Hyperuricemia in kidney transplant recipients with intact graft function

Area of Science:

• Nephrology
• Transplant Medicine
• Endocrinology

Background:

• Hyperuricemia is a common complication after kidney transplantation.
• Understanding its predictors and impact on graft function is crucial for patient management.

Purpose of the Study:

• To determine the prevalence of hyperuricemia in kidney transplant recipients with preserved graft function (eGFR >60 mL/min/1.73 m²).
• To identify factors associated with hyperuricemia.
• To analyze the relationship between uric acid and estimated glomerular filtration rate (eGFR) over time post-transplantation.

Main Methods:

• Retrospective analysis of adult kidney transplant recipients (1990-2008) with eGFR >60 mL/min/1.73 m².
• Data collected from electronic health records, including clinical and laboratory parameters.
• Multivariate analysis to identify predictors of hyperuricemia.

Main Results:

• Hyperuricemia was present in 15.45% of 356 patients.
• Transplant duration, male gender, eGFR, diabetes mellitus, and calcium levels were associated with higher uric acid levels.
• Uric acid levels increased and eGFR decreased significantly in the first year post-transplant, with stable levels thereafter. Uric acid and eGFR changes were synchronous.

Conclusions:

• Transplant duration, male gender, eGFR, diabetes mellitus, and serum calcium are risk factors for hyperuricemia in kidney transplant recipients with good graft function.
• Elevated uric acid levels post-transplantation did not significantly impair graft function in this cohort.