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- W2896792006 abstract "Abstract Triclosan, a widely used antibacterial and antifungal agent, is ubiquitously detected in the natural environment. There is increasing evidence that triclosan can produce cytotoxic, genotoxic, and endocrine disruptor effects in aquatic biota, including algae, crustaceans, and fish. Metabolomics can provide important information regarding molecular‐level effects and toxicity of xenobiotic chemicals in aquatic organisms. The aim of the present study was to assess the toxicity of triclosan in developing zebrafish ( Danio rerio ) embryos using gas chromatography–mass spectrometry (GC–MS)‐based metabolomics. The embryos were exposed to a wide range of triclosan concentrations (10 ng/L–500 µg/L). Endogenous metabolites were extracted using acetonitrile:isopropanol:water (3:3:2, v/v/v). Derivatization of metabolites was performed prior to identification and quantification via GC–MS analysis. A total of 29 metabolites were positively identified in embryos. Univariate (one‐way analysis of variance) and multivariate (principal components analysis and projection to latent structure‐discriminant analysis) analyses were employed to determine metabolic profile changes in triclosan‐exposed embryos. Eight metabolites were significantly altered ( p < 0.05) in embryos exposed to triclosan (urea, citric acid, D‐(+)‐galactose, D‐glucose, stearic acid, L‐proline, phenylalanine, and L‐glutamic acid). The results suggest that triclosan exposure can result in impairment of several pathways in developing zebrafish embryos, with implications for energy metabolism and amino acid metabolism, as well as nitrogen metabolism and gill function. These findings will benefit future risk assessments of triclosan and other contaminants of emerging concern. Environ Toxicol Chem 2019;38:240–249. © 2018 SETAC" @default.
- W2896792006 created "2018-10-26" @default.
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- W2896792006 date "2018-11-30" @default.
- W2896792006 modified "2023-10-07" @default.
- W2896792006 title "Metabolomic profiling of zebrafish ( <i>Danio rerio</i> ) embryos exposed to the antibacterial agent triclosan" @default.
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- W2896792006 doi "https://doi.org/10.1002/etc.4292" @default.
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