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  • Artikel  (123)
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  • 1995-1999
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  • 1
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    Sulfhydryl groups and the monodeiodination of thyroxine to triiodothyronine (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-02-24
    Beschreibung: Sulfhydryl reagents exert a profound influence on the monodeiodination of thyroxine to triiodothyronine by rat and sheep tissues in vitro. A marked dithiothreitol-induced increase in the monodeiodination by fetal sheep liver homogenates suggests that the characteristically low conversion in fetal tissues is related more to the status of sulfhydryl groups than to a deficiency of the monodeiodinating enzyme.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chopra, I J -- New York, N.Y. -- Science. 1978 Feb 24;199(4331):904-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/622575" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Dithiothreitol/pharmacology ; Female ; Fetus/*metabolism ; Liver/embryology/*metabolism ; Pregnancy ; Rats ; Sheep ; Sulfhydryl Compounds/*metabolism ; Sulfhydryl Reagents/pharmacology ; Thyroxine/*metabolism ; Triiodothyronine/*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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  • 2
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    Rabies viruses increase in virulence when propagated in neuroblastoma cell culture (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-03-10
    Beschreibung: Several strains of attenuated rabies virus lacking the capacity to kill adult mice acquired a high lethal potential for mice after one to five serial passages in murine or human neuroblastoma cells. The virulence acquired after passage in neuroblastoma cells is a stable genetic trait retained during subsequent passage of viruses in nonneuroblastoma cell systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clark, H F -- New York, N.Y. -- Science. 1978 Mar 10;199(4333):1072-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/628831" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Line ; Cells, Cultured ; Mice ; Neuroblastoma/*microbiology ; Neurons/microbiology ; Rabies Vaccines/toxicity ; Rabies virus/genetics/*pathogenicity ; Vaccines, Attenuated/toxicity ; Virus Replication
    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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  • 3
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    Murine lymphoma-induced immunosuppression: requirement for direct tumour cell contact (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-04-07
    Beschreibung: The FBL-3 lymphoma cell line caused impaired antibody formation in vivo when injected into mice intraperitoneally, and in vitro when added to normal syngeneic spleen cells immunized in vitro with sheep erythrocytes. Immunosuppression occurred only when intact viable tumor cells were cocultivated with the normal spleen cells. As few as 10(5) FBL-3 cells, when added to 5 X 10(6) normal cells, impaired antibody formation. However, cell-free extracts of filtrates from even much larger numbers of tumor cells did not affect antibody formation, either in vitro or in vivo. Heating the tumor cells at 56 degrees C or irradiation with as little as 1000 rads completely abolished immunosuppressive activity, both in vitro and in vivo. Separation of viable tumor cells from target antibody-forming cells by cell-impermeable membranes prevented immunosuppression, showing that direct cell-to-cell contact is required for immunosuppression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cimprich, R S -- Specter, S -- Friedman, H -- New York, N.Y. -- Science. 1978 Apr 7;200(4337):60-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/635572" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Antibody Formation ; Cell Communication ; Cells, Cultured ; *Immunosuppression ; Lymphoma/*immunology ; Neoplasms, Experimental/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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  • 4
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    Tricyclic antidepressants: long-term treatment increases responsivity of rat forebrain neurons to serotonin (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-12-22
    Beschreibung: Long-term treatment of rats with clinically effective tricyclic antidepressant drugs induced a selective increase in the inhibitory response of forebrain neurons to serotonin applied by microiontophoresis. Long-term administration of some related drugs which lack antidepressant efficacy failed to induce such a change. The enhanced response to serotonin induced by the clinically active tricyclic drugs took 1 to 2 weeks to develop, a time course which correlates with the delayed onset of therapeutic effects in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉de Montigny, C -- Aghajanian, G K -- New York, N.Y. -- Science. 1978 Dec 22;202(4374):1303-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/725608" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Action Potentials/drug effects ; Animals ; Antidepressive Agents, Tricyclic/*pharmacology ; Decerebrate State ; Drug Synergism ; Geniculate Bodies/*drug effects ; Hippocampus/*drug effects ; Male ; Neural Inhibition/drug effects ; Norepinephrine/pharmacology ; Pyramidal Tracts/drug effects ; Rats ; Receptors, Serotonin/*drug effects ; Serotonin/*pharmacology ; gamma-Aminobutyric Acid/pharmacology
    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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  • 5
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    The stomach signals satiety (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-07-14
    Beschreibung: Inflatable pyloric cuffs and stomach tubes were implanted in rats. With the cuff inflated and a valve to limit intragastric pressure to that accompanying normal satiety, they drank only as much when they had been deprived of food for 12 hours as without inflation of the cuff. However, they overdrank with the cuff inflated when they had been water deprived for 12 hours. When 10 ml of milk was withdrawn from the stomach with the cuff inflated, compensatory drinking occurred. Further, compensatory drinking also occurred when milk escaped from the stomach into the duodenum. Satiety signals thus arise from the stomach.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Deutsch, J A -- Young, W G -- Kalogeris, T J -- New York, N.Y. -- Science. 1978 Jul 14;201(4351):165-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663647" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Drinking Behavior/physiology ; Duodenum/physiology ; Food Deprivation ; Male ; Rats ; Satiation/*physiology ; Satiety Response/*physiology ; Stomach/*physiology
    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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  • 6
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    Nucleosome arcs and helices (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-10-20
    Beschreibung: Crystals and other regular arrangements of nucleosome cores have been obtained and analyzed in the electron microscope. Two types of regular structures have been studied in detail, the nucleosome arcs and cylinders. The latter are composed of concentric cylindrical layers of intertwined right-handed helices of nucleosome cores. These studies lead to the following conclusions and concepts. The overall structure of the nucleosome core is a short, wedge-shaped cylinder measuring about 110 by 110 by 60 angstroms. Nucleosome cores interact primarily between top and bottom planes. Nucleosome cores exhibit large conformational variability. A pivot allowing two degrees of rotational freedom is postulated in the region of the 70th base pair to account for this property of the nucleosome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dubochet, J -- Noll, M -- New York, N.Y. -- Science. 1978 Oct 20;202(4365):280-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/694532" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Chromatin/*ultrastructure ; Crystallography ; Macromolecular Substances ; Micrococcal Nuclease/metabolism ; Microscopy, Electron/methods ; Rats
    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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  • 7
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    beta-Adrenergic receptors in aged rat brain: reduced number and capacity of pineal gland to develop supersensitivity (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-07-07
    Beschreibung: The density but not the affinity of beta-adrenergic receptors declined significantly with age in rat pineal gland, corpus striatum, and cerebellum, as determined by the binding of tritiated dihydroalprenolol. Exposing rats to light for 12 hours increased the binding of this radioligand in 3-month-old but not in 24-month-old rats. The reduced responsiveness to catecholamines seen in aging may be due to a decrease in the number of beta-adrenergic receptors which, in turn, may be caused by an impaired capacity of receptors in aged animals to adapt to changes in adrenergic neuronal input.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Greenberg, L H -- Weiss, B -- New York, N.Y. -- Science. 1978 Jul 7;201(4350):61-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/208145" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Aging ; Alprenolol/analogs & derivatives/metabolism ; Animals ; Brain/*metabolism ; Cerebellum/metabolism ; Circadian Rhythm ; Corpus Striatum/metabolism ; Kinetics ; Light ; Male ; Neuroglia/metabolism ; Pineal Gland/*metabolism ; Rats ; Receptors, Adrenergic/*metabolism ; Receptors, Adrenergic, beta/*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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  • 8
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    Subsynaptic plate perforations: changes with age and experience in the rat (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-12-08
    Beschreibung: The relative frequency of appearance of discontinuities in the postsynaptic thickening, or perforations in the subsynaptic plate, increased with age and experience. Rats reared from weaning in complex or social environments had a significantly higher proportion of occipital cortical synapses with perforations than did rats reared in isolation. In addition, the relative frequency of these perforations more than tripled between 10 and 60 days of age. Shifts in the frequency of perforations can occur independently of changes in the size of synpases. This result suggests a new potential mechanism of synaptic plasticity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Greenough, W T -- West, R W -- DeVoogd, T J -- New York, N.Y. -- Science. 1978 Dec 8;202(4372):1096-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715459" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Aging ; Animals ; Cerebral Cortex/ultrastructure ; Environment ; Male ; Occipital Lobe/*ultrastructure ; Rats ; Synapses/ultrastructure ; Synaptic Membranes/*ultrastructure
    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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  • 9
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    Early maternal separation increases gastric ulcer risk in rats by producing a latent thermoregulatory disturbance (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-07-28
    Beschreibung: Rat pups that are separated early from their mothers, at postnatal day 15, become hypothermic when subjected to physical restraint on postnatal day 30. Restraint of separated pups also elicits an unusually high incidence of gastric erosions, as well as insomnia and an increase in quiet wakefulness. If hypothermia during restraint is prevented, neither the erosions nor the behavioral responses occur. Rat pups separated at the customary age (postnatal day 22) do not become hypothermic during restraint, and the restraint of such pups is not associated with either gastric erosion or insomnia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ackerman, S H -- Hofer, M A -- Weiner, H -- New York, N.Y. -- Science. 1978 Jul 28;201(4353):373-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/566471" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn/physiology ; Arousal/physiology ; Behavior, Animal/physiology ; *Body Temperature Regulation ; Food Deprivation ; Humans ; *Maternal Deprivation ; Rats ; Restraint, Physical ; Sleep/physiology ; Stomach Ulcer/*etiology ; *Stress, Psychological/physiology ; Wakefulness/physiology
    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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  • 10
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    Chronically decerebrate rats demonstrate satiation but not bait shyness (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-07-21
    Beschreibung: Taste substances applied to the oral cavity result in either ingestion or rejection, each with a characteristic muscular response pattern. These responses are the same in decerebrate and intact rats; the caudal brainstem appears to be the neural substrate of ingestion and rejection responses. The experiment determined whether decerebrates can alter these discriminative responses as a function of food deprivation or toxicosis. Food-deprived decerebrate rats, like intact ones, ingested a taste substance they had rejected when sated. However, these same decerebrates, in contrast to controls, neither rejected nor decreased ingestive reactions to a novel taste after that taste had been repeatedly paired with lithium chloride-induced illness. Although the forebrain may be important for integrating ingestion, some aspects of this control seem to be represented in caudal brain areas.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grill, H J -- Norgren, R -- New York, N.Y. -- Science. 1978 Jul 21;201(4352):267-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663655" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Arousal/physiology ; Association Learning/*physiology ; Brain Stem/*physiology ; *Decerebrate State ; Feeding Behavior/*physiology ; Food Deprivation ; Hypothalamus/physiology ; Learning/*physiology ; Lithium ; Rats ; Satiation/physiology ; Sucrose ; Taste/physiology
    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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  • 11
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    Immunoassay of androgen binding protein in blood: a new approach for study of the seminiferous tubule (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-04-07
    Beschreibung: Androgen binding protein, a secretory product of seminiferous tubules, was isolated by means of affinity chromatography. A radioimmunoassay was developed and used to identify androgen binding protein in rat plasma. The ability to measure a testicular protein in blood provides a new method for investigation of seminiferous tubular physiology.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gunsalus, G L -- Musto, N A -- Bardin, W -- New York, N.Y. -- Science. 1978 Apr 7;200(4337):65-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/635573" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Androgens/metabolism ; Animals ; Blood-Testis Barrier ; Carrier Proteins/*blood/metabolism ; Castration ; Male ; Molecular Weight ; Radioimmunoassay/methods ; Rats ; Seminiferous Tubules/*metabolism ; Testis/*metabolism ; Testosterone/pharmacology
    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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  • 12
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    Neural factors contribute to atherogenesis (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-01-27
    Beschreibung: Electron microscopic evidence of early atherogenic changes in the aorta and coronary arteries was obtained in normal fed, conscious, unrestrained rats receiving electrical stimulation in the lateral hypothalamus for periods of up to 62 days. Hypertension and hypercholesterolemia were not etiologic factors. In view of recent observations concerning neuropsychological mechanisms in human ischemic heart disease, the findings raise the possibility that the human central nervous system has a role in the development of atherosclerotic lesions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gutstein, W H -- Harrison, J -- Parl, F -- Ku, G -- Avtable, M -- New York, N.Y. -- Science. 1978 Jan 27;199(4327):449-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/619468" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Aorta/pathology ; Arteriosclerosis/*etiology/pathology/physiopathology ; Blood Pressure ; Cholesterol/blood ; Coronary Vessels/pathology ; *Disease Models, Animal ; Electric Stimulation ; Hypothalamus/*physiopathology ; Male ; Rats ; Stress, Physiological/*complications
    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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  • 13
