PMID- 23217174 OWN - NLM STAT- MEDLINE DCOM- 20141023 LR - 20181202 IS - 1865-1682 (Electronic) IS - 1865-1674 (Linking) VI - 61 IP - 4 DP - 2014 Aug TI - Development of indirect ELISAs for differential serodiagnosis of classical and highly pathogenic porcine reproductive and respiratory syndrome virus. PG - 341-9 LID - 10.1111/tbed.12040 [doi] AB - The objective of this study was to develop two indirect enzyme-linked immunosorbent assays (iELISAs) for detection of serum antibodies against classical vaccine strain of porcine reproductive and respiratory syndrome virus (PRRSV) and highly pathogenic PRRSV (HP-PRRSV). To detect the common antibodies against classical and HP-PRRSV, the coating antigen used in the iELISA (designated iELISA-180) was the antigen of Nsp2-180, the 180aa at amino terminal of Nsp2. To detect the different antibodies against classical and HP-PRRSV, the coating antigen in the second iELISA (designated iELISA-D29) was Nsp2-D29, the deleted 29aa in Nsp2 of HP-PRRSV. The antigen concentration and serum dilutions were optimized using a draughtboard titration. The cut-off values of 0.361 at OD(450nm) for the iELISA-180 and 0.27 at OD(450nm) for the iELISA-D29 were determined by testing a panel of 120 classical PRRSV positive and 198 PRRSV negative pig serum samples, which generated the specificity of 97.1% and 96.7%, the sensitivity of 96.9% and 96.3% for iELISA-180 and iELISA-D29, respectively. The agreements between the Western blot and iELISA-180 and iELISA-D29 were 98%, 96.7%, respectively. The developed iELISAs can be used to differentiate serologically HP-PRRSV from the vaccinated or classical PRRSV in clinical serum samples. CI - (c) 2012 Blackwell Verlag GmbH. FAU - Xiao, Y H AU - Xiao YH AD - Department of Basic Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Shandong, China. FAU - Wang, T T AU - Wang TT FAU - Zhao, Q AU - Zhao Q FAU - Wang, C B AU - Wang CB FAU - Lv, J H AU - Lv JH FAU - Nie, L AU - Nie L FAU - Gao, J M AU - Gao JM FAU - Ma, X C AU - Ma XC FAU - Hsu, W H AU - Hsu WH FAU - Zhou, E M AU - Zhou EM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121210 PL - Germany TA - Transbound Emerg Dis JT - Transboundary and emerging diseases JID - 101319538 RN - 0 (Antibodies, Viral) RN - 0 (Antigens, Viral) RN - 0 (Recombinant Proteins) RN - 0 (Viral Vaccines) SB - IM MH - Animals MH - Antibodies, Viral/*blood MH - Antigens, Viral/*immunology MH - Blotting, Western MH - Diagnosis, Differential MH - Enzyme-Linked Immunosorbent Assay/methods/*veterinary MH - Porcine Reproductive and Respiratory Syndrome/blood/*diagnosis/prevention & control/virology MH - Porcine respiratory and reproductive syndrome virus/*immunology/isolation & purification/pathogenicity MH - Recombinant Proteins/immunology MH - Sensitivity and Specificity MH - Swine MH - Viral Vaccines/immunology OTO - NOTNLM OT - ELISA OT - Nsp2 OT - PRRSV OT - diagnosis OT - highly pathogenic PRRSV EDAT- 2012/12/12 06:00 MHDA- 2014/10/24 06:00 CRDT- 2012/12/11 06:00 PHST- 2012/10/06 00:00 [received] PHST- 2012/12/11 06:00 [entrez] PHST- 2012/12/12 06:00 [pubmed] PHST- 2014/10/24 06:00 [medline] AID - 10.1111/tbed.12040 [doi] PST - ppublish SO - Transbound Emerg Dis. 2014 Aug;61(4):341-9. doi: 10.1111/tbed.12040. Epub 2012 Dec 10.