Rapid identification of chloroquine and atovaquone drug resistance in Plasmodium falciparum using high-resolution melt polymerase chain reaction.

Abstract:

BACKGROUND:Drug resistance determination for Plasmodium falciparum infections are important to determining the type of treatment to be given. Besides in vivo experiments, molecular methods, such as sequencing and PCR, are now increasingly being used. Here a cheaper alternative to sequencing or the use of multiplex 5'nuclease PCR assay for detection and differentiation of drug resistance haplotypes for chloroquine and atovaquone using polymerase chain reaction-high resolution melt (PCR-HRM) is reported. METHODS:Separate PCR-HRM assays were designed for the detection and differentiation of chloroquine and atovaquone drug resistance haplotypes in P. falciparum. PCR was conducted on a thermal cycler and melt curves generated using a LightScanner. These were tested against reference strains of P. falciparum from MR4 as well as 53 local isolates. RESULTS:The PCR-HRM assays are able to detect and differentiate between the various haplotypes consistently. These assays can also be used to detect new variants. CONCLUSIONS:PCR-HRM is an inexpensive option for the determination of drug resistance profile in P. falciparum and will see increasing use as an alternative to sequencing and 5'nuclease PCR assays in reference laboratories or once PCR systems that are able to conduct HRM become commonplace.

journal_name

Malar J

journal_title

Malaria journal

authors

Gan LS,Loh JP

doi

10.1186/1475-2875-9-134

subject

Has Abstract

pub_date

2010-05-21 00:00:00

pages

134

issn

1475-2875

pii

1475-2875-9-134

journal_volume

9

pub_type

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