[Objective]This study was to investigate the effect of different concentrations of Norfloxacin on the superoxide dismutase （ SOD） activities in the blood plasma and liver tissues of Amur sturgeon （ Acipenser schren...[Objective]This study was to investigate the effect of different concentrations of Norfloxacin on the superoxide dismutase （ SOD） activities in the blood plasma and liver tissues of Amur sturgeon （ Acipenser schrencki Brandt） and sterlet （ Acipenser ruthenus Linnaeus） . [Method] Using pharmaco-toxicological evaluation method,Norfloxacin with the concentrations of 0,20,40,60,80 and 100 mg /kg,was orally delivered to the Amur sturgeon and sterlet for 5 d,respectively. The SOD activities in the blood plasma and liver tissues were measured after drug withdrawal for 2 d to explore the optimal dosing concentration of Norfloxacin during sturgeon culture,as well as the effect of Norfloxacin on liver injury. [Result] SOD existed in both two sturgeons but with different amounts,and the SOD activities were higher in the livers than in the blood plasma no matter in the control and all drug delivered groups. Under different drug delivery concentrations,the SOD activities first increased and then decreased in the 2 tissues of the 2 sturgeon species,and the SOD activities reached the maximum when the drug delivery concentration was 40 mg /kg. The drug de- livery concentration had little effect on the SOD activities in the blood plasma,which showed stable changes. When the drug delivery concentration was 40 mg /kg,the SOD activities in the blood plasma of Amur sturgeon were higher than that of sterlet,while for the other concentrations,the SOD activities in the plasma of sterlet showed higher performance. However,the SOD activities changed significantly through drug delivery in the liver tis- sues,and the SOD activities were higher in the sterlet than in the Amur sturgeon when the drug delivery concentrations were 0,40 and 100 mg /kg. The SOD activity in the sterlet was the highest under 40 mg /kg,presenting a sharp peak value. The optimal drug delivery concentration of Norfloxa- cin was 30 -50 mg /kg,under which the Norfloxacin presented best effect and had no injury effect on livers. [Conclusion]This study provides theo- retical basis for the reasonable application of Norfloxacin in aquaculture.展开更多
基金funded by the Special Fund for Agro-scientific Research in the Public Industry of China (201203085 )the Fundamental Research Fund of Central Welfare Scientific Research Institutes (201003)
文摘[Objective]This study was to investigate the effect of different concentrations of Norfloxacin on the superoxide dismutase （ SOD） activities in the blood plasma and liver tissues of Amur sturgeon （ Acipenser schrencki Brandt） and sterlet （ Acipenser ruthenus Linnaeus） . [Method] Using pharmaco-toxicological evaluation method,Norfloxacin with the concentrations of 0,20,40,60,80 and 100 mg /kg,was orally delivered to the Amur sturgeon and sterlet for 5 d,respectively. The SOD activities in the blood plasma and liver tissues were measured after drug withdrawal for 2 d to explore the optimal dosing concentration of Norfloxacin during sturgeon culture,as well as the effect of Norfloxacin on liver injury. [Result] SOD existed in both two sturgeons but with different amounts,and the SOD activities were higher in the livers than in the blood plasma no matter in the control and all drug delivered groups. Under different drug delivery concentrations,the SOD activities first increased and then decreased in the 2 tissues of the 2 sturgeon species,and the SOD activities reached the maximum when the drug delivery concentration was 40 mg /kg. The drug de- livery concentration had little effect on the SOD activities in the blood plasma,which showed stable changes. When the drug delivery concentration was 40 mg /kg,the SOD activities in the blood plasma of Amur sturgeon were higher than that of sterlet,while for the other concentrations,the SOD activities in the plasma of sterlet showed higher performance. However,the SOD activities changed significantly through drug delivery in the liver tis- sues,and the SOD activities were higher in the sterlet than in the Amur sturgeon when the drug delivery concentrations were 0,40 and 100 mg /kg. The SOD activity in the sterlet was the highest under 40 mg /kg,presenting a sharp peak value. The optimal drug delivery concentration of Norfloxa- cin was 30 -50 mg /kg,under which the Norfloxacin presented best effect and had no injury effect on livers. [Conclusion]This study provides theo- retical basis for the reasonable application of Norfloxacin in aquaculture.
