World Antimalarial Resistance Network (WARN) II: In vitro antimalarial drug susceptibility

<p>Abstract</p> <p>Intrinsic resistance of <it>Plasmodium falciparum </it>is clearly a major determinant of the clinical failure of antimalarial drugs. However, complex interactions between the host, the parasite and the drug obscure the ability to define parasite drug...

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Main Authors: Ringwald Pascal, Fukuda Mark M, Wongsrichanalai Chansuda, Le Bras Jacques, Fandeur Thierry, Bacon David J, Jambou Ronan, Sibley Carol, Kyle Dennis E
Format: Article
Language:English
Published: BMC 2007-09-01
Series:Malaria Journal
Online Access:http://www.biomedcentral.com/1475-2875/6/120
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author Ringwald Pascal
Fukuda Mark M
Wongsrichanalai Chansuda
Le Bras Jacques
Fandeur Thierry
Bacon David J
Jambou Ronan
Sibley Carol
Kyle Dennis E
author_facet Ringwald Pascal
Fukuda Mark M
Wongsrichanalai Chansuda
Le Bras Jacques
Fandeur Thierry
Bacon David J
Jambou Ronan
Sibley Carol
Kyle Dennis E
author_sort Ringwald Pascal
collection DOAJ
description <p>Abstract</p> <p>Intrinsic resistance of <it>Plasmodium falciparum </it>is clearly a major determinant of the clinical failure of antimalarial drugs. However, complex interactions between the host, the parasite and the drug obscure the ability to define parasite drug resistance in vivo. The in vitro antimalarial drug susceptibility assay determines ex-vivo growth of parasite in the presence of serial drug concentrations and, thus, eliminates host effects, such as drug metabolism and immunity. Although the sensitivity of the parasite to various antimalarials provided by such a test provides an important indicator of intrinsic parasite susceptibility, there are fundamental methodological issues that undermine comparison of in vitro susceptibility both between laboratories and within a single laboratory over time. A network of laboratories is proposed that will agree on the basic parameters of the in vitro test and associated measures of quality control. The aim of the network would be to establish baseline values of sensitivity to commonly used antimalarial agents from key regions of the world, and create a global database, linked to clinical, molecular and pharmacology databases, to support active surveillance to monitor temporal trends in parasite susceptibility. Such a network would facilitate the rapid detection of strains with novel antimalarial resistance profiles and investigate suitable alternative treatments with retained efficacy.</p>
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spelling doaj.art-d46b442929ea46688580673dd10c63262022-12-22T02:12:17ZengBMCMalaria Journal1475-28752007-09-016112010.1186/1475-2875-6-120World Antimalarial Resistance Network (WARN) II: In vitro antimalarial drug susceptibilityRingwald PascalFukuda Mark MWongsrichanalai ChansudaLe Bras JacquesFandeur ThierryBacon David JJambou RonanSibley CarolKyle Dennis E<p>Abstract</p> <p>Intrinsic resistance of <it>Plasmodium falciparum </it>is clearly a major determinant of the clinical failure of antimalarial drugs. However, complex interactions between the host, the parasite and the drug obscure the ability to define parasite drug resistance in vivo. The in vitro antimalarial drug susceptibility assay determines ex-vivo growth of parasite in the presence of serial drug concentrations and, thus, eliminates host effects, such as drug metabolism and immunity. Although the sensitivity of the parasite to various antimalarials provided by such a test provides an important indicator of intrinsic parasite susceptibility, there are fundamental methodological issues that undermine comparison of in vitro susceptibility both between laboratories and within a single laboratory over time. A network of laboratories is proposed that will agree on the basic parameters of the in vitro test and associated measures of quality control. The aim of the network would be to establish baseline values of sensitivity to commonly used antimalarial agents from key regions of the world, and create a global database, linked to clinical, molecular and pharmacology databases, to support active surveillance to monitor temporal trends in parasite susceptibility. Such a network would facilitate the rapid detection of strains with novel antimalarial resistance profiles and investigate suitable alternative treatments with retained efficacy.</p>http://www.biomedcentral.com/1475-2875/6/120
spellingShingle Ringwald Pascal
Fukuda Mark M
Wongsrichanalai Chansuda
Le Bras Jacques
Fandeur Thierry
Bacon David J
Jambou Ronan
Sibley Carol
Kyle Dennis E
World Antimalarial Resistance Network (WARN) II: In vitro antimalarial drug susceptibility
Malaria Journal
title World Antimalarial Resistance Network (WARN) II: In vitro antimalarial drug susceptibility
title_full World Antimalarial Resistance Network (WARN) II: In vitro antimalarial drug susceptibility
title_fullStr World Antimalarial Resistance Network (WARN) II: In vitro antimalarial drug susceptibility
title_full_unstemmed World Antimalarial Resistance Network (WARN) II: In vitro antimalarial drug susceptibility
title_short World Antimalarial Resistance Network (WARN) II: In vitro antimalarial drug susceptibility
title_sort world antimalarial resistance network warn ii in vitro antimalarial drug susceptibility
url http://www.biomedcentral.com/1475-2875/6/120
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