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  • Articles  (376)
  • Latest Papers from Table of Contents or Articles in Press  (376)
  • Rats  (254)
  • Base Sequence  (100)
  • Species Specificity  (41)
  • 2020-2022
  • 1980-1984  (376)
  • 1925-1929
  • 1984  (200)
  • 1980  (176)
Collection
  • Articles  (376)
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  • 2020-2022
  • 1980-1984  (376)
  • 1925-1929
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  • 1
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    Nucleic acid sequence bank (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-09-12
    Description: In the report by T. Kakunaga and J. D. Crow (25 July, p. 505), Fig. 1 on page 506 should have been printed as follows: [See figure in the PDF file]〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dayhoff, M O -- Schwartz, R M -- Chen, H R -- Hunt, L T -- Barker, W C -- Orcutt, B C -- New York, N.Y. -- Science. 1980 Sep 12;209(4462):1182.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7403878" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *Information Systems ; *Nucleic Acids
    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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  • 2
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    Immunofluorescence of NADPH-cytochrome c (P-450) reductase in rat and minipig tissues injected with phenobarbital (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-06-27
    Description: The enzyme NADPH-cytochrome c (P-450) reductase was identified by indirect immunofluorescence in hepatocytes, bronchioles, and proximal tubules of liver, lung, and kidney, respectively, of rats and minipigs that had been injected with phenobarbital or saline. The distribution of this component of the cytochrome P-450-mediated microsomal system may be relevant to sites of drug toxicity and carcinogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dees, J H -- Coe, L D -- Yasukochi, Y -- Masters, B S -- New York, N.Y. -- Science. 1980 Jun 27;208(4451):1473-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6770464" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Fluorescent Antibody Technique ; Kidney/drug effects/*enzymology ; Liver/drug effects/*enzymology ; Lung/drug effects/*enzymology ; Male ; NADPH-Ferrihemoprotein Reductase/*metabolism ; Organ Specificity ; Phenobarbital/*pharmacology ; Rats
    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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  • 3
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    L-Ornithine decarboxylase:an essential role in early mammalian embryogenesis (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-05-02
    Description: The highly selective, enzyme-activated, irreversible inhibitor of L-ornithine decarboxylase, DL-alpha-difluoromethylornithine, suppresses the increase in uterine L-ornithine decarboxylase activity associated with early embryogenesis in the mouse and arrests embryonic development at that stage. Contragestational effects were confirmed in the rat and rabbit. An increase in L-ornithine decarboxylase activity that leads to a rapid increase in putrescine concentration appears to be essential during a critical period after implantation for continued mammalian embryonal growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fozard, J R -- Part, M L -- Prakash, N J -- Grove, J -- Schechter, P J -- Sjoerdsma, A -- Koch-Weser, J -- New York, N.Y. -- Science. 1980 May 2;208(4443):505-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6768132" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosylmethionine Decarboxylase/metabolism ; Animals ; Carboxy-Lyases/*physiology ; Eflornithine ; Embryo, Mammalian/drug effects/*physiology ; Female ; Gestational Age ; Mice ; Ornithine/*analogs & derivatives/pharmacology ; Ornithine Decarboxylase/*physiology ; Ornithine Decarboxylase Inhibitors ; Polyamines/metabolism ; Pregnancy ; Rabbits ; Rats ; Uterus/drug effects/*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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  • 4
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    Bioactive conformation of luteinizing hormone-releasing hormone: evidence from a conformationally constrained analog (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-11-07
    Description: An analog of luteinizing hormone-releasing hormone containing a gamma-lactam as a conformational constraint has been prepared with the use of a novel cyclization of a methionine sulfonium salt. The analog is more active as a luteinizing hormone-releasing hormone agonist that the parent hormone, and provides evidence for a bioactive conformation containing a beta-turn.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Freidinger, R M -- Veber, D F -- Perlow, D S -- Brooks, J R -- Saperstein, R -- New York, N.Y. -- Science. 1980 Nov 7;210(4470):656-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7001627" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Biological Assay ; Cells, Cultured ; Female ; *Gonadotropin-Releasing Hormone/analogs & derivatives ; Hydrogen Bonding ; Lactams ; Protein Conformation ; Rats ; Structure-Activity Relationship
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Distribution of active gene sequences: a subset associated with tightly bound chromosomal proteins (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-02-08
    Description: The distribution of active polyadenylate-messenger RNA sequences in fractionated chicken liver chromatin was examined. A portion of these active gene sequences is concentrated in a DNA fraction retained by tightly bound nonhistone chromosomal proteins, while the nonretained DNA fraction is substantially depleted of a portion of these sequences. These findings suggest that the tightly bound nonhistones are physically associated with a subset of active gene sequences.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gates, D M -- Bekhor, I -- New York, N.Y. -- Science. 1980 Feb 8;207(4431):661-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7352280" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chickens ; Chromatin/ultrastructure ; Chromosomal Proteins, Non-Histone/*metabolism ; DNA/*metabolism ; *Genes ; Liver/*metabolism ; Nucleic Acid Hybridization ; Protein Binding ; RNA, Messenger/genetics ; Sodium Chloride
    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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  • 6
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    Widespread occurrence in frogs and toads of skin compounds interacting with the ouabain site of Na+, K+-ATPase (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-05-02
    Description: Amphibians of the family Bufonidae contain high levels of skin compounds that both inhibit Na+- and K+-dependent adenosinetriphosphatase and antagonize the binding of ouabain to the enzyme. In species of Bufo and Atelopus, these compounds are relatively nonpolar bufodienolides, whereas Dendrophryniscus and Melanophryniscus contain more polar compounds of unknown structure. Skin extracts from 30 of 48 species of frogs representing an additional eight families contained relatively low levels of compounds that inhibit binding of ouabain to Na+,K+-adenosinetriphosphatase. The widespread occurrence of low levels of inhibitory compounds is consonant with the role for these compounds as physiological regulators of Na+,K+-adenosinetriphosphatase in amphibian skin; high levels in the Bufonidae probably also serve as a defense against some predators.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Flier, J -- Edwards, M W -- Daly, J W -- Myers, C W -- New York, N.Y. -- Science. 1980 May 2;208(4443):503-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6245447" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anura/*metabolism ; Binding Sites ; Bufanolides/pharmacology ; Ouabain/antagonists & inhibitors/*metabolism ; Skin/analysis/enzymology/*metabolism ; Sodium-Potassium-Exchanging ATPase/*metabolism ; Species Specificity ; Tissue Extracts/pharmacology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Reorganization of the axon membrane in demyelinated peripheral nerve fibers: morphological evidence (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-11-07
    Description: Cytochemical staining of demyelinated peripheral axons revealed two types of axon membrane organization, one of which suggests that the demyelinated axolemma acquires a high density of sodium channels. Ferric ion-ferrocyanide stain was confined to a restricted region of axon membrane at the beginning of a demyelinated segment or was distributed throughout the demyelinated segment of axon. The latter pattern represents one possible morphological correlate of continuous conduction through a demyelinated segment and suggests a reorganization of the axolemma after demyelination.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Foster, R E -- Whalen, C C -- Waxman, S G -- NS-15320/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1980 Nov 7;210(4470):661-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6159685" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Demyelinating Diseases/metabolism/*pathology ; Disease Models, Animal ; Ion Channels/*metabolism ; Male ; Neural Conduction ; Neurilemma/*metabolism/pathology ; Rats ; Staining and Labeling
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  • 8
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    The phylogeny of prokaryotes (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-07-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fox, G E -- Stackebrandt, E -- Hespell, R B -- Gibson, J -- Maniloff, J -- Dyer, T A -- Wolfe, R S -- Balch, W E -- Tanner, R S -- Magrum, L J -- Zablen, L B -- Blakemore, R -- Gupta, R -- Bonen, L -- Lewis, B J -- Stahl, D A -- Luehrsen, K R -- Chen, K N -- Woese, C R -- New York, N.Y. -- Science. 1980 Jul 25;209(4455):457-63.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6771870" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteria/*classification ; Base Sequence ; Biological Evolution ; Chloroplasts/analysis ; Clostridium/classification ; Cyanobacteria/classification ; DNA/analysis ; *Phylogeny ; RNA, Ribosomal/*analysis ; Species Specificity
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  • 9
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    Doridosine: a new hypotensive N-methylpurine riboside from the nudibranch Anisodoris nobilis (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-01-11
    Description: A new N-methylpurine riboside (doridosine), probably N1-Methylisoguanosine, was isolated from the digestive glands of a nudibranch. Doridosine produces prolonged hypotension and bradycardia in anesthetized rats, decreases the rate and the amplitude of contraction of guinea pig atria in vitro, and causes the heart rate in anesthetized mice to be reduced by 50 percent for many hours after which the animals recover completely.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fuhrman, F A -- Fuhrman, G J -- Kim, Y H -- Pavelka, L A -- Mosher, H S -- New York, N.Y. -- Science. 1980 Jan 11;207(4427):193-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7350655" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antihypertensive Agents/*isolation & purification ; Guanosine/*analogs & derivatives/isolation & purification/pharmacology ; Guinea Pigs ; Heart Rate/drug effects ; Mice ; Mollusca/analysis ; Rats
    Print ISSN: 0036-8075
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  • 10
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    DNA polymerases in parasitic protozoans differ from host enzymes (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-05-02
    Description: Analysis of extracts of the bloodstream forms of Trypanosoma brucei showed that both DNA polymerase-alpha and DNA polymerase-beta activities were present. The detection of DNA polymerase-beta in T. brucei demonstrates the presence of this enzyme in unicellular organisms. DNA polymerase-beta is present also in Leishmania mexicana. The DNA polymerases in T. brucei are immunologically distinct from the host enzymes. The structural differences between the parasite and the host enzymes could be exploited for the development of agents to combat parasitic diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chang, L M -- Cheriathundam, E -- Mahoney, E M -- Cerami, A -- New York, N.Y. -- Science. 1980 May 2;208(4443):510-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7367875" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Centrifugation, Density Gradient ; Chickens ; DNA Polymerase I/analysis ; DNA Polymerase II/analysis ; DNA Polymerase III/analysis ; DNA-Directed DNA Polymerase/*analysis ; Fishes ; Immune Sera ; Leishmania/*enzymology ; Molecular Weight ; Rabbits ; Rats ; Species Specificity ; Trypanosoma brucei brucei/*enzymology
    Print ISSN: 0036-8075
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  • 11
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    Oral contraceptives, lanosterol, and platelet hyperactivity in rat (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-11-07
    Description: Lanosterol, a cholesterol precursor that increases considerably in the platelets of rats treated with oral contraceptives, was incubated with either platelet-rich plasma or washed platelet suspension. After 2 minutes there was a remarkable dose-related increase in platelet activity. This platelet hyperactivity was measured by clotting time and platelet aggregation could not be reproduced by cholesterol or ethinylestradiol.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ciavatti, M -- Dumont, E -- Benoit, C -- Renaud, S -- New York, N.Y. -- Science. 1980 Nov 7;210(4470):642-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7433990" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Coagulation/*drug effects ; Blood Platelets/*drug effects ; Contraceptives, Oral/*pharmacology ; Dose-Response Relationship, Drug ; Female ; Lanosterol/*pharmacology ; Platelet Aggregation/*drug effects ; Rats
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  • 12
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    Neurochemical and behavioral evidence for a selective presynaptic dopamine receptor agonist (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-12-05
    Description: A new dopamine analog, 6,7-dihydroxy-2-dimethylaminotetralin (TL-99), was compared to apomorphine in three tests of dopaminergic function in the central nervous system. The tests, performed on rats, included production of changes in locomotor activity (involving both presynaptic and postsynaptic receptors), inhibition of dopa accumulation (quantifying presynaptic receptor activity), and the rotation model (quantifying postsynaptic receptor activation). Apomorphine was efficacious at both presynaptic and postsynaptic receptors, whereas TL-99 was much more efficacious at the presynaptic receptor. This result indicates not only that differences exist between presynaptic and postsynaptic dopamine receptors, but also that these differences may be exploited in the design of selective dopamine agonists.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goodale, D P -- Rusterholz, D B -- Long, J P -- Flynn, J R -- Walsh, B -- Cannon, J G -- Lee, T -- GM 12675/GM/NIGMS NIH HHS/ -- GM-22365/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1980 Dec 5;210(4474):1141-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7444443" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apomorphine/pharmacology ; Behavior, Animal/drug effects ; Brain/*drug effects ; Levodopa/metabolism ; Motor Activity/drug effects ; Naphthols ; Rats ; Receptors, Dopamine/*drug effects ; Synaptic Membranes/*drug effects ; *Tetrahydronaphthalenes
    Print ISSN: 0036-8075
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  • 13
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    Immunohistochemical localization of amelogenins in enameloid of lower vertebrate teeth (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-03-21
    Description: The indirect method of immunofluorescence was used to demonstrate the presence of amelogenins in the enameloid of teeth and dermal denticles of Chondrichthyes; in the enameloid of Teleostei and Amphibia; and in the enamel of Reptilia. Nonmammalian amelogenins are formed in the ectodermal cells of tooth organs and chemically are so similar to mammalian amelogenins that they interact with antiserum prepared from bovine enamel matrix.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Herold, R C -- Graver, H T -- Christner, P -- New York, N.Y. -- Science. 1980 Mar 21;207(4437):1357-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6986656" target="_blank"〉PubMed〈/a〉
