title: Prognostic value of matrix metalloproteinase-2 (MMP-2), matrix metalloproteinase-9 (MMP-9) and aminopeptidase N/CD13 in breast cancer patients.
abstract: The aim of this study was to analyse the expression of matrix metalloproteinase-2(MMP-2), matrix metalloproteinase-9 (MMP-9) and aminopeptidase APN/CD13 in breast carcinoma samples, and their possible prognostic value in breast cancer patients. The expression of MMP-2, MMP-9 and APN/CD13 in tumor cells was analysed in 138 breast carcinomas by immunohistochemical staining of tumor cells using the semiquantitative method for the detection of cytoplasmic and membrane reaction in tumor cells as well as stromal cells positivity. MMP-2 was positive in tumor cells of 52.9% patients and in stromal cells of 74.6% patients, while MMP-9 positive tumor and stromal cells were found in 84.8 and 63.8% patients, respectively. Tumor cell APN/CD13 expression was found in 36.2% patients. Stromal cell MMP-2 expression correlated significantly with tumor size and neoangiogenesis. A positive correlation was also observed between tumor cell MMP-9 expression and hormone receptor status. Stromal cell coexpression of MMP-2/MMP-9 correlated significantly with tumor size. APN/CD13 expression in tumor cells significantly correlated with tumor type and neoangiogenesis. Overall survival was significantly shorter in patients with MMP-2, MMP-2/MMP-9 positive tumor cells, and tended to be shorter in patients with APN/CD13 positive tumor cells. Coexpression of MMP-2/MMP-9 in tumor cells was an independent risk factor for patient survival (OD = 13.9). Our results suggest that MMP-2, MMP-9, APN/CD13 expression and MMP-2/MMP-9 coexpression in combination with other standard prognostic factors can serve as a poor prognostic factor in the evaluation of breast cancer prognosis.
authors: Department of Clinical Cytology, SUNCE Polyclinic, Trnjanska Cesta 108, 10000 Zagreb, Croatia. irena.ranoga9@yahoo.com
authors: Irena
authors: I
authors: Ranogajec
authors: Jasminka
authors: J
authors: Jakić-Razumović
authors: Velibor
authors: V
authors: Puzović
authors: Jelka
authors: J
authors: Gabrilovac
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