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炎症性肠病(inflammatory bowel disease, IBD)是一种慢性胃肠道疾病,其主要类型可分为溃疡性结肠炎(ulcerative colitis, UC)和克罗恩病(Crohn′s disease, CD)两种。IBD的病理特征主要是肠道出现溃疡和肠道黏膜存在大量炎性细胞浸润等[1]。目前,IBD的发病机制尚不明确,但越来越多的证据表明,氧化应激(oxidative stress, OS)与IBD中表现出的某些典型临床特征有关,并且在IBD的发病机制和发展过程中起重要作用。氧化应激可引起机体组织细胞氧化还原状态的失衡,并大量积累活性氧(reactive oxygen species, ROS),诱发氧化应激损伤扰乱细胞内环境稳态,从而间接参与或直接导致肠道菌群紊乱、免疫反应失调、黏膜屏障功能改变、自噬功能异常以及肠道纤维化,加重肠道炎症以及胃肠道黏膜上皮损伤[2-3]。因此,探索氧化应激在IBD中的作用机制,有望揭示IBD潜在的发病机制,为临床诊疗方案提供可行的新思路。
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