中国寄生虫学与寄生虫病杂志 ›› 1994, Vol. 12 ›› Issue (2): 111-114.

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聚合酶链反应检测恶性疟原虫的研究

詹斌,张龙兴,王聚君,冯晓平   

  1. 中国预防医学科学院寄生虫病研究所
  • 出版日期:1994-05-31 发布日期:2017-01-06
  • 基金资助:
    国家自然科学青年基金

DETECTION OF PLASMODIUM FALCIPARUM BY POLYMERASE CHAIN REACTION (PCR)

  • Online:1994-05-31 Published:2017-01-06

摘要: 根据编码恶性疟原虫红细胞结合抗原(EBA-175)的部分DNA片段而设计合成寡核苷酸引物并进行多聚酶链反应(PCR)以检测体外培养的恶性疟原虫(P.f.)。扩增产物经琼脂糖凝胶电泳分析,可见扩增出了特异的492bp大小的DNA片段,而对间日疟原虫(P.v.)、食蟹猴疟原虫(P.c.)、约氏鼠疟原虫(P.y.)、伯氏鼠疟原虫(P.b.)及正常人血白细胞DNA不能扩增出此片段。本法可检原虫密度下限为20μl血中仅含10个原虫,具有高敏感性和特异性。

关键词: 恶性疟原虫, 聚合酶链反应

Abstract: A pair of primers were designed and synthesized based on the DNA fragment coded erythrocyte binding antigen (EBA 175) of Plasmodium falciparum ( P.f .) and polymerase chain reaction(PCR) was performed to detect P.f. cultured in vitro .The amplified products were analysed by agarose gel electrophoresis and a specific 492 bp DNA band was showed in P.f. infected blood sample,but no band showed in P.vivax, P.cynomolgi , P.yoelii and P.berghei infected blood samples,nor in normal one.The parasite densities detected by this method could be as minimal as 10 parasites/20μl blood.The PCR technique showed high sensitivity and specificity.

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