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Yin Cui¹, Zhiying Zheng², Qingyun Zhou³

¹School of Public Health, Nanjing Medical University, Nanjing 211166, China; Department of Anesthesiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210008, China.

Experimental neurology

|January 9, 2025

概括

手术后认知功能障碍 (POCD) 与昼夜节律障碍有关. 这项研究揭示了干扰DRP1活动会损害线粒体功能并导致认知缺陷,这种缺陷可以通过抑制DRP1来缓解.

科学领域:

神经科学是一个神经科学.
麻醉学麻醉学
线粒体生物学线粒体生物学

背景情况:

手术后认知功能障碍 (POCD) 是麻醉和手术后的常见并发症.
循环节律障碍与POCD有关,但根本机制尚未完全理解.
由DRP1调节的线粒体动力学由昼夜时钟协调,这表明与POCD的潜在联系.

研究的目的:

研究DRP1介导的线粒体动态在POCD发展中的作用.
探索昼夜节律扰乱如何影响DRP1活动和线粒体功能在麻醉的背景下.
为了确定是否针对DRP1可以减轻麻醉诱导的认知缺陷.

主要方法:

小鼠被暴露在异氨酸麻醉中以诱导POCD,通过Y迷宫和恐惧调节评估认知功能.
在海马组织中分析了DRP1活性,线粒体形态,ATP生产和ROS水平.
监测循环节律,并评估DRP1抑制剂 (Mdivi-1) 的作用.

主要成果:

异氨酸麻醉破坏了海马体DRP1活动的昼夜调节.
这种干扰导致线粒体功能受损,形态变化,昼夜节律受损和认知缺陷.
Mdivi-1治疗恢复了线粒体功能和昼夜节律,缓解了认知障碍.

结论:

hippocampus 中 DRP1 活动的循环调节对于维护线粒体能量代谢至关重要.
这种途径的破坏对POCD的发病有显著的贡献.
准DRP1可能是预防或治疗POCD的治疗策略.

关键词:

循环节律是循环节律的节奏.DRP1 DRP1 的使用方法异花化物 (Isoflurane) 是一种线粒体中的线粒体.这是POCD的POCD.

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