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轮班工作时间表改变了免疫细胞的调节,加快了衰老期间的认知障碍
Karienn A de Souza1,2, Morgan Jackson3, Justin Chen3
1Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M Health Science Center, Bryan, TX, 77807-3260, USA. karienn@tamu.edu.
从早班工作中扰乱的昼夜节律加速了老年小鼠的认知衰退. 这与免疫细胞激活和大脑微质细胞的变化有关,影响学习和记忆.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 时间生物学 时间生物学
背景情况:
- 循环节律障碍在与年龄相关的认知缺陷之前.
- 改变计时可能会在衰老过程中导致认知能力下降.
- 免疫激活在这种联系中的作用尚不清楚.
研究的目的:
- 调查昼夜节律失调如何影响认知功能.
- 检查免疫细胞激活和炎症在这个过程中的作用.
- 分析老化大脑中对微质细胞的影响.
主要方法:
- 暴露于转移的光暗周期或固定周期的小鼠.
- 使用巴恩斯迷宫测试评估认知表现.
- 通过流细胞计和免疫组织化学分析免疫细胞群和微质细胞.
主要成果:
- 转移的光暗周期扰乱了昼夜活动,影响了认知表现.
- 观察到骨B细胞的显著扩张和免疫细胞简介的改变.
- 海马体中微质细胞增加与认知障碍相关.
- B细胞扩张与巴恩斯迷宫表现负相关.
结论:
- 早期的昼夜节律失调加速了老化中的认知衰退.
- 这种下降与免疫细胞的改变和神经炎症有关.
- 失调的计时和免疫失调是与年龄相关的认知障碍的关键因素.
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