Oxidative stress and antioxidant enzymes activities in the African catfish, Clarias gariepinus, experimentally challenged with Escherichia coli and Vibrio fischeri

被引:37
作者
Adeyemi, Joseph A. [1 ]
机构
[1] Osun State Univ, Coll Sci Engn & Technol, Dept Biol Sci, Osogbo, Osun State, Nigeria
关键词
African catfish; Lipid peroxidation; Protein carbonylation; GST activity; Catalase activity; Bacterial infection; GLUTATHIONE S-TRANSFERASES; RAINBOW-TROUT; BINDING;
D O I
10.1007/s10695-013-9847-x
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
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 x 10(5) CFU/ml of Escherichia coli (EC1), 2 x 10(5) CFU/ml of E. coli (EC2), 1 x 10(5) CFU/ml of Vibrio fischeri (V1), 2 x 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.
引用
收藏
页码:347 / 354
页数:8
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