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  • Title: Effect of calcitonin on gastric emptying and on postprandial gastrin and insulin release in patients with type I gastric ulcer.
    Author: Jonderko G, Jonderko K, Gołab T.
    Journal: Neth J Med; 1990 Aug; 37(1-2):11-6. PubMed ID: 2215826.
    Abstract:
    In a double-blind placebo-controlled study, the effect of calcitonin on gastric emptying and on serum concentrations of gastrin, insulin, glucose, calcium and phosphorus after a mixed solid-liquid meal was examined in six patients with type I gastric ulcer. Synthetic salmon calcitonin 415 pmol i.v. was given as a bolus followed by a 90-min infusion to reach an overall dose of 62.25 pmol.kg-1. Gastric emptying of a radiolabelled meal was measured with a gamma camera. Calcitonin suppressed gastric emptying in all patients examined. The mean gastric transit time, MTT90, increased from 38.1 +/- 0.4 min after placebo to 43.1 +/- 0.6 min after calcitonin (P less than 0.001). Calcitonin significantly blunted the postprandial gastrin release: AUC0-90 10,398 +/- 2886 ng. l-1 min (placebo) and 8238 +/- 2573 ng. l-1 min (calcitonin), P less than 0.05, and abolished the postprandial insulin release--AUC0-90 2244 +/- 230 mU.l-1 min (placebo) vs. 638 +/- 198 mU.l-1 min (calcitonin), P less than 0.01. A steady increase in the serum glucose during calcitonin infusion, reaching up to 5.6 +/- 0.31 mmol.l-1 at the end of the infusion, was observed. Calcitonin did not significantly affect serum calcium or phosphorus concentrations. The authors conclude that a delayed gastric emptying is to be expected in patients undergoing calcitonin treatment.
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