    Keywords: Amelogenesis ; Animals ; Dental Enamel Proteins/immunology/*metabolism ; Fluorescent Antibody Technique ; Species Specificity ; Tooth/*anatomy & histology ; Vertebrates/*anatomy & histology
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  • 14
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    Phospholipid methylation and biological signal transmission (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-09-05
    Description: Many types of cells methylate phospholipids using two methyltransferase enzymes that are asymmetrically distributed in membranes. As the phospholipids are successively methylated, they are translocated from the inside to the outside of the membrane. When catecholamine neurotransmitters, lectins, immunoglobulins or chemotaxic peptides bind to the cell surface, they stimulate the methyltransferase enzymes and reduce membrane viscosity. The methylation of phospholipids is coupled to Ca2+ influx and the release of arachidonic acid, lysophosphatidylcholine, and prostaglandins. These closely associated biochemical changes facilitate the transmission of many signals through membranes, resulting in the generation of adenosine 3',5'-monophophate in many cell types, release of histamine in mast cells and basophils, mitogenesis in lymphocytes, and chemotaxis in neutrophils.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hirata, F -- Axelrod, J -- New York, N.Y. -- Science. 1980 Sep 5;209(4461):1082-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6157192" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenal Medulla/metabolism ; Animals ; Arachidonic Acids/metabolism ; Calcium/metabolism ; Cell Membrane/metabolism ; Chemotaxis, Leukocyte ; Histamine Release ; Lymphocyte Activation ; *Membrane Fluidity ; Membrane Lipids/*metabolism ; Methylation ; Phosphatidylcholines/metabolism ; Phosphatidylethanolamines/metabolism ; Phospholipids/*metabolism ; Rats ; Receptors, Adrenergic, beta/metabolism ; Receptors, Drug/*physiology ; S-Adenosylmethionine/metabolism
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  • 15
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    Antibodies to cerebroside sulfate inhibit the effects of morphine and beta-endorphin (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-01-04
    Description: Morphine and beta-endorphin inhibit the shaking response of pentobarbital-anesthetized rats to ice water. Stereotaxically guided administration of antibodies to cerebroside sulfate into the periaqueductal gray region, the most sensitive brain region in which to demonstrate inhibition of this response, antagonizes the effect of morphine and beta-endorphin. These results suggest that cerebroside sulfate may be an integral component of an opiate receptor in rat brain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Craves, F B -- Zalc, B -- Leybin, L -- Baumann, N -- Loh, H H -- New York, N.Y. -- Science. 1980 Jan 4;207(4426):75-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6243189" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen-Antibody Reactions ; Behavior, Animal/drug effects ; Biological Assay ; Brain/*immunology ; Cerebral Aqueduct ; Endorphins/*antagonists & inhibitors ; Male ; Morphine/*antagonists & inhibitors ; Pentobarbital/pharmacology ; Rats ; Receptors, Opioid/*immunology ; Sulfoglycosphingolipids/*immunology
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  • 16
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    Photosynthesis of previtamin D3 in human skin and the physiologic consequences (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-10-10
    Description: Photosynthesis of previtamin D3 can occur throughout the epidermis in the dermis when hypopigmented Caucasian skin is exposed to solar ultraviolet radiation. Once previtamin D3 is formed in the skin, it undergoes a temperature-dependent thermal isomerization that takes at least 3 days to complete. The vitamin D-binding protein preferentially translocates the thermal product, vitamin D3, into the circulation. These processes suggest a unique mechanism for the synthesis, storage, and slow, steady release of vitamin D3 from the skin into the circulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holick, M F -- MacLaughlin, J A -- Clark, M B -- Holick, S A -- Potts, J T Jr -- Anderson, R R -- Blank, I H -- Parrish, J A -- Elias, P -- AM25395-01/AM/NIADDK NIH HHS/ -- AM27334-01/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1980 Oct 10;210(4466):203-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6251551" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carrier Proteins/metabolism ; Cholecalciferol/*biosynthesis ; Cholestadienols/*biosynthesis ; Dose-Response Relationship, Radiation ; Hot Temperature ; Humans ; Isomerism ; Photochemistry ; Rats ; Skin/cytology/*metabolism ; Ultraviolet Rays ; Vitamin D/metabolism ; Vitamin D-Binding Protein
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  • 17
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    Excitatory and inhibitory effects of opiates in the rat vas deferens: a dual mechanism of opiate action (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-10-03
    Description: Both natural (-)-morphine and its unnatural enantiomer (+)-morphine exert an excitatory action on electrically stimulated contractions of rat vas deferens. Preexposure to (-)-morphine results in cross-tolerance to the inhibitory action of beta-endorphin. (-)-Naloxone and its stereoisomer (+)-naloxone also exert an excitatory action, but only (-)-naloxone bocks the inhibtory action of beta-endorphin. Thus morphine exerts a dual action on a peripheral organ: one an inhibitory action mediated by the stereospecific endorphin receptor that is blocked stereospecifically by naloxone, the other an excitatory action mediated by a nonstereospecific receptor that is not blocked by naloxone. The opiate abstinence syndrome is seen as due to the unmasking of the excitatory action of opiates when its concomitant inhibitory influence is removed by selective blockade by naloxone or weakened by selective tolerance. The view that the rat vas deferens is devoid of morphine receptors is now seen as arising from a reverse example of morphine's dual action: the masking of the inhibitory action of morphine by its concomitant and more potent excitatory action.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jacquet, Y F -- DA 00367/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1980 Oct 3;210(4465):95-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6158098" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Drug Interactions ; Endorphins/pharmacology ; Male ; Morphine/antagonists & inhibitors/pharmacology ; Muscle Contraction/drug effects ; Naloxone/pharmacology ; Narcotics/*pharmacology ; Rats ; Receptors, Opioid/drug effects ; Stereoisomerism ; Substance P/pharmacology ; Vas Deferens/*drug effects
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    Insulin receptors: differences in structural organization on adipocyte and liver plasma membranes (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-12-05
    Description: Comparison was made of the distribution of the insulin receptor sites on adipocyte and liver plasma membranes by using ferritin-insulin. Two-thirds of the occupied insulin receptors on adipocytes occurred in groups of two or more whereas up to two-thirds of the receptors on liver occurred as single receptors. Ferritin-insulin did not cause aggregation of the receptor sites in either tissue. The naturally occurring groups of receptors on adipocyte membranes may play a role in the greater sensitivity of adipocytes to insulin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jarett, L -- Schweitzer, J B -- Smith, R M -- AM 20097/AM/NIADDK NIH HHS/ -- T32 AM 07296/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1980 Dec 5;210(4474):1127-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7003710" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/*ultrastructure ; Animals ; Cell Membrane/ultrastructure ; Insulin/metabolism ; Liver/*ultrastructure ; Macromolecular Substances ; Membrane Fluidity ; Oxidation-Reduction ; Protein Binding ; Rats ; *Receptor, Insulin/metabolism ; Sulfhydryl Compounds
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  • 19
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    Dorsal root ganglion neurons are destroyed by exposure in utero to maternal antibody to nerve growth factor (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-11-21
    Description: Rats and guinea pigs, when immunized with mouse nerve growth factor, produce antibodies that cross-react with their own nerve growth factor. The antibodies reach developing offspring of these animals both prenatally (rats and guinea pigs) and postnatally (rats). Depriving the fetus of nerve growth factor in this way results in the destruction of up to 85 percent of dorsal root ganglion neurons as well as destruction of sympathetic neurons. Sensory neurons of placodal origin in the nodose ganglion were not affected. These data demonstrate that dorsal root ganglion neurons go through a phase of nerve growth factor dependence in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Johnson, E M Jr -- Gorin, P D -- Brandeis, L D -- Pearson, J -- HD12260/HD/NICHD NIH HHS/ -- HL20604/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1980 Nov 21;210(4472):916-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7192014" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibodies ; Female ; Ganglia, Spinal/cytology/*embryology/growth & development ; Guinea Pigs ; Lactation ; Maternal-Fetal Exchange ; Milk/immunology ; Nerve Growth Factors/*immunology ; Pregnancy ; Rats
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  • 20
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    Maternal glucocorticoid hormones influence neurotransmitter phenotypic expression in embryos (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-10-31
    Description: Treatment of pregnant rats with reserpine prevented the normal disappearance of catecholamine fluorescence in presumptive neuroblasts of the embryonic gut. These cells normally express the noradrenergic phenotype transiently during embryonic development. The effect of reserpine was reproduced by treating mothers with hydrocortisone acetate. Moreover, the reserpine effect was blocked by treatment with dexamethasone, which inhibits the stress-induced increase in plasma glucocorticoids, and by mitotone, which causes adrenocortical cytolysis. It is concluded that reserpine, through the mediation of maternal glucocorticoid hormones, alters the phenotypic expression of these embryonic neuroblasts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jonakait, G M -- Bohn, M C -- Black, I B -- HD 12108/HD/NICHD NIH HHS/ -- NS 06400/NS/NINDS NIH HHS/ -- NS 10259/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1980 Oct 31;210(4469):551-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7423206" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Catecholamines/metabolism ; Female ; Hydrocortisone/*pharmacology ; Intestines/*embryology/innervation ; Maternal-Fetal Exchange ; Pregnancy ; Pregnancy, Animal/*drug effects ; Rats ; Reserpine/*pharmacology ; Sympathetic Nervous System/*embryology
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  • 21
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    Swim bladder volume maintenance related to initial oceanic migratory depth in silver-phase Anguilla rostrata (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-06-27
    Description: Gas deposition rates in the swim bladders of postmetamorphic (silver) Anguilla rostrata eels are about five times greater than those of premetamorphic (yellow) individuals. This extends the maximum depth at which silver eels can maintain swim bladder volume and prepares them for their spawning migration to the Sargasso Sea.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kleckner, R C -- New York, N.Y. -- Science. 1980 Jun 27;208(4451):1481-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7384792" target="_blank"〉PubMed〈/a〉
    Keywords: Acclimatization ; Air Sacs/*physiology ; Anguilla/*physiology ; Animals ; Species Specificity
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    The 1980 Nobel Prize in Chemistry (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-11-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolata, G B -- New York, N.Y. -- Science. 1980 Nov 21;210(4472):887-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7001629" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Chemistry/history ; DNA/genetics ; DNA, Recombinant ; History, 20th Century ; Molecular Biology/*history ; *Nobel Prize
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    Visualization of specific angiotensin II binding sites in the brain by fluorescent microscopy (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-11-14
    Description: The organum vasculosum of the lamina terminalis has been implicated as the site of receptors mediating central responses of angiotensin II. Up to now, this had been based on indirect evidence, but direct visualization of angiotensin II at its site of action has now been achieved by the use of a biologically active fluorescent angiotensin II agonist. The ventricular surface of the organum vasculosum lamina terminalis showed intense fluorescence, which was virtually eliminated by an excess of unlabeled angiotensin II.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Landas, S -- Phillips, M I -- Stamler, J F -- Raizada, M K -- AM25295/AM/NIADDK NIH HHS/ -- HL14388/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1980 Nov 14;210(4471):791-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6254147" target="_blank"〉PubMed〈/a〉
    Keywords: Angiotensin II/*metabolism/physiology ; Animals ; Cerebral Ventricles/*metabolism ; Drinking Behavior/physiology ; Male ; Microscopy, Fluorescence ; Rats ; Receptors, Angiotensin/*metabolism ; Receptors, Cell Surface/*metabolism
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  • 24
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    Prolongation of islet xenograft survival without continuous immunosuppression (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-07-11
    Description: The survival of isolated rat islets transplanted into diabetic mice was prolonged markedly by maintaining the rat islets in vitro at 24 degrees C for 7 days before transplantation and administering to the recipients a single injection of antiserum to mouse and rat lymphocytes shortly before transplantation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lacy, P E -- Davie, J M -- Finke, E H -- New York, N.Y. -- Science. 1980 Jul 11;209(4453):283-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6770465" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Glucose/analysis ; Cell Survival ; Cells, Cultured ; Diabetes Mellitus, Experimental/*therapy ; *Immunosuppression ; *Islets of Langerhans Transplantation ; Lymphocytes/immunology ; Male ; Mice ; Mice, Inbred BALB C ; Rats ; Transplantation, Heterologous ; Transplantation, Isogeneic
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    Microencapsulated islets as bioartificial endocrine pancreas (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-11-21
    Description: Single implantation of microencapsulated islets into rats with streptozotocin-induced diabetes corrected the diabetic state for 2 to 3 weeks. The microencapsulated islets remained morphologically and functionally intact throughout long-term culture studies lasting over 15 weeks.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lim, F -- Sun, A M -- New York, N.Y. -- Science. 1980 Nov 21;210(4472):908-10.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6776628" target="_blank"〉PubMed〈/a〉
    Keywords: Alginates/*therapeutic use ; Animals ; Cell Survival ; Diabetes Mellitus, Experimental/*therapy ; *Islets of Langerhans Transplantation ; Permeability ; Rats ; Transplantation, Homologous
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  • 26
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    Liver tumors induced in rats by oral administration of the antihistaminic methapyrilene hydrochloride (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-08-15
    Description: The antihistaminic over-the-counter drug methapyrilene hydrochloride, mixed with food at a concentration of 0.1 percent, was administered to 50 male and 50 female Fischer rats. A second group of 50 male and 50 female rats was given the same treatment together with 0.2 percent of sodium nitrite added to the food. Almost all of the rats in both groups developed liver neoplasms, mainly hepatocellular carcinomas and cholangiocarcinomas. The first rat died with a liver neoplasm at the 43rd week. Over 50 percent of the rats in both groups had metastases from the carcinomas of the liver to distant organs. Control rats treated with nitrite only, or untreated, did not develop liver neoplasms. There was no discernible effect of nitrite on the carcinogenicity of methapyrilene hydrochloride.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lijinsky, W -- Reuber, M D -- Blackwell, B N -- New York, N.Y. -- Science. 1980 Aug 15;209(4458):817-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7403848" target="_blank"〉PubMed〈/a〉
