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  • Animals  (2.203)
  • American Association for the Advancement of Science (AAAS)  (2.203)
  • 1980-1984  (2.203)
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Verlag/Herausgeber
  • American Association for the Advancement of Science (AAAS)  (2.203)
  • Springer  (1)
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Jahr
  • 21
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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
    Publikationsdatum: 1980-12-05
    Beschreibung: 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〉
    Schlagwort(e): 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
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 22
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    Bronchial bifurcations and respiratory mass transport (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1980-04-04
    Beschreibung: A new transport mechanism explains the importance of the shape of bronchial bifurcations in the transfer of gases and particles between the atmosphere and the alveoli. Photographs of flow visualization experiments illustrate the effect in models of bronchial branching. The mechanism provides a means of nondiffusional transport that helps to explain normal respiratory exchange of gases as well as successful ventilation with very low tidal volumes, as in some lung diseases and in the high-frequency panting of dogs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Haselton, F R -- Scherer, P W -- New York, N.Y. -- Science. 1980 Apr 4;208(4439):69-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7361109" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bronchi/*anatomy & histology/physiology ; Humans ; *Respiration ; Tidal Volume
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 23
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    Immunohistochemical localization of amelogenins in enameloid of lower vertebrate teeth (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1980-03-21
    Beschreibung: 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〉
    Schlagwort(e): Amelogenesis ; Animals ; Dental Enamel Proteins/immunology/*metabolism ; Fluorescent Antibody Technique ; Species Specificity ; Tooth/*anatomy & histology ; Vertebrates/*anatomy & histology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 24
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    Comparison of the nucleic acid sequence of anglerfish and mammalian insulin mRNA's from cloned cDNA's (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1980-12-19
    Beschreibung: Anglerfish (Lophius americanus) insulin complementary DNA was cloned in bacterial plasmids, and its sequence was determined. Fish insulin messenger RNA is larger (1.5 times) than the messenger RNA encoding mammalian (rat and human) insulin, in part because of a larger C peptide (an additional six amino acids or 18 nucleotides in length) but mainly because of increases in the 5' and 3' untranslated regions. Comparison of the fish, rat, and human insulin messenger RNA (from the complementary DNA) reveals that, in addition to the regions coding for the A and B peptides, sequence conservation is limited to a segment within the 5' untranslated region which may be involved in ribosomal binding, two small segments of the signal peptide, and two stretches of sequence in the 3' untranslated region.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hobart, P M -- Shen, L P -- Crawford, R -- Pictet, R L -- Rutter, W J -- AM 21344/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1980 Dec 19;210(4476):1360-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7001633" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; *Biological Evolution ; Cloning, Molecular ; Codon ; Fishes/*genetics ; Insulin/*genetics ; Nucleic Acid Conformation ; Proinsulin/genetics ; Protein Biosynthesis ; Protein Precursors/genetics ; RNA, Messenger/*genetics
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 25
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    Phospholipid methylation and biological signal transmission (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1980-09-05
    Beschreibung: 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〉
    Schlagwort(e): 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
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 26
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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
    Publikationsdatum: 1980-01-04
    Beschreibung: 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〉
    Schlagwort(e): 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
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 27
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    Chronic arthritis in goats caused by a retrovirus (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1980-02-29
    Beschreibung: A virus was isolated from an adult goat with chronic arthritis and shown to belong to the retrovirus group by electron microscopy and biochemical methods. Inoculation of the virus into cesarean-derived specific-pathogen-free goats' kids produced arthritic lesions similar to those in the spontaneous disease. Vrus was reisolated from the experimentally induced lesions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crawford, T B -- Adams, D S -- Cheevers, W P -- Cork, L C -- New York, N.Y. -- Science. 1980 Feb 29;207(4434):997-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6153243" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Arthritis, Infectious/microbiology/*veterinary ; Encephalomyelitis/microbiology/*veterinary ; Goats/*microbiology ; RNA-Directed DNA Polymerase/metabolism ; Retroviridae/ultrastructure ; Virus Diseases/complications/transmission/*veterinary
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 28
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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
    Publikationsdatum: 1980-10-10
    Beschreibung: 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〉
    Schlagwort(e): 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
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 29
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    Modeling coordination sites in metallobiomolecules (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1980-07-11
    Beschreibung: Synthetic metal complexes can closely approach the properties of metal ions in proteins and yield useful information concerning biological structure and function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ibers, J A -- Holm, R H -- New York, N.Y. -- Science. 1980 Jul 11;209(4453):223-35.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7384796" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Binding Sites ; Electron Transport ; Humans ; Iron-Sulfur Proteins ; *Metalloproteins ; *Metals ; Molecular Conformation ; Myoglobin ; Oxygen/blood ; Oxyhemoglobins ; Protein Binding ; Protein Conformation
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 30
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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
    Publikationsdatum: 1980-10-03
    Beschreibung: 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〉
    Schlagwort(e): 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
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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