文章摘要
王晓光,雷永良,陶晓燕,李浩,申辛欣,于鹏程,尹翠萍,孟胜利,王欣莹,唐青.浙江省不同宿主来源狂犬病病毒N基因分子特征分析[J].中华流行病学杂志,2014,35(7):837-841
浙江省不同宿主来源狂犬病病毒N基因分子特征分析
Sequencing and analysis of N gene of street rabies virus isolated from different hosts in Zhejiang province
收稿日期:2014-02-18  出版日期:2014-09-01
DOI:10.3760/cma.j.issn.0254-6450.2014.07.018
中文关键词: 狂犬病病毒  宿主动物  基因  序列分析
英文关键词: Rabies virus  Host  Gene  Sequencing analyses
基金项目:国家科技重大专项(2012ZX10004215);公益性行业(农业)科研专项(201103032)
作者单位E-mail
王晓光 浙江省丽水市疾病预防控制中心, 323000 qtang04@sina.com 
雷永良 浙江省丽水市疾病预防控制中心, 323000  
陶晓燕 中国疾病预防控制中心病毒病预防控制所  
李浩 中国疾病预防控制中心病毒病预防控制所  
申辛欣 中国疾病预防控制中心病毒病预防控制所  
于鹏程 中国疾病预防控制中心病毒病预防控制所  
尹翠萍 中国疾病预防控制中心病毒病预防控制所  
孟胜利 武汉生物制品研究所  
王欣莹 浙江省疾病预防控制中心  
唐青 中国疾病预防控制中心病毒病预防控制所 qtang04@sina.com 
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中文摘要:
      目的 测定浙江省不同宿主(人、鼬獾、犬)来源的狂犬病病毒街毒株N基因序列, 分析病毒遗传变异特征及其与流行的关系。方法 采用直接免疫荧光试验和反转录聚合酶链式反应检测狂犬病病毒阳性标本N基因核苷酸序列, 利用生物信息学软件分析基因序列和编码蛋白。结果 共获得浙江省2 个人源、5 个鼬獾源和11 个犬源狂犬病病毒街毒株N基因核苷酸序列, 18 个核苷酸和氨基酸序列同源性在89.7%~100.0%和98.4%~100.0%, N蛋白一级结构上绝大部分为稳定区域, 编码基因的核苷酸变异多为无义突变, 系统发育分析显示18 个街毒株均属于传统的基因1 型。结论 浙江省不同宿主来源狂犬病病毒的流行具有地域性特征, 同类宿主动物病毒株或来自同一县域/相邻县域的毒株在地理位置上最为近缘, 但人源株病毒更具有复杂性。浙江省狂犬病病毒街毒株的流行具有通过犬向鼬獾和人传播, 并在犬、鼬獾中跨区域循环传播的特点。
英文摘要:
      Objective To elucidate the characteristics of genetic variability and its relationship with prevalence, through sequencing and analysis of N gene among street rabies virus isolated from different hosts (homo sapiens, ferret badger, dog) in Zhejiang province. Methods Samples were screened and confirmed by direct fluorescence assay and reverse transcript PCR. Sequences were analyzed using bio-information software. Results Eighteen street rabies virus strains were identified, including 2 from homo sapiens, 5 from ferret badger, and 11 from dog. Similarities of N gene and N protein were calculated to be 89.7%-100.0% and 98.4%-100.0% respectively. Mutations occurred in N gene were almost non-sense mutations. In addition, Data from phylogenetic analysis showed that all these strains could be classified into traditional genotype 1. Conclusion The prevalence of rabies viruses among different hosts in Zhejiang province had certain regional properties. Rabies viruses isolated from the same kind of host or from the same/adjacent county/counties had the closest relationship. However, the characteristics of rabies virus prevalent in homo sapiens were somewhat complicated. In summary, the transmission of street rabies virus in Zhejiang province was from dogs to ferret badgers and homo sapiens, and the virus could circulate and cross-regional transmit among dogs and ferret badgers.
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