Abstract
Angiogenesis is essential for the development, growth and advancement of solid tumors. Cyclooxygenase (cox)-2 is recognized as an angiogenic factor in various tumors. This prompted us to study the clinical implications of cox-2 expression and angiogenesis in ovarian cancer. There was a significant correlation between microvessel counts and cox-2 levels. Cox-2 localized in the cancer cells, but not in the stromal cells of ovarian cancer tissue. Cox-2 levels increased with the advancement, and the prognosis of the 30 patients with high cox-2 expression was extremely poor (33%), while the 24-month survival rate of the other 30 patients, those with low cox-2 expression, was 67%. Furthermore, cox-2 levels significantly correlated with VEGF levels. VEGF associated with cox-2 might work on angiogenesis with advancement. Therefore, long-term administration of cox-2 inhibitors might be effective on the suppression of regrowth or recurrence after intensive treatment for advanced ovarian cancer.
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