2012 Fiscal Year Final Research Report
Association between donor specific HLA antibodies and rejection in liver transplantation
| Project/Area Number |
23791520
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Digestive surgery
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| Research Institution | The University of Tokyo |
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Principal Investigator |
WAKI Kayo 東京大学, 医学部附属病院, 特任助教 (70505891)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 移植 |
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| Research Abstract |
The role of human leukocyte antigen (HLA) antibodies in graft rejection after liver transplantation remains inconclusive. In order to investigate whether the presence of HLA antibodies was associated with rejection, we retrospectively examined the prevalence of anti-HLA antibodies in living-donor liver transplant recipients both before and after transplantation, and then analyzed the relationship of those antibodies with rejection.The prevalence of post-transplant HLA antibodies-especially donor-specific antibodies-in patients who experienced acute rejection was higher than in patients who had no rejection, though the difference did not reach statistical significance. In addition, the prevalence of antibodies before and after transplantation in patients who developed operational tolerance after withdrawal from immunosuppression was more likely to be negative than in patients who did not develop operational tolerance. Pre-transplant, the recipients who did not develop operational tolerance tended to have antibodies whose titers were already high. The highest mean fluorescence intensity of antibodies was significantly higher in patients who did not develop operational tolerance than in patients who developed operational tolerance. Therefore, not only the prevalence of antibodies but also their titers were closely associated with rejection.In our study, post-transplantation HLA antibodies were clearly associated with rejection.
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Research Products
(5 results)
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[Journal Article] Predicting operational tolerance in pediatric living-donor liver transplantation by absence of HLA antibodies2013
Author(s)
Waki K, Sugawara Y, Mizuta K, Taniguchi M, Ozawa M, Hirata M, Nozawa M, Kaneko J, Takahashi K, Kadowaki T, Terasaki PI, Kokudo N
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Journal Title
Transplantation
Volume: 95(1)
Pages: 177-83
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[Presentation] Association of preformed anti-HLA antibody with operational tolerance in pediatric living-donor liver transplantation: a possible evidence of humoral sensitization (oral presentation)2012
Author(s)
Kayo Waki, Yasuhiko Sugawara, Kouichi Mizuta, Masaru Hirata, Junichi Kaneko, Takashi Kadowaki, Taku Aoki, Kiyoshi Hasegawa, Norihiro Kokudo, Paul I. Terasaki
Organizer
American Trasnplant Congress 2012
Place of Presentation
Boston, USA
Year and Date
20120500
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