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PM2.5对肺纤维化的影响 被引量:5

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摘要 大气颗粒物主要组分可吸入颗粒物是大气中空气动力学直径≤2.5微米的细小颗粒(PM2.5),由于其直径微小,在被吸入人体后,可以到达肺泡或进入血液,尤其对那些已有肺部基础疾病的患者产生不良影响,对人体健康的危害程度要远大于体积较大的颗粒物。肺纤维化是一组由已知或未知原因引起、以肺间质慢性非特异性炎症和大量胶原纤维沉积为病理特征的疤痕化肺部疾病,其中最具代表性的病种为特发性肺纤维化(IPF),其病因不明,病情进行性进展,病死率高,预后差,诊断后生存期仅2~5年,目前除了肺移植,尚无有效的抗纤维化药物。其主要的瓶颈在于IPF 的病因不清,发病机理不明。目前虽然没有 PM2.5与肺纤维化相关性的研究报道,但临床不断增加的肺纤维化患者数量与我国空气污染的严重程度均呈现出明显上升趋势,我们通过查阅大量文献以期间接发现两者之间存在的可能关联。
作者 胡洋 李惠萍
出处 《临床内科杂志》 CAS 2015年第4期228-230,共3页 Journal of Clinical Internal Medicine
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