PMID- 25102430 OWN - NLM STAT- MEDLINE DCOM- 20150527 LR - 20191210 IS - 1879-0984 (Electronic) IS - 0166-0934 (Linking) VI - 208 DP - 2014 Nov TI - Development of an EvaGreen-based multiplex real-time PCR assay with melting curve analysis for simultaneous detection and differentiation of six viral pathogens of porcine reproductive and respiratory disorder. PG - 56-62 LID - S0166-0934(14)00293-6 [pii] LID - 10.1016/j.jviromet.2014.06.027 [doi] AB - Concurrent infection of pigs with two or more pathogens is common in pigs under intensive rearing conditions. Porcine circovirus type 2 (PCV2), porcine parvovirus (PPV), porcine reproductive and respiratory syndrome virus (PRRSV), classical swine fever virus (CSFV), Japanese encephalitis virus (JEV) and pseudorabies virus (PRV) are all associated with reproductive or respiratory disorders or both and can cause significant economic losses in pig production worldwide. An EvaGreen-based multiplex real-time PCR (EG-mPCR) with melting curve analysis was developed in this study for simultaneous detection and differentiation of these six viruses in pigs. This method is able to detect and distinguish PCV2, PPV, PRRSV, CSFV, JEV and PRV with the limits of detection ranging from 100 to 500 copies/muL, high reproducibility, and intra-assay and inter-assay variation ranging from 0.11 to 3.20%. After validation, a total of 118 field samples were tested by the newly developed EG-mPCR. PCV2 was identified in 23%, PPV in 15%, PRRSV in 17% and PRV in 5% of the samples. Concurrent PCV2 and PRRSV infection was detected in 6.7%, PCV2 and PPV in 5% and PPV2 and PRRSV infection was detected in 5% of the cases. The agreement of the EG-mPCR and conventional PCR tests was 99.2%. This EG-mPCR will be a useful, rapid, reliable and cost-effective alternative for routine surveillance testing of viral infections in pigs. CI - Copyright (c) 2014 Elsevier B.V. All rights reserved. FAU - Rao, Pinbin AU - Rao P AD - College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, China. FAU - Wu, Haigang AU - Wu H AD - College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, China. FAU - Jiang, Yonghou AU - Jiang Y AD - College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, China. Electronic address: yonghoujiang@zstu.edu.cn. FAU - Opriessnig, Tanja AU - Opriessnig T AD - The Roslin Institute and The Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian EH25 9RG, UK; Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA. FAU - Zheng, Xiaowen AU - Zheng X AD - College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, China. FAU - Mo, Yecheng AU - Mo Y AD - College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, China. FAU - Yang, Zongqi AU - Yang Z AD - College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, China. LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140804 PL - Netherlands TA - J Virol Methods JT - Journal of virological methods JID - 8005839 SB - IM MH - Animals MH - Costs and Cost Analysis MH - DNA Viruses/classification/genetics/isolation & purification MH - Molecular Diagnostic Techniques/economics/methods MH - Multiplex Polymerase Chain Reaction/economics/*methods MH - RNA Viruses/classification/genetics/isolation & purification MH - Real-Time Polymerase Chain Reaction/economics/*methods MH - Reproducibility of Results MH - Reproductive Tract Infections/diagnosis/*veterinary/virology MH - Respiratory Tract Infections/diagnosis/*veterinary/virology MH - Sensitivity and Specificity MH - Staining and Labeling/methods MH - Swine MH - Swine Diseases/*diagnosis/virology MH - Time Factors MH - Transition Temperature MH - Veterinary Medicine/economics/*methods MH - Virus Diseases/diagnosis/*veterinary/virology OTO - NOTNLM OT - EvaGreen OT - Melting curve OT - Multiplex real-time PCR OT - Pig viruses OT - Surveillance EDAT- 2014/08/08 06:00 MHDA- 2015/05/28 06:00 CRDT- 2014/08/08 06:00 PHST- 2014/02/18 00:00 [received] PHST- 2014/05/17 00:00 [revised] PHST- 2014/06/20 00:00 [accepted] PHST- 2014/08/08 06:00 [entrez] PHST- 2014/08/08 06:00 [pubmed] PHST- 2015/05/28 06:00 [medline] AID - S0166-0934(14)00293-6 [pii] AID - 10.1016/j.jviromet.2014.06.027 [doi] PST - ppublish SO - J Virol Methods. 2014 Nov;208:56-62. doi: 10.1016/j.jviromet.2014.06.027. Epub 2014 Aug 4.