Complexity ofPlasmodium falciparumClinical Samples from Uganda during Short‐Term Culture
Author(s) -
Samuel L. Nsobya,
Moses Ν. Kiggundu,
Moses Joloba,
Grant Dorsey,
Philip J. Rosenthal
Publication year - 2008
Publication title -
the journal of infectious diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.69
H-Index - 252
eISSN - 1537-6613
pISSN - 0022-1899
DOI - 10.1086/592506
Subject(s) - plasmodium falciparum , biology , malaria , genotype , virology , apicomplexa , microbiology and biotechnology , genetics , immunology , gene
We cultured Plasmodium falciparum parasites from 98 Ugandan children with malaria and determined the complexity of infection (COI) on the basis of msp-2 polymorphisms daily for 9 days. The mean COI decreased during culture from 1.73 to 1.56. New strains appeared after day 0 in 20 cultures. Strains disappeared after day 0 in 56% of 45 cultures that were initially mixed; persisting strains more commonly had wild-type dhfr (C59) and dhps (K540) sequences and mutant pfmdr1 (86Y) sequences. Thus, initial genotypes offer an imperfect representation of clinical COI. Loss of strains in culture may be due to diminished fitness of some drug-resistant strains.
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