Cell Metabol:想不到!天然离子硒能帮助逆转机体的记忆丧失

2022-02-17 细胞微信号 细胞微信号

本文研究结果提供了一种特殊的分子机制,其或能将运动所诱导的系统性环境改变与静止的海马体神经前体细胞的激活,以及其随后被招募到神经源轨迹中相关联起来。

尽管运动对神经发生的增强作用已经被广泛研究了,但这种反应背后的分子机制研究人员并不清楚。近日,一篇发表在国际杂志Cell Metabolism上题为“Selenium mediates exercise-induced adult neurogenesis and reverses learning deficits induced by hippocampal injury and aging”的研究报告中,来自昆士兰大学等机构的科学家们通过研究发现,一种存在于很多食物中的矿物质硒或能逆转中风对机体认知能力的影响,并能增强衰老大脑的学习和记忆能力。

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图片来源:Pixabay/CC0 Public Domain

文章中,研究人员通过分析锻炼对衰老大脑的影响,结果发现,一种对转运血液中硒非常关键的蛋白质的水平或能通过体育锻炼而升高;在过去20年里,科学家们已经知道,锻炼或能在大脑中产生新的神经元,但他们并不知道其中的分子机理;为此科学家们调查了是否膳食硒补充或能复制运动所产生的效果,他们发现,硒补充剂或能增加老年小鼠机体神经元的产生并改善其机体的认知功能。

新生神经元的产生水平在老年小鼠机体中会快速减少,就好像在人类中一样;当给与小鼠硒补充剂时,其机体中神经元的产生水平就会增加,从而就能逆转在衰老小鼠机体中观察到的认知缺陷。硒是一种从土壤和水中吸收的必要微量矿物质,其存在于诸如谷物、肉类和坚果等食物中,其在巴西坚果中的含量最高。科学家们还分析了当机体中风后硒是否会对机体认知功能的下降产生一定的影响,这或许会影响机体的记忆和学习的能力。研究者Walker博士说道,年轻小鼠往往在学习和记忆任务中表现地较好,但在中风之后,其就不能再执行这些任务了,当给与小鼠硒补充剂后,因中风导致的学习好记忆缺陷影响的小鼠就会恢复到正常的状态。

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相关研究结果或有望帮助科学家们开发新型治疗性策略来增强因健康状况不良或年长而无法锻炼的人群的大脑认知功能;然而,硒补充剂或许并不能被看作完全能代替运动,而且过多硒补充剂的摄入或许对机体健康有害;一个获得水果、坚果、蔬菜和肉类均衡饮食的人往往有着良好的硒水平;但在老年人机体中,尤其是患有神经性疾病的患者群体中,补充硒或许是有益的。

综上,本文研究结果提供了一种特殊的分子机制,其或能将运动所诱导的系统性环境改变与静止的海马体神经前体细胞的激活,以及其随后被招募到神经源轨迹中相关联起来。

原始出处:

Odette LeiterZhan ZhuoRuslan Rust,et al. Selenium mediates exercise-induced adult neurogenesis and reverses learning deficits induced by hippocampal injury and aging, Cell Metabolism (2022). DOI:10.1016/j.cmet.2022.01.005

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    2022-10-14 一闲
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    2022-05-27 维他命
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    2022-12-23 guojianrong
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    2022-03-10 医者仁者

    #硒#有益#记忆#,还能对抗#癌症#

    0

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    2022-02-19 闆锋旦
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    2022-02-17 ms1000002136354097

    硒能帮助逆转记忆丧失

    0

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