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- W2034706174 abstract "Endometriosis is a common estrogen-dependent gynecological disease. In patients with endometriosis estradiol can be synthesized locally in the endometriotic lesions from inactive precursors of adrenal or ovarian origin, via the aromatase pathway. These increased estradiol levels stimulate proliferation of endometriotic tissue. The progestins have been used in the therapy of endometriosis for more than 40 years but their pharmacological action is still not understood in detail. In the present study we therefore aimed to evaluate the effects of three progestins most commonly used in the therapy of endometriosis; medroxyprogesterone acetate, dydrogesterone and dienogest on expression of all genes encoding enzymes of the aromatase pathway and estrogen receptors in the Z-12 model epithelial cell line of peritoneal endometriosis, by qPCR and Western blotting. Our results show that application of medroxyprogestrone acetate, dydrogesterone and dienogest significantly decreases HSD17B1 and CYP19A1 expression and significantly increases HSD17B2 expression. Dydrogesterone and dienogest also significantly suppress ESR1 and ESR2 transcription, whereas medroxyprogestrone acetate and dydrogesterone significantly reduce mRNA levels of GPER. Our results thus suggest that in peritoneal endometriosis the beneficial effects of these progestins can be explained by lower HSD17B1 and higher HSD17B2 mRNA and protein levels, which lead to reduced local E2 biosynthesis. Although progestins significantly decrease CYP19A1 mRNA levels, the protein itself was not detectable by Western blotting. As progestins down-regulate expression of ESR1, ESR2 and GPER, they might also prevent E2-mediated proliferation." @default.
- W2034706174 created "2016-06-24" @default.
- W2034706174 creator A5006745520 @default.
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- W2034706174 date "2012-11-01" @default.
- W2034706174 modified "2023-09-25" @default.
- W2034706174 title "Effects of progestins on local estradiol biosynthesis and action in the Z-12 endometriotic epithelial cell line" @default.
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- W2034706174 doi "https://doi.org/10.1016/j.jsbmb.2012.07.004" @default.
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