Current Biology:研究发现环境相关的睡眠中断的潜在的神经机制

2016-03-29 sunshine MedSci原创

Current Biology:研究发现环境相关的睡眠中断的潜在的神经机制睡眠或饮食失调存在严重的健康后果。在人类中,严重睡眠不足与食欲的增加和胰岛素不敏感有关,然而长期睡眠不足的人更容易出现肥胖,代谢综合征,Ⅱ型糖尿病及心血管疾病。相反,机体的代谢状态可有效调节睡眠和昼夜节律行为;然而,睡眠代谢相互作用的分子基础目前仍知之甚少。本研究中,我们描述了一个高度保守的RNA / DNA结合蛋白tran

睡眠或饮食失调存在严重的健康后果。在人类中,严重睡眠不足与食欲的增加和胰岛素不敏感有关,然而长期睡眠不足的人更容易出现肥胖,代谢综合征,Ⅱ型糖尿病及心血管疾病。相反,机体的代谢状态可有效调节睡眠和昼夜节律行为;然而,睡眠代谢相互作用的分子基础目前仍知之甚少。

本研究中,我们描述了一个高度保守的RNA / DNA结合蛋白translin(trsn),它的识别对于饥饿诱导睡眠抑制来说是必不可少的。但是需要注意的是trsn似乎并不能调节机体的能量存储、空腹血糖水平,或机体的摄食行为,这表明trsn突变果蝇的睡眠表型并不是一般代谢功能障碍或饥饿反应迟钝的结果。虽然trsn可在所有的细胞中广泛表达,但是饥饿时果蝇大脑中的trsn转录下调了。空间限制救援或靶向敲除局部对神经元应答的trsn可产生速激肽家族的白细胞激肽。白细胞激肽神经元中神经活动的操纵揭示了饥饿诱导睡眠的抑制需要这些神经元。

总而言之,这些研究发现表明,trsn是调节机体睡眠和代谢状态的必备的整合器,其含义是理解环境扰动相关的睡眠中断潜在的神经机制。

原始出处:

Kazuma Murakami, Maria E. Yurgel, et al., translin Is Required for Metabolic Regulation of Sleep. Current Biology, March 24, 2016. DOI: http://dx.doi.org/10.1016/j.cub.2016.02.013

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    2016-09-02 sunylz
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