Redox dysregulation and bioaccumulation of copper in tilapia Oreocromis niloticus

Autor(es)

de Carvalho, Solange ^[1] ; Tavarez Ranzani Paiva, Maria Jose ^[2] ; de Franca, Jakeline Galvao ^[1] ; Neto, Francisco Filipak ^[3] ; de Oliveira Ribeiro, Ciro Alberto ^[3] ; Lombardi, Julio Vicente ^[2]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, Aquaculture Ctr, Jaboticabal, SP - Brazil

^[2] Fisheries Inst APTA SAA SP, Sao Paulo - Brazil

^[3] Univ Fed Parana, Cell Toxicol Lab, Curitiba, PR - Brazil

• Tipo de documento: Artigo Científico
• Fonte: AQUACULTURE RESEARCH; v. 45, n. 4, p. 736-741, MAR 2014.
• Citações Web of Science: 0

Resumo

The objective of this study was to evaluate the effect of two concentrations of copper (0.13 and 0.5mgL(-1)) on juveniles of tilapia, Oreocromis niloticus (Linnaeus), using two toxicological assays (I- copper exposure and II- copper exposure followed by recovery). Doses were taken from the liver of the test organisms to determine the concentrations of copper, reduced glutathione, activities of glutathione S-transferase and catalase, and lipid peroxidation. Exposure to copper in both assays resulted in significant accumulation of this metal in the analysed tissue and in decreased concentration of reduced glutathione. There was no alteration in the activities of catalase and glutathione S-transferase and in lipid peroxidation. (AU)

• Processo FAPESP: 06/50281-2 - Ensaios sobre a toxicidade cronica do sulfato de cobre para a tilapia, oreochromis niloticus e teste ecotoxicologico com ceriodaphnia dubia.
• Beneficiário: Solange de Carvalho
• Modalidade de apoio: Bolsas no Brasil - Doutorado