线粒体调制治疗手术后认知功能障碍通过Mdivi1通过DRP1抑制的神经保护
Jun Ying1,2, Xiaobing Deng3, Ruini Du1
1Department of Anesthesiology & Center for Brain Science, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
Scientific reports
|October 31, 2024
概括
使用Mdivi-1抑制胺相关蛋白1 (DRP1),通过稳定线粒体,减少神经炎症并通过稳定术后认知功能障碍 (POCD) 模型改善认知功能. 这表明DRP1抑制是POCD的有前途的治疗策略.
科学领域:
- 神经科学是一个神经科学.
- 线粒体生物学 线粒体生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 手术后认知障碍 (POCD) 是一个常见的并发症.
- 线粒体动力学在神经元功能和生存中起着至关重要的作用.
- 线粒体动态的调节失调与POCD病变发生有关.
研究的目的:
- 调查线粒体动态在POCD中的作用.
- 在POCD模型中使用Mdivi-1评估动氨相关蛋白1 (DRP1) 抑制的治疗潜力.
- 阐明Mdivi-1对神经炎症和突触可塑性的影响背后的机制.
主要方法:
- 使用POCD的动物模型.
- 给药Mdivi-1,一个DRP1抑制剂.
- 在微质细胞中评估神经炎症标志物 (NLRP3/IL-1β).
- 测量了线粒体裂变/融合,反应性氧物种 (ROS) 生产和线粒体膜潜力.
- 通过测量海马体中的突触脊柱密度来评估突触可塑性.
- 使用Y迷宫测试评估认知表现.
主要成果:
- 用Mdivi-1抑制DRP1显著降低了微质细胞介导的神经炎症.
- Mdivi-1治疗减少了线粒体裂变,减少了ROS产量,并稳定了线粒体膜潜力.
- 在接受Mdivi-1治疗的小鼠中,微质细胞中的NLRP3/IL-1β表达显著降低.
- Mdivi-1增强了突触可塑性,这是海马体突触脊柱密度增加所证明的.
- 在POCD模型中,Mdivi-1治疗改善了认知表现.
结论:
- 线粒体动力学在POCD的病理生理学中起着至关重要的作用.
- DRP1的抑制是缓解POCD的可行的治疗策略.
- Mdivi-1通过减少神经炎症,改善线粒体功能和增强突触完整性来改善POCD.
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