Abstract
To compare the long-term outcome and complications of living-kidney grafts with arteriosclerosis to those without abnormal findings diagnosed using pretransplant graft biopsy, and to assess the impact of the arteriosclerosis in living-donor kidneys. The influence of arteriosclerosis in pretransplant biopsy on long-term outcomes and complications was evaluated in both unmatched (n=1351, without arteriosclerosis n=788 vs with arteriosclerosis n=563) and propensity score-matched cohorts (n=984, without arteriosclerosis n=492 vs with arteriosclerosis n=492) of adults who underwent living-kidney transplant. In both the unmatched and matched cohort, there was no significant difference in patient and death-censored graft survival at 10years between the without arteriosclerosis and with arteriosclerosis groups. The with arteriosclerosis group had a higher incidence rate of overall rejection than did the without arteriosclerosis group in both the unmatched (P=0.026) and matched (P=0.060) cohorts. The with arteriosclerosis group had significantly higher chronic antibody-mediated rejection than did the without arteriosclerosis group (P=0.006) in the unmatched cohort. The with arteriosclerosis group had a significantly lower estimated glomerular filtration rate in recipients, but there was no significant difference after matching. The incidence rates of calcineurin inhibitor nephrotoxicity and post-transplant anemia were significantly higher in the with arteriosclerosis group than in the without arteriosclerosis group in both the unmatched and matched cohorts. Long-term postoperative kidney function of living donors was lower in the with arteriosclerosis group. Kidney graft with arteriosclerosis might affect the incidence of rejection, complications and postoperative kidney function of donors. Long-term careful observation is required for both the recipients who received grafts with arteriosclerosis and the donors who had kidneys with arteriosclerosis.
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