套式PCR检测蚊体内疟原虫的研究

目的建立一种敏感、特异而快速的检测蚊体内疟原虫的方法。方法采用套式PCR方法,对人工感染间日疟原虫的嗜人按蚊、感染恶性疟和混合感染间日疟与恶性疟的大劣按蚊以及流行季节现场捕获的中华按蚊体内的疟原虫进行检测。结果28批人工感染间日疟原虫的嗜人按蚊、2批人工感染恶性疟的大劣按蚊和1批混合感染间日疟与恶性疟的大劣按蚊的检测结果与镜检结果符合率为100%;589只现场捕获的中华按蚊中,发现间日疟原虫阳性2只,阳性率为0.34%。结论本方法能快速而敏感地检出蚊体内不同种疟原虫。

Detection of Plasmodium sporozoites in mosquitoes by nested-PCR

Objective To establish a fast and sensitive method to detect Plasmodium sporozoites in mosquitoes. Methods Anopheles anthropophagus (An.a) artificially infected with Plasmodium vivax (P.v), Anopheles dirus (An.d) infected with Plasmodium falciparum (P.f) and both of P.v and P.f, field mosquitoes of Anopheles sinensis (An.s) captured in epidemic seasons were detected by nested-PCR. Results The results of 28 batches of An.a infected with P.v, 2 batches of An.d with P.f and 1 batch of An.d mixed with P.v and P.f by nested-PCR were accorded with the microscopical examination absolutely. Two positives of 589 An.s field mosquitoes were discovered with a positive rate of 0.34%. Conclusion The nested-PCR is fast and sensitive for detecting different species of Plasmodium in mosquitoes.