| Summary: | 碩士 === 中山醫學大學 === 生化暨生物科技研究所 === 94 === The involvements of matrix metalloproteinase-2 (MMP-2) in the pathogenesis of breast cancers have been established. The aim of the present study was to determine the concentrations of MMP-2 in serum samples and tumor tissues of breast cancer patients.Gelatin zymography and ELISA were employed to measure MMP-2 and MMP-9 concentrations in 90 breast cancer patients, including 60 tissue samples and 30 serum samples.ProMMP-2, activated MMP-2, proMMP-9 and activated MMP-9 levels were significantly higher in tumor tissues than that of corresponding paired adjacent normal tissue of 60 breast cancer patients (p<0.05). Further linear regression analysis has showed that the tumor size positively correlated with MMP-2 level in tumor tissue samples (R=0.55,p<0.0001), as well as with that of in serum samples (R=0.398, p=0.032). In addition, further statistical analysis for clinic pathological parameters revealed that MMP-2 level was significantly increased in patients with metastasis (p<0.05). Furthermore, MMP-2 level was significantly different between tumor grades (p=0.006). Conclusions: MMP-2 levels in serum and tumor tissue might reflect the severity of invasion of breast cancer and various MMP inhibitors might be selectively used as potential anti-metastasis agents according to tumor size.
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