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Sodium valproate in Huntington's chorea.

In a single-case study of Huntington's Chorea the effect of sodium valproate on motor behaviour was first compared with that of L-Dopa and than investigated further alone. Drug effect was assessed in terms of number of EMG-bursts with concurrent determinations of serum-levels of sodium valproate. The main result of this study was the development of a state of tolerance to sodium valproate.

Clinical Trials as Topic↗

Cerebral metabolic changes in biotinidase deficiency.

Clinical and metabolic changes in the central nervous system are described in a patient with biotinidase deficiency before and after biotin treatment. Lactate, pyruvate and 3-hydroxyisovaleric acid as metabolic disease markers were measured in blood, cerebrospinal fluid and brain tissue by biochemical analyses or localized magnetic resonance proton spectroscopy. The patient improved markedly with biotin treatment. Nevertheless, neurological sequelae and abnormal intracerebral lactate concentrations persisted despite normalized metabolic disease markers in extracerebral fluids. Therefore, localized in vivo measurements of intracerebral metabolites may be a valuable tool for elucidating the pathogenesis of biotinidase deficiency.

Amidohydrolases↗