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The antimalarial effect of iron chelators: studies in animal models and in humans with mild falciparum malaria.

Authors
  • Hershko, C1
  • Gordeuk, V R
  • Thuma, P E
  • Theanacho, E N
  • Spira, D T
  • Hider, R C
  • Peto, T E
  • Brittenham, G M
  • 1 Department of Medicine, Shaare Zedek Medical Center, Jerusalem, Israel. , (Israel)
Type
Published Article
Journal
Journal of Inorganic Biochemistry
Publisher
Elsevier
Publication Date
Jan 01, 1992
Volume
47
Issue
3-4
Pages
267–277
Identifiers
PMID: 1431886
Source
Medline
License
Unknown

Abstract

In this study we explore the antimalarial effects of 3-hydroxypyridin-4-ones (CP compounds), a family of bidentate orally effective iron chelators in experimental animal systems in vivo and in vitro, and examine whether the iron chelator deferoxamine (DF) is active against human infection with P. falciparum. There was direct relation between lipid solubility of the CP compounds, which would facilitate membrane transit, and their in vivo antimalarial action, suggesting direct intracellular iron chelation as the most likely explantation for the antimalarial effect of iron chelators. Results of the double-blind, placebo controlled trial of DF in humans with asymptomatic parasitemia provided unequivocal evidence that this iron-chelating agent has antimalarial activity. Depriving the parasite of a metabolically important source of iron may represent a novel approach to antimalarial drug development. DF is a relatively ineffective intraerythrocytic chelator, and our data indicate that other orally effective iron chelators may have superior antimalarial activity in vivo. A systematic screening of available iron chelating drugs may result in the identification of potentially useful antimalarial compounds.

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