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Synergistic Induction Of Ahr Regulated Genes In Developmental Toxicity From Co-Exposure To Two Model Pahs In Zebrafish, Alicia R. Timme-Laragy, Crystal J. Cockman, Cole W. Matson, Richard T. Di Giulio

Alicia R. Timme-Laragy

Polycyclic aromatic hydrocarbons (PAHs) are pollutants created by the incomplete combustion of carbon, and are increasing in the environment largely due to the burning of fossil fuels. PAHs occur as complex mixtures, and some combinations have been shown to cause synergistic developmental toxicity in fish embryos, characterized by pericardial edema and craniofacial malformations. Previous studies have indicated that in the zebrafish model, this toxicity is mediated by the aryl hydrocarbon receptor 2 (AHR2), and enhanced by inhibition of CYP1A activity. In this study, we further examined this interaction of the model PAH and AHR agonist beta-naphthoflavone (BNF) with and without …