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Kidney Int. 1988 Jun;33(6):1113-8.

Effects of cyclosporin A on the development of immune-mediated interstitial nephritis.

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Department of Medicine, University of Pennsylvania, Philadelphia.


We examined the effect of daily cyclosporin A administration on the development and extent of tubulointerstitial nephritis produced in rats immunized with tubular basement membranes in adjuvant. Six mg/kg/day of cyclosporin A, given from the time of immunization, completely blocked the development of interstitial lesions and renal insufficiency. The administration of cyclosporin A after the development of interstitial nephritis also arrested the progression of the histological lesions. Both T cell-mediated and humoral immunity were markedly reduced by the administration of cyclosporin A, as evidenced by the near absence of delayed-type hypersensitivity responses and by the reduced production of anti-tubular basement membrane antibodies. Cell admixture experiments indicated that impairment of the delayed-type hypersensitivity response to tubular antigen was probably not the result of active suppression, and suggested that the protective effect of cyclosporin A might be secondary to its direct inhibitory action on the activation of nephritogenic T and B cells. Finally, the treatment of control rats with cyclosporin A, in the doses used, did not produce any detectable kidney damage nor did it impair renal function. We conclude that cyclosporin A can be an effective prophylactic and therapeutic agent in autoimmune interstitial nephritis in rats.

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