Seasonal variations of the activity of antioxidant defense enzymes in the red mullet (Mullus barbatus l.) from the Adriatic Sea.
This study investigated seasonal variations of antioxidant defense enzyme activities: total, manganese, copper zinc containing superoxide dismutase (Tot SOD, Mn SOD, CuZn SOD), catalase (CAT), glutathione peroxidase (GSH-Px), glutathione reductase (GR) and biotransformation phase II enzyme glutathione-S-transferase (GST) activity in the liver and white muscle of red mullet (Mullus barbatus). The investigations were performed in winter and spring at two localities: Near Bar (NB) and Estuary of the River Bojana (EB) in the Southern Adriatic Sea. At both sites, Mn SOD, GSH-Px, GR and GST activities decreased in the liver in spring. In the white muscle, activities of Mn SOD, GSH-Px, GR and GST in NB decreased in spring. GR decreased in spring in EB, while CAT activity was higher in spring at both sites. The results of Principal Component Analysis (PCA) based on correlations indicated a clear separation of various sampling periods for both investigated tissues and a marked difference between two seasons. Our study is the first report on antioxidant defense enzyme activities in the red mullet in the Southern Adriatic Sea. It indicates that seasonal variations of antioxidant defense enzyme activities should be used in further biomonitoring studies in fish species.
Pavlović
Sladjan Z
SZ
Department of Physiology, Institute for Biological Research "Sinisa Stanković", University of Belgrade, 11060 Belgrade, Serbia. sladjan@ibiss.bg.ac.rs
Borković Mitić
Slavica S
SS
Radovanović
Tijana B
TB
Perendija
Branka R
BR
Despotović
Svetlana G
SG
Gavrić
Jelena P
JP
Saicić
Zorica S
ZS
D000818:Animals; D008099:Liver / Q000201:enzymology*; D018656:Muscle Fibers, Fast-Twitch / Q000201:enzymology*; D009792:Oceans and Seas; D010088:Oxidoreductases / Q000378:metabolism*; D012621:Seasons; D023701:Smegmamorpha / Q000502:physiology*
D010088:Oxidoreductases
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