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  • Title: [Effect of cholecystokinin and its antagonists lorglumide, devazepide, and L-365,260 on gastrointestinal motility in rats].
    Author: Wang SX.
    Journal: Zhongguo Yao Li Xue Bao; 1993 Sep; 14(5):443-6. PubMed ID: 8010038.
    Abstract:
    Cholecystokinin (CCK) plays an important role in gallbladder contraction and gut motility. Sincalide (CCK-8) evoked guinea pig isolated ileum contraction at 10(-5)-10(-1) mumol.L-1 in a concentration-dependent manner, EC50 being 207 pmol.L-1. It delayed the gastric emptying as well. The rate of inhibition of gastric emptying was 71 +/- 12% at 100 micrograms.kg-1 by ip. Sincalide antagonists: lorglumide, devazepide, and L-365,260 antagonized the ileal smooth muscle response to sincalide in a concentration-dependent manner. Their pA2 were 7.30, 10.02, and 7.77, respectively. Lorglumide, devazepide, and L-365,260 inhibited the delaying of gastric emptying evoked by sincalide. The IC50 were 0.11, 0.0064, and 0.66 mg.kg-1, respectively.
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