The effect of cyclosporin A on Trypanosoma musculi infection of mice

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Abstract
Cyclosporin A treatment of mice infected with Trypanosoma musculi mimicked the effect of T-cell deprivation in increasing the parasitemia and lowering the antibody responses. However, in contrast to T-cell deprivation, cyclosporin A treated mice were still able to clear the parasites from the blood. As expected, T-cell deprived mice were not responsive to cyclosporin A. It is suggested that antibodies against T-independent antigens of the parasite are ineffective in promoting elimination of the trypanosomes. These findings support the importance of T-helper cells in the final elimination of T. musculi from the blood of mice.