Abnormal baseline brain activity in Parkinson's disease with and without REM sleep behavior disorder: A resting-state functional MRI study.
J Magn Reson Imaging
; 46(3): 697-703, 2017 09.
Article
em En
| MEDLINE
| ID: mdl-27880010
ABSTRACT
PURPOSE:
To investigate the differences in spontaneous brain activity between Parkinson's disease (PD) patients with rapid eye movement sleep behavior disorder (RBD), PD patients without RBD, and normal controls, which may shed new light on the neural mechanism of RBD. MATERIALS ANDMETHODS:
Eighteen PD patients with RBD, 16 patients without RBD, and 19 age- and gender-matched normal controls underwent clinical assessment and functional magnetic resonance imaging (fMRI) with a 3.0T scanner. Resting-state fMRI scans were collected using an echo planar imaging sequence. Amplitude of low-frequency fluctuations (ALFF) were calculated to measure spontaneous brain activity in each subject.RESULTS:
Compared with PD patients without RBD, patients with RBD exhibited significantly decreased ALFF values (P < 0.001, cluster level) in primary motor cortex extending to premotor cortex. Compared with normal controls, PD patients exhibited decreased ALFF values (P < 0.001, cluster level) in caudate and putamen (P < 0.001, cluster level), and increased ALFF values (P = 0.03, cluster level) in prefrontal cortex.CONCLUSION:
The altered spontaneous brain activity in motor cortex may contribute to the pathogenesis of RBD in PD patients, which further supports the idea that the pathophysiology of RBD involves not only midbrain dysfunction but also cerebral cortex abnormalities. Our findings provide additional insight into the neural mechanism of RBD and may drive future research to develop better treatment. LEVEL OF EVIDENCE 3 Technical Efficacy Stage 3 J. MAGN. RESON. IMAGING 2017;46697-703.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doença de Parkinson
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Encéfalo
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Imageamento por Ressonância Magnética
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Transtorno do Comportamento do Sono REM
Limite:
Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article