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    Aphagia and adipsia after preferential destruction of nerve cell bodies in hypothalamus (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-11-03
    Beschreibung: Microinjections of the excitatory neurotoxin kainic acid into the lateral hypothalamus of rats produced a period aphagia and adipsia. Kainate-treated rats displayed transient motor effects during the first hours after the injection but did not show the persisting sensory-motor and arousal disturbances typically observed in animals with electrolytic lesions in this part of the hypothalamus. Histological examination revealed a significant reduction in the number of nerve cell bodies in the lateral hypothalamus. Silver-stained material indicated no evidence of damage to fiber systems passing through the affected region. Assays of dopamine in hypothalamus, striatum, and telencephalon did not indicate significant differences between experimental and control animals. These results are in agreement with recent reports of the anatomical and biochemical effects of intracerebral kainic acid injections and suggest that the observed effect on feeding behavior is related to the destruction of neurons in the lateral hypothalamus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grossman, S P -- Dacey, D -- Halaris, A E -- Collier, T -- Routtenberg, A -- New York, N.Y. -- Science. 1978 Nov 3;202(4367):537-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/705344" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Drinking Behavior/drug effects/*physiology ; Feeding Behavior/drug effects/*physiology ; Hypothalamus/cytology/drug effects/*physiology ; Kainic Acid/pharmacology ; Male ; Motor Activity/drug effects ; Rats ; Thalamic Nuclei/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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  • 14
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    Phagocytosis of light- and dark-adapted rod outer segments by cultured pigment epithelium (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-11-03
    Beschreibung: Pigment epithelial cells in culture retain their ability to phagocytize rod outer segments. These cells phagocytize rod outer segments isolated from light-adapted rats, or from dark-adapted rats killed after the time at which the lights would normally be turned on. However, they phagocytize for fewer rod outer segments prepared in the dark from the retinas of rats killed before the onset of the normal light cycle. Phagocytosis of dark rod outer segments is variable, but that of light outer segments is reproducible. It is postulated that the effect of light is to synchronize the chemical events that occur at the surface of the rods to prepare them for phagocytosis. These processes also occur in the dark, but more slowly and irregularly than in the light.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hall, M O -- New York, N.Y. -- Science. 1978 Nov 3;202(4367):526-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/568310" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Culture Techniques ; Dark Adaptation ; Energy Metabolism ; Light ; Phagocytosis ; Photoreceptor Cells/*physiology ; Pigment Epithelium of Eye/*physiology/ultrastructure ; Rats
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 15
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    Diazepam inhibits myoblast fusion and expression of muscle specific protein synthesis (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-05-05
    Beschreibung: The presence of diazepam in culutres of chicken embryo myoblasts arrests normal muscle cell differentiation. High concentrations of the drug reversibly prevent myoblasts from fusing to form multinucleated myotubes. Lower concentrations of diazepam allow cell fusion to occur, but inhibit the synthesis and accumulation of myosin heavy chain, implying that cell fusion does not obligate myoblasts to synthesize and accumulate large quantities of muscle specific protein. The effect of diazepam on muscle cells in culture is direct and specific.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bandman, E -- Walker, C R -- Strohman, R C -- New York, N.Y. -- Science. 1978 May 5;200(4341):559-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/565534" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Differentiation/drug effects ; Cell Fusion/drug effects ; Cells, Cultured ; Chick Embryo ; Diazepam/*pharmacology ; Dose-Response Relationship, Drug ; Macromolecular Substances ; Muscles/cytology/*drug effects ; Myosins/*biosynthesis
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 16
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    Opiate peptide modulation of amino acid responses suggests novel form of neuronal communication (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-03-31
    Beschreibung: Mouse spinal neurons grown in tissue culture were used to study the electrophysiological pharmacology of the opiate peptide leucine-enkephalin. Enkephalin depressed glutamate-evoked responses in a noncompetitive manner independent of any other effects on membrane properties. The results demonstrate a neuromodulatory action of opiate peptide functionally distinct from the conventional neurotransmitter class of operation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barker, J L -- Neale, J H -- Smith, T G Jr -- Macdonald, R L -- New York, N.Y. -- Science. 1978 Mar 31;199(4336):1451-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/204016" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Cells, Cultured ; Endorphins/*pharmacology ; Enkephalins/antagonists & inhibitors/*pharmacology ; Excitatory Amino Acid Antagonists ; Glutamates/*pharmacology ; Iontophoresis ; Naloxone/pharmacology ; Neurons/*drug effects ; Spinal Cord ; Synapses/*drug effects ; Synaptic Transmission/*drug effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 17
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    Loss of division potential in vitro: aging or differentiation? (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-12-15
    Beschreibung: We have examined the hypothesis that diploid cells grown in vitro age, and propose that only proliferative potential and not life-span is telescoped. We suggest that explanted or transplanted diploid cells are driven to divide by the process of subculturing in vitro or in vivo and, in response to this pressure, also complete their differentiation and become refractory to further mitotic stimulation. We conclude that differentiation rather than "mortality" distinguishes diploid from transformed cells and that the former may not age in vitro, but are lost because culture methods are selective for cycling cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bell, E -- Marek, L F -- Levinstone, D S -- Merrill, C -- Sher, S -- Young, I T -- Eden, M -- New York, N.Y. -- Science. 1978 Dec 15;202(4373):1158-63.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/725592" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Cell Cycle ; *Cell Differentiation ; *Cell Division ; *Cell Survival ; Cells, Cultured ; Fibroblasts
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 18
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    Morphine tolerance: is there evidence for a conditioning model? (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-04-21
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hayes, R L -- Mayer, D J -- New York, N.Y. -- Science. 1978 Apr 21;200(4339):343-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/635595" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Behavior, Animal/physiology ; Conditioning (Psychology)/*physiology ; *Drug Tolerance ; Morphine/*pharmacology ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 19
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    Stimulation of dopamine synthesis in caudate nucleus by intrastriatal enkephalins and antagonism by naloxone (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-05-05
    Beschreibung: The intraventricular injection of methionine-enkephalin (50 to 100 micrograms) or [d-Ala2]-methionine-enkephalinamide (1.5 to 12 micrograms), a synthetic enkephalin analog resistant to enzyme degradation, caused a marked dose-dependent increase in dihydroxyphenylacetic acid and homovanillic acid concentrations in the rat striatum. The [d-Ala2] analog increased the accumulation of dopa in the striatum after aromatic amino acid decarboxylase inhibition, indicating that it increased dopamine synthesis. At the highest doses used both enkephalins failed to modify brain serotonin metabolism. The monolateral microinjection of the [d-Ala2]] analog (3 to 6 micrograms) into the caudate nucleus increased the concentration of dihydroxyphenylacetic acid in the injected side, whereas bilateral injection increased the concentration of this compound in both caudate nuclei and caused catalepsy. The stimulant effect of the [d-Ala2] analog on dopamine synthesis in the striatum persisted after destruction of striatal postsynaptic dopamine receptors with kainic acid. The biochemical and behavioral effects of enkephalins were prevented by naloxone, a specific narcotic antagonist. The results indicate that enkephalins stimulate dopamine synthesis by an action on opioid receptors localized on dopaminergic nerve terminals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Biggio, G -- Casu, M -- Corda, M G -- Di Bello, C -- Gessa, G L -- New York, N.Y. -- Science. 1978 May 5;200(4341):552-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/205949" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): 3,4-Dihydroxyphenylacetic Acid/metabolism ; Animals ; Caudate Nucleus/*metabolism ; Dopamine/*biosynthesis ; Endorphins/*pharmacology ; Enkephalins/antagonists & inhibitors/*pharmacology ; Homovanillic Acid/metabolism ; Kainic Acid/pharmacology ; Male ; Naloxone/pharmacology ; Rats ; Receptors, Dopamine/drug effects ; Receptors, Opioid/drug effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 20
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    Blood-brain neutral amino acid transport activity is increased after portacaval anastomosis (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-06-23
    Beschreibung: In rats after portacaval anastomosis (an animal model of chronic liver disease), transport of tryptophan and other members of the large neutral amino acid group from blood to brain was markedly enhanced. Increased transport activity was apparently restricted to the neutral amino acid transport system, since brain uptake of glucose, inulin, and tyramine was unaffected while blood-brain arginine transport was significantly reduced. These results strikingly confirm the hypothesis that carrier-mediated blood-brain transport is the limiting factor determining the availability of the neutral amino acids to the brain. The encephalopathy associated with cirrhosis may be the result of abnormal neurotransmitter metabolism and neurotransmission secondary to increased neutral amino acid transport activity and an increased brain content of members of the neutral amino acid group.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉James, J H -- Escourrou, J -- Fischer, J E -- New York, N.Y. -- Science. 1978 Jun 23;200(4348):1395-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663619" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acids/*metabolism ; Animals ; Arginine/metabolism ; *Blood-Brain Barrier ; Brain/*metabolism ; Female ; Glucose/metabolism ; Insulin/metabolism ; Liver Cirrhosis, Alcoholic/metabolism ; Phenylalanine/metabolism ; *Portacaval Shunt, Surgical ; Rats ; Tryptophan/*metabolism ; Tyramine/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 21
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    Contact-mediated bone resorption by human monocytes in vitro (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-03-03
    Beschreibung: Human circulating monocytes in tissue culture are capable of resorbing devitalized adult and fetal bone. An important component of this process is the adhesion of the cells to the mineralized substrate and the localized removal of matrix from beneath the attached cells. The process appears to involve both release of lysosomal enzymes onto the substrate and intracellular accumulation (transport) of resorbed matrix.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kahn, A J -- Stewart, C C -- Teitelbaum, S L -- New York, N.Y. -- Science. 1978 Mar 3;199(4332):988-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/622581" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bone Matrix/cytology/metabolism/physiology ; *Bone Resorption ; Bone and Bones/embryology/metabolism ; Calcium Radioisotopes ; Cell Adhesion ; Culture Techniques ; Humans ; Monocytes/cytology/metabolism/*physiology ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 22
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    Modification of attention in honey bees (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-09-29
    Beschreibung: Honey bees were trained in two consecutive two-dimensional (color-position) problems with one dimension (color or position) relevant and the other irrelevant in each problem. As in analogous experiments on dimensional transfer in rats and monkeys, performance in the second problem was more accurate when the relevant and irrelevant dimensions were the same as in the first problem than when they were interchanged. The results of further experiments suggest that the transfer is mediated by different modes of responding that develop in color and position problems rather than by some special process of dimensional selection, such as has been assumed to operate in vertebrates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klosterhalfen, S -- Fischer, W -- Bitterman, M E -- New York, N.Y. -- Science. 1978 Sep 29;201(4362):1241-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/694513" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Attention/*physiology ; Bees/*physiology ; Behavior, Animal/physiology ; Color Perception ; Discrimination Learning/*physiology ; Rats ; Species Specificity
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    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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    Increased resistance to Staphylococcus aureus infection and enhancement in serum lysozyme activity by glucan (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-03-24
    Beschreibung: Glucan is a potent reticuloendothelial stimulant whose immunobiological activity is mediated, in part, by an increase in the number and function of macrophages. In studying the role of glucan as a mediator of antibacterial activity, we attempted to ascertain the ability of glucan to modify the mortality of mice with experimentally induced Gram-positive bacteremia, and to enhance antibacterial defenses in rats as denoted by serum lysozyme and phagocytic activity. After intravenous administration of glucan, serum lysozyme concentrations were increased approximately sevenfold over control concentrations. The increase in serum lysozyme appeared to parallel the glucan-induced increase in phagocytosis and induced hyperplasia of macrophages. Prior treatment of mice with glucan significantly enhanced their survival when they were challenged systemically with Staphylococcus aureus. These studies indicate that glucan confers an enhanced state of host defense against bacterial infections.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kokoshis, P L -- Williams, D L -- Cook, J A -- Di Luzio, N R -- New York, N.Y. -- Science. 1978 Mar 24;199(4335):1340-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/628841" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bacteriolysis/drug effects ; Immunotherapy ; Macrophages/drug effects ; Male ; Muramidase/*blood ; Phagocytosis/*drug effects ; Polysaccharides/*pharmacology/therapeutic use ; Rats ; Sepsis/prevention & control ; Staphylococcal Infections/*prevention & control/therapy ; Staphylococcus aureus
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    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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    Pineal serotonin N-acetyltransferase activity: abrupt decrease in adenosine 3',5'-monophosphate may be signal for "turnoff" (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-01-20
    Beschreibung: Dispersed pinealocytes have been used to study the role of adenosine 3',5'-monophosphate (cyclic AMP) in the "turnoff" of N-acetyltransferace activity. Activity was first stimulated 100-fold by treating cells with 1-norepinephrine. 1-Propranolol acted stereospecifically to rapidly reverse this, resulting in a 70 percent loss of enzyme activity within 15 minutes. An even more rapid 1-propranolol-induced decreased in cyclic AMP also occurred. This together with the observation that the inhibitory effect of 1-propranolol on N-acetyltransferase was blocked by dibutyryl cyclic AMP and phosphodiesterase inhibitors indicate that an abrupt decrease in cyclic AMP may be the signal for the rapid decrease in pineal N-acetyltransferase activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klein, D C -- Buda, M J -- Kapoor, C L -- Krishna, G -- New York, N.Y. -- Science. 1978 Jan 20;199(4326):309-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/202027" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetyltransferases/antagonists & inhibitors/*metabolism ; Animals ; Bucladesine/pharmacology ; Cyclic AMP/*metabolism ; In Vitro Techniques ; Phosphodiesterase Inhibitors/pharmacology ; Pineal Gland/*metabolism ; Propranolol/antagonists & inhibitors/pharmacology ; Rats ; Serotonin