    Keywords: Aminopyridines/*toxicity ; Animals ; *Carcinogens ; Drug Interactions ; Female ; Liver Neoplasms, Experimental/*chemically induced/pathology ; Male ; Methapyrilene/*toxicity ; Neoplasm Metastasis ; Nitrites ; Rats
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    Mutagenic activity in photocopies (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-08-29
    Description: Extracts from several different photocopies were mutagenic in the Ames Salmonella assay. The mutagenic behavior was similar for extracts from copies and corresponding toners indicating that toners are directly responsible for the mutagenicity. The mutagenicity is caused by at least two classes of compounds which may be present either alone or in combination in any toner.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lofroth, G -- Hefner, E -- Alfheim, I -- Mooller, M -- New York, N.Y. -- Science. 1980 Aug 29;209(4460):1037-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6996094" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biotransformation ; Carbon ; *Copying Processes ; Drug Evaluation, Preclinical/methods ; Microsomes, Liver/metabolism ; *Mutagens ; Photography ; Pyrenes/adverse effects ; Rats ; Salmonella typhimurium/drug effects
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    Sexual dimorphism in extent of axonal sprouting in rat hippocampus (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-06-13
    Description: Sympathetic axons, normally innervating the extracerebral vasculature, sprout into denervated regions of the hippocampal formation after lesions of the medial septal nucleus or fimbria in adult female rats. Similar lesions in adult males also elicit the sympathetic ingrowth; however, the number of anomalous axons is greatly reduced and their distribution is altered. In adult males the sympathetic axons do not send out collaterals within the stratum oriens of region CA3 or the molecular layer or deep hilar regions of the area dentata, as they do in adult females. Lesions in juveniles of both sexes result in more vigorous sprouting than in their adult counterparts. In the young males the anomalous axons are distributed more extensively into the dentate molecular layer; in the young females the axons merely send out more collaterals within the same regions as in the adults. This sexually dimorphic response to central nervous system damage suggests either that the sprouting is affected by the hormonal environment of the mature hippocampal system or that this brain region, like the hypothalamus, may express permanent morphological or physiological differences as a result of exposure to sex steroids during development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Loy, R -- Milner, T A -- New York, N.Y. -- Science. 1980 Jun 13;208(4449):1282-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7375941" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; Axons/growth & development ; Denervation ; Female ; Gonadal Steroid Hormones/physiology ; Hippocampus/*cytology ; Male ; Neural Pathways/cytology ; Rats ; *Sex ; Sympathetic Nervous System/*cytology/growth & development
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    Ornithine decarboxylase is important in intestinal mucosal maturation and recovery from injury in rats (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-10-10
    Description: A transient increase in ornithine decarboxylase activity and polyamine biosynthesis occurs in the intestinal mucosa of the newborn rat in the third week after birth. During this period, there is a rapid conversion of the mucosa from a fetal to a mature adult status. A similar increase in ornithine decarboxylase activity also accompanies the rapid recovery of the mucosa 1 week after an injury is induced by chemotherapy in adult rats. In vivo, alpha-difluoromethyl ornithine, a highly selective, enzyme-activated, irreversible inhibitor, suppresses these increases in mucosal ornithine decarboxylase and delays both intestinal mucosal maturation and recovery from injury. Thus increased ornithine decarboxylase activity, with the resultant increase in polyamine content, may play an essential role in intestinal mucosal maturation and regeneration in the rat.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lux, G D -- Marton, L J -- Baylin, S B -- 5-R01-18404/PHS HHS/ -- 5-T32-AM-07192-03/AM/NIADDK NIH HHS/ -- P50-HL-19157-01/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1980 Oct 10;210(4466):195-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6774420" target="_blank"〉PubMed〈/a〉
    Keywords: Amine Oxidase (Copper-Containing)/metabolism ; Animals ; Carboxy-Lyases/*physiology ; Cell Differentiation ; Cell Division ; Cytarabine/pharmacology ; Intestinal Mucosa/cytology/drug effects/*physiology ; Ornithine Decarboxylase/*physiology ; Ornithine Decarboxylase Inhibitors ; Putrescine/metabolism ; Rats ; Spermidine/metabolism ; Wound Healing
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    Phenacetin safety (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-01-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Macklin, A W -- Welch, R M -- New York, N.Y. -- Science. 1980 Jan 11;207(4427):129-30, 132.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7350647" target="_blank"〉PubMed〈/a〉
    Keywords: Aminopyrine/adverse effects/toxicity ; Animals ; Humans ; Mice ; Mutagens ; Phenacetin/administration & dosage/*adverse effects/toxicity ; Rats
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    Local effect of the blastocyst on estrogen and progesterone receptors in the rat endometrium (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-03-07
    Description: Nuclear receptors for both estradiol and progesterone were present in twofold higher concentrations in implantation sites than in nonimplantation regions of the endometrium of 6-day pregnant rats. Decidualization in the absence of an embryo was not accompanied by a similar increase in the concentration of nuclear receptors. Moreover, this difference in receptor distribution between the implantation and nonimplantation areas persisted when a major part of the maternal supply of sex steroids was suppressed by ovariectomy on day 5 of pregnancy. These results support the hypothesis that steroids originating from the embryo affect the endometrial implantation site.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Logeat, F -- Sartor, P -- Hai, M T -- Milgrom, E -- New York, N.Y. -- Science. 1980 Mar 7;207(4435):1083-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7355273" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blastocyst/*metabolism ; Castration ; Cell Nucleus/metabolism ; Decidua/metabolism ; Endometrium/*metabolism/ultrastructure ; Female ; Gestational Age ; Pregnancy ; Pseudopregnancy ; Rats ; Receptors, Estrogen/*metabolism ; Receptors, Progesterone/*metabolism
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    Mutations in a nonessential viral gene permit bacteriophage T4 to form plaques on Escherichia coli valS ts relA (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-07-11
    Description: During viral development bacteriophage T4 modifies the valyl-transfer RNA synthetase of its host Escherichia coli, but the function of the modification has remained elusive. A strain of Escherichia coli has now been identified which is nonpermissive for wild-type bacteriophage T4, but permissive for bacteriophage mutants impaired in the modification reaction. A comparison with other bacteria suggests that nonpermissiveness is due to synthesis of a thermolabile valyl-transfer RNA synthetase and relaxed control of RNA accumulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marchin, G L -- New York, N.Y. -- Science. 1980 Jul 11;209(4453):294-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6992274" target="_blank"〉PubMed〈/a〉
    Keywords: Escherichia coli/*genetics ; *Genes, Viral ; *Mutation ; Species Specificity ; T-Phages/*genetics ; Viral Plaque Assay
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  • 33
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    Retina-dependent activation by apomorphine of metabolic activity in the superficial layer of the superior colliculus (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-01-18
    Description: Studies of the effect of the dopamine agonist apomorphine on local cerebral glucose utilization by means of the carbon-14-labeled deoxyglucose method demonstrate a dose-dependent metabolic activation in the superficial layer of the superior colliculus in the rat. Apomorphine stimulated glucose utilization in a number of other cerebral structures, but only the effect in the superficial layer of the superior colliculus depended on an intact retinal input. This effect was present with the animal in the light or in the dark, but was abolished by enucleation, which left the effects in other cerebral structures unimpaired. Activation of the superificial layer of the superior colliculus appears, therefore, to be secondary to an action of apomorphine on dopaminergic systems within the retina.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McCulloch, J -- Savaki, H E -- McCulloch, M C -- Sokoloff, L -- New York, N.Y. -- Science. 1980 Jan 18;207(4428):313-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7350662" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apomorphine/*pharmacology ; Dark Adaptation ; Dopamine/*physiology ; Functional Laterality ; Geniculate Bodies/metabolism ; Glucose/*metabolism ; Rats ; Retina/*physiology ; Superior Colliculi/drug effects/*metabolism ; Visual Cortex/metabolism ; Visual Pathways/physiology ; Visual Perception/*physiology
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    Blue light and bilirubin excretion (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-04-11
    Description: Blue light converts bilirubin in the skin of jaundiced rats to metastable geometric isomers that are transported in blood and excreted in bile. The same reaction probably occurs in jaundiced babies exposed to light, particularly during treatment with phototherapy. Excretion of unisomerized bilirubin is prevented by intramolecular hydrogen bonding, and the pigment has to be metabolized to more polar derivatives to be excreted efficiently.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McDonagh, A F -- Palma, L A -- Lightner, D A -- New York, N.Y. -- Science. 1980 Apr 11;208(4440):145-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7361112" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bile/analysis ; Bilirubin/*blood/metabolism ; Humans ; Infant, Newborn ; Jaundice, Neonatal/therapy ; Liver/metabolism ; Models, Biological ; Molecular Conformation ; *Phototherapy ; Rats ; Skin/*radiation effects ; Spectrophotometry ; Stereoisomerism
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    Gap junction development is correlated with insulin content in the pancreatic B cell (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-08-29
    Description: The development of gap junctions between insulin-containing B cells was quantitatively analyzed in islets of Langerhans isolated from rats treated with the sulfonylurea glibenclamid for 1, 2, or 7 days. Glibenclamid treatment was associated with a marked depletion of the insulin content of B cells and with an increase in the number and size of gap junctions between these cells. A significance correlation was found between these two events.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meda, P -- Halban, P -- Perrelet, A -- Renold, A E -- Orci, L -- New York, N.Y. -- Science. 1980 Aug 29;209(4460):1026-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6773144" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Communication/drug effects ; Female ; Freeze Fracturing ; Glyburide/*pharmacology ; Insulin/*metabolism ; Intercellular Junctions/drug effects/*ultrastructure ; Islets of Langerhans/drug effects/metabolism/*ultrastructure ; Rats
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    Mediation of diurnal fluctuations in pain sensitivity in the rat by food intake patterns: reversal by naloxone (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-10-10
    Description: Rats maintained on a 12-hour light-dark cycle were tested for pain sensitivity after being deprived of food during either the dark or the light phase of the cycle. Diurnal fluctuations in pain sensitivity were observed. The fluctuations followed food intake patterns rather than a natural circadian rhythm, with food deprivation producing a decrease in pain sensitivity. The analgesic response produced by this mild food deprivation was strongly attenuated by naloxone or feeding, suggesting that endogenous opioid systems may be related to patterns of food intake.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McGivern, R F -- Berntson, G G -- New York, N.Y. -- Science. 1980 Oct 10;210(4466):210-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7191143" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Circadian Rhythm ; Endorphins/antagonists & inhibitors/*physiology ; Feeding Behavior/*physiology ; Food Deprivation ; Male ; Naloxone/*pharmacology ; Pain/*physiopathology ; Rats
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    Insertion of a new gene of viral origin into bone marrow cells of mice (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-05-30
    Description: DNA containing the herpes simplex virus thymidine kinase (HSVtk) gene was used to transform wild-type tk+ mouse L cells to a tk++ status in vitro using methotrexate as a selective agent. HSVtk DNA was also used to transform mouse bone marrow cells in vitro. Transformed marrow cells injected into irradiated and methotrexate-treated recipient mice gave rise to proliferating cells which in some cases dominated the marrow population and which contained HSVtk gene sequences.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mercola, K E -- Stang, H D -- Browne, J -- Salser, W -- Cline, M J -- New York, N.Y. -- Science. 1980 May 30;208(4447):1033-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6246577" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Marrow/*enzymology ; Bone Marrow Transplantation ; DNA, Viral/analysis ; Drug Resistance ; *Genes, Viral ; L Cells (Cell Line) ; Methotrexate/pharmacology ; Mice ; Simplexvirus/enzymology/*genetics ; Species Specificity ; Thymidine Kinase/*genetics ; *Transformation, Genetic
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    Evolutionary conservation of repetitive sequence expression in sea urchin egg RNA's (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-05-30
    Description: Cloned repetitive DNA sequences were used to determine the number of homologous RNA transcripts in the eggs of two sea urchin species, Strongylocentrotus purpuratus and S. franciscanus. The eggs of these species contain different amounts of RNA, and their genomes contain different numbers of copies of the cloned repeats. The specific pattern of repetitive sequence representation in the two egg RNA's is nonetheless quantitatively similar. The evolutionary conservation of this pattern suggests the functional importance of repeat sequence expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moore, G P -- Costantini, F D -- Posakony, J W -- Davidson, E H -- Britten, R J -- New York, N.Y. -- Science. 1980 May 30;208(4447):1046-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6154974" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Biological Evolution ; DNA, Recombinant ; Female ; Nucleic Acid Hybridization ; Ovum/physiology ; Plasmids ; RNA/*genetics ; Sea Urchins/*genetics ; Species Specificity ; Transcription, Genetic
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    Stress-induced eating is mediated through endogenous opiates (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-09-12
    Description: The interaction of endogenous opiates and stress-induced eating in rats was evaluated by pharmacological manipulation. Eating induced by the tail-pinch method was inhibited by the opitate antagonist naloxone; after being repeatedly stressed over a 10-day period and then given nalozone, the rats behaved in a manner indistinguishable from the "wet-dog" shakes of opiate withdrawal. Thus endogenous opiates may have a role in the control of stress-related eating, a finding that may have therapeutic implications for humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morley, J E -- Levine, A S -- New York, N.Y. -- Science. 1980 Sep 12;209(4462):1259-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6250222" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/drug effects ; Cholecystokinin/pharmacology ; Diazepam/pharmacology ; Eating/*drug effects ; Endorphins/antagonists & inhibitors/*physiology ; Male ; Naloxone/*pharmacology ; Rats ; Receptors, Opioid/drug effects ; Stress, Physiological/*physiopathology
