畜牧兽医学报 ›› 2010, Vol. 41 ›› Issue (11): 1442-1446.

• 预防兽医 • 上一篇    下一篇

兔出血症病毒RT-PCR 检测方法的建立及其临床应用

胡波,魏后军,王芳*,范志宇,徐鹏,徐为中,薛家宾,何孔旺   

  1. 江苏省农业科学院兽医研究所 农业部动物疫病诊断与免疫重点开放实验室 国家兽用生物制品工程技术研究中心,南京210014
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-11-25 发布日期:2010-11-25
  • 通讯作者: 王芳

Establishment and Clinical Application of RT-PCR Assay for Detection of Rabbit Hemorrhagic Disease Virus

HU Bo, WEI Hou-jun, WANG Fang*, FAN Zhi-yu, XU Peng, XU Wei-zhong,
XUE Jia-bin, HE Kong-wang
  

  1. Key Laboratory of Animal Diseases Diagnostic and Immunology of Ministry of Agriculture, National Center for Engineering Research of Veterinary Bioproducts, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-11-25 Published:2010-11-25

摘要: 本研究旨在建立检测兔群鼻拭子中兔出血症病毒(RHDV)的RT-PCR方法,研究健康免疫兔群是否存在携带RHDV现象。根据GenBank上公布的RHDV vp60基因保守序列,设计了1对特异性引物,经cDNA的合成和PCR扩增,目的片段大小为591 bp。结果表明该方法能检出最小RNA浓度为2.40 ng·μL-1,敏感性为血凝试验(HA)的8×103倍。通过对自5个省采集的168份健康免疫兔鼻拭子样品进行检测,结果显示,阳性样品为22份,阳性率为13.09%。试验表明:RT-PCR方法能快速、敏感地从健康免疫兔鼻拭子样品中检出RHDV,提示健康免疫兔群存在携带RHDV的现象,该方法适合临床进行大规模病原学检测和兔群携带病毒的调查,具有良好的应用前景。

关键词: 兔出血症病毒, RT-PCR, 鼻拭子, 病毒携带

Abstract: The RT-PCR assay for detection of Rabbit hemorrhagic disease virus (RHDV) in nasal swab specimens collected from rabbits was developed for the research of virus carrying in healthy immunized rabbit. A pair of primers were designed according to the conserved sequences of vp60 from RHDV published in GenBank, and a 591 bp segment was amplified by RT-PCR. The least amount of RHDV could be detected was 2.40 ng·μL-1, and the sensitivity of the RT-PCR was 8×103 times higher than that of HA method. 168 nasal swabs collected from 5 provinces was detected by the assay, the results showed that the positive samples was 22 and the positive rate was 13.09%. These results indicated that the phenomenon of virus carrying in healthy immunized rabbit and the developed RT-PCR might be a promising approach in clinical screening, detection and carrying research of RHDV in a large number of immunized rabbit nasal swabs.

Key words: rabbit hemorrhagic disease virus (RHDV), RT-PCR, nasal swab, virus carrying