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REM sleep behavior disorder and neuropathology in Parkinson's disease
Author(s) -
Postuma Ronald B.,
Adler Charles H.,
Dugger Brittany N.,
Hentz Joseph G.,
Shill Holly A.,
DriverDunckley Erika,
Sabbagh Marwan N.,
Jacobson Sandra A.,
Belden Christine M.,
Sue Lucia I.,
Serrano Geidy,
Beach Thomas G.
Publication year - 2015
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.26347
Subject(s) - neuropathology , rem sleep behavior disorder , autopsy , parkinson's disease , dementia , lewy body , pathological , pathology , medicine , psychology , rapid eye movement sleep , disease , neuroscience , eye movement
Rapid eye movement (REM) sleep behavior disorder (RBD) in Parkinson's disease (PD) is associated with differences in clinical phenotype, including dementia, autonomic loss, and gait dysfunction. The pathological basis for this remains unclear. Methods Parkinson's disease subjects in a longitudinal clinicopathologic study were screened for probable RBD with the Mayo Sleep Questionnaire. After death, semiquantitative analyses were conducted for synuclein, amyloid, neurofibrillary tangles, and cerebrovascular lesions. Results Forty cases had probable RBD (PD+RBD), and 41 did not (PD‐RBD). Despite similar age at death (∼80 y) and disease duration (∼14.5 y), PD+RBD had increased synuclein deposition in all regions examined, with nine of 10 regions significantly different. The Lewy body 10‐region total score (scale = 0‐40) was 29.5 in PD+RBD versus 24.5 in PD‐RBD (Cohen‐d effect size = 0.79, P = 0.002). Cerebrovascular lesion burden was slightly higher in PD‐RBD. Conclusions Although overlap occurs between groups, PD patients with probable RBD may have greater density and range of synuclein pathology on autopsy. © 2015 International Parkinson and Movement Disorder Society