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  • 1
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Pharmacology 12 (1972), S. 287-316 
    ISSN: 0362-1642
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 23 (1970), S. 0 
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The authors mention the importance of zine in plants, both as a toxic element in high concentration and as an indispensable one to some stages of cellular metabolism.They study the localization of this oligo-element by means of histochemical methods in Hordeum vulgare.Zinc is found in the cytoplasm of the meristematic cells of the roots, in the cells of liber and on the grids of liber itserf. In the chlorophyllian parenchym, zinc is localized as minute particles in the near vicinity of chloroplasts.The authors suggest that zinc interferes with the growth of plants; it seems to be a co-enzyme to carbo-anhydrase and it modifies the physico-chemical conditions of extractibility of chlorophyll.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Histochemistry and cell biology 28 (1971), S. 38-54 
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Der Stoffwechsel der Gamma-amino-Buttersäure (GABS) wurde mit Hilfe einer klassischen chromogenen histochemischen Methode (Nachweis von GABS-Transaminase→Succin-semialdehyd-Dehydrogenase) sowie mit licht- und elektronenmikroskopischer Autoradiographie des Enzymhemmstoffes 14C-Thiosemicarbazid im Hippocampus der Ratte untersucht. Die histochemische wie auch die autoradiographische Methode beweisen eine gliozelluläre Lokalisation des GABS-Stoffwechsels, der sich hauptsächlich an glioneuronalen Zwischenmembranen konzentriert. Sich widersprechende Angaben der einschlägigen biochemischen Literatur können anhand unserer Ergebnisse interpretiert werden. Die glio-zelluläre Lokalisation des limbischen GABS-Stoffwechsels eröffnet neue Perspektiven für die neurophysiologische Interpretierung und pharmakotherapeutische Beeinflussung der Anomalien der Verhaltens-Reflexmechanismen.
    Notes: Summary GABA-metabolism in the rat hippocampal formation has been studied by means of classical chromogenic histochemistry (localisation of the GABA-transaminase→succinic semialdehyde dehydrogenase system) and by means of light- and electron microscopic autoradiographic localization of the enzyme-inhibitor 14C-thiosemicarbazide. Both the histochemical and the autoradiographic approaches proved a gliocellular localization of GABA metabolism, concentrated at glio-neuronal interfaces. Contradictory data of relevant biochemical literature can readily be explained on the basis of these results, offering new perspectives for neurophysiological interpretation and pharmacotherapeutical treatment of behavioral limbic disorders.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1041
    Keywords: Savoxepine ; Neuroleptic drug ; dopamine D2 receptor antagonist ; positron emission tomography ; striatal receptor binding ; healthy volunteers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The extent and duration of striatal dopamine-D2 receptor occupancy by savoxepine in humans has been studied using positron emission tomography with [11C]-raclopride, in order to investigate why the anticipated favourable ratio between its extrapyramidal and antipsychotic effects was not achieved in practice. After 0.25 mg savoxepine, striatal D2 receptor occupancy peaked at 50–60% after 24–36 h and disappeared within 6 days. After doses of 0.1 mg to 0.5 mg, D2 receptor occupancy in the putamen and caudate nucleus increased from 20 to 70% 3–7 h after administration and amounted to 40 to 75% at the peak time (20–29 h). This suggests that cumulative D2 receptor blockade would occur if equal or increasing doses of savoxepine were given repeatedly. Extrapyramidal adverse-effects would be likely to occur under such circumstances. An adequate test of the theory that preference for hippocampal dopamine D2 receptors with afford a good therapeutic ratio requires an alternative dosing regimen.
    Type of Medium: Electronic Resource
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