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  • 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
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    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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  • 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
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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
    Print ISSN: 0036-8075
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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
    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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  • 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
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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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  • 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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  • 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
    Print ISSN: 0036-8075
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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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    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)
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    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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    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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    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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    Magnetic material in the head of the common Pacific dolphin (1981)
    American Association for the Advancement of Science (AAAS)
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    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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    Carbamoyl phosphate synthetase (glutamine-hydrolyzing): increased activity in cancer cells (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-04-24
    Description: The specific activity of carbamoyl phosphate synthetase (glutamine-hydrolyzing), the first and rate-limiting enzyme of de novo uridine 5'-triphosphate biosynthesis, was increased in 13 transplantable hepatomas, particularly in the rapidly growing tumors (5.7- to 9.5-fold), and the rise was correlated with tumor growth rates. Thus, synthetase activity was linked with both hepatic neoplastic transformation and progression. Synthetase specific activity was so elevated in a transplantable sarcoma (18-fold) and a kidney adenocarcinoma (5-fold). The increased activity should enhance the capacity of the pathway and should confer selective advantages to cancer cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aoki, T -- Weber, G -- CA-05034/CA/NCI NIH HHS/ -- CA-13526/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Apr 24;212(4493):463-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209543" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/enzymology ; Animals ; Carbamoyl-Phosphate Synthase (Glutamine-Hydrolyzing)/*metabolism ; Cell Differentiation ; Kidney Neoplasms ; Ligases/*metabolism ; Liver/enzymology ; Liver Neoplasms, Experimental/*enzymology/pathology ; Liver Regeneration ; Neoplasm Transplantation ; Rats ; Sarcoma, Experimental/enzymology
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    Diethylstilbestrol induces neoplastic transformation without measurable gene mutation at two loci (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-06-19
    Description: The frequency with which diethylstilbestrol induces neoplastic transformation and somatic mutation was measured concomitantly in Syrian hamster embryo cells. While diethylstilbestrol was as active as benzo[a]pyrene in inducing transformation, it failed to induce mutations at two conventionally studied loci. These results suggest that diethylstilbestrol may transform cells in the absence of gene mutations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barrett, J C -- Wong, A -- McLachlan, J A -- New York, N.Y. -- Science. 1981 Jun 19;212(4501):1402-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6262919" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Benzo(a)pyrene ; Benzopyrenes ; Carcinogens ; *Cell Transformation, Neoplastic ; Cells, Cultured ; Cricetinae ; Diethylstilbestrol/*pharmacology ; Embryo, Mammalian ; Genes/*drug effects ; Mesocricetus ; *Mutation
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  • 145
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    Suckling infant rats learn a preference for a novel olfactory stimulus paired with milk delivery (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-01-30
    Description: When presented a novel olfactory stimulus while suckling a passive dam, 11- to 14-day-old rat pups acquire a conditioned preference for that stimulus. The magnitude of the conditioned preference is greater if the pups received milk while suckling than if they did not. The results indicate that infants are capable of learning while suckling and that milk delivery plays a role in this associative process.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brake, S C -- MH 32429/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1981 Jan 30;211(4481):506-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7192882" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Population Groups/*physiology ; Animals ; Animals, Suckling/*physiology ; Association Learning/physiology ; Behavior, Animal/*physiology ; Conditioning (Psychology) ; Female ; *Lactation ; Pregnancy ; Rats ; Smell
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  • 146
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    Ctenidial autotomy in Corbicula fluminea in response to massive granulomas (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-05-01
    Description: Large granulomas (greater than 2 millimeters in diameter), stimulated by the presence of and formed around necrotic larval tissue in the inner demibranchs of Corbicula fluminea, are eliminated by autotomy. Granulocytes invade and destroy ctenidial epithelium adjacent to the granuloma, causing it and the granuloma to slough away into the mantle cavity, where they are removed as pseudofeces.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Britton, J C -- Barcellona, W J -- Hagan, J -- LaGrone, M L -- New York, N.Y. -- Science. 1981 May 1;212(4494):551-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209550" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Gills/immunology ; Granuloma/pathology/*veterinary ; Hyperplasia ; Mollusca/*immunology
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    Ape language (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-01-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bindra, D -- New York, N.Y. -- Science. 1981 Jan 2;211(4477):86-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7444454" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Communication ; Animals ; Hominidae/*physiology ; Language
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  • 148
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    Enhanced spinal cord regeneration in lamprey by applied electric fields (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-08-07
    Description: After a weak, steady electric current of approximately 10 microamperes was imposed across the completely severed spinal cord of the larval lamprey Petromyzon marinus, enhanced regeneration was observed in the severed giant reticulospinal neurons. The current was applied with implanted wick electrodes for 5 to 6 days after transection (cathode distal to lesion). The spinal cords were examined 44 to 63 days after the operation by means of intracellular fluorescent dye injections and electrophysiology. Extracellular stimulation of whole cords showed that action potentials in most of the electrically treated preparations were conducted in both directions across the lesion, but they were not conducted in either direction in most of the sham-treated controls. In most of the electrically treated animals, processes from giant axons with swollen irregular tips, indicating active growth, were seen in or across the lesion. Only a few of the sham-treated controls showed these features. It is possible that these facilitated regenerative responses were mediated by the effects of the artificially applied electric fields on the natural steady current of injury entering the spinal lesion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Borgens, R B -- Roederer, E -- Cohen, M J -- 1 F32 NS06188-01/NS/NINDS NIH HHS/ -- 2 P50-NS10174-07/NS/NINDS NIH HHS/ -- 5-507RR07015/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1981 Aug 7;213(4508):611-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7256258" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Axons/physiology ; Electric Stimulation ; Evoked Potentials ; Fishes/*physiology ; Lampreys/*physiology ; Larva ; Nerve Endings/physiology ; *Nerve Regeneration ; Spinal Cord/*physiology
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  • 149
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    Selection of a novel connection by adult molluscan neurons (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-04-03
