulin G3 antibodies did not develop tumors, but the tumor that appeared in a treated animal had a much lower amount of the GgOS3Cer than the cells used for inoculation. Thus, passive immunization either prevented growth of the lymphoma or caused selection of a variant with a lower quantity of the antigen GgOS3Cer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Young, W W Jr -- Hakomori, S I -- CA27746/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Jan 30;211(4481):487-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7455688" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Neoplasm ; Antigens, Surface ; Clone Cells/immunology ; Glycolipids/*immunology ; Hybrid Cells/immunology ; Immunization, Passive ; Immunoglobulin G/administration & dosage ; Immunoglobulin M/administration & dosage ; Immunotherapy ; Lymphoma/immunology/*therapy ; Mice ; Neoplasms, Experimental/therapy
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  • 139
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    Reformation of organized connections in the auditory system after generation of the eighth nerve (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-07-10
    Description: Binaural cells in the superior olive normally have identical frequency sensitiveness when acoustically stimulated via either ear. The precision with which central connections are reformed after auditory nerve regeneration can be determined by comparing the frequency sensitiveness of the two binaural inputs to these cells. Three months after cutting the nerve and subsequent regeneration in the leopard frog, binaural cells once again have well-matched frequency sensitivities. Thus, the specificity of central connectivity that characterizes the auditory system in normal animals is restored after regeneration.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zakon, H -- Capranica, R R -- NS 09244/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 10;213(4504):242-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6972599" target="_blank"〉PubMed〈/a〉
    Keywords: Acoustic Stimulation ; Animals ; Electric Conductivity ; Evoked Potentials ; Functional Laterality ; Hearing ; *Nerve Regeneration ; Olivary Nucleus/physiology ; Rana pipiens ; Vestibulocochlear Nerve/*physiology
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  • 140
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    Water intake in hypovolemic sheep: effects of crushing the left atrial appendage (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-01-30
    Description: Sheep increased their water intake in proportion to the amount of protein-free, isosmotic fluid that was removed from their blood by ultrafiltration. This behavioral response to hypovolemia was eliminated by crushing the left atrial appendage of the heart. The surgical maneuver had no effect on basal water intake or on the drinking response to a salt load. These findings suggest that left atrial stretch receptors, which influence secretion of antidiuretic hormone when stimulated, may also play an important role in mediating thirst during hypovolemia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zimmerman, M B -- Blaine, E H -- Stricker, E M -- New York, N.Y. -- Science. 1981 Jan 30;211(4481):489-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7455689" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Pressure ; Blood Proteins/metabolism ; *Blood Volume ; Drinking Behavior/*physiology ; Female ; Glomerular Filtration Rate ; Heart/*innervation/physiology ; Mechanoreceptors/*physiology ; Sex ; Sheep ; Sodium/blood ; Thirst/physiology
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  • 141
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    Drug discrimination learning in lead-exposed rats (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-05-01
    Description: Lead acetate (0.02 or 0.5 percent) was administered to dams throughout the lactation period with half of the litters continuing on lead after weaning. Drug thresholds for d-amphetamine were determined by using the drug-discrimination learning paradigm. All the offspring that had been exposed to lead were less sensitive to the stimulus properties of d-amphetamine irrespective of whether or not they had continued on lead after weaning.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zenick, H -- Goldsmith, M -- New York, N.Y. -- Science. 1981 May 1;212(4494):569-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209554" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/drug effects ; Dextroamphetamine/*pharmacology ; Discrimination Learning/*physiology ; Disease Models, Animal ; Female ; Fetus/drug effects ; Lead Poisoning/*physiopathology ; Male ; Pregnancy ; Rats
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  • 142
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    Magnetic material in the head of the common Pacific dolphin (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-08-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zoeger, J -- Dunn, J R -- Fuller, M -- New York, N.Y. -- Science. 1981 Aug 21;213(4510):892-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7256282" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dolphins/*physiology ; Dura Mater/physiology ; Head ; Magnetics ; Microscopy, Electron, Scanning ; Orientation/*physiology
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  • 143
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    Ontogeny of gastric acid secretion in the rat: evidence for multiple response systems (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-07-02
    Description: Gastric acid secretion has been thought to depend on histamine stimulation of the parietal cell. However, in the 2-week-old rat neither exogenous histamine nor the H-2 receptor agonist impromidine stimulates acid secretion, whereas pentagastrin and the cholinergic agent bethanechol are potent stimuli. At this age, the effect of pentagastrin in acid secretion is not blocked by the H-2 receptor antagonist cimetidine, nor is it potentiated by impromidine. These data suggest that, in the rat pup, the acid secretory response to pentagastrin and cholinergic agents occurs before the histamine-mediated system is functional and operates independently of the actions of histamine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ackerman, S H -- K1-MH00077/MH/NIMH NIH HHS/ -- R01-AM-18804/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1982 Jul 2;217(4554):75-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6211765" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; Bethanechol Compounds/pharmacology ; Gastric Juice/drug effects/*secretion ; Gastric Mucosa/growth & development ; Guanidines/pharmacology ; Histamine/pharmacology ; Imidazoles/pharmacology ; Impromidine ; Pentagastrin/pharmacology ; Rats ; Rats, Inbred Strains ; Receptors, Histamine H2/drug effects
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  • 144
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    Sensitivity to carcinogenesis in nude mice: skin tumors caused by transplacental exposure to ethylnitrosourea (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-11-12
    Description: Female athymic nude mice and their phenotypically normal littermates were exposed transplacentally to ethylnitrosourea. Skin tumors (papillomas and sebaceous adenomas) developed on the nude mice with an almost tenfold greater incidence than on their haired littermates. Skin tumors were also induced on nude mice but not haired controls by direct intraperitoneal treatment with ethylnitrosourea. These results indicate that nude mice have higher than normal susceptibility to carcinogenesis under some circumstances.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, L M -- Last-Barney, K -- Budinger, J M -- CA 08748/CA/NCI NIH HHS/ -- CA 22498/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1982 Nov 12;218(4573):682-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7134965" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoma/chemically induced ; Animals ; *Ethylnitrosourea ; Female ; *Maternal-Fetal Exchange ; Mice ; Mice, Nude/*physiology ; Neoplasms, Experimental/chemically induced ; *Nitrosourea Compounds ; Pregnancy ; Sebaceous Gland Neoplasms/chemically induced ; Skin Neoplasms/*chemically induced
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  • 145
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    Primary changes of membrane currents during retention of associative learning (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-02-05
    Description: A single identified neuron was repeatedly isolated by axotomy from the central nervous system of the nudibranch mollusk Hermissenda crassicornis. An early voltage-dependent outward K+ current of this neuron was reduced and more rapidly inactivated for animals previously trained with paired but not randomized light and rotation. Since this current change can affect interneuron and motorneuron output via known synaptic pathways, it helps explain a long-lasting behavioral change that shows the defining features of vertebrate associative learning.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alkon, D L -- Lederhendler, I -- Shoukimas, J J -- New York, N.Y. -- Science. 1982 Feb 5;215(4533):693-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7058334" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Association Learning/*physiology ; Central Nervous System/physiology ; Electric Conductivity ; Learning/*physiology ; Membrane Potentials ; Mollusca ; Neurons/*physiology ; Photoreceptor Cells/physiology ; Potassium/*physiology
