Polycyclic aromatic hydrocarbons in bays of the Rio de Janeiro state coast, SE - Brazil: Effects on catfishes.

Autor: Freire MM; Post-Graduate Program in Geosciences (Environmental Geochemistry), Chemistry Institute, Fluminense Federal University, 24020-141, Niterói, Brazil., Amorim LMF; Post-Graduate Program in Science and Biotechnology and Post-Graduate Program in Neurosciences, Biology Institute, Fluminense Federal University, Niterói, Brazil., Buch AC; Post-Graduate Program in Geosciences (Environmental Geochemistry), Chemistry Institute, Fluminense Federal University, 24020-141, Niterói, Brazil., Gonçalves AD; Post-Graduate Program in Geosciences (Environmental Geochemistry), Chemistry Institute, Fluminense Federal University, 24020-141, Niterói, Brazil; Analytical Chemistry Department, Chemistry Institute, Federal University of Rio de Janeiro, 21941-909, Rio de Janeiro, Brazil., Sella SM; Post-Graduate Program in Chemistry, Chemistry Institute, Fluminense Federal University, 24020-141, Niterói, Brazil., Cassella RJ; Post-Graduate Program in Chemistry, Chemistry Institute, Fluminense Federal University, 24020-141, Niterói, Brazil., Moreira JC; National School of Public Health, Oswaldo Cruz Foundation, 21041-210, Rio de Janeiro, Brazil., Silva-Filho EV; Post-Graduate Program in Geosciences (Environmental Geochemistry), Chemistry Institute, Fluminense Federal University, 24020-141, Niterói, Brazil. Electronic address: emmanoelvieirasilvafilho@id.uff.br.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2020 Feb; Vol. 181, pp. 108959. Date of Electronic Publication: 2019 Nov 23.
DOI: 10.1016/j.envres.2019.108959
Abstrakt: The Brazilian coast of the Rio de Janeiro State has bays of great economic, ecological and social importance. However, these ecosystems have been suffering intense anthropogenic influence, mainly due to the contamination by polycyclic aromatic hydrocarbons (PAHs) from urban-industrial activities. Moreover, PAHs are organic pollutants of high toxicity and carcinogenicity causing global concern to human and environmental health. This study evaluated on catfish (Genidens genidens) a set of key parameters (sex, morphometric traits, condition factor (K), PAH metabolites in gallbladder, frequency of micronucleus (MN) and erythrocytic nuclear abnormalities (ENA) in blood. In addition we also evaluated histopathological hepatic effects, Ethoxyresorufin-O-deethylase (EROD) activity and Benzo(a)pyrene diol epoxide (BPDE)-DNA adducts) in liver samples, in order to indicate the fish health status and environmental pollution levels of three main Bays (Guanabara, Sepetiba and Ilha Grande) of the Rio de Janeiro State, in the Southeast of Brazil. In general, the worst physical and metabolic conditions in catfishes were evidenced in Guanabara Bay, possibly indicating the highest level of contamination by PAHs. Contrary evidence was observed in Ilha Grande Bay, showing lower biological changes in G. genidens. However in Sepetiba Bay, the influence of PAHs contamination showed the highest hepatic lesions in catfishes, prevailing foci of cellular alterations, megalocytic hepatosis and hydropic vacuolations. The employability of a set of biomarkers on catfish was efficient for screening pollution for PAHs in tropical environments. This reinforces the need for effective actions of monitoring and conservation strategies of bays of the Rio de Janeiro State (Brazil), in order to ensure quality and health to both human and environment.
Competing Interests: Declaration of competing interest We have no conflicts of interest to disclose.
(Copyright © 2019 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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