Elife:激活胆碱能系统还能促进睡眠

2016-02-19 崔雪芹 中国科学报

并非

并非所有人都能拥有良好的睡眠,睡眠障碍让很多人深受其害。浙江大学神经科学研究所教授李晓明实验室的最新研究发现:激活投射到丘脑网状核的胆碱能神经元纤维,能有效激活丘脑网状核,从而促进睡眠。这为人类理解睡眠机制、治疗失眠提供了新的思路。相关论文于2月12日发表在eLife期刊。

这项发现挑战了传统观点,人们之前一直认为激活胆碱能系统只与觉醒有关。

据介绍,研究人员重点研究了投射到丘脑网状核的这部分胆碱能神经元的神经末梢。他们通过光遗传学手段,特异性激活投射到丘脑网状核的胆碱能神经元末梢,结果发现这部分胆碱能神经元末梢有效激活了丘脑网状核的细胞,从而让小鼠很快进入睡眠状态。

丘脑网状核在大脑中扮演“聚光灯”的角色,它的工作模式类似于一组抑制性的“闸门”,激活它,相应的脑功能会受到抑制。当你专注地想问题时,或许就听不见耳边的音乐,这也许就和丘脑网状核的选择有关。激活投射到丘脑网状核的胆碱能神经元,能有效激活丘脑网状核,打开抑制性的“闸门”,从而促进睡眠。

美国科学院院士、艺术与科学院院士、美国生物节律学会主席、西南医学中心神经科学系主任Joseph Takahashi教授是这篇文章的审稿人,他认为这一研究结果意义重大,相关发现也非常新颖而有意义。

原始出处:

Ni KM, Hou XJ, Yang CH, Dong P, Li Y, Zhang Y, Jiang P, Berg DK, Duan S, Li XM.Selectively driving cholinergic fibers optically in the thalamic reticular nucleus promotes sleep.Elife. 2016 Feb 11;5. 


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    2016-10-16 膀胱癌
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    2016-07-23 clmlylxy
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    2016-02-21 大嘴巴小牙齿

    这样做肯定有人会寻麻疹

    0

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    2016-02-21 grace5704

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