慢性支气管炎、慢性阻塞性肺病患者血清Ｃ3和Ｃ4补体成分水平比健康人低,这提示由于反复呼吸道感染结果导致持续补体活化。因为补体活化使炎症细胞进入肺实质,随后弹性蛋白酶和氧化剂释放造成对肺脏弹性组织的损害,本文作者研究的目的是探讨血清补体水平的消耗与肺脏弹性组织破 Chronic bronchitis, chronic obstructive pulmonary disease serum C3 and C4 complement levels lower than healthy people, suggesting that as a result of repeated respiratory infections lead to sustained complement activation. Because complement activation causes inflammatory cells to enter the parenchyma, followed by the release of elastase and oxidants that cause damage to the elastic tissue of the lungs, the aim of the authors’ study was to investigate the relationship between the depletion of serum complement levels and the loss of lung elastic tissue