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  • 146
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    Rapid and precise down regulation of fast axonal transport of transmitter in an identified neuron (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-11-26
    Description: Within 1 day after the removal of one branch of the bifurcated axon of an identified neuron in Aplysia, the cell body reduced its output of transmitter storage vesicles to adjust precisely for the decreased need. This adjustment terminated the initial consequence of the removal, the transport of an inappropriately large number of vesicles to the remaining synapses. The most likely cause of the reduction of transport of transmitter is the loss of information normally provided by the disconnected axon or synapses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aletta, J M -- Goldberg, D J -- GM 07182/GM/NIGMS NIH HHS/ -- NS 14711/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Nov 26;218(4575):913-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6182616" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aplysia/physiology ; *Axonal Transport ; Axons/*physiology ; Biological Transport ; Cytoplasmic Granules/metabolism ; Intracellular Membranes/metabolism ; Serotonin/*metabolism
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  • 147
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    Prenatal and neonatal exposure to cimetidine results in gonadal and sexual dysfunction in adult males (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-10-29
    Description: Exposure of rats to cimetidine during intrauterine life and the immediate neonatal period results in hypoandrogenization in adult life with decreased weights of androgen-dependent tissues and decreased concentrations of testosterone. Moreover, sexual behavior patterns in adult life are disturbed as shown by a lack of sexual motivation and decreased performance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anand, S -- Van Thiel, D H -- New York, N.Y. -- Science. 1982 Oct 29;218(4571):493-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123252" target="_blank"〉PubMed〈/a〉
    Keywords: Abnormalities, Drug-Induced/*etiology ; Animals ; Animals, Suckling ; Cimetidine/metabolism/*toxicity ; Female ; Guanidines/*toxicity ; Male ; Pregnancy ; Pregnancy, Animal/drug effects ; Rats ; Sex Differentiation/*drug effects ; Sexual Behavior, Animal/drug effects
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  • 148
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    24-hydroxylation of 25-hydroxyvitamin D3: is it required for embryonic development in chicks? (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-07-30
    Description: As shown previously, laying hens given 1,25-dihydroxyvitamin D3 as their sole source of vitamin D produce fertile eggs having normal shells, but only 35 to 55 percent of the embryos are normal. Giving these hens additional 25-hydroxyvitamin D3, 24,25-dihydroxyvitamin D3, or 24,24-difluoro-25-hydroxyvitamin D3 at 1.25 nanomoles per day resulted in 90 to 100 percent normal embryos, and hence, hatchability. Since 24,24-difluoro-25-hydroxyvitamin D3 cannot be 24-hydroxylated, 24-hydroxylation is not required for this function of 25-hydroxyvitamin D3.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ameenuddin, S -- Sunde, M -- DeLuca, H F -- Ikekawa, N -- Kobayashi, Y -- New York, N.Y. -- Science. 1982 Jul 30;217(4558):451-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6979782" target="_blank"〉PubMed〈/a〉
    Keywords: 24,25-Dihydroxyvitamin D 3 ; Animal Feed ; Animals ; Calcifediol ; Calcitriol/analogs & derivatives/pharmacology ; Chick Embryo/*growth & development ; Chickens/metabolism ; Dihydroxycholecalciferols/pharmacology ; Female ; Hydroxycholecalciferols/*metabolism/pharmacology ; Hydroxylation
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  • 149
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    Rhodamine-123 selectively reduces clonal growth of carcinoma cells in vitro (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-12-10
    Description: Rhodamine-123, a cationic laser dye, markedly reduced the clonal growth of carcinoma cells but had little effect on nontumorigenic epithelial cells in vitro. This selective inhibitory effect of Rhodamine-123 on some carcinomas is unusual since known anticancer drugs, such as arabinosyl cytosine and methotrexate, have not been shown to exhibit such selectivity in vitro.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bernal, S D -- Lampidis, T J -- Summerhayes, I C -- Chen, L B -- New York, N.Y. -- Science. 1982 Dec 10;218(4577):1117-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7146897" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carcinoma/*drug therapy ; Cell Line ; Cell Survival/drug effects ; Mice ; Mitochondria/metabolism ; Neoplasms, Experimental/drug therapy ; Rhodamine 123 ; Rhodamines/metabolism/therapeutic use ; Time Factors ; Urinary Bladder Neoplasms/drug therapy
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  • 150
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    Gene transfer between eukaryotes (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-09-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Benveniste, R E -- Todaro, G J -- New York, N.Y. -- Science. 1982 Sep 24;217(4566):1202.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7112123" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Physiological Phenomena ; Eukaryotic Cells/*physiology ; Humans ; *Recombination, Genetic ; Retroviridae/genetics
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  • 151
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    Relaxation of isolated gastric smooth muscle cells by vasoactive intestinal peptide (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-04-30
    Description: Vasoactive intestinal peptide caused a prompt, dose-dependent relaxation of isolated gastric smooth muscle cells of the guinea pig and a significant increase in intracellular adenosine 3',5'-monophosphate coincidentally with optimum relaxation. Relaxation was augmented by a threshold concentration of isobutyl methylxanthine. The direct relaxant effect of vasoactive intestinal peptide and the distribution of nerves containing this peptide to circular smooth muscle support the view that vasoactive intestinal peptide is the neuromuscular transmitter of enteric inhibitory nerves.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bitar, K N -- Makhlouf, G M -- AM-15564/AM/NIADDK NIH HHS/ -- AM-28300/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1982 Apr 30;216(4545):531-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6176025" target="_blank"〉PubMed〈/a〉
    Keywords: 1-Methyl-3-isobutylxanthine/pharmacology ; Animals ; Cyclic AMP/physiology ; Gastrointestinal Hormones/*pharmacology ; Guinea Pigs ; In Vitro Techniques ; Muscle Contraction/*drug effects ; Muscle Relaxation/*drug effects ; Muscle, Smooth/*drug effects ; Neurotransmitter Agents/physiology ; Stomach/drug effects/*innervation ; Vasoactive Intestinal Peptide/*pharmacology
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  • 152
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    Reduced leucine-enkephalin--like immunoreactive substance in hamster basal ganglia after long-term ethanol exposure (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-06-25
    Description: Golden Syrian hamsters were placed individually in cages with three drinking bottles--one empty, one containing water, and the third containing water and ethanol. Control hamsters received water only. After 1 year the experimental hamsters showed a significantly lower concentration of leucine-enkephalin-like immunoreactive substance in the basal ganglia than the control hamsters. This finding indicates that the action of ethanol involves endogenous peptidyl opiates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Blum, K -- Briggs, A H -- Elston, S F -- DeLallo, L -- Sheridan, P J -- Sar, M -- New York, N.Y. -- Science. 1982 Jun 25;216(4553):1425-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089531" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Basal Ganglia/*drug effects ; Cricetinae ; Endorphins/*analysis ; Enkephalin, Leucine ; Enkephalins/*analysis/metabolism ; Ethanol/metabolism/*pharmacology ; Mesocricetus ; Time Factors
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  • 153
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    Role for the adenosine triphosphate-dependent proteolytic pathway in reticulocyte maturation (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-02-19
    Description: As reticulocytes mature into erythrocytes, organelles and many enzymes are lost. Protein degradation during reticulocyte maturation was measured by monitoring the release of tyrosine from cell proteins. Proteolysis in rabbit red blood cells was directly proportional to the number of reticulocytes and was low in erythrocytes. This process was inhibited by blockers of cellular adenosine triphosphate production and by agents, such as o-phenanthroline, N-ethylmaleimide, and hemin, which inhibit the soluble adenosine triphosphate-dependent proteolytic system. The breakdown of endogenous proteins in reticulocyte extracts was also inhibited by these agents and required adenosine triphosphate. Inhibitors of lysosomal function, however, did not affect proteolysis. Thus, the proteolytic system that degrades abnormal proteins also catalyzes the elimination of proteins during red cell development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boches, F S -- Goldberg, A L -- New York, N.Y. -- Science. 1982 Feb 19;215(4535):978-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7156977" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/*physiology ; Animals ; Blood Proteins/*metabolism ; Cell Differentiation ; Cyclophosphamide/pharmacology ; Deoxyglucose/pharmacology ; Dinitrophenols/pharmacology ; Lysosomes/enzymology ; Rabbits ; Reticulocytes/*physiology ; Tyrosine/analysis
