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- W4362459021 endingPage "108380" @default.
- W4362459021 startingPage "108380" @default.
- W4362459021 abstract "Ovarian cells are critical for reproduction and steroidogenesis, which are functions that can be impacted by exposure to xenobiotics. As in other extra-hepatic tissues, biotransformation events may occur at the ovarian level. Such metabolic events deserve interest, notably as they may modulate the overall exposure and toxicity of xenobiotics. In this study, the comparative metabolic fate of two bisphenols was investigated in ovarian cells. Bisphenol A (BPA), a model endocrine disruptor, and its major substitute bisphenol S (BPS) were selected. Bovine granulosa cells (primary cultures) and theca explants (ex vivo tissue) were exposed for 24 hr to tritium-labeled BPA, BPS and their respective glucuronides (i.e. their major circulating forms), at concentrations consistent with low-dose exposure scenarios. Mass balance studies were performed, followed by radio-HPLC profiling. The capability of both cell compartments to biotransform BPA and BPS into their respective sulfo-conjugates was demonstrated, with sulfation being the predominant metabolic route. In theca, there was a significantly higher persistence of BPA (compared to BPS) residues over 24 hr. Moreover, only theca explants were able to deconjugate inactive BPA-glucuronide and BPS-glucuronide back into their biologically active aglycone forms. Deconjugation rates were demonstrated to be higher for BPS-G than for BPA-G. These findings raise concerns about the in situ direct release of bisphenols at the level of the ovary and demonstrate the relevance of exploring the biotransformation of bisphenols and their circulating metabolites in different ovarian cells with specific metabolic capabilities. This work also provides essential knowledge for the improved risk assessment of bisphenols." @default.
- W4362459021 created "2023-04-05" @default.
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- W4362459021 date "2023-06-01" @default.
- W4362459021 modified "2023-09-30" @default.
- W4362459021 title "The fate of bisphenol A, bisphenol S, and their respective glucuronide metabolites in ovarian cells" @default.
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- W4362459021 doi "https://doi.org/10.1016/j.reprotox.2023.108380" @default.
- W4362459021 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37003567" @default.
- W4362459021 hasPublicationYear "2023" @default.
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