title: Quinine levels in patients with uncomplicated falciparum malaria in the Amazon region of Brazil.
abstract: We examined the plasmatic concentrations of quinine in patients with uncomplicated falciparum malaria in an endemic area of the Amazon region in Brazil in a prospective clinical trial, in which a standard three-day course of oral quinine plus doxycycline was used. We measured the quinine in the plasma samples on days 0 and 3 by high performance liquid chromatography. The mean concentration of quinine was 6.04 +/-2.21 microg/mL in male patients and 5.98 +/-1.95 microg/mL in female patients. No significant differences in quinine concentration were observed between these two groups. All samples collected before starting treatment were negative for quinine. This information could help in the development of strategies for the rational use of antimalarial drugs in Brazil.
authors.affiliation: Department of Legal Medicine, Federal University of Pará, Belém, PA, Brazil. jvieira@ufpa.br
authors.forename: José Luiz Fernandes
authors.initials: JL
authors.lastname: Vieira
authors.forename: Larissa Maria Guimarães
authors.initials: LM
authors.lastname: Borges
authors.forename: Margareth Tavares Silva
authors.initials: MT
authors.lastname: Nascimento
authors.forename: Andreza de L S
authors.initials: Ade L
authors.lastname: Gomes
mesh_terms: D000328:Adult; D000818:Animals; D000962:Antimalarials / Q000097:blood* / Q000627:therapeutic use; D002851:Chromatography, High Pressure Liquid; D004318:Doxycycline / Q000627:therapeutic use; D016903:Drug Monitoring; D004359:Drug Therapy, Combination; D005260:Female; D006801:Humans; D016778:Malaria, Falciparum / Q000097:blood* / Q000188:drug therapy; D008297:Male; D011446:Prospective Studies; D011803:Quinine / Q000097:blood* / Q000627:therapeutic use
chemical_list: D000962:Antimalarials; D011803:Quinine; D004318:Doxycycline