Polymorphism of Human FcγRIIa and Its Association with P. Falciparum Density and Efficacy of Dihydroartemisinin- Piperaquine

Sylvia Sance Marantina
Din Syafruddin
Heri Wibowo
Inge Sutanto
Puji Budi Setia Asih + 2 penulis lainnya
Suradi Suradi
Ismail E. Prayitno
April 2016  •  DOI: 10.23886/ejki.4.5907.37-43


FcγRlla dimorphism has been related to the ability of the host to eliminate malaria parasite so it is necessary to investigate the allele polymorphism FcγRlla of population in malaria-endemic areas in Indonesia in order to know the role of immunity in eliminating malaria parasite. A total of 120 samples of Dried Blood Spot (DBS) falciparum malaria acquired from DHP drug efficacy studies in 5 regions in Indonesia were analyzed by Polymerase Chain Reaction (PCR) and sequencing, to look at variants of FcγRIIa-131 allele and its Association with Parasite DensityandEfficacy ofDihydroartemisinin- Piperaquine. The FcγRIIa gene analysis indicated that genotype RH has the highest frequency (50.8%) compared to RR (17.5%) and HH (31.7%). Allele R131 showed a protective effect against High Density Parasitemia (HDP) (>5000 parasites/μL; odds ratio [OR]= 0.133, 95% confidence interval [CI]= 0.053–0.334, P< 0.001) and associated with longer gametocytes carrier clearance time (> 72 hours; Relative Risk [RR]= 1,571, 95% confidence interval [CI]= 1,005–2,456, P= 0.090). .

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