中国寄生虫学与寄生虫病杂志 ›› 2014, Vol. 32 ›› Issue (4): 17-318-319.

• 研究简报 • 上一篇    下一篇

输入性恶性疟原虫Pf60.1基因多态性初步研究

吴凯,周水茂,杨燕,王重新,徐明星   

  1. 武汉市疾病预防控制中心,武汉 430015
  • 出版日期:2014-08-30 发布日期:2014-10-31

An Analysis on Pf60.1 Gene Polymorphism of Plasmodium falciparum from Imported Cases

WU Kai,ZHOU Shui-mao,YANG Yan,WANG Chong-xin,XU Ming-xing   

  1. Centre for Disease Prevention and Control of Wuhan,Wuhan 430015,China
  • Online:2014-08-30 Published:2014-10-31

摘要: 采用PCR方法扩增武汉市2010-2013年经镜检和巢式PCR确诊的101份国外输入性恶性疟病例血样的Pf60.1基因,研究Pf60.1基因多态性。PCR结果显示,共92份血样扩增出3类基因片段,其中52份扩增出313 bp片段,占56.5%;34份扩增出340 bp片段,占37.0%;6份扩增出313 bp和340 bp混合型片段,占6.5%。83份自非洲地区输入病例血样中,46份扩增出313 bp片段,占55.4%,31份扩增出340 bp片段,占37.1%,6份扩增出混合型片段,占7.2%;9份自东南亚地区输入病例血样中,6份扩增出313 bp片段,3份扩增出340 bp片段。提示输入性恶性疟Pf60.1基因以313 bp基因型较多,并且可能存在多克隆感染情况。

关键词: 输入性病例, 恶性疟原虫, Pf60.1, 基因多态性

Abstract: One hundred and one imported falciparum malaria cases in Wuhan City were confirmed by microscopy and Nest-PCR, and the blood samples were collected. The Pf60.1 gene was amplified by PCR. Among 101 blood samples, three Pf60.1 fragments [313 bp (56.5%, 52/92), 340 bp (37.0%, 34/92), 313 bp+340 bp (6.5%, 6/92)] were amplified from 92 samples. Among 83 blood samples from patients returning from Africa, 313 bp fragment were found in 46 samples (55.4%, 46/83), 340 bp fragment were found in 31 samples (37.1%, 31/83), and 7.2% (6/83) was mixed-fragment (313 bp+340 bp). Among 9 samples from southeast Asia, 6 samples were with 313 bp fragment and 3 samples with 340 bp fragment. The results indicated that the most common genotype was 313 bp-genotype, and there would be polyclonal P. falciparum infections.

Key words: Imported case, Plasmodium falciparum, Pf60.1, Polymorphism