›› 2009, Vol. 36 ›› Issue (10): 147-150.

• 疾病防治 • 上一篇    下一篇

口蹄疫LPB-ELISA抗体滴度和中和抗体滴度符合性研究

李乐1,苗海生1,胡骑1,朱明旺2,李华春1   

  1. (1.云南省畜牧兽医科学研究所, 昆明 650224; 2.云南省保山疫苗厂, 保山 678000)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-10-20 发布日期:2009-10-20
  • 通讯作者: 李华春

The Relation between LPB-ELISA Antibody Titers and Neutralization Antibody Titers of FMD

LI Le1, MIAO Hai-sheng1, HU Ji1, ZHU Ming-wang2, LI Hua-chun1   

  1. (1.Yunnan Animal Husbandry and Veterinary Science Research Institute,Kunming 650224,China;2.Yunnan Baoshan Vaccine Plant,Baoshan 678000,China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-10-20 Published:2009-10-20
  • Contact: LI Hua-chun

摘要: 血清中和抗体滴度的大小反映血清对病毒感染的中和能力,其是评价疫苗免疫效果和病毒感染状况的重要指标,而液相阻断酶联免疫吸附试验(liquid phase block ELISA, LPB-ELISA)是一种通过ELISA检测抗体滴度的方法,因此研究LPB-ELISA抗体滴度和中和抗体滴度的关系对疫苗评价和理论研究有重要意义。本研究采用野外采集的90份牛血清进行了中和试验和LPB-ELISA试验,结果表明中和抗体滴度和LPB-ELISA抗体滴度具有相关性,相关系数为0.642,但是试验证明有41%中和抗体阴性样品会被LPB-ELISA检测为阳性,通过改变LPB-ELISA的阳性判断标准,采用抑制率>0.7的抗体滴度计算方法和1/8判定标准,可以使改进的LPB-ELISA的计算结果和中和试验结果更好的符合,降低假阳性率,使LPB-ELISA更适合进行口蹄疫血清学监测和普查。

关键词: 口蹄疫; 液相阻断酶联免疫吸附试验; 抗体滴度 

Abstract: The serum neutralizing antibody titer reflects the serum neutralization ability on virus infection. It is one of the important parameters for vaccine and virus infection evaluation. Liquid phase block ELISA is a method detecting antibody titer by the ELISA. So relationship between LPB-ELISA antibody titers and neutralizing antibody titer is valuable in vaccines and theoretical study. In this study, 90 bovine serum which were all collected from field were used to do LPB-ELISA test and neutralizing test. The results showed that there was correlation between the neutralizing antibody titer and the LPB-ELISA titers. The correlation coefficient was 0.642. But 41% tested antibody-negative samples detected by the LPB-ELISA was positive. By changing the criteria of LPB-ELISA positive,using suppression rate >0.7 calculation of antibody titer and 1/8 criteria, the LPB-ELISA results and the neutralizing antibody titer were in better coincidence, the false positive rate was reduced, so that LPB-ELISA was more suitable for foot and mouth disease serological monitoring and survey.

Key words: foot and mouth disease; liquid-phase blocking enzyme-linked immunosorbent assay; antibody titer

中图分类号: