In vitro effect of danazol on endometrioma cells in culture.

OBJECTIVE: To evaluate the effect of danazol on endometrioma cells in culture, in relation to cell proliferation. STUDY DESIGN: Danazol has been shown to be effective in treating endometriosis, leading to remission. The mode of action is through suppression of gonadotropins. A direct effect on endometriosis implants has been suggested. This study was conducted on endometrioma cell lines using various concentrations of danazol in ethanol solution. RESULTS: Danazol showed a decrease in proliferation of endometrioma cells in culture. This was also associated with an increase in apoptosis and necrosis of cultured cells. CONCLUSION: This study demonstrates the direct effect of danazol on endometrioma cells in culture.