ArticleInfectious diseases of poverty2020
High multiple mutations of Plasmodium falciparum-resistant genotypes to sulphadoxine-pyrimethamine in Lagos, Nigeria.
Article in Infectious diseases of poverty, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 2 of them syntheses that pooled it.
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Who cites it
34 citing papers in PubMed, 2 syntheses or guidelines pooled it, 49 citations in OpenAlex.
- Molecular surveillance of antimalarial drug resistance genes in Nigeria: a systematic review and roadmap to malaria elimination.BMC medical genomics · 2025Pooled it
- Prevalence of antimalaria drug resistance-conferring mutations associated with sulphadoxine-pyrimethamineine-resistant Plasmodium falciparum in East Africa: a systematic review and meta-analysis.Annals of clinical microbiology and antimicrobials · 2025Pooled it
- Randomized, placebo-controlled, double-blind phase I trial of co-administered pyronaridine and piperaquine in healthy adults of sub-Saharan origin.Clinical and translational science · 2024Trial
- Unanticipated CNS Safety Signal in a Placebo-Controlled, Randomized Trial of Co-Administered Atovaquone-Proguanil and Amodiaquine.Clinical pharmacology and therapeutics · 2022Trial
- Molecular markers of antimalarial drug resistance in pfk13, pfmdr1, pfdhfr, and pfdhps genes of Plasmodium falciparum in a rural municipality in Cubal, Benguela Province, Angola (2022-2023).Malaria journal · 2026Article
- Targeted Sequencing Identifies SNPs Associated with Antimalarial Drug Resistance and the CSP Vaccine Antigen inInternational journal of molecular sciences · 2025Article
- Frequencies of molecular markers of drug resistance in the context of two different Seasonal Malaria Chemoprevention (SMC) treatment regimens in the Koulikoro health district, Mali.Antimicrobial agents and chemotherapy · 2025Article
- Prevalence of resistance markers of artemisinin, partner drugs, and sulfadoxine-pyrimethamine in Nanyumbu and Masasi Districts, Tanzania between 2020 and 2021.Antimicrobial agents and chemotherapy · 2025Article
- Model-directed generation of artificial CRISPR-Cas13a guide RNA sequences improves nucleic acid detection.Nature biotechnology · 2025Article
- Mutational profile of pfdhfr, pfdhps, pfmdr1, pfcrt and pfk13 genes of P. falciparum associated with resistance to different antimalarial drugs in Osun state, southwestern Nigeria.Tropical medicine and health · 2025Article
- Evaluation of dried blood spot sampling for real-time PCR malaria diagnostics in a rural setting in Angola.Parasites & vectors · 2025Article
- Prevalence of molecular markers associated withThe Pan African medical journal · 2025Article
- Seasonal malaria chemoprevention and mutations inMalariaWorld journal · 2025Article
- Article
- Two decades of molecular surveillance in Senegal reveal rapid changes in known drug resistance mutations over time.Malaria journal · 2024Article
- Molecular Study ofJournal of fungi (Basel, Switzerland) · 2024Article
- ONT sequencing identifies a high prevalence ofFrontiers in genetics · 2024Article
- Article
- Assessment of genetic polymorphisms associated with malaria antifolate resistance among the population of Libreville, Gabon.Malaria journal · 2023Article
- Two decades of molecular surveillance in Senegal reveal changes in known drug resistance mutations associated with historical drug use and seasonal malaria chemoprevention.medRxiv : the preprint server for health sciences · 2023Article
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9 authors at 3 institutions in 2 countries.
Funding
Abstract
backgroundPlasmodium falciparum-resistance to sulphadoxine-pyrimethamine (SP) has been largely reported among pregnant women. However, the profile of resistance markers to SP dihydrofolate reductase (dhfr) and dihydropteroate synthase (dhps) in the general population are varied and not frequently monitored. Currently, SP is used as partner drug for artemisinin combination therapy (SP-artesunate) in some sub-Saharan African countries or as a prophylactic drug in intermittent preventive treatment of malaria during pregnancy and infants and in seasonal malaria chemoprevention (SMC). Profiling of P. falciparum-resistant genotypes to SP is dynamic and critical in providing data that would be useful for malaria control programmes. This study assessed the profile of dhfr and dhps genes genotypes among individuals with malaria in Lagos, Nigeria.
methodsMolecular markers of SP resistance were identified by nested PCR and sequenced among malaria positive dried blood spots (DBS) that were collected from individuals attending health facilities from January 2013 to February 2014 and during community surveys from October 2010 to September 2011 across different Local Government Areas of Lagos State, Nigeria.
resultsA total of 242 and 167 samples were sequenced for dhfr and dhps, respectively. Sequence analysis of dhfr showed that 95.5% (231/242), 96.3% (233/242) and 96.7% (234/242) of the samples had N51I, C59R and S108N mutant alleles, respectively. The prevalence of dhps mutation at codons A437G, A613S, S436A, A581G, I431V and K540E were 95.8% (160/167), 41.9% (70/167), 41.3% (69/167), 31.1% (52/167), 25.1% (42/167), and 1.2% (2/167) respectively. The prevalence of triple mutations (CIRNI) in dhfr was 93.8% and 44.3% for the single dhps haplotype mutation (SGKAA). Partial SP-resistance due to quadruple dhfr-dhps haplotype mutations (CIRNI-SGKAA) and octuple haplotype mutations (CIRNI-VAGKGS) with rate of 42.6% and 22.0%, respectively has been reported.
conclusionsThere was increased prevalence in dhfr triple haplotype mutations when compared with previous reports in the same environment but aligned with high prevalence in other locations in Nigeria and other countries in Africa. Also, high prevalence of dhfr and dhps mutant alleles occurred in the study areas in Lagos, Nigeria five to eight years after the introduction of artemisinin combination therapy underscores the need for continuous monitoring.
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