杨丽梦,熊旭东

• 1:上海中医药大学附属曙光医院

摘要(Abstract)：

目的观察通腑平喘方对脓毒症急性肺损伤大鼠核因子E2相关因子(Nrf2)表达的影响,探讨通腑平喘方对脓毒症急性肺损伤抗氧化应激的作用机制。方法采用CLP制作脓毒症模型,将40只成年雄性SD大鼠随机分为正常组、中药组、模型组及假手术组4组,每组10只。正常组于6 h、12 h后予以0.9%氯化钠注射液灌胃。假手术组开腹后将盲肠取出后再回纳到腹腔,术后6 h、12 h予以0.9%氯化钠注射液灌胃。模型组CLP术后立即予以0.9%氯化钠注射液灌胃,术后6 h、12 h予以0.9%氯化钠注射液灌胃。中药组CLP术后立即予以通腑平喘方灌胃,术后6 h、12 h再次予以通腑平喘方灌胃。以上各组均在24 h后麻醉并行腹主动脉采血致死,取出肺组织。术后观察大鼠一般情况,检测各组血清Nrf2、超氧化物歧化酶(SOD)、谷胱甘肽(GSH)、丙二醛(MDA)含量,RT-PCR法检测肺组织中Nrf2 m RNA表达量。结果中药组的血清Nrf2含量及Nrf2 mRNA表达水平高于模型组(P <0.01)。模型组大鼠血清MDA含量与正常组、假手术组及中药组相比明显升高(P <0.05),血清SOD含量及血清GSH含量与正常组、假手术组及中药组相比明显降低(P <0.05)。结论通腑平喘方对脓毒症急性肺损伤大鼠有保护作用,其机制可能与其激活Nrf2,上调SOD、GSH有关,起到抑制氧化应激反应、减轻肺组织损伤的作用。

关键词(KeyWords)： 氧化应激;Nrf2;脓毒症;急性肺损伤

Abstract:

Keywords:

基金项目(Foundation): 上海市高等学校博士学科点专项科研基金项目(20113107110003)

作者(Author): 杨丽梦,熊旭东

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