Simultaneous detection of eight immunosuppressive chicken viruses using a GeXP analyser-based multiplex PCR assay Veterinary DNA viruses

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Abstract

Background: Immunosuppressive viruses are frequently found as co-infections in the chicken industry, potentially causing serious economic losses. Because traditional molecular biology methods have limited detection ability, a rapid, high-throughput method for the differential diagnosis of these viruses is needed. The objective of this study is to develop a GenomeLab Gene Expression Profiler Analyser-based multiplex PCR method (GeXP-multiplex PCR) for simultaneous detection of eight immunosuppressive chicken viruses. Results: Using chimeric primers, eight such viruses, including Marek's disease virus (MDV), three subgroups of avian leucosis virus (ALV-A/B/J), reticuloendotheliosis virus (REV), infectious bursal disease virus (IBDV), chicken infectious anaemia virus (CIAV) and avian reovirus (ARV), were amplified and identified by their respective amplicon sizes. The specificity and sensitivity of the optimised GeXP-multiplex PCR assay were evaluated, and the data demonstrated that this technique could selectively amplify these eight viruses at a sensitivity of 100 copies/20 μl when all eight viruses were present. Among 300 examined clinical specimens, 190 were found to be positive for immunosuppressive viruses according to this novel assay. Conclusion: The GeXP-multiplex PCR assay is a high-throughput, sensitive and specific method for the detection of eight immunosuppressive viruses and can be used for differential diagnosis and molecular epidemiological surveys.

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Zeng, T., Xie, Z., Xie, L., Deng, X., Xie, Z., Luo, S., … Huang, J. (2015). Simultaneous detection of eight immunosuppressive chicken viruses using a GeXP analyser-based multiplex PCR assay Veterinary DNA viruses. Virology Journal, 12(1). https://doi.org/10.1186/s12985-015-0455-5

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