    Description: Predictable change in neuronal connectivity can be induced in the buccal ganglia of adult Helisoma snails when neuritic growth is evoked by axotomy. Both transient and stable novel electrical connections are established between identified neurons. The breaking of inappropriate, normally transient connections is contingent on the formation of an appropriate connection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bulloch, A G -- Kater, S B -- 1 PO1 NS15350/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Apr 3;212(4490):79-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209523" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons ; Ganglia/cytology ; Morphogenesis ; *Nerve Regeneration ; *Neural Pathways ; Neurons/cytology ; Snails
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    Creationists limit scope of evolution case (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〉Broad, W J -- New York, N.Y. -- Science. 1981 Mar 20;211(4488):1331-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209512" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; California ; *Curriculum ; Humans ; Legislation as Topic ; *Religion and Science
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  • 151
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    Mouse oocytes transcribe injected Xenopus 5S RNA gene (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-01-23
    Description: Transcripts produced after injection of the Xenopus 5S RNA gene into oocyte germinal vesicles of mice migrate electrophoretically with the 5S RNA marker, an indication that the gene is transcribed and processed with considerable accuracy. Approximately two 5S RNA molecules are transcribed per gene per hour. This system may be useful in studying DNA processing and gene regulation by the mammalian ovum and might be modified to allow permanent incorporation of specific genes into mice.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brinster, R L -- Chen, H Y -- Trumbauer, M E -- HD 00239/HD/NICHD NIH HHS/ -- HD 12384/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1981 Jan 23;211(4480):396-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7194505" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; *Genes ; Mice/*genetics ; Microinjections ; Molecular Weight ; Oocytes/*physiology ; Ovum/*physiology ; RNA, Ribosomal/*genetics ; *Transcription, Genetic ; Xenopus laevis/genetics
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    Exposure of rats to alcohol in utero alters drug sensitivity in adulthood (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-06-26
    Description: Pregnant rats were intubated with alcohol (ethanol, 3 grams per kilogram) twice daily throughout gestation. Control animals received solutions of isocaloric sucrose. At birth, offspring were placed with untreated surrogate dams. Beginning at 6 months of age, the offspring were tested for their thermogenic responsiveness to various drugs and to cold. Prenatal exposure to alcohol resulted in tolerance to alcohol and cross-tolerance to pentobarbital and diazepam but did not affect responsiveness to cold. This pattern of effects suggest that prenatal exposure to alcohol produces specific long-term effects on the neural mechanisms underlying drug tolerance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abel, E L -- Bush, R -- Dintcheff, B A -- New York, N.Y. -- Science. 1981 Jun 26;212(4502):1531-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233243" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chlorpromazine/pharmacology ; Dextroamphetamine/pharmacology ; Diazepam/pharmacology ; Drug Hypersensitivity ; Drug Tolerance ; Ethanol/*pharmacology ; Female ; Fetus/*drug effects ; Morphine/pharmacology ; Pentobarbital/pharmacology ; Pregnancy ; Rats
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    Cyclophosphamide-induced spermatogenic effects detected in the F1 generation by behavioral testing (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-01-02
    Description: Fischer 344 male rats were treated with cyclophosphamide (10 milligrams per kilogram of body weight) for 5 weeks and subsequently mated to females previously treated with saline or cyclophosphamide. The F1 progeny of the cyclophosphamide-treated males exhibited behavior deficits when compared to controls. These data could indicate a chemically induced genetic effect manifested by behavioral alterations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adams, P M -- Fabricant, J D -- Legator, M S -- New York, N.Y. -- Science. 1981 Jan 2;211(4477):80-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7444453" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avoidance Learning ; Behavior, Animal/*physiology ; Cyclophosphamide/*pharmacology ; Female ; Locomotion ; Male ; Motor Activity ; Mutation ; Rats ; Spermatogenesis/*drug effects
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    Gonadotropin-releasing hormone receptor binding and pituitary responsiveness in estradiol-primed monkeys (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-09-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adams, T E -- Norman, R L -- Spies, H G -- HD-05751/HD/NICHD NIH HHS/ -- HD-11982/HD/NICHD NIH HHS/ -- RR-00163/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1981 Sep 18;213(4514):1388-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6267698" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Castration ; Estradiol/*pharmacology ; Feedback ; Female ; Macaca fascicularis ; Ovulation/drug effects ; Pituitary Gland, Anterior/*metabolism ; Receptors, Cell Surface/*metabolism ; Receptors, LHRH
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  • 155
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    Release of immunoreactive serotonin into the lumen of the feline gut in response to vagal nerve stimulation (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-09-11
    Description: Immunoreactive serotonin was detected in the lumen of the proximal jejunum of food-deprived cats. During perfusion of this intestinal segment in vivo, there was a constant basal rate of intraluminal secretion of this amine. The rate of secretion was significantly increased during efferent electrical stimulation of the cut cervical vagal nerves. This stimulatory effect was not altered after bilateral adrenalectomy was performed in the same animals. A synchronous release of substance P into the gut lumen was also demonstrated during vagal stimulation. During the period of increased intraluminal secretion of immunoreactive serotonin, there was no demonstrable change in the portal or systemic blood levels of this amine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ahlman, H -- DeMagistris, L -- Zinner, M -- Jaffe, B M -- 5R01AM2652202/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Sep 11;213(4513):1254-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6168020" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenalectomy ; Animals ; Cats ; Chromaffin System/*metabolism ; Electric Stimulation ; Enterochromaffin Cells/*metabolism ; Jejunum/*metabolism ; Radioimmunoassay ; Serotonin/*metabolism ; Substance P/metabolism ; Vagus Nerve/*physiology
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    In vivo carbon-13 nuclear magnetic resonance studies of mammals (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-11-06
    Description: Natural abundance carbon-13 nuclear magnetic resonances (NMR) from human arm and rat tissues have been observed in vivo. These signals arise primarily from triglycerides in fatty tissue. Carbon-13 NMR was also used to follow, in a living rat, the conversion of C-1-labeled glucose, which was introduced into the stomach, to C-1-labeled liver glycogen. The carbon-13 sensitivity and resolution obtained shows that natural abundance carbon-13 NMR will be valuable in the study of disorders in fat metabolism, and that experiments with substrates labeled with carbon-13 can be used to study carbohydrate metabolism in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alger, J R -- Sillerud, L O -- Behar, K L -- Gillies, R J -- Shulman, R G -- Gordon, R E -- Shae, D -- Hanley, P E -- AM27121/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Nov 6;214(4521):660-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7292005" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/drug effects ; Animals ; Carbon/*metabolism ; Carbon Isotopes ; Glucose/metabolism ; Humans ; Liver Glycogen/metabolism ; Magnetic Resonance Spectroscopy/*methods ; Models, Structural ; Rats ; Time Factors
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    Power spectrum analysis of heart rate fluctuation: a quantitative probe of beat-to-beat cardiovascular control (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-10
    Description: Power spectrum analysis of heart rate fluctuations provides a quantitative noninvasive means of assessing the functioning of the short-term cardiovascular control systems. We show that sympathetic and parasympathetic nervous activity make frequency-specific contributions to the heart rate power spectrum, and that renin-angiotensin system activity strongly modulates the amplitude of the spectral peak located at 0.04 hertz. Our data therefore provide evidence that the renin-angiotensin system plays a significant role in short-term cardiovascular control in the time scale of seconds to minutes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Akselrod, S -- Gordon, D -- Ubel, F A -- Shannon, D C -- Berger, A C -- Cohen, R J -- HL 19467/HL/NHLBI NIH HHS/ -- SO7 RR 07047/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 10;213(4504):220-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6166045" target="_blank"〉PubMed〈/a〉
