Association between hypouricemia and reduced kidney function: a cross-sectional population-based study in Japan
Minako Wakasugi1, Junichiro James Kazama, Ichiei Narita
1Center for Inter-Organ Communication Research, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
American Journal of Nephrology
|March 21, 2015
Summary
Hypouricemia, or low serum uric acid, is linked to reduced kidney function in men. This finding suggests hypouricemia may be a risk factor for kidney disease, warranting further investigation.
Area of Science:
- Nephrology
- Biochemistry
- Epidemiology
Background:
- Hypouricemia (serum uric acid ≤2 mg/dl) is often considered clinically insignificant.
- Renal hypouricemia increases risks for kidney stones and acute kidney injury, potential indicators of declining kidney function.
Purpose of the Study:
- To investigate the association between hypouricemia and reduced kidney function.
- To test the hypothesis that hypouricemia poses a higher risk for diminished kidney function.
Main Methods:
- A population-based cross-sectional study utilized data from Japan's Specific Health Checkups and Guidance System.
- Logistic analysis assessed the link between hypouricemia and reduced kidney function (estimated glomerular filtration rate <60 ml/min/1.73 m²).
Main Results:
- Hypouricemia was identified in 0.2% of men and 0.4% of women.
- A significant association was found between hypouricemia and reduced kidney function in men (OR, 1.83; 95% CI, 1.23-2.74), but not in women.
- Prevalence of hypouricemia decreased with age in women, but not in men.
Conclusions:
- This study provides the first evidence linking hypouricemia to reduced kidney function specifically in men.
- Further research is necessary to understand the long-term outcomes for individuals with hypouricemia.
