›› 2019, Vol. 46 ›› Issue (3): 891-897.doi: 10.16431/j.cnki.1671-7236.2019.03.030

• Preventive Veterinary Medicine • Previous Articles     Next Articles

Isolation,Identification and Biological Characterization Analysis of One Strain Canine Parainfluenza Virus

LIU Chang1,2,3, QIN Tong2,3, LIANG Lin2,3, YOU Xinyue2,3, WANG Chunfeng1, QIAN Aidong1, LI Jinxiang2,3, CUI Shangjin1,2,3   

  1. 1. College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China;
    2. Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
    3. Scientific Observation and Experiment Station of Veterinary Drugs and Diagnostic Technology of Beijing, Ministry of Agriculture, Beijing 100193, China
  • Received:2018-07-03 Online:2019-03-20 Published:2019-03-20

Abstract:

The aim of this study was to isolate and identify the canine parainfluenza virus (CPIV),and analyze its biological characteristics.CPIV positive canine lung tissue was inoculated into Vero cells.CPE were observed after four blind passages,then the cell culture fluid after 72 h was assayed for further RT-PCR identification,electron microscopy,HA and biological characteristic experiments.At the same time,N gene of CPIV was amplified,and phylogenetic tree was constructed.The result showed that one CPIV was successfully isolated and named as CPIV-BJ01.The result of RT-PCR showed that there was a specific target fragment of 534 bp.The electron microscopic observation showed that the virus were circular,enveloped and between 80 to 200 nm in diameter.It could agglutinate 1% porcine erythrocytes at 4 or 37 ℃.The virus was sensitive to high temperature and UV irradiation.The one-step growth curve showed that the virus replicated at a high speed between 12 to 48 h.Compared with 19 representative CPIV N genes,the nucleotide sequence homology analysis was 97.1% to 99.8%.The CPIV-BJ01 strain was closely genetically related to strain PIV5 1168-1 (GenBank accession No.:KC237064.1) and PIV5 ZJQ 221(GenBank accession No.:KX100034.1).

Key words: canine parainfluenza virus (CPIV); isolation and identification; biological characteristics; evolutionary analysis

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