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Parkinson's disease and REM sleep behavior disorder result in increased non-motor symptoms.

ABSTRACT: Rapid eye movement (REM)-sleep behavior disorder (RBD) is often comorbid with Parkinson's disease (PD). The current study aimed to provide a detailed understanding of the impact of having RBD on multiple non-motor symptoms (NMS) in patients with PD.A total of 86 participants were evaluated for RBD and assessed for multiple NMS of PD. Principal component analysis was utilized to model multiple measures of NMS in PD, and a multivariate analysis of variance was used to assess the relationship between RBD and the multiple NMS measures. Seven NMS measures were assessed: cognition, quality of life, fatigue, sleepiness, overall sleep, mood, and overall NMS of PD.Among the PD patients, 36 were classified as having RBD (objective polysomnography and subjective findings), 26 as not having RBD (neither objective nor subjective findings), and 24 as probably having RBD (either subjective or objective findings). RBD was a significant predictor of increased NMS in PD while controlling for dopaminergic therapy and age (p=0.01). The RBD group reported more NMS of depression (p=0.012), fatigue (p=0.036), overall sleep (p=0.018), and overall NMS (p=0.002).In PD, RBD is associated with more NMS, particularly increased depressive symptoms, sleep disturbances, and fatigue. More research is needed to assess whether PD patients with RBD represent a subtype of PD with different disease progression and phenomenological presentation.

SUBMITTER: Neikrug AB

PROVIDER: S-EPMC4117926 | biostudies-literature | 2014 Aug

REPOSITORIES: biostudies-literature

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Parkinson's disease and REM sleep behavior disorder result in increased non-motor symptoms.

Neikrug Ariel B AB Avanzino Julie A JA Liu Lianqi L Maglione Jeanne E JE Natarajan Loki L Corey-Bloom Jody J Palmer Barton W BW Loredo Jose S JS Ancoli-Israel Sonia S

Sleep medicine 20140510 8

<h4>Objective</h4>Rapid eye movement (REM)-sleep behavior disorder (RBD) is often comorbid with Parkinson's disease (PD). The current study aimed to provide a detailed understanding of the impact of having RBD on multiple non-motor symptoms (NMS) in patients with PD.<h4>Methods</h4>A total of 86 participants were evaluated for RBD and assessed for multiple NMS of PD. Principal component analysis was utilized to model multiple measures of NMS in PD, and a multivariate analysis of variance was use ...[more]

PMID: 24938585

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Project description:BackgroundSialic acid-protein interactions are involved in regulating central nervous system immunity; therefore, derangements in sialylation could be involved in neurodegeneration.ObjectivesWe evaluate the differences in serum transferrin sialylation in prodromal and early-stage Parkinson's disease (PD), its relation to substantia nigra degeneration, and the risk of phenoconversion to manifest disease.MethodsSixty treatment-naive PD patients; 72 polysomnography-confirmed isolated rapid eye movement sleep behavior disorder (iRBD) patients, that is, patients with prodromal synucleinopathy; and 46 healthy volunteers aged ≥45 years and drinking ≤60 standard drinks per month were included. The proportion of serum low-sialylated, carbohydrate-deficient transferrin (CDT) isoforms was assessed using high-performance liquid chromatography, and the values were adjusted for alcohol intake (CDTadj ). Dopamine transporter single-photon emission computed tomography (DaT-SPECT) imaging was performed. In iRBD, phenoconversion risk of DaT-SPECT and CDTadj was evaluated using Cox regression adjusted for age and sex.ResultsMedian CDTadj was lower in PD (1.1 [interquartile range: 1.0-1.3]%) compared to controls (1.2 [1.1-1.6]%) (P = 0.001). In iRBD, median CDTadj was lower in subjects with abnormal (1.1 [0.9-1.3]%) than normal (1.3 [1.2-1.6]%) DaT-SPECT (P = 0.005). After a median 44-month follow-up, 20% of iRBD patients progressed to a manifest disease. Although iRBD converters and nonconverters did not significantly differ in CDTadj levels (P = 0.189), low CDTadj increased the risk of phenoconversion with hazard ratio 3.2 (P = 0.045) but did not refine the phenoconversion risk associated with abnormal DaT-SPECT yielding hazard ratio 15.8 (P < 0.001).ConclusionsDecreased serum CDTadj is associated with substantia nigra degeneration in synucleinopathies. iRBD patients with low CDTadj are more likely to phenoconvert to manifest disease. © 2022 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson Movement Disorder Society.

Project description:ObjectivesTo develop a polysomnographic video-based scale for rating the severity of REM sleep behavior disorder (RBD), to classify the severity of RBD and to determine the intraindividual variability of RBD in patients with Parkinson disease (PD).MethodsTwenty PD patients identified with RBD were investigated with video-supported polysomnography (PSG). Seventy-three motor behavior events during REM sleep were graded visually and polysomnographically on an event-to-event basis according to categorical location of movements: "0" = no visible movement; "1" = slight movements or jerks "2" = movements involving proximal extremities, including violent behavior; "3" = axial involvement including bed falls. Vocalizations were rated as "1" for present or "0" for absent. Ratings were performed by 2 blinded raters. Reliability was calculated with Cohen's ?. Final RBD severity was determined by the highest score given. This rating scale was then used to compare RBD severity and density, calculated as RBD episodes per REM sleep minute over 2 consecutive nights in 10 additional PD patients with RBD. Statistical significance was determined by effect size (Hedges' g) and calculation of the confidence interval.ResultsInterrater reliability of the scale was 0.8 for movement data and 0.89 for vocalization data. Intraindividual RBD density varied significantly (effect size 0.5 ± 0.22; confidence interval 0.2 to 0.79) by factor 2.5 between the 2 PSG nights. Final RBD severity score differed in 60% of patients between nights 1 and 2. Forty percent of patients showed violent behavior, but only on one night. All patients had severely disturbed sleep with reduced sleep efficiency, loss of slow wave sleep, sleep fragmentation, and an increased periodic limb movement (PLM) index.ConclusionThe RBD severity scale (RBDSS) is a reliable, easy-to-use tool for assessing motor events during REM sleep with PSG. Severity and phenomenology of RBD shows a significant variability in the individual PD patient.

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Parkinson's disease and REM sleep behavior disorder result in increased non-motor symptoms.

Publications

Parkinson's disease and REM sleep behavior disorder result in increased non-motor symptoms.

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