肠道微生物群组成与认知脆弱之间的相关性:在社区居住的老年人中进行的病例对照研究
Nana Wen1, Yu Zhang1, Liwei Sun1
1College of Nursing and Health Management, Shanghai University of Medicine and Health Sciences, Shanghai, China.
Frontiers in nutrition
|January 28, 2026
概括
老年人的认知虚弱 (CF) 与明显的肠道微生物变化有关. 特定的细菌与CF相关,影响身体和认知功能,这表明肠道微生物组在CF病变发生过程中发挥了作用.
科学领域:
- 老年学是一门学科.
- 微生物学 微生物学
- 神经科学是一个神经科学.
背景情况:
- 在老年人中观察到肠道微生物群的变化,这些人有轻微的认知障碍或身体虚弱.
- 肠道微生物群和认知虚弱 (CF) 之间的关系,定义为身体虚弱和轻度认知障碍在没有痴呆症的情况下的共存,仍然不清楚.
研究的目的:
- 调查与认知虚弱 (CF) 相关的肠道微生物组成.
- 为了比较社区居住的老年人与没有CF之间的微生物差异.
主要方法:
- 一项病例控制研究涉及35名患有CF的老年人和35名没有CF的老年人.
- 16S rDNA基因测序便样本以分析肠道微生物组成.
- 评估微生物种群的差异以及与认知和身体功能的相关性.
主要成果:
- 在CF和非CF组之间发现了β-多样性的显著差异.
- 像Verrucomicrobia和Tenericutes这样的特定种类在CF个体中更为丰富,而Roseburia和Haemophilus在非CF个体中更为丰富.
- 改变的肠道微生物群高精度区分了CF和非CF的老年人 (AUC=92%),某些微生物与CF患者的身体和认知表现负相关.
结论:
- 改变的肠道微生物群在社区居住的老年人认知虚弱 (CF) 的病原发生中发挥着作用.
- 需要进行更多的纵向研究,采用更大的样本大小来确定因果关系.
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