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Residual antimalarial concentrations before treatment in patients with malaria from Cambodia: indication of drug pressure

Hodel, E. M. and Genton, B. and Zanolari, B. and Mercier, T. and Duong, S. and Beck, H. P. and Olliaro, P. and Decosterd, L. A. and Ariey, F.. (2010) Residual antimalarial concentrations before treatment in patients with malaria from Cambodia: indication of drug pressure. Journal of Infectious Diseases, Vol. 202, no. 7. S. 1088-1094.

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Official URL: http://edoc.unibas.ch/dok/A5843011

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Abstract

Background. The Thai-Cambodian border has been known as the origin of antimalarial drug resistance for the past 30 years. There is a highly diverse market for antimalarials in this area, and improved knowledge of drug pressure would be useful to target interventions aimed at reducing inappropriate drug use. Methods. Baseline samples from 125 patients with falciparum malaria recruited for 2 in vivo studies (in Preah Vihear and Pursat provinces) were analyzed for the presence of 14 antimalarials in a single run, by means of a liquid chromatography-tandem mass spectrometry assay. Results. Half of the patients had residual drug concentrations above the lower limit of calibration for at least 1 antimalarial at admission. Among the drugs detected were the currently used first-line drugs mefloquine (25% and 35% of patients) and piperaquine (15% of patients); the first-line drug against vivax malaria, chloroquine (25% and 41% of patients); and the former first-line drug, quinine (5% and 34% patients). Conclusions. The findings demonstrate that there is high drug pressure and that many people still seek treatment in the private and informal sector, where appropriate treatment is not guaranteed. Promotion of comprehensive behavioral change, communication, community-based mobilization, and advocacy are vital to contain the emergence and spread of parasite resistance against new antimalarials
Faculties and Departments:09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Medical Parasitology and Infection Biology > Molecular Parasitology and Epidemiology (Beck)
UniBasel Contributors:Beck, Hans-Peter and Hodel, Eva Maria and Genton, Blaise
Item Type:Article, refereed
Bibsysno:Link to catalogue
Publisher:Oxford University Press
ISSN:0022-1899
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:08 Jun 2012 06:55
Deposited On:08 Jun 2012 06:47

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