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Full-Text Articles in Pharmacology, Toxicology and Environmental Health
Developmental Exposures To Pfas Mixtures Impair Elongation Of The Exocrine Pancreas In Zebrafish (Danio Rerio), Emily M. Formato
Developmental Exposures To Pfas Mixtures Impair Elongation Of The Exocrine Pancreas In Zebrafish (Danio Rerio), Emily M. Formato
Masters Theses
Poly- and perfluoroalkyl substances (PFAS) are a class of bioaccumulative toxicants used in numerous industrial and commercial products. Perfluorooctanesulfonic acid (PFOS) alters pancreatic organogenesis during development, and perfluorohexanesulfonic acid (PFHxS) has been suggested as a replacement for PFOS due to its shorter carbon chain, but they are often found together in surfactants, such as legacy aqueous film-forming foam. This study investigates how developmental exposures to a PFAS mixture (PFHxS + PFOS) impact the developing exocrine pancreas. Zebrafish embryos (Tg(ptf1a:GFP)) were exposed to 0.01% DMSO, or 8, 16, 32 μM PFHxS alone, 16 μM PFOS alone, and 8, 16, and 32 …
Redox Signaling In The Zebrafish Embryo And Implications For Endocrine Pancreas Morphogenesis, Archit Rastogi
Redox Signaling In The Zebrafish Embryo And Implications For Endocrine Pancreas Morphogenesis, Archit Rastogi
Doctoral Dissertations
The glutathione (GSH) system evolved to combat oxygen toxicity in nearly all living organisms, and serves as the predominant cellular redox buffer in vertebrates. This dissertation explores the roles of GSH during embryogenesis using the zebrafish (Danio rerio). The first agnostic in vivo characterization of GSH utilization in the embryo revealed strict spatiotemporal GSH profiles in developing organ systems. Interruption of these GSH profiles by exogenous xenobiotics led to organ specific adverse developmental outcomes; pancreatic β-cells were found to be especially susceptible and developed atypical morphologies following redox active xenobiotic exposures. Pancreatic β-cells lacked expression of Nrf2a (Nuclear …