COX-1 and COX-2 expression in stage I and II invasive cervical carcinoma: relationship to disease relapse and long-term survival |
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Authors: | R. ATHAVALE,K. CLOONEY&dagger ,J. O'HAGAN&Dagger ,H. SHAWKI§ ,A.H. CLARK ,& J.A. GREEN¶ |
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Affiliation: | Department of Gynaecological Oncology, Queen Elizabeth Hospital, Sheriff Hill, Gateshead, UK. rathavale@yahoo.com |
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Abstract: | COX-1 and COX-2 are members of the cyclooxygenase (COX) family, which influence tumor invasion and apoptosis. The objective of the study was to assess the relationship between COX-1 and COX-2 expression in early-stage disease and subsequent disease relapse and long-term survival. Women with FIGO stage I and II cervical carcinoma, younger than 50 years, treated between 1981 and 1990 were included. COX-1 and COX-2 expressions in the tumors were assessed by immunohistochemistry. COX-1 and COX-2 were expressed in 61% (17/28) and 57% (16/28) of tumors, respectively. COX-1 nonexpressers showed an improved overall survival compared to expressers (log-rank test, P= 0.09). There was no significant difference in the overall survival in COX-2 nonexpressers compared to expressers (P= 0.6). Out of eight women with disease relapse, COX-1 or COX-2 expression was noted in six of eight tumors, and both were expressed in five of eight tumors. Our preliminary data suggest an adverse prognosis with COX-1 expression in early-stage cervical carcinoma and a trend toward COX-1 expression in disease relapse. The association between COX-2 expression and a worse prognosis was not proven in this study. |
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Keywords: | cervical carcinoma COX-1 COX-2 |
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