肠道微生物群的变化及其功能差异在抑郁症根据亚洲个体的肠型
Sunmin Park1,2, Chen Li1, Xuangao Wu2
1Department of Food and Nutrition, Obesity/Diabetes Research Center, Hoseo University, Asan-si 31499, Republic of Korea.
International journal of molecular sciences
|September 9, 2023
概括
肠道微生物组合的变化,特别是特定肠类型 (ET-L和ET-B) 内的变化,与中国成年人的抑郁症有关. 与抑郁症相关的关键细菌属和代谢途径为肠-大脑轴提供了洞察力.
科学领域:
- 微生物组研究 微生物组研究
- 肠-大脑轴 肠-大脑轴
- 抑郁症的发病因子
背景情况:
- 肠道微生物群在宿主生理学中起着至关重要的作用,并与各种神经和精神疾病有关.
- 肠型为分类肠道微生物群落提供了一个框架,可能揭示疾病特异性模式.
- 了解肠道微生物群在抑郁症中的作用对于开发新的治疗策略至关重要.
研究的目的:
- 调查抑郁症患者和健康对照人群之间肠道微生物组成的差异,按肠型分类.
- 在不同的肠型中识别与抑郁相关的特定细菌种群和代谢途径.
- 在亚洲人群中抑郁症病原体的背景下探索肠-大脑轴连接.
主要方法:
- 从333名中国参与者 (226名抑郁症患者,107名健康患者) 的便样本使用FASTA/Q测序进行了分析.
- 参与者被分为三种类型:Bacteroidaceae (ET-B),Lachnospiraceae (ET-L) 和Prevotellaceae (ET-P).他们被分为三种类型.
- 使用多样性分析 (α和β),线性差异分析 (LDA),ANOVA类微分表达-2 (ALDEx2),机器学习和网络分析.
主要成果:
- 在健康和抑郁群体之间没有观察到跨肠型的α多样性的显著差异.
- 贝塔多样性分析显示了肠道微生物组成的实质差异,特别是ET-L和ET-B.
- 在ET-L和ET-B内的抑郁症组中,特定的属 (例如, *Mediterraneibacter*, *Blautia*, *Bifidobacterium*, *Clostridium*) 和物种 (*Blautia luti*, *Clostridium innocuum*) 发生了显著的变化. 与葡萄糖,三,神经递质代谢和免疫功能相关的代谢途径与抑郁症负面相关,特别是在ET-L.
结论:
- 肠道微生物群的组成在患有抑郁症和没有抑郁症的个体之间有显著差异,特别是在特定的肠类型 (ET-L和ET-B) 中.
- 某些细菌属和物种的丰度变化,以及代谢途径的变化,与抑郁症有关.
- 这些发现强调了肠-大脑轴在抑郁症中的作用,并建议精准医学干预的潜在目标.
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