• J. Korean Med. Sci. · Jul 2020

    Association between Serum Uric Acid Level and ESRD or Death in a Korean Population.

    • Kipyo Kim, Suryeong Go, Hyung Eun Son, Ji Young Ryu, Hajeong Lee, Nam Ju Heo, Ho Jun Chin, and Jung Hwan Park.
    • Division of Nephrology and Hypertension, Department of Internal Medicine, Inha University College of Medicine, Incheon, Korea.
    • J. Korean Med. Sci. 2020 Jul 20; 35 (28): e254.

    BackgroundSerum uric acid (SUA) is recognized as a risk factor for chronic kidney disease (CKD) and mortality. However, there is controversy as to whether a high or low level of SUA is related to the risk of CKD progression or death, and whether it differs between males and females.MethodsWe included 143,762 adults who underwent voluntary health screening between 1995 and 2009 in Korea. For each sex, we divided participants into sex-specific quintiles according to SUA levels and compared end-stage renal disease (ESRD) incidence and mortality between the groups with low and high SUA levels and those with middle SUA levels. Sex-specific Cox proportional hazard analyses were performed for ESRD and all-cause mortality.ResultsAmong the 143,762 participants, 0.2% (n = 272) developed ESRD. The hazard ratio (HR) of ESRD was higher in the highest (adjusted HR, 2.13; 95% confidence interval [CI], 1.18-3.84) and lowest (adjusted HR, 1.90; 95% CI, 1.02-3.51) SUA quintiles than in the middle SUA quintile in males and the highest SUA quintile in females (adjusted HR, 2.31; 95% CI, 1.10-4.84). Four-point three percent (n = 6,215) of participants died during a mean follow-up period of 157 months. The hazard ratio (HR) of all-cause mortality was higher in the highest SUA quintile than in the middle SUA quintile in males (adjusted HR, 1.15; 95% CI, 1.03-1.28) and females (adjusted HR, 1.17; 95% CI, 1.01-1.35).ConclusionElevated levels of SUA are associated with increased risk for ESRD and all-cause mortality in both sexes. Low levels of SUA might be related to ESRD and death only in males, showing U-shaped associations. Our findings suggest sex-specific associations between SUA levels and ESRD development and mortality.© 2020 The Korean Academy of Medical Sciences.

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