年龄和衰老过程改变了肠道微生物
Qu Zhanbo1,2,3, Zhuang Jing1,2,3, Han Shugao4
1Fifth School of Clinical Medicine of Zhejiang Chinese Medical University (Huzhou Central Hospital), Huzhou 313000, Zhejiang, China.
Aging
|April 13, 2024
概括
随着年龄的增长,人们的肠道微生物组成发生变化,特定的细菌增加或减少. 肠道细菌的这些变化可能与与年龄相关的疾病有关.
科学领域:
- 微生物学 微生物学
- 老年学是一门学科.
- 人类健康 人类健康 人类健康
背景情况:
- 肠道微生物和衰老是影响疾病发展的关键因素.
- 肠道微生物群落的组成明显受到衰老过程的影响.
研究的目的:
- 在45岁以上的个体中分析时间依赖的肠道微生物概况.
- 为了研究衰老和肠道微生物组成之间的相关性.
主要方法:
- 分析了来自510名45岁以上健康个体的便样本.
- 使用多样性指数 (Shannon,Simpson,Ace) 和β多样性分析 (NMDS) 进行肠道微生物评估.
- 采用随机森林 (RF) 和线性差异分析 (LDA) 来识别特征性微生物及其丰度随年龄的变化.
主要成果:
- 45-49岁的个体表现出最高的肠道细菌丰富度.
- 确定了15种特征性肠道微生物,包括Siphoviridae和Bifidobacterium breve.
- 观察到与年龄相关的微生物丰富性的变化:Ligiactobacillus和Microviridae在65岁以上的人群中增加,而Blautia_A massiliensis,Lubbockvirus和Enterocloster clostridioformis则减少,Klebsiella variicola和Prevotella增加.
结论:
- 不同的肠道微生物特征与不同的年龄组有关.
- 肠道微生物社区结构的改变可能在与年龄相关的疾病中起作用.
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