在创伤性脑损伤后,电通过抑制NF-κB/COX2通路来调节微质极化
Xiao-Hui Zhang1, Hai Cui1, Shu-Mei Zheng1
1School of Traditional Chinese Medicine, Capital Medical University, Beijing 100069, China.
Brain research
|August 10, 2023
概括
2/100赫兹频率的电针 (EA) 通过减少炎症和氧化应激,显著改善创伤性脑损伤 (TBI) 后的神经和认知功能. 这种治疗通过NF-κB/COX2通路促进有益的微质偏振,提供神经保护.
科学领域:
- 神经科学是一个神经科学.
- 神经学 神经学
- 针研究 针研究
背景情况:
- 创伤性脑损伤 (TBI) 涉及神经炎症和氧化应激,NF-κB/COX2通路和微质极化起着关键作用.
- 电针 (EA) 用于TBI症状管理,但最佳频率和潜在机制需要进一步调查.
- 针对微质偏向和NF-κB/COX2通路对于有效的TBI治疗至关重要.
研究的目的:
- 为了确定EA治疗TBI的最佳频率.
- 阐明EA的神经保护机制,包括NF-κB/COX2通路和TBI中的微质极化.
主要方法:
- 实验1:小鼠TBI模型 (n=42) 接受不同EA频率 (包括2/100Hz) 或手动针,评估神经功能,认知能力,氧化应激标志物和炎症性细胞因子.
- 实验2:研究了使用最佳EA频率 (2/100Hz) 和NF-κB抑制剂 (PDTC) 在TBI大鼠 (n=48) 中的机制,评估神经/认知功能,氧化应激,炎症,亡,蛋白质表达 (NF-κB,COX2,Arg-1) 和微质标记.
- 进行了组织学分析 (H&E) 和免疫光染色 (Iba-1,COX2,Arg-1).
主要成果:
- 2/100 Hz的EA显著改善了神经和认知功能,减少了氧化应激 (MDA,增加了SOD/GSH-Px),并减少了促炎细胞因子 (IL-6,IL-1β,TNF-α).
- EA (2/100 Hz) 和PDTC同样降低了NF-κB通路激活 (p-NF-κB,COX2) 和M1微质标记物的调节,同时提高了M2标记物的调节 (Arg-1,IL-10).
- 这两种治疗都有效地减少了炎症,氧化应激和亡,增强了TBI后的神经元和认知恢复.
结论:
- 2/100 Hz的EA通过抑制神经炎症,氧化应激和亡,在TBI中显示出显著的神经保护作用.
- 通过抑制NF-κB/COX2通路,EA促进了微质偏向向M2表型的转变.
- 这些发现支持EA作为TBI的潜在治疗策略,突出其最佳频率和作用机制.
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