Airway microbiome is associated with respiratory functions and responses to ambient particulate matter exposure.

Airway microbiome is associated with respiratory functions and responses to ambient particulate matter exposure.
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气道微生物组与呼吸功能和对环境颗粒物暴露的反应有关。

DOI:
10.1016/j.ecoenv.2018.09.079
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发表时间:
2019-01-15
影响因子:
6.8
通讯作者:
Hao K
Hao K
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Wang L;Cheng H;Wang D;Zhao B;Zhang J;Cheng L;Yao P;Di Narzo A;Shen Y;Yu J;Li Y;Xu S;Chen J;Fan L;Lu J;Jiang J;Zhou Y;Wang C;Zhang Z;Hao K

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在流行病学研究中,大气颗粒物(PM)暴露与呼吸功能下降有关。我们假设一个可能的潜在机制是PM暴露对气道微生物组的干扰。2016年10月至2017年10月期间,在中国上海的两个人类队列(共n = 115)中,我们系统地收集了三类数据(1)呼吸功能,(2)痰液中的气道微生物组和(3)环境空气中的环境PM2.5(直径≤ 2.5微米的PM)水平。我们使用混合线性回归模型研究了PM2.5对气道微生物组的影响以及气道微生物组与呼吸功能之间的联系。我们主要关注的呼吸功能包括用力肺活量(FVC)和第一秒用力呼气量(FEV 1)。FEV 1/FVC是COPD的重要呼吸功能特征和关键诊断标准,与气道细菌负荷显著相关(p = 0.0038); FEV 1与气道微生物组特征相关(p = 0.013)。此外,呼吸道微生物组受到PM2.5暴露的显著影响(p = 4.48 E-11)。据我们所知,我们首次证明了PM2.5对气道微生物组的影响,并报告了气道微生物组与呼吸功能之间的联系。研究结果拓展了我们对PM2.5暴露对人体呼吸系统影响范围的认识,并为PM2.5暴露导致的疾病提供了新的病因学机制。
Ambient particulate matter (PM) exposure has been associated with respiratory function decline in epidemiological studies. We hypothesize that a possible underlying mechanism is the perturbation of airway microbiome by PM exposure. During October 2016 – October 2017, on two human cohorts (n = 115 in total) in Shanghai China, we systematically collected three categories of data (1) respiratory functions, (2) airway microbiome from sputum and (3) ambient PM2.5 (PM of ≤ 2.5 micron in diameter) – level in ambient air. We investigated the impact of PM2.5 on airway microbiome as well as the link between airway microbiome and respiratory functions using mix linear regression models. The respiratory function of our primary interest includes forced vital capacity (FVC) and forced expiratory volume in 1st second (FEV1). FEV1/FVC, an important respiratory function trait and key diagnosis criterion of COPD, was significantly associated with airway bacteria load (p = 0.0038); and FEV1 was associated with airway microbiome profile (p = 0.013). Further, airway microbiome was significantly influenced by PM2.5 exposure (p = 4.48E-11). To our knowledge, for the first time, we demonstrated the impact of PM2.5 on airway microbiome, and reported the link between airway microbiome and respiratory functions. The results expand our understanding on the scope of PM2.5 exposure’s influence on human respiratory system, and pointed to novel etiological mechanism of PM2.5 exposure induced diseases.
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