Abstract
BackgroundAngiogenesis is essential for 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 uterine endometrial cancers. Patients and methodsFifty patients underwent curative resection for uterine endometrial cancers. In uterine endometrial cancers, cox-2 levels were determined by enzyme immunoassay, and the localization and counts of microvessels were determined by immunohistochemistry. ResultsThere was a significant correlation between microvessel counts and cox-2 levels in uterine endometrial cancers. Cox-2 localized in the cancer cells, but not in the stromal cells of uterine endometrial cancer tissues. Cox-2 levels decreased with the advancement. Furthermore, cox-2 levels significantly correlated with VEGF levels in uterine endometrial cancers. ConclusionsVEGF associated with cox-2 might work on angiogenesis at an early status in growth. Therefore, long-term administration of cox-2 inhibitors might be effective in the suppression of recurrent initiation of uterine endometrial cancers after curative resection.
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