Effects of cadmium（ Ⅱ ） stress on xanthine oxidase and antionxidant enzyme activities in hepatopancreas of oriental weatherfish Misgurnus anguillicaudatus
SUN Shu-hong, JIAO Chuan-zhen, LIU Xiao-lin, WEI Zhen-lin
1. College of Animal Science and Technology, Northwest Agricultural ＆ Forestry University, Yangling 712100, China; 2. Department of Biology, Dezhou University, Dezhou 253023, China
Abstract: The activities of superoxide dismutase （ SOD）, catalase （ CAT）, peroxidase （POD） and malonyldialdehyde（MDA） were determined in hepatopancreas in oriental weatherfish Misgurnus anguillicaudatus exposed to different concentrations [0.025 mg Cd（ Ⅱ ）/L,0.25 mg Cd（Ⅱ ）/L and 2.5 mg Cd（Ⅱ）/L] of Cadmium chloride （ Cd（ Ⅱ ） ） to evaluate the effects of cadmium（ Ⅱ ） stress on xanthine oxidase and antionxidant enzyme activities. The results showed that there were significant increase in SOD activity in the fish exposed to 0.025 mg Cd（ Ⅱ ）/L, with the procedure, but no significant changes in activities of CAT, and POD and MDA content. In the high concentration groups （0.25 and 2.5 mg Cd（ Ⅱ）/L）, however, the antioxidant enzyme activities increased at first and then decreased, the higher the Cd（ Ⅱ ） concentration, more rapidly and earlier the antioxidant enzyme activities increased. SOD activity was found to be sensitive to Cd（ Ⅱ ） concentration and time changes, followed by CAT and POD activities, and opposite to SOD activity, and MDA content.
2009, Vol. 24 