    Keywords: Angiotensins/physiology ; Animals ; Blood Pressure/drug effects ; *Cardiovascular Physiological Phenomena ; Computers ; Dogs ; Enzyme Inhibitors ; Glycopyrrolate/pharmacology ; *Heart Rate/drug effects ; Methods ; Nitroprusside/pharmacology ; Oligopeptides/pharmacology ; Parasympathetic Nervous System/physiology ; Propranolol/pharmacology ; Renin/physiology ; Sympathetic Nervous System/physiology ; Teprotide
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    Sodium pump in skeletal muscle: central nervous system-induced suppression by alpha-adrenoreceptors (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-09-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Akaike, N -- New York, N.Y. -- Science. 1981 Sep 11;213(4513):1252-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6267696" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Transport, Active ; Catecholamines/physiology ; Decerebrate State ; Hypokalemia/*metabolism ; Male ; Muscle Denervation ; Muscles/*metabolism ; Potassium/metabolism ; Rats ; Receptors, Adrenergic/*physiology ; Receptors, Adrenergic, alpha/*physiology ; Sodium/metabolism ; Sodium-Potassium-Exchanging ATPase/*metabolism
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    Differentiation of murine bone marrow stem cells in vitro: long-term growth promoted by a lymphocyte-derived mediator (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-01-02
    Description: In attempts to induce differentiation of lymphoid cells from hematopoietic stem cells in vitro, the effects of allogeneic effect factor on the growth of murine bone marrow cultures were studied. Allogeneic effect factor is a soluble mediator derived from mixed secondary murine leukocyte cultures. For several weeks it supported the growth of bone marrow cultures, as indicated by the maintenance of stem cell activity, cellular proliferation, and heterogeneity. Another lymphokine, T cell growth factor, did not, Pre-T lymphocytes could be detected in these cultures for several weeks.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Altman, A -- Gilmartin, T D -- Katz, D H -- CA-25803/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Jan 2;211(4477):65-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6934621" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Bone Marrow Cells ; Cell Adhesion ; Cell Communication ; Cell Differentiation/*drug effects ; Colony-Forming Units Assay ; Glycoproteins/*pharmacology ; Hematopoietic Stem Cells/*cytology ; Histocompatibility Antigens Class II ; Lymph Nodes/cytology ; Lymphokines/*pharmacology ; Mice ; Mitogens
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    Phencyclidine, lysergic acid diethylamide, and mescaline: cerebral artery spasms and hallucinogenic activity (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-29
    Description: Phencyclidine (PCP), lysergic acid diethylamide (LSD), and mescaline produced potent contractile responses on isolated basilar and middle cerebral arteries, where, in terms of potency, LSD greater than mescaline greater than PCP. All three drugs produced cerebrovasospasm in a concentration range which parallels that needed for their psychotomimetic and intoxicating actions. Specific receptors for PCP, which subserve contraction and differ from those for LSD and mescaline, are found in cerebral arteries. Concentrations of PCP that produced near-maximum contractile responses on cerebral arteries were similar to those in the blood and brain of human subjects who had died from PCP overdoses. A specific calcium antagonist, verapamil, readily prevented (and reversed) PCP-induced vasospasm. This study provides direct evidence for PCP receptors in cerebral blood vessels, the biologic action of which can be reversed by a calcium antagonist; the clinical use of the latter could prove invaluable in treating PCP-intoxicated victims.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Altura, B T -- Altura, B M -- DA 02339/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1981 May 29;212(4498):1051-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7195070" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cerebral Arteries/drug effects/*physiology/physiopathology ; Dogs ; Female ; Hallucinations/*physiopathology ; Humans ; Lysergic Acid Diethylamide/*pharmacology ; Male ; Mescaline/*pharmacology ; Muscle Contraction/*drug effects ; Phencyclidine/*pharmacology
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    Vaginocervical stimulation selectively increases metabolic activity in the rat brain (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-03-06
    Description: Vaginocervical stimulation affects progesterone secretion, sperm transport, sexual receptivity, locomotion, and perception of pain in female rats. In this experiment, vaginocervical stimulation produced statistically significant increases in the metabolic uptake of carbon-14-labeled 2-deoxy-D-glucose in the following brain areas (ordered by magnitude of uptake): medial preoptic, mesencephalic reticular formation, bed nucleus of stria terminalis, dorsal raphe, and globus pallidus. The results provide information about the concurrent processing of sensory stimulation by several neural areas and indicate that the medial preoptic area is a receiving area for copulatory stimulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Allen, T O -- Adler, N T -- Greenberg, J H -- Reivich, M -- HD 04522/HD/NICHD NIH HHS/ -- I T32 MH 15092/MH/NIMH NIH HHS/ -- NS 10939-08/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Mar 6;211(4486):1070-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7466382" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*metabolism ; Cervix Uteri/*innervation ; *Copulation ; Deoxyglucose/metabolism ; Female ; Glucose/*metabolism ; Physical Stimulation ; Preoptic Area/metabolism ; Rats ; Vagina/*innervation
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    Oxalate degradation by microbes of the large bowel of herbivores: the effect of dietary oxalate (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-05-08
    Description: Rates of oxalate degradation by microbes in gastrointestinal contents from rabbits, guinea pigs, swine and a horse increased after additional of oxalate to diets. A similar response was previously observed with ruminal microbes from cattle and sheep. Bacterial that utilize oxalate for growth appear to be selected by increased levels of dietary oxalate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Allison, M J -- Cook, H M -- New York, N.Y. -- Science. 1981 May 8;212(4495):675-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7221555" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cecum/*microbiology ; Diet ; Guinea Pigs/microbiology ; Horses/microbiology ; Oxalates/*metabolism ; Rabbits/microbiology ; Rats/microbiology ; Rectum/*microbiology ; Swine/microbiology
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    Dye transfer through gap junctions between neuroendocrine cells of rat hypothalamus (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-03-13
    Description: Most magnocellular neurosecretory cells that terminate in the posterior pituitary secrete either vasopressin, oxytocin, or enkephalin. Intracellular injection of the fluorescent dye Lucifer Yellow into single magnocellular neurons in slices of rat hypothalamus resulted in dye transfer between these cells. Freeze-fracture replicas of these cells occasionally revealed gap junctions, which presumably contain channels that mediate the dye coupling. These two independent techniques strongly suggest that some mammalian neuropeptidergic cells are electrotonically coupled, providing a possible means for recruitment and synchronization of their electrical activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Andrew, R D -- MacVicar, B A -- Dudek, F E -- Hatton, G I -- NS 01940/NS/NINDS NIH HHS/ -- NS 16683/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Mar 13;211(4487):1187-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7466393" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Communication ; Fluorescent Dyes ; Freeze Fracturing ; Hypothalamus/*physiology/ultrastructure ; Intercellular Junctions/*physiology ; Paraventricular Hypothalamic Nucleus/physiology ; Rats ; Supraoptic Nucleus/physiology
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    Chitin: New facets of research (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-05-15
    Description: Research on chitin as a marine resource is pointing to novel applications for this cellulose-like biopolymer. Discovery of nondegrading solvent systems has permitted the spinning of filaments, for example, for use as surgical sutures. New methods for preparing the bioactive alkyl glycoside of N-acetyl-D-glucosamine (the monomer unit of chitin) and a microcrystalline chitin has encouraged their use as promoters for growth of bifidobacteria and as an aid in digestion of high-lactose cheese whey by domestic animals. Chitin-protein complexes of several crustacean species show great variability in ratios of chitin to covalently bound protein and in residual protein in the "purified" chitins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Austin, P R -- Brine, C J -- Castle, J E -- Zikakis, J P -- New York, N.Y. -- Science. 1981 May 15;212(4496):749-53.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7221561" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Feed ; Animals ; Cheese ; Chemical Phenomena ; Chemistry ; Chickens ; *Chitin ; Crystallography ; Lactose/metabolism ; Proteins/analysis ; Sutures ; *Technology
