Immunohistochemical Expression of Tissue Inhibitor of Metalloproteinase-1 (Timp-1) in Invasive Breast Carcinoma
Keywords: breast carcinoma, tissue inhibitor of metalloproteinase-1, immunohistochemistry
AbstractTissue inhibitor of metalloproteinase-1 (TIMP-1) is a natural inhibitor of matrix metalloproteinas-es (MMPs). Aim of this study was to assess the immunohistochemical expression of TIMP-1 in invasive breast carcinomas, and to examine its association with classical clinico-pathological parameters, oestrogen receptor, progesterone receptor and Her-2/neu protein expression. Immuno-histochemistry was used to determine the expression of TIMP-1 on 38 paraffin-embedded breast tissue specimens - 18 with invasive ductal carcinoma, 10 with invasive lobular carcinoma, and 10 specimens from patients with fibrocystic breast disease. TIMP-1 protein was immunodetected in the carcinoma cells, fibroblasts and inflammatory cells of the stroma in 92,9%, 65,8%, and 65,8% of cases, respectively. TIMP-1 protein expression in carcinoma cells showed positive correlation with TIMP-1 protein expression in peritumoural fibroblasts (p=0,010). Positive peritumoural fibroblast TIMP-1 expression was associated with histological tumour type with higher frequency in ductal carcinomas (p=0,023). Negative association was found between TIMP-1 protein expression in carcinoma cells and HER-2/neu nuclear staining (p=0,005). TIMP-1 may be particularly useful as a predictive marker in breast carcinoma when evaluated along with HER-2/neu protein being a promising indicator of favourable prognosis in breast carcinoma.
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Kuskunović S, Radović S, Dorić M, Hukić A, Babić M, Tomić I, Selak I. Immunohistochemical Expression of Tissue Inhibitor of Metalloproteinase-1 (Timp-1) in Invasive Breast Carcinoma. Bosn J of Basic Med Sci [Internet]. 2009May20 [cited 2020Feb.28];9(2):125-30. Available from: https://www.bjbms.org/ojs/index.php/bjbms/article/view/2831