Surveillance of Artemisinin Resistance in Plasmodium falciparum in India Using the kelch13 Molecular Marker |
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| Authors: | Neelima Mishra Surendra Kumar Prajapati Kamlesh Kaitholia Ram Suresh Bharti Bina Srivastava Sobhan Phookan Anupkumar R. Anvikar Vas Dev Gagan Singh Sonal Akshay Chandra Dhariwal Nicholas J. White Neena Valecha |
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| Affiliation: | aNational Institute of Malaria Research, New Delhi, India;bNational Vector Borne Disease Control Programme, Delhi, India;cMahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand;dCentre for Tropical Medicine, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom |
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| Abstract: | Malaria treatment in Southeast Asia is threatened with the emergence of artemisinin-resistant Plasmodium falciparum. Genome association studies have strongly linked a locus on P. falciparum chromosome 13 to artemisinin resistance, and recently, mutations in the kelch13 propeller region (Pfk-13) were strongly linked to resistance. To date, this information has not been shown in Indian samples. Pfk-13 mutations were assessed in samples from efficacy studies of artemisinin combination treatments in India. Samples were PCR amplified and sequenced from codon 427 to 727. Out of 384 samples, nonsynonymous mutations in the propeller region were found in four patients from the northeastern states, but their presence did not correlate with ACT treatment failures. This is the first report of Pfk-13 point mutations from India. Further phenotyping and genotyping studies are required to assess the status of artemisinin resistance in this region. |
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