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 25
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    Inhibition of bone formation during space flight (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-09-22
    Beschreibung: Parameters of bone formation and resorption were measured in rats orbited for 19.5 days aboard the Soviet Cosmos 782 biological satellite. The most striking effects were on bone formation. During flight, rats formed significantly less periosteal bone than did control rats on the ground. An arrest line at both the periosteum and the endosteum of flight animals suggest that a complete cessation of bone growth occurred. During a 26-day postflight period, the defect in bone formation was corrected. No significant changes in bone resorption were observed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morey, E R -- Baylink, D J -- New York, N.Y. -- Science. 1978 Sep 22;201(4361):1138-41.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/150643" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Aerospace Medicine ; Animals ; *Bone Development ; Bone Matrix/physiology ; Bone Resorption ; Male ; Periosteum/physiology ; Rats ; *Space Flight ; Specific Pathogen-Free Organisms ; Tetracycline ; Tibia/cytology/growth & development/physiology ; Time Factors ; Weightlessness
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 26
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    Neurotrophic protein regulates muscle acetylcholinesterase in culture (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-04-21
    Beschreibung: Skeletal muscles lose acetylcholinesterase in culture as a result of denervation. A protein fraction isolated from peripheral nerves maintained the level of acetylcholinesterase in cultures of aneural embryonic muscle or denervated adult chicken muscle. These results indicate that trophic regulation of muscle acetylcholinesterase might be mediated by a protein produced by nerves.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oh, T H -- Markelonis, G J -- New York, N.Y. -- Science. 1978 Apr 21;200(4339):337-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/635593" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetylcholinesterase/biosynthesis/*metabolism ; Cells, Cultured ; Enzyme Induction/drug effects ; Muscle Denervation ; Muscles/*enzymology ; Nerve Tissue Proteins/*pharmacology ; Peripheral Nerves/*physiology
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    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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    Lead exposure during infancy permanently increases lithium-induced polydipsia (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-08-18
    Beschreibung: Lead (200 milligrams per kilogram) was administered daily by intubation to Long-Evans rats on days 3 through 30 of life. Thirty to 180 days after cessation of lead administration, the lead-treated rats were consistently more polydipsic after lithium administration (2 millimoles per kilogram per day) than were pair-treated controls. Lithium increased the plasma renin activity equally in both the lead treated and the control groups. These data are evidence that there may be permanent neural changes induced by postnatal exposure to lead that are manifested by pharmacological challenge with lithium.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mailman, R B -- Krigman, M R -- Mueller, R A -- Mushak, P -- Breese, G R -- New York, N.Y. -- Science. 1978 Aug 18;201(4356):637-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/675249" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn ; *Drinking Behavior/drug effects ; Female ; Lead Poisoning/*physiopathology ; Lithium/pharmacology ; Male ; Rats ; Renin/blood
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 28
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    Different actions of anticonvulsant and anesthetic barbiturates revealed by use of cultured mammalian neurons (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-05-19
    Beschreibung: Barbiturate anesthetics, but not anticonvulsants, abolish the spontaneous activity of cultured spinal cord neurons; directly increase membrane conductance, an effect which is suppressed by the gamma-aminobutyric acid (GABA) antagonists picrotoxin and penicillin; and are more potent than anticonvulsants in augmenting GABA and depressing glutamate responses. Barbiturate anticonvulsants abolish picrotoxin-induced convulsive activity. These results indicate qualitative and quantitative differences between anesthetic and anticonvulsant barbiturates, which may explain their different clinical effects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Macdonald, R L -- Barker, J L -- New York, N.Y. -- Science. 1978 May 19;200(4343):775-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/205953" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Action Potentials/drug effects ; Cells, Cultured ; Electric Conductivity ; Glutamates/pharmacology ; Membrane Potentials/drug effects ; Neurons/*drug effects ; Pentobarbital/*pharmacology ; Phenobarbital/*pharmacology ; Picrotoxin/pharmacology ; Receptors, Neurotransmitter/drug effects ; gamma-Aminobutyric Acid/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 29
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    Specific-opiate-induced depression of transmitter release from dorsal root ganglion cells in culture (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-03-31
    Beschreibung: The opiate etorphine depresses monosynaptic excitatory postsynaptic potentials (EPSP's) elicited in spinal cord cells by activation of dorsal root ganglion cells in murine neuronal cell culture. The depression is reversed by naloxone. Statistical analysis of the synaptic responses reveals that the opiate reduces EPSP quantal content at this synapse without altering quantal size. Therefore, the opiate action is presynaptic and affects transmitter release rather than postsynaptic responsiveness.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Macdonald, R L -- Nelson, P G -- New York, N.Y. -- Science. 1978 Mar 31;199(4336):1449-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/204015" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Cells, Cultured ; Depression, Chemical ; Dose-Response Relationship, Drug ; Etorphine/*pharmacology ; Ganglia, Spinal/*drug effects ; Membrane Potentials/drug effects ; Morphinans/*pharmacology ; Naloxone/pharmacology ; Nerve Endings/drug effects ; Spinal Cord/drug effects ; Synapses/drug effects ; Synaptic Transmission/*drug effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 30
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    Electrical stimulation of the amygdala as a conditioned stimulus in a bait-shyness paradigm (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-08-11
    Beschreibung: Animals receiving low-intensity electrical stimulation of the basolateral nucleus of the amygdala while drinking plain tap water were injected with toxic doses of lithium chloride to examine whether brain stimulation can serve as a conditioned stimulus in a bait-shyness paradigm. Subjects receiving this pairing greatly reduced their water intake in a retention test, in a similar manner to a group in which saccharin was paired with poisoning. Pairing lithium chloride with stimulation of the amygdala had no effect on subsequent water intake in the absence of brain stimulation. This effect appears to be locus specific, as caudate stimulation could not serve as a conditioned stimulus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Phillips, A G -- LePiane, F G -- New York, N.Y. -- Science. 1978 Aug 11;201(4355):536-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663673" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amygdala/*physiology ; Animals ; Avoidance Learning/*physiology ; Brain Mapping ; Caudate Nucleus/physiology ; Conditioning, Classical/*physiology ; Electric Stimulation ; Male ; Rats ; Retention (Psychology)/physiology ; Taste/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 31
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    6-Hydroxydopamine and anticholinergic drugs (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-12-15
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mason, S T -- Fibiger, H C -- New York, N.Y. -- Science. 1978 Dec 15;202(4373):1215-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/725598" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Hydroxydopamines/*pharmacology ; Motor Activity/*drug effects ; Norepinephrine/pharmacology ; Parasympathomimetics/pharmacology ; Rats
    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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  • 32
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    Kainic acid lesions of the striatum dissociate amphetamine and apomorphine stereotypy: similarities to Huntingdon's chorea (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-07-28
    Beschreibung: Kainic acid lesion of cell bodies in the dorsal striatum enhanced the stereotypy-producing effects of d-amphetamine without affecting the sterotypy produced by the direct receptor agonist apomorphine. This pattern of results parallels that found in patients suffering from Hungtington's chorea, thus strengthening the parallels between the kainic acid animal model and the human disease state initially suggested on biochemical gounds. The present results further suggest a dissociation of the mechanisms involved in the production of stereotypy by these two drugs, perhaps in terms of differential involvement of the striato-nigral negative feedback loop.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mason, S T -- Sanberg, P R -- Fibiger, H C -- New York, N.Y. -- Science. 1978 Jul 28;201(4353):352-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26976" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Apomorphine/*pharmacology ; Behavior/*drug effects ; Choline O-Acetyltransferase/metabolism ; Corpus Striatum/*drug effects/enzymology/pathology ; Dextroamphetamine/*pharmacology ; Disease Models, Animal ; Glutamate Decarboxylase/metabolism ; Humans ; Huntington Disease/*physiopathology ; *Kainic Acid/pharmacology ; Male ; Nucleus Accumbens/enzymology ; *Pyrrolidines/pharmacology ; Rats ; Stereotyped Behavior/*drug effects ; Tyrosine 3-Monooxygenase/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 33
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    Potent antidopaminergic activity of estradiol at the pituitary level on prolactin release (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-06-09
    Beschreibung: Prior incubation of rat anterior pituitary cells with 17beta-estradiol led to an almost complete reversal of the inhibitory effect of two dopamine agonists, dihydroergocornine and RU 24213, on both basal prolactin release and thyrotropin releasing hormone-induced prolactin release. These experiments thus demonstrate a direct interference of dopamine action by a peripheral hormone. Prolactin secretion by pituitary cells in primary culture could possibly serve as an easily accessible model of a system under dopaminergic control.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Raymond, V -- Beaulieu, M -- Labrie, F -- Boissier, J -- New York, N.Y. -- Science. 1978 Jun 9;200(4346):1173-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/418505" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cells, Cultured ; Dihydroergotoxine/antagonists & inhibitors ; *Dopamine Antagonists ; Estradiol/*pharmacology ; Female ; Phenethylamines/antagonists & inhibitors ; Pituitary Gland, Anterior/*drug effects/secretion ; Prolactin/*secretion ; Rats ; Thyrotropin-Releasing Hormone/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 34
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    Attenuation of amnesia in rats by systemically administered enkephalins (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-04-07
    Beschreibung: The pentapeptides methionine-enkephalin and leucine-enkephalin are both able to reduce experimentally induced amnesia in rats. In contrast to the possible analgesic activity of these peptides, the anti-amnesic effect is seen after systemic administration of dosages of 30 micrograms or lower. The nature of the anti-amnesic effect is different for the two peptides.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rigter, H -- New York, N.Y. -- Science. 1978 Apr 7;200(4337):83-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/635578" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Avoidance Learning/*drug effects ; Carbon Dioxide/antagonists & inhibitors ; Dose-Response Relationship, Drug ; Endorphins/*pharmacology ; Enkephalins/*pharmacology ; Male ; Memory/*drug effects ; Rats ; Time Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 35
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    Fluorescence-immunocytochemistry: simultaneous localization of catecholamines and gonadotropin-releasing hormone (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-04-07
    Beschreibung: Gonadotropin-releasing hormone and dopamine were identified simultaneously in the same block of tissue from the median eminence of the rat brain. Two distinct bands of dopamine terminals were found in the lateral median eminence: an inner band which overlapped the gonadotropin-releasing hormone terminals and an outer band which appeared juxtaposed to portal capillaries.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McNeill, T H -- Sladek, J R Jr -- New York, N.Y. -- Science. 1978 Apr 7;200(4337):72-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/345442" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Dopamine/*metabolism ; Gonadotropin-Releasing Hormone/*metabolism ; Hypothalamo-Hypophyseal System/*metabolism ; Immunoenzyme Techniques ; Male ; Median Eminence/*metabolism ; Microscopy, Fluorescence ; Nerve Endings/metabolism ; Norepinephrine/*metabolism ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 36
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    Jaundice phototherapy: micro flow-cell photometry reveals rapid biliary response of Gunn rats to light (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-09-01
    Beschreibung: Hepatic pigment clearance in rats can be followed continuously with photometric detectors designed for high-pressure liquid chromatography. This method showed that light has a fast effect on bilirubin metabolism in homozygous Gunn rats, even at low doses and intensities. This is consistent with geometric isomerization of bilirubin IXalpha as a primary step in phototherapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McDonagh, A F -- Ramonas, L M -- New York, N.Y. -- Science. 1978 Sep 1;201(4358):829-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/581101" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bile/metabolism ; Bilirubin/blood/*metabolism/radiation effects ; *Disease Models, Animal ; Humans ; Infant, Newborn ; Jaundice, Neonatal/*therapy ; Kinetics ; Liver/metabolism ; *Phototherapy ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 37
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    delta9-tetrahydrocannabinol: antiaggressive effects in mice, rats, and squirrel monkeys (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-03-31
    Beschreibung: delta9-Tetrahydrocannabinol, the most active constituent of marihuana, decreased species-specific attack behavior in mice, rats, and squirrel monkeys at doses (0.25 to 2.0 milligram per kilogram of body weight) that have no effects on other elements of the behavioral repertoire. Aggressive behavior was engendered in all three species by confronting a resident animal with an intruder conspecific. The present results contrast with the widely held belief that marihuana increases aggressive behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miczek, K A -- New York, N.Y. -- Science. 1978 Mar 31;199(4336):1459-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/415367" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aggression/*drug effects ; Animals ; Behavior, Animal/*drug effects ; Depression, Chemical ; Dose-Response Relationship, Drug ; Dronabinol/*pharmacology ; Female ; Haplorhini ; Humans ; Male ; Mice ; Motor Activity/drug effects ; Rats ; Saimiri ; Territoriality
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 38
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    Medial preoptic lesions and male sexual behavior: age and environmental interactions (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-06-23
