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  • Title: Hyperuricemia is associated with the development of the composite outcomes of new cardiovascular events and chronic allograft nephropathy.
    Author: Akalin E, Ganeshan SV, Winston J, Muntner P.
    Journal: Transplantation; 2008 Sep 15; 86(5):652-8. PubMed ID: 18791445.
    Abstract:
    BACKGROUND: To investigate the prevalence and the predictors for the development of hyperuricemia at 6 months after kidney transplantation, and its association with clinical outcomes including patient and graft survival, the development of new cardiovascular events and chronic allograft nephropathy (CAN). MATERIALS AND METHODS: Adult patients who underwent kidney transplantation at Mount Sinai Medical Center between January 1, 2001 and December 30, 2004 were included in the study. New cardiovascular events and biopsy-proven CAN were investigated. RESULTS: Of the 307 patients, 163 patients (53%) had normal uric acid levels and 144 patients (47%) had hyperuricemia. After adjustment for age, race, and sex, receiving a cadaveric kidney, having an estimated glomerular filtration rate (eGFR) less than 50 mL/min, and taking diuretics or cyclosporine were associated with hyperuricemia at 6 months after transplantation. Over a mean 4.3 years of follow-up, 83 patients had one, or more, of the events, 4 died, 20 had graft failure, 40 had new cardiovascular events, and 41 developed CAN. Kaplan-Meier survival curves showed that these events occurred more frequently in patients with hyperuricemia (P<0.001). Among transplant recipients with an eGFR less than 50 mL/min, 45% of hyperuricemic and 21% of normouricemic patients had an event (P=0.038). For patients with an eGFR more than 50 mL/min, event rates were similar for patients with and without hyperuricemia, 25.0% vs. 19.4%, respectively. CONCLUSIONS: These results suggest an important association between hyperuricemia at 6 months after kidney transplantation and new cardiovascular events and CAN in patients with decreased allograft function.
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