Semnan University of Medical Sciences

Research and Technology Vice Chancellor

Ghahremanfard, Farahnaz and Alavy Toussy, Jafar and Kazeminezhad, Behrang and Ramezani, Farzaneh (2013) Role of cyclooxygenese-2 (COX-2) expression in breast cancer differentiation and its relationship with hormone receptors status. Iranian Journal of Pathology. pp. 235-240.

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    Background and Objectives: Cyclooxygenese-2 (COX-2) expression in breast cancer and its correlation with tumor prognosis is unclear. We investigated the incidence of COX-2 expression in patients and assessed interactions between COX-2 and clinical features of cancer and expression of HER2/neu, estrogen receptor (ER), and progesterone receptor (PR). Methods: COX-2 expression was investigated by immunohistochemistry in 29 patients’ specimens diagnosed as primary breast cancer between 2006 and 2008 at the Fatemieh Hospital, Semnan, Iran. Relationship between COX-2 expression and age, histological grade, histological type, nodal status, and hormone receptor status were evaluated. Results: We used IHC method although it was not a quantitative study. Its expression depends on quality of antibody, staining and selection of analyzed region. COX-2, HER-2, ER, and PR were detected in 89.7%, 51.7%, 82.8%, and 79.3% of samples, respectively. Elevated COX-2 expression was not associated with size and grade of tumor, while mean numbers of involved lymph nodes was significantly higher in those with elevated expression of COX-2 (P = 0.001). There were no significant correlations between COX-2 expression and HER-2, ER, and PR receptors. Conclusion: Only tumor tissue was analyzed and did not compare to normal tissue. Elevated COX-2 expression can be found in most patients with breast cancer and has a crucial role in tumor differentiation regarding degree of lymph node involvement. It seems that correlation between COX-2 and other oncogens and hormonal receptors might be influenced by geographical and racial factors, so, assessment of these relationships in each patient’s population may be necessary. Keywords: Cyclooxygenase-2, Breast Cancer, Estrogen Receptors, Progesterone Receptor , HER-2 Proto-Oncogene Protein

    Item Type: Article
    Subjects: R Medicine > R Medicine (General)
    Divisions: Faculty of Medical Sciences > School of Medicine
    Depositing User: Mr Vahab Moshtaghi
    Date Deposited: 12 Nov 2016 10:31
    Last Modified: 12 Nov 2016 10:31

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