Abstract:
:Carbonyl reductase (CBR) is an enzyme involved in protection from oxidative stress. In rainbow trout (Oncorhynchus mykiss), the hepatic mRNA abundance of the two isoforms (A and B) is increased after exposure to treated sewage effluents, as well as after exposure with β-naphthoflavone (β-NF) and the pro-oxidant paraquat. In this study, we show that the same chemicals similarly increase the single known hepatic CBR mRNA level and CBR catalytic activity in the coastal living eelpout (Zoarces viviparus). Hepatic CBR mRNA abundance and catalytic activity were also compared between eelpout collected at contaminated and reference sites on the Swedish west coast, but no differences were observed. In conclusion, CBR is a potential biomarker candidate for monitoring the exposure and effects of AhR agonists and/or pro-oxidants in the marine environment, but more research is needed to investigate temporal regulation as well as dose dependency for different chemicals. The mRNA and enzymatic assays presented in this study provide two additional tools for researchers interested in expanding their biomarker battery.
journal_name
Mar Environ Resjournal_title
Marine environmental researchauthors
Albertsson E,Rad A,Sturve J,Larsson DG,Förlin Ldoi
10.1016/j.marenvres.2012.07.001subject
Has Abstractpub_date
2012-09-01 00:00:00pages
56-61eissn
0141-1136issn
1879-0291pii
S0141-1136(12)00135-3journal_volume
80pub_type
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