Abstract
An apparently healthy baby with persistent hypermethioninaemia excretes increased amounts of 3-hydroxyisobutyrate, 3-hydroxypropionate, β-aminoisobutyrate and β-alanine. A defect in the oxidation of methylmalonic and malonic semialdehydes is proposed but the cause of the hypermethioninaemia is obscure.
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References
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Tanaka, K., Armitage, I. M., Ramsdell, H. S., Hsia, Y. E., Lipsky, S. R. and Rosenberg, L. E. [13C] Valine metabolism in methylmalonic acidemia using nuclear magnetic resonance: propionate as an obligate intermediate.Proc. Natl. Acad. Sci. USA 72 (1975) 3692–3696
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Congdon, P.J., Haigh, D., Smith, R. et al. Hypermethioninaemia and 3-Hydroxyisobutyric aciduria in an apparently healthy baby. J Inherit Metab Dis 4, 79–80 (1981). https://doi.org/10.1007/BF02263600
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DOI: https://doi.org/10.1007/BF02263600