栀子苷调节AMPK/SIRT1/NF-κB信号通路对急性呼吸窘迫综合征大鼠肺损伤的影响OA北大核心CSTPCD
Impact of geniposide on lung injury in rats with acute respiratory distress syndrome by regulating AMPK/SIRT1/NF-κB signaling pathway
目的:探讨栀子苷(GE)通过调节AMP活化蛋白激酶(AMPK)/沉默信息调节因子1(SIRT1)/核因子κB(NF-κB)信号通路对急性呼吸窘迫综合征(ARDS)大鼠肺损伤的影响.方法:通过气管滴注脂多糖(LPS)方法建立ARDS大鼠模型.将建模后的50只大鼠随机分为ARDS组、GE低剂量(GE-L,12.5 mg/kg GE)组、GE中剂量(GE-M,25 mg/kg GE)组、GE高剂量(GE-H,50 mg/kg GE)组、GE-H+Compound C(AMPK抑制剂,50 mg/kg GE+250 µg/kg Compound C)组,另取10只正常大鼠为对照组.干预后,分别取出各组大鼠支气管肺泡灌洗液(BALF)及肺组织,检测肺湿干重比(W/D);ELISA法检测BALF中炎症因子IL-6、干扰素-γ(IFN-γ)、肿瘤坏死因子-α(TNF-α)水平;免疫组化法检测肺组织中血管细胞黏附因子(VCAM-1)、血管内皮细胞生长因子(VEGF)阳性表达;HE染色观察肺组织病理变化;Western blot检测肺组织中AMPK/SIRT1/NF-κB通路蛋白表达水平.结果:ARDS组W/D、IFN-γ、IL-6、TNF-α水平、p-NF-κB p65/NF-κB p65、VCAM-1表达较对照组显著升高,p-AMPK/AMPK、SIRT1、VEGF表达显著降低(P<0.05);经不同剂量GE治疗后,W/D、IFN-γ、IL-6、TNF-α水平、p-NF-κB p65/NF-κB p65、VCAM-1表达较ARDS组逐渐降低;p-AMPK/AMPK、SIRT1、VEGF表达逐渐升高(P<0.05);Compound C逆转了GE-H组对ARDS大鼠的保护作用(P<0.05).结论:GE可以改善ARDS大鼠肺损伤状况,降低炎症因子水平,可能与激活AMPK/SIRT1/NF-κB信号通路有关.
Objective:To investigate the impact of geniposide(GE)on lung injury in rats with acute respiratory distress syn-drome(ARDS)by regulating AMP-activated protein kinase(AMPK)/silencing information regulator 1(SIRT1)/nuclear factor κB(NF-κB)signaling pathway.Methods:The ARDS rat model was established by tracheal instillation of lipopolysaccharide(LPS).Fifty rats after modeling were randomly group into ARDS group,GE low-dose(GE-L,12.5 mg/kg GE)group,GE medium-dose(GE-M,25 mg/kg GE)group,GE high-dose group(GE-H,50 mg/kg GE)group and GE-H+Compound C(AMPK inhibitor,50 mg/kg GE+250 µg/kg Compound C)group,another 10 normal rats were used as the control group.After the intervention,the bronchoalveolar la-vage fluid(BALF)and lung tissue of the rats in each group were taken out,respectively,and the ratio of lung wet to dry weight(W/D)was detected;ELISA was used to detect the levels of inflammatory factors IL-6,interferon-γ(IFN-γ),tumor necrosis factor-α(TNF-α)in BALF;the positive expressions of vascular cell adhesion factor(VCAM-1)and vascular endothelial cell growth factor(VEGF)in lung tissue were detected by immunohistochemistry;HE staining was used to observe the pathological changes of lung tissue;Western blot was used to detect the expression levels of AMPK/SIRT1/NF-κB pathway proteins in lung tissue.Results:The levels of W/D,IFN-γ,IL-6,TNF-α,p-NF-κB p65/NF-κB p65 and VCAM-1 in ARDS group were significantly higher than those in control group,the expressions of p-AMPK/AMPK,SIRT1 and VEGF were significantly decreased(P<0.05);after different doses of GE treatment,the levels of W/D,IFN-γ,IL-6,TNF-α,and the expressions of p-NF-κB p65/NF-κB p65 and VCAM-1 were gradually decreased compared with those in ARDS group;the expressions of p-AMPK/AMPK,SIRT1 and VEGF increased gradually(P<0.05);Compound C reversed the protective effect of GE-H on ARDS rats(P<0.05).Conclusion:GE can improve lung injury in ARDS rats and reduce levels of inflammatory factors,which may be related to activation of AMPK/SIRT1/NF-κB signaling pathway.
孙立燕;张海燕;刘泽茹;尹庆卫
山东省潍坊市中医院重症医学科,潍坊 261041北京大学人民医院急诊科,北京 100044济宁医学院附属医院呼吸内科,济宁 272007
临床医学
栀子苷急性呼吸窘迫综合征AMPK/SIRT1/NF-κB信号通路肺损伤
GeniposideAcute respiratory distress syndromeAMPK/SIRT1/NF-κB signaling pathwayLung injury
《中国免疫学杂志》 2024 (006)
1142-1146,1152 / 6
潍坊市科技发展计划基金项目(2019YX056);潍坊市卫生健康委员会中医药科研项目(2019-04-083).
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