摘要
目的了解新疆伊犁地区马群中博尔纳病病毒（BDV）的流行状况，分析该病毒的种系来源。方法采用改进的巢式反转录PCR（nRT-PCR）方法对新疆伊犁地区120匹马的外周血单个核细胞（PBMC）及脑组织中的BDV p24基因片段进行检测，对阳性产物进行基因序列测定和同源性分析。结果有3匹马外周血和脑组织中同时检测到BDV，阳性率为2．5％（3／120）。扩增产物序列与其他国外马源BDV分离株同源性〉93％，与标准株He／80同源性达到98％以上。结论新疆伊犁地区马群中存在BDV的自然感染。该地区BDV流行株与标准株He／80存在高度的同源性。
Objective To investigate the epidemiological pattern of Borna disease virus （BDV） infection in horses and to analyze the phylogenetic tree of derived BDV in Yili, Xinjiang. Methods We established a modified nested RT-PCR （nRT-PCR） to detect BDV p24 segment in peripheral blood mononuclear cells （PBMCs） and brain tissues of 120 horses in Yili, Xinjiang. Positive products were analyzed by sequencing and homology analysis. Results The positive rate of BDV infection was 2.5 % in both PMBCs and brain tissues at the same time. The gene sequence revealed in positive PCR samples was more than 93 %, identical to that of BDV derived from horses in other countries. We also noticed a high degree of identity （ 〉 98 % ） to standard strain He/80 in gene sequence of positive PCR samples. Conclusion Our study found the presence of BDV natural infection in horses in Yili. The endemic BDV had a high degree of identity to standard strain He/80.
出处
《中华流行病学杂志》
CAS
CSCD
北大核心
2008年第11期1106-1109,共4页
Chinese Journal of Epidemiology
基金
国家“863”高技术研究发展计划资助项目（2006AA02Z196）
