Oxidative stress response induced by Atrazine in Palaemonetes argentinus: the protective effect of Vitamin E

GRIBOFF J; MORALES D.; BERTRAND L.; BONANSEA, R.; MONFERRÁN, M.V.; ASIS, R.; WUNDERLIN,D.A.; AMÉ, M.V.

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY

ACADEMIC PRESS INC ELSEVIER SCIENCE

Lugar: Amsterdam; Año: 2014

0147-6513

he widespread contamination and persistence of the herbicide atrazine residues in the environment resulted in the exposure of non-target organisms. The present study was undertaken to investigate the effect of atrazine in the response of oxidative stress biomarkers in the freshwater shrimp Palaemonetes argentinus and the protective effect of vitamin-E against atrazine-induced toxicity. Therefore, two batches of P.argentinus were fed for 21 days with a commercial food enriched in proteins (D1) or with D2, composed of D1 enriched with vitamin-E (6.8 and 16.0 mg% of vitamin-E, respectively). Subsequently, half of individuals of each group were exposed to atrazine (0.4 mg L-1) for 24 h and the others remained as controls. Atrazine promoted oxidative stress response in P.argentinus fed with D1 as indicated by enhanced H2O2 content and induction of superoxide dismutase, glutathione-S-transferases and glutathione reductase. This antioxidant activity would prevent the increment of thiobarb