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TUDCA通过调节微生物群-肠-大脑轴来改善APP/PS1小鼠的认知障碍
Minxia Zhan1, Hui Chen2, Xunzhong Fu3
1Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400045, China.
Current issues in molecular biology
|January 30, 2026
概括
陶氏氧化醇酸 (TUDCA) 通过减少炎症和β-粉样蛋白减少阿尔茨海默病 (AD) 模型的认知能力. TUDCA通过肠道微生物群调节和直接效应对AD小鼠有好处,突出其治疗潜力.
科学领域:
- 神经科学是一个神经科学.
- 胃肠病学 胃肠病学
- 免疫学 免疫学 免疫学
背景情况:
- 阿尔茨海默病 (AD) 是一种带有认知衰退的神经退行性疾病.
- 胆汁酸Tauroursodeoxycholic acid (TUDCA) 在AD模型中显示了提高认知能力的潜力.
- 在阿尔茨海默病中TUDCA的影响的确切机制在很大程度上仍未被探索.
研究的目的:
- 在APP/PS1 AD小鼠模型中研究TUDCA对认知功能的治疗作用.
- 阐明潜在的机制,包括微生物群-肠-大脑轴和炎症途径.
主要方法:
- 在APP/PS1小鼠中进行行为评估,粉样β沉积分析和神经炎症评估.
- 分析周围炎症,肠道屏障完整性和肠道微生物群组成.
- 便微生物群移植 (FMT) 和伪无菌小鼠实验,以评估微生物群依赖和独立的影响.
- 对TLR4/NF-κB/NLRP3信号通路的检查.
主要成果:
- 在AD小鼠中,TUDCA显著改善了认知障碍,并减少了粉样β积累.
- TUDCA抑制了神经炎症和外周炎症反应.
- TUDCA增强了肠道屏障功能和调节了肠道微生物群组成.
- FMT证实了TUDCA改变的微生物群在认知效益中的作用;伪无菌实验显示微生物群独立的影响.
- 图德卡抑制了TLR4/NF-κB/NLRP3炎症途径.
结论:
- TUDCA通过双重机制改善了AD模型中的认知缺陷.
- 这些机制涉及微生物群-肠-大脑轴和直接的微生物群独立路径的调节.
- TUDCA显示出作为阿尔茨海默病治疗剂的显著潜力.
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