Plasmodium falciparum malarial parasites from Brazil lack artemisinin resistance-associated mutations in the kelch13 gene

Resumo

Mutations in the propeller domain of the Plasmodium falciparum kelch13 (k13) gene are associated with artemisinin resistance. Methods: We developed a PCR protocol to sequence the pfk13 gene and determined its sequence in a batch of 50 samples collected from 2003 to 2016 in Brazil. Results: We identified 1 K189T substitution located outside the propeller domain of the PfK13 protein in 36% of samples. Conclusions: Although the sample size is relatively small, these results suggest that P. falciparum artemisinin-resistant mutants do not exist in Brazil, thereby supporting the continuation of current treatment programs based on artemisinin-based combination therapy

Descrição

Palavras-chave

Malaria, Plasmodium falciparum, Artemisinin resistance, Kelch 13

Citação

CHAPADENSE, Francesca et al. Plasmodium falciparum malaria parasites from Brazil lack artemisinin resistance-associated mutations in the kelch13 gene. Revista da Sociedade Brasileira de Medicina Tropical, Rio de Janeiro, v. 52, e20180225, 2019. DOI: 10.1590/0037-8682-0225-2018. Disponível em: https://www.scielo.br/j/rsbmt/a/6Kvq9JWDKL5sM334Qdh5jDR/?lang=en. Acesso em: 30 abr. 2025.