Abstract:
:Dementia with Lewy bodies (DLB) is characterized by preserved whole brain and medial temporal lobe volumes compared with Alzheimer's disease dementia (AD) on magnetic resonance imaging. However, frequently coexistent AD-type pathology may influence the pattern of regional brain atrophy rates in DLB patients. We investigated the pattern and magnitude of the atrophy rates from 2 serial MRIs in autopsy-confirmed DLB patients (n = 20) and mixed DLB/AD patients (n = 22), compared with AD (n = 30) and elderly nondemented control subjects (n = 15), followed antemortem. DLB patients without significant AD-type pathology were characterized by lower global and regional rates of atrophy, similar to control subjects. The mixed DLB/AD patients displayed greater atrophy rates in the whole brain, temporoparietal cortices, hippocampus and amygdala, and ventricle expansion, similar to AD patients. In the DLB and DLB/AD patients, the atrophy rates correlated with Braak neurofibrillary tangle stage, cognitive decline, and progression of motor symptoms. Global and regional atrophy rates are associated with AD-type pathology in DLB, and these rates can be used as biomarkers of AD progression in patients with LB pathology.
journal_name
Neurobiol Agingjournal_title
Neurobiology of agingauthors
Nedelska Z,Ferman TJ,Boeve BF,Przybelski SA,Lesnick TG,Murray ME,Gunter JL,Senjem ML,Vemuri P,Smith GE,Geda YE,Graff-Radford J,Knopman DS,Petersen RC,Parisi JE,Dickson DW,Jack CR Jr,Kantarci Kdoi
10.1016/j.neurobiolaging.2014.07.005subject
Has Abstractpub_date
2015-01-01 00:00:00pages
452-61issue
1eissn
0197-4580issn
1558-1497pii
S0197-4580(14)00474-6journal_volume
36pub_type
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