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首页> 外文期刊>Brain research >Feeding response to a potent prolactin-releasing peptide agonist in lean and obese Zucker rats.
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Feeding response to a potent prolactin-releasing peptide agonist in lean and obese Zucker rats.

机译:肥胖和肥胖的Zucker大鼠对有效的催乳激素释放肽激动剂的喂养反应。

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摘要

Prolactin (PRL)-releasing peptide (PrRP) is a new peptide present in the hypothalamus and in the circulation that may be involved in the regulation of feeding behavior. In the present experiment, we measured it in a well-known model of obesity, the Zucker rat. We also measured the reactivity of this animal in terms of food intake after the intraperitoneal (I.P.) or central injection of PrRP-13, a potent PrRP agonist. Plasma PrRP levels were 35% lower in obese fa/fa than in the lean rats (p<0.005). I.P. injections of PrRP-13 (10 mg/kg) stimulated food intake in lean and had no effect in obese rats (p<0.001). Intracerebral injections of PrRP-13 had no effects in both genotypes. Altogether, these results do not support a role for PrRP in the hyperphagia and obesity syndrome of the Zucker rat.
机译:催乳素(PRL)释放肽(PrRP)是下丘脑和循环中存在的一种新肽,可能参与进食行为的调节。在本实验中,我们在著名的肥胖模型Zucker大鼠中对其进行了测量。我们还通过腹膜内(I.P.)或集中注射PrRP-13(一种有效的PrRP激动剂)后的食物摄入量来测量该动物的反应性。肥胖fa / fa中的血浆PrRP水平比瘦大鼠低35%(p <0.005)。 I.P.注射PrRP-13(10 mg / kg)可以刺激瘦肉的食物摄入,并且对肥胖大鼠没有影响(p <0.001)。脑内注射PrRP-13对两种基因型均无影响。总体而言,这些结果不支持PrRP在Zucker大鼠食欲亢进和肥胖综合症中的作用。

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