Effect of Aflatoxin B-1 on Course of Infection of Trypanosoma congolense in Mice

Mukabane, D. K, Shivairo, R. S, Mdachi, E. R, Orenge, C. O., Muleke, I.C


Mycotoxins as secondary metabolites are known to be common contaminants of both human food and animal feed. If ingested in minute but regular doses, they are known to cause suppression of the immune system and therefore, alter pathogenesis of many infectious diseases. Trypanosoma congolense an intravascular parasite is the most important cause of African animal trypanosomosis. The aim of this work was to investigate the effect of aflatoxin B-1, a common mycotoxin on progression and response of T. congolense to chemotherapy. Female Swiss white mice were intra-peritoneally injected with 0.05mg/kg body weight aflatoxin B-1 every after 3 days upto 10 times and on the 21st day were infected with T. congolense. Parasitological parameters including weight, packed cell volume and parasitaemia levels of aflatoxin B-1-injected-T. congolense-infected mice were compared with those of T. congolense-infected mice. ANOVA and mean separation were used to determine differences between the test and control mice. It was observed that there was significant difference (p?0.05) in body weight and mean death time but no significant difference in packed cell volume. It was concluded that aflatoxin B-1 has an effect on pathogenesis of T. congolense.

Key words: Trypanosoma congolense, Aflatoxin B-1, progression, chemotherapy

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