Topography, extent, and clinical relevance of neurochemical deficits in dementia of Lewy body type, Parkinson's disease, and Alzheimer's disease

E. K. Perry, I. McKeith, P. Thompson, E. Marshall, J. Kerwin, S. Jabeen, J. A. Edwardson, P. Ince, G. Blessed, D. Irving, R. H. Perry

Research output: Contribution to journalArticlepeer-review

140 Scopus citations

Abstract

Cholinergic and monoaminergic (dopaminergic and serotonergic) activities have been examined in postmortem brain tissue in senile dementia of Lewy body type, Parkinson's disease, and Alzheimer's disease. Quantitative data suggest that although extrapyramidal symptoms relate to striatal levels of dopamine, cognitive impairment is most closely associated with cholinergic (but not monoaminergic) deficits in temporal and archicortical areas. Hallucinations, which are most frequent in Lewy body dementia, appear to be related to an extensive cholinergic deficit in temporal neocortex and the resulting imbalance between decreased cholinergic and relatively preserved serotonergic activities. Topographic analyses such as these including consideration of quantitative 'threshold' effects, may be relevant to the future anatomic focus of neurochemical investigations in dementia and to the development of appropriate experimental models.

Original languageEnglish
Pages (from-to)197-202
Number of pages6
JournalAnnals of the New York Academy of Sciences
Volume640
DOIs
StatePublished - 1991
Externally publishedYes

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