Antioxidant parameters in fish white muscle as biomarkers of exposure to a cyanobacterial bloom
2015
Autori:
Gavrilović, BrankaProkić, Marko
Gavrić, Jelena
Despotović, Svetlana
Radovanović, Tijana
Borković Mitić, Slavica
Ognjanovic, Branka I.
Pavlović, Slađan
Saičić, Zorica
Tip dokumenta:
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt:
This study examines the responses of antioxidant parameters in the white
muscle of four freshwater fish species: Rutilus rutilus (roach), Blicca
bjoerkna (white bream), Carassius gibelio (Prussian carp) and Perca
fluviatilis (European perch) after exposure to a bloom of Aphanizomenon
flos-aquae (Cyanobacteria) in the Gruza Reservoir in Serbia. The set of
analyzed biomarkers included the activities of antioxidant enzymes:
superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase
(GSH-Px), glutathione reductase (GR) and biotransformation phase II
enzyme glutathione-S-transferase (GST), and the concentrations of total
glutathione (GSH) and sulfhydryl (-SH) groups that were measured before
and during the bloom. Our results show that SOD activity in C. gibelio
and P. fluviatilis, GSH-Px and GST activities in all four fish, GR
activity in R. rutilus and C. gibelio and the -SH group concentration in
P. fluviatilis markedly decreased during the bloom. The activity of CAT
in all four fish and the concentration of GSH in B. bjoerkna and P.
fluviatilis significantly increased. The observed changes in nonspecific
antioxidant biomarkers in fish muscle (especially CAT, GSH-Px and GST
activities) suggest that these parameters could be useful tools in
environmental monitoring programs of the freshwater ecosystems where
cyanobacterial blooms occur.
Ključne reči:
antioxidant biomarkers; freshwater; fish; muscle; Aphanizomenon flos-aquae; biomonitoringIzvor:
Biologia, 2015, 70, 6, 831-838
DOI: 10.1515/biolog-2015-0086
ISSN: 1336-9563