Abstract
Fasting and meal-stimulated serum gastrin and glucose levels were measured in 11 patients before and 3 months after gastroplasty for morbid obesity. Overall blood glucose levels were significantly reduced after surgery (P less than 0.05), whereas the response to a meal was not influenced to any significant degree (P greater than 0.10). The fasting serum gastrin level was not significantly influenced by gastroplasty (P greater than 0.10). Postprandial serum gastrin increased significantly independent of gastroplasty (P less than 0.001). The presence of a marginally significant (0.10 greater than P greater than 0.05) interaction between postprandial gastrin levels and operation raises the possibility that gastroplasty additionally increases the postprandial serum gastrin level.
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