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Lumbar cerebrospinal fluid (CSF) acetylcholine (ACh) and choline (Ch) levels were measured in patients with Huntington's chorea (N=11), Parkinson's disease (N=8), and subjects at risk for Huntington's chorea (N=4), and all three groups were found not to differ significantly from normal controls (N=10). The values found for lumbar CSF ACh and Ch levels in the normal subjects were comparable with previously reported values. The use of physostigmine, a cholinesterase inhibitor, in collecting the CSF samples did not appear to make a difference with regard to ACh and Ch concentrations. Evidence suggesting a ventricular-lumbar gradient, with lumbar CSF Ch concentration being less than ventricular CSF Ch concentration, was found. Finally, ACh levels in CSF did not correlate with corresponding Ch levels.

Acetylcholine and choline in cerebrospinal fluid of patients with Parkinson's disease and Huntington's chorea.