Journal
CLINICAL AND EXPERIMENTAL NEPHROLOGY
Volume 16, Issue 2, Pages 316-319Publisher
SPRINGER
DOI: 10.1007/s10157-011-0557-3
Keywords
Acute renal failure; Exercise; Hypouricemia; URAT1 gene
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Familial renal hypouricemia is a hereditary disease characterized by extraordinary high renal uric acid (UA) clearance and is associated with acute renal failure (ARF). A 17-year-old Japanese male developed ARF after anerobic exercise. Renal function improved completely after approximately 2 weeks of hydration treatment. After remission, hypouricemia became evident (1.0 mg/dL) from the initial level of UA (4.8 mg/dL) and fractional excretion of uric acid (FEUA) was > 50%. His parents showed normal levels of UA and FEUA. Polymerase chain reaction of a urate anion exchanger known to regulate UA level [SLC22A12 gene: UA transporter 1 (URAT1)] demonstrated compound heterozygous mutations (Q297X and R90H). Thus, we describe a Japanese male with hypouricemia complicated by anerobic exercise-induced ARF, with definite demonstration of a genetic abnormality in the responsible gene, URAT1.
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