Document Detail


The extent of HLA-DR expression on HLA-DR(+) Tregs allows the identification of patients with clinically relevant borderline rejection.
MedLine Citation:
PMID:  23279010     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Regulatory T cells (Tregs) were shown to be involved into the pathogenesis of acute rejection after transplantation. The suppressive activity of the total regulatory T cell pool depends on its percentage of highly suppressive HLA-DR(+) -Treg cells. Therefore, both the suppressive activity of the total Treg pool and the extent of HLA-DR expression of HLA-DR(+) -Tregs (MFI HLA-DR) were estimated in non transplanted volunteers, patients with end-stage renal failure (ESRF), healthy renal transplant patients with suspicion on rejection, due to sole histological Bord-R or sole acute renal failure (ARF), and patients with clinically relevant borderline rejection (Bord-R and ARF). Compared to patients with only Bord-R or only ARF, the suppressive activity of the total Treg cell pool was exclusively reduced in patients with clinically relevant Bord-R. In parallel, the HLA-DR MFI of the DR(+) -Treg subset was significantly decreased in these patients, due to a significantly lower proportion of DR(high+) -Tregs, which were shown to have the highest suppressive capacity within the total Treg pool. Our findings clearly demonstrate that the determination of the HLA-DR MFI of the HLA-DR(+) -Treg subset allows a highly sensitive, specific and non-invasive discrimination between patients with clinically relevant Bord-R (Bord and ARF) and patients with subclinical rejection or other causes of transplant failure.
Authors:
Matthias Schaier; Nicole Seissler; Luis Eduardo Becker; Sebastian Markus Schaefer; Edgar Schmitt; Stefan Meuer; Friederike Hug; Claudia Sommerer; Rüdiger Waldherr; Martin Zeier; Andrea Steinborn
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-2
Journal Detail:
Title:  Transplant international : official journal of the European Society for Organ Transplantation     Volume:  -     ISSN:  1432-2277     ISO Abbreviation:  Transpl. Int.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8908516     Medline TA:  Transpl Int     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2013 The Authors Transplant International © 2013 European Society for Organ Transplantation. Published by Blackwell Publishing Ltd.
Affiliation:
Department of Nephrology, University of Heidelberg, Germany.
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