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PCR AMPLIFICATION AND PHYLOGENETIC ANALYSIS OF THE PARTIAL GENE SEGMENT OF 56 KDA PROTEIN OF ORIENTIA TSUTSUGAMUSHI FROM THE FIRST CASE OF SCRUB TYPHUS IN HEFEI CITY
Author(s): 
Pages: 31-34
Year: Issue:  1
Journal: Acta Parasitology et Medica Entomologica Sinica

Keyword:  恙虫病东方体56 kDa外膜蛋白序列分析进化树;
Abstract: 采用恙虫病胶体金快速诊断试剂对安徽省合肥市一例不明原因发热病人血清进行检测,从该病人血块中提取DNA为模板,用恙虫病东方体特异性引物,PCR扩增出56 kDa外膜蛋白部分基因,将扩增目的片段克隆至T载体进行测序并进行基因进化分析.结果显示,该病人血清中抗恙虫病东方体总抗体、抗东方体IgG及抗东方体IgM阳性;患者给予强力霉素治疗后迅速退热.采用PCR从病人血标本中扩增出1 320 bp东方体56 kDa外膜蛋白基因片段,将基因片段测序结果在NCBI上做BLAST比对,显示该基因序列与昆明株和内蒙古株同源基因序列完全一致;进化树分析显示该序列与标准株Kuroki位于同一个分支.研究确认该发热病例为合肥市报告的首例恙虫病,其感染的恙虫病东方体为Kuroki型,推测合肥市可能为恙虫病新疫区.
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