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  • 165
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    Adenosine 3',5'-monophosphate modulates thyrotropin receptor clustering and thyrotropin activity in culture (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-12-11
    Description: A biologically active rhodamine conjugate of thyrotropin binds at 4 degrees C to diffusely distributed membrane thyrotropin receptors which patch and become endocytosed into thyroid cells in a temperature-sensitive process. When the cells are first incubated with 8-bromo-cyclic adenosine monophosphate at 37 degrees C, the conjugate also binds to clustered receptors at 4 degrees C. Furthermore, 8-bromo-cyclic adenosine monophosphate reduces the amount of adenosine 3',5'-monophosphate (cyclic AMP) induced by thyrotropin. Hence, increased intracellular cyclic AMP induces receptor patching and reduces the concentration of cyclic AMP normally induced by thyrotropin. This suggests that cyclic AMP acts both as the second messenger of thyrotropin and also as the regulator of the level of thyrotropin receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Avivi, A -- Tramontano, D -- Ambesi-Impiombato, F S -- Schlessinger, J -- CA-25820/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Dec 11;214(4526):1237-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6272396" target="_blank"〉PubMed〈/a〉
    Keywords: 8-Bromo Cyclic Adenosine Monophosphate ; Animals ; Cell Line ; Cell Membrane/drug effects/metabolism ; Cyclic AMP/*analogs & derivatives/*metabolism/pharmacology ; Rats ; Receptors, Cell Surface/drug effects/*metabolism ; Receptors, Thyrotropin ; Thyroid Gland/metabolism ; Thyrotropin/*metabolism/pharmacology
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    The evolution of cooperation (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-03-27
    Description: Cooperation in organisms, whether bacteria or primates, has been a difficulty for evolutionary theory since Darwin. On the assumption that interactions between pairs of individuals occur on a probabilistic basis, a model is developed based on the concept of an evolutionarily stable strategy in the context of the Prisoner's Dilemma game. Deductions from the model, and the results of a computer tournament show how cooperation based on reciprocity can get started in an asocial world, can thrive while interacting with a wide range of other strategies, and can resist invasion once fully established. Potential applications include specific aspects of territoriality, mating, and disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Axelrod, R -- Hamilton, W D -- New York, N.Y. -- Science. 1981 Mar 27;211(4489):1390-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7466396" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; *Cooperative Behavior ; *Game Theory ; Humans ; Mathematics ; Models, Biological ; Selection, Genetic
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    Endogenous opiates and stress-induced eating (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-12-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Antelman, S M -- Rowland, N -- New York, N.Y. -- Science. 1981 Dec 4;214(4525):1149-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7302588" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Endorphins/*physiology ; Feeding Behavior/drug effects/*physiology ; Humans ; Naloxone/pharmacology ; Rats ; Rats, Inbred Strains ; Stress, Psychological/*physiopathology
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    Arsenic accumulation in Great Barrier Reef invertebrates (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-01-30
    Description: Arsenic concentrates in the kidneys of the giant clams of Australia's Great Barrier Reef. The highest concentrations measured were 1004 parts per million, of which most, 2066 parts per million, were in the water-soluble fraction containing trimethylarsoniumlactate and its derivatives. This accumulation is ascribed to a mechanism in which oceanic arsenate is assimilated by symbiotic zooxanthellae and subsequently deposited in host tissues. The gills are the major site of arsenic excretion by these animals. Gill membrane arsenolipids mediate exposure of their trimethylarsonium groups to the sea and its biological oxidative activities.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Benson, A A -- Summons, R E -- New York, N.Y. -- Science. 1981 Jan 30;211(4481):482-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7455685" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arsenic/*metabolism ; Australia ; Invertebrates/metabolism ; Kidney/metabolism ; *Marine Biology ; Phosphates/metabolism ; *Water Pollutants ; *Water Pollutants, Chemical
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    Different proteins associated with 10-nanometer filaments in cultured chick neurons and nonneuronal cells (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-01
    Description: A protein of molecular size 180 kilodaltons is associated with 10-nanometer filaments in neurons and is immunologically distinct from smaller putative neurofilament subunits and from 10-nanometer filament proteins in nonneuronal cells, such as myotubes and fibroblasts. Neurons do not contain vimentin, the major filament protein in many other cells, including the nonneuronal cells in cultures of neural tissue.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bennett, G S -- Tapscott, S J -- Kleinbart, F A -- Antin, P B -- Holtzer, H -- HD07152/HD/NICHD NIH HHS/ -- HL15835/HL/NHLBI NIH HHS/ -- HL18708/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 May 1;212(4494):567-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6163217" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cytoskeleton/*ultrastructure ; Desmin ; Epitopes ; Fibroblasts/analysis ; Glial Fibrillary Acidic Protein ; Keratins/analysis ; Molecular Weight ; Muscle Proteins/analysis ; Nerve Tissue Proteins/*analysis/immunology ; Neurofilament Proteins ; Spinal Cord/analysis ; Vimentin
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  • 170
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    Chloramphenicol administration during brain development: impairment of avoidance learning in adulthood (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-10
    Description: Rats treated with chloramphenicol from days 7 to 21 of intrauterine life (50 milligrams per kilogram per day, injected subcutaneously into the mothers) or in the first 3 days of extrauterine life (50 to 100 milligrams per kilogram per day) were trained for avoidance conditioning when 60 days old. The acquisition of the avoidance response was impaired to a highly significant degree in all the treated groups.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bertolini, A -- Poggioli, R -- New York, N.Y. -- Science. 1981 Jul 10;213(4504):238-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244633" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; Avoidance Learning/*drug effects ; Brain/drug effects/embryology/*growth & development ; Chloramphenicol/*pharmacology ; Female ; Male ; Maternal-Fetal Exchange ; Pregnancy ; Rats ; Sex Factors
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  • 171
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    Transport of energy in muscle: the phosphorylcreatine shuttle (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-01-30
    Description: In order to explain the insulin-like effect of exercise, it was proposed in 1951 that contracting muscle fibers liberate creatine, which acts to produce an acceptor effect--later called respiratory control--on the muscle mitochondria. The development of this notion paralleled the controversy between biochemists and physiologists over the delivery of energy for muscle contraction. With the demonstration of functional compartmentation of creatine kinase on the mitochondrion, it became clear that the actual form of energy transport in the muscle fiber is phosphorylcreatine. The finding of an isoenzyme of creatine phosphokinase attached to the M-line region of the myofibril revealed the peripheral receptor for the mitochondrially generated phosphorylcreatine. This established a molecular basis for a phosphorylcreatine-creatine shuttle for energy transport in heart and skeletal muscle and provided an explanation for the inability to demonstrate experimentally a direct relation between muscle activity and the concentrations of adenosine triphosphate and adenosine diphosphate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bessman, S P -- Geiger, P J -- New York, N.Y. -- Science. 1981 Jan 30;211(4481):448-52.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6450446" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphatases/metabolism ; Adenosine Triphosphate/*metabolism ; Animals ; Creatine/metabolism ; Creatine Kinase/metabolism ; *Energy Metabolism ; Kinetics ; Mitochondria, Heart/metabolism ; *Muscle Contraction ; Muscles/*metabolism ; Myosins/metabolism ; Phosphocreatine/*metabolism
