{"paper_id":"d2085cb1-1a1a-44e8-942e-3ffb9fcf9c11","body_text":"Abstract\nResveratrol is a natural phytoestrogen with antiproliferative properties present in red wine, grapes, and berries. Published reports on the effects of resveratrol in human endometrial function are limited. The objective of this study was to investigate the expression of estrogen receptor α (ESR1), Ki-67 (a proliferative marker), aryl hydrocarbon receptor (AhR), and members of the cytochrome P450 superfamily of enzymes (CYP1A1 and CYP1B1) in an in vitro and vivo assay. Alkaline phosphatase assay of estrogenicity was used to compare estrogen activity of different concentrations of resveratrol to estradiol (E2) and diethylstilbestrol (DES), using Ishikawa cell culture. Immunohistochemical expression of ESR1 and Ki67, and reverse transcriptase polymerase chain reaction of AhR, CYP1A1, and CYP1B1 were analyzed from xenograft implants of human endometrial tissue in ovariectomized immunodeficient RAG-2-γ(c) mice, after 30 days of treatment with subcutaneous pellets of E2, E2 plus progesterone (P4), or E2 plus resveratrol (6, 30, or 60 mg) for 30 days. Compared to E2, resveratrol acted as an agonist and antagonist of estrogen in low and high concentrations, respectively, when combined with E2. Xenografts of human endometrial tissues in RAG-2 mice exhibited reduced expression of ESR1 and proliferative activity (Ki67) with 60 mg of resveratrol. This study suggests that resveratrol, at high doses, has the potential benefit to reduce proliferation of human endometrium through ESR1.\nSimilar content being viewed by others\nReferences\nKinghorn AD, Su BN, Jang DS, et al. Natural inhibitors of carcinogenesis. 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Resveratrol and Endometrium: A Closer Look at an Active Ingredient of Red Wine Using In Vivo and In Vitro Models. Reprod. Sci. 21, 1362–1369 (2014). https://doi.org/10.1177/1933719114525271\nPublished:\nIssue date:\nDOI: https://doi.org/10.1177/1933719114525271","source_license":"CC0","license_restricted":false}