Gray matter correlations of cognition in incident Parkinson's disease.
We aimed to investigate whether mild cognitive impairment (MCI) in Parkinson's disease (PD) is characterized by region-specific gray matter (GM) atrophy and to explore correlations between GM and cognition in PD. Magnetic resonance images of 42 newly diagnosed PD patients (of which 11 had MCI) and 37 normal controls were analyzed using voxel-based morphometry. Analyses comparing groups showed no regional atrophy, and in patients there were no significant correlations between cognitive domain test performance and GM loss. In conclusion, GM atrophy does not seem to be a major feature of cognitive dysfunction in incident PD.
Dalaker
Turi O
TO
Department of Neurology, Buffalo Neuroimaging Analysis Center, State University of New York at Buffalo, Buffalo, New York, USA. datu@sus.no
Zivadinov
Robert
R
Larsen
Jan P
JP
Beyer
Mona K
MK
Cox
Jennifer L
JL
Alves
Guido
G
Bronnick
Kolbjorn
K
Tysnes
Ole-Bjorn
OB
Antulov
Ronald
R
Dwyer
Michael G
MG
Aarsland
Dag
D
D000368:Aged; D001921:Brain / Q000473:pathology*; D001931:Brain Mapping; D003072:Cognition Disorders / Q000209:etiology* / Q000473:pathology*; D018672:Community Health Planning; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D010300:Parkinson Disease / Q000150:complications*; D011446:Prospective Studies