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cytochrome b

Not Open Access | Selection of cytochrome b mutants is rare among Plasmodium falciparum patients failing treatment with atovaquone-proguanil in Cambodia

December 29, 2020 - 14:56 -- NOT Open Access
Author(s): 
Lin JT, Waltmann A, Wojnarski M, et al.
Reference: 
Antimicrob Agents Chemother. 2020 Dec 23:AAC.01249-20

Atovaquone-proguanil remains effective against multidrug-resistant Plasmodium falciparum in Southeast Asia, but resistance is mediated by a single point mutation in cytochrome b (cytb) that can arise during treatment. Among 14 atovaquone-proguanil treatment failures in a clinical trial in Cambodia, only one recrudescence harbored the cytb mutation Y268C.

Targeted deep amplicon sequencing of kelch 13 and cytochrome b in Plasmodium falciparum isolates from an endemic African country using the Malaria Resistance Surveillance (MaRS) protocol

March 19, 2020 - 08:39 -- Open Access
Author(s): 
L'Episcopia M, Kelley J, Patel D, Schmedes S, Ravishankar S, Menegon M, Perrotti E, Nurahmed AM, Talha AA, Nour BY, Lucchi N, Severini C, Talundzic E
Reference: 
Parasit Vectors. 2020 Mar 14; 13(1):137

Routine molecular surveillance for imported drug-resistant malaria parasites to the USA and European Union is an important public health activity. The obtained molecular data are used to help keep chemoprophylaxis and treatment guidelines up to date for persons traveling to malaria endemic countries. Recent advances in next-generation sequencing (NGS) technologies provide a new and effective way of tracking malaria drug-resistant parasites.

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