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Widespread decrease of nicotinic acetylcholine receptors in Parkinson's disease
Author(s) -
Fujita Masahiro,
Ichise Masanori,
Zoghbi Sami S.,
Liow JeihSan,
Ghose Subroto,
Vines Douglass C.,
Sangare Janet,
Lu JianQiang,
Cropley Vanessa L.,
Iida Hidehiro,
Kim Kyeong Min,
Cohen Robert M.,
BaraJimenez William,
Ravina Bernard,
Innis Robert B.
Publication year - 2006
Publication title -
annals of neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.764
H-Index - 296
eISSN - 1531-8249
pISSN - 0364-5134
DOI - 10.1002/ana.20688
Subject(s) - nicotinic agonist , acetylcholine , acetylcholine receptor , receptor , dopaminergic , neuroscience , medicine , psychology , nicotinic acetylcholine receptor , dopamine
Objective Nicotinic acetylcholine receptors have close interactions with the dopaminergic system and play critical roles in cognitive function. The purpose of this study was to compare these receptors between living PD patients and healthy subjects. Methods Nicotinic acetylcholine receptors were imaged in 10 nondemented Parkinson's disease patients and 15 age‐matched healthy subjects using a single‐photon emission computed tomography ligand [ 123 I]5‐iodo‐3‐[2( S )‐2‐azetidinylmethoxy]pyridine. Using an arterial input function, we measured the total distribution volume ( V ; specific plus nondisplaceable), as well as the delivery ( K 1 ). Results Parkinson's disease showed a widespread significant decrease (approximately 10%) of V in both cortical and subcortical regions without a significant change in K 1 . Interpretation These results indicate the importance of extending the study to demented patients. Ann Neurol 2006;59:174–177