在轻度认知障碍中肠道微生物组的改变:来自ALBION希腊队列的发现
Konstantinos Rouskas1, Eirini Mamalaki2, Eva Ntanasi2
1Institute of Applied Biosciences, Centre for Research & Technology Hellas, 57001 Thessaloniki, Greece.
Microorganisms
|September 27, 2025
概括
肠道微生物组的改变与欧洲人口的轻度认知障碍 (MCI) 有关. 特定的细菌系,特别是那些参与短链脂肪酸生产的细菌系,与MCI有关,表明潜在的诊断生物标志物.
科学领域:
- 微生物组研究的研究.
- 神经科学是一个神经科学.
- 胃肠病学 胃肠病学
背景情况:
- 肠道失调症越来越多地与神经退行性疾病 (如阿尔茨海默氏症) 有关.
- 肠道微生物组在阿尔茨海默病早期阶段,特别是轻度认知障碍 (MCI) 中的作用尚未得到充分研究,特别是在欧洲人群中.
研究的目的:
- 在欧洲队列中调查与MCI相关的新型肠道微生物组特征.
- 为了解决有关肠道微生物群在预发性AD阶段的研究缺口.
主要方法:
- 一项涉及99人 (49人认知正常,50人患有MCI) 的横截面研究,使用16S rRNA测序.
- 使用MaAsLin2和弹性净物流回归的差异丰度分析.
- 用AUC评估微生物群对MCI的区分能力.
主要成果:
- 在认知正常和MCI组之间,α和β多样性没有显著差异.
- 特定的属,包括*Candidatus_Soleaferrea*和*Sellimonas*,在MCI患者中差异丰富,与短链脂肪酸 (SCFA) 生产有关.
- 肠道微生物群表现出良好的MCI辨别能力 (AUC = 0.77),其中*Rothia*被确定为关键预测因子.
结论:
- 肠道微生物组的改变与欧洲人口的MCI有关.
- 新型微生物组特征,特别是产生SCFA的细菌,与MCI有关.
- 需要进行更大的纵向研究来证实这些发现,并探索潜在的生物机制.
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