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High regulatory T-cell levels at 1 year posttransplantation predict long-term graft survival among kidney transplant recipients

High regulatory T-cell levels at 1 year posttransplantation predict long-term graft survival among kidney transplant recipients

Transplantation Proceedings 44(9): 2538-2541

Regulatory T cells (Tregs) have gained an important role in mechanisms of tolerance and protection against the transplant rejection. However, only limited retrospective data have shown a relationship between peripheral blood Tregs and better long-term graft survival. The purpose of the present study was to investigate prospectively circulating Treg levels and their association with long-term graft survival. Ninety kidney transplant recipients underwent measurement of Treg levels in peripheral blood before as well as at 6 months and 1 year posttransplantation. Receiver operating characteristic curves were applied to test the sensitivity and specificity of Treg levels to predict prognosis. Treg levels before transplantation correlated with those at 6 months and 12 months posttransplantation (P < .001 and P = .002, respectively). Patients who maintained high Treg levels (above 70th percentile) at both 6 and 12 months displayed better long-term graft survival at 4 and 5 years follow-up (P = .04 and P = .043 respectively). There was no effect on patient survival. Detection of high levels of peripheral blood Tregs was associated with better graft survival possibly using as a potential marker of prognosis.

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Accession: 036665947

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PMID: 23146447

DOI: 10.1016/j.transproceed.2012.09.083

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