Abstract
Glutamate dehydrogenase (GDH) activity in leukocytes and platelets in spinocerebellar degenerations (SCD) was determined. In the same subject, GDH activity was higher and more reproducible in platelets than in leukocytes. GDH was decreased significantly in olivopontocerebellar atrophy (OPCA) (Ca. 30% decrease). Pyruvate dehydrogenase (PDH) in platelets showed non specific decreased activity in SCD and amyotropic lateral sclerosis. Energy metabolism in cerebellum may be diminished in some types of ataxia, and glutaminergic neurons may be more affected in OPCA than in other SCD.
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