alexa [Serum level of MMP-2 in early breast cancer and its correlation with circulating tumor cells].
Oncology

Oncology

Journal of Carcinogenesis & Mutagenesis

Author(s): Zhang JL, Yao Q, Chen JH, Wang T, Wang H,

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Abstract OBJECTIVE: To explore the serum levels of MMP-2 in early breast cancer and its clinical significance and correlation with the circulating tumor cells in the patients. METHODS: The serum levels of MMP-2 in breast fibroadenoma (n = 10) and breast cancer (n = 72) were detected by enzyme-linked immunosorbent assay (ELISA). And CK19 mRNA was measured by quantitative reverse transcription-polymerase chain reaction in blood as an index of circulating tumor cells in the patients. RESULTS: The serum level of MMP-2 in breast cancer was significantly higher than that in breast fibroadenoma (12.24 vs 2.21 µg/L, P = 0.003). Subgroup analysis showed that the serum levels of MMP-2 were higher in HER-2 positive patients than those in HER-2 negative ones (16.77 vs 10.02 µg/L, P = 0.022). CK19 mRNA was found in blood samples from 30 cases of breast cancer and the positive rate was 41.7\%. However, it was not detected in the patients with breast fibroadenoma. The mean levels of serum MMP-2 were (15.48 ± 2.02) and (7.16 ± 1.55) µg/L in CK19 positive and negative patients respectively. Significant difference existed between two groups (P = 0.013). CONCLUSION: The serum level of MMP-2 in early breast cancer is closely correlated with blood micrometastasis. And its high level may be an important contributing factor for the metastasis of breast cancer.
This article was published in Zhonghua Yi Xue Za Zhi and referenced in Journal of Carcinogenesis & Mutagenesis

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