Abstract
Cerebral cortical cholinergic deficits, represented by a decrease in choline acetyltransferase activity, severe losses of nicotinic binding sites as well as cell degeneration in the basal forebrain can be observed in neurodegenerative diseases such as Parkinson's disease and Alzheimer's disease. The potential role of nicotinic acetylcholine receptor subunits as pharmacological targets for the treatment of cognitive deficits raises the question as to what extent these subunits are affected in neurodegenerative diseases. We here report on a significant decrease of the α4 and the α7 nicotinic acetylcholine receptor subunit in cortices of Parkinson patients which turns out to be similar to recent findings in Alzheimer patients.
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