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Evaluation of impact of PAH on a tropical fish, Oreochromis mossambicus using multiple biomarkers

DRS at CSIR-National Institute of Oceanography

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Title Evaluation of impact of PAH on a tropical fish, Oreochromis mossambicus using multiple biomarkers
 
Creator Shailaja, M.S.
DeSilva, C.
 
Subject brackishwater fish
sublethal effects
pollution effects
aromatic hydrocarbons
biomarkers
Oreochromis mossambicus
 
Description Treatment of the widely occurring tropical cichlid, Oreochromis mossambicus with a pure polycyclic aromatic hydrocarbon (PAH), phenanthrene, induced a concentration-dependant formation of the enzyme, 7-ethoxyresorufin-O-deethylase (EROD). Concomittant increase (65-669%) in the activity of sorbitol dehydrogenase in the serum (SSDH) occurring with EROD induction denoted liver cell damage, which was more severe in fish exposed to lower concentrations (0.4-4 mu g g u-1) of the chemical. In O. mossambicus exposed to 25% refinery effluent liver damage associated with cell death was indicated by the twin analyses of SSDH and liver somatic index. Cell injury appeared to have occurred at low PAH concentrations due to inadequately induced phase II-related detoxification of metabolites. This was indicated by the nearly 33% higher activity of hepatic glutathione S-transferase (GST) in fish exposed to higher PAH concentrations as compared to low-exposure animals. Tilapia such as O. mossambicus were found to be eminently suited for biomonitoring in tropical coastal waters. A combination of EROD and serum sorbitol dehydrogenase activity measurements serves as an excellent tool for biomonitoring sublethal effects of PAH pollution in fish.
 
Date 2008-07-18T05:52:45Z
2008-07-18T05:52:45Z
2003
 
Type Journal Article
 
Identifier Chemosphere, Vol.53; 835-841p.
http://drs.nio.org/drs/handle/2264/1269
 
Language en
 
Rights Copyright [2003]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice that the rights are violated then the item would be withdrawn.
 
Publisher Elsevier