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  • 172
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    Myeloma neuropathy: passive transfer from man to mouse (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-08-28
    Description: Mice were injected daily, for up to 10 weeks, with purified monoclonal immunoglobulin G from patients with myelomatous polyneuropathy or benign gammopathy. The animals developed a demyelinating polyneuropathy with slowed nerve conduction velocities. The putative antinerve factor may be an antibody since injection of Fab fragments from the monoclonal immunoglobulin G produced a similar demyelination. This provides evidence of a circulating factor in the serum of myeloma patients with polyneuropathy that reproduces typical features of the human disease on passive transfer. This disorder is thus distinguished from other neuropathies that occur as remote effects of malignant disease but have no identified pathogenic factors associated with them.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Besinger, U A -- Toyka, K V -- Anzil, A P -- Fateh-Mognadam, A -- Rouscher, R -- Heininger, K -- New York, N.Y. -- Science. 1981 Aug 28;213(4511):1027-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7268405" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoimmune Diseases/*immunology ; Demyelinating Diseases/*etiology/immunology/physiopathology ; Female ; Humans ; Immunization, Passive ; Immunoglobulin Fab Fragments ; Immunoglobulin Fc Fragments ; Immunoglobulin G ; Mice ; Multiple Myeloma/*complications ; Neural Conduction
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  • 173
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    Cystinuria in the maned wolf of South America (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-05-22
    Description: Of 42 maned wolves in zoos or live-trapped in Brazil, 34 had excessive cystine in their urine. Renal clearance studies of five of the affected wolves revealed a variable defect for the reabsorption of cystine and dibasic amino acids. The renal tubular handling of other solutes including glucose, phosphate, sodium, potassium, and uric acid was considered normal. Urinary calculi composed of cystine were found in four wolves and proved fatal in three of them. With the exception of the high incidence in this species, this hereditary disease resembles the disorder described in dogs and humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bovee, K C -- Bush, M -- Dietz, J -- Jezyk, P -- Segal, S -- AM 10894/AM/NIADDK NIH HHS/ -- GM 20138/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1981 May 22;212(4497):919-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233184" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acids/metabolism ; Animals ; Animals, Zoo/*urine ; Carnivora/*metabolism ; Cystine/metabolism ; Cystinuria/*veterinary ; Kidney/metabolism ; Kidney Tubules/metabolism
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  • 174
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    Reversal diabetes by islet transplantation: vulnerability of the established allograft (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-09-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bowen, K M -- Prowse, S J -- Lafferty, K J -- AM28126-01/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Sep 11;213(4513):1261-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6791285" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Ascitic Fluid/cytology ; Blood Glucose/metabolism ; Diabetes Mellitus, Experimental/*therapy ; *Graft Rejection ; Islets of Langerhans/immunology ; *Islets of Langerhans Transplantation ; Mice ; Organ Culture Techniques ; Transplantation, Homologous
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  • 175
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    Reduction in oocyte number following prenatal exposure to a diet high in galactose (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-12-04
    Description: When pregnant rats were fed a 50 percent galactose diet there was a striking reduction in oocyte number in the offspring. The most prominent effects were noted after exposure to galactose during the premeiotic stages of oogenesis. Prenatal exposure to galactose or its metabolites may contribute to the premature ovarian failure characteristic of human galactosemia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Y T -- Mattison, D R -- Feigenbaum, L -- Fukui, H -- Schulman, J D -- New York, N.Y. -- Science. 1981 Dec 4;214(4525):1145-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7302587" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dietary Carbohydrates/*physiology ; Female ; Fetus/drug effects/physiology ; Galactose/*pharmacology ; Maternal-Fetal Exchange ; Oocytes/drug effects/*physiology ; Ovum/*physiology ; Pregnancy ; Rats ; Rats, Inbred Strains
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  • 176
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    Conversion of 3T3-L1 fibroblasts to fat cells by an inhibitor of methylation: effect of 3-deazaadenosine (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-03-13
    Description: 3-Deazaadenosine, an inhibitor of methylation, increased the frequency of conversion of 3T3-L1 fibroblasts to fat cells in a dose-dependent manner. Once converted, the 3T3-L1 fat cells retained their adipose morphology and accumulated triglycerides even when 3-deazaadenosine was removed from the culture medium. 3-Deazaadenosine may perturb cellular methylation and thereby lead to an increase in the frequency of differentiation of 3T3-L1 fibroblasts to fat cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chiang, P K -- New York, N.Y. -- Science. 1981 Mar 13;211(4487):1164-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7466386" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/*cytology ; Animals ; Carnitine/pharmacology ; Cell Differentiation/*drug effects ; Cells, Cultured ; Dose-Response Relationship, Drug ; Fibroblasts/cytology ; Methylation ; Mice ; Ribonucleosides/*pharmacology ; Tubercidin/*pharmacology
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  • 177
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    Calcium-induced cell death: susceptibility of cardiac myocytes is age-dependent (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-09-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chizzonite, R A -- Zak, R -- HL-07381/HL/NHLBI NIH HHS/ -- HL-16637/HL/NHLBI NIH HHS/ -- HL-20592/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1981 Sep 25;213(4515):1508-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7280671" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Animals ; Animals, Newborn/physiology ; Calcium/metabolism/*pharmacology ; Cell Survival/*drug effects ; Creatine Kinase/metabolism ; Heart/*drug effects ; In Vitro Techniques ; Myocardial Contraction/drug effects ; Myocardium/*metabolism ; Rats ; Sarcolemma/drug effects ; Sarcoplasmic Reticulum/drug effects
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  • 178
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    Tyrosine increases blood pressure in hypotensive rats (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-01
    Description: Administration of tyrosine, the amino acid precursor of catecholamines, increased blood pressure 38 to 49 percent in rats made acutely hypotensive by hemorrhage; other large neutral amino acids were ineffective. Tyrosine's effect was abolished by adrenalectomy, suggesting that, in hypotensive animals, it acts by accelerating the peripheral synthesis and release of catecholamines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Conlay, L A -- Maher, T J -- Wurtman, R J -- AM-14228/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 May 1;212(4494):559-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7209553" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenalectomy ; Animals ; Blood Pressure/*drug effects ; Catecholamines/metabolism ; Disease Models, Animal ; Hypotension/*drug therapy/physiopathology ; Male ; Rats ; Tyrosine/*pharmacology/therapeutic use
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  • 179
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    Active ion transport in dog tongue: a possible role in taste (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-11-27
    Description: An in vitro preparation of the dorsal epithelium of the dog tongue actively transports ions, producing a transepithelial potential difference characteristic of the ions and their concentration. Hypertonic sodium chloride solutions generally cause increased potentials and short-circuit currents and reduced resistances when placed on the mucosal surface. This hypertonic flux is eliminated by ouabain and is not found in ventral lingual epithelia. When either sodium acetate or tetramethylammonium chloride is substituted for sodium chloride in the mucosal medium, the currents are diminished but their sum at a given concentration approximates that for sodium chloride at the same concentration. This result suggests a current composed of inward sodium ion movement and outward chloride ion movement. Actively regulated potentials and currents, whether generated in the taste buds or in supporting cells, may be important in both normal chemotransduction and in taste responses evoked by currents passing through the tongue.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DeSimone, J A -- Heck, G L -- DeSimone, S K -- NS13767/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 Nov 27;214(4524):1039-41.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7302576" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Transport, Active/drug effects ; Chlorides/*metabolism ; Dogs ; Epithelium/physiology ; Membrane Potentials/drug effects ; Ouabain/pharmacology ; Sodium/*metabolism ; Sodium Chloride/*pharmacology ; *Taste ; Tongue/drug effects/*physiology
