IN VITRO ACTIVITY OF ARTEMISONE COMPARED WITH ARTESUNATE AGAINST PLASMODIUM FALCIPARUM

MICHAEL RAMHARTER Medical Research Unit, Albert Schweitzer Hospital, Lambaréné, Gabon; Department of Internal Medicine I, Division of Infectious Diseases, Medical University of Vienna, Austria; Department of Parasitology, Institute for Tropical Medicine, University of Tübingen, Tübingen, Germany

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DOMINIK BURKHARDT Medical Research Unit, Albert Schweitzer Hospital, Lambaréné, Gabon; Department of Internal Medicine I, Division of Infectious Diseases, Medical University of Vienna, Austria; Department of Parasitology, Institute for Tropical Medicine, University of Tübingen, Tübingen, Germany

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JOHANNES NEMETH Medical Research Unit, Albert Schweitzer Hospital, Lambaréné, Gabon; Department of Internal Medicine I, Division of Infectious Diseases, Medical University of Vienna, Austria; Department of Parasitology, Institute for Tropical Medicine, University of Tübingen, Tübingen, Germany

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AYOLA A. ADEGNIKA Medical Research Unit, Albert Schweitzer Hospital, Lambaréné, Gabon; Department of Internal Medicine I, Division of Infectious Diseases, Medical University of Vienna, Austria; Department of Parasitology, Institute for Tropical Medicine, University of Tübingen, Tübingen, Germany

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PETER G. KREMSNER Medical Research Unit, Albert Schweitzer Hospital, Lambaréné, Gabon; Department of Internal Medicine I, Division of Infectious Diseases, Medical University of Vienna, Austria; Department of Parasitology, Institute for Tropical Medicine, University of Tübingen, Tübingen, Germany

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Artemisinins show the potential for neurotoxicity in preclinical studies. Artemisone is a leading candidate of second-generation semi-synthetic artemisinin derivatives for antimalarial therapy devoid of neurotoxicity. Artemisone showed 3–5-fold higher in vitro activity (50% effective concentration (EC50) = 0.14 nmol/L, EC90 = 2.55 nmol/L) than artesunate against fresh Plasmodium falciparum isolates from Gabon and a high-activity correlation indicates a shared drug target.

Author Notes

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