Abstract
We conducted a prevalence study of mutations in Plasmodium falciparum that are associated with antifolate resistance in Blantyre, Malawi. The dihydrofolate reductase 164-Leu mutation, which confers resistance to both pyrimethamine and chlorproguanil, was found in 4.7% of the samples. Previously unreported mutations in dihydropteroate synthase were also found.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Animals
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Antimalarials / pharmacology*
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DNA Primers
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Drug Combinations
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Drug Resistance
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Folic Acid Antagonists / pharmacology
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Humans
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Malaria, Falciparum / parasitology
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Malawi
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Mutation
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Plasmodium falciparum / drug effects*
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Plasmodium falciparum / genetics*
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Proguanil / analogs & derivatives*
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Proguanil / pharmacology
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Pyrimethamine / pharmacology*
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Reverse Transcriptase Polymerase Chain Reaction
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Sulfadoxine / pharmacology*
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Tetrahydrofolate Dehydrogenase / genetics
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Tetrahydrofolate Dehydrogenase / metabolism
Substances
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Antimalarials
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DNA Primers
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Drug Combinations
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Folic Acid Antagonists
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Sulfadoxine
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chlorproguanil
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Tetrahydrofolate Dehydrogenase
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Proguanil
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Pyrimethamine