Aminoaciduria
Template:Infobox medical condition (new) Aminoaciduria occurs when the urine contains abnormally high amounts of amino acids.[1] In the healthy kidney, the glomeruli filter all amino acids out of the blood, and the renal tubules then reabsorb over 95% of the filtered amino acids back into the blood.[2]
In overflow aminoaciduria, abnormally high concentrations of amino acids in the blood plasma overwhelm the resorptive capacity of the renal tubules, resulting in high concentrations of amino acids in the urine.[3] This may be caused by congenital disorders of amino acid metabolism,[2] for example, phenylketonuria,[4] or may be secondary to liver disease.[2]
In renal aminoaciduria, the renal tubules are unable to reabsorb the filtered amino acids back into the blood, causing high concentrations of amino acids in the urine.[4] This may be caused by a defect in the transport proteins in the renal tubule, for example, as occurs in Hartnup disease,[4] or may be due to damage to the kidney tubule, for example, as occurs in Fanconi syndrome.[3]
References
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External links
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