Anti-malarial drugs: how effective are they against Plasmodium falciparum gametocytes?

Abstract Background Recent renewed emphasis on the eradication of malaria has highlighted the need for more tools with which to achieve this ambitious goal. One high priority area is the need to determine the gametocytocidal activity of both currently used anti-malarial drugs and those in the develo...

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Bibliographic Details
Published in:Malaria Journal
Main Authors: Peatey Christopher L, Leroy Didier, Gardiner Donald L, Trenholme Katharine R
Format: Article in Journal/Newspaper
Language:English
Published: BMC 2012
Subjects:
Online Access:https://doi.org/10.1186/1475-2875-11-34
https://doaj.org/article/c9d2894ee98143dba70a2dbe59f7d3e2
Description
Summary:Abstract Background Recent renewed emphasis on the eradication of malaria has highlighted the need for more tools with which to achieve this ambitious goal. One high priority area is the need to determine the gametocytocidal activity of both currently used anti-malarial drugs and those in the development pipeline. However, testing the activity of compounds against Plasmodium falciparum gametocytes is technically challenging both in vivo and in vitro . Methods Here the use of a simple robust assay to screen a panel of currently used and experimental anti-malarial drugs against mature P. falciparum gametocytes is described. Results Eight of 44 compounds tested reduced gametocyte viability by at least 50% and three showed IC 50 values in nM range. Conclusions There is a need to identify new compounds with activity against late stage gametocytes and the information provided by this in vitro assay is a valuable first step, which can guide future clinical studies.