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  • 180
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    Behavioral effects of lead and Toxocara canis in mice (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-09-04
    Description: Adult mice were administered the common parasite Toxocara canis or lead or both. The parasite clearly altered mouse performance on tests of exploration, activity, learning, and motor coordination; behavioral effects in mice receiving lead alone were less general. Consequence of Toxocara administration appeared attenuated in animals receiving both agents. Parasite larvae were found in the central nervous system in all infected mice.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dolinsky, Z S -- Burright, R G -- Donovick, P J -- Glickman, L T -- Babish, J -- Summers, B -- Cypess, R H -- 08-K4AI00301A-03/AI/NIAID NIH HHS/ -- 08R1AI1478A-03/AI/NIAID NIH HHS/ -- 5S07RR0749-04/RR/NCRR NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 Sep 4;213(4512):1142-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7268424" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Ascariasis/*complications ; Behavior, Animal/*physiology ; Brain/parasitology ; Disease Models, Animal ; Lead Poisoning/*complications/physiopathology ; Male ; Mice ; Toxocariasis/*complications/physiopathology
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  • 181
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    Male vole urine changes luteinizing hormone-releasing hormone and norepinephrine in female olfactory bulb (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-01
    Description: Female prairie voles (Microtus ochrogaster) exposed to a single drop of male urine on the upper lip showed changes in concentrations of luteinizing hormone-releasing hormone (LHRH) and norepinephrine in olfactory bulb tissue; no such changes occurred in dopamine concentration. The changes were measured in the posterior but not the anterior olfactory bulb tissue of females within 1 hour after they were exposed to urine. These females also showed rapid increases in serum concentrations of luteinizing hormone. Females exposed to water on the upper lip showed none of these changes. These results suggest that in this species LHRH and norepinephrine in the olfactory bulb may mediate luteinizing hormone release in response to external (pheromonal) chemical cues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dluzen, D E -- Ramirez, V D -- Carter, C S -- Getz, L L -- HDO9328/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1981 May 1;212(4494):573-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7010608" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arvicolinae/*physiology ; Estrus ; Female ; Gonadotropin-Releasing Hormone/*metabolism ; Humans ; Luteinizing Hormone/blood ; Male ; Norepinephrine/*metabolism ; Olfactory Bulb/*metabolism ; Pheromones/*urine ; Pregnancy ; Reproduction ; Rodentia/*physiology ; Stress, Psychological/physiopathology
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  • 182
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    Freeze-fracture cytochemistry: replicas of critical point-dried cells and tissues after fracture-label (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-07-10
    Description: Applications of the new fracture-labeling techniques for the observation of cytochemical labels on platinum-carbon replicas are described. Frozen cells, embedded in a cross-linked protein matrix, and frozen tissues are fractured with a scalpel under liquid nitrogen, thawed, labeled, dehydrated by the critical point drying method, and replicated. This method allows direct, high-resolution, two-dimensional chemical and immunological characterization of the cellular membranes in situ, as well as detection of sites within cross-fractured cytoplasm and extracellular matrix.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉da Silva, P P -- Kachar, B -- Torrisi, M R -- Brown, C -- Parkison, C -- New York, N.Y. -- Science. 1981 Jul 10;213(4504):230-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244630" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens/analysis ; Cells/*ultrastructure ; Cytoplasmic Granules/ultrastructure ; Endoplasmic Reticulum/ultrastructure ; Erythrocytes/ultrastructure ; Freeze Fracturing/*methods ; Humans ; Indicators and Reagents ; Intracellular Membranes/ultrastructure ; Leukocytes/ultrastructure ; Microscopy, Electron/methods ; Pancreas/ultrastructure ; Pituitary Gland, Anterior/ultrastructure ; Platinum ; Rats
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  • 183
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    Delta9-tetrahydrocannabinol increase plasma testosterone concentrations in mice (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-07-31
    Description: Oral administration of delta 9-tetrahydrocannabinol had a biphasic effect on plasma testosterone concentrations in male mice, causing rapid sustained increases at low doses and subsequent decreases at higher doses. In hypophysectomized and intact mice receiving gonadotropins (human chorionic gonadotropin), treatment with delta 9-tetrahydrocannabinol maintained higher plasma testosterone concentrations. Thus, this cannabinoid may interact with gonadotropin and directly influence testicular steroidogenesis in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dalterio, S -- Bartke, A -- Mayfield, D -- 1R01 DA 02/DA/NIDA NIH HHS/ -- P 30 HD 10202/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 31;213(4507):581-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6264607" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chorionic Gonadotropin/pharmacology ; Dronabinol/*analogs & derivatives/pharmacology ; Hypophysectomy ; Kinetics ; Luteinizing Hormone/*blood ; Male ; Mice ; Testosterone/*blood
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  • 184
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    Cholecystokinin antibody injected in cerebral ventricles stimulates feeding in sheep (1981)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1981-05-08
    Description: The role of brain cholecystokinin peptides in satiety was further assessed by using antibody to cholecystokinin to reduce cholecystokinin activity in the cerebrospinal fluid of sheep. Food intakes were increased approximately 100 percent during the 2-hour continuous injection of antibody into the cerebrospinal fluid. This supports the hypothesis that, during feeding, cholecystokinin is released into the cerebrospinal fluid, which transports it to the receptors that elicit satiety.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Della-Fera, M A -- Baile, C A -- Schneider, B S -- Grinker, J A -- GM 02051/GM/NIGMS NIH HHS/ -- NS 06595/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1981 May 8;212(4495):687-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7221559" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/administration & dosage ; Antigen-Antibody Reactions ; Castration ; Cholecystokinin/cerebrospinal fluid/immunology/*physiology ; Feeding Behavior/*physiology ; Injections, Intraventricular ; Male ; Satiation/*physiology ; Sheep
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  • 185
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    Epithelial cell volume regulation: bicarbonate dependence (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-12-18
    Description: When Necturus gallbladder epithelial cells are osmotically shrunken, they rapidly return to their original volume despite the continued presence of a hypertonic bathing solution. This volume-regulatory process requires bicarbonate ions in the bathing solutions and is associated with the uptake of chloride ions. Volume-regulatory increase by epithelial cells in probable due to the parallel operation of sodium-hydrogen and chloride-bicarbonate exchangers in the apical cell membrane.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fisher, R S -- Persson, B E -- Spring, K R -- New York, N.Y. -- Science. 1981 Dec 18;214(4527):1357-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7313695" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bicarbonates/*pharmacology ; Cell Membrane Permeability ; Chlorides/physiology ; Epithelium/physiology ; Gallbladder/*physiology ; Membrane Potentials ; Necturus ; Sodium/physiology ; Water-Electrolyte Balance/*drug effects
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  • 186
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    A conjugate of alpha-amanitin and monoclonal immunoglobulin G to Thy 1.2 antigen is selectively toxic to T lymphoma cells (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-09-18
