Potential of aspirin to inhibit thrombotic microangiopathy in α1,3-galactosyltransferase gene-knockout pig hearts after transplantation in baboons

Academic Article


  • Hearts from α1,3-Galactosyltransferase gene-knockout (GaIT-KO) pigs were transplanted heterotopically into 8 baboons that received an anti-CD154 monoclonal antibody (mAb)-based immunosuppressive regimen and heparin. Three baboons died or were euthanized with beating grafts on 16, 23, and 56 days, respectively, and the remaining 5 grafts functioned for 59-179 days. Hyperacute rejection did not occur, and classical features of acute humoral xenograft or acute cellular rejection were rare. However, thrombotic microangiopathy (TM) developed in all cases; its onset was delayed in 2 baboons that received aspirin. Function of a pig organ in a baboon for a period approaching 6 months has not been reported previously and lends encouragement that the barriers to xenotransplantation will be overcome, but TM requires investigation. © 2005 by Elsevier Inc. All rights reserved.
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    Author List

  • Dor FJMF; Kuwaki K; Tseng YL; Shimizu A; Houser SL; Yamada K; Hawley RJ; Patience C; Awwad M; Fishman JA
  • Start Page

  • 489
  • End Page

  • 490
  • Volume

  • 37
  • Issue

  • 1