The stomach, cholecystokinin, and satiety

Research output: Contribution to journalArticle

Abstract

The stomach of the rhesus monkey empties liquids in a fashion that varies with the character of the solutions. Physiological saline empties exponentially. Glucose solutions empty biphasically - rapidly for the first minutes, then slowly and proportionately to glucose concentration to deliver glucose calories through the pylorus at a regulated rate (0.4 kcal/min). This prolonged and regulated second phase of gastric emptying depends on intestinal inhibition of the stomach. Cholecystokinin (CCK), a hormone released by food in the intestine, is an inhibitor of gastric emptying. In vitro receptor autoradiography demonstrates CCK receptors to be clustered on the circular muscle of the pylorus. Exogenous CCK, in doses that inhibit gastric emptying, will reduce food intake only if combined with an infusion of saline in the stomach. These observations indicate how gastric distension can be a means for provoking satiety. The variably sustained distension produced by the stomach's slow, calorically regulated emptying could prolong intermeal intervals and thus permit high-calorie meals to inhibit further caloric intake over time. CCK, by directly inhibiting gastric emptying during a meal, could promote gastric distension and so restrict the duration and size of individual meals.

Original languageEnglish (US)
Pages (from-to)1384-1390
Number of pages7
JournalFederation proceedings
Volume45
Issue number5
StatePublished - 1986

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Cholecystokinin
Stomach
Gastric Emptying
Meals
Pylorus
Glucose
Cholecystokinin Receptors
Energy Intake
Macaca mulatta
Autoradiography
Intestines
Eating
Hormones
Food
Muscles

ASJC Scopus subject areas

  • Medicine(all)

Cite this

The stomach, cholecystokinin, and satiety. / McHugh, Paul R; Moran, Timothy H.

In: Federation proceedings, Vol. 45, No. 5, 1986, p. 1384-1390.

Research output: Contribution to journalArticle

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