Changes in gastric acid secretion assayed by endoscopic gastrin test before and after Helicobacter pylori eradication |
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Authors: | Iijima K Ohara S Sekine H Koike T Kato K Asaki S Shimosegawa T Toyota T |
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Institution: | Third Department of Internal Medicine, Tohoku University School of Medicine, Sendai, Miyagi, Japan. |
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Abstract: | BACKGROUND: It remains controversial whether or not Helicobacter pylori infection causes altered gastric acid secretion. A novel test for evaluating gastric acid secretion (endoscopic gastrin test; EGT) has recently been developed. AIM: To investigate by EGT the effects of H pylori eradication on the state of gastric acid secretion in patients with peptic ulcer. METHODS: Twenty six patients with duodenal ulcer and 33 with gastric ulcer, for all of whom H pylori infection had been documented, were studied by EGT, histological examination of gastric mucosa, and measurement of plasma gastrin levels before and one and seven months after H pylori eradication. RESULTS: In patients with duodenal ulcer, the mean EGT value before H pylori eradication was higher than that in H pylori negative controls, but it had decreased significantly seven months after the treatment. In contrast, the mean EGT value of patients with gastric ulcer before H pylori eradication was lower than that in H pylori negative controls, but it had increased one month after the treatment; this was followed by a slight decrease at seven months. In both groups, mean EGT values seven months after the treatment were not significantly different from the mean control value. CONCLUSIONS: The reduced acid secretion in gastric ulcer patients and gastric acid hypersecretion in duodenal ulcer patients were both normalised after the clearance of H pylori. |
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Keywords: | acid secretion duodenal ulcer endoscopic gastrin test (EGT) gastric ulcer Helicobacter pylori |
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