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  • 154
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    Measurement of intracellular free calcium in monkey kidney cells with aequorin (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-07-16
    Description: A method has been developed for the measurement of intracellular free calcium in mammalian cells. The calcium-sensitive photoprotein aequorin can be incorporated into isolated cells by hypo-osmotic treatment without altering the cell viability, permeability, or metabolism. Intracellular calcium activity (Cai2+) was monitored in a perfusion system. In monkey kidney cells (LLC-MK2), Cai2+ is approximately 57 nanomoles per liter. Changes in Cai2+ with time can also be followed: exposure of the cells to anaerobiosis or the calcium ionophore A23187 reversibly increases Cai2+. The method has also been successfully tested in rat hepatocytes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Borle, A B -- Snowdowne, K W -- New York, N.Y. -- Science. 1982 Jul 16;217(4556):252-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6806904" target="_blank"〉PubMed〈/a〉
    Keywords: *Aequorin ; Anaerobiosis ; Animals ; Calcimycin/pharmacology ; Calcium/*metabolism ; Cell Line ; Kidney/drug effects/*metabolism ; Kinetics ; *Luminescent Proteins ; Macaca mulatta
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  • 155
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    Mice regrow the tips of their foretoes (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-08-20
    Description: Mice will replace the tip of a foretoe when it is amputated distal to the last interphalangeal joint. Amputation of the digit more proximal to the joint does not result in regrowth of the foretoe. Though this growth shares certain similarities with the epimorphic regeneration of amphibian limbs, the two processes are not the same. The regrowth reported here in mice is probably similar to the scattered clinical reports of fingertips regeneration in children, and presents a model system with which to explore the controls of wound healing and tissue reconstruction in mammals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Borgens, R B -- CA 20920/CA/NCI NIH HHS/ -- NS 18456/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Aug 20;217(4561):747-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7100922" target="_blank"〉PubMed〈/a〉
    Keywords: Amputation ; Animals ; Child ; Humans ; Mice ; Mice, Inbred C3H ; *Regeneration ; Toe Joint ; Toes/anatomy & histology/*physiology ; Wound Healing
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  • 156
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    Animals in the laboratory (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-05-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bowden, D M -- New York, N.Y. -- Science. 1982 May 14;216(4547):682, 684.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7079726" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Animals, Laboratory ; *Research Design
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  • 157
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    Micromolar affinity benzodiazepine receptors: identification and characterization in central nervous system (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-06-11
    Description: Receptors that selectively bind micromolar concentrations of benzodiazepines are present in rat brain membrane. These micromolar receptors exhibit saturable, stereospecific binding, and the potency of benzodiazepine binding to these receptors is correlated with the ability of the benzodiazepines to inhibit maximum electric shock-induced convulsions. Benzodiazepine receptors with nanomolar affinity differ from the micromolar receptors in their binding, kinetic, and pharmacologic characteristics. The micromolar receptors also bind phenytoin, a non-benzodiazepine anticonvulsant. These results provide evidence for a distinct class of clinically relevant benzodiazepine receptors that may regulate neuronal excitability and anticonvulsant activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bowling, A C -- DeLorenzo, R J -- NS 1352/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Jun 11;216(4551):1247-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6281893" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Benzodiazepines/*metabolism/pharmacology ; Benzodiazepinones/metabolism ; Brain/*metabolism ; Calmodulin/antagonists & inhibitors ; Diazepam/metabolism ; Kinetics ; Ligands ; Protein Kinase Inhibitors ; Rats ; Receptors, Drug/*metabolism ; Receptors, GABA-A ; Structure-Activity Relationship
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  • 158
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    Fast axonal transport in extruded axoplasm from squid giant axon (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-12-10
    Description: Development of video-enhanced contrast-differential interference contrast for light microscopy has permitted study of both orthograde and retrograde fast axonal transport of membranous organelles in the squid giant axon. This process was found to continue normally for hours after the axoplasm was extruded from the giant axon and removed from the confines of the axonal plasma membrane. It is now possible to follow the movements of the full range of membranous organelles (30-nanometer vesicles to 5000-nanometer mitochondria) in a preparation that lacks a plasma membrane or other permeability barrier. This observation demonstrates that the plasma membrane is not required for fast axonal transport and suggests that action potentials are not involved in the regulation of fast transport. Furthermore, the absence of a permeability barrier surrounding the axoplasm makes this an important model for biochemical pharmacological, and physical manipulations of membranous organelle transport.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brady, S T -- Lasek, R J -- Allen, R D -- GM27284/GM/NIGMS NIH HHS/ -- NS07118/NS/NINDS NIH HHS/ -- NS15731/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Dec 10;218(4577):1129-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6183745" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/physiology ; Animals ; *Axonal Transport ; Axons/*physiology ; Biological Transport, Active ; Cell-Free System ; Cytoplasmic Granules/physiology ; Cytoskeleton/physiology ; Decapodiformes ; Intracellular Membranes/physiology ; Microscopy/methods ; Microtubules/physiology ; Motion Pictures as Topic
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  • 159
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    Anatomical plasticity and sparing of function after spinal cord damage in neonatal cats (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-08-06
    Description: Spinal cord damage in neonatal cats has different effects on different spinal pathways. Corticospinal projections exhibit anatomical plasticity, forming an aberrant pathway that bypasses the lesion. In contrast, brainstem-spinal pathways undergo massive retrograde degeneration. Neither of these responses occurs in adult cats. Sparing of motor function is found in cats operated on as neonates but not in cats operated on as adults, and appears to depend on the plasticity of the corticospinal tract.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bregman, B S -- Goldberger, M E -- GM06772/GM/NIGMS NIH HHS/ -- NS16629/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Aug 6;217(4559):553-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089581" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn/*physiology ; Brain Stem/pathology ; Cats/*physiology ; Horseradish Peroxidase/metabolism ; Motor Activity/physiology ; Motor Cortex/pathology ; Neural Pathways/physiopathology ; *Neuronal Plasticity ; Neurons, Efferent/metabolism ; Retrograde Degeneration ; Spinal Cord Injuries/*physiopathology
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  • 160
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    Stereoisomers of N-allylnormetazocine: phencyclidine-like behavioral effects in squirrel monkeys and rats (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-01-08
