J Sleep Med.  2015 Dec;12(2):27-33. 10.13078/jsm.15006.

Clinical Biomarkers of Neurodegeneration in REM Sleep Behavior Disorder

• Zhou J
• Zhang J
• Lam SP
• Tang X
• Wing YK

• KMID: 2223615
• DOI: http://doi.org/10.13078/jsm.15006

Abstract

Rapid eye movement sleep behavior disorder (RBD) is currently considered as a prodromal stage of alphasynucleinopathies neurodegeneration. The update data suggested that over 80% patients with idiopathic RBD eventually developed neurodegenerative disease after a mean of 14 years interval from the onset of RBD. A series of potential biomarkers have been identified to predict the development of neurodegeneration in idiopathic RBD, including olfactory loss, color vision deficit, depression, mild cognitive impairment, excessive daytime sleepiness, dopamine dysfunction, and tonic electromyographic activity. Early recognition of the predictive markers of neurodegeneration in idiopathic RBD is essential for development of intervention or prevention strategies at the presymptomatic stage. Nonetheless, the current literature is lacking biomarkers that might reflect the alpha-synuclein neuropathology at the earliest stages. Future studies with large samples and systematic follow-up are needed to confirm more potential markers of neurodegeneration at its early stages.

Keyword

REM sleep behavior disorder; Neurodegeneration; Biomarkers; Parkinson's disease

MeSH Terms

alpha-Synuclein
Biomarkers*
Color Vision
Depression
Dopamine
Follow-Up Studies
Humans
Mild Cognitive Impairment
Neurodegenerative Diseases
Parkinson Disease
Prodromal Symptoms
REM Sleep Behavior Disorder*
Sleep, REM*
Dopamine
alpha-Synuclein