    Beschreibung: In all species studied, the medial preoptic area has been found to be necessary for male copulatory behavior. No recovery of sexual function from the medial preoptic area lesions appears to have been reported. This study demonstrates that rats with large lesions of the medial preoptic area exhibit adult male sexual behavior when the surgery is performed prepuberally and the rats have interacted socially with peers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Twiggs, D G -- Popolow, H B -- Gerall, A A -- New York, N.Y. -- Science. 1978 Jun 23;200(4348):1414-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663624" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Copulation/*physiology ; Environment ; Hypothalamus/*physiology ; Male ; Preoptic Area/*physiology ; Rats ; *Sexual Maturation
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 39
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    Cyclopropanecarboxylic acid: chain elongation to omega-cyclopropyl fatty acids by mammals and plants (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-02-03
    Beschreibung: Rats dosed orally which [carboxyl-14C]cyclopropanecarboxylic acid (or its hexadecyl ester) retain radioactivity in tissue as novel triacylglycerols. The most abundant 14C-labeled metabolites were identified by gas-liquid chromatography-mass spectrometry as 13-cyclopropyltridecanoic and 15-cyclopropylpentadecanoic acids. Similar omega-cyclopropyl fatty acids are produced by beagle dogs and a lactating cow, as well as by apple and orange trees.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schooley, D A -- Quistad, G B -- Staiger, L E -- New York, N.Y. -- Science. 1978 Feb 3;199(4328):544-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/622554" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Carboxylic Acids/*metabolism ; Cattle ; Cyclopropanes/*metabolism ; Dogs ; Fatty Acids/*metabolism ; Female ; Milk/metabolism ; Mites/drug effects ; Pesticides/metabolism ; Plants/metabolism ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 40
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    Adrenocorticotropin in rat brain: immunocytochemical localization in cells and axons (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-06-09
    Beschreibung: By means of antiserum (purified by affinity chromatography) directed against adrenocorticotropin (ACTH) 11-24, cell bodies and beaded axons were visualized in rat brain. The ACTH-like immunoreactivity (ACTH-LI) was primarily located in the hypothalamus (cells and axons). Fibers were scattered throughout thalamus, amygdala, periaqueductal gray area, and reticular formation. There was no change in the distribution of ACTH-LI in rats that had been subjected to hypophysectomy. This distribution of ACTH-LI parallels that of beta-lipotropin and is altered by specific lesions in a similar fashion. The presence of ACTH-LI in cells and beaded axons in brain raises the possibility that it is a neuroregulator functioning as a neurotransmitter, neuromodulator, or neurohormone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watson, S J -- Richard, C W 3rd -- Barchas, J D -- New York, N.Y. -- Science. 1978 Jun 9;200(4346):1180-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/206967" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adrenocorticotropic Hormone/*metabolism ; Animals ; Axons/metabolism ; Brain/cytology/*metabolism ; Hypothalamus/metabolism ; Immunoenzyme Techniques ; Male ; Pituitary Gland/*metabolism ; Rats ; beta-Lipotropin/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 41
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    Nature and nurture in development of the autonomic neuron (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-03-31
    Beschreibung: Arguments are presented for the hypothesis that during an early stage of development the cells which become principal neurons of the autonomic nervous system possess information regarding the positions they will occupy within the body. A second stage of development, during which a decision is made regarding which neurotransmitter to employ, is delayed until each neuron has assumed its permanent position in the body and has sampled, presumably via its growing axons, the peripheral field which it will innervate. The development of cholinergic mechanisms takes precedence; adrenergic neurons may develop only when cholinergic sites have been occupied. An extended period during which the differentiation of transmitter mechanisms may be modulated permits the neuron to adequately sample the periphery prior to commitment to a specific transmitter economy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bunge, R -- Johnson, M -- Ross, C D -- New York, N.Y. -- Science. 1978 Mar 31;199(4336):1409-16.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24273" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adrenergic Fibers/cytology ; Animals ; Autonomic Nervous System/*embryology/growth & development ; Cell Differentiation ; Cells, Cultured ; Chimera ; Cholinergic Fibers/cytology ; Embryonic Induction ; Ganglia, Autonomic/cytology ; Heart/innervation ; Intestines/innervation ; Nerve Endings/ultrastructure ; Neurotransmitter Agents/metabolism ; Phylogeny ; Synaptic Vesicles/ultrastructure
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 42
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    Chronic focal epileptiform discharges induced by injection of iron into rat and cat cortex (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-06-30
    Beschreibung: A single injection of 5 or 10 microliters of ferrous or ferric chloride into rat or cat sensorimotor cortex resulted in chronic recurrent focal paroxysmal electroencephalographic discharges as well as behavioral convulsions and electrical seizures. Recurrent focal epileptiform discharge caused by cortical injection of iron salts suggests that the development of human posttraumatic epilepsy may depend, in part, on the neurochemical alterations induced by the principal metallic ions found in whole blood.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Willmore, L J -- Sypert, G W -- Munson, J V -- Hurd, R W -- New York, N.Y. -- Science. 1978 Jun 30;200(4349):1501-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/96527" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cats ; Cerebral Cortex/*drug effects/physiopathology ; *Disease Models, Animal ; Electrophysiology ; Epilepsies, Partial/*chemically induced ; Ferric Compounds ; Ferrous Compounds ; *Iron ; Rats ; Seizures/*chemically induced/physiopathology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 43
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    Secretion in mast cells induced by calcium entrapped within phospholipid vesicles (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-09-22
    Beschreibung: Purified mast cells secreted histamine when fused to phospholipid vesicles containing calcium but not magnesium or potassium. Microscopic observation revealed highly localized exocytotic responses involving punctate extrusion of individual granules. Calcium delivered from the vesicles to the cytoplasm is apparently a sufficient stimulus to initiate exocytosis. The results support the calcium hypothesis of stimulus-secretion coupling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Theoharides, T C -- Douglas, W W -- New York, N.Y. -- Science. 1978 Sep 22;201(4361):1143-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/684435" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Ascitic Fluid/cytology ; Calcium/*pharmacology ; Exocytosis ; In Vitro Techniques ; Liposomes/*pharmacology ; Mast Cells/cytology/drug effects/*secretion ; Rats ; Ruthenium Red
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 44
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    Brain edema: induction in cortical slices by polyunsaturated fatty acids (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-07-28
    Beschreibung: The presence of polyunsaturated and saturated fatty acids in leukocytic membranes prompted study of their possible role in the induction of brain edema. Polyunsaturated fatty acids including sodium arachidonate, sodium linoleate, sodium linolenate, and docasahexaenoic acids induced edma in slices of rat brain cortex. This cellular edema was specific, since neither saturated fatty acids nor a fatty acid containing a single double bond had such effect.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chan, P H -- Fishman, R A -- New York, N.Y. -- Science. 1978 Jul 28;201(4353):358-60.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663662" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Arachidonic Acids ; Brain Edema/*chemically induced ; Cerebral Cortex ; Detergents ; Dose-Response Relationship, Drug ; *Fatty Acids, Unsaturated ; Granulocytes/physiology ; Hydroxy Acids ; In Vitro Techniques ; Prostaglandins ; Rats ; Sodium Dodecyl Sulfate ; Water-Electrolyte Imbalance/chemically induced
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 45
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    Presynaptic alpha-receptor subsensitivity after long-term antidepressant treatment (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-10-20
    Beschreibung: After 3 weeks of twice-daily administration of desipramine to rats, the frequency-response curve for field stimulation of adrenergic neurons in isolated left atrial strips was shifted markedly to the left and the efflux of [3H]norepinephrine was enhanced greatly. After 1 day of treatment, only slight shifts in the frequency-response curve and small increases in [3H]norepinephrine efflux occurred although inhibition of [3H]norepinephrine uptake was already maximal, and phenoxybenzamine caused a further shift to the left in the frequency-response curve similar to that which occurred after 3 weeks of desipramine treatment alone. A gradual decrease in the sensitivity of the presynaptic alpha receptor would explain the delay in the onset of the linical effect of the tricyclic antidepressants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crews, F T -- Smith, C B -- New York, N.Y. -- Science. 1978 Oct 20;202(4365):322-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/211589" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Desipramine/*pharmacology ; In Vitro Techniques ; Kinetics ; Neuromuscular Junction/drug effects ; Norepinephrine/*metabolism/pharmacology ; Phenoxybenzamine/pharmacology ; Rats ; Receptors, Adrenergic/*drug effects ; Receptors, Adrenergic, alpha/*drug effects ; Receptors, Adrenergic, beta/drug effects ; Synaptic Membranes/drug effects ; Synaptic Transmission/*drug effects ; Time Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 46
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    Infantile stimulation induces brain lateralization in rats (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-09-22
    Beschreibung: The hypothesis tested was that the effects of early experiences are asymmetrically distributed in the two brain hemispheres. Litters were either handled or not handled between birth and weaning, and the weanlings were reared in either laboratory cages or enriched environments between 21 and 50 days. When approximately 135 days old, animals within each of the four treatment groups had a right neocortical ablation, a left neocortical ablation, a sham operation, or no surgery. About 1 month later, all animals were given the open-field test for emotionality and exploratory behavior. Ablating either the right or left neocortex increased the activity scores of nonhandled controls, but there was no evidence of lateralization. However, the groups handled in infancy did show lateralization. Ablating the left brain did not significantly increase activity, but ablating the right brain caused extreme scores: handled rats without enrichment experience were the most active, and handled rats also placed into the enriched environment had near-zero scores in the open field.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Denenberg, V H -- Garbanati, J -- Sherman, D A -- Yutzey, D A -- Kaplan, R -- New York, N.Y. -- Science. 1978 Sep 22;201(4361):1150-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/684436" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn/*physiology ; Brain/*physiology ; Cerebral Cortex/physiology ; Emotions/physiology ; *Environment ; Exploratory Behavior/physiology ; Female ; Functional Laterality/*physiology ; Handling (Psychology)/*physiology ; Male ; Motor Activity/physiology ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 47
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    Phenobarbital: effects of long-term administration on behavior and brain of artificially reared rats (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-01-06
    Beschreibung: Two doses of phenobarbital were given daily for 2 weeks to infant rats fed by intragastric cannulas. The larger dose (60 milligrams per kilogram of body weight) resulted in decreased spontaneous activity and increased responses to novel stimuli. The smaller dose (15 milligrams per kilogram) resulted in increased spontaneous activity and also an increase of responses to novel stimuli. The larger dose produced a 12 percent reduction in brain growth, while the smaller dose was associated with a 3 percent reduction in brain growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Diaz, J -- Schain, R J -- New York, N.Y. -- Science. 1978 Jan 6;199(4324):90-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychiatry, University of California, Los Angeles, CA 90024, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17569495" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Behavior, Animal/*drug effects ; Brain/*drug effects/growth & development ; Injections, Subcutaneous ; Light ; Male ; Motor Activity/*drug effects ; Noise ; Phenobarbital/*administration & dosage/blood/pharmacology ; Rats ; Rats, Wistar
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 48
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    Deficiencies of glucosamine-6-sulfate or galactosamine-6-sulfate sulfatases are responsible for different mucopolysaccharidoses (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-01-06
    Beschreibung: [1-3H]Galactitol-6-sulfate, N- [1-3H]acetylgalactosaminitol-6-sulfate, N-[1-3H]acetylglucosaminitol-6-sulfate, N-acetylglucosamine-6-sulfate, and 6-sulfated tetrasaccharides from chondroitin-6-sulfate have been used for the measurement of 6-sulfatase activity of extracts of normal skin fibroblasts and of fibroblasts cultured from patients with genetic mucopolysaccharidoses. With these substrates, extracts of fibroblasts derived from Morquio patients lack or have greatly reduced activities for galactitol-6-sulfate, N-acetylgalactosaminitol-6-sulfate, and 6-sulfated tetrasaccharides but have normal activity for N-acetylglucosamine-6-sulfate and its alditol; those derived from a patient with a newly discovered mucopolysaccharidosis have greatly reduced activity for N-acetylglucosamine-6-sulfate and its alditol but normal activity for galactitol-6-sulfate, N-acetylgalactosaminitol-6-sulfate, and the 6-sulfated tetrasaccharides. These findings demonstrate the existence of two different hexosamine-6-sulfate sulfatases, specific for the glucose or galactose configuration of their substrates. Their respective deficiencies, causing inability to degrade keratan sulfate and heparan sulfate in one case and keratan sulfate and chondroitin-6-sulfate in the other, are responsible for different clinical phenotypes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Di Ferrante, N -- Ginsberg, L C -- Donnelly, P V -- Di Ferrante, D T -- Caskey, C T -- New York, N.Y. -- Science. 1978 Jan 6;199(4324):79-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratories of Connective Tissue Research, Department of Biochemistry, Baylor College of Medicine, Houston, Texas 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17569489" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetylgalactosamine/analogs & derivatives/metabolism ; Acetylglucosamine/analogs & derivatives/metabolism ; Cells, Cultured ; Child, Preschool ; Chondroitin Sulfates/metabolism ; Chondroitinsulfatases/*deficiency/metabolism ; Fibroblasts/enzymology ; Galactitol/metabolism ; Heparitin Sulfate/metabolism ; Humans ; Hydrogen-Ion Concentration ; Keratan Sulfate/metabolism ; Male ; Mucopolysaccharidoses/*enzymology ; Mucopolysaccharidosis III/enzymology ; Mucopolysaccharidosis IV/*enzymology ; Skin/cytology/enzymology ; Substrate Specificity ; Sulfatases/*deficiency/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 49
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    Long-term changes in dopaminergic innervation of caudate nucleus after continuous amphetamine administration (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-07-21
