Changing antimalarial drug resistance patterns identified by surveillance at three sites in Uganda

Patrick Tumwebaze, Stephen Tukwasibwe, Aimee Taylor, Melissa Conrad, Emmanuel Ruhamyankaka, Victor Asua, Andrew Walakira, Joaniter Nankabirwa, Adoke Yeka, Sarah Staedke, Bryan Greenhouse, Samuel L. Nsobya, Moses R. Kamya, Grant Dorsey, Philip J. Rosenthal

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

We assessed Plasmodium falciparum drug resistance markers in parasites collected in 2012, 2013, and 2015 at 3 sites in Uganda. The prevalence and frequency of parasites with mutations in putative transporters previously associated with resistance to aminoquinolines, but increased sensitivity to lumefantrine (pfcrt 76T; pfmdr1 86Y and 1246Y), decreased markedly at all sites. Antifolate resistance mutations were common, with apparent emergence of mutations (pfdhfr 164L; pfdhps 581G) associated with high-level resistance. K13 mutations linked to artemisinin resistance were uncommon and did not increase over time. Changing malaria treatment practices have been accompanied by profound changes in markers of resistance.
Original languageEnglish
Pages (from-to)631-635
Number of pages5
JournalJournal of Infectious Disease
Volume215
Issue number4
DOIs
Publication statusPublished - 15 Feb 2017
Externally publishedYes

Keywords

  • amodiaquine
  • artemether
  • artemisinin
  • artesunate
  • chloroquine
  • dihydroartemisinin
  • drug resistance
  • K13
  • lumefantrine
  • Malaria
  • pfcrt
  • pfmdr1
  • piperaquine
  • Plasmodium falciparum

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