ArticleMalaria journal2024
Assessing the therapeutic efficacy of artemether-lumefantrine for uncomplicated malaria in Lagos, Nigeria: a comprehensive study on treatment response and resistance markers.
Article in Malaria journal, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.
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Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Spatio-temporal trends of artemisinin-based combination therapy efficacy from 2010 to 2024 in sub-Saharan Africa: a systematic review and meta-analysis.BMC infectious diseases · 2025Pooled it
- Efficacy of artemether-lumefantrine combination for the treatment of uncomplicated Plasmodium falciparum malaria after 16 years of its introduction into Ghana's antimalarial medicines policy.Malaria journal · 2026Article
- Prevalence of molecular markers related to artemisinin partial resistance and ACT partner drug resistance in the Plasmodium falciparum population in Kongo Central, DRC.Malaria journal · 2026Article
- Population pharmacokinetics of lumefantrine in pregnant and non-pregnant Nigerian women receiving efavirenz-based antiretroviral therapy.European journal of clinical pharmacology · 2026Article
- Haplotypes of Chloroquine Resistance Marker Genes Among Uncomplicated Malaria Cases in Lagos, Nigeria.Biochemical genetics · 2026Article
- Molecular Surveillance of Malaria in Nigeria Reveals a Low Frequency of Antimalarial Resistance Markers and Clonal Expansion of Chloroquine-Sensitive Infections.Open forum infectious diseases · 2026Article
- Capacity Building in Field Epidemiology in Sub Saharan Africa: Findings from Infectious Disease Field Epidemiology and Biostatistics in Africa (IDEA) Fellowship Program.Advances in medical education and practice · 2025Article
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8 authors.
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Abstract
backgroundThe burden of malaria persists in sub-Saharan Africa and the emergence of artemisinin resistance has introduced complexity to control efforts. Monitoring the efficacy of artemisinin-based treatment for malaria is crucial to address this challenge. This study assessed treatment efficacy of artemether-lumefantrine (AL) and genetic diversity of Plasmodium falciparum isolates in a Nigerian population.
methodsParticipants presenting with clinical symptoms of uncomplicated malaria at a health centre in Lagos, Nigeria, were screened for P. falciparum. Enrolled participants were treated with AL and monitored through scheduled check-up visits, clinical and laboratory examinations for 28 days. Parasite clearance and genetic diversity were assessed through polymerase chain reaction (PCR) analysis of merozoite surface proteins (msp1 and msp2). The prevalence of drug resistance mutations was assessed by P. falciparum multidrug resistance gene 1 (mdr1) genotyping followed by P. falciparum ubiquitin-specific protease 1 (ubp1) gene sequencing.
resultsThe PCR-uncorrected treatment outcome revealed 94.4% adequate clinical and parasitological response (ACPR) and 5.6% late parasitological failure (LPF) rates. After PCR correction, no suspected LPF case was detected and ACPR 67/67 (100%) was achieved in all the individuals. Moreover, a high prevalence of wild-type alleles for mdr1 N86Y (93.7%), and mdr1 D1246Y (87.5%) was observed. Genetic diversity analysis revealed predominant K1 allelic family for msp1 (90.2%) and FC27 for msp2 (64.4%). Estimated multiplicity of infection (MOI) was 1.7, with the highest MOI observed in the 5-15 years age group. ubp1 sequence analysis identified one nonsynonymous E1528D polymorphism at a low frequency (1.6%).
conclusionThe study demonstrated sustained efficacy of AL for treating uncomplicated P. falciparum malaria. Genetic diversity analysis revealed various allelic types, suggesting occurrences of polyclonal infections. Nonetheless, the detection of a significant ubp1 polymorphism could have future implications for the epidemiology of anti-malarial drug resistance in the population.
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