›› 2013, Vol. 25 ›› Issue (6): 0-1233.

• 动物科学 •    

恩诺沙星注射对中华鳖肝脏Ⅰ相、Ⅱ相酶活性的影响

周凡1,林玲2,何丰1,*,丁雪燕1,薛辉利1,徐勇斌1   

  1. 1 浙江省水产技术推广总站,浙江 杭州 310012;2 浙江省平阳县渔业技术推广站,浙江 平阳 325400)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2013-11-25 发布日期:2013-11-25

Effects of enrofloxacin injection on the hepatic phase Ⅰand Ⅱ enzyme activities of Chinese soft\|shelled turtles, Pelodiscus sinensis

ZHOU Fan;LIN Ling;HE Feng;*;DING Xue\|yan;XUE Hui\|li;XYU Yong\|bin   

  1. 1 Zhejiang Fisheries Technical Extension Station, Hangzhou 310012, China;2 Pingyang Fisheries Technical Extension Station, Pingyang 325400, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2013-11-25 Published:2013-11-25

摘要: 对中华鳖腹腔注射浓度为015 mg·g-1体重的恩诺沙星,并在注射前、注射后1 h,2 h,6 h,12 h,24 h,2 d,5 d和10 d等8个时间点取样观察,研究恩诺沙星对中华鳖肝脏Ⅰ相,Ⅱ相酶活性的影响。结果表明:恩诺沙星注射后10 d内对I相的氨基比林N\|脱甲基酶(APND)、红霉素N\|脱甲基酶(ERND)以及7\|乙氧基异吩唑酮\|脱乙基酶(EROD)活性均有显著抑制作用。随着注射后时间的延长,APND活性先上升后下降,最低值出现在注射后10 d;ERND活性呈显著下降趋势,到注射后24 h抑制率显著升高,之后保持稳定;恩诺沙星对EROD活性在前12 h的抑制作用要明显强于12 h之后时间段。Ⅱ相代谢酶谷胱甘肽S转移酶(GSTs)及丙二醛(MDA)均受恩诺沙星的显著诱导,其最高值分别出现在注射后2 h和注射后5 d。试验认为,中华鳖Ⅰ相和Ⅱ相酶均会对药物做出反应,可作为其养殖过程中药物代谢及适用性的指示物。

关键词: 恩诺沙星, 中华鳖, 肝脏酶活性

Abstract: The effects of enrofloxacin injection (015mg·g-1) on the phaseⅠand phase Ⅱ enzyme activities in liver of Chinese soft\|shelled turtles, Pelodiscus sinensis were investigated in the present study. The sampling interval time were chosen at the initial stages, and 1 h, 2 h, 6 h, 12 h, 24 h, 2 d, 5 d and 10 d after injection, respectively. The results showed that the phaseⅠenzymes APND, ERND and EROD activities were all inhibited by enrofloxacin throughout the trial. The APND activity tended to recover firstly and then decreased significantly, the lowest value was observed in 10 d. ERND activity showed a decline tendency, the inhibition ratio increased significantly at 24 h and then became stable thereafter. The inhibition effect on EROD activity was much stronger at first 12 h. The GSTs activity and MDA content were both induced after enrofloxacin injection, the maximum level occurred at 2 h and 5 d, respectively. In conclusion, the present study indicated that the hepatic phaseⅠandⅡ enzyme of P. sinensis were sensitive parameters to use as biomarkers for evaluating the exposure to aquatic drugs.

Key words: enrofloxacin, Pelodiscus sinensi, hepatic enzyme activities