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  • Rats  (164)
  • American Association for the Advancement of Science (AAAS)  (164)
  • American Physical Society (APS)
  • 1980-1984  (164)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (164)
  • American Physical Society (APS)
Years
Year
  • 1
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    Lung water quantitation by nuclear magnetic resonance imaging (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-06-18
    Description: Nuclear magnetic resonance imaging was used to determine quantitatively the water distribution of saline-filled and normal rat lungs in both isolated lung and in situ preparations. Regional lung edema was easily detected. Studies of an isolated lung fragment indicate an accuracy of better than 1 percent and images of H2O/D2O phantoms indicate an average error of 2.7 percent.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hayes, C E -- Case, T A -- Ailion, D C -- Morris, A H -- Cutillo, A -- Blackburn, C W -- Durney, C H -- Johnson, S A -- 2 R01 HL 23746-03/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1982 Jun 18;216(4552):1313-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7079763" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Body Water/*analysis ; Lung/*analysis ; Magnetic Resonance Spectroscopy ; Pulmonary Edema/diagnosis ; Rats
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Biopterin cofactor biosynthesis: independent regulation of GTP cyclohydrolase in adrenal medulla and cortex (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-17
    Description: Guanosine triphosphate cyclohydrolase, the enzyme that is apparently rate-limiting in biopterin biosynthesis, is increased in adrenal cortex and medulla of rats treated with insulin or reserpine. Denervation and hypophysectomy block the increase in medullary and cortical enzyme activity, respectively, whereas cycloheximide presents the increase in both tissues. These results provide evidence for induction and regulation of guanosine triphosphate cyclohydrolase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Viveros, O H -- Lee, C L -- Abou-Donia, M M -- Nixon, J C -- Nichol, C A -- New York, N.Y. -- Science. 1981 Jul 17;213(4505):349-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7017928" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenal Cortex/drug effects/*enzymology ; Adrenal Glands/innervation ; Adrenal Medulla/drug effects/*enzymology ; Aminohydrolases/*metabolism ; Animals ; Biopterin/*biosynthesis ; Cycloheximide/pharmacology ; Denervation ; GTP Cyclohydrolase/*metabolism ; Hypophysectomy ; Insulin/pharmacology ; Kinetics ; Male ; Organ Specificity ; Pteridines/*biosynthesis ; Rats ; Reserpine/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Thyroidectomy increases rat hepatic ferritin iron (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Winkelmann, J C -- Mariash, C N -- Towle, H C -- Oppenheimer, J H -- AM00800/AM/NIADDK NIH HHS/ -- AM19812/AM/NIADDK NIH HHS/ -- AM26919/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Jul 31;213(4507):569-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6166047" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Ferritins/*metabolism ; Hypothyroidism/metabolism ; Iron/*metabolism ; Liver/*metabolism ; Molecular Weight ; Orotic Acid/metabolism ; Polyribosomes/metabolism ; RNA/genetics ; Rats ; *Thyroidectomy
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Selective protection of methionine enkephalin released from brain slices by enkephalinase inhibition (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-06-05
    Description: Methionine enkephalin release was evoked by depolarization of slices from rat striatum with potassium. In the presence of 0.1 microM thiorphan [(N(R,S)-3-mercapto-2-benzylpropionyl)glycine], a potent inhibitor of enkephalin dipeptidyl carboxypeptidase (enkephalinase), the recovery of the pentapeptide in the incubation medium was increased by about 100 percent. A similar effect was observed with the dipeptide phenylalanylalanine, a selective although less potent enkephalinase inhibitor. Inhibition of other known enkephalin-hydrolyzing enzymes--aminopeptidase by 0.1 mM puromycin or angiotensin-converting enzyme by 1 microM captopril--did not significantly enhance the recovery of released methionine enkephalin. These data indicate that enkephalinase is critically involved in the inactivation of the endogenous opioid peptide released from striatal neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Patey, G -- De La Baume, S -- Schwartz, J C -- Gros, C -- Roques, B -- Fournie-Zaluski, M C -- Soroca-Lucas, E -- New York, N.Y. -- Science. 1981 Jun 5;212(4499):1153-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7015510" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acids, Sulfur/*pharmacology ; Animals ; Corpus Striatum/drug effects/*metabolism ; Endorphins/*secretion ; Enkephalin, Methionine ; Enkephalins/antagonists & inhibitors/*secretion ; Mice ; Neprilysin ; Potassium/pharmacology ; *Protease Inhibitors/*pharmacology ; Rats ; Thiorphan ; Tiopronin/analogs & derivatives/*pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Phagocytosis: flow cytometric quantitation with fluorescent microspheres (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-01-01
    Description: The phagocytosis of uniform fluorescent latex particles by pulmonary macrophages in the rat was analyzed by flow cytometric methods. The percentage of phagocytic macrophages and the number of particles per cell were determined from cell-size and fluorescence histograms. A comparison of in vivo and in vitro phagocytosis data showed that the percentage of phagocytic lavaged macrophages reflected the availability of instilled particles. With sodium azide used to model phagocytosis inhibition, it was shown that the percentage of phagocytic cells and the number of particles per cell can be determined simultaneously.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Steinkamp, J A -- Wilson, J S -- Saunders, G C -- Stewart, C C -- AI 15563/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1982 Jan 1;215(4528):64-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7053559" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Flow Cytometry/methods ; Macrophages/*physiology ; Microspheres ; *Phagocytosis ; Pulmonary Alveoli/cytology ; Rats ; Spectrometry, Fluorescence/methods
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    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
    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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  • 7
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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)
    Details
    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
    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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  • 8
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    Pro-adrenocorticotropin/endorphin-derived peptides: coordinate action on adrenal steroidogenesis (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    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
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Body weight and composition in laboratory rats: effects of diets with high or low protein concentrations (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-01-09
    Description: Adult rats fed high concentrations of dietary protein for 9 weeks gained more weight than rats fed isoenergetic diets containing less protein. There were no significant differences in tail and body lengths among several groups of rats on diets containing different amounts of protein; however, total body fat was significantly greater in the rats fed on diets containing 25 percent protein compared to the rats fed 5 percent protein diets. These findings suggest that the role of dietary protein in obesity and other conditions deserves further scrutiny.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Donald, P -- Pitts, C C -- Pohl, S L -- AM05955/AM/NIADDK NIH HHS/ -- AM22125/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Jan 9;211(4478):185-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7444462" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; Animals, Laboratory ; *Body Composition ; *Body Weight ; Dietary Proteins/*metabolism ; Energy Intake ; Obesity/metabolism ; Rats
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Immunohistochemical demonstration of a testicular substance related to luteinizing hormone-releasing hormone (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-09-11
    Description: A substance related to luteinizing hormone-releasing hormone was demonstrated, by immunohistochemical procedures, in the cytoplasm of interstitial cells within the rat testes. In many seminiferous tubules, nuclei of spermatogonial cells were also immunopositive. Both cytoplasmic and nuclear fractions of testicular homogenates contain immunoreactive compounds, and this report identifies which cell types contain this substance. The localization of a peptide hormone within the nucleus of a target cell population may indicate its mode of action.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paull, W K -- Turkelson, C M -- Thomas, C R -- Arimura, A -- HD14761/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1981 Sep 11;213(4513):1263-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7022653" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibody Specificity ; Cell Nucleus/metabolism ; Cytoplasm/metabolism ; Gonadotropin-Releasing Hormone/immunology/*metabolism ; Humans ; Immunologic Techniques ; Leydig Cells/metabolism ; Male ; Rats ; Spermatogonia/metabolism ; Testis/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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