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Clinical and Developmental Immunology
Volume 2013, Article ID 828201, 5 pages
http://dx.doi.org/10.1155/2013/828201
Research Article

Anti-HLA and Anti-MICA Antibodies in Liver Transplant Recipients: Effect on Long-Term Graft Survival

1Department of Immunology, Transplantology and Internal Diseases, Medical University of Warsaw, Nowogrodzka Street 59, 02-006 Warsaw, Poland
2Department of Anatomic Pathology, Medical University of Warsaw, Chałubińskiego 5, 02-004 Warsaw, Poland
3Department of General, Transplant and Liver Surgery, Medical University of Warsaw, Banacha 1A, 02-097 Warsaw, Poland

Received 2 August 2013; Accepted 21 October 2013

Academic Editor: Basak Kayhan

Copyright © 2013 Michał Ciszek et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objective. Presence of anti-HLA antibodies has a well-known impact on kidney grafts survival; however their role in liver transplantation has not been fully elucidated. We conducted a 7-year prospective study to show correlation between presence of anti-HLA and anti-MICA antibodies and liver graft survival. Methods. Blood samples from 123 liver transplant recipients were collected during patients routine visits. Time from transplantation to blood sample collection was different for each patient. Blood samples were tested for anti-HLA (separately class I and II) and MICA antibodies using Luminex assays. Results. There were 32 (26%) patients with positive anti-HLA and 37 (30%) with positive anti-MICA antibodies. Graft loss occurred in 7 cases (23%) in anti-HLA positive group compared to 20 (22%) in anti-HLA negative group ( ) and in 8 cases (22%) in anti-MICA positive group but 19 (23%) in anti-MICA negative group ( ). No correlations were detected between presence of antibodies and acute graft rejection (AGR). Presence of any antibodies (anti-HLA or anti-MICA antibodies) correlated with late graft rejection ( ). Conclusion. Presence of anti-HLA or anti-MICA had no impact on long-term liver graft survival; however, detection of any antibodies was correlated with episodes of late graft rejection.