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Cultivation in a semi defined medium of animal infective forms of trypanosoma brucei trypanosoma equiperdum trypanosoma evansi trypanosoma rhodesiense and trypanosoma gambiense



Cultivation in a semi defined medium of animal infective forms of trypanosoma brucei trypanosoma equiperdum trypanosoma evansi trypanosoma rhodesiense and trypanosoma gambiense



EMBO (European Molecular Biology Organization) Journal 4(5): 1273-1278



A semi-defined medium for the cultivation of bloodstream forms of the African trypanosome brucei subgroup was developed. Out of 14 different strains tested, 10 could be cultured including T. brucei, T. equiperdum, T. evansi, T. rhodesiense and T. gambiense. The presence of a reducing agent (2-mercaptoethanol or thioglycerol) was found to be essential for growth. The standard medium consisted of Hepes buffered minimum essential medium with Earle's salts supplemented with 0.2 mM 2-mercaptoethanol, 2 mM pyruvate and 10% inactivated serum either from rabbit (T. brucei, T. equiperdum, T. evansi and T. rhodesiense) or human (T. gambiense). Although a general medium could be defined for the long-term maintenance of trypanosome cultures, the initiation to culture nevertheless required particular conditions for the different strains. The cultured trypanosomes had all the characteristics of the in vivo bloodstream forms including: morphology, infectivity, antigenic variation and glucose metabolism.

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