摘要急性肺损伤(ALI)及其严重形式急性呼吸窘迫综合征(ARDS)是临床常见危重症,发病诱因复杂多样,主要病理特征是气血屏障破坏导致的弥漫性炎性、蛋白性肺水肿.活性氧(ROS)可氧化脂质、蛋白质、核酸等大分子物质从而介导氧化损伤.在产生ROS的诸多体系中,还原型辅酶Ⅱ(NADPH)氧化酶介导的ROS是其主要来源,其功能亚基、跨膜亚基NOX家族在肺组织中的分布具有细胞类型依赖性.NOX来源的ROS参与肺组织的防御功能并且与ALI/ARDS的发生发展相关.本文主要从NOX家族在肺组织中的细胞分布、活化因素及与ALI发生发展的关系进行综述.

abstractsAcute?lung?injury?(ALI)?and?its?severe?form,?acute?respiratory?distress?syndrome?(ARDS),?are?common?critical?syndromes.?The?causes?of?the?syndrome?are?complex?and?diverse.?The?main?pathological?features?are?the?diffuse?inflammatory?and?protein-rich?pulmonary?edema?caused?by?destruction?of?the?blood-air?barrier.?Reactive?oxygen?species?(ROS)?mediate?oxidative?damage?by?oxidizing?bio-macromolecules,?including?lipids,?proteins?and?nucleic?acid.?Among?many?systems?producing?ROS,?nicotinamide-adenine?dinucleotide?phosphate?(NADPH)?oxidase-mediated?ROS?is?the?main?source,?and?its?functional?subunit?is?the?transmembrane?subunit?NOX?family.?The?distribution?of?NOX?family?proteins?in?lung?tissue?is?cell?type?dependent.?NOX-derived?ROS?is?involved?in?the?defense?function?of?lung?tissue?and?related?to?the?occurrence?and?development?of?ALI/ARDS.?This?review?mainly?describes?the?cell?distribution,?activation?factors,?and?its?relationship?with?the?occurrence?and?development?of?ALI?of?the?NOX?family.