Lipid peroxidation and glutathione content in the liver and white muscle of hake (Mercullius mercullius L.) and sea bream (Pagellus erythrinus L.) from the Adriatic sea
2006
Ognjanovic, B.I. | Filipovic, J.Z. | Markovic, S.D. | Zikic, R.V. | Stajn, A.S., University of Kragujevac, Kragujevac (Serbia). Faculty of Science, Institute of Biology and Ecology | Petrovic, V.M. | Saicic, Z.S., Institute for Biological Research Sinisa Stankovic, Belgrade (Serbia). Department of Physiology
Fish is the most important organisms used in biomonitoring of aquatic ecosystems. Parameters of oxidative stress in fish tissues represent significant biomarkers in the assessment of the status of environment. Specimens of hake (Merluccius merluccius L.) and sea bream (Pagellus erythrimus L.) were collected at the end of May 2005 from the locality in front of sea-port Bar (South Adriatic Sea). Parameters of oxidative stress (concentration of lipid peroxidase - LP and reduced glutathione - GSH) were determined in the liver and white muscle of hake and sea bream. Physical-chemical parameters (salinity, concentration of dissolved oxygen and temperature) were determined in water of the investigated locality. Obtained results showed that the concentration of LP was higher in liver of hake and sea bream in comparison to white muscle. However, significantly higher concentration of GSH was found in white muscle of hake and sea bream in comparison to liver. These changes of oxidative stress parameters point to tissue specificity, which is the consequence of different metabolic and antioxidative activity. Interspecific differences were also established. Higher concentrations of LP and GSH in liver of hake and in white muscle of sea bream were recorded, due to the changes of physical-chemical parameters of environment. The intensity of oxidative stress in liver of hake and sea bream was higher in comparison to muscle.
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