PMID: 1203620Nov 1, 1975Paper

Effect of amodiaquine on gastric histamine methyltransferase and on histamine-stimulated gastric secretion

British Journal of Pharmacology
H BarthH Troidl

Abstract

1 Amodiaquine was found to be a potent inhibitor in vitro of gastric histamine methyltransferase from human and canine corpus and from pig antrum. The ID50 for the enzyme, purified from pig antrum mucosa by ultracentrifugation and chromatography on DEAE-cellulose, was 2.5 muM. 2 In six dogs with Heidenhanin pouches the maximum secretory response to histamine (40 mug/kg i.m.) was augmented by i.m. injection of amodiaquine. The augmentation depended on the dose of amodiaquine, the optimum effect (40% increase in volume of gastric juice, 80% in acid output) being achieved with 2 mg/kg. The maximum secretory response to betazole was also enhanced by amodiaquine. 3 It was suggested that amodiaquine may enhance the histamine and betazole stimulated gastric secretion by an inhibition of gastric histamine methyltransferase in vivo.

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Citations

May 1, 1989·World Journal of Surgery·W Lorenz, M Rothmund
Jul 1, 1982·Agents and Actions·J G GerberA S Nies
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Sep 20, 2005·Journal of Molecular Biology·John R HortonXiaodong Cheng
Apr 28, 2018·Journal of Basic and Clinical Physiology and Pharmacology·Kazeem O AjeigbeSamuel Babafemi Olaleye

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