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Comparison of real-time reverse transcription loop-mediated isothermal amplification and real-time reverse transcription polymerase chain reaction for duck Tembusu virus



Comparison of real-time reverse transcription loop-mediated isothermal amplification and real-time reverse transcription polymerase chain reaction for duck Tembusu virus



Journal of Virological Methods 182(1-2): 50-55



Duck Tembusu virus (DTMUV) has caused huge losses to the poultry industry in China since the spring of 2010. The development of a rapid, convenient, and reliable method to diagnose this emerging duck infectious disease is critical. In the present study, a real-time reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay was compared with the real-time reverse transcription polymerase chain reaction (RT-PCR) for detection of DTMUV. The sensitivity of real-time RT-LAMP was equal to that of the real-time RT-PCR, with a detection limit of 0.01 ELD(50) (50% egg lethal dose). The specificity of the real-time RT-LAMP and real-time RT-PCR was confirmed using RNAs and DNAs extracted from related viruses which cause duck infections. The reproducibility of the real-time RT-PCR assay was better than that of the real-time RT-LAMP. Only three results from 96 tissue samples differed between the real-time RT-LAMP and this real-time RT-PCR, confirming the reliability of these methods. This study indicated that the real-time RT-LAMP is simpler, less time-consuming, and more convenient than the real-time RT-PCR. With its high sensitivity, specificity, and convenience, the real-time RT-LAMP is a practical molecular diagnostic method for rapid and quantitative detection of DTMUV infection in a resource-limited setting.

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Accession: 052241870

Download citation: RISBibTeXText

PMID: 22445388

DOI: 10.1016/j.jviromet.2012.03.007


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