共同口腔微生物群,疾病严重程度和纤维化肺部疾病的死亡率
David N O'Dwyer1, John S Kim2, Shwu-Fan Ma2
1Department of Medicine, University of Michigan Medical School, Ann Arbor, Michigan.
American journal of respiratory and critical care medicine
|December 5, 2023
概括
口腔细菌的多样性影响异常性肺纤维化 (IPF) 的严重程度和存活率. 更高的多样性与更差的肺功能和增加的死亡率有关,而Streptococcus的存在表明更好的结果.
科学领域:
- 微生物组研究的研究.
- 肺部医学 肺部医学
- 口腔健康 口腔健康
背景情况:
- 口腔微生物群与口腔疾病有关,并且可以影响肺部微生物群.
- 口腔微生物群在诸如异常性肺纤维化 (IPF) 等肺部疾病的进展中的特定作用仍然在很大程度上是未知的.
- 了解这些联系对于确定潜在的治疗点和改善患者治疗结果至关重要.
研究的目的:
- 研究患有异常性肺纤维化 (IPF) 患者口腔微生物组组成和疾病严重程度之间的关联.
- 确定口腔微生物群与IPF患者死亡风险之间的关系.
- 探索口腔微生物群中的特定细菌种群,可以预测IPF的进展和生存.
主要方法:
- 分析了来自511名IPF患者口腔抽样中的16S rRNA基因和枪元基因组测序数据.
- 微生物组数据与肺功能测量 (例如,FVC) 的相关性,使用统计模型,如主要成分分析和线性回归.
- 使用生存分析技术 (Cox模型,Kaplan-Meier模型) 评估口腔微生物组概况和死亡率之间的关联.
主要成果:
- 增加的口腔微生物多样性与较低的强迫生命能力 (FVC) 有关,这表明在基线时肺功能较差.
- 口腔微生物组中较高的*Streptococcus*的丰度与FVC有积极的相关性,这表明它对肺功能有保护作用.
- 较大的微生物多样性预测了IPF患者死亡风险增加 (HR 1.73),而较高比例的*Streptococcus*与死亡风险降低有关 (HR 0.85).
结论:
- 口腔微生物多样性是异常性肺纤维化 (IPF) 疾病严重程度和死亡率的重要预测因素.
- 口腔细菌*Streptococcus*,特别是*Streptococcus mitis*物种,与保持肺功能和改善IPF的存活率有关.
- 向或调节口腔微生物群,特别是促进有益的细菌,如*Streptococcus*,可能为IPF管理提供一种新的治疗策略.
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