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Kelch 13 propeller gene polymorphism among Plasmodium falciparum isolates in Lagos, Nigeria: Molecular Epidemiologic Study
Author(s) -
Igbasi Uche,
Oyibo Wellington,
Omilabu Sunday,
Quan Hong,
Chen ShenBo,
Shen HaiMo,
Chen JunHu,
Zhou Xiaog
Publication year - 2019
Publication title -
tropical medicine and international health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.056
H-Index - 114
eISSN - 1365-3156
pISSN - 1360-2276
DOI - 10.1111/tmi.13273
Subject(s) - plasmodium falciparum , biology , haplotype , genotype , malaria , artemisinin , polymerase chain reaction , nested polymerase chain reaction , gene , population , genetics , apicomplexa , virology , polymorphism (computer science) , medicine , immunology , environmental health
Objective To assess polymorphism in Kelch 13 gene of Plasmodium falciparum isolates in Lagos, Nigeria. Methods 195 Plasmodium falciparum ‐positive dried blood spots collected from individuals that accessed diagnostic care at some health facilities and during community surveys across several Local Government Areas of Lagos State, Nigeria, were investigated for the presence of mutations in the K13 gene by nested polymerase chain reaction (PCR) using haplotype‐specific probes and sequencing. Results Three mutant genotypes of K13 gene were observed: A578S in 0.5%, D464N in 0.5% and Q613H in 1.5%. The frequency of K13 polymorphism was 3.1%, while the remaining parasite population had the wild K13 propeller genes. Conclusion No validated Kelch 13 polymorphism associated with artemisinin resistance was seen among P. falciparum isolates from Lagos, Nigeria. As no clinical study was done, this could not be correlated with artemisinin sensitivity.