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    Intercellular adhesion: coconstruction of contractile heart tissue by cells of different species (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-06-06
    Description: Dissociated embryonic rat myocardial cells and chick myocardial cells labeled with radioactive isotope coaggregate and establish intercellular junctions. These bispecific cells reconstruct synchronously beating myocardial tissue within 24 hours of culture.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nag, A C -- Cheng, M -- New York, N.Y. -- Science. 1980 Jun 6;208(4448):1150-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7375923" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Adhesion ; *Cell Aggregation ; Cells, Cultured ; Chickens ; Heart/*embryology ; Intercellular Junctions/ultrastructure ; Mosaicism ; Myocardial Contraction ; Myocardium/*cytology ; Rats ; Species Specificity
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    Mild cold exposure increases survival in rats with medial preoptic lesions (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-04-18
    Description: High mortality rate in rats with large medial preoptic lesions discourage their use in studies of brain function. However, virtually all such animals (six out of seven) survived indefinitely if kept at an ambient temperature of 15 degrees C for 2 hours before and 10 to 12 hours after the lesions were made. Although these rats appeared otherwise healthy, they could not maintain normal both temperatures in short-term cold tests. In contrast, five of the nine rats kept at 25 degrees C died within 10 hours after the operation, and three more died within 5 days. Rats kept at 25 degrees C had a much higher incidence of cardiac arrhythmias than did rats kept at 15 degrees C, which may be responsible for their higher moratlity rates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nagel, J A -- Satinoff, E -- New York, N.Y. -- Science. 1980 Apr 18;208(4441):301-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7367860" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Body Temperature Regulation ; Brain/physiology ; *Cold Temperature ; Female ; Heart Rate ; Hypothalamus/*physiology ; Male ; Motor Activity/physiology ; Oxygen Consumption ; Preoptic Area/*physiology/surgery ; Rats ; Vasoconstriction
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    J genes for heavy chain immunoglobulins of mouse (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-09-05
    Description: A 15,8-kilobase pair fragment of BALB/c mouse liver DNA, cloned in the Charon 4A lambda phage vector system, was shown to contain the mu heavy chain constant region (CHmu) gene for the mouse immunoglobulin M. In addition, this fragment of DNA contains at least two J genes, used to code for the carboxyl terminal portion of heavy chain variable regions. These genes are located in genomic DNA about eight kilobase pairs to the 5' side of the CHmu gene. The complete nucleotide sequence of a 1120-base pair stretch of DNA that includes the two J genes has been determined.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Newell, N -- Richards, J E -- Tucker, P W -- Blattner, F R -- New York, N.Y. -- Science. 1980 Sep 5;209(4461):1128-32.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6250219" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Binding Sites, Antibody/*genetics ; DNA Restriction Enzymes ; DNA, Recombinant ; Genes ; Genetic Linkage ; Immunoglobulin Heavy Chains/*genetics ; Immunoglobulin Variable Region/*genetics ; Immunoglobulin mu-Chains/*genetics ; Mice
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    Vitamin D deficiency inhibits pancreatic secretion of insulin (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-08-15
    Description: The effects of a vitamin D deficiency on insulin and glucagon release was determined in the isolated perfused rat pancreas by radioimmunoassay of the secreted proteins. During a 30-minute period of perfusion with glucose and arginine, pancreases from vitamin D-deficient rats exhibited a 48 percent reduction in insulin secretion compared to that for pancreases from vitamin D-deficient rats that had been replenished with vitamin D. Vitamin D status had no effect on pancreatic glucagon secretion. This result, along with the previously demonstrated presence in the pancreas of a vitamin D-dependent calcium-binding protein and cytosol receptor for the hormonal form of vitamin D, 1,25-dihydroxyvitamin D3, indicates an important role for vitamin D in the endocrine functioning of the pancreas.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Norman, A W -- Frankel, J B -- Heldt, A M -- Grodsky, G M -- New York, N.Y. -- Science. 1980 Aug 15;209(4458):823-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6250216" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arginine/pharmacology ; Cholecalciferol/*deficiency ; Glucagon/secretion ; Glucose/pharmacology ; Insulin/*secretion ; Islets of Langerhans/*secretion ; Rats ; Time Factors ; Vitamin D Deficiency/*metabolism
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    Feeding: satiety signal from intestine triggers brain's noradrenergic mechanism (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-08-29
    Description: Noradrenergic neurons in the hypothalamus involved in feeding and satiety are activated by gastrointestinal receptors. In the unrestrained rat, sites were first identified at which norepinephrine injected in the medial hypothalamus caused spontaneous feeding, or in the lateral hypothalamus caused no response. The activity of in vivo norepinephrine at these two sites was characterized by localized push-pull perfusion. When a nutrient was infused directly into the rat's duodenum, the synaptic release of hypothalamic norepinephrine was enhanced at lateral sites insensitive to norepinephrine, but suppressed at medial sites reactive to norepinephrine. Thus, signals from duodenal receptors are conceivably sent to the rat's brain to end feeding by way of noradrenergic inhibitory neurons in the hypothalamus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Myers, R D -- McCaleb, M L -- New York, N.Y. -- Science. 1980 Aug 29;209(4460):1035-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7403866" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Duodenum/innervation/*physiology ; Feeding Behavior/physiology ; Glucose ; Hypothalamus/*physiology ; Norepinephrine/*physiology ; Rats ; Satiation/*physiology ; Satiety Response/*physiology ; Time Factors
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    DDT contamination at Wheeler National Wildlife Refuge (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-07-25
    Description: Disposal of industrial waste resulted in massive DDT contamination at Wheeler National Wildlife Refuge, Alabama. Nearly a decade after the cessation of DDT manufacturing at the facility responsible, concentrations of DDT residues in the local fauna are still high enough to suggest avian reproductive impairment and mortality. Populations of fish-eating birds are low, endangered species are being exposed, and muscle lipids of game birds contain up to 6900 parts of DDT (isomers and metabolites) per million.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Shea, T J -- Fleming, W J -- Cromartie, E -- New York, N.Y. -- Science. 1980 Jul 25;209(4455):509-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7394517" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Birds ; DDT/*analysis ; Ducks ; *Industrial Waste ; Lipids/analysis ; Muscles/analysis ; Rabbits ; Species Specificity
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  • 46
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    Properties of a normal mouse cell DNA sequence (sarc) homologous to the src sequence of Moloney sarcoma virus (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-03-14
    Description: A 15.0-kilobase (kb) Eco RI DNA fragment from normal mouse Balb/c genomic DNA that contains sequences (sarc) homologous to the acquired cell sequences (src) of Moloney sarcoma virus (MSV) has been cloned in phage lambda. The sarc region (1.2 to 1.3 kb) of the 15.0-kb cell fragment is indistinguishable from the src region of two isolates of MSV as judged by heteroduplex and restriction endonuclease analyses. The cellular sequences flanking sarc show no homology to other MSV sequences. Whereas cloned subgenomic portions of MSV that contain src transformed NIH-3T3 cells in vitro, the cloned sarc fragment is inactive.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oskarsson, M -- McClements, W L -- Blair, D G -- Maizel, J V -- Vande Woude, G F -- New York, N.Y. -- Science. 1980 Mar 14;207(4436):1222-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6243788" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chromosome Mapping ; DNA Restriction Enzymes ; *Genes ; *Genes, Viral ; Mice ; Mice, Inbred BALB C/*genetics ; Moloney murine leukemia virus/*genetics ; Nucleic Acid Hybridization
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    Cytosolic and microsomal epoxide hydrolases: differential properties in mammalian liver (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-03-28
    Description: The epoxide hydrolase activities of the 100,000 g pellet (microsomal) and 100,00 g soluble (cystosolic) fractions of mouse, rat, and guinea pig liver were measured with three closely related compounds used as substrates. Differences between the species in the distribution of the cytosolic and microsomal hydrolases and in their substrate specificities and pH optima demonstrate why epoxide hydrolase activity in the cytosolic fraction was not detected earlier in spie of intensive work on the microsomal epoxide hydrolase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ota, K -- Hammock, B D -- New York, N.Y. -- Science. 1980 Mar 28;207(4438):1479-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7361100" target="_blank"〉PubMed〈/a〉
    Keywords: Allyl Compounds ; Animals ; Benzene ; Cytosol/enzymology ; Epoxide Hydrolases/*metabolism ; Guinea Pigs ; Hydrogen-Ion Concentration ; Liver/*enzymology/ultrastructure ; Mice ; Microsomes, Liver/enzymology ; Rats ; Styrenes ; Substrate Specificity
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    Genes for growth hormone, chorionic somatommammotropin, and growth hormones-like gene on chromosome 17 in humans (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-07-11
    Description: The human genes for growth hormone (GH), chorionic somatomammotropin (CSH), and a third growth hormone-like gene (GHL) have been located on chromosome 17 in humans. DNA fragments of 2.6, 2.8, and 9.5 kilobase pairs containing GH, CSH, and GHL, respectively, were identified in human genomic DNA, and a 7.5-kilobase DNA fragment related to growth hormone DNA sequences was found in mouse cells. In somatic hybrids of human and mouse cells containing reduced numbers of human chromosomes, but a normal complement of mouse chromosomes, the mouse, 7.5-kolobase DNA fragment was always present, whereas the 2.6-, 2.8-, and 9.5-kilobase human fragments were present only when human chromosome 17 was also present.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Owerbach, D -- Rutter, W J -- Martial, J A -- Baxter, J D -- Shows, T B -- New York, N.Y. -- Science. 1980 Jul 11;209(4453):289-92.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7384802" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Line ; *Chromosomes, Human, 16-18 ; *DNA/metabolism ; *Genes ; Growth Hormone/*biosynthesis ; Humans ; Hybrid Cells/metabolism ; Mice ; Placental Lactogen/*biosynthesis ; Translocation, Genetic
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    Beta-adrenergic-receptor localization by light microscopic autoradiography (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-06-20
    Description: beta-Receptors were identified in rat brain by a light microscopic autoradiographic technique. The procedure involved binding 3H-labeled dihydroalprenolol to beta-receptors in intact slide-mounted tissue sections and generating autoradiograms by the apposition of emulsion-coated cover slips, Biochemical analysis of the binding indicated that these conditions provided a high degree of selective labeling of beta-receptors. High densities of receptors were found in superficial layers of the cerebral cortex, throughout the caudate-putamen, in the periventricular nucleus of the thalamus, in the molecular layer of the cerebellum, and in other areas. These results are in agreement with other electrophysiological and histochemical data. This radiohistochemical approach should be an important addition to other methods for mapping functional catecholamine neuronal pathways and sites of hormonal action.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palacios, J M -- Kuhar, M J -- New York, N.Y. -- Science. 1980 Jun 20;208(4450):1378-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6246585" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoradiography/*methods ; *Brain Chemistry ; Cerebellum/metabolism ; Cerebral Cortex/metabolism ; Corpus Striatum/metabolism ; Dihydroalprenolol/metabolism ; Hippocampus/metabolism ; Microscopy ; Norepinephrine/metabolism ; Rats ; Receptors, Adrenergic/*analysis ; Receptors, Adrenergic, beta/*analysis
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    Flavor-illness aversions: the peculiar roles of odor and taste in memory for poison (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-05-16
    Description: When either taste or odor alone was followed by poison, rats acquired a strong aversion for the taste but not for odor, especially if poison was delayed. When odor-taste combinations were poisoned, however, odor aversions were potentiated, as if odor could gain the enduring memorial property of taste by associative contiguity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palmerino, C C -- Rusiniak, K W -- Garcia, J -- New York, N.Y. -- Science. 1980 May 16;208(4445):753-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7367891" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avoidance Learning/*physiology ; Conditioning (Psychology)/physiology ; Lithium/poisoning ; Male ; Rats ; Smell/*physiology ; Taste/*physiology ; Time Factors
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    Environmental influences on body weight and behavior in developing rats after neonatal 6-hydroxydopamine (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-08-08
    Description: There is less hyperactive motor activity and better avoidance performance in rat pups treated with 6-hydroxydopamine as neonates and reared with vehicle-treated littermates than in pups reared in litters composed solely of other 6-hydroxydopamine-treated animals. Thus, in this experimental model of hyperactivity, an environmental manipulation provides an alternative to pharmacologic agents in reducing activity and improving learning performance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pearson, D E -- Teicher, M H -- Shaywitz, B A -- Cohen, D J -- Young, J G -- Anderson, G M -- New York, N.Y. -- Science. 1980 Aug 8;209(4457):715-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7394533" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; *Behavior, Animal/drug effects ; *Body Weight/drug effects ; Brain/drug effects/metabolism ; Catecholamines/metabolism ; *Environment ; Hydroxydopamines/*pharmacology ; Rats
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    Pro-adrenocorticotropin/endorphin-derived peptides: coordinate action on adrenal steroidogenesis (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-05-30
