Central infusions of leptin and GLP-1-(7-36) amide differentially stimulate c-FLI in the rat brain.

Central infusions of leptin and GLP-1-(7-36) amide differentially stimulate c-FLI in the rat brain.
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瘦素和 GLP-1-(7-36) 酰胺的中枢输注对大鼠大脑中的 c-FLI 有不同的刺激作用。

DOI:
10.1152/ajpregu.1996.271.4.r1096
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发表时间:
1996
期刊:
The American journal of physiology.
影响因子:
--
通讯作者:
Seeley,RJ
Seeley,RJ
中科院分区:
--
文献类型:
--
作者:
VanDijk,G;Thiele,TE;Donahey,JC;Campfield,LA;Smith,FJ;Burn,P;Bernstein,IL;Woods,SC;Seeley,RJ

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最近,胰高血糖素样肽-1-(7-36)酰胺(GLP-1)和瘦素已被牵连在调节食物摄入。在本研究中,我们比较了瘦素(3.5微克)和GLP-1(10.0微克)的第三脑室给药(i3 vt)对大鼠下丘脑、边缘系统和后脑区域短期食物摄入和c-Fos样免疫反应性(c-FLI)的影响。相对于对照组,输注瘦素或GLP-1(熄灯前3小时)在黑暗阶段的前2小时内显著降低了食物摄入量(分别为53%和63%)。在不同的大鼠中,输注瘦素或GLP-1升高室旁下丘脑和中央杏仁核中的c-FLI。此外,瘦素选择性升高c-FLI在背内侧下丘脑,而GLP-1选择性升高c-FLI在孤束核,最后区,外侧臂旁核,下丘脑弓状核。在中枢神经系统(CNS)内的不同区域中观察到给予瘦素或GLP-1后的大多数c-FLI的事实表明瘦素和GLP-1在食物摄入和体重的CNS调节中的不同作用。
Recently, glucagon-like peptide-1-(7-36) amide (GLP-1) and leptin have been implicated in the regulation of food intake. In the present study, we compared the effects of third ventricular administration (i3vt) of leptin (3.5 micrograms) and GLP-1 (10.0 micrograms) on short-term food intake and c-Fos-like immunoreactivity (c-FLI) in hypothalamic, limbic, and hindbrain areas in the rat. Relative to controls, infusion of leptin or GLP-1 (3 h before lights off) significantly reduced food intake over the first 2 h in the dark phase (53 and 63%, respectively). In different rats, infusion of leptin or GLP-1 elevated c-FLI in the paraventricular hypothalamus and central amygdala. Furthermore, leptin selectively elevated c-FLI in the dorsomedial hypothalamus, whereas GLP-1 selectively elevated c-FLI in the nucleus of the solitary tract, area postrema, lateral parabrachial nucleus, and arcuate hypothalamic nucleus. The fact that most of the c-FLI after leptin or GLP-1 administration was observed in separate regions within the central nervous system (CNS) suggests different roles for leptin and GLP-1 in the CNS regulation of food intake and body weight.
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