@article{schkoda_horman_witchey_jansson_macari_patisaul_2023, title={Skeletal effects following developmental flame-retardant exposure are specific to sex and chemical class in the adult Wistar rat}, volume={5}, ISSN={["2673-3080"]}, DOI={10.3389/ftox.2023.1216388}, abstractNote={Introduction: Accumulating evidence reveals that endocrine disrupting chemicals (EDCs) can disrupt aspects of metabolic programming, suggesting that skeletal development may be at risk, a possibility that is rarely examined. The commercial flame retardant (FR) mixture, Firemaster 550 (FM 550), has repeatedly been shown to negatively influence metabolic programming, raising concerns that skeletal integrity may consequently be impaired. We have previously shown that gestational and lactational exposure to 1,000 µg FM 550 negatively affected sex-specific skeletal traits in male, but not female, rats assessed at 6 months of age. Whether this outcome is primarily driven by the brominated (BFR) or organophosphate ester (OPFR) portions of the mixture or the effects persist to older ages is unknown.}, journal={FRONTIERS IN TOXICOLOGY}, author={Schkoda, Stacy and Horman, Brian and Witchey, Shannah K. and Jansson, Anton and Macari, Soraia and Patisaul, Heather B.}, year={2023}, month={Jul} } @article{kassotis_lefauve_chiang_knuth_schkoda_kullman_2022, title={Nonylphenol Polyethoxylates Enhance Adipose Deposition in Developmentally Exposed Zebrafish}, volume={10}, DOI={10.3390/toxics10020099}, abstractNote={Alkylphenol polyethoxylates (APEOs), such as nonylphenol ethoxylates (NPEOs), are high-production-volume surfactants used in laundry detergents, hard-surface cleaners, pesticide formulations, textile production, oils, paints, and other products. NPEOs comprise −80% of the total production of APEOs and are widely reported across diverse environmental matrices. Despite a growing push for replacement products, APEOs continue to be released into the environment through wastewater at significant levels. Research into related nonionic surfactants from varying sources has reported metabolic health impacts, and we have previously demonstrated that diverse APEOs and alcohol polyethoxylates promote adipogenesis in the murine 3T3-L1 pre-adipocyte model. These effects appeared to be independent of the base alkylphenol and related to the ethoxylate chain length, though limited research has evaluated NPEO exposures in animal models. The goals of this study were to assess the potential of NPEOs to promote adiposity (Nile red fluorescence quantification) and alter growth and/or development (toxicity, length, weight, and energy expenditure) of developmentally exposed zebrafish (Danio rerio). We also sought to expand our understanding of the ability to promote adiposity through evaluation in human mesenchymal stem cells. Herein, we demonstrated consistent adipogenic effects in two separate human bone-marrow-derived mesenchymal stem cell models, and that nonylphenol and its ethoxylates promoted weight gain and increased adipose deposition in developmentally exposed zebrafish. Notably, across both cell and zebrafish models we report increasing adipogenic/obesogenic activity with increasing ethoxylate chain lengths up to maximums around NPEO-6 and then decreasing activity with the longest ethoxylate chain lengths. This research suggests metabolic health concerns for these common obesogens, suggesting further need to assess molecular mechanisms and better characterize environmental concentrations for human health risk assessments.}, number={2}, journal={Toxics}, author={Kassotis, Christopher D. and LeFauve, Matthew K. and Chiang, Yu-Ting Tiffany and Knuth, Megan M. and Schkoda, Stacy and Kullman, Seth W.}, year={2022}, month={Feb}, pages={99} } @article{kassotis_lefauve_chiang_knuth_schkoda_kullman_2022, title={Nonylphenol Polyethoxylates Enhance Adipose Deposition in Developmentally Exposed Zebrafish (vol 10, 99, 2022)}, volume={10}, ISSN={["2305-6304"]}, DOI={10.3390/toxics10070345}, abstractNote={In the original publication [...]}, number={7}, journal={TOXICS}, author={Kassotis, Christopher D. and LeFauve, Matthew K. and Chiang, Yu-Ting Tiffany and Knuth, Megan M. and Schkoda, Stacy and Kullman, Seth W.}, year={2022}, month={Jul} }