The relationship between uric acid levels and graft function in renal transplant patients who discontinued steroid therapy
Abstract
Introduction: High uric acid levels are commonly encountered in kidney transplant recipients, and can be associated with allograft dysfunction. Our study aims to examine the relationship between UA levels and graft function in patients discontinuing steroids. Methods: In this single-center-retrospective study, 56 patients discontinued steroid therapy from among 678 RT patients transplanted from living donors between 1999-2020 were included. The mean age of the study group was 45.8±8.8 years. Causes of steroid discontinuation, creatinine levels concurrent with uric acid levels before and after steroid discontinuation (mean 3.9 ± 2.1 years), acute rejection numbers, demographics, durations of dialysis and transplantation, medications, laboratory data, human leukocyte antigen (HLA) mismatch numbers, blood-pressure (BP), body mass index, delayed acute rejection (DAR) numbers (3 months post-transplantation) were all recorded. Results: Creatinine and uric acid levels were seen to have increased after steroid discontinuation, there was a significant relationship between them (p<0.001). Statistically significant correlation was found between increased creatinine levels after steroid discontinuation and graft survival with higher HLA mismatch; 39 (69.6%) patients with mismatch ≥2, and 17 patients with mismatch <2 (30.4%) (p=0.049) . No significant relationship was found between DAR numbers before and after steroid discontinuation, and creatinine levels after steroid discontinuation. Conclusion: Per model obtained as a result of multivariate linear analysis, hyperuricemia and HLA mismatch numbers (p= 0.048 and p= 0.044, respectively) are independent predictive factors for graft dysfunction in patients discontinuing steroids. Accordingly, negative effects of modeling should be kept in mind for long-term graft survival in patients who plan to continue with steroid-sparing regimens.
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