Point Mutations in the Dihydrofolate Reductase and Dihydropteroate Synthetase Genes and in Vitro Susceptibility to Pyrimethamine and Cycloguanil of Plasmodium falciparum Isolates from Papua New Guinea

Abstract excerpt

Plasmodium falciparum isolates from 24 Papua New Guinean patients with symptomatic malaria were tested for susceptibility to pyrimethamine and cycloguanil. Thirteen isolates were sensitive to both agents and the remainder exhibited varying degrees of resistance. No isolates were found to be resistant to one agent yet sensitive to the other and a positive correlation suggesting cross-resistance was found. Parasite...

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