运动对肠道微生物群-线粒体轴和老化小鼠认知功能的年龄相关影响
Sang-Seo Park1, Hye-Sang Park1, Ga-Ram Choi2
1Department of Physiology, College of Medicine, Kyung Hee University, Seoul, Korea.
Journal of exercise rehabilitation
|January 7, 2026
概括
跑步机运动有利于肠道微生物群-线粒体-大脑轴,改善老年小鼠的认知功能和线粒体健康. 早期运动启动显示出更大的神经保护作用,增强认知性和延迟与年龄相关的衰退.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 微生物学 微生物学
背景情况:
- 衰老会损害线粒体功能,细胞亡调节和肠道微生物群,导致认知能力下降.
- 肠道微生物群-线粒体-神经元可塑性轴对认知健康至关重要.
- 了解这个轴上的与年龄相关的变化对于开发干预措施至关重要.
研究的目的:
- 研究跑步机运动对肠道微生物群-线粒体-神经元可塑性轴的年龄相关影响.
- 为了比较运动在年轻 (15个月) 和老 (28个月) 老鼠中的有效性.
- 为了确定早期开始运动是否能提供更大的神经保护.
主要方法:
- 在男性C57BL/6小鼠的8周跑步机训练方案中,跨越早期和晚期的久坐/运动组.
- 通过被动回避和莫里斯水迷宫测试来评估认知功能.
- 分析海马线粒体呼吸,Ca2+保留,亡标志物 (Bax/Bcl-2) 和肠道微生物群组成 (16S rRNA测序).
主要成果:
- 久坐不动的老老鼠表现出记忆障碍,线粒体功能下降,亡改变,以及有益的肠道细菌 (乳杆菌,双菌,阿克尔曼西亚) 的减少.
- 运动显著改善了老年小鼠的认知表现,线粒体功能,亡平衡和肠道微生物群组成.
- 与早期老鼠相比,晚年老鼠的运动效应更为明显,这表明反应能力更强.
结论:
- 运动对调节肠道微生物群-线粒体-大脑轴的有效性取决于年龄.
- 在衰老期间早期开始运动可以最大限度地改善线粒体完整性,微生物群组成和认知性.
- 早期运动代表了延迟与年龄相关的认知衰退和功能障碍的关键窗口.
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