期刊
PARASITE
卷 7, 期 1, 页码 3-7出版社
EDP SCIENCES S A
DOI: 10.1051/parasite/2000071003
关键词
Toxoplasma gondii; medicinal plant; ethnopharmacology; Ivory Coast; in vitro
类别
Both Toxoplasma gondii and Plasmodium are Apicomplexan protozoa that share common metabolic pathways and potential drug targets. The objective of this study was to examine the anti-Toxoplasma activity of nine West African plants with known activity against P. falciparum. The extracts were obtained from parts of plant commonly used, by most traditional healers, in the form of infusion or as water decoction. The in vitro activity of plant extracts on T. gondii was assessed on MRCS tissue cultures and was quantified by enzyme-linked immunoassay, Aqueous extracts from Vernonia colorata were found to be inhibitory for Toxoplasma growth at concentrations > 10 mg/L, with on IC50 of 16.3 mg/L. A ten-fold gain in activity was obtained when organic solvents such as dichloromethane, acetone or ethanol were used to extract V. colorota's active principles. These extracts were inhibitory at concentrations as low as 1 mg/L, with ICS, of 1.7, 2.6 and 2.9 mg/L for dichloromethane, acetone and ethanol extracts respectively. These results indicate a promising source of new anti-Toxoplasma drugs from V. colorata and African medicinal plants.
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