Abstract
In Alzheimer's disease (AD), there is a loss of presynaptic cholinergic markers in the cerebral cortex, but the nature of cholinergic receptor changes is unclear. In this study, [ 3Hacetylcholine and [ 3Hnicotine were used to label nicotinic cholinergic binding sites in cerebral cortical tissues obtained at autopsy from patients with AD and from matched controls. A consistent and severe loss of nicotinic receptors was found in AD.
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