    Description: A synthetic peptide, representing a portion of the 16K (16,000 dalton)-fragment sequence within the pro-adrenocorticotropin/endorphin precursor molecule, potentiates the steroidogenic action of the 1 to 24 portion of adrenocorticotropin [ACTH(1-24)] on the rat adrenal cortex. The peptide has 27 amino acid residues and consists of gamma-melanotropin with a carboxyl terminal extension. It affects both the inner and outer adrenocortical zones of hypophysectomized animals, as evidenced by a synergistic augmentation of corticosterone and aldosterone production, respectively. The peptide can be distinguished from adrenocorticotropin by its activation of cholesterol ester hydrolase and its failure to stimulate cholesterol side-chain cleavage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pedersen, R C -- Brownie, A C -- Ling, N -- New York, N.Y. -- Science. 1980 May 30;208(4447):1044-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6246578" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenal Cortex/*drug effects/metabolism ; Adrenal Cortex Hormones/*biosynthesis ; Adrenocorticotropic Hormone/*pharmacology ; Aldosterone/biosynthesis ; Animals ; Corticosterone/biosynthesis ; Endorphins/pharmacology ; Female ; Melanocyte-Stimulating Hormones/*pharmacology ; Molecular Weight ; Peptide Fragments/*pharmacology ; Protein Precursors/pharmacology ; Rats ; Sterol Esterase/metabolism
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    "Transdifferentiation" of C6 glial cells in culture (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-04-11
    Description: The activities of cyclic nucleotide phosphohydrolase, an enzyme marker for oligodendrocytes, and glutamine synthetase, an enzyme marker for astrocytes, were studied at early (21 to 26) and late (82 to 88) cell passages. The activity of cyclic nucleotide phosphohydrolase was markedly high and that of glutamine synthetase was low in the early passages, but this relation was reversed in the late passages. These findings suggest a "transdifferentiation" of C6 glial cells with passage in culture.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Parker, K K -- Norenberg, M D -- Vernadakis, A -- New York, N.Y. -- Science. 1980 Apr 11;208(4440):179-81.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6102413" target="_blank"〉PubMed〈/a〉
    Keywords: 2',3'-Cyclic-Nucleotide Phosphodiesterases/metabolism ; Animals ; Astrocytes/enzymology ; *Cell Differentiation ; Cells, Cultured ; Glutamate-Ammonia Ligase/metabolism ; Neuroglia/*enzymology ; Oligodendroglia/enzymology ; Rats
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    Lithium reduces the number of acetylcholine receptors in skeletal muscle (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-10-17
    Description: Extended treatment of rats with lithium inhibits the increase in the number of extrajunctional acetylcholine receptors that occurs in their denervated skeletal muscle. In normal muscle, lithium reduces the number of acetylcholine receptors at neuromuscular junctions. These changes appear to be a relatively specific effect of lithium on the turnover of receptors. Skeletal muscle provides an accessible system for analyzing the role of lithium (and other cations) in the regulation of cell surface receptors. This regulation may play a role in the mechanism by which lithium prevents recurrent manic-depressive episodes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pestronk, A -- Drachman, D B -- 5P01-NS10920/NS/NINDS NIH HHS/ -- 5R01-HD04817/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1980 Oct 17;210(4467):342-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7423198" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/metabolism ; Animals ; Female ; Lithium/*pharmacology ; Muscle Denervation ; Muscles/*drug effects/metabolism ; Neuromuscular Junction/drug effects ; Rats ; Receptors, Cholinergic/*metabolism
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    Long-term antidepressant treatment decreases spiroperidol-labeled serotonin receptor binding (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-10-03
    Description: Antidepressants compete at several neurotransmitter receptor binding site, but drug affinities do not correlate with clinical efficacy. Long-term, but not short-term, antidepressant treatment decreases the numbers of both serotonin and beta-adrenergic receptors. The decrease in the number of receptor sites is most marked for [3H]spiroperidol-labeled serotonin receptors and is characteristic for antidepressants of several classes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peroutka, S J -- Snyder, S H -- 5T32GM0309/GM/NIGMS NIH HHS/ -- DA00266/DA/NIDA NIH HHS/ -- MH18501/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1980 Oct 3;210(4465):88-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6251550" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antidepressive Agents/administration & dosage/metabolism/*pharmacology ; Frontal Lobe/drug effects ; Male ; Rats ; Receptors, Adrenergic, alpha/metabolism ; Receptors, Adrenergic, beta/drug effects/metabolism ; Receptors, Dopamine/metabolism ; Receptors, Histamine H1/metabolism ; Receptors, Muscarinic/metabolism ; Receptors, Serotonin/*drug effects/metabolism ; Spiperone/metabolism ; Time Factors
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    Sperm-egg interaction: evidence for boar sperm plasma membrane receptors for porcine zona pellucida (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-01-04
    Description: Freshly ejaculated, noncapacitated boar sperm bind rapidly and in large numbers to pig egg zona pellucida in vitro. In the present study, the number of sperm bound decreased sharply when sperm motility was lowered by energy poisons or by reducing the temperature. Highly motile sperm from humans, guinea pigs, and rats, added at concentrations ten times higher than control sperm, did not bind to the porcine zona. At the same high concentration, a small number of hamster and bull sperm bound to the zona. Binding of boar sperm to the zona pellucida was blocked almost completely by diluted whole antiserum to sperm plasma membranes and by univalent (Fab) antibody to these membranes. When antibody to sperm plasma membrane was first absorbed with plasma membrane vesicles, sperm binding was not inhibited. These results provide direct evidence for the existence of sperm plasma membrane receptors for the zona pellucida of the pig.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peterson, R N -- Russell, L -- Bundman, D -- Freund, M -- New York, N.Y. -- Science. 1980 Jan 4;207(4426):73-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7188647" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cattle ; Cell Membrane/metabolism ; Female ; *Fertilization ; Guinea Pigs ; Humans ; Immunoglobulin Fab Fragments ; Male ; Ovum/*metabolism ; Rats ; Receptors, Drug/metabolism ; Species Specificity ; *Sperm-Ovum Interactions ; Spermatozoa/*metabolism ; Swine ; Zona Pellucida/*metabolism
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    Hormone binding alters the conformation of the insulin receptor (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-12-05
    Description: Fat cells or fat cell membranes were briefly subjected to mild proteolysis under conditions where insulin receptors were either free or bound to (125)I-labeled insulin. When receptors were then affinity-labeled to visualize the effects of this treatment, it was observed that receptors that had been occupied by ligand during proteolysis exhibited greater rates of degradation than unoccupied receptors. These results demonstrate that insulin-receptor interaction induces a change in receptor structure that may be related to signal transmission.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pilch, P F -- Czech, M P -- AM 06069/AM/NIADDK NIH HHS/ -- AM 17893/AM/NIADDK NIH HHS/ -- HD 11343/HD/NICHD NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1980 Dec 5;210(4474):1152-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7003712" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/metabolism ; Animals ; Cell Membrane/metabolism ; Insulin/*metabolism ; Male ; Peptide Fragments/analysis ; Protein Binding ; Protein Conformation ; Rats ; Receptor, Insulin/*metabolism ; Trypsin/metabolism
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    Nerve terminals are as metabolically different as the muscle fibers they innervate (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-11-21
    Description: The rate at which glucose enters nerve terminals in muscle was estimated indirectly by measuring changes in miniature end-plate potential frequency D-Glucose entered nerve terminals in muscles with a fast twitch more rapidly than it entered those with a slow twitch. This suggests that nerve terminals in fast- and slow-twitch muscles differ in their rate of metabolism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pickett, J B -- New York, N.Y. -- Science. 1980 Nov 21;210(4472):927-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7434009" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Transport ; Diaphragm/innervation ; Glucose/*metabolism ; Kinetics ; Membrane Potentials ; Nerve Endings/*metabolism ; Neuromuscular Junction/*metabolism ; Osmolar Concentration ; Rats
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    Entry of opioid peptides into the central nervous system (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-01-04
    Description: Cerebrovascular permeability of four modified opioid peptides--[D-Ala2]methionine enkephalin amide, beta-[D-Ala62,14C-Homoarg69]lipotropin 61 -69, alpha-[D-Ala2,14C-Homoarg9]endorphin, and beta-[D-Ala2,14C-Homoarg]endorphin--ranged from 1.4 to 3.9 X 10(-6) centimeters per second in brain regions of the conscous rat. These significant permeabilities should allow the peptides to fill the extracellular brain space with a half time of 3 to 11 minutes, as a result of a step increase in plasma concentration of unbound peptide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rapoport, S I -- Klee, W A -- Pettigrew, K D -- Ohno, K -- New York, N.Y. -- Science. 1980 Jan 4;207(4426):84-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7350645" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Blood-Brain Barrier ; Brain/*metabolism ; Capillary Permeability ; Endorphins/*metabolism ; Enkephalins/metabolism ; Extracellular Space/metabolism ; Male ; Rats ; Solubility ; beta-Lipotropin/*metabolism
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    Rapid effect of triiodothyronine on the mitochondrial pathway in rat liver in vivo (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-10-17
    Description: Intravenous infections of minute doses of triiodothyronine were administered to thyroidectomized rats 30 minutes before they were killed. Hepatic mitochondria were isolated rapidly and formation of adenosine triphosphate and consumption of oxygen were assessed by a 2-minute incubation. Hormone injection enhanced formation of adenosine triphosphate 114 to 217 percent over control values, with a proportionate increase in consumption of oxygen. The ratio of phosphate to oxygen was about 2.0, signifying tightly coupled oxidative phosphorylation. Stimulation was not abolished by injection of cycloheximide, puromycin, actinomycin D, or chloramphenicol 1 hour before the rats were killed. This signifies direct mitochondrial stimulation by triiodothyronine in the absence of protein synthesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sterling, K -- Brenner, M A -- Sakurada, T -- AM 10739/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1980 Oct 17;210(4467):340-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7423197" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/biosynthesis ; Animals ; Mitochondria, Liver/*drug effects ; Oxygen Consumption ; Protein Biosynthesis ; Rats ; Thyroidectomy ; Triiodothyronine/*pharmacology
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    The origins of gene instability in yeast (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-09-19
    Description: Two unstable mutations at the his4 locus of yeast are due to the insertion of the transposable elements Ty912 and Ty917 into the his4 regulatory region. The two transposons are related, one being derived from the other by a substitution of 4000 base pairs of DNA. Element Ty912 includes identical terminal repeats, whereas the terminal repeats of Ty917 are not identical. Transposition of Ty912 or Ty917 generates 5-base-pair duplications of the target DNA at either end of the element. Expression and reversion of a his4 gene containing Ty912 or Ty917 is controlled by three unlinked regulatory genes. The properties of these regulatory genes are similar to those described for the controlling elements in maize.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roeder, G S -- Farabaugh, P J -- Chaleff, D T -- Fink, G R -- CA23441/CA/NCI NIH HHS/ -- GM07617/GM/NIGMS NIH HHS/ -- GM15408/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1980 Sep 19;209(4463):1375-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6251544" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Base Sequence ; Cloning, Molecular/methods ; *DNA Transposable Elements ; DNA, Fungal/genetics ; Genes, Regulator ; Genetic Linkage ; Histidine/*genetics ; Saccharomyces cerevisiae/*genetics ; Suppression, Genetic
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    Stereospecific nicotine receptors on rat brain membranes (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-11-07
    Description: A stereospecific binding site for nicotine has been detected on rat brain membranes. Competition studies with cholinergic agonists suggest that this site is a nicotinic cholinergic receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Romano, C -- Goldstein, A -- DA-1938/DA/NIDA NIH HHS/ -- DA-7063/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 1980 Nov 7;210(4470):647-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7433991" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding, Competitive ; Brain/*metabolism ; Ligands ; Male ; Nicotine/metabolism ; Rats ; Receptors, Cholinergic/*metabolism ; Receptors, Nicotinic/*metabolism ; Stereoisomerism ; Structure-Activity Relationship ; Synaptic Membranes/metabolism
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    Directed deletion of a yeast transfer RNA intervening sequence (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-09-19
    Description: Many eukaryotic genes contain intevening sequences, segments of DNA that interrupt the continuity of the gene. They are removed from RNA transcripts of the gene by a process known as splicing. The intervening sequence in a yeast tyrosine transfer RNA (tRNA Tyr) suppressor gene was deleted in order to test its role in the expression of the gene. The altered gene and its parent were introduced into yeast by transformation. Both genes exhibited suppressor function, showing that the intervening sequence is not absolutely essential for the expression of this gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wallace, R B -- Johnson, P F -- Tanaka, S -- Schold, M -- Itakura, K -- Abelson, J -- CA10984/CA/NCI NIH HHS/ -- GM 26391/GM/NIGMS NIH HHS/ -- GM 35658/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1980 Sep 19;209(4463):1396-400.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6997991" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Chromosome Deletion ; DNA, Recombinant ; Genes ; Mutation ; Nucleic Acid Precursors/genetics ; Plasmids ; RNA, Fungal/*genetics ; RNA, Transfer/*genetics ; Saccharomyces cerevisiae/genetics ; Suppression, Genetic ; Tyrosine
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    Pituitary gonadotropin-releasing hormone receptors during the rat estrous cycle (1980)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1980-08-22
    Description: The binding of [6-alanine]gonadotropin-releasing hormone to pituitary plasma membranes increased threefold between metestrus and early proestrus in female rats. Receptor numbers fell rapidly on the afternoon of proestrus coincident with the preovulatory gonadotropin surge. The numbers of receptors for gonadotropin-releasing hormone were positively correlated with concentrations of estradiol in serum; this pattern may be a necessary component of increased pituitary sensitivty to gonadotropin-releasing hormone observed during proestrus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Savoy-Moore, R T -- Schwartz, N B -- Duncan, J A -- Marshall, J C -- New York, N.Y. -- Science. 1980 Aug 22;209(4459):942-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6250218" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Membrane/metabolism ; Estradiol/blood ; *Estrus ; Feedback ; Female ; Follicle Stimulating Hormone/blood ; Gonadotropin-Releasing Hormone/analogs & derivatives/*metabolism ; Kinetics ; Luteinizing Hormone/blood ; Pituitary Gland, Anterior/*metabolism ; Pregnancy ; Progesterone/blood ; Rats ; Receptors, Cell Surface/*metabolism
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    Glutamine synthetase: assimilatory role in liver as related to urea retention in marine chondrichthyes (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-04-18