    Description: A covalent conjugate of an alpha-amanitin azo derivative and a monoclonal immunoglobulin G to the Thy 1.2 antigen on murine T lymphocytes was synthesized. The conjugate was 375- to 750-fold more inhibitory to murine T lymphoma S49.1 cells than the unconjugated derivative. At 0.7 X 10(-7) to 1.5 X 10(-7) M and at 4 X 10(-7) M amanitin equivalents, the conjugate inhibited protein synthesis in S49.1 cells by 50 percent and 80 to 96 percent, respectively. At these concentrations, mutant Thy l-deficient S49 cells and other murine lymphoma lacking Thy l altogether or carrying Thy 1.1 antigens were unaffected. This result demonstrated the potential for targeting amanitin to specific cell types.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, M T -- Preston, J F 3rd -- R01 CA 19043/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 Sep 18;213(4514):1385-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6115471" target="_blank"〉PubMed〈/a〉
    Keywords: Amanitins/*administration & dosage ; Amino Acids/metabolism ; Animals ; Antibodies/administration & dosage ; Antibodies, Monoclonal ; Antigens, Surface/*immunology ; Antigens, Thy-1 ; Cells, Cultured ; Clone Cells/immunology ; Hybrid Cells/immunology ; Immunoglobulin G/*administration & dosage ; Lymphoma/*drug therapy ; Membrane Proteins/*immunology ; Mice ; Neoplasms, Experimental/drug therapy ; T-Lymphocytes/drug effects
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  • 187
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    Industrial microbiology (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-11-27
    Description: Industrial microbiology has served humanity since prebiblical times, providing fermented beverages and foods to enhance the quality of life. The antibiotic era featured an explosion in the number of microbial products for medicine, nutrition, industry, and research. Revolutionary developments in molecular genetics are propelling the field into a new growth phase with promise of solutions to major world problems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Demain, A L -- New York, N.Y. -- Science. 1981 Nov 27;214(4524):987-95.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6946560" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Bacterial Agents/biosynthesis ; Bacteria/genetics/metabolism ; DNA, Recombinant ; Fermentation ; Food Supply ; *Genetic Engineering ; Humans ; *Industry ; *Microbiology ; Recombination, Genetic ; *Technology
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  • 188
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    Ethanol reveals novel mercury detoxification step in tissues (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-09-04
    Description: Volatile mercury was produced de novo by mouse tissue homogenates that contained mercuric ions. Ethanol stimulated the release of tissue mercury into the vapor phase, and the mechanism appears to be an inhibition of reoxidation of volatile mercury. Components responsible for mercury volatilization are heat-labile. The highest volatilizing activity in the liver is associated with the soluble fraction obtained after centrifugation at 105,000g.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dunn, J D -- Clarkson, T W -- Magos, L -- 01248/PHS HHS/ -- ES 01247/ES/NIEHS NIH HHS/ -- GM 07141/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 Sep 4;213(4512):1123-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7268418" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Compartmentation ; Cell-Free System ; Cysteine ; Ethanol/*pharmacology ; Gases ; *Inactivation, Metabolic ; Kidney/*metabolism ; Liver/*metabolism ; Mercury/*metabolism ; Mice ; Oxidation-Reduction
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  • 189
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    Modification of the discharge of vagal cardiac neurons during learned heart rate change (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-10-16
    Description: Visually conditioned heart rate change in the pigeon has been developed as a vertebrate model system for the cellular neurophysiological analysis of associative learning. In previous studies of the "final common path," it was shown that both the vagal and sympathetic cardiac innervations contribute to this response. The present experiments indicate that, prior to any behavioral training, the visual stimulus elicits a small decrease in the discharge of vagal cardiac neurons. During conditioning, this stimulus evokes a progressively greater decrease in discharge that parallels the acquisition of the conditioned cardioacceleration. In contrast, nonassociative control animals show habituation of the initial decrease in discharge. These data confirm the involvement of the vagal cardiac innervation in conditioned heart rate change, indicate that the vagal innervation acts synergistically with the sympathetic to produce cardioacceleration, and suggest that a short-latency pathway mediates the conditioned response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gold, M R -- Cohen, D H -- P01 NS 14620/NS/NINDS NIH HHS/ -- T32 HL07284/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1981 Oct 16;214(4518):345-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7280698" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Association Learning/*physiology ; Columbidae/physiology ; Conditioning (Psychology)/physiology ; Heart/*innervation ; Heart Rate ; Learning/*physiology ; Light ; Time Factors ; Vagus Nerve/*physiology ; Visual Pathways/physiology
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  • 190
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    Substance P activity in the bullfrog retina: localization and identification in several vertebrate species (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-29
    Description: Immunoreactive substance P is present in the bullfrog retina, possibly in two types of stratified amacrine cells, with their somas in the inner nuclear layer and their neuronal processes entering the inner plexiform layer and ramifying in sublayers 3 or 4 (or both). Occasionally, polygonal somas positive for substance P were found in the ganglion cell layer. Approximately 75 percent of the cell bodies positive for substance P and 65 percent of the radioimmunoassayable substance P were found in the superior half of the frog retina. On the basis of high-performance liquid chromatography, the immunoreactive substance P in the neural retina of the rat, monkey, or chick is similar to synthetic substance P, whereas this is not true of the immunoreactive substance P in the bullfrog or carp retina.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eskay, R L -- Furness, J F -- Long, R T -- New York, N.Y. -- Science. 1981 May 29;212(4498):1049-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6165081" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chickens ; Fluorescent Antibody Technique ; Macaca ; Rana catesbeiana ; Rats ; Retina/analysis/*cytology ; Species Specificity ; Substance P/*analysis
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  • 191
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    Endogenous opiates and fasting (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-09-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ettenberg, A -- Rogers, J -- Koob, G F -- Bloom, F E -- Deutsch, J A -- New York, N.Y. -- Science. 1981 Sep 11;213(4513):1282.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6267697" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenocorticotropic Hormone/physiology ; Animals ; Endorphins/*physiology ; *Fasting ; Pituitary Gland/physiology ; Rats
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  • 192
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    Exposure of newborn rats to pharmacologically active compounds may permanently alter carcinogen metabolism (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-02-13
    Description: Administration of phenobarbital to mother rats during early lactation causes long-term, perhaps permanent, alteration of hepatic microsomal mixed-function oxidase activity and aflatoxin B1 adduct formation in the adult male offspring. These findings suggest that perinatal exposure to pharmacologically active compounds may be a determinant of cancer risk.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Faris, R A -- Campbell, T C -- New York, N.Y. -- Science. 1981 Feb 13;211(4483):719-21.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7455708" target="_blank"〉PubMed〈/a〉
    Keywords: Aflatoxins/metabolism ; Animal Population Groups/*physiology ; Animals ; Animals, Suckling/*physiology ; Carcinogens/*metabolism ; Enzyme Induction/drug effects ; Ethylmorphine-N-Demethylase/metabolism ; Microsomes, Liver/metabolism ; Mixed Function Oxygenases/*metabolism ; Oxidoreductases/*metabolism ; Phenobarbital/pharmacology ; Rats
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  • 193
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    Remodeling of multiterminal innervation by nerve terminal sprouting in an identifiable lobster motoneuron (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-06-26
