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  • Title: Renal transplantation in baboons under FK 506.
    Author: Todo S, Demetris A, Ueda Y, Imventarza O, Cadoff E, Zeevi A, Starzl TE.
    Journal: Surgery; 1989 Aug; 106(2):444-50; discussion 450-1. PubMed ID: 2474865.
    Abstract:
    FK 506 was tested in unrelated baboons submitted to renal transplantation and bilateral native nephrectomy. Untreated baboons died after 9.2 +/- 4.0 SD days. When FK 506 was given orally for 90 days, survival with the optimum dose was 74.6 +/- 28.9 days; this allowed maximum credit for each individual animal of 90 days. A 3-day course of intramuscular FK 506 started on postoperative day 4 allowed 1- to 2-month survival. Delayed rejection in these baboons as well as in those treated daily for 90 days with FK could sometimes be reversed temporarily with a second 3-day course. The doses required for a good therapeutic effect were 10 times greater in baboons than in dogs, a finding that may reflect a species difference of lymphocyte sensitivity to this drug. FK appeared to be relatively nontoxic in subhuman primates, and it remains a promising drug for clinical trial.
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