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- W1974964934 abstract "The purpose of this study was the non-invasive quantitative determination by proton MR Spectroscopy (1H MRS) of alterations in cerebral metabolism in a 19-month-old male infant with severe global developmental delay caused by a Pyruvate Dehydrogenase Complex (PDHC) deficiency due to a mutation at the thiamine binding site. Two investigations were performed at different CSF thiamine concentrations to assess the effect of thiamine supplementation. 1H MR spectra were collected at different echo times (20-270 ms) from a voxel located in the striatum; spectroscopic imaging was done on a larger region including occipital white matter. The tissue levels of N-acetylaspartate and choline were in the normal range, while creatine appeared elevated. Abnormally high lactate and alanine signals were observed both in and outside the striatum; the levels of these metabolites were higher during the second measurement at a lower thiamine concentration. Abnormal cerebral levels of alanine have only been described once before in PDHC deficiency. The 1H MRS profile of this patient reflects the diversity of brain metabolite alterations in patients with this genetically heterogeneous disease." @default.
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- W1974964934 date "1999-07-01" @default.
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- W1974964934 title "Proton MR spectroscopy in a child with pyruvate dehydrogenase complex deficiency" @default.
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- W1974964934 doi "https://doi.org/10.1016/s0730-725x(99)00002-8" @default.
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