电刺激通过调节微细胞BDNF来改善长期高脂肪饮食引起的认知障碍
Xingyu Yang1, Ziwei Yu1, Li An2
1Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province, China.
Brain research
|December 16, 2023
概括
电 ?? 刺激 (ES) 通过减少炎症和调节微质脑衍生神经营养因子 (BDNF) 来改善高脂肪饮食的小鼠的认知缺陷. 这种疗法通过恢复海马功能来抵消与肥胖相关的认知障碍.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 代谢障碍 代谢障碍 代谢障碍
背景情况:
- 在青少年中长期高脂肪饮食 (HFD) 消费会损害海马体功能,并增加认知障碍的风险.
- 由微质激活介导的HFD诱导的海马炎症是认知衰退的关键因素.
- 电刺激 (ES) 是一种公认的抗炎性神经刺激疗法.
研究的目的:
- 研究ES在减轻与HFD诱导的肥胖症相关的认知障碍方面的治疗潜力.
- 阐明ES作用的潜在机制,重点关注海马体中神经炎症和突触可塑性.
主要方法:
- 小鼠接受了22周的HFD治疗,其中一些接受了ES治疗.
- 用莫里斯水迷宫测试来评估认知功能.
- 分析海马组织的炎症标记物 (IL-1β,IL-1R),突触蛋白 (synaptophysin,PSD-95),亡标记物 (Caspase-3,Bcl-2),微质激活 (CD68) 和脑衍生性神经营养因子 (BDNF) 通过西部斑点和免疫光.
主要成果:
- 治疗ES显著改善了HFD小鼠的认知缺陷.
- ES降低了微质激活 (CD68) 和调节了微质BDNF水平.
- 抑制IL-1β和IL-1R增强了突触可塑性标记物 (PSD-95,突触生物素).
- 外围NLRP3炎症酶激活加剧了认知缺陷和海马炎症,诱导了微质亡.
结论:
- 通过抑制海马体炎症和调节微质BDNF,ES有效地抵消HFD诱导的认知障碍.
- ES促进海马功能重塑,为与肥胖相关的认知功能障碍提供潜在的治疗策略.
- 周围炎症细胞过度激活会通过诱导微质亡,对ES的有效性产生负面影响.
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