    Description: (+/-)-N-Allylnormetazocine is a benzomorphan opioid with psychotomimetic effects. The pure stereoisomers of this compound, as well as the racemic mixture, were compared to phencyclidine for their behavioral effects on squirrel monkeys and rats trained to discriminate phencyclidine from saline. Dose-response determinations were made for responses to phencyclidine, to a racemic mixture of N-allylnormetazocine, and to the pure levo and dextro isomers of N-allylnormetazocine. In both rats and monkeys, the dextro isomer and the racemic mixture produced dose-dependent responses appropriate for phencyclidine; the levo isomer did not produce the responses appropriate for phencyclidine at any of the doses tested. In both species, the levo isomer was more potent than the dextro isomer in decreasing the rate of responding. Thus racemic N-allylnormetazocine is a mixture of compounds that produce different behavioral effects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brady, K T -- Balster, R L -- May, E L -- DA-00490/DA/NIDA NIH HHS/ -- DA-01442/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 8;215(4529):178-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6274022" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/*drug effects ; Male ; Naloxone/pharmacology ; Phenazocine/*analogs & derivatives/pharmacology ; Phencyclidine/pharmacology ; Rats ; Rats, Inbred Strains ; Receptors, Opioid/drug effects ; Saimiri ; Stereoisomerism ; Structure-Activity Relationship
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  • 161
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    Reversal of morphine disruption of maternal behavior by concurrent treatment with the opiate antagonist naloxone (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-10-08
    Description: Rats whose pregnancies were surgically terminated on day 17 of gestation were injected with morphine, morphine plus naloxone hydrochloride, or saline, and then tested for maternal responsiveness toward foster young. Morphine treatment alone significantly disrupted the rate of onset and quality of maternal responsiveness. Concurrent administration of naloxone to morphine-injected rats reinstated the rapid onset of behavioral responsiveness toward foster young, such that the responsiveness of the rats treated with both morphine and naloxone was indistinguishable from that shown by saline-injected controls. The disruptive effects of morphine did not appear to result from a general reduction in activity levels as measured in an open-field apparatus. These findings suggest that the normal onset and maintenance of maternal behavior in the rat may be regulated by endogenous opiates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bridges, R S -- Grimm, C T -- New York, N.Y. -- Science. 1982 Oct 8;218(4568):166-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123227" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/*drug effects ; Drug Antagonism ; Female ; Morphine/*pharmacology ; Naloxone/*pharmacology ; Pregnancy ; Rats ; Rats, Inbred Strains
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    T-lymphocyte immunology and hominoid evolution (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-12-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cartmill, M -- New York, N.Y. -- Science. 1982 Dec 10;218(4577):1145.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6983135" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Humans ; Primates/*genetics ; T-Lymphocytes/*immunology
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  • 163
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    Muscular contraction: kinetics of crossbridge attachment studied by high-frequency stiffness measurements (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-07-02
    Description: Instantaneous stiffness of frog skeletal muscle, an indication of the proportion of attached crossbridges, was determined drug the tetanus rise and after a step length change imposed during the tetanus plateau. During the onset of contraction as well as after a step, the ratio of stiffness to force differed from that determined during the tetanus plateau. The data after a step are predicted by the Huxley-Simmons model of muscular contraction, but the results during the rise suggest that a long-lived state may exist between crossbridge attachment and force generation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cecchi, G -- Griffiths, P J -- Taylor, S -- NS 14268/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Jul 2;217(4554):70-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6979780" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Mathematics ; *Muscle Contraction ; Muscles/physiology/ultrastructure ; Rana temporaria
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  • 164
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    Long-term synaptic potentiation in the superior cervical ganglion (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-03-12
    Description: Brief tetanic stimulation of the preganglionic nerves to the superior cervical ganglion enhances the postganglionic response to single preganglionic stimuli for 1 to 3 hours. This long-term potentiation of transmission through the ganglion is apparently not attributable to a persistent muscarinic action of the preganglionic neurotransmitter, acetylcholine, since neither the magnitude nor the time course of the phenomenon is reduced by atropine. The decay of long-term potentiation can be described by a first-order kinetic process with a mean time constant of 80 minutes. We conclude that long-term potentiation, once considered a unique property of the hippocampus, is in fact a more general feature of synaptic function. This form of synaptic memory may significantly influence information processing and control in other regions of the nervous system, including autonomic ganglia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brown, T H -- McAfee, D A -- 12116/PHS HHS/ -- NS 16576/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Mar 12;215(4538):1411-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6278593" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Ganglia, Sympathetic/*physiology ; Kinetics ; Learning/*physiology ; Neuronal Plasticity ; Rats ; Synapses/*physiology ; *Synaptic Transmission ; Time Factors
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  • 165
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    Radiosensitization of hypoxic tumor cells by depletion of intracellular glutathione (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-08-06
    Description: Depletion of glutathione in Chinese hamster ovary cells in vitro by diethyl maleate resulted in enhancement of the effect of x-rays on cell survival under hypoxic conditions but not under oxygenated conditions. Hypoxic EMT6 tumor cells were similarly sensitized in vivo. The action of diethyl maleate is synergistic with the effect of the electron-affinic radiosensitizer misonidazole, suggesting that the effectiveness of misonidazole in cancer radiotherapy may be improved by combining it with drugs that deplete intracellular glutathione.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bump, E A -- Yu, N Y -- Brown, J M -- CA-15201/CA/NCI NIH HHS/ -- CM-87207/CM/NCI NIH HHS/ -- New York, N.Y. -- Science. 1982 Aug 6;217(4559):544-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089580" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anoxia ; Cell Survival/drug effects/*radiation effects ; Cells, Cultured ; Cricetinae ; Cricetulus ; Drug Synergism ; Glutathione/*metabolism ; Maleates/administration & dosage ; Mice ; Mice, Inbred BALB C ; Misonidazole/administration & dosage ; Neoplasms, Experimental/metabolism ; *Oxygen Consumption
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  • 166
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    OSHA policy on carcinogens (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-09-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cowan, M D -- New York, N.Y. -- Science. 1982 Sep 3;217(4563):884.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7112101" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Carcinogens ; Humans ; Occupational Diseases/chemically induced ; United States ; *United States Occupational Safety and Health Administration
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  • 167
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    Deficiency of functional messenger RNA for a developmentally regulated beta-crystallin polypeptide in a hereditary cataract (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-07-30
    Description: The messenger RNA for a beta-crystallin polypeptide with a molecular size of 27 kilodaltons, first detected 5 to 10 days after birth in the normal mouse lens and the Nakano mouse cataract, was not detected in the Philly mouse cataract with translation in vitro. The heterozygous Philly lens had intermediate levels of the 27-kilodalton beta-crystallin polypeptide and exhibited delayed onset of the cataract. The deficiency of functional 27-kilodalton beta-crystallin messenger RNA is the earliest lesion reported yet for the Philly lens and points to a transcriptional or posttranscriptional developmental defect in this hereditary cataract.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carper, D -- New York, N.Y. -- Science. 1982 Jul 30;217(4558):463-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6178163" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cataract/*genetics ; Cell-Free System ; Crosses, Genetic ; Crystallins/*genetics ; Mice ; Mice, Inbred Strains ; Protein Biosynthesis ; Proteins ; RNA/genetics ; RNA Splicing ; RNA, Messenger/*genetics
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  • 168
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    Ethanol in low doses augments calcium-mediated mechanisms measured intracellularly in hippocampal neurons (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-01-15
