丰富的环境通过Sirt1/PGC-1α通路改善线粒体功能,改善老年小鼠的孕产妇睡眠剥夺引起的认知障碍
Ru-Meng Wei1, Yue-Ming Zhang1, Kai-Xuan Zhang1
1Department of Neurology (Sleep Disorders), The Affiliated Chaohu Hospital of Anhui Medical University, Hefei 238001, Anhui, China.
Aging
|January 17, 2024
概括
环境丰富 (EE) 改善了暴露于母亲睡眠剥夺 (MSD) 的老年后代的认知功能. 通过Sirt1/PGC-1α通路恢复突触蛋白质,EE减轻神经炎症和氧化应激.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 发展心理学 发展心理学
背景情况:
- 早期的生活压力,如母亲的睡眠不足 (MSD),可以导致老年后代的认知障碍.
- 环境丰富 (EE) 是一种有前途的非药物干预方法,用于治疗认知衰退.
研究的目的:
- 调查EE在改善暴露于MSD的老后代认知缺陷方面的疗效.
- 在本模型中阐明受EE影响的潜在分子机制,包括氧化应激和神经炎症.
主要方法:
- 母性CD-1小鼠在孕期晚期受到睡眠剥夺.
- 后代被安置在标准或EE条件下,并在18个月后使用莫里斯水迷宫评估认知功能.
- 分析了海马和前额叶皮层组织的突触可塑性,炎症和氧化应激的分子标志物.
主要成果:
- 与对照人群相比,MSD后代表现出显著的学习和记忆缺陷.
- 脊髓炎导致突触蛋白 (Sirtuin1,PGC-1α,PSD-95,synaptophysin) 的水平降低,并增加了促炎细胞因子.
- 暴露于EE可以逆转这些有害变化,改善认知功能和分子形状.
结论:
- 环境丰富有效地减轻MSD引起的认知障碍,氧化应激和老年后代的神经炎症.
- EE使突触蛋白水平正常化,并与神经炎症作斗争,可能通过Sirt1/PGC-1α信号通路.
- 这些发现强调了EE对早期生活压力导致的认知功能障碍的治疗潜力.
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