›› 2011, Vol. 38 ›› Issue (5): 241-243.

• 经验交流 • 上一篇    下一篇

羊附红细胞体双抗体夹心ELISA诊断方法的建立

张富梅, 韩福生, 李继连, 李子平   

  1. 河北北方学院动物科技学院, 河北张家口 075000
  • 收稿日期:2010-10-21 修回日期:1900-01-01 出版日期:2011-05-20 发布日期:2011-05-20

Establishment of Double-antibody Sandwich ELISA for Eperythrozoon ovis

ZHANG Fu-mei, HAN Fu-sheng, LI Ji-lian, LI Zi-ping   

  1. College of Animal Science and Technology, Hebei North University, Zhangjiakou 075000, China
  • Received:2010-10-21 Revised:1900-01-01 Online:2011-05-20 Published:2011-05-20

摘要: 为快速准确诊断和检测羊附红细胞体病,及时采取防治措施,建立了检测羊附红细胞体抗原的双抗夹心ELISA诊断方法。选取规模化养殖场羊,镜检附红细胞体红细胞感染率> 90%,无菌采取血液,分离羊附红细胞体抗原,制备纯化兔抗羊附红细胞体抗体,应用辣根过氧化物酶标记抗体,进行双抗体夹心ELISA试验。试验结果表明,双抗体夹心ELISA方法的最佳工作条件为:抗体最佳包被量为82.91 μg/mL,酶标抗体最适工作浓度为1∶400,抗原最低检出量为7.81 μg/mL;而且与支原体、大肠杆菌、葡萄球菌以及牛、猪、兔附红细胞体均不出现交叉反应,表明该方法具有良好的特异性,可用于羊附红细胞体病的诊断和群体检测。

关键词: 羊; 附红细胞体; 双抗体夹心ELISA

Abstract: To diagnose and detect Eperythrozoonosis on sheep quickly and take preventive measures in time, the double-antibody sandwich ELISA was established. The blood samples of sheep from large-scale farms whose red cell infective rate was over 90% were selected. Eperythrozoon ovis antigen was isolated, rabbit anti-sheep antibody was purified, antibody was labeled with HRP, then double-antibody sandwich ELISA was established. The results showed that the optimal working concentration of IgG was 82.91 μg/mL, while the best enzyme-conjugated antibody concentration was 1∶400, and the detective minimum of antigen was 7.81 μg/mL. The specific test and crossing reaction indicated that the double-antibody sandwich ELISA was a quick, sensitive way adapted to diagnosis and colony check.

Key words: sheep; Eperythrozoon; double-antibody sandwich ELISA

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