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调节后的急性力量练习促进了通过海马体N-甲基-D-酸盐受体巩固情境恐惧记忆

Ana Karla Oliveira Leite¹, Clarissa Penha Farias¹, Bianca Estefani Schmidt¹

¹Postgraduate Program in Translational Neuroscience, PGNET, National Institute of Translational Neuroscience, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil.

|November 4, 2023

概括

力量炼通过激活NMDA受体来增强记忆巩固,从而导致大脑衍生神经营养因子 (BDNF) 和突触素I水平的增加. 这一发现突出了通过抵抗训练改善认知能力的新途径.

科学领域:

神经科学是一个神经科学.
运动生理学运动生理学
认知科学认知科学

背景情况:

有氧运动有益于记忆力,但力量训练对记忆巩固的影响仍未得到充分研究.
运动释放刺激大脑的代谢物和肌,通过NMDA受体通路影响认知和突触可塑性.

研究的目的:

为了确定急性力量炼是否巩固了虚弱的记忆.
研究NMDA受体激活在强力运动诱导的记忆巩固中的作用.
为了检查NMDA受体激活在力量炼后对BDNF和Synapsin I水平的影响.

主要方法:

雄性Wistar大鼠在弱背景恐惧调节后进行了力量炼,以评估记忆巩固.
使用MK801 (一种NMDA受体对抗剂) 或运动后的盐水输液来测试NMDA受体的参与.
生物化学分析评估了海马BDNF和synapsin I水平,有或没有MK801输液.

主要成果:

力量炼成功地巩固了虚弱的记忆力,这种效果取决于NMDA受体激活.
运动诱导的海马体BDNF和突触素I的过度表达依赖于NMDA受体信号传递.
输注MK801阻断了强力运动引起的记忆巩固和分子变化.

结论:

急性力量运动通过依赖NMDA受体的途径加强恐惧记忆的巩固.
力量训练通过NMDA受体激活来调节海马体BDNF和突触素I的表达.
这项研究揭示了一种分子机制,将抵抗运动与增强的认知功能联系起来.

关键词:

整合过程是整合过程.恐惧记忆恐惧记忆在海马体内,海马体力量训练力量训练力量训练力量训练

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