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  • Title: Analysis of the genotypes for aldehyde dehydrogenase 2 in Japanese patients with primary gout.
    Author: Yamanaka H, Kamatani N, Hakoda M, Terai C, Kawaguchi R, Kashiwazaki S.
    Journal: Adv Exp Med Biol; 1994; 370():53-6. PubMed ID: 7660963.
    Abstract:
    Alcoholic ingestion is one of the major factors for increasing serum uric acid levels. Genotypes of aldehyde dehydrogenase 2 (ALDH2, E.C.1.2.1.3), which regulates the sensitivity of an individual to ethanol, were determined in Japanese patients with gout and control subjects by allele specific oligonucleotide hybridization using PCR amplified gene. The most common allele ALDH2*1 codes for normal ALDH2 activity, while the less common allele ALDH2*2 codes for a lower enzyme activity. The frequency of homozygotes of ALDH2*2 was significantly lower in patients with gout than those with rheumatoid arthritis or a normal population. Plasma and urinary hypoxanthine levels were strikingly increased after ethanol drinking in homozygotes for ALDH2*1 but not in heterozygotes for ALDH2*1/ALDH2*2, indicated extensive purine nucleotide degradation in homozygote for ALDH2*1. These data indicated that alcohol ingestion may not be the requisite factor but is deeply involved in the pathogenesis of gout and hyperuricemia.
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