Leptin excites basolateral amygdala principal neurons and reduces food intake by LepRb-JAK2-PI3K-dependent depression of GIRK channels.
Leptin excites basolateral amygdala principal neurons and reduces food intake by LepRb-JAK2-PI3K-dependent depression of GIRK channels.
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瘦素通过 LepRb-JAK2-PI3K 依赖的 GIRK 通道抑制来兴奋基底外侧杏仁核主要神经元并减少食物摄入。
DOI:
10.1002/jcp.31117
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发表时间:
2024
影响因子:
5.6
通讯作者:
Lei,Saobo
中科院分区:
文献类型:
--
作者:
Boyle,CodyA;Kola,PhaniK;Oraegbuna,ChidiebeleS;Lei,Saobo
Leptin is an adipocyte‐derived hormone that modulates food intake, energy balance, neuroendocrine status, thermogenesis, and cognition. Whereas a high density of leptin receptors has been detected in the basolateral amygdala (BLA) neurons, the physiological functions of leptin in the BLA have not been determined yet. We found that application of leptin excited BLA principal neurons by activation of the long form leptin receptor, LepRb. The LepRb‐elicited excitation of BLA neurons was mediated by depression of the G protein‐activated inwardly rectifying potassium (GIRK) channels. Janus Kinase 2 (JAK2) and phosphoinositide 3‐kinase (PI3K) were required for leptin‐induced excitation of BLA neurons and depression of GIRK channels. Microinjection of leptin into the BLA reduced food intake via activation of LepRb, JAK2, and PI3K. Our results may provide a cellular and molecular mechanism to explain the physiological roles of leptin in vivo.
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