Ventura EC ; Gaelzer LR ; Zanette J ; Marques MR ; Bainy AC ;

Marine Environmental Research vol. 54 (3-5)   pp. 775-9, 2002

Depto Bioquimica, CCB, Universidade Federal de Santa Catarina, Florianopolis, Brazil.

The initial sampling in the Marine Monitoring Program (MOMAM), coordinated by the Ministry of Marine Affairs (IEAPM), was performed along the southeast coast of Brazil. Orthopristis ruber samples were collected at Guanabara, Sepetiba and Ilha Grande Bays. Microsomal CYP1A levels and cytosolic cholinesterase (ChE), catalase (CAT) and glutathione S-transferase (GST) activities were measured in the liver of these fish according to established procedures. CAT activity and CYP1A content were significantly higher (P < or = 0.05) in fish caught at Guanabara Bay, which might be due to higher levels of peroxisome proliferators and Ah receptor agonists, respectively, at this site compared to the other sites. Also, lower GST activity was observed in fish from this site, which may possibly be related to the presence of oxidative-stress inducing compounds.

Animals ;  Brazil ;  Catalase ;  Analysis ;  Cholinesterases ;  Cytochrome P-450 CYP1A1 ;  Environmental Exposure ;  Environmental Monitoring ;  Fishes ;  Glutathione Transferase ;  Liver ;  Enzymology ;  Water Pollutants ;  Chemical ;  Adverse effects ;