    Description: The electrophysiological effects of ethanol in low doses (5 to 20 millimoles per liter or 23 to 92 milligrams per 100 milliliters) were examined intracellularly in CA1 cells of rat hippocampus in vitro. Inhibitory and excitatory postsynaptic potentials were increased when ethanol was applied to the respective synaptic terminal regions. Postsynaptically, ethanol caused a moderate hyperpolarization with increased membrane conductance, even when synaptic transmission was blocked. Ethanol augmented the hyperpolarization that followed repetitive firing or that followed the eliciting of calcium spikes in the presence of tetrodotoxin, but not the rapid afterhyperpolarization in calcium-free medium. Ethanol appears to augment calcium-mediated mechanisms both pre- and postsynaptically.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carlen, P L -- Gurevich, N -- Durand, D -- R01 NS16660-01/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 15;215(4530):306-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7053581" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/physiology ; Electric Conductivity ; Ethanol/*pharmacology ; Hippocampus/*drug effects/physiology ; Male ; Membrane Potentials/drug effects ; Potassium/physiology ; Rats ; Rats, Inbred Strains ; Synaptic Membranes/drug effects ; Tetrodotoxin/pharmacology
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    Development of mouse embryos in vitro: preimplantation to the limb bud stage (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-10-01
    Description: Mouse embryos were grown successfully in vitro from the blastocyst stage to the limb bud stage. Mouse blastocysts grown in vitro for 10 days showed blood circulation in the yilk sac, forelimb buds, and the primordia of liver, pancreas, and lungs. These characteristics are indicative of a developmental stage equivalent to one-half of the total gestation period in utero. Improvements in culture conditions from days 7 to 9 have made it feasible to culture mouse blastocysts beyond the early somite stage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, L T -- Hsu, Y C -- AM 19535/AM/NIADDK NIH HHS/ -- AM 28550/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1982 Oct 1;218(4567):66-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123220" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blastocyst/*physiology ; Cell Differentiation ; Culture Media ; Culture Techniques ; Embryo, Mammalian/*physiology ; Female ; Fetal Blood ; Humans ; Mice ; Pregnancy ; Yolk Sac/physiology
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  • 170
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    High angiotensin-converting enzyme activity in the neurohypophysis of Brattleboro rats (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-05-07
    Description: The activity of angiotensin-converting enzyme is significantly higher in the intermediate and posterior pituitary lobes of Brattleboro rats than in Long-Evans control rats. The high activity level was reversed by vasopressin treatment. Conversely, angiotensin-converting enzyme activity was significantly lower in the anterior pituitary of Brattleboro rats than in Long-Evans rats, and this activity level was not affected by vasopressin. these findings suggest an inverse relation between vasopressin and angiotensin systems in the posterior and intermediate lobes of the pituitary gland.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chevillard, C -- Saavedra, J M -- New York, N.Y. -- Science. 1982 May 7;216(4546):646-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6280284" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Diabetes Insipidus/*enzymology/genetics ; Disease Models, Animal ; Peptidyl-Dipeptidase A/*metabolism ; Pituitary Gland, Posterior/*enzymology ; Rats ; Rats, Mutant Strains/*physiology ; Vasopressins/*physiology
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  • 171
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    In vitro Evidence for two distinct hippocampal growth factors: basis of neuronal plasticity? (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-07-02
    Description: The rat hippocampal formation was tested for the presence of factors that would accelerate neurite extension from chick parasympathetic (ciliary ganglion) or sympathetic (lumbar chain) neurons in vitro. Two growth factors were identified in extracts of this brain region. One accelerated neurite extension from sympathetic neurons and was blocked by antiserum to nerve growth factor. The other accelerated neurite extension from parasympathetic neurons but was not affected by the antiserum. These results suggest that specific growth factors account for the specificity of neuronal sprouting.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crutcher, K A -- Collins, F -- NS 17131/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Jul 2;217(4554):67-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089542" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/physiology ; Cells, Cultured ; Chick Embryo ; Ganglia, Parasympathetic/physiology ; Ganglia, Sympathetic/physiology ; Growth Substances/*physiology ; Hippocampus/*physiology ; Neurons/*physiology
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  • 172
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    Substantia nigra: site of anticonvulsant activity mediated by gamma-aminobutyric acid (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-12-17
    Description: Localization of the anatomic substrate for anticonvulsant activity mediated by gamma-aminobutyric acid (GABA) was examined using intracerebral injections of GABA agonists. Blockade of tonic hindlimb extension in the maximal electroshock test and blockade of tonic and clonic seizures produced by pentylenetetrazole and bicuculline were obtained by elevating GABA in the ventral midbrain tegmentum. Elevation of GABA in forebrain and hindbrain areas had no effect on convulsant activity. Blockade of tonic and clonic seizures was also obtained after microinjections of the direct GABA receptor agonist, muscimol, into the midbrain. The substantia nigra was identified as the critical midbrain site for GABA-mediated anticonvulsant activity. Local injection of GABA agonists into the midbrain provided seizure protection without a widespread augmentation of GABA-mediated activity throughout the brain and without impairing either alertness or motor function. Synapses in the substantia nigra appear to represent an important control mechanism for inhibiting the propagation of generalized convulsions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iadarola, M J -- Gale, K -- DA 02206/DA/NIDA NIH HHS/ -- MH32359/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1982 Dec 17;218(4578):1237-40.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7146907" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bicuculline/pharmacology ; Brain Mapping ; GABA Antagonists ; Male ; Muscimol/pharmacology ; Pentylenetetrazole/pharmacology ; Rats ; Seizures/*physiopathology ; Substantia Nigra/*physiology ; gamma-Aminobutyric Acid/*physiology
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  • 173
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    Calcium ionophore polarizes ooplasmic segregation in ascidian eggs (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-04-30
    Description: Calcium ionophore A23187 promotes ooplasmic segregation and orange crescent formation in eggs of the ascidian Boltenia villosa. When eggs were exposed to a gradient A23187 the orange crescent was induced to form in the region corresponding to the highest concentration of ionophore. This result is consistent with the hypothesis that a local increase in intracellular calcium polarizes cytoplasmic localization in the ascidian embryo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jeffery, W R -- 232-HDO-7098/HD/NICHD NIH HHS/ -- HD-13970/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1982 Apr 30;216(4545):545-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6803360" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Bacterial Agents/*pharmacology ; Calcimycin/*pharmacology ; Calcium/*physiology ; Cell Compartmentation/drug effects ; Cytoplasm/ultrastructure ; Dose-Response Relationship, Drug ; Female ; Ovum/*drug effects/ultrastructure ; Urochordata
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  • 174
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    Growth hormone stimulates longitudinal bone growth directly (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-06-11
    Description: Local administration of human growth hormone in vivo to the cartilage growth plate of the proximal tibia of hypophysectomized rats resulted in accelerated longitudinal bone growth. This finding suggests that growth hormone directly stimulates the cells in the growth plate, and does not support the theory that the increase in the plasma concentration of somatomedin that follows growth hormone administration is the cause of this stimulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Isaksson, O G -- Jansson, J O -- Gause, I A -- New York, N.Y. -- Science. 1982 Jun 11;216(4551):1237-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7079756" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Development/*drug effects ; Bone and Bones/*drug effects ; Growth Hormone/*pharmacology ; Male ; Prolactin/pharmacology ; Rats ; Somatomedins/pharmacology ; Stimulation, Chemical
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  • 175
