J NEUROL SCI:研究揭示焦虑与睡眠之间的联系!

2017-07-03 佚名 medicalxpress

当你焦虑,紧张或太激动时,你可能经历了不眠之夜。这种情绪众所周知会影响觉醒,甚至可能导致失眠,尽管我们大脑中的潜在机制仍不清楚。日本睡眠研究所的科学家发现神经元在连接情绪和睡眠中发挥关键作用,揭示了未来发现的焦虑障碍和/或睡眠障碍药物靶点。适应新环境或期待奖励——这些紧张或情绪突出的情况需要动物将其行为转移到警惕状态,通过调节自主神经和内分泌功能改变其生理条件。


当你焦虑,紧张或太激动时,你可能经历了不眠之夜。这种情绪众所周知会影响觉醒,甚至可能导致失眠,尽管我们大脑中的潜在机制仍不清楚。日本睡眠研究所的科学家发现神经元在连接情绪和睡眠中发挥关键作用,揭示了未来发现的焦虑障碍和/或睡眠障碍药物靶点。适应新环境或期待奖励——这些紧张或情绪突出的情况需要动物将其行为转移到警惕状态,通过调节自主神经和内分泌功能改变其生理条件。

条纹终端(BNST)的床核是扩展的杏仁核的一部分,通常被认为是压力反应,恐惧和焦虑的关键参与者。通过对各种脑区的预测,包括自主神经系统,下丘脑区域和杏仁核的中枢核的继发核,BNST控制内分泌和自主反应,以应对情绪突出的刺激,以及焦虑和恐惧的行为表现。

由Tsukuba大学国际综合睡眠医学研究所(WPI-IIIS)副主任Takeshi Sakurai领导的一组研究人员发现,在非快速动眼(NREM)期间,BNST中的GABA能神经元的急性光发生激发睡眠小鼠导致立即过渡到觉醒状态,而没有食欲素的功能,非常重要的神经肽用于维持觉醒。值得注意的是,在REM睡眠期间相同神经元的刺激对睡眠/觉醒状态没有任何影响。

通过化学发光法延长BNST中GABA能神经元的激发,引起持续的持续觉醒状态,并且通过事先施用双重食欲素受体阻断剂(拮抗剂)DORA 22来消除,这意味着食欲素参与这种现象。

“我们的研究揭示了BNST GABAergic系统在睡眠/觉醒控制中的作用,特别是将动物的行为状态从NREM睡眠转变为觉醒,还为失眠的病理生理学和食欲素在觉醒调节中的作用提供了重要的见解,这将有望成为为睡眠障碍开发补救措施的第一步。”樱井说。

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    2017-08-29 yinhl1978
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    2017-07-05 龙胆草

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    2017-07-04 lyh994

    深入研究机制机理

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    2017-07-04 doctorJiangchao

    继续学习。

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    2017-07-04 ann y

    研究揭示焦虑与睡眠之间的联系!

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Cancer:焦虑抑郁真的会导致癌症死亡率增加

根据最近的一项研究结果,严重的情绪低落,特别是焦虑和抑郁,可能与某些癌症的死亡率增加紧密相关。尽管这是一项观察性研究,研究人员认为它为情绪不佳导致癌症的某些不良后果这一猜想,提供了更多有利的证据。他们列举了先前的一项实验研究的证据,说明了焦虑抑郁和心血管疾病发病率升高之间的联系。

Allergy:特应性皮炎与焦虑、抑郁和自杀意念有关,但与住院或自杀无关!

由此可见,在AD患者中,抑郁、焦虑和自杀意念较为常见,但不导致精神病咨询、住院或自杀增加。