目的探讨散结通络方对缺血性肾病晚期大鼠肾组织基质金属蛋白酶2(MMP-2)、基质金属蛋白酶组织抑制因子2(TIMP-2)表达的影响。方法将SD雄性大鼠按随机数字表法分为假手术组、模型组(均给予生理盐水3 m L/d)、药物组[散结通络方10.85 g/(k...目的探讨散结通络方对缺血性肾病晚期大鼠肾组织基质金属蛋白酶2(MMP-2)、基质金属蛋白酶组织抑制因子2(TIMP-2)表达的影响。方法将SD雄性大鼠按随机数字表法分为假手术组、模型组(均给予生理盐水3 m L/d)、药物组[散结通络方10.85 g/(kg·d)],采用单侧肾动脉不全结扎术建立模型。于实验第28天检测大鼠24 h尿蛋白定量及血肌酐。处死大鼠,取肾组织做光镜检查,观察各组大鼠肾脏形态学改变;免疫组化法检测肾组织MMP-2、TIMP-2表达。结果光镜下模型组和药物组大鼠的肾小球及肾小管间质均有损伤。与假手术组比较,模型组和药物组肾小球硬化指数评分及肾小管间质损伤评分均明显升高(P<0.01),而药物组较模型组降低(P<0.01)。与模型组比较,药物组MMP-2表达升高(P<0.01),24 h尿蛋白定量、血肌酐及TIMP-2表达降低(P<0.01),且两组均高于假手术组(P<0.01)。结论散结通络方可能通过上调MMP-2、下调TIMP-2在肾组织中的表达对缺血性肾病晚期病变起防治作用。展开更多
Objective:The aim of the study was to investigate the expressions of matrix metalloproteinase-2(MMP-2) and tissue inhibitor of MMP-2(TIMP-2) mRNA in transitional cell carcinomas of bladder and discuss their clinical s...Objective:The aim of the study was to investigate the expressions of matrix metalloproteinase-2(MMP-2) and tissue inhibitor of MMP-2(TIMP-2) mRNA in transitional cell carcinomas of bladder and discuss their clinical significances.Methods:Using RT-PCR and real time quantitative PCR(RQ-PCR) technique,the expressions of MMP-2 and TIMP-2 mRNA of 45 cases of bladder carcinoma(tumor group) and 10 cases of normal bladder tissue(control group) were analyzed.Results:MMP-2 and TIMP-2 were not expressed in control group.MMP-2 was expressed in 30 cases tumor samples and TIMP-2 was expressed in 26 cases.The expression of MMP-2 mRNA in non-muscle invasive bladder cancers and grade I cancers was lower than that in muscle invasive bladder cancers and grades II-III cancers respectively.The differences were statistically significant(P<0.05).The expression of MMP-2 in recurrent patients was higher than that in incipient patients.TIMP-2 mRNA expression decreased with grades and stage.The expression of TIMP-2 in non-muscle invasive bladder cancers and grade I cancers was higher than that in muscle invasive bladder cancers and grades II-III cancers respectively.There was statistical difference between two groups(P < 0.05).TIMP-2 expression in incipient patients was higher than that in recurrent patients,but the difference was not significant(P>0.05).Conclusion:These results suggest that MMP-2 and TIMP-2 play an important role in the invasion step of transitional cell carcinoma of bladder.MMP-2 may become a new approach to the diagnosis of bladder carcinoma.展开更多
文摘Objective:The aim of the study was to investigate the expressions of matrix metalloproteinase-2(MMP-2) and tissue inhibitor of MMP-2(TIMP-2) mRNA in transitional cell carcinomas of bladder and discuss their clinical significances.Methods:Using RT-PCR and real time quantitative PCR(RQ-PCR) technique,the expressions of MMP-2 and TIMP-2 mRNA of 45 cases of bladder carcinoma(tumor group) and 10 cases of normal bladder tissue(control group) were analyzed.Results:MMP-2 and TIMP-2 were not expressed in control group.MMP-2 was expressed in 30 cases tumor samples and TIMP-2 was expressed in 26 cases.The expression of MMP-2 mRNA in non-muscle invasive bladder cancers and grade I cancers was lower than that in muscle invasive bladder cancers and grades II-III cancers respectively.The differences were statistically significant(P<0.05).The expression of MMP-2 in recurrent patients was higher than that in incipient patients.TIMP-2 mRNA expression decreased with grades and stage.The expression of TIMP-2 in non-muscle invasive bladder cancers and grade I cancers was higher than that in muscle invasive bladder cancers and grades II-III cancers respectively.There was statistical difference between two groups(P < 0.05).TIMP-2 expression in incipient patients was higher than that in recurrent patients,but the difference was not significant(P>0.05).Conclusion:These results suggest that MMP-2 and TIMP-2 play an important role in the invasion step of transitional cell carcinoma of bladder.MMP-2 may become a new approach to the diagnosis of bladder carcinoma.
