Integrated use of antioxidant enzymes and oxidative damage in two fish species to assess pollution in man-made hydroelectric reservoirs

Integrated use of antioxidant enzymes and oxidative damage in two fish species to assess pollution in man-made hydroelectric reservoirs

Author Sakuragui, M. M. Google Scholar
Paulino, M. G. Google Scholar
Pereira, Camilo Dias Seabra Autor UNIFESP Google Scholar
Carvalho, C. S. Google Scholar
Sadauskas-Henrique, H. Google Scholar
Fernandes, M. N. Google Scholar
Institution Universidade Federal de São Carlos (UFSCar)
Universidade Federal de São Paulo (UNIFESP)
Univ Santa Cecilia
Abstract This study investigated the relationship between contaminant body burden and the oxidative stress status of the gills and livers of two wild fish species in the Furnas Hydroelectric Power Station (HPS) reservoir (Minas Gerais, Brazil). Gills and livers presented similar pathways of metals and organochlorine bioaccumulation. During June, organochlorines were associated with lipid peroxidation (LPO), indicating oxidative stress due to the inhibition of the antioxidant enzymes superoxide dismutase and glutathione peroxidase. in the most polluted areas, metal concentrations in the liver were associated with metallothionein. During December, contaminants in the gills and liver were associated with catalase activity and LPO. Aldrin/dieldrin was the contaminant most associated with oxidative damage in the livers of both species. This integrated approach shed light on the relationship between adverse biological effects and bioaccumulation of contaminants inputted by intensive agricultural practices and proved to be a suitable tool for assessing the environmental quality of man-made reservoirs. (C) 2013 Elsevier B.V. All rights reserved.
Keywords Gills
Liver
Metals
Metallothionein
Organochlorine
Oxidative stress
Teleost
Language English
Sponsor P&D ANEEL PROGRAM of the Furnas Centrais Eletricas S.A.
FURNAS Centrais Eletricas S.A.
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Grant number P&D ANEEL PROGRAM of the Furnas Centrais Eletricas S.A.: 0394-097-2003
Date 2013-07-01
Published in Environmental Pollution. Oxford: Elsevier B.V., v. 178, p. 41-51, 2013.
ISSN 0269-7491 (Sherpa/Romeo, impact factor)
Publisher Elsevier B.V.
Extent 41-51
Origin http://dx.doi.org/10.1016/j.envpol.2013.02.032
Access rights Closed access
Type Article
Web of Science ID WOS:000320487700006
URI http://repositorio.unifesp.br/handle/11600/36480

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