The effect of sodium taurocholate instillation on the stimulated stomachs of patients with duodenal ulceration has been investigated. Instillation into the stomach of sodium taurocholate significantly reduced pentagastrin stimulated volume and outputs of both acid and sodium, with no change in the calculated volume of duodenogastric reflux. These observations are not consistent with the back-di...

By continuous monitoring of a solid meal labelled with a radiopharmaceutical it has been possible to determine the effects of drugs on gastric emptying and motility during a single study. Predictably hyoscine delayed, and bethanechol increased, the rate of gastric emptying. Pentagastrin initially produced marked antral activity resulting in a physiological stricture and subsequent delay in the ...

Contrary to the small amount of published evidence, but in accordance with clinical impression, we have found an increased incidence of peptic ulceration in people with chronic renal failure. Hyperacidic secretion in response to a standard pentagastrin test occurs in patients established on long-term dialysis treatment. The traditional liability of azotaemic patients to peptic ulceration seems ...

The inihibitory effect of various doses of ranitidine and cimetidine on pentagastrin stimulated volume, acid, and pepsin secretion was studied in 8 healthy volunteers. Both compounds inhibited all three variables in a dose dependent manner with an average ID50 of approximately 5 mg for ranitidine and of approximately 41 mg for cimetidine. On a molar basis ranitidine is about 11 times more poten...

The effects of cholecystokinin receptor antagonist, dipentyl-3,4-dichloroproglumide (DDP), on stimulated pancreatic and gastric secretion were studied in the rat. DDP dose-dependently inhibited cholecystokinin-stimulated amylase release from dispersed acinar cells. In vivo, DDP inhibited cholecystokinin octapeptide-stimulated amylase and protein secretion. DDP also inhibited pentagastrin-stimul...

By continuous monitoring of a solid meal labelled with a radiopharmaceutical it has been possible to determine the effects of drugs on gastric emptying and motility during a single study. Predictably hyoscine delayed, and bethanechol increased, the rate of gastric emptying. Pentagastrin initially produced marked antral activity resulting in a physiological stricture and subsequent delay in the ...

This thesis includes studies of the effect of mild stress on brain cholecystokinin (CCK), anatomy of markers for CCK-ergic transmission in the brain and the systemic effect of CCK receptor stimulation in a clinical test for anxiety and fear. CCK is a brain-gut peptide acting as a neurotransmitter in mammalian brain via CCKA (CCK1) and CCKB (CCK2) receptors. In the brain, CCK is widely distribut...

Neurotensin has been shown to inhibit gastric acid secretion when administered in pharmacological doses, but no information has been available concerning its possible dose-related effect during intravenous infusion. In this study, a dose-related and reversible inhibitory effect of neurotensin was demonstrated in pentobarbital-anesthetized female Sprague-Dawley rats. The rats underwent continuou...