1. Integrated use of antioxidant enzymes and oxidative damage in two fish species to assess pollution in man-made hydroelectric reservoirs.
- Author
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Sakuragui MM, Paulino MG, Pereira CD, Carvalho CS, Sadauskas-Henrique H, and Fernandes MN
- Subjects
- Animals, Brazil, Fishes, Gills drug effects, Gills enzymology, Glutathione Peroxidase metabolism, Hydrocarbons, Chlorinated toxicity, Lipid Peroxidation drug effects, Liver drug effects, Liver enzymology, Metallothionein metabolism, Oxidative Stress physiology, Power Plants, Superoxide Dismutase metabolism, Environmental Monitoring methods, Water Pollutants, Chemical toxicity
- 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., (Copyright © 2013 Elsevier Ltd. All rights reserved.)
- Published
- 2013
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