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首页> 外文期刊>Neuron >Serotonin reciprocally regulates melanocortin neurons to modulate food intake.
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Serotonin reciprocally regulates melanocortin neurons to modulate food intake.

机译:血清素可相互调节黑皮质素神经元,从而调节食物摄入量。

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摘要

The neural pathways through which central serotonergic systems regulate food intake and body weight remain to be fully elucidated. We report that serotonin, via action at serotonin1B receptors (5-HT1BRs), modulates the endogenous release of both agonists and antagonists of the melanocortin receptors, which are a core component of the central circuitry controlling body weight homeostasis. We also show that serotonin-induced hypophagia requires downstream activation of melanocortin 4, but not melanocortin 3, receptors. These results identify a primary mechanism underlying the serotonergic regulation of energy balance and provide an example of a centrally derived signal that reciprocally regulates melanocortin receptor agonists and antagonists in a similar manner to peripheral adiposity signals.
机译:中央血清素能系统调节食物摄入和体重的神经途径仍有待充分阐明。我们报告5-羟色胺,通过对serotonin1B受体(5-HT1BRs)的作用,调节激动剂和黑皮质素受体拮抗剂的内源性释放,这是控制体重稳态的中央电路的核心组成部分。我们还显示,5-羟色胺诱导的吞咽需要下游激活黑色素皮质激素4,而不是黑色素皮质激素3受体。这些结果确定了能量平衡的血清素能调节的主要机制,并提供了以与周围肥胖信号类似的方式相互调节黑皮质素受体激动剂和拮抗剂的中央来源信号的实例。

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