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    Naloxone antagonism of the thermoregulatory effects of phencyclidine (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-09-24
    Description: Phencyclidine elicits hyperthermia at low doses and hypothermia at high doses in rats. Naloxone antagonizes both effects. Phencyclidine's effects on thermo-regulation are probably mediated by an interaction with a mu opiate receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Glick, S D -- Guido, R A -- DA 02534/DA/NIDA NIH HHS/ -- DA 70082/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1982 Sep 24;217(4566):1272-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6287581" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Body Temperature Regulation/*drug effects ; Dose-Response Relationship, Drug ; Female ; Naloxone/pharmacology ; Phencyclidine/antagonists & inhibitors/*pharmacology ; Rats ; Receptors, Opioid/*drug effects
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  • 176
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    Serotonin analog selectively ablates indentified neurons in the leech embryo (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-04-16
    Description: Exposure of embryonic leeches to 5,7-dihydroxytryptamine a cytotoxic analog of the monoamine neurotransmitter serotonin, results in the selective ablation of serotonin-containing neurons in the ventral nerve cord. Other neurons appear to be unaffected by this treatment, including those that contain another monoamine neurotransmitter, dopamine. Embryos with ablations continue to develop into juvenile leeches, but as juveniles they are unable to make normal swimming movements. However, normal swimming movements can be instated in such leeches by injecting them with serotonin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Glover, J C -- Kramer, A P -- GM 07048/GM/NIGMS NIH HHS/ -- NS 06456/NS/NINDS NIH HHS/ -- NS 12818/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Apr 16;216(4543):317-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7063890" target="_blank"〉PubMed〈/a〉
    Keywords: 5,7-Dihydroxytryptamine/*pharmacology ; Animals ; Behavior, Animal/drug effects ; Cell Survival/drug effects ; Dihydroxytryptamines/*pharmacology ; Leeches/*drug effects/embryology ; Locomotion/drug effects ; Membrane Potentials/drug effects ; Neurons/*drug effects ; Serotonin/analogs & derivatives/physiology
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  • 177
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    Receptors for maleylated proteins regulate secretion of neutral proteases by murine macrophages (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-11-05
    Description: Receptors for maleylated or acetylated proteins as well as for alpha-2-macroglobulin-protease complexes on macrophages serve as scavengers by mediating the uptake of macromolecules from the extracellular compartment. Described in this report is a novel function of these receptors on macrophages: regulation of neutral protease secretion. The binding of maleylated bovine serum albumin to macrophages triggered secretion of three neutral proteases: neutral caseinases, plasminogen activator, and cytolytic proteinase. Release of acid phosphatase, however, was not induced. An important biological consequence of protease secretion by macrophages, tumor-cytolysis, was also triggered by engagement of the receptor for maleylated bovine serum albumin. By contrast, the binding of alpha-2-macroglobulin-protease complexes to the macrophages suppressed secretion of all three proteases. Thus two receptors heretofore believed to serve principally as scavengers also regulate secretory functions of macrophages.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Johnson, W J -- Pizzo, S V -- Imber, M J -- Adams, D O -- New York, N.Y. -- Science. 1982 Nov 5;218(4572):574-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6289443" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Glycoproteins/*metabolism ; Macrophages/*enzymology ; *Metalloendopeptidases ; Mice ; Peptide Hydrolases/*secretion ; Plasminogen Activators/secretion ; Receptors, Cell Surface/*physiology
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  • 178
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    Evidence that glucose "marks" beta cells resulting in preferential release of newly synthesized insulin (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-10-01
    Description: Studies of isolated islets labeled with radioactive leucine show that glucose at a critical time "marks" islets in such a way as to cause preferential release of newly synthesized insulin. The preferential release of insulin from marked islets is relatively independent of subsequent secretagogues or rates of insulin secretion. Previous kinetic studies have indicated that the critical time at which marking occurs is after proinsulin biosynthesis but before the secretory event. Thus, secretory cells may regulate the diversion of newly synthesized material for immediate release as it is approaching or transiting the Golgi apparatus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gold, G -- Gishizky, M L -- Grodsky, G M -- AM 01410/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1982 Oct 1;218(4567):56-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6181562" target="_blank"〉PubMed〈/a〉
    Keywords: 1-Methyl-3-isobutylxanthine/pharmacology ; Animals ; Glucose/*pharmacology ; In Vitro Techniques ; Insulin/biosynthesis/*secretion ; Islets of Langerhans/drug effects/*secretion ; Kinetics ; Leucine ; Potassium/pharmacology ; Tolbutamide/pharmacology
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  • 179
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    Serial position curve in rats: role of the dorsal hippocampus (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-10-08
    Description: In an eight-arm radial maze, normal rats demonstrated good immediate retention for the order of first items (primacy component of serial position curve) and last items (recency component of serial position curve) of an eight-item (arm) list. In contrast, rats with dorsal hippocampal lesions displayed, on an immediate retention test, disruption of the primacy but not the recency component of the serial position curve. Furthermore, imposing a 10-minute delay before the retention test impaired all components of the serial position curve. These results support correspondence in mnemonic function of the hippocampus in animals and humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kesner, R P -- Novak, J M -- RR07092-12/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1982 Oct 8;218(4568):173-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123228" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Hippocampus/anatomy & histology/*physiology ; Male ; Memory/drug effects ; Rats ; *Serial Learning
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  • 180
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    Adenosine triphosphate synthesis coupled to K+ influx in mitochondria (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-05-14
    Description: The influx of K+ into swollen mitochondria in the presence of valinomycin results in the synthesis of adenosine triphosphate in which approximately one H+ disappears per adenosine triphosphate synthesized. The synthesis is blocked by atractyloside but is insensitive to oligomycin and relatively insensitive to uncouplers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kinnally, K W -- Tedeschi, H -- GM27043/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1982 May 14;216(4547):742-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6281882" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/*biosynthesis ; Animals ; Antimycin A/pharmacology ; Atractyloside/pharmacology ; Cyanides/pharmacology ; Ion Channels/physiology ; Mitochondria/*metabolism ; Mitochondrial Swelling ; Phosphorylation ; Potassium/*metabolism ; Rotenone/pharmacology ; Uncoupling Agents/pharmacology ; Valinomycin/pharmacology
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  • 181
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    Monoclonal antibody to acetylcholine receptor: cell line established from thymus of patient with Myasthenia gravis (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-02-19
    Description: A human B cell line producing a monoclonal antibody to an antigenic determinant of acetylcholine receptors was established by cloning B cells that had been transformed in vitro by Epstein-Barr virus. The B cells were obtained from the thymus of a patient with myasthenia gravis. The antibody produced by the cell line precipitated acetylcholine receptors from denervated and innervated rat muscle and from human muscle, but did not show detectable response to the acetylcholine receptors from the electric organs of Narke japonica. The monoclonal antibody showed identical binding patterns in innervated and denervated rat muscles. Passive transfer of the monoclonal antibody into rats induced moderate muscle weakness and electromyographic changes characteristic of myasthenia gravis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kamo, I -- Furukawa, S -- Tada, A -- Mano, Y -- Iwasaki, Y -- Furuse, T -- Ito, N -- Hayashi, K -- Satoyoshi, E -- New York, N.Y. -- Science. 1982 Feb 19;215(4535):995-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6297000" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibodies, Monoclonal ; B-Lymphocytes/immunology ; *Cell Line ; Cell Transformation, Viral ; Herpesvirus 4, Human ; Humans ; Muscles/immunology/innervation ; Myasthenia Gravis/immunology ; Rats ; Receptors, Cholinergic/*immunology
