中国寄生虫学与寄生虫病杂志 ›› 1998, Vol. 16 ›› Issue (3): 164-167.

• 论著 • 上一篇    下一篇

套式PCR检测蚊体内疟原虫的敏感性与特异性

李凤舞; 牛春; 叶炳辉; 诸欣平; 陈佩惠   

  1. 1 首都医科大学寄生虫学教研室; 2 南京医科大学寄生虫学教研室
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1998-06-30 发布日期:1998-06-30

SENSITIVITY AND SPECIFICITY OF NESTED POLYMERASE CHAIN REACTION IN DETECTING PLASMODIUM VIVAX IN INFECTED MOSQUITOES

Li Fengwu1; Niu Chun1; Ye Binghui2; Zhu Xingping1; Chen Peihui1   

  1. 1 Department of Parasitology; Capital University of Medical Sciences; Beijing 100054 2 Department of Parasitology; Nanjing Medical University; Nanjing 210029
  • Received:1900-01-01 Revised:1900-01-01 Online:1998-06-30 Published:1998-06-30

摘要: 目的:分析套式聚合酶链反应技术检测蚊体内疟原虫的敏感性与特异性。方法:采用2对针对间日疟原虫小亚单位核糖体核糖核酸基因(SSUrDNA)的特异引物,利用套式PCR技术,从蚊体DNA样本中,扩增间日疟原虫SSUrDNA片段,进行间日疟原虫的检测。结果:扩增产物经琼脂糖凝胶电泳分析,可见扩增出特异的约121bp大小的DNA片段,估测每份蚊虫DNA样本中含有3个以上子孢子或100只蚊中含有1只阳性蚊即可得此片段,而对恶性疟原虫、食蟹猴疟原虫、约氏疟原虫及正常蚊虫DNA不能扩增出此片段。结论:此法具有高度的敏感性和特异性。

关键词: 间日疟原虫, 蚊虫, 套式PCR

Abstract: AIM: To study the sensitivity and specificity of nested polymerase chain reaction for detection of
Plasmodium vivax in infected mosquitoes. METHODS: Two pairs of primers specific to small subunit ribosomal DNA
of P.vivax were used to amplify the specific SSUrDNA 121 bp fragment of P.vivax for detecting P.vivax infected
mosquitoes with nested PCR. RESULTS: Nested PCR could detect as few as 3 sporozoites in one mosquito or 1
infected mosquito mixed with a group of 99 normal ones. In contrast, no such specific 121bp DNA band was detected in P. falciparum , P. cynomolgi, P. yoeliiyoelii infected samples, nor in normal mosquito. CONCLUSION: The nested PCR technique we established showed high sensitivity and specificity

Key words: Plasmodium vivax, mosquito, nested PCR