    Beschreibung: Silicone pellets containing d-amphetamine base were implanted subcutaneously in rats. These pellets release amphetamine continuously for at least 10 days. Several days after implantation, swollen dopamine axons concomitant with large decreases in tyrosine hydroxylase activity were observed in the caudate nucleus. Decreased tyrosine hydroxylase activity was still present 110 days after pellet removal in the caudate but not in several other brain regions, nor in the caudate of rats injected with an equivalent amount of amphetamine in daily injections. This implies that continuous amphetamine administration has a selective neurotoxic effect on dopamine terminals in the caudate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ellison, G -- Eison, M S -- Huberman, H S -- Daniel, F -- New York, N.Y. -- Science. 1978 Jul 21;201(4352):276-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26975" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Catecholamines/*metabolism ; Caudate Nucleus/cytology/*drug effects/metabolism ; Dextroamphetamine/administration & dosage/*pharmacology ; Dopamine/*metabolism ; Drug Implants ; Male ; Norepinephrine/metabolism ; Rats ; Time Factors ; Tyrosine 3-Monooxygenase/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 50
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    Ethanol: modifications of acute intoxication by divalent cations (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-03-17
    Beschreibung: Calcium, other divalent cations, and calcium antagonists were tested for their ability to alter ethanol-induced sleeping time, hypothermia, and behavioral intoxication in mice and rats. Calcium given intraventricularly significantly enhanced sleeping time and behavioral intoxication in a dose-related manner. The ionophores X537A and A23187 accentuated the effect of a low dose of calcium, whereas the calcium chelators EDTA and EGTA decreased sleeping time. Calcium also enhanced tertiary butanol- and chloral hydrate-induced sleeping time. The effects of cations on ethanol-induced hypothermia were less significant. The results suggest the existence of a central calcium pool that is involved in ethanol intoxication in rodents.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Erickson, C K -- Tyler, T D -- Harris, R A -- New York, N.Y. -- Science. 1978 Mar 17;199(4334):1219-21.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/343251" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alcoholic Intoxication/*physiopathology ; Animals ; Body Temperature Regulation/drug effects ; Calcimycin/pharmacology ; Calcium/antagonists & inhibitors/*physiology ; Cations, Divalent ; Dose-Response Relationship, Drug ; Drug Synergism ; Female ; Humans ; Lasalocid/pharmacology ; Male ; Mice ; Movement/drug effects ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 51
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    Different brain areas mediate the analgesic and epileptic properties of enkephalin (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-04-21
    Beschreibung: Single injections of 120 micrograms of methionine-enkephalin were made into various midbrain and forebrain structures in the rat. Analgesia was observed after injections into or near the ventral, caudal midbrain periaqueductal gray matter. Seizures and other pathological electroencephalogram (EEG) changes were seen with injections into or near the forebrain dorsomedial nucleus of the thalamus. No animals with midbrain injection sites showed EEG changes, and none with forebrain injection sites were analgesic. These data, taken together with other lines of evidence, suggest that enkephalin-induced analgesia and enkephalin-induced seizures are mediated by opiate receptors that are located in different brain areas and that are pharmacologically different.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frenk, H -- McCarty, B C -- Liebeskind, J C -- New York, N.Y. -- Science. 1978 Apr 21;200(4339):335-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/204998" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Analgesia ; Animals ; Brain/*drug effects ; Cerebral Aqueduct ; Dose-Response Relationship, Drug ; *Endorphins/pharmacology ; *Enkephalins/pharmacology ; Male ; Naloxone/pharmacology ; Rats ; Receptors, Opioid/drug effects ; Seizures/*chemically induced ; Thalamic Nuclei/*drug effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 52
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    Localization of inorganic phosphate in the pancreatic B cell and its loss on glucose stimulation (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-09-22
    Beschreibung: Perifusion experiments have shown that there is a discharge of inorganic phosphate into the medium when insulin secretion from isolated islets is stimulated by glucose. Histochemical and microprobe examination of resting pancreatic islets in the electron microscope shows a specific accumulation of inorganic phosphate adjacent to the plasmalemma and nucleolus of the B (beta) cells. This phossphate is lost from the cells during secretory stimulation of islets with high concentrations of glucose.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Freinkel, N -- Pedley, K C -- Wooding, P -- Dawson, R M -- New York, N.Y. -- Science. 1978 Sep 22;201(4361):1124-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/356269" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bicarbonates/pharmacology ; Electron Probe Microanalysis ; Glucose/*pharmacology ; In Vitro Techniques ; Islets of Langerhans/cytology/drug effects/*metabolism ; Microscopy, Electron ; Perfusion ; Phosphates/*metabolism ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 53
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    Long ascending projections from substantia gelatinosa Rolandi and the subjacent dorsal horn in the rat (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-12-01
    Beschreibung: Small neurons of the substantia gelatinosa Rolandi and the subjacent dorsal horn of the spinal cord have been thought to exert a direct modulatory effect only on neurons located within a distance of a few spinal segemnts. By using the technique of retorograde transport of horseradish peroxidase, however, it has been found that in the rat a significant number of these cells, particularly those of the subjacent dorsal horn, ascend many spinal segments to the lateral cervical nucleus and to the lower brainstem. These data provide an anatomic basis for a role of substantia gelatinosa Rolandi and subjacent dorsal horn cells in madulating or contributing to sensory information transmission not only in nearby segments but in far distant structures.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Giesler, G J Jr -- Cannon, J T -- Urca, G -- Liebeskind, J C -- New York, N.Y. -- Science. 1978 Dec 1;202(4371):984-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715454" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Afferent Pathways/cytology ; Animals ; Brain Stem/*cytology ; Male ; Rats ; Spinal Cord/*cytology/physiology ; Substantia Gelatinosa/cytology/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 54
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    Age affect and replicative life-span of fibroblasts of diabetic, prediabetic, and normal donors: another look at the data (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-12-15
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gleason, R E -- Goldstein, S -- New York, N.Y. -- Science. 1978 Dec 15;202(4373):1217-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/725599" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adolescent ; Adult ; Aged ; *Aging ; Cell Division ; Cell Survival ; Cells, Cultured ; Diabetes Mellitus/*physiopathology ; Humans ; Middle Aged ; Prediabetic State/*physiopathology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 55
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    Entry of insulin into human cultured lymphocytes: electron microscope autoradiographic analysis (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-11-17
    Beschreibung: Electron microscope autoradiographs were prepared of IM-9 human cultured lymphocytes incubated with iodine-125-labeled insulin. With the use of [125I]insulin and Ilford L-4 emulsion, the technique had a resolution half-distance of approximately 0.085 micrometer. Autoradiographs revealed a time-dependent entry of insulin into the cell interior that was maximal after 30 minutes of incubation. At this time point nearly 40 percent of the [125I]insulin was in the interior of the cell at a distance 1 micrometer or greater from the plasma membrane. Grain distribution and volume density analyses revealed that the intracellular insulin was concentrated in the endoplasmic reticulum and nuclear membrane.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldfine, I D -- Jones, A L -- Hradek, G T -- Wong, K Y -- Mooney, J S -- New York, N.Y. -- Science. 1978 Nov 17;202(4369):760-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715440" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Autoradiography ; Biological Transport ; Cell Nucleus/metabolism ; Cells, Cultured ; Endoplasmic Reticulum/metabolism ; Humans ; Insulin/*metabolism ; Kinetics ; Lymphocytes/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 56
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    Phagocytosis in the retinal pigment epithelium of the RCS rat (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-09-15
    Beschreibung: The retinal pigment epithelium of RCS rats, previously thought not to phagocytize photoreceptor outer segments, exhibited a peak of phagocytosis in vivo when animals were kept under conditions of cyclic lighting (12 hours of darkness and 12 hours of light). The peak occurred at 1 hour after the onset of light, with maximum and minimum levels of phagocytosis averaging about 5 percent of that found in the pigment epithelium of Osborn-Mendel rats used as a control. Eyecups that were obtained from Osborn-Mendel rats and maintained for up to 3 hours in organ culture demonstrated levels of phagocytosis that were sevenfold greater than those of unincubated controls. Likewise a tenfold increase occurred in incubated as opposed to unicubated RCS eyes, raising the possibility that phagocytosis could be experimentally stimulated in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldman, A I -- O'Brien, P J -- New York, N.Y. -- Science. 1978 Sep 15;201(4360):1023-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/567376" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Count ; Circadian Rhythm ; Organ Culture Techniques ; Phagocytes/ultrastructure ; *Phagocytosis ; Pigment Epithelium of Eye/*metabolism/ultrastructure ; Rats ; Rats, Inbred Strains/*metabolism ; Time Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 57
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    Chronologic and physiologic age affect replicative life-span of fibroblasts from diabetic, prediabetic, and normal donors (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-02-17
    Beschreibung: Cultured skin fibroblasts from subjects with clinically apparent diabetes mellitus and from subjects genetically predisposed to diabetes have a replicative lifespan that is inversely related to donor age. Fibroblasts from carefully defined normal subjects not predisposed to diabetes fail to show this correlation. The data support the idea that physiologic status of the tissue donor is a more precise determinant of fibroblast replicative lifespan than chronologic age.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldstein, S -- Moerman, E J -- Soeldner, J S -- Gleason, R E -- Barnett, D M -- New York, N.Y. -- Science. 1978 Feb 17;199(4330):781-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/622567" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adolescent ; Adult ; Aged ; *Aging ; Cell Division ; Cell Survival ; Cells, Cultured ; Diabetes Mellitus/pathology/*physiopathology ; Fibroblasts/*cytology/pathology ; Humans ; Middle Aged ; Prediabetic State/pathology/*physiopathology ; Regression Analysis ; Skin/cytology/pathology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 58
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    Endosteal marrow: a rich source of hematopoietic stem cells (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-03-31
    Beschreibung: Hematopoietic cells isolated from the endosteal bone surface, that is,the endosteal marrow cells, were found to consist mainly (60 to 80 percent) of lymphoid and late-stage normoblast-like cells. Unlike the cells they resemble, the endosteal marrow cells showed an affinity for Sudan black, demonstrable nucleoli (Feulgen reaction), and an absence of hemoglobin. Assays showed that over one-half of the endosteal marrow cell population may be the colony-forming units, the CFU-S of Till and McCulloch. Thus, high concentrations of stem cells could be obtained from the endosteal bone surface by means of the present isolation technique.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gong, J K -- New York, N.Y. -- Science. 1978 Mar 31;199(4336):1443-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/75570" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Bone Marrow Cells ; Cell Nucleolus/ultrastructure ; Female ; Hematopoiesis ; Hematopoietic Stem Cells/*cytology ; Lymphocytes/ultrastructure ; Male ; Mice ; Rats ; Spleen/cytology ; Staining and Labeling
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 59
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    Intracellular translocation of iodine-125-labeled insulin: direct demonstration in isolated hepatocytes (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-05-19
    Beschreibung: Insulin labeled with iodine-125 binds to receptors on isolated rat hepatocytes. At low temperatures initial binding is restricted to the plasma membrane as detected by direct quantitative autoradiographic analysis with the electron microscope. With increasing time and temperature of incubation there is a systematic and progressive translocation of autoradiographic grains to a highly limited area of the cell periphery representing no more than 15% of the radius of the cell.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gorden, P -- Carpentier, J L -- Freychet, P -- LeCam, A -- Orci, L -- New York, N.Y. -- Science. 1978 May 19;200(4343):782-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/644321" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Membrane/metabolism ; Endocytosis ; Insulin/*metabolism ; Kinetics ; Liver/*metabolism/ultrastructure ; Lymphocytes/metabolism ; Lysosomes/metabolism ; Molecular Weight ; Rats ; Receptor, Insulin/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 60
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    Retrograde amnesia produced by several treatments: evidence for a common neurobiological mechanism (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-07-28
    Beschreibung: This experiment examined the effects on memory of various amnestic treatments in animals earlier treated with the alpha-adrenergic antagonist phenoxybenzamine (PBZ). Thirty minutes before being trained in a one-trial inhibitory (passive) avoidance task, animals received an injection of PBZ or saline. Immediately after training, each animal received one of the following amnestic treatments: stimulation of the frontal cortex or amygdala, pentylenetetrazol, diethyldithiocarbamate, or cycloheximide. In control animals, each treatment produced retrograde amnesia. However, PBZ-treated animals did not develop amnesia. These findings suggest that there may be a common neurobiological mechanism underlying the amnesias produced by many treatments.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gold, P E -- Sternberg, D B -- New York, N.Y. -- Science. 1978 Jul 28;201(4353):367-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/208153" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amnesia/*etiology ; Amnesia, Retrograde/*etiology/prevention & control ; Amygdala/physiopathology ; Animals ; Avoidance Learning/drug effects ; Cerebral Cortex/physiopathology ; Cycloheximide/antagonists & inhibitors ; Ditiocarb/antagonists & inhibitors ; Electric Stimulation ; Humans ; Memory/*drug effects ; Mice ; Phenoxybenzamine/*pharmacology ; Rats ; Seizures/complications
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Pattern formation by cultured human epidermal cells: development of curved ridges resembling dermatoglyphs (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-06-23
    Beschreibung: In cultures made from disaggregated human epidermal cells, growth to a confluent cell layer is followed by the emergence of patterns resembling those of human dermatoglyphs. These patterns reflect intrinsic properties of kertinocytes. In vivo, only the epidermis of the volar surfaces forms patterns, but in culture, patterns are formed by epidermal cells from other sites as well. Patterns develop by a process of cell movement which first produces ridges and then curves the ridges into figures of increasing complexity, ultimately whorls.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Green, H -- Thomas, J -- New York, N.Y. -- Science. 1978 Jun 23;200(4348):1385-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663617" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Cell Differentiation ; Cell Movement ; Cells, Cultured ; *Dermatoglyphics ; Embryonic Induction ; Epidermis/*cytology ; Fibroblasts/cytology ; Humans ; Time Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 62
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    Amantadine: neuromuscular blockade by suppression of ionic conductance of the acetylcholine receptor (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-02-17
