The developing zebrafish kidney is impaired by Deepwater Horizon crude oil early-life stage exposure: A molecular to whole-organism perspective.

Autor: Bonatesta F; Department of Biological Sciences and the Advanced Environmental Research Institute, University of North Texas, Denton, TX, USA. Electronic address: fabriziobonatesta@my.unt.edu., Emadi C; Department of Biological Sciences and the Advanced Environmental Research Institute, University of North Texas, Denton, TX, USA., Price ER; Department of Biological Sciences and the Advanced Environmental Research Institute, University of North Texas, Denton, TX, USA., Wang Y; Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA., Greer JB; Western Fisheries Research Center, United States Geological Survey, Seattle, WA, USA., Xu EG; Department of Biology, University of Southern Denmark, Odense, Denmark., Schlenk D; Department of Environmental Sciences, University of California, Riverside, CA, USA., Grosell M; Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, USA., Mager EM; Department of Biological Sciences and the Advanced Environmental Research Institute, University of North Texas, Denton, TX, USA.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2022 Feb 20; Vol. 808, pp. 151988. Date of Electronic Publication: 2021 Nov 26.
DOI: 10.1016/j.scitotenv.2021.151988
Abstrakt: Crude oil is known to induce developmental defects in teleost fish exposed during early life stages (ELSs). While most studies in recent years have focused on cardiac endpoints, evidence from whole-animal transcriptomic analyses and studies with individual polycyclic aromatic hydrocarbons (PAHs) indicate that the developing kidney (i.e., pronephros) is also at risk. Considering the role of the pronephros in osmoregulation, and the common observance of edema in oil-exposed ELS fish, surprisingly little is known regarding the effects of oil exposure on pronephros development and function. Using zebrafish (Danio rerio) ELSs, we assessed the transcriptional and morphological responses to two dilutions of high-energy water accommodated fractions (HEWAF) of oil from the Deepwater Horizon oil spill using a combination of qPCR and whole-mount in situ hybridization (WM-ISH) of candidate genes involved in pronephros development and function, and immunohistochemistry (WM-IHC). To assess potential functional impacts on the pronephros, three 24 h osmotic challenges (2 hypo-osmotic, 1 near iso-osmotic) were implemented at two developmental time points (48 and 96 h post fertilization; hpf) following exposure to HEWAF. Changes in transcript expression level and location specific to different regions of the pronephros were observed by qPCR and WM-ISH. Further, pronephros morphology was altered in crude oil exposed larvae, characterized by failed glomerulus and neck segment formation, and straightening of the pronephric tubules. The osmotic challenges at 96 hpf greatly exacerbated edema in both HEWAF-exposed groups regardless of osmolarity. By contrast, larvae at 48 hpf exhibited no edema prior to the osmotic challenge, but previous HEWAF exposure elicited a concentration-response increase in edema at hypo-osmotic conditions that appeared to have been largely alleviated under near iso-osmotic conditions. In summary, ELS HEWAF exposure impaired proper pronephros development in zebrafish, which coupled with cardiotoxic effects, most likely reduced or inhibited pronephros fluid clearance capacity and increased edema formation.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2021 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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