绿茶减轻颗粒物 (PM) 2.5-通过调节肠道微环境和荷尔蒙变化,通过调节肠道脑轴功能障碍
Jong Min Kim1,2, Hyo Lim Lee1, Min Ji Go1
1Division of Applied Life Science (BK21), Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea.
Journal of microbiology and biotechnology
|November 21, 2024
概括
绿茶提取物 (EM) 通过恢复肠道健康,保护大脑免受空气污染的损害. 它改善了肠道微生物群,减少了炎症,并预防了由颗粒物 (PM2.5) 暴露引起的脑损伤.
科学领域:
- 环境健康 环境健康
- 神经科学是一个神经科学.
- 胃肠病学 胃肠病学
背景情况:
- 长期暴露于颗粒物 (PM2.5) 破坏了肠-大脑轴 (GBA),导致神经损伤.
- 肠道失衡和炎症是将PM2.5暴露与大脑功能障碍联系起来的关键机制.
研究的目的:
- 为了研究绿茶水性抹茶提取物 (EM) 对小鼠PM2.5诱导的GBA功能障碍的保护作用.
- 阐明EM调节肠道微生物群,炎症和大脑健康的机制.
主要方法:
- BALB/c小鼠暴露于慢性PM2.5,其中一些接受EM治疗.
- 评估肠道健康指标 (结肠长度,短链脂肪酸),氧化应激,炎症 (MPO,细胞因子),肠道微生物群组成,肠道屏障功能 (TJ蛋白) 和大脑组织标记.
- 分析了托芬代谢,荷尔蒙变化和大脑脂质代谢产物.
主要成果:
- EM改善了PM2.5诱导的肠道炎症,改善了结肠长度,并恢复了短链脂肪酸水平.
- 肠道微生物群受EM调节,包括有益的属,如*Bacteroides*和正常的托代谢和激素水平.
- 保护EM免受PM2.5诱导的神经炎症,亡,突触损伤和改变的大脑脂质配置,在COX-2和ACHE等标记物中进行了具体的改善.
结论:
- 通过饮食摄入EM表明对PM2.5诱导的GBA功能障碍有显著的调节作用.
- 脑电阻的保护机制包括调节肠道微生物群,激素平衡,减少肠道和大脑的炎症和氧化应激.
- 绿茶提取物显示出作为减轻空气污染有害神经效应的饮食干预的潜力.
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