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In vitro Antiplasmodial and Haemolytic Activities of Trema orientalis, Cnestis ferruginea and Dialium dinklagei Used to Treat Malaria in Côte d’Ivoire

Karim Tuo, Sylvain Beourou, Kigbafori Dieudonné Silue, Allico Joseph Djaman, Adama Coulibaly, André Offianan Touré

Asian Journal of Research in Biochemistry · pp. 11–21 · Published 29 Sep 2022

10.9734/ajrb/2022/v11i1202

Abstract

Malaria constitutes one of the biggest health problems in tropical Africa due to the resistance of human malaria parasites to anti-malarial compounds. Research focused on plants used in traditional medicine to treat malaria is still a viable alternative for the creation of novel anti-malarial drugs. This study evaluated extracts from three medicinal plants, Trema orientalis, Cnestis ferruginea and Dialium dinklagei, used in traditional medicine in Côte d’Ivoire, for in vitro antiplasmodial activities. SYBR GREEN fluorescence method was used to evaluate the in vitro inhibitory activity of the extracts, chloroquine, artesunate and quinine against Plasmodium falciparum field isolates and two laboratory strains of Plasmodium falciparum: the chloroquine sensitive 3D7 and the chloroquine resistant Dd2. In comparison to plant extracts, chloroquine, quinine, and artesunate were chosen as reference antimalarials. In addition, the haemolytic activity of extracts showing good antiplasmodial activity was evaluated. The IC50 and the corresponding correlation coefficients were determined graphically, using In vitro Analysis and Reporting Tool (IVART) software of WWARN (Worldwide Antimalarial Resistance Network). Results showed that no plant was active with the hexanolic extract. Trema orientalis had moderate activity with the methanolic extract with activities ranging from 14.46µg/mL to 28.32µg/mL. Cnestis ferruginea was active with the decoction extracts with activities ranging from 11.78µg/mL to 13.94µg/mL. Dialium dinklagei was active with both methanolic and aqueous extracts ranging from 12.80µg/mL to 21.67µg/mL. There was less than 1% hemolysis at the concentration of 200 µg/mL of plant extracts. These results validate the reported traditional use of Trema orientalis, Cnestis ferruginea and Dialium dinklagei for malaria treatment in Côte d’Ivoire.

Antiplasmodial haemolytic In vitro malaria Plasmodium falciparum

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