The sensitivity of early life stages of common carp (Cyprinus carpio L.) to chronic exposure to single and combined environmental concentrations of the triazine metabolites terbuthylazine 2-hydroxy, terbuthylazine-desethyl and atrazine 2-hydroxy was evaluated under laboratory conditions. Their effects were assessed on lipid peroxidation, antioxidant enzymes (total superoxide dismutase, glutathione reductase, catalase, glutathione S-transferase, reduced glutathione), mortality, growth, development and histology. Single metabolites (terbuthylazine 2-hydroxy-0.73 μg/L; terbuthylazine-desethyl-1.80 μg/L; atrazine 2-hydroxy-0.66 μg/L) and combinations were not associated with negative effects on hatching, behaviour, embryo viability, growth or early ontogeny. Carp exposed to terbuthylazine-desethyl at 1.80 μg/L showed significantly lower total superoxide dismutase and glutathione reductase activity compared with the control group. Liver histology revealed diffused steatosis associated with the presence of lipid inclusions in hepatic cells in groups exposed to terbuthylazine-desethyl, atrazine 2-hydroxy and the tested combination of metabolites.

• Klíčová slova
• Antioxidant enzymes, Atrazine 2-hydroxy, Fish, Terbuthylazine 2-hydroxy, Terbuthylazine-desethyl,
• MeSH
• antioxidancia metabolismus   MeSH
• atrazin metabolismus   toxicita   MeSH
• chemické látky znečišťující vodu metabolismus   toxicita   MeSH
• embryo nesavčí účinky léků   enzymologie   metabolismus   MeSH
• glutathion metabolismus   MeSH
• glutathionreduktasa metabolismus   MeSH
• glutathiontransferasa metabolismus   MeSH
• herbicidy metabolismus   toxicita   MeSH
• játra účinky léků   embryologie   patologie   MeSH
• kapři embryologie   metabolismus   MeSH
• katalasa metabolismus   MeSH
• látky reagující s kyselinou thiobarbiturovou metabolismus   MeSH
• oxidační stres účinky léků   MeSH
• peroxidace lipidů účinky léků   MeSH
• superoxiddismutasa metabolismus   MeSH
• triaziny metabolismus   toxicita   MeSH
• zvířata MeSH
• Check Tag
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• antioxidancia MeSH
• atrazin MeSH
• chemické látky znečišťující vodu MeSH
• glutathion MeSH
• glutathionreduktasa MeSH
• glutathiontransferasa MeSH
• herbicidy MeSH
• katalasa MeSH
• látky reagující s kyselinou thiobarbiturovou MeSH
• superoxiddismutasa MeSH
• terbutylazine MeSH Prohlížeč
• triaziny MeSH

The aim of the study was to investigate effects of the triazine herbicide prometryne on red swamp crayfish on the basis of oxidative stress, antioxidant indices in hepatopancreas and muscle, and histopathology of hepatopancreas. Crayfish were exposed to prometryne concentrations of 0.51 μ g L(-1), 0.144 mg L(-1), and 1.144 mg L(-1) for 11 and 25 days. Indices of oxidative stress (thiobarbituric acid reactive substances (TBARS)), and antioxidant parameters (superoxide dismutase (SOD), catalase (CAT), and glutathione reductase (GR)) in crayfish muscle and hepatopancreas were measured. Chronic exposure to prometryne did not showed the impact of oxidative damage to cells. Changes activity of the antioxidant enzymes SOD, CAT, and GR were observed in all tested concentrations to prometryne for 11 and 25 days (P < 0.01) as compared with the control group. We did not see any differences in histopatological examination to hepatopancreas. Prolonged exposure of prometryne did not result in oxidative damage to cell lipids and proteins, but it led to changes in antioxidant activity in crayfish tissues. Changes in antioxidant systems were also observed in the environmental prometryne concentration of 0.51 μ g L(-1). The results suggest that antioxidant responses may have potential as biomarkers for monitoring residual triazine herbicides in aquatic environments.

• MeSH
• antioxidancia metabolismus   MeSH
• herbicidy škodlivé účinky   farmakologie   MeSH
• oxidační stres účinky léků   MeSH
• oxidoreduktasy metabolismus   MeSH
• prometryn škodlivé účinky   farmakologie   MeSH
• proteiny členovců metabolismus   MeSH
• severní raci metabolismus   MeSH
• zvířata MeSH
• Check Tag
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Názvy látek
• antioxidancia MeSH
• herbicidy MeSH
• oxidoreduktasy MeSH
• prometryn MeSH
• proteiny členovců MeSH