青海天峻地区人和羊源细粒棘球蚴流行株基因分型及基因多态性研究  

Genotyping and gene nucleotide polymorphism of epidemic strain of Echinococcus granulosus metacestode from humans and sheep in Tianjun region,Qinghai Province

作　　者：张学勇[1,2] 简莹娜[1,2] 李秀萍 韩秀敏[3] 才旦卓玛[4] 李福寿[4] 马利青 ZHANG Xue-yong;JIAN Ying-na;LI Xiu-ping;HAN Xiu-ming;CAIDAN Zhuo-ma;LI Fu-shou;MA Li-qing(Academy of Animal and Veterinary Sciences, Qinghai University, State Key Laboratory of Plateau Ecology and Agriculture, Xining 810016, China;Qinghai Academy of Animal Sciences and Veterinary Medicine, China;Qinghai Provincial People＇s Hospital, China;Tianjun County Animal Husbandry and Veterinary Station, Qinghai Province, China)

机构地区：[1]青海大学畜牧兽医科学院省部共建三江源生态与高原农牧业国家重点实验室,西宁810016 [2]青海省畜牧兽医科学院 [3]青海省人民医院 [4]青海省天峻县畜牧兽医工作站

出　　处：《中国血吸虫病防治杂志》2018年第2期173-178,共6页Chinese Journal of Schistosomiasis Control

基　　金：国家绒毛用羊产业技术体系项目(CARS-39-16)

摘　　要：目的解析青海天峻地区人和绵羊细粒棘球蚴流行株的基因型及基因多态性。方法根据Gen Bank公布的细粒棘球绦虫线粒体基因组序列,分别针对cox1和nad1基因设计特异性引物,对16份绵羊源和2份人源细粒棘球蚴分离株样品进行PCR扩增、测序及cox1和nad1基因核苷酸序列多态性和单倍型分析。结果 18株细粒棘球蚴分离株均属于G1型。其中cox1基因单倍型共有9种,变异位点16个,单倍型序列之间碱基差异0~5个,变异率达0.31%;nad1基因单倍型共有7种,涉及变异位点共15个,单倍型序列之间碱基差异1~8个,变异率达0.89%。结论青海天峻地区人和绵羊细粒棘球蚴流行株为G1型,其cox1基因多态性较nad1基因多态性丰富;cox1基因用于细粒棘球蚴分离株间核苷酸多态性分析的分辨率较高。Objective To understand the genotypes and nucleotide polymorphisms of Echinococcus granulosus metacestode from humans and sheep in Tianjun region,Qinghai Province.Methods The specific primers were designed according to the cox1 and nad1 genes of E. granulosus mitochondrial genome sequences accessed by Gen Bank. The primers were used to detect the cyst samples from 16 sheep and 2 humans infected with E. granulosus in Tianjun region of Qinghai Province by PCR,then the PCR amplification products were sequenced,the genotypes and nucleotide polymorphisms of the cox1 and nad1 genes were analyzed.Results The 18 isolated samples all belonged to E. granulosus G1 genotype. Among all the isolates,9 haplotypes existed in the cox1 gene with 16 nucleotide mutation sites,and there were 0 to 5 nucleotide differences with the highest variation rate of 0.31%,whereas 7 haplotypes occurred with 15 nucleotide mutation sites,and there were 1 to 8 nucleotide differences with the highest variation rate of 0.89% for the nad1 gene.Conclusions The epidemic genotype of E. granulosus is G1 in humans and sheep in Tianjun region of Qinghai Province,and the nucleotide polymorphisms of the cox1 gene were more abundant than those of the nad1 gene,and the resolution of the nucleotide polymorphisms of cox1 gene is higher than that of the nad1 gene used in E. granulosus isolates.

关 键 词：细粒棘球蚴 cox1基因 nad1基因 基因分型 基因多态性 

分 类 号：R383.33[医药卫生—医学寄生虫学]