    Description: The levels of gluatmine synthetase specific activity in hepatic and renal tissue are higher in fish that are ureosmoregulators than in those that are not. Enzyme activities in the liver and kidney of 18 species of fish correlated directly with the ureosmoregulatory adaptation of each species.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Webb, J T -- Brown, G W Jr -- New York, N.Y. -- Science. 1980 Apr 18;208(4441):293-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6102799" target="_blank"〉PubMed〈/a〉
    Keywords: Ammonia/metabolism ; Animals ; Brain/enzymology ; Fishes/*metabolism ; Glutamate-Ammonia Ligase/*metabolism ; Kidney/enzymology ; Liver/enzymology ; Species Specificity ; Urea/*metabolism ; Water-Electrolyte Balance
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Aspirin: an unexpected side effect on prostacyclin synthesis in cultured vascular smooth muscle cells (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-11-07
    Description: Monolayer cultures of rat aorta smooth muscle cells synthesized the anti-aggregatory substance prostacyclin via the cyclooxygenase pathway from 14C-labeled arachidonic acid. The product was identified both by bioassay and by mass spectrometry. Labeled cells produced prostacyclin only when exposed to the initiator thrombin: treatment with therapeutic concentrations of aspirin (0.2 millimolar) for 30 minutes completely destroyed the cells' ability to synthesize prostacyclin. Prostacyclin synthesis from exogenous arachidonic acid recovered fully within 1 to 2 hours by a cycloheximide-sensitive process. Thrombin responsivness, which was permanently impaired in confluent nondividing cultures, recovered substantially and within 24 hours only when cells were stimulated to divide by subculturing. These results indicate that resting vascular cells can rapidly synthesize new cyclooxygenase, but that aspirin destroys additional components of the prostacyclin system which can only be replaced during cell division.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Whiting, J -- Salata, K -- Bailey, J M -- New York, N.Y. -- Science. 1980 Nov 7;210(4470):663-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6776627" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aorta/*drug effects ; Arachidonic Acids/metabolism ; Aspirin/*pharmacology ; Cells, Cultured ; Cyclooxygenase Inhibitors ; Epoprostenol/*biosynthesis ; Muscle, Smooth/drug effects ; Prostaglandins/*biosynthesis ; Rats ; Thrombin/pharmacology
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    Genotoxicity of the antihypertensive drugs hydralazine and dihydralazine (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-10-17
    Description: The genotoxicity of the antihypertensive agents hydralazine and dihydralazine was tested in mammalian cells and bacteria. Both drugs elicited DNA repair in rat hepatocyte primary cultures. In the Ames test, both with and without an S-9 fraction, hydralazine was mutagenic in strains TA100 and TA1537, whereas dihydralazine was weakly mutagenic in strain TA1537. These findings support the observation that hydralazine is carcinogenic in mice. The carcinogenicity of many chemicals results from interaction with DNA. Since these studies demonstrate that hydralazine and dihydralazine damage DNA in mammalian cells, these drugs should be viewed as potential human carcinogens.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Williams, G M -- Mazue, G -- McQueen, C A -- Shimada, T -- N 01-CP-55705/CP/NCI NIH HHS/ -- New York, N.Y. -- Science. 1980 Oct 17;210(4467):329-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7423193" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Animals ; Biotransformation ; *Carcinogens ; Cells, Cultured ; DNA Repair/*drug effects ; Dihydralazine/*toxicity ; Dose-Response Relationship, Drug ; Drug Evaluation, Preclinical ; Hydralazine/*analogs & derivatives/*toxicity ; Liver/metabolism ; *Mutagens ; Rats ; Salmonella typhi/drug effects
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    Multiple daily amphetamine administration: behavioral and neurochemical alterations (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-02-15
    Description: In rats, multiple daily amphetamine injections (2.5 milligrams per kilogram of body weight, injected subcutaneously every 4 hours for 5 days) resulted in a progressive augmentation in response, characterized by a more rapid onset and an increased magnitude of stereotypy. By contrast, offset times of both the stereotypy and the poststereotypy hyperactivity periods were markedly shortened. When the animals were retested with the same dose of amphetamine 8 days after the long-term treatment was discontinued, the time of offset of the stereotypy and hyperactivity phases had recovered to values found with short-term amphetamine treatment, whereas the more rapid onset of stereotypy persisted. Brain monoamine and amphetamine concentrations and tyrosine hydroxylase activity were determined in comparably treated rats at times corresponding to the behavioral observations. The behavioral data indicate that enhanced responsiveness to amphetamine following its repeated administration may contribute to the development of amphetamine psychosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Segal, D S -- Weinberger, S B -- Cahill, J -- McCunney, S J -- New York, N.Y. -- Science. 1980 Feb 15;207(4433):905-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7188815" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior/*drug effects ; Behavior, Animal/*drug effects ; Brain/metabolism ; Brain Chemistry/drug effects ; Dextroamphetamine/administration & dosage/*pharmacology ; Dopamine/metabolism ; Dose-Response Relationship, Drug ; Humans ; Male ; Motor Activity/drug effects ; Norepinephrine/metabolism ; Rats ; Serotonin/metabolism ; Stereotyped Behavior/*drug effects ; Time Factors
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    Inhibition of dihydropteridine reductase by novel 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine analogs (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-04-27
    Description: Hydroxylated derivatives of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP), a nigrostriatal neurotoxin in humans and primates, noncompetitively inhibited dihydropteridine reductase from human liver and rat striatal synaptosomes in vitro at micromolar concentrations. In contrast, MPTP and its chloro- and norderivatives did not inhibit this enzyme at lower than millimolar concentrations. Dihydropteridine reductase converts dihydrobiopterin to tetrahydrobiopterin, the required cofactor for the hydroxylation of aromatic amino acids during the synthesis of dopamine and serotonin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abell, C W -- Shen, R S -- Gessner, W -- Brossi, A -- HD 14635/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1984 Apr 27;224(4647):405-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6608790" target="_blank"〉PubMed〈/a〉
    Keywords: 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine ; Animals ; Corpus Striatum/enzymology ; Dihydropteridine Reductase/*antagonists & inhibitors ; Humans ; Hydroxylation ; Liver/enzymology ; NAD/metabolism ; NADH, NADPH Oxidoreductases/*antagonists & inhibitors ; Pyridines/*pharmacology ; Rats ; Structure-Activity Relationship ; Synaptosomes/enzymology
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    Plasticity of substance P in mature and aged sympathetic neurons in culture (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-09-28
    Description: The effect of age on the plasticity of the putative peptide neurotransmitter substance P (SP) was examined in the rat superior cervical sympathetic ganglion. Explantation of ganglia from 6-month-old rats to serum-supplemented culture resulted in a tenfold increase in SP concentration, reproducing results previously obtained for ganglia from neonatal rats. Veratridine prevented the increase in SP concentration in adult ganglia, and tetrodotoxin blocked the veratridine effect, suggesting that membrane depolarization and sodium influx prevented the rise in the SP content of adult ganglia as well as of neonatal ganglia. However, the time courses of the increase in the amount of the peptide differed in neonatal and mature ganglia, suggesting that some aspects of regulation may differ in the two. The effects of aging on neural plasticity were further analyzed by explanting ganglia from 2-year-old rats. No significant increase in SP concentration was observed in these ganglia. Remarkable plasticity thus seems to persist in mature neurons but may be deficient in aged sympathetic neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adler, J E -- Black, I B -- HD 12108/HD/NICHD NIH HHS/ -- NS 10259/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1984 Sep 28;225(4669):1499-500.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6206570" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; Culture Techniques ; Ganglia, Sympathetic/*analysis/cytology/physiology ; *Neuronal Plasticity ; Neurons/*analysis/physiology ; Rats ; Substance P/*analysis ; Tetrodotoxin/pharmacology ; Veratridine/pharmacology
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  • 71
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    Avian pancreatic polypeptide phase shifts hamster circadian rhythms when microinjected into the suprachiasmatic region (1984)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1984-02-24
    Description: The suprachiasmatic nucleus has been identified tentatively as a circadian pacemaker. To examine the functional role of peptides found within suprachiasmatic neurons, avian pancreatic polypeptide and vasopressin were microinjected into the suprachiasmatic region. Avian pancreatic polypeptide, but not vasopressin, shifted the phase of the wheelrunning rhythm as a function of the time of its injection within the circadian cycle. Avian pancreatic polypeptide or a similar peptide may be one component of the neurochemical processes underlying entrainment to the light-dark cycle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Albers, H E -- Ferris, C F -- Leeman, S E -- Goldman, B D -- GM-31199/GM/NIGMS NIH HHS/ -- HD-18022/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1984 Feb 24;223(4638):833-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6546454" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Birds ; Cerebral Ventricles/drug effects ; *Circadian Rhythm ; Cricetinae ; Motor Activity/drug effects ; Nerve Tissue Proteins/pharmacology ; Neuropeptide Y ; Pancreatic Polypeptide/*pharmacology ; Species Specificity ; Suprachiasmatic Nucleus/*drug effects ; Vasopressins/pharmacology
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    Leptospirosis in laboratory mice (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-06-15
    Description: The obituary for William A. Altemeier, Jr. (4 May, p. 525), was incorrect. Dr. Altemeier was chairman of the Department of Surgery at the University of Cincinnati.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alexander, A D -- New York, N.Y. -- Science. 1984 Jun 15;224(4654):1158.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6729449" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Laboratory/*microbiology ; Dogs ; Humans ; Leptospira ; Leptospirosis/*microbiology/transmission ; Mice ; Mice, Inbred ICR ; Primates ; Rats
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    Magnesium deficiency and hypertension: correlation between magnesium-deficient diets and microcirculatory changes in situ (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-03-23
    Description: Rats maintained for 12 weeks on diets moderately or more severely deficient in magnesium showed significant elevations in arterial blood pressure compared to control animals. Examination of the mesenteric microcirculation in situ revealed that dietary magnesium deficiency resulted in reduced capillary, postcapillary, and venular blood flow concomitant with reduced terminal arteriolar, precapillary sphincter, and venular lumen sizes. The greater the degree of dietary magnesium deficiency the greater the reductions in microvascular lumen sizes. These findings may provide a rationale for the etiology, as well as treatment, of some forms of hypertensive vascular disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Altura, B M -- Altura, B T -- Gebrewold, A -- Ising, H -- Gunther, T -- HL18015/HL/NHLBI NIH HHS/ -- HL29600/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1984 Mar 23;223(4642):1315-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6701524" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arterioles/pathology ; *Blood Pressure ; Capillaries/pathology ; Magnesium/blood ; Magnesium Deficiency/pathology/*physiopathology ; Male ; *Microcirculation ; Rats ; Rats, Inbred Strains ; *Vasoconstriction ; Venules/pathology
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    Rapid expulsion of Trichinella spiralis in suckling rats (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-10-05
    Description: Orally administered Trichinella spiralis muscle larvae were rapidly expelled by rat pups suckling an immune dam. The immunity was delivered in the milk; substantial resistance was conferred on normal rat pups suckled for only 24 hours by a Trichinella-immune foster mother. The pups were protected by oral or systemic administration of specific serum antibodies. When infused into a normal lactating dam, these antibodies accumulated in the serum of her suckling pups.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Appleton, J A -- McGregor, D D -- AI 14490/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1984 Oct 5;226(4670):70-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6474191" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Suckling ; Antibodies/immunology ; Colostrum/immunology ; Female ; *Immunity, Maternally-Acquired ; Immunization, Passive ; Intestinal Diseases, Parasitic/*immunology/parasitology ; Intestinal Mucosa/parasitology ; Milk/*immunology ; Rats ; Trichinella/*immunology/physiology ; Trichinellosis/*immunology/parasitology
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    Inhibition of aldosterone production by an atrial extract (1984)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1984-06-01
    Description: Crude extracts of rat atria reduced the basal amount of aldosterone released from rat zona glomerulosa cells and partially inhibited aldosterone stimulation by adrenocorticotropic hormone and angiotensin II. The destruction of this activity by trypsin suggests that the active factor is a peptide, possibly atrial natriuretic factor. These data suggest that atrial natriuretic factor affects sodium excretion by the kidneys both directly and through the inhibition of aldosterone production.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Atarashi, K -- Mulrow, P J -- Franco-Saenz, R -- Snajdar, R -- Rapp, J -- New York, N.Y. -- Science. 1984 Jun 1;224(4652):992-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6326267" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenocorticotropic Hormone/pharmacology ; Aldosterone/*biosynthesis ; Angiotensin II/pharmacology ; Animals ; *Atrial Function ; Dogs ; Female ; Kidney/drug effects/metabolism ; Mineralocorticoid Receptor Antagonists/pharmacology ; Natriuresis/drug effects ; Rats ; Rats, Inbred Strains ; Trypsin/pharmacology
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    Salivary proline-rich protein genes on chromosome 8 of mouse (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-11-23
    Description: Endonuclease restriction (Hind III) fragments of DNA from Chinese hamster X mouse somatic cell hybrids hybridized with proline-rich protein complementary DNA clones only when the DNA was isolated from cells containing mouse chromosome 8, or a fragment of chromosome 8. The evidence suggests that proline-rich protein genes are located at the proximal portion of chromosome 8 toward the centromere.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Azen, E A -- Carlson, D M -- Clements, S -- Lalley, P A -- Vanin, E -- AM 19175/AM/NIADDK NIH HHS/ -- DEO 3658-19/DE/NIDCR NIH HHS/ -- GM 20069/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1984 Nov 23;226(4677):967-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6095444" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosome Mapping ; DNA Restriction Enzymes ; *Genes ; Humans ; Mice ; Mice, Inbred Strains ; Nucleic Acid Hybridization ; Peptides/*genetics ; Proline-Rich Protein Domains ; Protein Biosynthesis ; RNA, Messenger/genetics ; Salivary Proteins and Peptides/*genetics ; Species Specificity
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    Regulation of a hybrid gene by glucose and temperature in hamster fibroblasts (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-10-12
