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Published in: Malaria Journal 1/2006

Open Access 01-12-2006 | Research

Assessment of Plasmodium falciparum resistance to ferroquine (SSR97193) in field isolates and in W2 strain under pressure

Authors: Wassim Daher, Christophe Biot, Thierry Fandeur, Helene Jouin, Lydie Pelinski, Eric Viscogliosi, Laurent Fraisse, Bruno Pradines, Jacques Brocard, Jamal Khalife, Daniel Dive

Published in: Malaria Journal | Issue 1/2006

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Abstract

Background

Ferroquine (FQ), or SSR97193, is a novel antimalarial drug currently in phase I clinical trials. FQ is a unique organometallic compound designed to overcome the chloroquine (CQ) resistance problem. FQ revealed to be equally active on CQ-sensitive and CQ-resistant Plasmodium falciparum laboratory strains and field isolates. FQ is also curative on rodent malaria parasites. As FQ will be tested in patients, the potential for resistance to this drug was evaluated.

Methods

The relationship between CQ-resistant transporter gene genotype and susceptibility to FQ were studied in 33 Cambodian P. falciparum field isolates previously studied for their in vitro response to CQ. In parallel, the ability of the CQ-resistant strain W2, to become resistant to FQ under drug pressure was assessed.

Results

The IC50 values for FQ in field isolates were found to be unrelated to mutations occurring in the P. falciparum chloroquine resistance transporter (PfCRT) or to the level of expression of the corresponding mRNA. In vitro, under a drug pressure of 100 nM of FQ, transient survival was observed in only one of two experiments.

Conclusion

Field isolates studies and experimental drug pressure experiments showed that FQ overcomes CQ resistance, which reinforces the potential of this compound as a new antimalarial drug.
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Metadata
Title
Assessment of Plasmodium falciparum resistance to ferroquine (SSR97193) in field isolates and in W2 strain under pressure
Authors
Wassim Daher
Christophe Biot
Thierry Fandeur
Helene Jouin
Lydie Pelinski
Eric Viscogliosi
Laurent Fraisse
Bruno Pradines
Jacques Brocard
Jamal Khalife
Daniel Dive
Publication date
01-12-2006
Publisher
BioMed Central
Published in
Malaria Journal / Issue 1/2006
Electronic ISSN: 1475-2875
DOI
https://doi.org/10.1186/1475-2875-5-11

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