实验动物与比较医学 ›› 2013, Vol. 33 ›› Issue (4): 275-278.DOI: 10.3969/j.issn.1674-5817.2013.04.006

• 论著 • 上一篇    下一篇

豚鼠弓形虫抗体ELISA检测方法的建立及应用

李晓波, 付瑞, 巩薇, 王吉, 卫礼, 王淑菁, 岳秉飞, 贺争鸣   

  1. 中国食品药品检定研究院 实验动物资源研究所, 北京 100050
  • 收稿日期:2012-11-29 出版日期:2013-08-25 发布日期:2013-08-25
  • 作者简介:李晓波(1980-),男,硕士,研究方向:实验动物免疫学。E-mail:lxb8493059@yahoo.com.cn
  • 基金资助:
    国家科技支撑计划(编号: 2011BAI15B01)

Establishment and Application of ELISA for Detection of Anti-Toxoplasma Antibodies in Guinea Pig

LI Xiao-bo, FU Rui, GONG Wei, WANG Ji, WEI Li, WANG Shu-jing, YUE Bing-fei, HE Zheng-ming   

  1. Laboratory Animal Institute, National Institutes for Food and Drug Control, Beijing 100050, China
  • Received:2012-11-29 Online:2013-08-25 Published:2013-08-25

摘要: 目的 建立以弓形虫重组抗原的豚鼠弓形虫抗体ELISA方法,并进行初步应用。方法 根据重组抗原的工作浓度包被酶标板,确定酶标二抗浓度,对方法的特异性、灵敏度、稳定性和重复性等进行测试。结果 确定酶标二抗最佳稀释度为1∶8 000; 与豚鼠淋巴细胞脉络丛脑膜炎病毒(LCM)、仙台病毒(SV)、肺炎病毒(PVM)及呼肠孤3型(Reo3)阳性血清均无交叉反应; 对已知阳性血清的检测上限可达1∶2 560; 6个月的稳定性试验显示A490值的相对偏差均小于15%; 批内变异系数(CV)5.7%~9.5%,批间变异系数(CV)1.9%~9.0%; 对182份样本的检测表明豚鼠弓形虫抗体阳性率为7.14%(13/182),与IFA检测结果的符合率为100%,与商品化试剂盒的阳性符合率为92.3%,阴性符合率为100%。结论 建立的豚鼠弓形虫重组抗原ELISA检测方法可用以弓形虫抗体的常规检测。

关键词: 豚鼠, 弓形虫, 重组抗原, 酶联免疫吸附试验

Abstract: Objective To establish and apply a ELISA method for detecting the toxoplasma antibodies by recombinant antigen in guinea pig. Methods ELISA plates were coated using optimized recombinant toxoplasma antigen. we then determine optimal HRP-conjugated IgG concentration and test the assays specificity, sensitivity, stability and repeatability. Results The optimal HRP-IgG concentration is 1∶8000. There is no cross reaction when guinea pig sera with LCM, SV, PVM and Reo3 antibodies positive were added. The control positive serum could be detected at a maximum dilution of 1∶2560. Stability tests within six monthes show that the relative deviation of A490 is less than 15%. The coefficient variation of the same batch is 5.7%-9.5%, of different batches is 1.9%-9.0%. The tox antibodies positive rate of 182 samples is 7.14%(13/182). The results coincidence rate between the assay and IFA is 100%, the positive coincidence is 92.3% and then negative is 100% compared to commercial kit. Conclusion The ELISA based on recombinant tox antigen can be used for routine test of guinea pig tox antibodies and be popularized.

Key words: Guniea pig, Toxoplasma, Recombinant antigen, ELISA

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