Autor: |
Michiel G H Betjes, Nicolle H R Litjens |
Jazyk: |
angličtina |
Rok vydání: |
2020 |
Předmět: |
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Zdroj: |
PLoS ONE, Vol 15, Iss 2, p e0228096 (2020) |
Druh dokumentu: |
article |
ISSN: |
1932-6203 |
DOI: |
10.1371/journal.pone.0228096 |
Popis: |
BACKGROUND:The hypothesis was tested that parameters of an aged T-cell compartment associate with the risk for late rejection after kidney transplantation. METHODS:Recipients of a kidney transplant in the period 2007-2013 were (N = 365) were included. T cells were characterized prior to transplantation by flow cytometry as naive (CD45RO-CCR7+), central-memory (CD45RO+CCR7+), effector-memory (CD45RO-CCR7-) or terminally differentiated CD8+ Temra (CD45RO-/CCR7-/CD28-) cells. T cell telomere length and thymic output were assessed prior to transplantation in 202 recipients. Follow-up was until December 2018. The date of the first time of biopsy-proven late rejection (>6 months after transplantation) was used to calculate the rejection-free survival time. RESULTS:Fifty cases of biopsy-proven rejection were recorded. Thymic output and T cell telomere length did not associate with late rejection-free survival. However, the percentage and absolute numbers of CD8+Temra and CD28null CD8+ T cells were significantly lower in patients with late rejection. Specifically, in the highest tertile of percentages of CD28null CD8+ T cells, the cumulative incidence of late rejection at 5 and 10 years was only 5% and 8% compared to 16% and 20% in the middle to lowest tertile (p = 0.002). Multivariate proportional hazard analysis showed that percentage and absolute number of CD28null CD8+ T cells remained significantly associated with late rejection and rejection-related graft loss. CONCLUSION:High numbers of differentiated CD28null CD8+ T cells decrease the risk for late rejection and rejection-related graft loss after kidney transplantation. |
Databáze: |
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