Glucose-sensing glucagon-like peptide-1 receptor neurons in the dorsomedial hypothalamus regulate glucose metabolism.

Glucose-sensing glucagon-like peptide-1 receptor neurons in the dorsomedial hypothalamus regulate glucose metabolism.
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下丘脑背内侧的葡萄糖感应胰高血糖素样肽-1受体神经元调节葡萄糖代谢

DOI:
10.1126/sciadv.abn5345
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发表时间:
2022-06-10
期刊:
影响因子:
13.6
通讯作者:
--
中科院分区:
综合性期刊1区
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--
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胰高血糖素样肽-1(GLP-1)通过激活中枢神经系统中的GLP-1受体(GLP-1 R)来调节能量稳态。然而,中枢GLP-1信号控制血糖水平的机制,特别是在不同营养状态下,仍不清楚。在这里,我们定义了下丘脑背内侧核(DMH)中的葡萄糖敏感GLP-1 R神经元群体,内源性GLP-1通过下丘脑和胰腺之间的串扰降低葡萄糖水平。具体而言,我们说明了DMHGLP-1 R在葡萄糖调节中的充分性和必要性。DMHGLP-1 R神经元的激活通过延迟整流钾电流的cAMP-PKA依赖性抑制介导。我们还解剖了DMHGLP-1 R-迷走神经背侧运动核(DMV)-胰腺活动的下行控制,其可以通过增加胰岛素释放来调节葡萄糖水平。因此,我们的研究结果说明了DMH中的中枢GLP-1作用如何诱导血糖水平的营养状态依赖性降低。
Glucagon-like peptide-1 (GLP-1) regulates energy homeostasis via activation of the GLP-1 receptors (GLP-1Rs) in the central nervous system. However, the mechanism by which the central GLP-1 signal controls blood glucose levels, especially in different nutrient states, remains unclear. Here, we defined a population of glucose-sensing GLP-1R neurons in the dorsomedial hypothalamic nucleus (DMH), by which endogenous GLP-1 decreases glucose levels via the cross-talk between the hypothalamus and pancreas. Specifically, we illustrated the sufficiency and necessity of DMHGLP-1R in glucose regulation. The activation of the DMHGLP-1R neurons is mediated by a cAMP-PKA–dependent inhibition of a delayed rectifier potassium current. We also dissected a descending control of DMHGLP-1R –dorsal motor nucleus of the vagus nerve (DMV)–pancreas activity that can regulate glucose levels by increasing insulin release. Thus, our results illustrate how central GLP-1 action in the DMH can induce a nutrient state–dependent reduction in blood glucose level.
DOI: 10.1152/ajpendo.00409.2011
发表时间: 2012-02-01
影响因子: 5.1
作者:
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通讯作者: Ayala, Julio E.
DOI: 10.1523/jneurosci.2145-19.2019
发表时间: 2019-12-04
影响因子: 5.3
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下丘脑胰高血糖素样肽1受体足够,但对于调节小鼠的能量平衡和葡萄糖稳态不需要。
DOI: 10.2337/db16-1102
发表时间: 2017-02
期刊: Diabetes
影响因子: 7.7
作者:
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DOI: 10.1097/00006676-199007000-00018
发表时间: 1990-07-01
期刊: PANCREAS
影响因子: 2.9
作者:
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通讯作者: DRUCKER, DJ
DOI: 10.1016/s0306-4522(96)00434-4
发表时间: 1997-03-01
期刊: NEUROSCIENCE
影响因子: 3.3
作者:
Larsen, PJ;TangChristensen, M;Orskov, C
通讯作者: Orskov, C