从不吸烟与既往吸烟的肺癌患者空气污染暴露情况比较

2021-11-15 小文子 MedSci原创

从不吸烟的肺癌患者与女性、亚裔和空气污染暴露密切相关。

空气污染可能在从不吸烟的肺癌人群,尤其是东亚女性中扮演重要角色。Journal of Thoracic Oncology发表的一项研究比较了既往吸烟与从不吸烟的肺癌患者的累积环境空气污染暴露。

研究比较了从不和既往吸烟的新诊断肺癌患者的性别、种族、室外和室内空气污染暴露情况。从不吸烟者定义为一生中吸烟少于100支的人,使用SHS评分评估二手烟的暴露情况。根据个人居住史,采用高空间分辨率全球暴露模型量化20年室外颗粒物(PM2.5)的累积暴露。

结果纳入1005例肺癌患者,56%为女性,33%从不吸烟。与既往吸烟的肺癌患者相比,从不吸烟的肺癌患者明显年龄更小(66.5±10.2 vs 69.2±8.3, p=0.0001),女性更常见(70.5% vs 48.2%, p<0.001),亚裔(67.8% vs 16.7%, p<0.001),高中以上文化(61.8% vs 50.3%,p=0.001)。此外,从不吸烟的肺癌患者患COPD(4.5% vs 35.5%,p<0.001)或有肺癌家族史(19.4% vs 26.6%,p=0.01)的可能性更小。室外PM2.5暴露量更高,但二手烟暴露量较低。

多元logistic回归分析显示,从不吸烟的肺癌患者与女性(OR=4.01, 95% CI: 2.76–5.82,p<0.001)、亚裔(OR Asian versus non-Asian=6.48, 95%CI: 4.42–9.50,p<0.001)以及空气污染暴露量较高显著相关(ORln_PM2.5=1.79,95%CI:1.10–7.2.90,p=0.019)。此外,低教育水平、COPD病史和二手烟暴露与既往吸烟的肺癌相关。

与既往吸烟的肺癌患者相比,从不吸烟的肺癌患者与女性、亚裔和空气污染暴露密切相关。结果表明,评估肺癌风险时,应考虑环境空气污染物的累积暴露情况以及性别和种族,并准确量化传统危险因素吸烟。

原文出处:

Renelle Myers, Michael Brauer, et al, High-Ambient Air Pollution Exposure Among Never Smokers Versus Ever Smokers With Lung Cancer, Journal of Thoracic Oncology,2021,https://doi.org/10.1016/j.jtho.2021.06.015.

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