JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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Evidence for estrogen synthesis in adenomyotic tissues.

OBJECTIVE: To investigate steroidogenesis in eutopic and ectopic endometrial tissues in adenomyosis.

STUDY DESIGN: Aromatase and estrone sulfatase activities were determined by anion-exchange resin column chromatography, thin-layer chromatography, and cocrystallization. The effects of danazol on the activity of these enzymes were also examined. Moreover, localization of aromatase in eutopic and ectopic endometrial tissues was immunohistochemically examined with antihuman placental aromatase cytochrome P-450 antibody.

RESULTS: Aromatase and estrone sulfatase activities were detected in ectopic endometrium. The activity of these enzymes was significantly suppressed by danazol. In addition, aromatase was immunohistochemically detected in glandular cells of eutopic and ectopic endometrial tissues.

CONCLUSIONS: The results suggest that estrogen is synthesized in the eutopic and ectopic endometrial tissues of women with uterine adenomyosis and that it may affect the growth of adenomyosis. Danazol suppressed synthesis of estrogen in vitro.

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