[Frequency of T-cell mediated rejection in new-onset diabetes after kidney transplantation].

INTRODUCTION: New-onset diabetes is one of the most common complications after kidney transplantation.

AIM: The aims of the authors were to examine the frequency of new-onset diabetes mellitus in kidney transplanted patients receiving cyclosporine A (n = 95) and tacrolimus (n = 102) and to analyze the occurrence of T-cell mediated rejection in these two groups of patients.

METHOD: Age, laboratory results, renal function and histological findings were evaluated one year after kidney transplantation. Histological evaluation was performed according to the 2007 modification of the Banff 1997 classification.

RESULTS: New-onset diabetes developed in 12% of patients receiving cyclosporine A-based immunosuppression and in 24% of patients taking tacrolimus (p = 0.002). Uric acid level (p = 0.002) and the age of the recipient (p = 0.003) were significantly different in the new-onset diabetic and non-diabetic groups, while renal function showed no significant difference. Evaluation of tissue samples revealed a significant difference in T-cell mediated rejection between the new-onset diabetic and non-diabetic groups (13 vs. 8 patients; 37% vs. 6%; p = 0.001).

CONCLUSIONS: The results indicate an early development of the pathological effect of new-onset diabetes after kidney transplantation on the morphology of the renal allograft.