    Description: A novel eukaryotic hybrid gene has been constructed from the 5' sequence of a rat gene and the bacterial neomycin-resistance gene. After transfection into hamster fibroblasts, the neo transcripts can be induced to high levels by the absence of glucose. Furthermore, this hybrid gene can be regulated by temperature when it is introduced into a temperature-sensitive mutant cell line.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Attenello, J W -- Lee, A S -- CA-27607/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1984 Oct 12;226(4671):187-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6484570" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Cricetinae ; DNA, Recombinant ; Drug Resistance, Microbial ; Fibroblasts ; *Gene Expression Regulation ; Genes, Bacterial ; *Genes, Regulator ; Glucose/*pharmacology ; *HSP70 Heat-Shock Proteins ; Membrane Proteins/biosynthesis/*genetics ; Mutation ; Neomycin/pharmacology ; Rats ; Temperature ; Transcription, Genetic ; Transfection
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    Homology of genome of AIDS-associated virus with genomes of human T-cell leukemia viruses (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-08-31
    Description: A T lymphotropic virus found in patients with the acquired immune deficiency syndrome (AIDS) or lymphadenopathy syndrome has been postulated to be the cause of AIDS. Immunological analysis of this retrovirus and its biological properties suggest that it is a member of the family of human T-lymphotropic retroviruses known as HTLV. Accordingly, it has been named HTLV-III. In the present report it is shown by nucleic acid hybridization that sequences of the genome of HTLV-III are homologous to the structural genes (gag, pol, and env) of both HTLV-I and HTLV-II and to a potential coding region called pX located between the env gene and the long terminal repeating sequence that is unique to the HTLV family of retroviruses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arya, S K -- Gallo, R C -- Hahn, B H -- Shaw, G M -- Popovic, M -- Salahuddin, S Z -- Wong-Staal, F -- New York, N.Y. -- Science. 1984 Aug 31;225(4665):927-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6089333" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*microbiology ; Base Sequence ; Cloning, Molecular ; Dna ; DNA, Viral ; Deltaretrovirus/classification/*genetics ; Genes ; *Genes, Viral ; Humans ; *Nucleic Acid Hybridization ; RNA, Viral ; Repetitive Sequences, Nucleic Acid
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    The spiracular organ of sharks and skates: anatomical evidence indicating a mechanoreceptive role (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-11-23
    Description: The elasmobranch spiracular organ is a specialized receptor associated with the first visceral pouch. The structure of the sensory epithelium of the spiracular organ and the pattern of central termination of the afferent neurons that innervate it show that the spiracular organ is a mechanoreceptor closely related to the lateral line system of sense organs. Its position and orientation within the spiracular cleft suggest that it plays a role in proprioception or equilibrium-audition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barry, M A -- Boord, R L -- NS 11272/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1984 Nov 23;226(4677):990-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6505680" target="_blank"〉PubMed〈/a〉
    Keywords: Afferent Pathways/anatomy & histology ; Animals ; Fishes/*anatomy & histology ; Mechanoreceptors/*physiology/ultrastructure ; Microscopy, Electron, Scanning ; Sharks/*anatomy & histology ; Species Specificity
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    Fast and slow magnetic phenomena in focal epileptic seizures (1984)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1984-11-16
    Description: The magnetic fields associated with penicillin-induced focal epilepsy were measured in laboratory rats. Interictal magnetic spikes were similar to those previously observed in humans with focal seizure disorders. The magnetic fields of the seizure itself displayed both slow and fast phenomena, reversing in direction on opposite sides of the head.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barth, D S -- Sutherling, W -- Beatty, J -- 1-R01-NS20806-01/NS/NINDS NIH HHS/ -- 1K07NS00678-01A1/NS/NINDS NIH HHS/ -- 5-S07 RR07009/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1984 Nov 16;226(4676):855-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6436979" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Electroencephalography ; *Electromagnetic Fields ; *Electromagnetic Phenomena ; Electrophysiology ; Epilepsies, Partial/*physiopathology ; Humans ; Penicillins/pharmacology ; Rats ; Rats, Inbred Strains ; Seizures/physiopathology
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  • 81
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    Autoantibodies to a 64-kilodalton islet cell protein precede the onset of spontaneous diabetes in the BB rat (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-06-22
    Description: Spontaneous insulin-dependent diabetes mellitus (IDDM) in the BB rat is associated with the presence of antibodies to a 64-kilodalton rat islet cell protein. These protein antibodies appeared in young animals and remained for as long as 8 weeks before the clinical onset of IDDM. Antibodies to a 64-kilodalton human islet cell protein were found to be associated with human IDDM. Detection of the antibodies may therefore be used to predict an early immune reaction against pancreatic B cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baekkeskov, S -- Dyrberg, T -- Lernmark, A -- AM26190/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1984 Jun 22;224(4655):1348-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6374896" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoantibodies/*immunology ; Diabetes Mellitus, Experimental/*immunology ; Diabetes Mellitus, Type 1/immunology ; Humans ; Islets of Langerhans/*immunology ; Rats ; Rats, Inbred Strains ; Rats, Mutant Strains
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  • 82
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    Induction of pituitary lactotrope differentiation by luteinizing hormone alpha subunit (1984)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1984-11-02
    Description: Addition of gonadotropin releasing hormone to cultures of fetal rat pituitary induced differentiation of lactotropes as revealed by immunocytochemistry. Antiserum to luteinizing hormone (LH) (recognizing native LH), but not antiserum to LH-beta (recognizing both native LH and its beta subunit), inhibited this induction. Further addition of highly purified LH-alpha subunit in culture medium also induced lactotrope differentiation. Thus, the alpha subunit may have a specific biological activity of its own with probable practical use in clinical investigations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Begeot, M -- Hemming, F J -- Dubois, P M -- Combarnous, Y -- Dubois, M P -- Aubert, M L -- New York, N.Y. -- Science. 1984 Nov 2;226(4674):566-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6208610" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Fetus/physiology ; Glycoprotein Hormones, alpha Subunit ; Humans ; Luteinizing Hormone/immunology/pharmacology/physiology ; Peptide Fragments/*pharmacology/physiology ; Pituitary Gland/*drug effects/growth & development ; Pituitary Hormone-Releasing Hormones/pharmacology ; Pituitary Hormones, Anterior/*pharmacology/physiology ; Rats
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  • 83
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    Identification of DNA sequence responsible for 5-bromodeoxyuridine-induced gene amplification (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-08-31
    Description: Bromodeoxyuridine (BrdUrd) treatment of the prolactin nonproducing subclone of GH cells (rat pituitary tumor cells) induces amplification of a 20-kilobase DNA fragment including all of the prolactin gene coding sequences. This amplified DNA segment, which is flanked by two unamplified regions, thus designates a unit of BrdUrd-induced amplified sequence. Cloned DNA segments, 10.3 kilobases long, from the 5' end of the rat prolactin gene of BrdUrd-responsive and -nonresponsive cells, were ligated to the thymidine kinase gene of herpes simplex virus type 1 (HSV1TK), and the hybrid DNA was transferred to thymidine kinase-deficient mouse fibroblast cells by transfection. The HSV1TK gene and the rat prolactin gene were amplified together in drug-treated transfectants carrying the hybrid DNA HSV1TK gene and rat prolactin gene of BrdUrd-responsive GH cells. These results suggest that the 10.3-kilobase DNA segment at the 5' end of the rat prolactin gene of BrdUrd-responsive GH cells carries the information for drug-induced gene amplification (amplicon) and that another gene, such as the HSV1TK gene, is also amplified when the latter is placed adjacent to this segment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Biswas, D K -- Hartigan, J A -- Pichler, M H -- CA28218/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1984 Aug 31;225(4665):941-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6089335" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Bromodeoxyuridine/*pharmacology ; Cell Line ; Cloning, Molecular ; DNA/*genetics ; DNA, Recombinant ; *Gene Amplification ; Genes, Viral ; Mice ; Prolactin/genetics ; Rats ; Simplexvirus/genetics ; Thymidine Kinase/genetics ; Transfection
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  • 84
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    Anatomically distinct opiate receptor fields mediate reward and physical dependence (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-05-04
    Description: Rats never before exposed to opioids rapidly learned to press a lever for microinjections of morphine into the ventral tegmental area. Challenge by a narcotic antagonist produced no signs of physical dependence. Dependence was not seen after long-term morphine infusions into the ventral tegmentum but was seen after similar infusions into the periventricular gray region. Thus a major rewarding property of morphine is independent of the drug's ability to produce physical dependence. These data challenge models of drug addiction that propose physical dependence as necessary for the rewarding effects of opioids.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bozarth, M A -- Wise, R A -- New York, N.Y. -- Science. 1984 May 4;224(4648):516-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6324347" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Brain Chemistry ; Humans ; Microinjections ; Morphine/*pharmacology ; *Morphine Dependence ; Naloxone/pharmacology ; Rats ; Receptors, Opioid/*physiology ; *Reward
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  • 85
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    Polyene toxicity in renal medulla: injury mediated by transport activity (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-04-06
    Description: Polyene antibiotics such as amphotericin and nystatin increase membrane permeability and thus increase the amount of oxygen consumed in active electrolyte transport. In isolated perfused rat kidneys, the polyenes produced extensive injury to the medullary thick ascending limb, a segment of the nephron with limited oxygen supply. This damage was prevented if reabsorptive transport was inhibited by ouabain. Cell death under these circumstances thus appears to be mediated by increased oxygen demand for transport activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brezis, M -- Rosen, S -- Silva, P -- Spokes, K -- Epstein, F H -- AM18078/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1984 Apr 6;224(4644):66-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6322305" target="_blank"〉PubMed〈/a〉
    Keywords: Amphotericin B/adverse effects ; Animals ; Biological Transport, Active/drug effects ; Cell Membrane Permeability/drug effects ; Furosemide/pharmacology ; Glomerular Filtration Rate/drug effects ; Kidney Medulla/*drug effects/pathology ; Loop of Henle/drug effects ; Nystatin/adverse effects ; Ouabain/pharmacology ; Oxygen Consumption/drug effects ; Polyenes/*adverse effects ; Rats ; Sodium/metabolism ; Sodium-Potassium-Exchanging ATPase/metabolism
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  • 86
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    Comparative neuroscience holds promise for quiet revolutions (1984)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1984-08-03
    Description: The brain has diversified and advanced in evolution more than any other organ; the variety of nervous systems and behaviors among animal species is thus available for our exploitation. Comparative neuroscience is likely to reach insights so novel as to constitute revolutions in understanding the structure, functions, ontogeny, and evolution of nervous systems. This promise requires pursuit on a wide front, in respect to disciplines and in respect to the species, stages, and states compared. It also requires deliberate concentration on the differences among animals, in addition to the prevailing concern for the basic and common. Neglect of these challenges would be costly. Without due consideration of the neural and behavioral correlates of differences between higher taxa and between closely related families, species, sexes, and stages, we cannot expect to understand our nervous systems or ourselves.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bullock, T H -- New York, N.Y. -- Science. 1984 Aug 3;225(4661):473-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6740319" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Brain/*physiology ; Electrophysiology ; Humans ; Invertebrates ; Neurons/physiology ; Species Specificity ; Synapses/physiology ; Vertebrates
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  • 87
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    Essential role of insulin in transcription of the rat 25,000 molecular weight casein gene (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-12-14
    Description: Insulin is essential for the accumulation of rat casein messenger RNA (mRNA) in the presence of glucocorticoid and prolactin. The accumulation of certain mRNA's in other tissues has also been linked to insulin action. The present study shows that the accumulation effect on the 25,000 molecular weight rat casein mRNA does not reflect stabilization of the transcript by insulin. Rather, insulin is essential for its synthesis in the presence of glucocorticoid and prolactin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chomczynski, P -- Qasba, P -- Topper, Y J -- New York, N.Y. -- Science. 1984 Dec 14;226(4680):1326-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6390680" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caseins/biosynthesis/*genetics ; Culture Techniques ; *Gene Expression Regulation ; Half-Life ; Hydrocortisone/physiology ; Insulin/*physiology ; Mammary Glands, Animal/metabolism ; Molecular Weight ; Prolactin/physiology ; RNA, Messenger/physiology ; Rats ; Transcription, Genetic
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  • 88
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    Enhancement of sexual motivation in male rats by yohimbine (1984)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1984-08-24
    Description: Yohimbine hydrochloride, an alpha 2-adrenoceptor antagonist, increased sexual motivation in male rats as evidenced by increased mounting performance in mating tests conducted after genital anesthetization, increased percentage of male rats ejaculating in their first heterosexual encounter, and induction of copulatory behavior in sexually inactive male rats. These observations lead to the suggestion that alpha-adrenoceptors are important modulators of sexual arousal in intact male rats. These results indicate that pharmacological treatment of sexual (libido) dysfunction may be useful.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clark, J T -- Smith, E R -- Davidson, J M -- MH 21178/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1984 Aug 24;225(4664):847-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6474156" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aphrodisiacs/*pharmacology ; Copulation/drug effects ; Ejaculation/drug effects ; Male ; Motivation/drug effects ; Rats ; Receptors, Adrenergic/drug effects ; Sexual Behavior, Animal/*drug effects ; Yohimbine/*pharmacology
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  • 89
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    Enhanced neural response to familiar olfactory cues (1984)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1984-08-24
