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• W2072484890 abstract "Humans are ubiquitously exposed to di(2-ethylhexyl) phthalate (DEHP), which is an environmental toxicant present in common consumer products. DEHP potentially targets the ovary through its metabolite mono(2-ethylhexyl) phthalate (MEHP). However, the direct effects of MEHP on ovarian folliculogenesis and steroidogenesis, two processes essential for reproductive and nonreproductive health, are unknown. The present study tested the hypotheses that MEHP directly accelerates early folliculogenesis via overactivation of phosphatidylinositol 3-kinase (PI3K) signaling, a pathway that regulates primordial follicle quiescence and activation, and inhibits the synthesis of steroid hormones by decreasing steroidogenic enzyme levels. Neonatal ovaries from CD-1 mice were cultured for 6 days with vehicle control, DEHP, or MEHP (0.2–20 μg/ml) to assess the direct effects on folliculogenesis and PI3K signaling. Further, antral follicles from adult CD-1 mice were cultured with vehicle control or MEHP (0.1–10 μg/ml) for 24–96 h to establish the temporal effects of MEHP on steroid hormones and steroidogenic enzymes. In the neonatal ovaries, MEHP, but not DEHP, decreased phosphatase and tensin homolog levels and increased phosphorylated protein kinase B levels, leading to a decrease in the percentage of germ cells and an increase in the percentage of primary follicles. In the antral follicles, MEHP decreased the mRNA levels of 17alpha-hydroxylase-17,20-desmolase, 17beta-hydroxysteroid dehydrogenase, and aromatase leading to a decrease in testosterone, estrone, and estradiol levels. Collectively, MEHP mediates the effect of DEHP on accelerated folliculogenesis via overactivating PI3K signaling and inhibits steroidogenesis by decreasing steroidogenic enzyme levels." @default.
• W2072484890 created "2016-06-24" @default.
• W2072484890 creator A5003767997 @default.
• W2072484890 creator A5020360731 @default.
• W2072484890 creator A5040949438 @default.
• W2072484890 creator A5083966624 @default.
• W2072484890 date "2015-05-01" @default.
• W2072484890 modified "2023-10-02" @default.
• W2072484890 title "Mono(2-Ethylhexyl) Phthalate Accelerates Early Folliculogenesis and Inhibits Steroidogenesis in Cultured Mouse Whole Ovaries and Antral Follicles1" @default.
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• W2072484890 doi "https://doi.org/10.1095/biolreprod.115.129148" @default.
• W2072484890 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4645979" @default.
• W2072484890 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25810477" @default.
• W2072484890 hasPublicationYear "2015" @default.
• W2072484890 type Work @default.
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