J Med Assoc Thai 2016; 99 (7):751

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DMPA Suppresses Cell Proliferation and Enhances Cell Apoptosis of Eutopic Endometrium in Women with Endometriosis: A Randomized Controlled Study
Tingthanatikul Y , Tawarasumida Y , Lertvikool S , Wongkularb A Mail, Sophonsritsuk A , Weerakiet S , Sroyraya M , Chansela P , Changklungmoa N , Songkoomkrong S , Poljaroen J , Sobhon P

Background: Although Depo-medroxyprogesterone acetate (DMPA), an injectable contraceptive progestin, is very effective for pain relief and prevention of recurrence in women with endometriosis, there is no report on the mechanism of this medication about cell proliferation and apoptosis.

Objective: To investigate the effects of DMPA on cell proliferation and apoptosis in the eutopic endometrium of women with endometriosis.

Material and Method: A randomized controlled study was conducted in 28 women with endometriosis. The DMPA-treated group included 14 women who were scheduled to undergo laparoscopic surgery after 150 mg of DMPA injections. The control group included 14 women who were scheduled to undergo the surgery without DMPA injection. The endometrial tissue was obtained from each woman by endometrial aspiration before surgery. The ELISA formats of PCNA and the quantitative colorimetric analysis of TUNEL were used for estimating cell proliferation and apoptosis of the eutopic endometrium.

Results: There were no differences in the women characteristics between the two groups. The relative level of cell proliferation was significantly less in the DMPA than the control groups (1.08±0.57 vs. 1.73±0.50, p = 0.014). Whereas the relative level of cell apoptosis was greater in the DMPA group than that in the control group (1.12±0.36 vs. 0.82±0.39, p = 0.034).

Conclusion: Three months of 150 mg DMPA treatment could suppress cell proliferation and enhance cell apoptosis of the eutopic endometrium of women with endometriosis.

Keywords: Apoptosis, Cell proliferation, Depo-medroxyprogesterone, Endometriosis, Eutopic endometrium

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