Multi-biomarker approach and IBR index to evaluate the effects of bisphenol A on embryonic stages of zebrafish (Danio rerio)

Gerardo Heredia-García, Leobardo Manuel Gómez-Oliván, Gustavo Axel Elizalde-Velázquez, Jesús Daniel Cardoso-Vera, José Manuel Orozco-Hernández, Karina Elisa Rosales-Pérez, Sandra García-Medina, Hariz Islas-Flores, Marcela Galar-Martínez, Octavio Dublán-García

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12 Scopus citations

Abstract

This study assessed the effects of Bisphenol A in embryonic stages of zebrafish, applying an IBR multi-biomarker approach that included alterations in growth and oxidative status and relates it with the expression of Nrf1, Nrf2, Wnt3a, Wnt8a, COX-2, Qdpra, and DKK1 genes. For this purpose, we exposed zebrafish embryos to eight environmentally relevant concentrations of BPA (220, 380, 540, 700, 860, 1180, 1340, and 1500 ng L−1) until 96 h post-fertilization. Our results show that BPA induces several malformations in embryos (developmental delay, hypopigmentation, tail malformations, and on), leading to their death. The LC50, EC50 of malformations, and teratogenic index (TI) were 1234.60 ng L−1, 987.77 ng L−1, and 1.25, respectively; thus, this emerging contaminant is teratogenic. Regarding oxidative stress and gene expression, we demonstrated BPA altered oxidative status and the gene expression in embryos of Danio rerio.

Original languageEnglish
Article number103925
JournalEnvironmental Toxicology and Pharmacology
Volume94
DOIs
StatePublished - Aug 2022

Keywords

  • Bisphenol-A
  • Embryotoxicity
  • Oxidative stress, teratogenicity, gene expression, IBR

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