    Beschreibung: Amantadine hydrochloride decreases the sensitivity of denervated mammalian muscle to iontophoretically applied acetylcholine. The drug depresses the amplitude of the end-plate current and reverses the slope of the relation between half-decay time and membrane potential suggesting that it alters the ionic conductance that is mediated by the acetylcholine receptor. Binding studies confirm that amantadine acts on the ion conductance modulator rather than the acetylcholine receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Albuquerque, E X -- Eldefrawi, A T -- Eldefrawi, M E -- Mansour, N A -- Tsai, M C -- New York, N.Y. -- Science. 1978 Feb 17;199(4330):788-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/622570" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetylcholine/metabolism/*physiology ; Amantadine/*pharmacology ; Animals ; Electric Conductivity ; Electric Organ/drug effects/metabolism/physiology ; Fishes ; In Vitro Techniques ; Membrane Potentials/drug effects ; Motor Endplate/drug effects/metabolism/physiology ; Muscle Denervation ; Muscles/innervation/metabolism ; *Neuromuscular Blocking Agents ; Neuromuscular Junction/drug effects/metabolism/physiology ; Rats ; Receptors, Cholinergic/*drug effects ; Receptors, Nicotinic/*drug effects/metabolism/physiology ; Toxins, Biological/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 63
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    Lichen myxedematosus serum stimulates human skin fibroblast proliferation (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-02-03
    Beschreibung: Serum from patients with lichen myxedematosus, when added to exponentially growing normal human skin fibroblasts, stimulates DNA synthesis and cell proliferation. The degree of response in vitro is correlated with the extent of the disease in vivo and is specific for fibroblasts. The results suggest that there is a systemic factor (or factors) which may play a role in the etiology of diseases affecting the connective tissue.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harper, R A -- Rispler, J -- New York, N.Y. -- Science. 1978 Feb 3;199(4328):545-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/622555" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Cell Division ; Cells, Cultured ; Female ; Fibroblasts/metabolism ; Humans ; Immunoglobulin G/analysis ; Male ; Middle Aged ; Skin Diseases/*blood/immunology/pathology ; Thymidine/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 64
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    Increasing adipocyte number as the basis for perirenal depot growth in adult rats (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-09-29
    Beschreibung: The mass of the perirenal adipose depot in male Fischer 344 rats increases between 6 and 18 months of age. This increase is due to an increase in the number of adipocytes in this depot, in contrast with the concept that adipocyte number is constant throughout adult life. The epididymal depot increases in mass between 6 and 18 months of age by adipocyte hypertrophy alone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bertrand, H A -- Masoro, E J -- Yu, B P -- New York, N.Y. -- Science. 1978 Sep 29;201(4362):1234-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/151328" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adipose Tissue/*cytology ; Animals ; Epididymis ; Kidney ; Male ; Rats ; Rats, Inbred F344 ; Specific Pathogen-Free Organisms
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 65
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    Polarity of the blood-brain barrier: neutral amino acid transport into isolated brain capillaries (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-10-13
    Beschreibung: Capillary endothelial cells isolated from rat brain exhibit Na+-dependent uptake of the neutral amino acid analog alpha-(methylamino)isobutyric acid. Since studies in vivo demonstrate that this transport system is not present on the blood side of brain capillaries we conclude that Na+-dependent neutral amino acid transport is located on the brain side. Therefore, the luminal plasma membrane and the antiluminal plasma membrane appear to be functionally distinct. This polarity should permit brain capillary endothelial cells to actively regulate the internal milieu of the brain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Betz, A L -- Goldstein, G W -- New York, N.Y. -- Science. 1978 Oct 13;202(4364):225-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/211586" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aminoisobutyric Acids/*analogs & derivatives/metabolism ; Animals ; Biological Transport, Active ; *Blood-Brain Barrier ; *Capillary Permeability ; Cell Membrane/metabolism/ultrastructure ; Cerebral Cortex/*blood supply ; Endothelium/metabolism ; In Vitro Techniques ; Leucine/*metabolism ; Rats ; Sodium/metabolism ; Sodium-Potassium-Exchanging ATPase/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 66
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    Lecithin consumption increases acetylcholine concentrations in rat brain and adrenal gland (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-10-13
    Beschreibung: Consumption of a single meal containing lecithin, the major source of choline occurring naturally in the diet, increased the concentrations of choline and acetylcholine in rat brain and adrenal gland. Hence, the concentration of acetylcholine in the tissues may normally be under direct, short-term nutritional control.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hirsch, M J -- Wurtman, R J -- New York, N.Y. -- Science. 1978 Oct 13;202(4364):223-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/694529" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetylcholine/blood/*metabolism ; Adrenal Glands/*metabolism ; Animals ; Brain/*metabolism ; Choline/blood/*metabolism ; Diet ; Dyskinesia, Drug-Induced/diet therapy ; Male ; Phosphatidylcholines/*metabolism/therapeutic use ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 67
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    Behavioral competition: a mechanism for schedule interactions (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-10-27
    Beschreibung: Rats pressing a lever for food reinforcement showed large positive-contrast effects when provided with the opportunity for a competing wheel-running response. Positive and negative behavioral contrast may reflect reallocation of competing interim and terminal responses between schedule components following changes in the reinforcement conditions in one component.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hinson, J M -- Staddon, J E -- New York, N.Y. -- Science. 1978 Oct 27;202(4366):432-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/705334" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Behavior, Animal/*physiology ; Conditioning (Psychology)/physiology ; Male ; Motor Activity/physiology ; Rats ; *Reinforcement (Psychology) ; Reinforcement Schedule
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 68
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    Cholestyramine: use as a new therapeutic approach for chlordecone (kepone) poisoning (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-02-24
    Beschreibung: In rats, as reported in humans, chlordecone (Kepone) is excreted predominantly in the feces. Cholestyramine, an anion exchange resin, binds chlordecone in rat intestine, increases its excretion into the feces, and decreases its content in the tissues. The resin appears to offer a practical method for treating chronic poisoning with this and possibly with other lipophilic toxins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boylan, J J -- Egle, J L -- Guzelian, P S -- New York, N.Y. -- Science. 1978 Feb 24;199(4331):893-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/74852" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bile/metabolism ; Chlordecone/metabolism/*poisoning ; Cholestyramine Resin/*therapeutic use ; Feces/metabolism ; Inactivation, Metabolic ; Insecticides/*poisoning ; Male ; Rats ; Tissue Distribution
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 69
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    Inhibition of bone resorption in vitro by a cartilage-derived anticollagenase factor (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-03-24
    Beschreibung: A cartilage-derived factor containing a specific collagenous inhibitor was found to block reversibly parathyroid hormone-stimulated 45Ca release from fetal rat bone in vitro. Morphologic and quantitative histometric examination revealed that this factor modulates osteoclastic activities.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Horton, J E -- Wezeman, F H -- Kuettner, K E -- New York, N.Y. -- Science. 1978 Mar 24;199(4335):1342-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/204011" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bone Resorption/*drug effects ; Calcium/metabolism ; Cartilage/*metabolism ; Enzyme Inhibitors/pharmacology ; Microbial Collagenase/*antagonists & inhibitors ; Organ Culture Techniques ; Osteoclasts/physiology/ultrastructure ; Parathyroid Hormone/antagonists & inhibitors ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 70
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    Chemotactic antibody (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-05-05
    Beschreibung: Antibody of the immunoglobulin G class to herpes simplex virus and antibody of the immunoglobulin M class to sheep red blood cells were coupled to the synthetic peptide formylmethionylleucylphenylalanine (fMet-Leu-Phe), which is chemotactic for both mononuclear and polymorphonuclear leukocytes. The resulting molecules were chemotactic and retained their antigen-binding activity. When antibodies coupled to fMet-Leu-Phe were incubated with antigen, the resulting immune complexes were also chemotactic. Chemotactic antibody may provide a potent means of enhancing the migration of inflammatory cells to specific sites.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Isturiz, M A -- Sandberg, A L -- Schiffmann, E -- Wahl, S M -- Notkins, A L -- New York, N.Y. -- Science. 1978 May 5;200(4341):554-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/205950" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Antibodies ; Antibodies, Viral ; Antigen-Antibody Complex ; Cells, Cultured ; Chemotaxis, Leukocyte/*drug effects ; Erythrocytes/immunology ; Immunoglobulin G ; Immunoglobulin M ; Inflammation/immunology ; Oligopeptides/*pharmacology ; Simplexvirus/immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 71
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    Light stimulates tyrosine hydroxylase activity and dopamine synthesis in retinal amacrine neurons (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-11-24
    Beschreibung: Retinal dopamine-containing amacrine neurons are rapidly activated by light, as shown by an increase in the rate of dopamine formation in vivo and a concomitant increase in the activity of tyrosine hydroxylase, measured in vitro with a subsaturating concentration of pteridine cofactor. Activation of tyrosine hydroxylase also occurs when isolated eyes from rats killed in the dark are exposed to a strobe light. Studies of amacrine neurons should provide basic data about the biochemical processing of visual information, as well as the physiological presynaptic regulatory mechanisms of dopamine-containing neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iuvone, P M -- Galli, C L -- Garrison-Gund, C K -- Neff, N H -- New York, N.Y. -- Science. 1978 Nov 24;202(4370):901-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/30997" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Circadian Rhythm ; Dopamine/*biosynthesis ; Enzyme Activation/radiation effects ; Kinetics ; *Light ; Male ; Neurons/metabolism ; Rats ; Retina/cytology/enzymology/*metabolism ; Tyrosine 3-Monooxygenase/*biosynthesis
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 72
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    Diurnal rhythm: effects on hepatic regeneration and hepatic regenerative stimulator substance (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-03-10
    Beschreibung: The effect of a controlled lighting schedule on the activity of a weanling rat liver extract that stimulates DNA synthesis in regenerating adult rat liver, and on the response of the test animals to the extract, has been investigated. Both activity of the extract and endogenous DNA synthesis in the weanling animals follow the same distinct diurnal rhythm. Reversal of the lighting schedule reverses the rhythm of endogenous DNA synthesis but activity of the extract no longer correlates with the peak of DNA synthesis. Diurnal rhythm also has a striking effect on DNA synthesis in the regenerating test animal, but the extract increases DNA synthesis to the same relative degree, regardless of the time of day the hepatectomy is performed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉LaBrecque, D R -- Feigenbaum, A -- Bachur, N R -- New York, N.Y. -- Science. 1978 Mar 10;199(4333):1082-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/564547" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn/physiology ; *Circadian Rhythm ; DNA/biosynthesis ; Hepatectomy ; Light ; Liver/*physiology ; *Liver Regeneration/drug effects ; Male ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 73
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    Selective depression of serum growth hormone during maternal deprivation in rat pups (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-09-15
    Beschreibung: Maternal deprivation was associated with a decline in immunoreactive growth hormone in the serum of rat pups. Pups that were returned to the mother showed a rapid reversal in this deprivation-induced decrease. The change in growth hormone concentration was not accompanied by changes in the concentrations of prolactin, thyrotropin, or corticosterone in the serum, but were correlated with alteration in the activity of ornithine decarboxylase in the brain. Treatment of neonatal rat pups with cyprohepatadine, a serotonin antagonist that suppresses growth hormone secretion, resulted in a significant decline in both serum growth hormone concentration and brain ornithine decarboxylase activity. These findings suggest that maternal deprivation elicits a specific suppression of growth hormone release which mediates the decrease in ornithine decarboxylase activity. The study is consistent with clinical findings of impaired growth hormone "responsitivity" in human maternal deprivation syndrome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kuhn, C M -- Butler, S R -- Schanberg, S M -- New York, N.Y. -- Science. 1978 Sep 15;201(4360):1034-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/684424" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn/physiology ; Brain/drug effects/enzymology ; Cyproheptadine/pharmacology ; Growth Hormone/*blood ; *Maternal Deprivation ; Ornithine Decarboxylase/metabolism ; Prolactin/blood ; Rats ; Time Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 74
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    Hippocampal aging and adrenocorticoids: quantitative correlations (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-12-08
    Beschreibung: Altered neural-endocrine relations have been proposed as factors in mammalian aging. In the same rats from three age groups we quantified astrocyte reactivity in hippocampus, performed radioimmunoassays for plasma adrenocorticoids, and measured adrenal weight. These variables were correlated in individual animals and generally increased with age. The findings are consistent with recent hypotheses that endocrine levels are related to brain aging, either as cause or effect.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Landfield, P W -- Waymire, J C -- Lynch, G -- New York, N.Y. -- Science. 1978 Dec 8;202(4372):1098-102.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715460" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adrenal Glands/*anatomy & histology ; *Aging ; Animals ; Astrocytes/cytology ; Corticosterone/*blood ; Hippocampus/*cytology ; Male ; Neuroglia/cytology ; Organ Size ; Rats ; Rats, Inbred F344
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 75
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    Limitation of excessive myelopoiesis by the intrinsic modulation of macrophage-derived prostaglandin E (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-02-03
