During the course of study searching for the antiparasitic agents from
natural compounds, we found that curcumin showed cytotoxicity against
African trypanosomes in vitro. The LD50 values of curcumin were 4.77/-0.91 mu M for bloodstream forms and 46.52+/-4.94 mu M for procyclic
forms of Trypanosoma brucei brucei (GUTat 3.1 clone).