Search Results - "Hartig, Phillip"
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Occurrence and In Vitro Bioactivity of Estrogen, Androgen, and Glucocorticoid Compounds in a Nationwide Screen of United States Stream Waters
Published in Environmental science & technology (02-05-2017)“…In vitro bioassays are sensitive, effect-based tools used to quantitatively screen for chemicals with nuclear receptor activity in environmental samples. We…”
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Adverse Maternal, Fetal, and Postnatal Effects of Hexafluoropropylene Oxide Dimer Acid (GenX) from Oral Gestational Exposure in Sprague-Dawley Rats
Published in Environmental health perspectives (01-03-2019)“…Hexafluoropropylene oxide dimer acid [(HFPO-DA), GenX] is a member of the per- and polyfluoroalkyl substances (PFAS) chemical class, and elevated levels of…”
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Screening the ToxCast Phase 1 Chemical Library for Inhibition of Deiodinase Type 1 Activity
Published in Toxicological sciences (01-04-2018)“…Abstract Thyroid hormone (TH) homeostasis is dependent upon coordination of multiple key events including iodide uptake, hormone synthesis, metabolism, and…”
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Screening the ToxCast Phase 1, Phase 2, and e1k Chemical Libraries for Inhibitors of Iodothyronine Deiodinases
Published in Toxicological sciences (01-04-2019)“…Abstract Deiodinase enzymes play an essential role in converting thyroid hormones between active and inactive forms by deiodinating the pro-hormone thyroxine…”
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Fifteen Years after “Wingspread”—Environmental Endocrine Disrupters and Human and Wildlife Health: Where We are Today and Where We Need to Go
Published in Toxicological sciences (01-10-2008)“…In 1991, a group of expert scientists at a Wingspread work session on endocrine-disrupting chemicals (EDCs) concluded that “Many compounds introduced into the…”
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In vitro screening of per- and polyfluorinated substances (PFAS) for interference with seven thyroid hormone system targets across nine assays
Published in Toxicology in vitro (01-03-2024)“…The US Environmental Protection Agency is evaluating the ecological and toxicological effects of per- and polyfluorinated chemicals. A number of perfluorinated…”
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In vitro screening for chemical inhibition of the iodide recycling enzyme, iodotyrosine deiodinase
Published in Toxicology in vitro (01-03-2021)“…The iodide recycling enzyme, iodotyrosine deiodinase (IYD), is a largely unstudied molecular mechanism through which environmental chemicals can potentially…”
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De Facto Water Reuse: Bioassay suite approach delivers depth and breadth in endocrine active compound detection
Published in The Science of the total environment (10-01-2020)“…[Display omitted] •A suite of in vitro assays was applied to detect biological activity.•Estrogenic and glucocorticoid activity in effluent was corroborated by…”
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Generalized Concentration Addition Model Predicts Glucocorticoid Activity Bioassay Responses to Environmentally Detected Receptor-Ligand Mixtures
Published in Toxicological sciences (01-03-2019)“…Abstract Many glucocorticoid receptor (GR) agonists have been detected in waste and surface waters domestically and around the world, but the way a mixture of…”
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Xenopus laevis and human type 3 iodothyronine deiodinase enzyme cross-species sensitivity to inhibition by ToxCast chemicals
Published in Toxicology in vitro (01-06-2021)“…Deiodinase enzymes are critical for tissue-specific and temporal control of activation or inactivation of thyroid hormones during vertebrate development,…”
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Pilot-scale expanded assessment of inorganic and organic tapwater exposures and predicted effects in Puerto Rico, USA
Published in The Science of the total environment (20-09-2021)“…A pilot-scale expanded target assessment of mixtures of inorganic and organic contaminants in point-of-consumption drinking water (tapwater, TW) was conducted…”
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In vitro effects-based method and water quality screening model for use in pre- and post-distribution treated waters
Published in The Science of the total environment (10-05-2021)“…Recent urban public water supply contamination events emphasize the importance of screening treated drinking water quality after distribution. In vitro…”
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A Conflicted Tale of Two Novel AR Antagonists In Vitro and In Vivo: Pyrifluquinazon Versus Bisphenol C
Published in Toxicological sciences (01-04-2019)“…Abstract Chemicals that disrupt androgen receptor (AR) function in utero induce a cascade of adverse effects in male rats including reduced anogenital…”
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Identification of metabolites of trenbolone acetate in androgenic runoff from a beef feedlot
Published in Environmental health perspectives (01-04-2006)“…Little is known concerning the potential ecological effects of hormonally active substances associated with discharges from animal feeding operations…”
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Quantification of the Uncertainties in Extrapolating From In Vitro Androgen Receptor Antagonism to In Vivo Hershberger Assay Endpoints and Adverse Reproductive Development in Male Rats
Published in Toxicological sciences (01-08-2020)“…Abstract Multiple molecular initiating events exist that disrupt male sexual differentiation in utero including androgen receptor (AR) antagonism and…”
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Effects of the androgenic growth promoter 17-β-trenbolone on fecundity and reproductive endocrinology of the fathead minnow
Published in Environmental toxicology and chemistry (01-06-2003)“…Trenbolone acetate is a synthetic steroid that is extensively used in the United States as a growth promoter in beef cattle. The acetate is administered to…”
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Competitive binding comparison of endocrine-disrupting compounds to recombinant androgen receptor from fathead minnow, rainbow trout, and human
Published in Environmental toxicology and chemistry (01-09-2007)“…Typically, in vitro hazard assessments for the identification of endocrine‐disrupting compounds (EDCs), including those outlined in the Endocrine Disruptor…”
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Public and private tapwater: Comparative analysis of contaminant exposure and potential risk, Cape Cod, Massachusetts, USA
Published in Environment international (01-07-2021)“…•Lack of comparable private/public tapwater (TW) data undermines decision-making.•TW (10 private, 10 public), with same groundwater source, compared at Cape…”
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Comparison of Chemical Binding to Recombinant Fathead Minnow and Human Estrogen Receptors Alpha in Whole Cell and Cell-free Binding Assays
Published in Environmental toxicology and chemistry (01-10-2009)“…Mammalian receptors and assay systems are generally used for in vitro screening of endocrine-disrupting chemicals with the assumption that minor differences in…”
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Cumulative and Antagonistic Effects of a Mixture of the Antiandrogens Vinclozolin and Iprodione in the Pubertal Male Rat
Published in Toxicological sciences (01-09-2009)“…Vinclozolin and iprodione are dicarboximide fungicides that display antiandrogenic effects in the male rat, which suggests that a mixture would lead to…”
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