Liver transplantation in maple syrup urine disease

Wendel, U.; Saudubray, J. M.; Bodner, A.; Schadewaldt, P.
December 1999
European Journal of Pediatrics;1999, Vol. 158 Issue 14, pS060
Academic Journal
Abstract Maple syrup urine disease (MSUD) is an autosomal recessive disorder. Impaired activity of the branched-chain 2-oxoacid dehydrogenase complex (BCOA-DH) causes accumulation of branched-chain L-amino (BCAA) and 2-oxoacids (BCOA) which may exert neurotoxic effects. Treatment comprises dietary management with strictly reduced quantities of protein and BCAA as well as aggressive intervention during acute neonatal and subsequent metabolic complications. MSUD is regarded as a metabolic disorder with potentially favourable outcome when the patients are kept on a carefully supervised long-term therapy. Up to now, three MSUD patients, exhibiting the classical form of the disease, have received orthotopic whole liver transplantation (OLT). Liver replacement resulted in a clear increase in whole body BCOA-DH activity to at least the level of very mild MSUD variants. These patients no longer require protein restricted diets and the risk of metabolic decompensation during catabolic events is apparently abolished.


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