A multiplex RT-PCR for rapid and simultaneous detection of porcine teschovirus, classical swine fever virus, and porcine reproductive and respiratory syndrome virus in clinical specimens

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• 作者：Shanshan Liu^a ; Yarong Zhao^b ; Quanbo Hu^a ; Chaochao Lv^b ; Chaofan Zhang^a ; Rui Zhao^b ; Feng Hu^a ; Wencheng Lin^a ; Shangjin Cui^a ; ^{cuishangjin@yahoo.cn} ; ^{cuishangjin@yahoo.com.cn}
• 关键词：CSFV ; mRT-PCR ; PRRSV ; PTV
• 刊名：Journal of Virological Methods
• 出版年：2011
• 出版时间：March 2011
• 年：2011
• 卷：172
• 期：1-2
• 页码：88-92
• 全文大小：278 K

文摘

A multiplex RT-PCR (mRT-PCR) assay was developed and evaluated for its ability to detect multiple viral infections of swine simultaneously. One pair of primers was selected carefully for each of the following three RNA viruses: porcine reproductive and respiratory syndrome virus (PRRSV), classical swine fever virus (CSFV), and porcine teschovirus (PTV). Each target produced a specific amplicon with a size of 451 bp (PRRSV), 343 bp (CSFV), or 163 bp (PTV). The sensitivity of the mRT-PCR using purified plasmid constructs containing the specific viral target fragments was 2.02 × 10², 2.90 × 10³, and 6.16 × 10³ copies for PRRSV, CSFV, and PTV, respectively. Among 69 clinical samples from Heilongjiang, Jilin, and Henan provinces, co-infection by PRRSV and CSFV was 4.4 % , co-infection by PRRSV and PTV was 11.6 % , co-infection by PTV and CSFV was 13.0 % , and co-infection by the three viruses was 8.7 % . In conclusion, the mRT-PCR should be useful for routine molecular diagnosis and epidemiology.