    Beschreibung: The clonal proliferation of the committed granulocyte-macrophage stem cell is controlled by a balance between mutually opposing factors, colony stimulating factor and prostaglandin E, both of monocyte-macrophage derivation. Increases beyond a critical concentration of colony stimulating factor within the local milieu of the mononuclear phagocyte induces the coincident elaboration of prostaglandin E, a self-regulated response which serves to limit the unopposed humoral stimulation of myelopoiesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kurland, J I -- Bockman, R S -- Broxmeyer, H E -- Moore, M A -- New York, N.Y. -- Science. 1978 Feb 3;199(4328):552-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/304600" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bone Marrow Cells ; Cell Differentiation ; Cells, Cultured ; Colony-Stimulating Factors/*physiology ; Feedback ; Glycoproteins/*physiology ; Granulocytes/*cytology ; *Hematopoiesis ; Humans ; Leukocytes/*cytology ; Macrophages/cytology/*physiology ; Mice ; Models, Biological ; Monocytes/*physiology ; Prostaglandins E/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 76
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    Enkephalin-containing neurons visualized in spinal cord cell cultures (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-08-04
    Beschreibung: Neuronal cells, axons, and terminals containing immunoreactive enkephalin have been visualized in cultures of dissociated fetal spinal cord. These cultures may provide a valuable system in which to explore the effects of chronic drug treatment on the physiology of enkephalin-containing cells and their interactions with other cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Neale, J H -- Barker, J L -- Uhl, G R -- Snyder, S H -- New York, N.Y. -- Science. 1978 Aug 4;201(4354):467-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/351811" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Axons/metabolism ; Cells, Cultured ; Cytoplasm/metabolism ; Endorphins/*metabolism ; Enkephalins/*metabolism ; Fluorescent Antibody Technique ; Ganglia, Spinal/metabolism ; Mice ; Neurons/*metabolism ; Spinal Cord/cytology/embryology/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 77
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    Angiotensin regulates release and synthesis of serotonin in brain (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-12-08
    Beschreibung: Angiotensin II released serotonin from neuron terminals and accelerated synthesis of the serotonin. This increase in synthesis depended on the activation of tryptophan hydroxylase. A biphasic effect was observed: at high doses the stimulatory effect depended on conversion of angiotensin II to angiotensin III. At low doses an inhibitory effect was found, possible dependent on an angiotensin II metabolite. These actions represent a subtle regulation of the open-loop serotonin system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nahmod, V E -- Finkielman, S -- Benarroch, E E -- Pirola, C J -- New York, N.Y. -- Science. 1978 Dec 8;202(4372):1091-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/152460" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Angiotensin II/*analogs & derivatives/*pharmacology ; Angiotensin III/*pharmacology ; Animals ; Blood Pressure/drug effects ; Brain Stem/metabolism ; Enzyme Activation/drug effects ; Fenclonine/pharmacology ; Hypothalamus/metabolism ; Morphine/pharmacology ; Rats ; Receptors, Serotonin/drug effects ; Serotonin/*metabolism/pharmacology ; Tryptophan Hydroxylase/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 78
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    Cholecystokinin inhibits tail pinch-induced eating in rats (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-05-19
    Beschreibung: Peripheral administration of the COOH-terminal octapeptide of cholecystokinin in doses from 1 to 100 micrograms per kilogram of body weight (0.25 to 25.0 micrograms per rat) significantly antagonized tail pinch-induced eating in rats, an animal model for stress-induced human hyperphagia. Centrally administered cholecystokinin was effective only in high doses (3 micrograms into the cerebral ventricle). The finding that the minimal effective dose of cholecystokinin in suppressing stress-induced appetitive behavior is smaller after peripheral than central administration suggests that the peptide is acting on peripheral, as opposed to central nervous system, substrates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nemeroff, C B -- Osbahr, A J 3rd -- Bissette, G -- Jahnke, G -- Lipton, M A -- Prange, A J -- New York, N.Y. -- Science. 1978 May 19;200(4343):793-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/565535" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Behavior, Animal/drug effects ; Bradykinin/pharmacology ; Cholecystokinin/administration & dosage/*pharmacology ; Dose-Response Relationship, Drug ; Feeding Behavior/*drug effects ; Humans ; Male ; Peptide Fragments/pharmacology ; Rats ; Stress, Psychological
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 79
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    Leupeptin, a protease inhibitor, decreases protein degradation in normal and diseased muscles (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-02-03
    Beschreibung: The protease inhibitor leupeptin decreases protein degradation in rat skeletal and cardiac muscle incubated in vitro, while protein synthesis remains unaltered. Leupeptin also lowers protein breakdown in denervated rat muscles and affected muscles from mice with hereditary muscular dystrophy. Leupeptin may thus be useful in retarding tissue atrophy. Since homogenates of leupeptin-treated muscles had decreased cathepsin B activity, this lysosomal protease may play a role in protein turnover in normal and diseased muscles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Libby, P -- Goldberg, A L -- New York, N.Y. -- Science. 1978 Feb 3;199(4328):534-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/622552" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cathepsins/antagonists & inhibitors ; In Vitro Techniques ; Leupeptins/*pharmacology ; Lysosomes/enzymology ; Muscle Denervation ; Muscle Proteins/*metabolism ; Muscles/*enzymology ; Muscular Dystrophy, Animal/*metabolism ; Myocardium/enzymology ; Oligopeptides/*pharmacology ; Peptide Hydrolases/*metabolism ; Protease Inhibitors ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 80
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    Virus-induced diabetes mellitus: reovirus infection of pancreatic beta cells in mice (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-08-11
    Beschreibung: Reovirus type 3, passaged in pancreatic beta-cell cultures, produced an insulitis when inoculated into 1- to 2-week-old mice. By means of a double-label antibody technique, in which we used fluorescein-labeled antibody to reovirus and rhodamine-labeled antibody to insulin, reovirus antigens were found in beta cells. By electron microscopy, viral particles in different stages of morphogenesis were observed in insulin-containing beta cells but not glucagon-containing alpha cells. The infection resulted in destruction of beta cells, reduction in the insulin content of the pancreas, and alteration in the host's capacity to respond normally to a glucose tolerance test.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Onodera, T -- Jenson, A B -- Yoon, J W -- Notkins, A L -- New York, N.Y. -- Science. 1978 Aug 11;201(4355):529-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/208156" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antigens, Viral/analysis ; Cells, Cultured ; Diabetes Mellitus, Experimental/etiology/metabolism/*microbiology ; Diabetes Mellitus, Type 1/microbiology ; Insulin/metabolism ; Islets of Langerhans/metabolism/*microbiology ; Mammalian orthoreovirus 3/immunology ; Mice ; Reoviridae Infections/*complications ; Virus Replication
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 81
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    Antibody-dependent lymphocytotoxicity induced by immunoglobulin G from Hodgkin's disease splenic lymphocytes (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-01-06
    Beschreibung: Immunoglobulin G, produced in cultures of splenic lymphocytes obtained from patients with Hodgkin's disease, bound to a population of homologous peripheral blood lymphocytes and initiated antibody-dependent cell cytotoxicity in cultures from five out of eight patients. Two patients whose cultures produced negative results had minimal disease; the other was in remission. The target cells appear to be T lymphocytes; the effector cells bear Fc receptors that are inhibited by antigen-antibody complexes. Antibody-dependent cell cytotoxicity events may produce the anergy and lymphopenia often seen in Hodgkin's disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Longmire, R L -- Ryan, S -- McMillan, R -- Lightsey, A -- Heath, V -- New York, N.Y. -- Science. 1978 Jan 6;199(4324):71-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Hematology and Oncology, Scripps Clinic and Research Foundation, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17569485" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Antibody-Dependent Cell Cytotoxicity ; Cells, Cultured ; Hodgkin Disease/*immunology ; Humans ; Immunoglobulin G/*immunology ; Lymphocytes/*immunology ; Spleen/cytology/immunology ; T-Lymphocytes/*immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 82
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    Erythroid progenitors circulating in the blood of adult individuals produce fetal hemoglobin in culture (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-03-24
    Beschreibung: Erythroid colonies, raised from erythroid stem cells circulating in the peripheral blood of normal adult individuals, synthesize considerable amounts of fetal hemoglobin. In cultures from persons with sickling disorders, amounts of hemoglobin F that are known to inhibit sickling in vivo are produced. The results provide evidence that primitive erythroid progenitors are able to express the hemoglobin F production program and that cultures of mononuclear cells of the adult blood can be used to investigate the mechanisms involved in regulation of gamma-globin gene switching.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Papayannopoulou, T -- Nakamoto, B -- Buckley, J -- Kurachi, S -- Nute, P E -- Stamatoyannopoulos, G -- New York, N.Y. -- Science. 1978 Mar 24;199(4335):1349-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/628844" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Anemia, Sickle Cell/blood ; Cell Differentiation ; Cells, Cultured ; Fetal Hemoglobin/*biosynthesis ; Hematopoietic Stem Cells/cytology/*metabolism ; Hemoglobin A/biosynthesis ; Hemoglobin, Sickle/biosynthesis ; Humans ; Reticulocytes/metabolism ; Thalassemia/blood
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 83
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    Biologically active pituitary hormones in the rat brain amygdaloid nucleus (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-02-17
    Beschreibung: While an attempt was being made to identify the source of the growth hormone releasing factor present in cerebral spinal fluid of man, it was discovered that cells of the rat amygdaloid nucleus, grown in tissue culture, produce a material that is immunologically and chromatographically identical to growth hormone found in the pituitary. Immunoperoxidase staining revealed dense accumulation of the peroxidase-antibody to growth hormone complex in amygdala cells. Significant amounts of growth hormone and adrenocorticotropin could be extracted from this limbic structure. Extracts containing immunoequivalent amounts of growth hormone were measured by bioassay in hypophysectomized rats. Stimulation of the growth of epiphyseal cartilage by extracts of the amygdala was comparable to the stimulation by extracts of anterior pituitary glands. The stimulatory effect of amygdala extracts on adrenal and gonadal size and weight and on growth of thyroid follicular epithelium was also comparable to that of pituitary extracts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pacold, S T -- Kirsteins, L -- Hojvat, S -- Lawrence, A M -- New York, N.Y. -- Science. 1978 Feb 17;199(4330):804-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/203034" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adrenal Glands/drug effects ; Adrenocorticotropic Hormone/isolation & purification ; Amygdala/*analysis ; Animals ; Female ; Growth Hormone/*isolation & purification/pharmacology ; Hypophysectomy ; Male ; Organ Size/drug effects ; Ovary/drug effects ; Radioimmunoassay ; Rats ; Testis/drug effects ; Tibia/drug effects/growth & development
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 84
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    Crankcase oils: are they a major mutagenic burden in the aquatic environment? (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-04-21
    Beschreibung: Fractions from used crankcase oil enriched in polyaromatic hydrocarbons induced revertant colonies in Salmonella typhimurium strain TA 98 when activated by rat or trout liver extracts. The mutagenic activity was not due to benzopyrene or benzanthracene. Fractions from various crude and refined petroleums were nonmutagenic. Among various petroleum hydrocarbons entering inland and coastal waters, used crankcase oils may represent a major mutagenic burden.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Payne, J F -- Martins, I -- Rahimtula, A -- New York, N.Y. -- Science. 1978 Apr 21;200(4339):329-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/635591" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Biotransformation ; Fishes ; Liver/metabolism ; Mutagens/*metabolism ; Oils/metabolism ; *Petroleum ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 85
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    Rapid changes in brain benzodiazepine receptors after experimental seizures (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-11-24
    Beschreibung: Seizures induced in the rat by electroshock or by injections of pentylenetetrazol increase the specific binding of diazepam to putative receptor sites in cerebral cortical membranes. The enhancement of diazepam binding results from a rapid increase in the number of available binding sites rather than a change in receptor affinity. The postictal increase in cortical benzodiazepine receptors suggests that the cerebral cortex might be more sensitive to the anticonvulsant effects of the benzodiazepines after seizures. This observation may be related to the mechanism of action of these drugs in the treatment of recurrent seizures such as status epilepticus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paul, S M -- Skolnick, P -- New York, N.Y. -- Science. 1978 Nov 24;202(4370):892-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715447" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Anoxia/metabolism ; Binding Sites ; Brain/*metabolism ; Cerebral Cortex/metabolism ; Diazepam/*metabolism ; Electroshock ; Kinetics ; Male ; Pentylenetetrazole ; Rats ; Receptors, Drug/*metabolism ; Seizures/*metabolism ; Synaptosomes/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 86
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    Long-term treatment with lithium prevents the development of dopamine receptor supersensitivity (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-07-14
    Beschreibung: Long-term treatment of rats with haloperidol produced an increased sensitivity to the locomotor and stereotypic effect of apomorphine. This behavioral dopaminergic supersensitivity was accompanied by increased binding of [3H] spiroperidol in the striatum. Rats treated concurrently with lithium and haloperidol failed to develop both behavioral sensitivity to apomorphine and increased striatal dopamine receptor binding. The ability of lighium to prevent recurrent manicdepressive episodes may be related, in part, to its ability to stabilize dopaminergic receptor sensitivity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pert, A -- Rosenblatt, J E -- Sivit, C -- Pert, C B -- Bunney, W E Jr -- New York, N.Y. -- Science. 1978 Jul 14;201(4351):171-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/566468" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Apomorphine/pharmacology ; Corpus Striatum/metabolism ; Haloperidol/pharmacology ; Humans ; Lithium/*pharmacology ; Male ; Rats ; Receptors, Dopamine/*drug effects/metabolism ; Spiperone/metabolism ; Stereotyped Behavior/drug effects ; Time Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 87
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    Motor nerve sprouting and acetylcholine receptors (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-03-17
    Beschreibung: Sprouting of motor nerve terminals was evoked by functional denervation of skeletal muscles brought about by presynaptic blockade or disuse. The amount of sprouting, determined by morphometric measurement, was correlated with the level of extrajunctional acetylcholine receptors. Sprouting was inhibited by blockade of acetylcholine receptors with alpha-bungarotoxin. Extrajunctional acetylcholine receptors may play an important role in eliciting motor nerve terminal sprouting.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pestronk, A -- Drachman, D B -- New York, N.Y. -- Science. 1978 Mar 17;199(4334):1223-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/204007" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetylcholine/metabolism ; Animals ; Botulinum Toxins/pharmacology ; Bungarotoxins/*pharmacology ; Female ; Motor Neurons/*physiology ; *Muscle Denervation ; Nerve Endings/physiology/ultrastructure ; Neural Conduction/drug effects ; Neuromuscular Junction/*physiology ; Rats ; Receptors, Cholinergic/drug effects/*physiology ; Synaptic Transmission/drug effects ; Tetrodotoxin/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 88
