AIM: To study the correlation between expression of MMP-2, TIMP-2 protein and the ratio of MMP-2/TIMP-2 and clinicalpathological parameters of patients with gallbladder carcinoma.METHODS: Carcinomas (n=45) and polypoi...AIM: To study the correlation between expression of MMP-2, TIMP-2 protein and the ratio of MMP-2/TIMP-2 and clinicalpathological parameters of patients with gallbladder carcinoma.METHODS: Carcinomas (n=45) and polypoid lesions (n=15) of the gallbladder were studied for the expression of MMP-2 and TIMP-2 protein by immunohistochemical avidin-biotin-complex method and image analysis. Clinicalpathological data of patients with gallbladder carcinoma such as histological type, grade of differentiation, level of infiltration, liver invasion and lymph node involvement, etc, were recorded.RESULTS: There was significant difference between the average level (1.123±0.108 VS 1.030±0.054, P=0.002) of MMP-2, the ratio (1.050±0.013 VS0.937±0.078, P=0.003) of MMP-2/TIMP-2 in gallbladder carcinomas and in polypoid lesions of the gallbladder. Significant difference was found between the expression of MMP-2 in early stage and advanced tumors, but there was no correlation between MMP-2 protein expression and histological type, differentiation degree, infiltration level, lymph node involvement or liver invasion. Although no difference was observed between TIMP-2 expression and histological type or differentiation degree, signific ant difference was found between TIMP-2 expression and different Nevin stage, infiltration level, local lymph node involvement or liver invasion (1.168±0.067 VS1.048±0.075, 1.170±0.062 vs 1.039±0.06g, 1.039±0.076 VS1.147±0.083, 1.048±0.074 vs 1.103±0.095, P＜0.05). MMP-2/TIMP-2 ratio did not correlate with histological type, grade of differentiation and liver invasion, but significant differences were found between MMP-2/TIMP-2 ratio and different Nevin stage, infiltration level and lymph node involvement in patients with carcinoma of gallbladder.CONCLUSION: TIMP-2 and MMP-2/TIMP-2 ratio could reflect more accurately biological characteristic of gallbladder carcinoma and MMP-2/TIMP-2 ratio might be a new significant marker in early diagnosis, in the judgment of invasion or metastasis and the estimate of prognosis in patients with gallbladder carcinomas.展开更多
目的:观察积雪草颗粒对TGF-β1诱导的体外培养的肾小管上皮细胞单核细胞趋化蛋白1(MCP-1)、肝细胞生长因子(HGF)、基质金属蛋白酶-2(MMP-2)、基质金属蛋白酶抑制剂-2(TIMP-2)m RNA表达的影响。方法:将体外培养的大鼠近端肾小管上皮细胞(...目的:观察积雪草颗粒对TGF-β1诱导的体外培养的肾小管上皮细胞单核细胞趋化蛋白1(MCP-1)、肝细胞生长因子(HGF)、基质金属蛋白酶-2(MMP-2)、基质金属蛋白酶抑制剂-2(TIMP-2)m RNA表达的影响。方法:将体外培养的大鼠近端肾小管上皮细胞(NRK52E)随机分为6组:正常对照组、TGF-β1刺激组、积雪草小、中、大剂量组及蒙诺组。培养48h后取出,应用实时荧光定量PCR技术检测细胞MCP-1、HGF、MMP-2、TIMP-2的m RNA表达。结果:与正常对照组比较,TGF-β1刺激组细胞MCP-1、MMP-2、TIMP-2的m RNA表达明显升高(P<0.05),HGF m RNA表达显著增加(P<0.05);各药物干预组与TGF-β1刺激组相比MCP-1、MMP-2、TIMP-2的m RNA明显下降(P<0.05),HGF m RNA表达明显增加(P<0.05);蒙诺组细胞变化与积雪草大剂量组相似。结论:积雪草抗TIF作用可能通过抑制MCP-1、MMP-2、TIMP-2的高表达,上调HGF的表达,调节MMP-2/TIMP-2的平衡而实现,且与其剂量呈正相关。展开更多
基金Scientific Research Foundation of the Railway Ministry,China,No.TDB99-69
文摘AIM: To study the correlation between expression of MMP-2, TIMP-2 protein and the ratio of MMP-2/TIMP-2 and clinicalpathological parameters of patients with gallbladder carcinoma.METHODS: Carcinomas (n=45) and polypoid lesions (n=15) of the gallbladder were studied for the expression of MMP-2 and TIMP-2 protein by immunohistochemical avidin-biotin-complex method and image analysis. Clinicalpathological data of patients with gallbladder carcinoma such as histological type, grade of differentiation, level of infiltration, liver invasion and lymph node involvement, etc, were recorded.RESULTS: There was significant difference between the average level (1.123±0.108 VS 1.030±0.054, P=0.002) of MMP-2, the ratio (1.050±0.013 VS0.937±0.078, P=0.003) of MMP-2/TIMP-2 in gallbladder carcinomas and in polypoid lesions of the gallbladder. Significant difference was found between the expression of MMP-2 in early stage and advanced tumors, but there was no correlation between MMP-2 protein expression and histological type, differentiation degree, infiltration level, lymph node involvement or liver invasion. Although no difference was observed between TIMP-2 expression and histological type or differentiation degree, signific ant difference was found between TIMP-2 expression and different Nevin stage, infiltration level, local lymph node involvement or liver invasion (1.168±0.067 VS1.048±0.075, 1.170±0.062 vs 1.039±0.06g, 1.039±0.076 VS1.147±0.083, 1.048±0.074 vs 1.103±0.095, P＜0.05). MMP-2/TIMP-2 ratio did not correlate with histological type, grade of differentiation and liver invasion, but significant differences were found between MMP-2/TIMP-2 ratio and different Nevin stage, infiltration level and lymph node involvement in patients with carcinoma of gallbladder.CONCLUSION: TIMP-2 and MMP-2/TIMP-2 ratio could reflect more accurately biological characteristic of gallbladder carcinoma and MMP-2/TIMP-2 ratio might be a new significant marker in early diagnosis, in the judgment of invasion or metastasis and the estimate of prognosis in patients with gallbladder carcinomas.
文摘目的:观察积雪草颗粒对TGF-β1诱导的体外培养的肾小管上皮细胞单核细胞趋化蛋白1(MCP-1)、肝细胞生长因子(HGF)、基质金属蛋白酶-2(MMP-2)、基质金属蛋白酶抑制剂-2(TIMP-2)m RNA表达的影响。方法:将体外培养的大鼠近端肾小管上皮细胞(NRK52E)随机分为6组:正常对照组、TGF-β1刺激组、积雪草小、中、大剂量组及蒙诺组。培养48h后取出,应用实时荧光定量PCR技术检测细胞MCP-1、HGF、MMP-2、TIMP-2的m RNA表达。结果:与正常对照组比较,TGF-β1刺激组细胞MCP-1、MMP-2、TIMP-2的m RNA表达明显升高(P<0.05),HGF m RNA表达显著增加(P<0.05);各药物干预组与TGF-β1刺激组相比MCP-1、MMP-2、TIMP-2的m RNA明显下降(P<0.05),HGF m RNA表达明显增加(P<0.05);蒙诺组细胞变化与积雪草大剂量组相似。结论:积雪草抗TIF作用可能通过抑制MCP-1、MMP-2、TIMP-2的高表达,上调HGF的表达,调节MMP-2/TIMP-2的平衡而实现,且与其剂量呈正相关。
