Development of a Polymerase Chain Reaction (PCR) method based on amplification of mitochondrial DNA to detect Plasmodium falciparum and Plasmodium vivax.
In this study we standardized a new technical approach in which the target mitochondrial DNA sequence (mtDNA) is amplified using a simple but sensitive PCR method as a tool to detect Plasmodium falciparum and Plasmodium vivax. Specific primers were designed to hybridize with cytochrome c oxidase genes of P. falciparum (cox III) and P. vivax (cox I). Amplification products were obtained for all positive samples, presenting homology only for species-specific mtDNA. Sensitivity and specificity were 100%. The applicability of the method was tested in a cross-sectional study, in which 88 blood samples from individuals naturally exposed to malaria in the Brazilian Amazon region were analyzed. Based on the results, the sensitivity and specificity were 100% and 88.3%, respectively. This simple and sensitive PCR method can be useful in specific situations and in different settings of malaria management, in endemic as well as non-endemic areas (travelers), and in clinical or epidemiological studies, with applications in malaria control programs.
Cunha
Maristela G
MG
Instituto de Ciências Biológicas, Universidade Federal do Pará, Pará, Brazil. mgcunha@ufpa.br
Medina
Tiago S
TS
Oliveira
Salma G
SG
Marinho
Anderson N
AN
Póvoa
Marinete M
MM
Ribeiro-dos-Santos
Andrea K C
AK
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D001938:Brazil; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D017931:DNA Primers / Q000235:genetics; D004272:DNA, Mitochondrial / Q000235:genetics*; D003576:Electron Transport Complex IV / Q000235:genetics; D006801:Humans; D008288:Malaria / Q000175:diagnosis* / Q000469:parasitology*; D008875:Middle Aged; D010963:Plasmodium falciparum / Q000235:genetics / Q000302:isolation & purification*; D010966:Plasmodium vivax / Q000235:genetics / Q000302:isolation & purification*; D016133:Polymerase Chain Reaction / Q000379:methods* / Q000592:standards; D015800:Protozoan Proteins / Q000235:genetics; D012680:Sensitivity and Specificity; D055815:Young Adult
D017931:DNA Primers; D004272:DNA, Mitochondrial; D015800:Protozoan Proteins; D003576:Electron Transport Complex IV