The double-antigen ELISA concept for early detection of E-rns-specific classical swine fever virus antibodies and application as an accompanying test for differentiation of infected from marker vaccinated animals
文献类型: 外文期刊
第一作者: Meyer, D.
作者: Meyer, D.;Becher, P.;Postel, A.;Fritsche, S.;Engemann, C.;Luo, Y.;Qiu, H. -J.;Blome, S.;Beyerbach, M.;Chang, C. -Y.
作者机构:
关键词: classical swine fever virus;DIVA assay;DIVA vaccine;double-antigen ELISA;E-rns-based antibody ELISA;serology
期刊名称:TRANSBOUNDARY AND EMERGING DISEASES ( 影响因子:5.005; 五年影响因子:4.622 )
ISSN: 1865-1674
年卷期: 2017 年 64 卷 6 期
页码:
收录情况: SCI
摘要: Emergency vaccination with live marker vaccines represents a promising control strategy for future classical swine fever (CSF) outbreaks, and the first live marker vaccine is available in Europe. Successful implementation is dependent on a reliable accompanying diagnostic assay that allows differentiation of infected from vaccinated animals (DIVA). As induction of a protective immune response relies on virus-neutralizing antibodies against E2 protein of CSF virus (CSFV), the most promising DIVA strategy is based on detection of E-rns-specific antibodies in infected swine. The aim of this study was to develop and to evaluate a novel E-rns-specific prototype ELISA (pigtype CSFV E-rns Ab), which may be used for CSF diagnosis including application as an accompanying discriminatory test for CSFV marker vaccines. The concept of a double-antigen ELISA was shown to be a solid strategy to detect E-rns-specific antibodies against CSFV isolates of different genotypes (sensitivity: 93.5%; specificity: 99.7%). Furthermore, detection of early seroconversion is advantageous compared with a frequently used CSFV E2 antibody ELISA. Clear differences in reactivity between sera taken from infected animals and animals vaccinated with various marker vaccines were observed. In combination with the marker vaccine CP7_E2alf, the novel ELISA represents a sensitivity of 90.2% and a specificity of 93.8%. However, cross-reactivity with antibodies against ruminant pestiviruses was observed. Interestingly, the majority of samples tested false-positive in other E-rns-based antibody ELISAs were identified correctly by the novel prototype E-rns ELISA and vice versa. In conclusion, the pigtype CSFV E-rns Ab ELISA can contribute to an improvement in routine CSFV antibody screening, particularly for analysis of sera taken at an early time point after infection and is applicable as a DIVA assay. An additional E-rns antibody assay is recommended for identification of false-positive results in a pig herd immunized with the licensed CP7_E2alf marker vaccine.
分类号:
- 相关文献
作者其他论文 更多>>
-
Effect of dietary Auricularia cornea culture supplementation on growth performance, serum biochemistry profile and meat quality in growing-finishing pigs
作者:Liu, X.;Huang, L.;Luo, Y.;Qi, L.;Ye, J.;Yan, Y.;Ju, Y.;Liu, M.;Zhang, S.;Li, Y.
关键词:Auricularia cornea culture; growing-finishing pigs; growth performance; meat quality
-
Respiration responses of wheat seedlings to treatment with trehalose under heat stress
作者:Luo, Y.;Liu, X-Y;Xue, Y-J;Geng, M.;Cao, X-Y;Liu, J-J;Cao, X-Y;Liu, J-J;Cao, X-Y;Liu, J-J
关键词:alternative respiration pathway; heat stress; malate-oxaloacetate shuttle; photosynthetic efficiency; trehalose; Triticum aestivum; wheat
-
Different responses of soil organic carbon fractions to additions of nitrogen
作者:Chen, H.;Li, D.;Wang, K.;Chen, H.;Li, D.;Wang, K.;Feng, W.;Niu, S.;Plante, A. F.;Luo, Y.
关键词:
-
EFFECTS OF A VACUUM INFILTRATION-BASED METHOD WITH ASCORBIC ACID ON INTERNAL BROWNING OF PLUM (PRUNUS SALICINA LINDELL CV. YUHUANG) DURING COLD STORAGE
作者:Shao, Y.;Luo, Y.;Chen, A.;Chu, H.;Lu, C.;Zhu, Y.;Tian, H.;Zhu, B.
关键词:
-
Highly virulent porcine reproductive and respiratory syndrome virus emerged in China
作者:Tong, G. -Z.;Zhou, Y. -J.;Hao, X. -F.;Tian, Z. -J.;Tong, G. -Z.;An, T. -Q.;Zhou, T.;Li, G. -X.;Qiu, H. -J.;Wei, T. -C.;Yoo, D.;Yuan, X. -F.
关键词:PRRS;highly virulent PRRSV;arteriviruses;nidoviruses;NSP2;high fever disease
-
Long terminal repeats are not the sole determinants of virulence for equine infectious anemia virus
作者:Tu, Y. -B.;Zhou, T.;Yuan, X. -F.;Qiu, H. -J.;Xue, F.;Sun, C. -Q.;Wang, L.;Wu, D. -L.;Peng, J. -M.;Kong, X. -G.;Tong, G. -Z.
关键词:
-
Pre-Clinical Evaluation of a Real-Time PCR Assay on a Portable Instrument as a Possible Field Diagnostic Tool: Experiences from the Testing of Clinical Samples for African and Classical Swine Fever Viruses
作者:Liu, L.;Stahl, K.;Belak, S.;Liu, L.;Stahl, K.;Belak, S.;Liu, L.;Luo, Y.;Qiu, H. -J.;Luo, Y.;Qiu, H. -J.;Accensi, F.;Ganges, L.;Rodriguez, F.;Accensi, F.;Rodriguez, F.;Shan, H.;Belak, S.
关键词:African swine fever virus;classical swine fever virus;portable real-time PCR cycler;field test;on-site diagnosis