[肠道微生物群变化的特征及其与AML患者诱导化疗期间感染并发症的关系]
Quan-Lei Zhang1, Li-Li Dong2, Lin-Lin Zhang2
1Chinese PLA Medical School, Beijing 100853, China.
Zhongguo shi yan xue ye xue za zhi
|July 4, 2025
概括
在急性髓性白血病 (AML) 的诱导化疗期间,肠道微生物群多样性下降,机会性病原体增加,可能导致血液感染. 较低的基线Bacteroidetes水平预测了感染风险.
科学领域:
- 微生物组研究的研究.
- 在瘤学瘤学.
- 传染病 传染病是一种传染病.
背景情况:
- 接受诱导化疗的急性髓性白血病 (AML) 患者经历了显著的生理压力.
- 肠道微生物群的改变越来越被认为是癌症治疗结果的关键因素.
- 了解这些变化对于管理AML患者的并发症至关重要.
研究的目的:
- 在AML患者的诱导化疗期间描述肠道微生物群动态.
- 调查肠道微生物变化与传染性并发症之间的关联.
- 为了确定潜在的微生物生物标志物来预测感染风险.
主要方法:
- 在四个不同的时间点从37名AML患者收集的便样本.
- 用于分析动态肠道微生物群组成的元基因组测序.
- 相关性和回归分析用于将微生物变化与感染发展联系起来.
主要成果:
- 在化疗期间观察到肠道微生物群α-多样性的显著波动 (香农指数),在中性衰竭期间显著下降.
- 减少有益的细菌 (Firmicutes, Bacteroidetes) 和增加机会性病原体 (Enterococcus, Klebsiella, E. coli). 这两种方法可以减少疾病的发生.
- 在肠道微生物群中发现的血液感染病原体;较低的基线 Bacteroidetes 丰度与感染风险增加相关 (OR=13.143).
结论:
- 诱导化疗对AML患者的肠道微生物群产生了深刻的影响,增加了机会性病原体的丰富性.
- 肠道微生物群失调与AML患者的血液感染有关.
- 基线 Bacteroidetes 丰富性作为传染性并发症的重要独立预测因素.
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