Abstract
In an attempt to elucidate the etiology of acute gastric bleeding and/or erosion and chronic peptic ulcer, a measurement of gastric juice and mucosal pepsin was carried out in surgically-treated patients. Patients with massive gastric mucosal bleeding in the fundic gland area showed high levels of fundic mucosal pepsin without acid-pepsin appearance in the gastric contents. In these patients, a significantly high value of the peptic activity ratio of gastric mucosa to gastric juice (MJPR, 36.4 +/- 6.7) was observed. It can be suggested that transient blockage of pepsin output from peptic cells with occur in the course of the acute mucosal bleeding, while acid-peptic digestion could be carried out within the fundic gland mucosa. On the other hand, a close correlation between relatively high acid-and-pepsin concentration of the gastric contents and a low level of MJPR (5.6 +/- 1.2) was observed in patients with chronic gastric ulcer. Patients who had a gastric ulcer within the pyloric gland mucosa had a highest acid-peptic activity among three groups with ulcers in fundic gland area, border zone and pyloric gland area. There is a rule that acid-peptic activity becomes low when the site of gastric ulcer moves from pylorus to fundus. A marked increase in acid-and-pepsin secretion into the gastric cavity was observed in patients suffering from chronic duodenal ulcer showing the lowest level of MJPR (3.40 +/- 0.50).
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