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| | eMedicine - Maple Syrup Urine Disease : Article Excerpt by: Olaf A Bodamer, MD, PhD, FACMG (Site not responding. Last check: 2007-09-04) |
 | | Background: Maple syrup urine disease (MSUD) is an aminoacidopathy secondary to an enzyme defect in the catabolic pathway of the branched-chain amino acids leucine, isoleucine, and valine. |
 | | In 1960, Dancis et al demonstrated that the enzymatic defect in MSUD was at the level of the decarboxylation of the branched-chain amino acids. |
 | | Accumulation, of leucine in particular, causes neurological symptoms, whereas elevation of plasma isoleucine is associated with the maple syrup odor. |
| www.emedicine.com /ped/byname/maple-syrup-urine-disease.htm (609 words) |
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