针对早期tau病理:益生菌饮食增强了认知功能,并减少了在临床前阿尔茨海默氏症模型中的炎症
Cassandra M Flynn1, Tamunotonye Omoluabi1, Alyssa M Janes1,2
1Biomedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, A1B 3V6, Canada.
Alzheimer's research & therapy
|January 18, 2025
概括
益生菌可能有助于预防阿尔茨海默氏症 (AD) 通过准早期tau病理和改善肠道健康. 这项研究表明,益生菌可以增强认知功能,并在临床前AD大鼠模型中减少神经炎症.
科学领域:
- 神经科学是一个神经科学.
- 胃肠病学 胃肠病学
- 药理学 药理学是指药理学的学科.
背景情况:
- 阿尔茨海默病 (AD) 缺乏治愈方法,但其早期阶段为干预提供了机会.
- 前角形病理学是早期AD病变发生的关键因素.
- 肠-大脑轴越来越多地与阿尔茨海默病有关,提供了一个潜在的治疗点.
研究的目的:
- 在临床前AD大鼠模型中研究益生菌对预角病理的作用.
- 探索益生菌对认知功能,神经炎症和肠-大脑轴在早期AD背景下的影响.
主要方法:
- 给大鼠注射了一种携带伪化人类陶氏体 (htauE14) 的病毒或对照病毒.
- 他们接受了益生菌或对照饮食,随后进行了行为评估.
- 分析包括肠道微生物组测序,脑炎症标志物,血脑屏障完整性和GSK-3β激活.
主要成果:
- 带有伪酸化的老鼠表现出认知缺陷.
- 益生菌补充剂增加了肠道微生物群的多样性并改善了细菌组成.
- 益生菌增强了空间学习,减少了神经炎症,并抑制了GSK-3β激活,特别是在雌性大鼠中.
结论:
- 益生菌在调节肠-大脑轴方面显示出潜力,以减轻临床前AD的前形病理.
- 益生菌补充剂代表了对AD的有希望的早期干预策略.
- 肠道健康在神经退行症中发挥着关键作用,可能是AD预防和治疗的目标.
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