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  • 182
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    Velocity signals related to hand movements recorded from red nucleus neurons in monkeys (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-08-27
    Description: Neural activity of the red nucleus was studied in monkeys trained to operate devices requiring shoulder, elbow, wrist, hand, or finger movements. Single cell activity was more closely related to movements of the hand and fingers than to movements of the other joints. Discharge consistently preceded movements by a constant time interval; duration of discharge was highly correlated with the duration of movement; and discharge rate was highly correlated with movement velocity. These data suggest a role for the rubrospinal pathway in the initiation and control of hand movements.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kohlerman, N J -- Gibson, A R -- Houk, J C -- 5-R01-NS14703/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Aug 27;217(4562):857-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7100930" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Electromyography ; Hand/*physiology ; Macaca fascicularis ; Macaca mulatta ; Male ; Movement ; Neural Conduction ; Neurons/physiology ; Red Nucleus/*physiology
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  • 183
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    Alpha-substituted gamma-butyrolactones: new class of anticonvulsant drugs (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-09-10
    Description: Alkyl-Substituted gamma-butyrolactones were synthesized and tested for their convulsant and anticonvulsant actions in mice and guinea pigs. The alpha-substituted compounds, alpha, alpha-dimethyl-, and alpha-ethyl-alpha-methyl-gamma-butyrolactone were anticonvulsant compounds with a spectrum of activity similar to that of ethosuximide. In contrast, beta-substituted compounds were convulsant agents similar to picrotoxinin. The alpha-substituted-gama-butyrolactones represent a new class of anticonvulsant drug with experimental and clinical potential.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klunk, W E -- McKeon, A -- Covey, D F -- Ferrendelli, J A -- GM-07200/GM/NIGMS NIH HHS/ -- GM-24483/GM/NIGMS NIH HHS/ -- NS-14834/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1982 Sep 10;217(4564):1040-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6810462" target="_blank"〉PubMed〈/a〉
    Keywords: *4-Butyrolactone/analogs & derivatives/*therapeutic use/toxicity ; Animals ; *Anticonvulsants ; Chemical Phenomena ; Chemistry ; Convulsants ; Drug Evaluation, Preclinical ; Electroencephalography ; Epilepsy, Absence/drug therapy ; Ethosuximide/pharmacology ; *Furans/*therapeutic use ; Guinea Pigs ; Mice ; Structure-Activity Relationship ; Trimethadione/pharmacology
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  • 184
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    Modulation of striatal dopaminergic function by local injection of 5'-N-ethylcarboxamide adenosine (1982)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1982-10-01
    Description: Rats rotated to the left when 5'-N-ethylcarboxamide adenosine (NECA) was injected into the left caudate nucleus and apomorphine was administered subcutaneously. The combination of NECA and apomorphine was more potent than L-(phenylisopropyl)adenosine and apomorphine in eliciting rotation, suggesting the involvement of adenosine receptors of the Ra type. The response was reduced when 2',5'-dideoxyadenosine was injected along with NECA into the caudate nucleus or when theorphylline was given intraperitoneally. Higher doses of apomorphine elicited a self-mutilatory response after the injection of NECA into the caudate nucleus. These results suggest that adenosine may be involved in the modulation of dopaminergic function in the striatum.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Green, R D -- Proudfit, H K -- Yeung, S M -- New York, N.Y. -- Science. 1982 Oct 1;218(4567):58-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123218" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/administration & dosage/*analogs & derivatives/pharmacology ; Adenosine-5'-(N-ethylcarboxamide) ; Animals ; Apomorphine/pharmacology ; Caudate Nucleus/*physiology ; Corpus Striatum/*physiology ; Dopamine/*physiology ; Injections ; Kinetics ; Male ; Motor Activity/drug effects ; Rats ; Rats, Inbred Strains ; Rotation ; Vasodilator Agents/*pharmacology
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  • 185
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    Hair-cell innervation by spiral ganglion cells in adult cats (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-07-09
    Description: A horseradish peroxidase technique was used to trace the peripheral terminations of two types of ganglion cells in adult cats. It was found that large, usually bipolar ganglion cells end on inner hair cells and small, usually pseudomonopolar ganglion cells end on outer hair cells. Thus, a virtually complete segregation of afferent neural inputs from the two types of hair cells was directly confirmed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kiang, N Y -- Rho, J M -- Northrop, C C -- Liberman, M C -- Ryugo, D K -- P01NS13126/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Jul 9;217(4555):175-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089553" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cats/*physiology ; Cochlea/*innervation ; Ganglia/cytology ; Hair Cells, Auditory/*cytology ; Hair Cells, Auditory, Inner/cytology ; Histocytochemistry ; Horseradish Peroxidase/metabolism ; Neurons, Afferent/cytology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 186
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    Basilar membrane tuning in the cat cochlea (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-01-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Khanna, S M -- Leonard, D G -- 5 K04 NS 00292/NS/NINDS NIH HHS/ -- 5 R01 NS 03654/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 15;215(4530):305-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7053580" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Basilar Membrane/*physiology ; Cats ; Cochlea/*physiology ; Ear, Inner/*physiology ; Hearing/*physiology ; Vibration
    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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  • 187
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    alpha A-crystallin messenger RNA of the mouse lens: more noncoding than coding sequences (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-02-19
    Description: The 14S messenger RNA (1300 to 1500 nucleotides) for the alpha A chain of alpha-crystallin of the mammalian lens is nearly three times larger than required to code for the polypeptide that contains 173 amino acids. As a means of accounting for this anomaly, a complementary DNA clone for the mouse alpha A-crystallin messenger RNA was constructed in pBR322 and sequenced. Derivation of the protein sequence from the nucleic acid sequence showed that mouse alpha A-crystallin is similar to that of other organisms. The messenger RNA contains 536 nucleotides located on the 3' side of the coding region, excluding the polyadenylate stretch. This 3' sequence does not encode any other crystallin and has multiple termination codons in the three possible reading frames.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉King, C R -- Shinohara, T -- Piatigorsky, J -- New York, N.Y. -- Science. 1982 Feb 19;215(4535):985-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7156978" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cloning, Molecular ; Crystallins/*genetics ; Mice ; RNA, Messenger/*genetics
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 188
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    Serum from monkeys with histories of fetal wastage causes abnormalities in cultured rat embryos (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-01-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klein, N W -- Plenefisch, J D -- Carey, S W -- Fredrickson, W T -- Sackett, G P -- Burbacher, T M -- Parker, R M -- HD02774/HD/NICHD NIH HHS/ -- HD08633/HD/NICHD NIH HHS/ -- RR00166/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 1;215(4528):66-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7053560" target="_blank"〉PubMed〈/a〉
    Keywords: Abortion, Veterinary/*blood ; Animals ; Congenital Abnormalities/*etiology ; Ectogenesis ; Female ; Macaca nemestrina/blood ; Mice ; Pregnancy ; 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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  • 189
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    Brain receptors for appetite discovered (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-10-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G -- New York, N.Y. -- Science. 1982 Oct 29;218(4571):460-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123243" target="_blank"〉PubMed〈/a〉
    Keywords: Amphetamines ; Animals ; Appetite/*physiology ; Brain/*physiology ; *Carrier Proteins ; Mice ; Receptors, Adrenergic/*physiology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 190
