The whole plants of Carpesium genus are used in traditional medicine as anti-pyretic, analgesic and vermifugic, including a topical application for sores and inflammation. A previous study on Carpesium genus suggested that the antiplasmodial activity against Plasmodium falciparum was due to the existence of 11(13)-Dehydroivaxillin (DDV) from EtOAc extracts of C. ceruum (Compositae).
METHODS AND RESULTS:
Here, the antimalarial activity of 11(13)-Dehydroivaxillin was evaluated against Plasmodium berghei in mice. The LD(50) of the compound was determined as 51.2 mg/kg, while doses of 124 mg/kg and above were found to be lethal to mice. 11(13)-Dehydroivaxillin (2, 5, 10 mg/kg/day) exhibited a significant blood schizontocidal activity in 4-day early infection, repository evaluation and in an established infection with a significant mean survival time comparable to that of the standard drug, chloroquine, 5 mg/kg/day.
CONCLUSIONS:
11(13)-Dehydroivaxillin possesses a promising antiplasmodial activity, which can be exploited in malaria therapy. |