辽宁省部分地区2006年虫媒病毒分离鉴定

目的 调查辽宁省虫媒病毒的种类及分布.方法 2006年8月在辽宁省沈阳市、营口市、盘锦市、锦州市和丹东市采集蚊虫标本,利用组织细胞培养分离病毒,对病毒分离物进行血清学和分子生物学鉴定.结果 5个市共采集蚊虫标本5410只,分离到8株阳性分离物,经鉴定其中3株(LN0684、LN0688、LN0689)为版纳病毒,1株(LN0636)为甲病毒属盖塔病毒,另外4株尚在鉴定.新分离的版纳病毒与我国此前的分离株处于同一个进化簇,核苷酸同源性91.2%～94.7%.新分离的盖塔病毒与韩国分离株(swine)在一个进化枝上,核苷酸同源性为99.2%,与俄罗斯分离株、中国大陆分离株及台湾分离株的核苷酸同源性在95%～99%之间.结论 2006年在辽宁省分离到3株版纳病毒、1株盖塔病毒和4株未知虫媒病毒.版纳病毒、盖塔病毒为辽宁省首次分离;盖塔病毒核苷酸同源性和韩国分离株最近.

Isolation and identification of arboviruses from mosquito pools in some regions of Liaoning province,China

Objective To isolate and identify arboviruses from mosquito pools in some regions of Liaoning province.Methods Mosquitoes were collected from Shenyang,Yingkou,Panjin,Jinzhou and Dandong cities of Liaoning province in 2006.Viruses were isolated by inoculating the specimens onto C6/ 36 and BHK-21cells.The new isolates were identified using serological and molecular biological methods.Results 5410 mosquitoes were collected from the five cities in total.Three isolates produced CPE in C6/ 36 cell and five isolates produced CPE in both C6/36 and BI-IK-21 cell.Three isolates (LN0684,LN0688 and LN0689) were identified as Banna virus and one isolate (LN0636) was identified as Getah virus.Phylogenetic analysis showed that the three Banna virus strains were clustered into the same evolution branch as the other Chinese isolates.The identity of nucleotide sequence was between 91.2% and 94.7%,compared with other Banna virus strains.The new isolated Getah virus was clustered into the same branch with the strain of South Korea (swine).The identity of nucleotide sequence was 99.2%,when comparing with the strain of South Korea and was 95% to 99% with the strains fi'om Russia,mainland of China and Taiwan region.Conehmion Eight virus isolates,including three Banna virus,one Getah virus and four unknown virus strains were isolated from mosquitoes in Liaoning province.Banna virus and Getah virus were reported for the first time in Liaoning province,while Getah virus showed the highest nucleotide homology with the South Korea strains.