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Preventing antimalarial drug resistance through combinations.

¹Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.

Drug Resistance Updates : Reviews and Commentaries in Antimicrobial and Anticancer Chemotherapy

|November 10, 2006

Summary

Antimalarial drug resistance is rising globally, especially in Plasmodium falciparum. Combining artemisinin derivatives with new antimalarial drugs is recommended to prevent resistance.

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Area of Science:

Tropical medicine
Infectious diseases
Pharmacology

Background:

Increasing antimalarial drug resistance, particularly in Plasmodium falciparum, is a significant global health concern.
Prevalence of resistance to chloroquine, pyrimethamine-sulfadoxine, and mefloquine is noted in Southeast Asia.
Vulnerability to resistance is linked to drug properties like long half-life and shallow concentration-effect relationships.

Purpose of the Study:

To highlight the growing threat of antimalarial drug resistance.
To discuss characteristics that contribute to drug resistance development.
To advocate for strategic drug combinations to combat resistance.

Main Methods:

Review of existing literature on antimalarial drug resistance mechanisms.
Analysis of factors contributing to the development of resistance.
Evaluation of the efficacy of artemisinin derivatives and combination therapies.

Main Results:

Plasmodium falciparum exhibits increasing resistance to multiple antimalarial drugs globally.
Specific drug characteristics predispose them to resistance development.
Artemisinin derivatives demonstrate high potency, reducing parasite biomass significantly per cycle.

Conclusions:

Drug combinations, particularly with artemisinin derivatives, are crucial for delaying or preventing antimalarial drug resistance.
Combining artemisinin derivatives with newly introduced antimalarial drugs is a recommended strategy for future treatment regimens.
Proactive combination therapy is essential to preserve the efficacy of antimalarial treatments.