Abstract
We studied the effect of intravenous administration of a gastrin-receptor antagonist (proglumide) on gastric acid secretion and serum gastrin in three patients with Zollinger-Ellison syndrome. Proglumide administered as a bolus injection (50 mg/kg) or as an infusion (50 mg/kg hour and 100 mg/kg hour) or as a combination of bolus injection and infusion (50 mg/kg I.V. followed by 50 mg/kg hour) inhibited gastric acid secretion by 13-62%. Cimetidine (2 mg/kg I.V. followed by 2 mg/kg hour) inhibited gastric acid secretion by 83-86%. Neither proglumide nor cimetidine significantly influenced serum gastrin concentrations. We conclude that proglumide is a relatively weak inhibitor of gastric acid secretion in patients with the Zollinger-Ellison syndrome.
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