知识与财富的链接
目的:观察甲磺酸伊马替尼(以下简称伊马替尼)对博莱霉素诱导的小鼠肺纤维化的干预作用,并探讨其可能的作用机制。方法:C57BL/6小鼠随机分为对照组、模型组、地塞米松组和伊马替尼组(n=30)。采用博莱霉素制备小鼠肺纤维化模型,分别于术后第7、14、21天各处死10只小鼠,免疫组化半定量分析各组肺组织转化生长因子β1(TGF-β1)、基质金属蛋白酶 1(MMP-1)、基质金属蛋白酶抑制剂 1 (TIMP-1)表达的变化,并作相关性分析。结果:与模型组比较,伊马替尼组、地塞米松组肺组织TIMP-1、MMP-1、TGF-β1表达均降低(P<0.01)。TIMP-1表达与TGF-β1呈正相关(r=0.243,P=0.004);除正常对照组外,其余3组MMP-1表达与TIMP-1表达呈负相关(r=-0.291,P＜0.000 1)。结论:甲磺酸伊马替尼可能通过下调TGF-β1抑制TIMP-1表达,从而相对上调MMP-1,维持TIMP-1/MMP-1平衡,抑制博莱霉素诱导的小鼠肺纤维化,作用效果与地塞米松类似。
Objective:To observe the effect of imatinib mesylate on pulmonary fibrosis(PF)induced by bleomycin in mice and to explore the related mechanism.Methods:Totally 120 C57BL/6 mice were evenly randomized into control group,model group,dexamethasone group and imatinib group.The pulmonary fibrosis model was established using a single intratracheal infusion of bleomycin;the corresponding drugs were given to mice in each group.Ten mice was sacrificed in each group on day 7,14,and 21 after operation,respectively.The...