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    Fish vision and the detection of planktonic prey (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-12-17
    Description: Planktivorous sunfish of various sizes were studied to ascertain whether growth-related changes in the retina are related to the ability to capture small planktonic crustaceans. Behaviorally, the larger fish detected and captured crustaceans that subtended smaller visual angles. Histological examination of the retinas revealed that the distance between cones, measured in minutes of visual angle, decreased as the animals grew, suggesting that the larger retinas could resolve smaller objects. These correlated behavioral and anatomical results suggest that improved visual resolution contributes to improved predation. This finding provides a selective advantage for the continuous retinal growth noted in many fish.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hairston, N G Jr -- Li, K T -- Easter, S S Jr -- EY-00168/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1982 Dec 17;218(4578):1240-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7146908" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Eye/anatomy & histology ; Fishes/*physiology ; Microscopy, Electron ; Ocular Physiological Phenomena ; Predatory Behavior/physiology ; Retina/ultrastructure ; Vision, Ocular/*physiology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 191
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    On the origin of introns (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-09-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1982 Sep 3;217(4563):921-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7112105" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Base Sequence ; *Genes ; Humans
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 192
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    Heterogeneity in epidermal basal keratinocytes: morphological and functional correlations (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-03-05
    Description: Two structurally distinct populations of basal keratinocytes, nonserrated and serrated, were observed in cynomolgus monkey and human palm epidermis. Anatomical location, fine structural features, and kinetic properties suggest that nonserrated cells represent a stem cell population and that serrated cells help anchor the epidermis to the dermis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lavker, R M -- Sun, T T -- AM 25140/AM/NIADDK NIH HHS/ -- EY 00125/EY/NEI NIH HHS/ -- EY 02472/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1982 Mar 5;215(4537):1239-41.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7058342" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Division ; Cell Nucleus/metabolism ; Epidermis/*cytology ; Hand ; Humans ; Macaca fascicularis
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 193
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    Complete amino acid sequence of urotensin I, a hypotensive and corticotropin-releasing neuropeptide from Catostomus (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-10-08
    Description: Urotensin I, purified from extracts of the urophysis of a teleost fish (Catostomus commersoni), exhibits potent hypotensive activity (mammals and birds) and corticotropin-releasing activity (both fish and mammals). The primary structure of this 41-residue peptide was determined to be H-Asn-Asp-Asp-Pro-Pro-Ile-Ser-Ile-Asp-Leu-Thr-Phe-His-Leu-Leu-Arg-Asn-Met-Ile-Glu - Met-Ala-Arg-Ile-Glu-Asn-Glu-Arg-Glu-Gln-Ala-Gly-Leu-Asn-Arg-Lys-Tyr-Leu-Asp-Glu -Val-NH2. Extraction with 0.1N HCl at 100 degrees C cleaves the amino-terminal tripeptide, yeilding a fully active analog, urotensin I(4-41). The amino acid sequence was confirmed by measuring the biological activity of synthetic urotensin I(4-41). Urotensin I exhibits a striking sequence homology with ovine corticotropin-releasing factor and with frog sauvagine. These three peptides exhibit similar activities in biological test systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lederis, K -- Letter, A -- McMaster, D -- Moore, G -- Schlesinger, D -- New York, N.Y. -- Science. 1982 Oct 8;218(4568):162-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6981844" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Corticotropin-Releasing Hormone ; Fishes ; Peptides/*isolation & purification ; Species Specificity ; Urotensins/*isolation & purification
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 194
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    Rabies treatment (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-10-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lele, R D -- New York, N.Y. -- Science. 1982 Oct 8;218(4568):110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123224" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dogs ; Humans ; Medicine, Ayurvedic ; Plant Extracts/*therapeutic use ; *Plants, Medicinal ; Rabies/*prevention & control
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 195
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    Purinergic regulation of food intake (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-07-02
    Description: Inosine peripherally administered to rats markedly suppressed spontaneous food intake and food intake induced by diazepam, muscimol, insulin, and food deprivation. The purines 2-deoxyguanosine and 2-deoxyinosine also suppressed food deprivation-induced feeding, whereas 7-methylinosine, which does not bind to the benzodiazepine binding site in vitro, had no effect on food intake when compared with controls. These results suggest that purines may represent endogenous substances that regulate food intake through interactions with the benzodiazepine receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levine, A S -- Morley, J E -- New York, N.Y. -- Science. 1982 Jul 2;217(4554):77-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7046046" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Appetite/*drug effects ; Deoxyguanosine/pharmacology ; Diazepam/pharmacology ; Eating/*drug effects ; Food Deprivation ; Inosine/analogs & derivatives/pharmacology ; Insulin/pharmacology ; Male ; Muscimol/pharmacology ; Purines/*pharmacology ; Rats ; Rats, Inbred Strains ; Structure-Activity Relationship
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 196
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    Extinction leaves its mark on ecology (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-10-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1982 Oct 1;218(4567):42-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7123216" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; *Ecology ; Models, Biological
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 197
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    Repeated DNA still in search of a function (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-08-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1982 Aug 13;217(4560):621-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6283639" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; DNA/*genetics ; DNA Transposable Elements ; DNA, Satellite/genetics ; *Repetitive Sequences, Nucleic Acid ; Species Specificity
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 198
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    How did humans evolve big brains? (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-05-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1982 May 21;216(4548):840-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7079741" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Brain/*anatomy & histology ; Energy Metabolism ; Humans ; Primates/*anatomy & histology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 199
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    Food fuels reproductive success (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-07-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewin, R -- New York, N.Y. -- Science. 1982 Jul 16;217(4556):238-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7089560" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Diet ; *Energy Metabolism ; Food ; Mammals/*physiology ; *Reproduction
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 200
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    Neuronal mapping: a photooxidation reaction makes Lucifer yellow useful for electron microscopy (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-09-03
    Description: Irradiation Lucifer yellow-filled neurons with intense blue light in the presence of 3,3'-diaminobenzidine produces an electron-opaque osmiophilic polymer within the injected cells. This technique is valuable when cobalt or horseradish peroxidase injections are difficult or when a second intracellular marker is needed to demonstrate neuronal contacts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maranto, A R -- New York, N.Y. -- Science. 1982 Sep 3;217(4563):953-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7112109" target="_blank"〉PubMed〈/a〉
    Keywords: 3,3'-Diaminobenzidine ; Animals ; Astacoidea ; Ganglia/physiology/ultrastructure ; In Vitro Techniques ; *Isoquinolines ; Leeches ; Light ; Microscopy, Electron/methods ; Neurons/physiology/*ultrastructure ; Synapses/ultrastructure
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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