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Moderate-to-severe early-onset hyperuricaemia: a prognostic marker of long-term kidney transplant outcome

Cited 21 time in Web of Science Cited 25 time in Scopus
Authors
Min, Sang Il; Yun, Ik Jin; Kang, Jin Mo; Park, Yang Jin; Ahn, Curie; Ha, Jongwon; Kim, Sang Joon; Min, Seung Kee
Issue Date
2009-08
Publisher
OXFORD UNIV PRESS
Citation
NEPHROLOGY DIALYSIS TRANSPLANTATION; Vol.24 8; 2584-2590
Keywords
chronic allograft nephropathygraft functiongraft survivalrenal transplantationhyperuricaemia
Abstract
Background. Hyperuricaemia commonly occurs in renal transplant recipients (RTRs), but the effects of post-transplant hyperuricaemia on kidney transplant outcome have not been clearly established. This work was designed to explore the impact of hyperuricaemia on renal transplant outcome. Methods. The authors examined this issue by analysing the clinical outcome of 281 RTRs. Hyperuricaemia (defined as UA > 7.0 mg/dl in men and > 6.0 mg/dl in women for at least two consecutive tests, n = 121) was classified as early onset (within 1 year of transplant, n = 90) or late onset (n = 31). Graft function was estimated using the MDRD Study Equation 7 (eGFR(MDRD)). Results. As late-onset hyperuricaemia was found to be induced by a progressive decline in the graft function (P < 0.01), data from early-onset hyperuricaemic recipients were used. Early-onset moderate-to-severe hyperuricaemia (defined as UA = 8.0 mg/dl) was found to be a significant risk factor for chronic allograft nephropathy (P = 0.035) and a poorer graft survival (P = 0.026) by multivariate analysis, whereas mild hyperuricaemia was not. The impact of moderate-to-severe hyperuricaemia on renal transplant survival was dependent on the duration of exposure. Likewise, the detrimental effect of early-onset hyperuricaemia on the graft function was dependent on UA levels and exposure time. After control of the baseline graft function by analysis of only recipients with a good graft function at 1 year post-transplantation (eGFRMDRD > 60 ml/min), moderate-to-severe early-onset hyperuricaemia was also found to be a marker of long-term graft dysfunction and failure. Conclusion. Moderate-to-severe early-onset hyperuricaemia may be a prognostic marker of the long-term graft outcome in RTRs, which needs further investigation.
ISSN
0931-0509
Language
English
URI
http://hdl.handle.net/10371/77414
DOI
https://doi.org/10.1093/ndt/gfp192
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College of Medicine/School of Medicine (의과대학/대학원)Internal Medicine (내과학전공)Journal Papers (저널논문_내과학전공)
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