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  • 1
    Digitale Medien
    Digitale Medien
    New isoflavone glucosides from the bark of Cladrastis platycarpa
    Amsterdam : Elsevier
    Phytochemistry 13 (1974), S. 757-758 
    Details
    ISSN: 0031-9422
    Schlagwort(e): 8-methoxyretusin-7-O-β-glucosylglucoside ; Cladrastis platycarpa ; Leguminosae ; formononetin-7-O-β-glucosylglucoside. ; isoflavone glucosides ; platycarpanetin-7-O-β-monoglucoside
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0031-9422(00)91413-4
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Flavonoids from the wood of Cladrastis platycarpa
    Amsterdam : Elsevier
    Phytochemistry 15 (1976), S. 354-355 
    Details
    ISSN: 0031-9422
    Schlagwort(e): Cladrastis platycarpa ; Leguminosae ; bayin. ; cladrastin-7-O-β-D-glucoside ; flavone-C-glucoside ; fujikinin ; isoflavone ; isoflavone-O-glucoside ; platycarpanetin-7-O-β-D-glucoside ; pseudobaptigenin
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0031-9422(00)89040-8
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  • 3
    Digitale Medien
    Digitale Medien
    Restoration by histamine of the calcium-dependent electrical and mechanical response in the guinea-pig papillary muscle partially depolarized by potassium (1976)
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 294 (1976), S. 261-269 
    Details
    ISSN: 1432-1912
    Schlagwort(e): Histamine ; Ca2+-dependent action potential ; H2-receptor ; cAMP ; Guinea-pig papillary muscle
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Electrophysiological and mechanical effects of histamine were observed in guinea-pig papillary muscle which had been depolarized and rendered inexcitable by elevation of potassium concentration in Tyrode solution to 27 mM. 1. Histamine (3×10−7 to 3×10−5 M) restored the action potential and tension development. The amplitude of the action potential was increased by 31.6 mV/10-fold increase in extracellular Ca2+ concentration. Nifedipine (10−6 M) abolished the electrical and mechanical responses which had been restored by histamine (10−5 M) but TTX (10−5 M) did not affect them. Reduction of the extracellular Na+ concentration to one half decreased the amplitude and the maximum rate of rise of the action potential restored by histamine (10−5 M) while the peak tension was increased and an after-contraction occurred. 2. The maximum rate of rise and the amplitude of the action potential restored by histamine (10−5 M) decreased with increase in stimulus frequency from 0.1–1.6 Hz. The peak tension decreased and then increased. The shape of the developed tension was also changed. In the presence of caffeine (1 mM), the only effect of an increase in stimulus frequency was a decrease in peak tension but the change in the shape of developed tension did not occur. 3. The electrical and mechanical responses restored by histamine (3×10−6 or 10−5 M) were depressed by metiamide (3×10−6 M) but not by diphenhydramine (10−5 M) or bufetolol (10−6 M). 4. The electrical response restored by histamine (10−6 or 10−5 M) was enhanced by papaverine (10−5 M) and depressed by N-methylimidazole (10 mM). It is concluded that histamine may enhance the slow inward Ca2+ current mediated by histamine H2-receptors and the adenylate cyclase system in ventricular muscle and that the positive inotropic action of histamine may be attributed to these mechanisms.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00508394
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