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  • Title: Friedreich ataxia. II. Normal kinetics of lipoamide dehydrogenase.
    Author: Stumpf DA, Parks JK.
    Journal: Neurology; 1979 Jun; 29(6):820-6. PubMed ID: 221857.
    Abstract:
    Lipoamide dehydrogenase (LAD) kinetic values, Km and Vmax, were normal in 11 patients with Friedreich ataxia. Fibroblast activities of the pyruvate and alpha-ketoglutarate dehydrogenase complex, and LAD activities, were also normal. There was no reduction in oxidative decarboxylation of pyruvate, alpha-ketoglutarate, or several other substrates in intact fibroblasts. Methodologic differences may account for differences of opinion about putative abnormalities of the alpha-ketoacid dehydrogenase complexes.
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