Effects of loperamide on the motility of the isolated intestine in guinea pigs, rats and dogs (author's transl)

Nihon Heikatsukin Gakkai zasshi
S NakayamaM Mizutani


Effects of Loperamide on the motility of the isolated intestine in guinea-pigs, puppies and rats were examined. The spontaneous contractions of the small intestine and colon in puppies were inhibited at relatively high concentration of the agent (10(-5) g/ml). The peristaltic reflex in the guinea-pig ileum was slightly inhibited at concentrations of 10(-8) to 10(-7) g/ml, and was completely abolished at 10(-6) g/ml. The agent (2X10(-7) g/ml) inhibited the longitudinal contraction of the guinea-pig ileum elicited by transmural electric stimulation. The agent (10(-5) g/ml) inhibited the acetylcholine-induced contraction of the colon and small intestine in puppies, and induced the hyperpolarization of the membrane potential and the abolition of spike potentials of the intestinal muscle in rats.


Jun 1, 1987·Digestive Diseases and Sciences·J FioramontiL Bueno
Mar 1, 1984·Naunyn-Schmiedeberg's Archives of Pharmacology·U M Farack, K Loeschke
Jan 1, 1983·Archives of Disease in Childhood·B K SandhuJ T Harries
Sep 1, 1981·Naunyn-Schmiedeberg's Archives of Pharmacology·U M FarackK Loeschke

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