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A case of alkaptonuria : the first case in Korea  

Nam, Ji Hyung (Department of Pediatrics, College of Medicine, Soonchunhyang University)
Lee, Jong Hyun (Department of Pediatrics, College of Medicine, Soonchunhyang University)
Park, Kyung Bae (Department of Pediatrics, College of Medicine, Soonchunhyang University)
Lee, Dong Hwan (Department of Pediatrics, College of Medicine, Soonchunhyang University)
Publication Information
Clinical and Experimental Pediatrics / v.49, no.3, 2006 , pp. 329-331 More about this Journal
Abstract
Alkaptonuria is a rare metabolic disease in which homogentisic acid cannot be metabolized due to a lack of the enzyme homogentisic acid oxidase. The disease often manifests itself in childhood by darkening of the urine upon standing. The disease leads to such serious consequences as ochronosis of cartilage and connective tissues with arthritis. It is expected that treatment with ascorbic acid and a dietary restriction of protein may decrease the late and serious consequences by diminishing the serum concentration of the metabolite benzoquinone acetic acid. A thirteen month-old girl was recently diagnosed with alkaptonuria by urine organic acid analysis. She excreted pinkish urine on a diaper and as time went by the urine color changed to a light brown. In laboratory findings, urine examination and culture results were normal. But urine organic acid analysis detected abnormal findings a prominent and massive elevation of homogentisic acid. The other physical findings were normal. This is the first case diagnosed in Korea.
Keywords
Dark urine; Alkaptonuria; Ochronosis;
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