Clinical correlations of partial deficiency of lipoamide dehydrogenase

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Article abstract

Reduced activities of lipoamide dehydrogenase (LAD) relative to cytochrome oxidase have been found in 12 of 26 patients with inherited ataxias. One of the 12 patients had adult-onset ataxia plus ragged-red muscle fibers. The other 11 had Friedreich syndrome or early-onset variants of this, as did 6 patients with normal enzyme activity. However, the 11 patients with reduced enzyme activity were clinically more homogeneous than the 6 with normal activity.

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