微生物组功能基因通路预测阿尔茨海默病老年人的认知表现
Abigail L Zeamer1,2, Yushuan Lai1,2, Victoria Sanborn3
1Department of Microbiology, University of Massachusetts Chan Medical School, Worcester, MA, USA.
bioRxiv : the preprint server for biology
|March 31, 2025
概括
肠道微生物组组成与阿尔茨海默病 (AD) 的认知衰退有关. 特定的微生物通路,如尿素循环,可能预测认知表现较差,为AD进展提供了洞察力.
科学领域:
- 微生物学 微生物学
- 神经科学是一个神经科学.
- 老年学是一门学科.
背景情况:
- 肠道微生物组的干扰越来越多地与神经退行性疾病 (如阿尔茨海默氏症) 相关.
- 肠道微生物群可能通过微生物群-肠道-大脑轴影响AD病理,可能导致神经炎症.
- 了解阿尔茨海默氏症认知能力下降的驱动因素至关重要,并且仍未得到充分研究.
研究的目的:
- 调查肠道微生物组组成与老年人认知状态之间的相关性.
- 为了确定特定的微生物物种和代谢途径,与认知衰退或AD的保存相关.
- 探索肠道微生物在预测AD认知表现中的作用.
主要方法:
- 招募了260名社区老年人 (60岁以上) 的队列.
- 随着时间的推移,追踪认知措施,临床信息和肠道微生物群.
- 使用血清生物标志物和认知表现,将参与者分类为健康对照,轻度认知障碍 (MCI) 或阿尔茨海默病 (AD).
主要成果:
- 大基因组测序揭示了肠道微生物群物种丰度和认知状态 (MCI/AD) 之间的相关性.
- 微生物基因通路分析表明特定通路与认知衰退或维持之间的关联.
- 参与尿素循环和生产甲氨酸/半氨酸的基因与较差的认知表现有关.
结论:
- 肠道微生物组组成显示出作为阿尔茨海默病认知表现的预测因素的潜力.
- 特定的微生物代谢途径可能在与AD相关的认知衰退的进展中发挥作用.
- 需要进一步研究肠道微生物组在阿尔茨海默氏病变发生过程中的作用.
关键词:
在ADAS-Cog中使用了ADAS-Cog.阿尔茨海默氏症是阿尔茨海默氏症的疾病.临床痴呆症评分 (CDR) 规模认知 认知是一种认知.半氨酸 (cysteine) 是一种氨酸.甲氨酸 (Methionine) 是一种氨酸.微生物组是一个微生物组.轻度认知障碍 轻度认知障碍美国国立卫生研究院工具箱尿素循环的尿素周期更多相关视频
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