Nat Chem Biol:南方医科大学全新发表文章:焦虑发生新机制

2019-10-29 佚名 生物通

研究首次发现脑区间铁离子转运异常是焦虑发生的关键环节,为焦虑症发病机制的研究提供了新思路。

研究首次发现脑区间铁离子转运异常是焦虑发生的关键环节,为焦虑症发病机制的研究提供了新思路。

精神疾病严重危害人类健康,全球约有10%的人受精神疾病的困扰,造成的经济负担高达万亿美元;在我国,焦虑症是最为常见的精神疾病。

近日,来自南方医科大学基础医学院的研究人员发表了题为“Axonal iron transport in the brain modulates anxiety-related behaviors”的文章,揭示了铁离子在脑区间转运过程,并首次发现脑区间铁离子转运异常是焦虑发生的关键环节,为焦虑症发病机制的研究提供了新思路。

这一研究成果公布在10月7日的Nature Chemical Biology杂志上,文章的通讯作者为南方医科大学基础医学院朱心红教授,第一作者为王卓、曾元宁。



朱心红教授团队长期专注于精神疾病发病机制与防治研究,该工作不仅揭示了脑铁代谢新机制,并且为焦虑症发病机制的研究提供了新思路,为抗焦虑新药物研发提供了新靶点。

铁代谢参与脑内多种生物学过程,但脑铁代谢的基本过程还不清楚。

在这篇文章中,研究人员对脑内铁代谢的新机制进行了探索,证明了铁离子在各脑区之间沿神经投射进行运输,发现了两条脑内铁离子转运途径:从腹侧海马(vHip)到内侧前额叶皮层(mPFC)再到黑质(SN),以及从丘脑(Tha)到杏仁核(AMG)再到内侧前额叶皮层(mPFC)。

进一步的研究发现不同的铁离子转运途径具有不同的生理病理功能,vHip-mPFC-SN的铁离子转运途径异常是焦虑发生的关键环节,并与运动障碍相关,但Tha-AMG-mPFC的铁离子转运途径不参与焦虑样行为的调节。研究者还发现经典的抗焦虑药物(地西泮,氯化锂)治疗能够促进vHip-mPFC的铁离子转运,并且促进vHip-mPFC的铁离子转运是地西泮发挥抗焦虑效应的必要条件;促进vHip-mPFC的铁离子转运能够逆转小鼠焦虑模型动物的焦虑样行为。

原始出处:Wang Z1,2, Zeng YN1,2, Yang P1, et al. Axonal iron transport in the brain modulates anxiety-related behaviors. Nat Chem Biol. 2019 Oct 7.

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    2020-04-24 sunylz
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    2020-07-29 liye789132251
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    2019-10-29 明天jing

    焦虑是当年年轻人的共同问题,需要认真对待。

    0

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