Isolation and identification of Japanese encephalitis virus in the experimental minipigs
10.3969.j.issn.1671-7856.2017.03.011
- VernacularTitle:实验用小型猪乙型脑炎病毒的分离鉴定
- Author:
Ji WANG
;
Rui FU
;
Xiaobo LI
;
Shujing WANG
;
Wei GONG
;
Li WEI
;
Bingfei YUE
;
Zhengming HE
- Keywords:
Japanese encephalitis virus;
JEV;
Isolation;
Identification
- From:
Chinese Journal of Comparative Medicine
2017;27(3):57-62
- CountryChina
- Language:Chinese
-
Abstract:
Objective To understand the characteristics of minipigs infected withJapanese encephalitis virus(JEV).Methods After the brain tissues were treated, the pig brain tissue treatment solution was inoculated with BHK21 cells.Then, virus culture,indirect immunofluorescence assay, neutralization test, electron microscopic observation, and reverse transcription-polymerase chain reaction (RT-PCR) amplification of the new isolate E segment and PrM segment nucleotide sequence were performed and the genotype was identified.Results BHK21 cells were inoculated into 25 pigbrain tissues.Among them, three tissue-treated fluid couldinduce shrinkage and aggregation of BHK21 cells, and immunofluorescence staining showed strong green fluorescence response.The results of neutralization test showed that the neutralization titer of these three new isolates was 1:64, and the size of the virus particles was about 40nm under the electron microscope.The homology of both RT-PCR product sequencing results and E-segment of vaccine strain were 95%.Three new isolates were type GIII JEV.Conclusion The results ofthisstudydemonstrate that there is G III type Japanese encephalitis virus infection in the minipig farm.
