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Comp Biochem Physiol C. 1986;85(1):57-9.

Motility of isolated mammalian gastric fundus.


Gastric fundus strips (GFS) of rats, guinea-pigs, rabbits, cats and humans, but not of dogs, show spontaneous phasic contractions in vitro. Rabbit, cat, dog and human GFS exhibit dose-dependent responses to acetylcholine (ACh), histamine (His), serotonin (5-HT) and KCl. Guinea-pig drug-induced responses are not dose-dependent. Rat GFS does not respond to His. ED50S for KCl are always higher than for other agonists. ED50S for 5-HT are lower than for other drugs in rats and cats, but not different in other species. Maximal GFS contractions induced by ACh are usually higher than those induced by other drugs.

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