Abstract
The effect of distension of the stomach by air (in vitro) upon the ultrastructural picture of gastric endocrine cells in rats starved for 72 hours was investigated. Distension of the stomach by air in vitro, lasting for 5, 10, 15 and 20 minutes, resulted in massive dissolution of gastrin granules that had accumulated in the course of starvation. In AL, D1, EC and ECL cells distension of the stomach by air failed to induce dissolution of granular content or release of granules by any other mechanism. In AL and D1 cells accumulation of secretory granules caused by starvation was observed, the ultrastructure of EC and ECL cells remained unchanged both under the effect of starvation and distension. Dilatation of endoplasmic reticulum profiles as well as other changes on some cell organelles observed on endocrine cells after distension of the stomach by air in vitro are due to the effect of autolysis.
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