Eur Respir J:COPD患者吸入皮质类固醇与肺癌发病率

2019-11-23 xing.T MedSci原创

由此可见,吸入皮质类固醇激素与减少COPD患者的肺癌发生率无关。观察性研究报道,这种减少可能受到与时间相关的偏倚和纳入哮喘患者的影响。

吸入皮质类固醇(ICS)被建议作为肺癌的潜在化学预防方法。在COPD患者中进行的几项观察性研究报告了不一致的结果,要么因使用ICS导致肺癌发生率显着降低,要么无效。近日,呼吸疾病领域权威杂志Eur Respir J上发表了一篇研究文章,研究人员使用避免影响某些研究的偏倚的方法评估了这种关联。

研究人员使用魁北克医疗数据库创建了一个COPD患者队列,这些患者为2000-2014期间使用长效支气管扩张剂的新用户,并一直随访肺癌的首次诊断,直至2015年。进入队列后一年的延迟观察被用来避免原发病偏见,并且开始使用ICS后纳入了一年的潜伏期。经过时间变量Cox回归模型评估了与ICS暴露相关的肺癌风险比(HR),并进行了协变量调整。

该队列纳入了58177名受试者,包含63%接受ICS的受试者,其中954名受试者在平均随访5年时发生肺癌。相对于未使用ICS,与任何ICS暴露相关的肺癌调整后的HR为0.94(95%CI为0.81-1.07)。自开始ICS来,使用时间较长(>4年)的HR为0.86(95%CI为0.70–1.07),而平均每日ICS剂量较高(>1000mcg氟替卡松当量)为1.50(95%CI为0.88–2.57)。

由此可见,吸入皮质类固醇激素与减少COPD患者的肺癌发生率无关。观察性研究报道,这种减少可能受到与时间相关的偏倚和纳入哮喘患者的影响。

原始出处:

Samy Suissa,et al.Inhaled corticosteroid use and the incidence of lung cancer in COPD.Eur Respir J.2019.https://erj.ersjournals.com/content/early/2019/11/13/13993003.01720-2019

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    2019-11-25 gous

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