生物标志物 生物标志物
Rohit Shukla1, Vivek Kumar2, Dhananjay Yadav3
1University of South Florida, Tampa, FL, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
口腔微生物组的变化与认知能力下降有关. 像Porphyromonas和Neisseria这样的特定细菌在轻度认知障碍和痴呆症患者中增加了丰富度,这表明阿尔茨海默病的潜在生物标志物.
科学领域:
- 微生物组研究的研究.
- 神经科学是一个神经科学.
- 老年学是一门学科.
背景情况:
- 越来越多的证据将肠道微生物组与阿尔茨海默病 (AD) 和痴呆症联系起来.
- 口腔微生物组与认知障碍之间的关联不太清楚.
- 这项研究侧重于口腔微生物组在老年人认知能力下降中的作用.
研究的目的:
- 与认知状态相关的口腔微生物组合的特征.
- 调查口腔微生物概况与认知能力下降之间的关联.
- 为了确定潜在的口腔微生物生物标志物用于认知障碍.
主要方法:
- 全基因组元基因组测序368个样本从老化肠道和大脑 (MiaGB) 财团的微生物组.
- 分析包括对照组,轻度认知障碍 (MCI) 和痴呆症组.
- 使用KneadData,MetaPhlAn和HUMAnNnn工具处理的数据.
主要成果:
- 从对照对痴呆症观察到的Porphyromonas,Neisseria subflava,Neisseria sicca和Streptococcus australis的丰富性增加.从对照对痴呆症观察到的多样性增加.
- 在MCI和痴呆症组中,N. subflava,Veillonella parvula,N. sicca和Neisseria flavescens显著增加.
- 与对照和痴呆症相比,Lautropia mirabilis,Eubacterium sulci和Gemella sanguinis在MCI组中得到了丰富的研究结果.
结论:
- 口腔微生物组变化与认知障碍之间存在着强烈的联系.
- 显著的微生物特征可以作为认知衰退的早期生物标志物.
- 研究结果为阿尔茨海默病预防和干预的潜在治疗策略提供了见解.
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