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Chapter: Modern Pharmacology with Clinical Applications: Antiprotozoal Drugs

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Antimalarial Drugs In Development

Chinese scientists have isolated several compounds with antimalarial activity from species of Artemisia.

DRUGS IN DEVELOPMENT

 

Chinese scientists have isolated several compounds with antimalarial activity from species of Artemisia. These include artemisinin (Qinghaosu), artesunate, and artemether. These sesquiterpene peroxides are potent and rapidly acting antimalarial drugs that show rela-tively low human toxicity. They are active against blood stages, especially in patients with severe manifestations, such as cerebral malaria and chloroquine-resistant malarial infections. They possess activity against the erythrocytic stages of human malaria and have no effect on the liver or exoerythrocytic stage of the parasite; their gameticidal activity is not clear. They are most use-ful in treating life-threatening cerebral edema. At pres-ent artemisinin, artesunate, and artemether are avail-able outside the United States.

 

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