Abstract
Disturbances of pyruvate metabolism have been implicated in the aetiology of several neurological disorders including Leigh's disease and familial ataxia. We have re-investigated a patient whose initial description documented intermittent ataxia, a presumed disorder of pyruvate metabolism and an X-linked pattern of inheritance. Recent studies showed he had slow oxidation of pyruvate, low pyruvate dehydrogenase complex (PDC) activity and immunochemical evidence of E 1 deficiency in skeletal muscle mitochondria. This is consistent with the recent finding that the gene for E 1α is on the X chromosome.
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