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  • Title: Short-term effects of danazol and medroxyprogesterone acetate on cytosol and nuclear estrogen and progestin receptors, 17 beta-hydroxysteroid dehydrogenase activity, histopathology, and ultrastructure of human endometrial adenocarcinoma.
    Author: Kauppila A, Isotalo H, Kivinen S, Stenbäck F, Vihko R.
    Journal: Int J Cancer; 1985 Feb 15; 35(2):157-63. PubMed ID: 3156097.
    Abstract:
    We measured concentrations of cytosol and nuclear estrogen, as well as progestin receptors and activities of 17 beta-hydroxysteroid dehydrogenase (17-HSD), and examined histopathology and ultrastructure of endometrial carcinoma specimens taken before and after one-week danazol (200 mg, 3 times daily) or medroxyprogesterone acetate (MPA, 100 mg daily) treatments in 14 and 16 patients, respectively. A typical progestin effect, a significant increase in the activity of 17-HSD, was observed after both treatments. The post-therapy 17-HSD activities correlated significantly with the pretreatment cytosol progestin receptor concentrations in both treatment groups. Both MPA and danazol decreased the proliferative activity and increased the secretory activity of the malignant epithelial endometrial cells. These biochemical and morphological results support the concept that danazol has progestin-like actions on the human endometrium, and might therefore be an alternative for hormonal treatment of endometrial carcinoma.
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