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xanthine oxidase

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xanthine oxidase /xan·thine ox·i·dase/ (ok´sĭ-dās) a flavoprotein enzyme that catalyzes the oxidation of hypoxanthine to xanthine and then to uric acid, the final steps in the degradation of purines; deficiency, an autosomal recessive trait, causes xanthinuria.
xanthine
a purine compound found in most bodily tissues and fluids; it is a precursor of uric acid. Xanthine compounds such as theophylline have diuretic properties.

xanthine calculi
see xanthine urolith.
dimethyl xanthine
theobromine.
xanthine oxidase
key enzyme in the pathway for purine breakdown. Catalyzes the conversion of hypoxanthine to xanthine and then to uric acid. Generates hydrogen peroxide, which can be a generator of free radicals in biological systems through reactions with superoxide ions.
trimethyl xanthine
caffeine.


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Xanthine oxidase is the same enzyme that allopurionol works on but Uloric apparently has many fewer side effects.
Abstract The xanthine oxidase (XOD) inhibitory activity and anti-hyperuricemia affect in mice of Cinnamomum osmophloeum, which is an endemic tree in Taiwan, were evaluated in this study.
INDICATIONS FOR URATE-LOWERING THERAPY Urate-lowering therapy consists of treatment with allopurinol, a xanthine oxidase inhibitor, or probenecid, a uricosuric agent, for the purpose of reducing the number of gouty attacks and/or reducing end-organ damage related to gout.
 
 
 
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