饲粮和采食对成年马餐后血清胃泌素和胰岛素浓度的影响。

G B Smyth, D W Young, L S Hammond
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引用次数: 51

摘要

胃泌素是唯一已知的能刺激盐酸分泌的激素。它对胃肠道粘膜的特定部位也有营养作用。利用放射免疫测定技术,测定了6匹成年马餐后血清胃泌素和胰岛素浓度,以确定不同饮食对胃泌素浓度的影响。测量胰岛素浓度是为了支持胃泌素的分泌模式,因为胰岛素的分泌模式是已知的。给马喂海滨百慕大干草,或每天两次喂5公斤完全颗粒饲料,5公斤商业甜饲料或5公斤甜饲料加干草。单独饲喂干草后,血清胃泌素和胰岛素浓度变化不大。含有更容易获得的营养物质(颗粒饲料、甜饲料)的口粮可显著增加餐后血清胃泌素和胰岛素浓度。胃泌素浓度也会随着喂食时间的长短而变化,但在注射胰岛素时没有发现这种情况。这些结果表明,饲粮组成和饲喂时间显著影响胃泌素分泌,从而可能影响胃酸分泌。胃(胃泌素分泌)似乎对饮食的变化有一些适应,但这并没有伴随着内分泌胰腺(胰岛素分泌)的适应迹象。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of diet and feeding on postprandial serum gastrin and insulin concentration in adult horses.

Gastrin is the only hormone known to stimulate secretion of hydrochloric acid. It also has trophic effects on specific parts of the mucosa of the gastrointestinal tract. Using radioimmunoassay techniques, postprandial serum gastrin and insulin concentrations were measured in six adult horses to establish effects of different diets on gastrin concentrations. Insulin concentrations were measured to provide support to the patterns of gastrin secretion because patterns of insulin secretion were already known. The horses were fed coastal bermuda hay, or twice daily 5 kg of a complete pelleted ration, 5 kg of commercial sweet feed or 5 kg of the sweet feed together with hay. There was little change in serum gastrin or insulin concentrations after feeding hay alone. Rations containing more readily available nutrients (pellets, sweet feed) produced significant increases in postprandial serum gastrin and insulin concentrations. Gastrin concentrations also varied according to the duration of feeding each diet, but this was not seen with insulin. These results indicated that gastrin secretion, and therefore possibly gastric acid secretion, were markedly influenced by dietary composition and duration of feeding a diet. There appeared to be some adaptation of the stomach (gastrin secretion) to changes in diet, but this was not accompanied by indications of adaptation in the endocrine pancreas (insulin secretion).

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