Uric Acid
Uric acid is the end product of purine metabolism in the human body, it is found in
small amounts in urine, and is poorly soluble in water. Purine precursors include xanthine and hypoxanthine,
which are converted to uric acid by xanthine oxidase, which is found in the liver. Finding xanthine oxidase in the
blood would indicate liver disease. Humans produce only small quantities of uric acid with excess accumulation
leading to a type of arthritis known as gout.In human blood, uric acid concentrations between 3.6 and 8.3 mg/dL are
considered normal , although significantly lower levels are common in vegetarians Vegetarian Diet due to a decreased intake of purine-rich meat.Gout Diet
Of the uric acid produced daily, the biliary and gastrointestinal tracts excrete 30% and the kidney
excretes 70%. Renal excretion of uric acid involves 4 pathways—filtration, reabsorption,
secretion, and postsecretory reabsorption.the major factors that affect urate excretion are the
tubular fluid pH, tubular fluid flow rate, and renal blood flow. The first 2 pathways diminish uric acid and
urate precipitation in the collecting ducts, while the third is important in urate secretion. Overproduction of
uric acid occurs mostly when tissue breakdown is accelerated,this can occur as a result of chemotherapy ,
radiation therapy, or crash dieting.
Reference:McCance, Kathryn RN.PhD & Huether, Sue E.RN,PhD Pathophysiology. Published: The
C.V.Mosby Company 1990.
Read more:Gout Treatment Diet


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