    Description: Norway rat pups have an enhanced olfactory bulb response to a familiar odor. A specific complex of glomeruli showed increased carbon-14-labeled 2-deoxy-D-glucose uptake in response to peppermint odor in 19-day-old pups exposed to peppermint on days 1 to 18 after birth, relative to control pups that had been exposed to clean air. The increased activity was not due to increased respiration of the familiar odor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coopersmith, R -- Leon, M -- MH 0037/MH/NIMH NIH HHS/ -- RRO 1192/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1984 Aug 24;225(4664):849-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6474157" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoradiography ; Deoxy Sugars/*metabolism ; Deoxyglucose/*metabolism ; *Odors ; Oils, Volatile ; Olfactory Bulb/*metabolism ; Plant Extracts ; *Plant Oils ; Rats ; Respiration ; *Smell
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  • 90
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    Differential NK cell and macrophage killing of hamster cells infected with nononcogenic or oncogenic adenovirus (1984)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1984-05-11
    Description: Hamster cells infected with highly oncogenic human adenovirus type 12 (Ad12) were resistant to lysis by natural killer cells and macrophages, compared to cells infected with nononcogenic adenovirus type 2 (Ad2). The data suggest that early adenovirus gene expression in hamster cells results in preferential survival of Ad12, compared to Ad2, infected cells in vivo, thus providing an explanation for the differences in the oncogenicities of these two transforming viruses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cook, J L -- Lewis, A M Jr -- CA 31732/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1984 May 11;224(4649):612-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6710160" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoviruses, Human/*immunology ; Animals ; Cell Transformation, Neoplastic/metabolism ; Cell Transformation, Viral ; Cricetinae ; Humans ; Immunity, Cellular ; Killer Cells, Natural/*physiology ; Macrophages/*physiology ; Mesocricetus ; Oncogenic Viruses/*immunology ; Rats
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  • 91
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    Characterization and molecular cloning of a human parvovirus genome (1984)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1984-12-07
    Description: The genome of the small human virus serologically associated with erythrocyte aplasia and erythema infectiosum (fifth disease) is shown to be a linear, nonpermuted, single-stranded DNA molecule with self-priming hairpin termini, properties which are characteristic of the genomes of the family Parvoviridae. This human parvovirus chromosome was molecularly cloned into bacterial plasmid vectors and the cloned DNA was used to explore its relatedness to other mammalian parvovirus serotypes by DNA:DNA hybridization. It is not related to the human adeno-associated viruses but does show a distant evolutionary relationship to genomes of the helper-independent parvoviruses of rodents. This strongly suggests that it is an autonomous parvovirus, and as such is the first example of a member of this group of common animal pathogens to cause disease in man.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cotmore, S F -- Tattersall, P -- CA29303/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1984 Dec 7;226(4679):1161-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6095448" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cloning, Molecular ; DNA, Single-Stranded/analysis ; DNA, Viral/*analysis ; DNA-Directed DNA Polymerase ; Dependovirus/genetics ; Escherichia coli/enzymology ; Nucleic Acid Denaturation ; Nucleic Acid Hybridization ; Parvoviridae/*genetics ; Plasmids ; Templates, Genetic
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  • 92
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    A single troponin T gene regulated by different programs in cardiac and skeletal muscle development (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-11-23
    Description: A cloned complementary DNA derived from a messenger RNA transiently present at low abundance levels in early chick embryonic skeletal muscle hybridizes to a messenger RNA present at high abundance levels in cardiac muscle. Genomic DNA hybridization and nucleotide sequence identity of complementary DNA's from both heart and skeletal muscle demonstrate that the messenger RNA's from both sources are encoded by the same gene. The encoded polypeptide is a troponin T sequence which is probably a cardiac isoform. This single copy troponin T isogene is governed by different regulatory programs in heart and skeletal muscle differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cooper, T A -- Ordahl, C P -- R01-GM32018/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1984 Nov 23;226(4677):979-82.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6095446" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chick Embryo ; Chickens ; DNA Restriction Enzymes ; *Gene Expression Regulation ; *Genes ; Heart/*embryology ; Muscles/*embryology/metabolism ; Myocardium/metabolism ; Nucleic Acid Hybridization ; RNA, Messenger/genetics ; Troponin/*genetics ; Troponin T
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  • 93
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    Regressive events in neurogenesis (1984)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1984-09-21
    Description: The development of most regions of the vertebrate nervous system includes a distinct phase of neuronal degeneration during which a substantial proportion of the neurons initially generated die. This degeneration primarily adjusts the magnitude of each neuronal population to the size or functional needs of its projection field, but in the process it seems also to eliminate many neurons whose axons have grown to either the wrong target or an inappropriate region within the target area. In addition, many connections that are initially formed are later eliminated without the death of the parent cell. In most cases such process elimination results in the removal of terminal axonal branches and hence serves as a mechanism to "fine-tune" neuronal wiring. However, there are now also several examples of the large-scale elimination of early-formed pathways as a result of the selective degeneration of long axon collaterals. Thus, far from being relatively minor aspects of neural development, these regressive phenomena are now recognized as playing a major role in determining the form of the mature nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cowan, W M -- Fawcett, J W -- O'Leary, D D -- Stanfield, B B -- EY-03653/EY/NEI NIH HHS/ -- NS-18506/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1984 Sep 21;225(4668):1258-65.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6474175" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; Brain/*growth & development ; Cricetinae ; *Nerve Degeneration ; Nerve Growth Factors/pharmacology ; Nervous System/*growth & development ; Purkinje Cells/physiology ; Rats ; Retina/growth & development ; Superior Colliculi/growth & development ; Synapses/physiology ; Visual Pathways/growth & development
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  • 94
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    Structure of the gene encoding the immunodominant surface antigen on the sporozoite of the human malaria parasite Plasmodium falciparum (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-08-10
    Description: The gene for the circumsporozoite (CS) protein of Plasmodium falciparum has been cloned and its nucleotide sequence determined. The gene encodes a protein of 412 amino acids as deduced from the nucleotide sequence. The protein contains 41 tandem repeats of a tetrapeptide, 37 of which are Asn-Ala-Asn-Pro and four of which are Asn-Val-Asp-Pro. Monoclonal antibodies against the CS protein of Plasmodium falciparum were inhibited from binding to the protein by synthetic peptides of the repeat sequence. The CS protein of Plasmodium falciparum and the CS protein of a simian malaria parasite, Plasmodium knowlesi, have two regions of homology, one of which is present on either side of the repeat. One region contains 12 of 13 identical amino acids. Within the nucleotide sequence of this region, 25 of 27 nucleotides are conserved. The conservation of these regions in parasites widely separated in evolution suggests that they may have a function such as binding to liver cells and may represent an invariant target for immunity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dame, J B -- Williams, J L -- McCutchan, T F -- Weber, J L -- Wirtz, R A -- Hockmeyer, W T -- Maloy, W L -- Haynes, J D -- Schneider, I -- Roberts, D -- New York, N.Y. -- Science. 1984 Aug 10;225(4662):593-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6204383" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antibodies, Monoclonal/immunology ; Antigens, Surface/*genetics/immunology ; Base Sequence ; Epitopes/genetics ; *Genes ; Humans ; Liver/parasitology ; Malaria/*immunology ; Plasmodium/genetics ; Plasmodium falciparum/*genetics/immunology ; *Protozoan Proteins
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  • 95
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    Cyclic AMP receptor protein: role in transcription activation (1984)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1984-05-25
    Description: The structure of this pleiotropic activator of gene transcription in bacteria and its interaction sites at promoter DNA's as well as the role of this protein in the RNA polymerase-promoter interactions are reviewed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉de Crombrugghe, B -- Busby, S -- Buc, H -- New York, N.Y. -- Science. 1984 May 25;224(4651):831-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6372090" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Binding Sites ; Crystallography ; DNA, Bacterial/metabolism ; DNA-Directed RNA Polymerases/metabolism ; Galactose/genetics ; *Gene Expression Regulation ; Lac Operon ; Operon ; Protein Conformation ; Receptors, Cyclic AMP/*physiology ; *Transcription, Genetic
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  • 96
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    Nucleotide sequence of a human Blym transforming gene activated in a Burkitt's lymphoma (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-08-03
    Description: The nucleotide sequence of a human Blym-1 transforming gene activated in a Burkitt's lymphoma cell line was determined. This sequence predicts a small protein of 58 amino acids that is 33 percent identical to the predicted product of chicken Blym-1, the activated transforming gene of chicken B cell lymphomas. Both the human and chicken Blym-1 genes exhibit significant identity to an amino-terminal region of transferrins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Diamond, A -- Devine, J M -- Cooper, G M -- CA 07250/CA/NCI NIH HHS/ -- CA 28946/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1984 Aug 3;225(4661):516-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6330897" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Burkitt Lymphoma/*genetics ; Cell Line ; *Cell Transformation, Neoplastic ; DNA Restriction Enzymes ; Humans ; *Oncogenes ; Structure-Activity Relationship ; Transcription, Genetic ; Transferrin/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 97
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    Activation of dormant genes in specialized cells (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-06-01
    Description: In several experimental systems the genomic capacity in specialized cells can be assessed by examining the activation of dormant genes. Since some of these specialized cells can be induced to change cell phenotype, all cell specializations do not necessarily involve irreversible genetic changes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DiBerardino, M A -- Hoffner, N J -- Etkin, L D -- GM 23635/GM/NIGMS NIH HHS/ -- GM 31479/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1984 Jun 1;224(4652):946-52.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6719127" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anura ; *Cell Differentiation ; Cell Fusion ; Cell Transformation, Neoplastic/metabolism ; Chickens ; Chromatin/physiology ; DNA/genetics/metabolism ; Drosophila ; Embryo, Mammalian/physiology ; Embryo, Nonmammalian ; Extremities/growth & development ; *Gene Expression Regulation ; Humans ; Hybrid Cells ; Iris/growth & development ; Methylation ; Mice ; Nuclear Transfer Techniques ; Phenotype ; Rats ; Xenopus
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 98
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    Haploid expression of a mouse testis alpha-tubulin gene (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-04-06
    Description: A complementary DNA clone for an alpha-tubulin has been isolated from a mouse testis complementary DNA library. The untranslated 3' end of this complementary DNA is homologous to two RNA transcripts present in postmeiotic cells of the testis but absent from meiotic cells and from several tissues including brain. The temporal expression of this alpha-tubulin complementary DNA provides evidence for the haploid expression of a mammalian structural gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Distel, R J -- Kleene, K C -- Hecht, N B -- GM 29224/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1984 Apr 6;224(4644):68-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6701535" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/metabolism ; Cloning, Molecular ; DNA/genetics ; Drosophila ; Gene Expression Regulation ; Haploidy ; Male ; Mice ; Nucleic Acid Hybridization ; Rats ; Spermatids/metabolism ; Spermatogenesis ; Spermatozoa/physiology ; Testis/*metabolism ; Tubulin/*genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 99
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    External imaging of cerebral muscarinic acetylcholine receptors (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-01-20
    Description: A radioiodinated ligand that binds to muscarinic acetylcholine receptors was shown to distribute in the brain by a receptor-mediated process. With single-photon-emission imaging techniques, radioactivity was detected in the cerebrum but not in the cerebellum, whereas with a flow-limited radiotracer, radioactivity was detected in cerebrum and cerebellum. Single-photon-emission computed tomography showed good definition of the caudate putamen and cortex in man.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eckelman, W C -- Reba, R C -- Rzeszotarski, W J -- Gibson, R E -- Hill, T -- Holman, B L -- Budinger, T -- Conklin, J J -- Eng, R -- Grissom, M P -- New York, N.Y. -- Science. 1984 Jan 20;223(4633):291-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6608148" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Brain Chemistry ; Cats ; Caudate Nucleus/analysis ; Cerebellum/analysis ; Dogs ; Humans ; Putamen/analysis ; Quinuclidines/metabolism ; Quinuclidinyl Benzilate/metabolism ; Radioligand Assay ; Rats ; Receptors, Muscarinic/*analysis/metabolism ; Tomography, Emission-Computed
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 100
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    Decreased neuronal inhibition in vitro after long-term administration of ethanol (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-06-22
    Description: The pathophysiology of brain dysfunction was studied with an animal model of chronic alcoholism. Rats were fed a liquid diet with or without ethanol for 20 weeks and then the diet without ethanol for three more weeks. Hippocampal slices were prepared and intracellular recordings were obtained from dentate granule and CA1 cells. Significant depression of orthodromically elicited inhibitory postsynaptic potentials and postspike afterhyperpolarizations was observed in neurons from ethanol-exposed animals. No differences were observed in other active or passive membrane characteristics. These results suggest that a loss of neuronal inhibition could contribute to brain dysfunction in chronic alcoholism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Durand, D -- Carlen, P L -- New York, N.Y. -- Science. 1984 Jun 22;224(4655):1359-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6328654" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials/drug effects ; Alcoholism/physiopathology ; Animals ; Calcium/physiology ; Ethanol/*pharmacology ; Humans ; Ion Channels/drug effects ; Male ; Membrane Potentials/drug effects ; Neurons/*drug effects ; Rats ; Rats, Inbred Strains
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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