›› 2011, Vol. 38 ›› Issue (1): 198-200.

• 疾病防治 • 上一篇    下一篇

猪繁殖与呼吸综合征病毒变异野毒株与JXA1-R疫苗毒株快速鉴别方法的建立

何玲,裴仉福   

  1. (广东大华农动物保健品股份有限公司,广东新兴 527400)
  • 收稿日期:1900-01-01 修回日期:2010-11-07 出版日期:2011-01-01 发布日期:2011-01-01

Establishment of Distinguishing Method on Detecting Porcine Reproductive and Respiratory Syndrome Virus JXA1 and JXA1-R Strain

HE Ling,PEI Zhang-fu   

  1. (Guangdong Dahuanong Animal Health Products Co.Ltd.,Xinxing 527400, China)
  • Received:1900-01-01 Revised:2010-11-07 Online:2011-01-01 Published:2011-01-01

摘要: 根据猪繁殖与呼吸综合征病毒(porcine reproductive and respiratory syndrome virus,PRRSV)变异野毒JXA1的基因变异序列和疫苗株JXA1-R的基因遗传标志设计合成了2对特异性引物,结合快速RNA抽提试剂和一步法RT-PCR,建立了JXA1变异野毒与JXA1-R疫苗毒的快速鉴别体系,其目的片段大小分别为400、290 bp,该方法对猪瘟病毒、猪细小病毒、猪圆环病毒2型、猪伪狂犬病病毒的PCR检测结果均为阴性;对JXA1变异野毒与JXA1-R疫苗毒RNA的最低检测量分别为103、104拷贝/μL。该方法敏感、特异,适用于临床样品的检测。

关键词: PRRSV 变异株; JXA1-R; RT-PCR

Abstract: Based on the variant sequences of PRRSV JXA1 strain and the genetic markers of JXA1-R strain,two pairs of primers were designed and synthesized,and RT-PCR methods were established for detecting the two viruses with specific gene fragments of 400 bp and 290 bp.There was no cross-reactions with those clinically relevant pathogens,such as classical swine fever virus, porcine pseudorabies virus, porcine circovirus type 2, porcine parvovirus. The sensitivity tests showed that the assay could detect 103 copies/μL RNA of JXA1 and 104 copies/μL RNA of JXA1-R.The RT-PCR established in this study, with high specificity and sensitivity,is very suit for clinic-sample detection.

Key words: PRRSV variant strain; JXA1-R; reverse transcriptase polymerase chain reaction(RT-PCR)

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