Role of intraduodenally administered enterostatin in rats: inhibition of food.

Role of intraduodenally administered enterostatin in rats: inhibition of food.
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十二指肠内给予大鼠肠抑素的作用:抑制食物。

DOI:
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发表时间:
1996
期刊:
Obesity Research
影响因子:
--
通讯作者:
C. Erlanson‐Albertsson
C. Erlanson‐Albertsson
中科院分区:
--
文献类型:
--
作者:
J. Mei;C. Erlanson‐Albertsson

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据报道,肠抑素的中枢和外周给药可减少大鼠的脂肪或高脂肪食物摄入。肠抑素是在肠腔内脂肪消化过程中胰蛋白酶裂解胰腺前脂肪酶而在肠腔内形成的。本实验旨在测试肠内输注后肠抑素是否会以与脑室内或静脉内施用肠抑素类似的方式影响食物摄入。给雌性Sprague-Dawley大鼠安装十二指肠导管,并适应每天6小时的喂养时间表。10天后,将肠抑素(5.65和11.3 nmol/kg/min)或生理盐水注入十二指肠,并测量摄食量。肠抑素显著减少高脂肪食物的摄入量在6小时的喂养,但对低脂食物的摄入量没有抑制作用。在肠抑素输注液中加入丁卡因可阻断肠抑素的饱足效力。这些结果支持肠抑素作用的前吸收位点的假设。
Central and peripheral administration of enterostatin have been reported to reduce fat or high-fat food intake in rats. Enterostatin is formed in the intestinal lumen by tryptic cleavage of pancreatic procolipase during intraluminal fat digestion. The present experiments were designed to test if enterostatin following intraintestinal infusion would affect food intake in a similar way as intracerebraventricularly or intravenously administered enterostatin. Female Sprague-Dawley rats were fitted with a duodenal catheter and adapted to feeding schedule for 6 hours each day. After 10 days enterostatin (5.65 and 11.3 nmol/kg/min) or saline were infused into the duodenum and food intake measured. Enterostatin significantly reduced high-fat food intake during the 6 hours of feeding, but had no inhibitory effect on low-fat food intake. Addition of tetracaine to the enterostatin infusates blocked the satiating potency of intestinal enterostatin. These results support the hypothesis of a preabsorptive site of action for enterostatin.
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