【摘要】 目的观察参芪补肺汤对肺气虚证慢性阻塞性肺疾病(COPD)大鼠气道重构中基质金属蛋白酶(MMPs)及其组织型金属蛋白酶抑制物(TIMPs)蛋白表达的影响。方法用烟、二氧化硫定量熏吸并复合木瓜蛋白酶雾化吸入法,建立肺气虚证COPD大鼠模型。60只雄性Wistar大鼠随机分为正常组、模型组、补低组、补中组、补高组、激素组。半定量图像分析法测量小气道管壁和平滑肌层厚度;免疫组化法检测支气管肺组织MMP-9、TIMP-1的表达。结果与正常组比较,模型组MMP-9和TIMP-1蛋白在支气管肺组织中高表达(P<0.01),小气道管壁及平滑肌层均显著增厚(P<0.01)。治疗后,与模型组比较,补高组、补中组和激素组MMP-9蛋白表达显著减少(P<0.01),激素组优于中药组(P<0.01);补高组、补中组TIMP-1蛋白表达均显著减少(P<0.01);补高组管壁及平滑肌层厚度显著降低(P<0.05)。结论参芪补肺汤可抑制支气管肺组织MMP-9、TIMP-1蛋白表达,干预肺气虚证COPD大鼠气道重构。更多还原

【Abstract】 Objective To observe the effects of Shenqi Bufeitang on expessions of metalloproteinase-9 (MMP-9) and tissue inhibitor of metalloproteinase-1 (TIMP-1) in the airway remodeling of COPD rat model with lung-Qi deficiency syndrome. Methods Quantitative stimulation with tobacco,SO2 and papin was made to establish COPD rat model with lung-Qi deficiency syndrome. Sixty male rats were randomly divided into normal group (N),model group (M),low dose treatment group (LT),medium dose treatment group (MT),high dose treatment group (HT) and glucocorticoid treatment group (GCT). The thicknesses of the airway wall and smooth muscle layer of the small airway were measured by means of image analyzer. The protein expressions of MMP-9 and TIMP-1 were examined by immunohistochemical analysis. Results The protein expressions of MMP-9 and TIMP-1 in brouch us and lung and the thinknesses of the airway wall and smooth muscle layer in M group were significanthly higher than those in N group (P <0.01). After treatment,the protein expressions of MMP-9 in HT,MT and GCT group were lower than those in M group (P <0.01),GCT group was better than HT,MT group. The protein expressions of TIMP-1 in HT,MT group were lower than that in the M group. The thinkness of the airway wall and smooth muscle layer were lower in HT group than those in M group (P <0.05). Conclusion Shenqi Bufeitang may downregulate the protein expressions of MMP-9 and TIMP-1 and intervene the airway remodeling of COPD rat model with lung-Qi deficiency syndrome.更多还原