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    Striatal nondopaminergic neurons: possible involvement in feeding and drinking behavior (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-06-09
    Beschreibung: Intracaudate injections of kainic acid destroy striatal neurons containing acetylcholine and gamma-aminobutyric acid but leave dopaminergic nerve terminals in this brain region intact. Rats injected with the drug are aphagic and adipsic, and have other behavioral abnormalities strikingly similar to those seen in animals with lesions in the dopaminergic nigrostriatal bundle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pettibone, D J -- Kaufman, N -- Scally, M C -- Meyer, E Jr -- Ulus, I -- Lytle, L D -- New York, N.Y. -- Science. 1978 Jun 9;200(4346):1175-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/653362" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Behavior, Animal/drug effects ; Caudate Nucleus/*drug effects/physiology ; Choline O-Acetyltransferase/metabolism ; Dopamine/metabolism ; Dose-Response Relationship, Drug ; Drinking Behavior/*drug effects ; Feeding Behavior/*drug effects ; Glutamate Decarboxylase/metabolism ; Kainic Acid/*pharmacology ; Male ; Posture ; Pyrrolidines/*pharmacology ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 89
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    beta-Endorphin is associated with overeating in genetically obese mice (ob/ob) and rats (fa/fa) (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-12-01
    Beschreibung: Small doses of the opiate antagonist naloxone selectively abolished overeating in genetically obese mice (ob/ob) and rats (fa/fa). Elevated concentrations of the naturally occurring opiate beta-endorphin were found in the pituitaries of both obese species and in the blood plasma of the obese rats. Brain levels of beta-endorphin and Leu-enkephalin were unchanged. These data suggest that excess pituitary beta-endorphin may play a role in the development of the overeating and obesity syndrome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Margules, D L -- Moisset, B -- Lewis, M J -- Shibuya, H -- Pert, C B -- New York, N.Y. -- Science. 1978 Dec 1;202(4371):988-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715455" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Disease Models, Animal ; Eating/drug effects ; Endorphins/antagonists & inhibitors/blood/*physiology ; Feeding Behavior/*physiology ; Female ; Male ; Mice ; Mice, Obese/*physiology ; Naloxone/pharmacology ; Obesity/genetics/*physiopathology ; Pituitary Gland/physiology ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 90
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    Ultraviolet radiation--induced chromosomal abnormalities in fetal fibroblasts from New Zealand black mice (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-09-08
    Beschreibung: Fibroblasts from New Zealand Black mouse fetuses manifest increased frequency of chromosomal breaks and interchanges after exposure to ultraviolet radiation when compared with cells from BABL/c fetuses. This chromosomal instability is similar to what has been reported in cells from patients with xeroderma pigmentosum and may be related to the chromosomally abnormal clones and malignancy previously reported in adult New Zealand Black mice.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reddy, A L -- Fialkow, P G -- Salo, A -- New York, N.Y. -- Science. 1978 Sep 8;201(4359):920-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/684417" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cells, Cultured ; *Chromosome Aberrations ; Chromosomes/*radiation effects ; Disease Models, Animal ; Dose-Response Relationship, Radiation ; Mice ; Mice, Inbred BALB C/physiology ; Mice, Inbred NZB/*physiology ; *Ultraviolet Rays ; Xeroderma Pigmentosum/physiopathology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 91
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    Compulsive, abnormal walking caused by anticholinergics in akinetic, 6-hydroxydopamine-treated rats (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-03-31
    Beschreibung: In otherwise profoundly akinetic rats that had been severely depleted of brain catecholamines, anticholinergic drugs caused excessive walking. The effect did not appear until 10 days after surgery and then increased with time, suggesting that a phenomenon analogous to denervation supersensitivity may be involved. If the animals walked into corners, they were unable to turn around or back out. Their gait (extremely short steps) was reminiscent of that of patients with Parkinson's disease. The results are consistent with a mutually antagonistic interaction between cholinergic and dopaminergic brain systems and emphasize certain complexities in this interaction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schallert, T -- Whishaw, I Q -- Ramirez, V D -- Teitelbaum, P -- New York, N.Y. -- Science. 1978 Mar 31;199(4336):1461-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/564552" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Atropine/*pharmacology/therapeutic use ; Catalepsy/chemically induced/drug therapy ; Gait ; Humans ; Hydroxydopamines/*pharmacology ; Locomotion/*drug effects ; Male ; Rats
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 92
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    Decrease in adrenergic axon sprouting in the senescent rat (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-11-17
    Beschreibung: When the septal area in young adult rats is denervated by a lesion of the fimbria-fornix, adrenergic fibers proliferate within the denervated area. The same operation performed on aged animals gives rise to a qualitatively similar but quantitatively less pronounced response. This reduction in reactive growth may reflect a decreased capacity of the aged brain to remodel its circuitry and restore lost function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scheff, S W -- Bernardo, L S -- Cotman, C W -- New York, N.Y. -- Science. 1978 Nov 17;202(4369):775-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715443" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adrenergic Fibers/cytology/*growth & development ; *Aging ; Animals ; Cell Differentiation ; Hippocampus/cytology ; Male ; Rats ; Septal Nuclei/cytology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 93
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    Tricyclic antidepressants: therapeutic properties and affinity for alpha-noradrenergic receptor binding sites in the brain (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-01-13
    Beschreibung: Tricyclic antidepressants vary in their capacity to cause psychomotor activation, to relieve agitated depressive states, and to cause sedation and hypotension. We have quantified relative potencies of tricyclic antidepressants in competing for the binding of 3H-labeled WB-4101 to alpha-noradrenergic receptor sites in rat brain membranes. Affinities of tricyclic drugs for alpha-noradrenergic receptor sites in the brain correlate well with the capacity of these agents to relieve psychomotor agitation and to induce sedation and hypotension; these affinities also correlate inversely with tendencies to elicit psychomotor activation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉U'Prichard, D C -- Greenberg, D A -- Sheehan, P P -- Snyder, S H -- New York, N.Y. -- Science. 1978 Jan 13;199(4325):197-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/202024" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antidepressive Agents, Tricyclic/*metabolism/therapeutic use ; Binding, Competitive ; Brain/*metabolism ; Humans ; Hypotension/chemically induced ; Psychomotor Agitation/*drug therapy ; Rats ; Receptors, Adrenergic/*metabolism ; Receptors, Adrenergic, alpha/*metabolism ; Structure-Activity Relationship
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 94
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    Prolactin binding sites in the rat brain (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-09-15
    Beschreibung: The principles of the competitive-binding assay were used in conjunction with light microscopic radioautography to demonstrate specific prolactin binding sites localized on ependyma of the rat choroid plexus, a previously unknown prolactin target tissue.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walsh, R J -- Posner, B I -- Kopriwa, B M -- Brawer, J R -- New York, N.Y. -- Science. 1978 Sep 15;201(4360):1041-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/684427" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Autoradiography ; Binding Sites ; Binding, Competitive ; Brain/cytology/*metabolism ; Female ; Iodine Radioisotopes ; Male ; Prolactin/*metabolism ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 95
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    Brain endolases as specific markers of neuronal and glial cells (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-01-20
    Beschreibung: There are three distinct enolase isoenzymes in brain; neuron-specific enolase (NSE), formerly referred to as neuron-specific protein, which is specifically localized in neurons, a nonneuronal enolase (NNE), and a third hybrid form. Light microscopy with immunocytochemical techniques has permitted localization of non-neuronal enolase. The NNE is located in glial cells with no staining of endothelial cells or neurons. Thus, NSE and NNE can be used as specific metabolic markers for neurons and glial cells, respectively.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schmechel, D -- Marangos, P J -- Zis, A P -- Brightman, M -- Goodwin, F K -- New York, N.Y. -- Science. 1978 Jan 20;199(4326):313-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/339349" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Brain/*enzymology ; Cross Reactions ; Immunoenzyme Techniques ; Isoenzymes/*metabolism ; Liver/enzymology ; Neuroglia/*enzymology ; Neurons/*enzymology ; Phosphopyruvate Hydratase/immunology/*metabolism ; Rats
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 96
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    Gene amplification and drug resistance in cultured murine cells (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-12-08
    Beschreibung: Resistance of mouse cells to the folate analog, methotrexate, results from selection of increasingly resistant cells on progressive increases of methotrexate in the culture medium. High-level resistance is associated with high rates of synthesis of dihydrofolate reductase and correspondingly high numbers of reductase genes. In some variants high resistance and gene copy number are stable in the absence of selection pressure, whereas in others they are unstable. Analogies are made to antibiotic and insecticide resistance wherein selection of organisms with increased capacity to counteract the drug effect results in emergence of resistance. Gene amplification may underlie many such resistance phenomena.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schimke, R T -- Kaufman, R J -- Alt, F W -- Kellems, R F -- New York, N.Y. -- Science. 1978 Dec 8;202(4372):1051-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715457" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alleles ; Cells, Cultured ; Crossing Over, Genetic ; DNA Replication ; *Drug Resistance ; Folic Acid Antagonists ; *Genes ; Methotrexate/*pharmacology ; RNA, Messenger/genetics ; Tetrahydrofolate Dehydrogenase/*genetics
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 97
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    Choline administration: modification of the central actions of atropine (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-01-06
    Beschreibung: The anticholinergic agent atropine decreases acetylcholine concentrations and increases high-affinity choline uptake in cortical and hippocampal regions of rat brain. Administration of choline 1 hour before atropine prevents both of these atropine-induced alterations. These findings suggest that alterations in acetylcholine precursor availability may modify the effects of centrally active anticholinergic agents.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wecker, L -- Dettbarn, W D -- Schmidt, D E -- New York, N.Y. -- Science. 1978 Jan 6;199(4324):86-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17569493" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetylcholine/*metabolism ; Animals ; Atropine/*pharmacology ; Biological Transport/drug effects ; Choline/*administration & dosage/*metabolism/pharmacology ; Cholinergic Antagonists/pharmacology ; Hippocampus/drug effects/*metabolism ; Male ; Mesencephalon/drug effects/*metabolism ; Rats ; Rats, Sprague-Dawley ; Sodium/metabolism ; Synaptosomes/drug effects/metabolism
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 98
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    Bone cells: a serum-free medium supports proliferation in primary culture (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-02-03
    Beschreibung: Bone-cells isolated from embryonic rat calvaria increase in number two-to threefold when cultured at high, but not at low, population densities in a serum-free medium that contains albumin. Cultured cells respond to parathyroid hormone and exhibit a marked rise in alkaline phosphatase activity during proliferation, which suggests the progressive differentiation or preferential growth of osteoblast-like cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burns, J K -- Peck, W A -- New York, N.Y. -- Science. 1978 Feb 3;199(4328):542-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/564080" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bone Development ; Bone and Bones/*cytology ; Cell Differentiation ; Cell Division ; *Cells, Cultured ; Culture Media ; Rats
    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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  • 99
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    Intraventricular alloxan eliminates feeding elicited by 2-deoxyglucose (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-12-15
    Beschreibung: Evidence suggests that alloxan reacts with membrane-bound glucoreceptors and that it competes with glucose molecules for these sites. We therefore administered small quantities of alloxan into the cerebrospinal fluid of rats to determine what effect this might have on their ability to react to changes of glucose concentration. Rats treated in this manner did not eat as much as controls in response to the intraperitoneal administration of 2-deoxyglucose or to a 24-hour fast, and they became hypoglycemic significantly sooner than controls when fasted. The data suggest that the function of brain glucoreceptors is to protect the body from sudden decreases of glucose and that these glucoreceptors play little if any role in the normal regulation or maintenance of feeding, body weight, or blood glucose concentrations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Woods, S C -- McKay, L D -- New York, N.Y. -- Science. 1978 Dec 15;202(4373):1209-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/725595" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alloxan/administration & dosage/*pharmacology ; Animals ; Deoxyglucose/antagonists & inhibitors/pharmacology ; Eating/*drug effects ; Female ; Glucose ; Injections, Intraventricular ; Rats ; Receptors, Drug/*drug effects
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 100
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    Disulfiram enhances pharmacological activity of barbital and impairs its urinary elimination (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-08-11
    Beschreibung: Disulfiram or diethyldithiocarbamate significantly enhanced the sleeping time induced by barbital in rats. At identical time intervals after rats were injected with barbital the concentration of barbital in the blood or brain of animals that had previously received disulfiram was significantly higher than the concentrations in the corresponding tissues of control animals. Urinary excretion of barbital was significantly reduced in disulfiram-treated animals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sharkawi, M -- Cianflone, D -- New York, N.Y. -- Science. 1978 Aug 11;201(4355):543-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663674" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Barbital/blood/*metabolism/pharmacology/urine ; Barbiturates/*metabolism ; Biotransformation/drug effects ; Brain/metabolism ; Disulfiram/*pharmacology ; Male ; Rats ; Sleep/drug effects ; Tissue Distribution
    Print ISSN: 0036-8075
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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