    Description: A single motoneuron provides multiterminal innervation to the limb accessory flexor muscle in lobster. Its nerve terminals and synapses relocate to more distal sites during primary development and growth beyond sexual maturity. This remodeling of multiterminal innervation occurs by sprouting of nerve terminals and synapses from preexisting ones.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Govind, C K -- Pearce, J -- New York, N.Y. -- Science. 1981 Jun 26;212(4502):1522-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233240" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/physiology ; Microscopy, Electron ; Motor Neurons/*physiology ; Muscles/*innervation ; Nephropidae ; Synapses/physiology/ultrastructure ; Synaptic Vesicles/physiology
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  • 194
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    Opiate antagonist improves neurologic recovery after spinal injury (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-01-30
    Description: The opiate antagonist naloxone has been used to treat cats subjected to cervical spinal trauma. In contrast to saline-treated controls, naloxone treatment significantly improved the hypotension observed after cervical spinal injury. More critically, naloxone therapy significantly improved neurologic recovery. These findings implicate endorphins in the pathophysiology of spinal cord injury and indicate that narcotic antagonists may have a therapeutic role in this condition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Faden, A I -- Jacobs, T P -- Holaday, J W -- New York, N.Y. -- Science. 1981 Jan 30;211(4481):493-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7455690" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Pressure/*drug effects ; Cats ; Disease Models, Animal ; Endorphins/antagonists & inhibitors ; Naloxone/pharmacology/*therapeutic use ; Spinal Cord/blood supply ; Spinal Cord Injuries/*drug therapy/physiopathology
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  • 195
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    Lateral diffusion of surface molecules in animal cells and tissues (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-08-21
    Description: When bound to cell surfaces, certain lectins such as concanavalin A induce a drop in the average diffusion coefficients (D) of a number of cell surface molecules. To find whether such anchorage modulation occurs naturally, D of surface antigens on different cell and tissue types were measured by fluorescence photobleaching recovery. Values for cells of the same tissue origin under different conditions of growth and association - in tissues, in small aggregates, and as isolated cells - varied by less than twofold when polyspecific monovalent antibodies to cell surface antigens were used, a range much less than the sixfold decrease in D observed after lectin-induced anchorage modulation. Thus, if reversible modulation of the diffusion rate is used naturally as a means of cell signaling, it must involve only a few kinds of surface receptors not detected by the antibodies used in this study. In certain tissues, however, a significant proportion of cells showed no apparent receptor mobility. This "all or none" modulation of lateral diffusion may reflect relatively long-lasting alterations in the states of a single cell type or differentiation among the cells of the particular tissue.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gall, W E -- Edelman, G M -- AI-09273/AI/NIAID NIH HHS/ -- AI-11378/AI/NIAID NIH HHS/ -- AM-04256/AM/NIADDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 Aug 21;213(4510):903-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7196087" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Surface/physiology ; Cell Adhesion ; Cell Division ; Cells, Cultured ; Chick Embryo ; Cytoskeleton/physiology ; Diffusion ; *Membrane Fluidity ; Mice
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  • 196
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    Blood-brain glucose transfer: repression in chronic hyperglycemia (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-10-23
    Description: Diabetic patients with increased plasma glucose concentrations may develop cerebral symptoms of hypoglycemia when their plasma glucose is rapidly lowered to normal concentrations. The symptoms may indicate insufficient transport of glucose from blood to brain. In rats with chronic hyperglycemia the maximum glucose transport capacity of the blood-brain barrier decreased from 400 to 290 micromoles per 100 grams per minute. When plasma glucose was lowered to normal values, the glucose transport rate into brain was 20 percent below normal. This suggests that repressive changes of the glucose transport mechanism occur in brain endothelial cells in response to increased plasma glucose.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gjedde, A -- Crone, C -- New York, N.Y. -- Science. 1981 Oct 23;214(4519):456-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7027439" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Transport ; *Blood-Brain Barrier ; Brain/blood supply ; Diabetes Mellitus, Experimental/metabolism ; Glucose/*metabolism ; Hyperglycemia/*metabolism ; Insulin/physiology ; Kinetics ; Rats ; Regional Blood Flow
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  • 197
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    Interferon action: RNA cleavage pattern of a (2'-5')oligoadenylate--dependent endonuclease (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-29
    Description: One of the mediators of interferon action is a latent endoribonuclease (ribonuclease L) that is activated by (2'-5')oligoadenylates. Among the homopolymers of the four common ribonucleotides, activated ribonuclease L degrades at an appreciable rate only polyuridylic acid. In two natural RNA's tested the most frequent ribonuclease L cleavages occur after UA, UG, and UU (A, adenine; U, uracil; and G, guanine) and much less frequent cleavages after CA and AC (C, cytosine).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Floyd-Smith, G -- Slattery, E -- Lengyel, P -- AI-12320/AI/NIAID NIH HHS/ -- CA-16038/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1981 May 29;212(4498):1030-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6165080" target="_blank"〉PubMed〈/a〉
    Keywords: Adenine Nucleotides/*pharmacology ; Animals ; Carcinoma, Ehrlich Tumor/enzymology ; *Endoribonucleases ; HeLa Cells/enzymology ; Humans ; Interferons/*pharmacology ; Mice ; Oligonucleotides/*pharmacology ; Oligoribonucleotides/*pharmacology ; Rna ; Ribonucleases/*metabolism ; Ribonucleotides/analysis ; Substrate Specificity
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  • 198
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    Parasitism and behavioral dominance among male mice (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-24
    Description: Infestations by the nematode Heligmosomoides polygyrus can prevent adult male mice from becoming behaviorally dominant. The effect is dose-dependent and is more likely to influence the development of dominance than to disrupt existing dominance relationships. Doses capable of exerting this effect are not lethal and do not affect weight.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Freeland, W J -- R03 MH 32090/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 24;213(4506):461-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7244643" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Dominance-Subordination ; Larva ; Male ; Mice ; Nematoda ; Nematode Infections/*psychology ; *Social Dominance
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  • 199
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    DDT-induced feminization of gull embryos (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-08-21
    Description: Injection of DDT [1, 1, 1-trichloro-2,2-bis(p-chlorophenyl)ethane] into gull eggs at concentrations comparable to those found in contaminated seabird eggs in 1970 induces abnormal development of ovarian tissue and oviducts in male embryos. Developmental feminization of males is associated with inability to breed as adults and may explain the highly skewed sex ratio and reduced number of male gulls breeding on Santa Barbara Island in southern California.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fry, D M -- Toone, C K -- New York, N.Y. -- Science. 1981 Aug 21;213(4510):922-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7256288" target="_blank"〉PubMed〈/a〉
    Keywords: Androgen-Insensitivity Syndrome/chemically induced/*veterinary ; Animals ; Bird Diseases/chemically induced ; Birds/*physiology ; DDT/*pharmacology ; Environmental Exposure ; Male ; Reproduction/*drug effects ; *Sex Ratio
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  • 200
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    Long-term stress-induced analgesia and activation of the opiate system (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-09-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grau, J W -- Hyson, R L -- Maier, S F -- Madden, J 4th -- Barchas, J D -- New York, N.Y. -- Science. 1981 Sep 18;213(4514):1409-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7268445" target="_blank"〉PubMed〈/a〉
    Keywords: Analgesia ; Animals ; Electroshock ; Endorphins/antagonists & inhibitors/*physiology ; Naltrexone/pharmacology ; Pain/*physiopathology ; Rats ; Stress, Physiological/*physiopathology ; Tail ; Time Factors
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