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  • Title: Inherited 3-methylglutaconic aciduria in two brothers--another defect of leucine metabolism.
    Author: Duran M, Beemer FA, Tibosch AS, Bruinvis L, Ketting D, Wadman SK.
    Journal: J Pediatr; 1982 Oct; 101(4):551-4. PubMed ID: 6181239.
    Abstract:
    Two brothers, aged 7 and 5 years, who excreted large amounts of the leucine metabolites 3-methylglutaconic acid, 3-methylglutaric acid, and 3-hydroxyisovaleric acid, are described. The excretion of these metabolites could be enhanced by increasing the leucine intake. Restriction of the protein intake resulted in a marked reduction of the metabolite excretion. However, the excretion of the ultimate leucine metabolite, 3-hydroxy-3-methylglutaric acid, remained unchanged at a low level. The only clinical abnormality was speech retardation. A (partial) deficiency of 3-methylglutaconyl coenzyme A hydratase is proposed to be the most likely underlying defect.
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