Brain neurotransmitter abnormalities in neuronal intranuclear inclusion body disorder.

Biochemical markers for the major neurotransmitter systems were measured in the brain of a patient who died with neuronal intranuclear inclusion disease. A severe nigrostriatal dopamine deficiency constitutes the basis for the parkinsonian features in the patient. A marked loss of brain norepinephrine and serotonin was found in the basal ganglia and hypothalamus. Brain amino acid (gamma-aminobutyric acid and glutamate) and cholinergic (choline acetyltransferase activity) systems were either normal or less severely affected.