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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Yamada, K. Lee, R. S. Rose, H. S. Madsen, J. C. Sayegh, M. H. Maloney, M. E. Womer, K. L. Houser, S. L. |
| Description | Author Affiliation: Lee RS ( The Transplantation Biology Research Center and Division of Cardiac Surgery, Department of Surgery, Massachusetts General Hospital, Boston, MA 02114, USA.); |
| Abstract | Graft loss from chronic rejection has become the major obstacle to the long-term success of whole organ transplantation. In cardiac allografts, chronic rejection is manifested as a diffuse and accelerated form of arteriosclerosis, termed cardiac allograft vasculopathy. It has been suggested that T-cell recognition of processed alloantigens (allopeptides) presented by recipient antigen-presenting cells through the indirect pathway of allorecognition plays a critical role in the development and progression of chronic rejection. However, definitive preclinical evidence to support this hypothesis is lacking. To examine the role of indirect allorecognition in a clinically relevant large animal model of cardiac allograft vasculopathy, we immunized MHC inbred miniature swine with synthetic polymorphic peptides spanning the alpha(1) domain of an allogeneic donor-derived swine leukocyte antigen class I gene. Pigs immunized with swine leukocyte antigen class I allopeptides showed in vitro proliferative responses and in vivo delayed-type hypersensitivity responses to the allogeneic peptides. Donor MHC class I disparate hearts transplanted into peptide-immunized cyclosporine-treated pigs not only rejected faster than unimmunized cyclosporine-treated controls (mean survival time = 5.5 +/-1.7 vs. 54.7 +/-3.8 days, P < 0.001), but they also developed obstructive fibroproliferative coronary artery lesions much earlier than unimmunized controls (<9 vs. >30 days). These results definitively link indirect allorecognition and cardiac allograft vasculopathy. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 6 |
| Volume Number | 98 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2001-03-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Coronary Artery Disease Immunology Heart Transplantation Isoantigens Peptides Animals Graft Rejection Histocompatibility Antigens Class I Hypersensitivity, Delayed Immunization Interferon-gamma Biosynthesis Interleukin-10 Isoantibodies Swine, Miniature Transplantation, Homologous Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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