Abstract：
:The impacts of bacterial infection on cultivated fish species, African catfish, were investigated using oxidative stress biomarkers [lipid peroxidation (LPO) and protein carbonylation] and the activities of important antioxidant/detoxifying enzymes [catalase and glutathione S-transferase (GST)]. Fish were inoculated via oral gavage with one of the following treatments: 1 × 10(5) CFU/ml of Escherichia coli (EC1), 2 × 10(5) CFU/ml of E. coli (EC2), 1 × 10(5) CFU/ml of Vibrio fischeri (V1), 2 × 10(5) CFU/ml of V. fischeri (V2), gavaged with distilled water and not gavaged. Fish were maintained in the laboratory for 7 days after the bacterial inoculation, and the levels of LPO, protein carbonylation, GST, and catalase activities were determined in the muscle, gills, and liver of fish. Fish inoculated with bacteria (either E. coli or V. fischeri) had a significant higher levels of tissue LPO, protein carbonylation, and GST activities in a tissue-specific pattern (liver > muscle > gills). This appears to be related with the levels of bacterial inoculation, with effects more pronounced in fish inoculated with either EC2 or V2. The catalase activity did not differ significantly between the inoculated and fish that were not inoculated. The results of this study indicate that bacterial inoculation could result in oxidative stress in fish, and liver has a higher rate of oxidative stress per mg tissue compared to the gills and the muscle.
journal_name
Fish Physiol Biochemjournal_title
Fish physiology and biochemistryauthors
Adeyemi JAdoi
10.1007/s10695-013-9847-xsubject
Has Abstractpub_date
2014-04-01 00:00:00pages
347-54issue
2eissn
0920-1742issn
1573-5168journal_volume
40pub_type
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