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- W1429789039 abstract "Motor effects of cholecystokinin octapeptide (CCK-OP) on rat antrum, pylorus, and duodenum have been studied in vitro under standard conditions. Intraluminal pressure changes were simultaneously measured at the three locations using a perfusion manometric system with a novel intraluminal pressure-sensor device. This device comprised an acrylic cast of the rat gastroduodenal tract containing the perfusion catheters that reached the surface of the cast with their outlets in the antrum, pylorus, and duodenum. A selective and sensitive intraluminal local pressure measurement was achieved with this pressure sensor due to its shape. CCK-OP increased base-line pressure in the antrum, pylorus, and duodenum; frequencies of phasic contractions in the antrum and pylorus; and amplitudes in the duodenum. The peptide also decreased contraction amplitudes in the antrum and pylorus and frequency of phasic contractions in the duodenum. It is concluded that the novel intraluminal pressure sensor is a useful tool for measuring local pressure changes in the gastroduodenal tract of the rat. In this experimental model, effects of CCK-OP on antral, pyloric, and duodenal base-line pressure are comparable with those observed in isolated muscle strips and in the intact organ of humans, dogs, and opossums. A different behavior, however, was observed in the force of antral and frequency of duodenal phasic contractions." @default.
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- W1429789039 date "1983-03-01" @default.
- W1429789039 modified "2023-09-27" @default.
- W1429789039 title "Measurement of cholecystokinin octapeptide-induced motility of rat antrum, pylorus, and duodenum in vitro" @default.
- W1429789039 doi "https://doi.org/10.1152/ajpgi.1983.244.3.g261" @default.
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