Chromium accumulation and biomarker responses in the Neotropical fish Prochilodus lineatus caged in a river under the influence of tannery activities.

Autor: Lunardelli B; Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina, C.P. 10011, CEP: 86057-970 Londrina, Paraná, Brasil., Cabral MT; Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina, C.P. 10011, CEP: 86057-970 Londrina, Paraná, Brasil., Vieira CED; Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina, C.P. 10011, CEP: 86057-970 Londrina, Paraná, Brasil., Oliveira LF; Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina, C.P. 10011, CEP: 86057-970 Londrina, Paraná, Brasil., Risso WE; Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina, C.P. 10011, CEP: 86057-970 Londrina, Paraná, Brasil., Meletti PC; Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina, C.P. 10011, CEP: 86057-970 Londrina, Paraná, Brasil., Martinez CBR; Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina, C.P. 10011, CEP: 86057-970 Londrina, Paraná, Brasil. Electronic address: cbueno@uel.br.
Jazyk: angličtina
Zdroj: Ecotoxicology and environmental safety [Ecotoxicol Environ Saf] 2018 May 30; Vol. 153, pp. 188-194. Date of Electronic Publication: 2018 Feb 10.
DOI: 10.1016/j.ecoenv.2018.02.023
Abstrakt: In order to assess the effects of tannery effluents (TE) in organism health, juveniles of Prochilodus lineatus were submitted to in situ tests at four different river locations: site A - upstream of the tannery; site B - next to the tannery; and sites C and D - downstream of the tannery. After 96 h exposure in the river, samples of fish tissue, river water and sediment were collected in order to quantify chromium (Cr) concentrations. Tissue samples were used to assess the activity of ethoxyresorufin-O-deethylase (EROD) and glutathione S-transferase (GST), the content of glutathione (GSH) and metallothionein (MT) and the occurrence of lipid peroxidation (LPO) and DNA damage. Higher Cr concentrations were detected in the water and sediments from site B and in the liver of fish confined at site B, compared to the other sites. Fish caged at site B demonstrated higher levels of liver MT and hepatic EROD activity in relation to fish caged at the other sites. Moreover, fish from site B presented increased liver and branchial GST activities, as well as more GSH in the liver, than fish from site A. There were no significant variations in the occurrence of LPO and DNA damage among fish caged at the different sites. Thus, TE increased Cr levels in the water, sediments, and fish livers and stimulated the synthesis of MT and GSH and the activities of EROD and GST. In conclusion, TE affect the quality of the river and promote changes in biochemical biomarkers and Cr accumulation in P. lineatus.
(Copyright © 2018 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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