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Effects of 2,3-Bis(4-hydroxyphenyl)-propionitrile on Induction of Polyovular Follicles in the Mouse Ovary.

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BACKGROUND/AIM Neonatal diethylstilbestrol (DES) treatment induces polyovular follicles (PFs), which contain more than two oocytes in a follicle, through estrogen receptor (ER) β, not ERα. 2,3-Bis(4-hydroxyphenyl)-propionitrile (DPN) is a specific… Click to show full abstract

BACKGROUND/AIM Neonatal diethylstilbestrol (DES) treatment induces polyovular follicles (PFs), which contain more than two oocytes in a follicle, through estrogen receptor (ER) β, not ERα. 2,3-Bis(4-hydroxyphenyl)-propionitrile (DPN) is a specific ERβ agonist; the effects of neonatal DPN exposure on PF induction and gene expression in the mouse ovary were examined. MATERIALS AND METHODS Histological analysis and real-time reverse transcription-polymerase chain reaction were performed. RESULTS The PF incidence was significantly high in the ovary of neonatally DPN-exposed mice compared to that in oil-exposed mice. The gene expression of growth differentiation factor 9 (Gdf9), Mullerian-inhibiting substance, steroidogenic factor 1 (Sf1) and steroidogenic acute regulatory protein (Star) in the ovary was significantly increased in the mice neonatally exposed to 40 μg DPN compared to oil-treated mice. CONCLUSION Since SF1 is an important transcription factor of several genes involved in ovarian function, up-regulation of Sf1 expression by neonatal exposure to DPN, through ERβ, might affect expression of Gdf9, Mis and Star, resulting in increased PFs in mouse ovary.

Keywords: hydroxyphenyl propionitrile; mouse ovary; bis hydroxyphenyl; polyovular follicles

Journal Title: In vivo
Year Published: 2018

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