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Gadodia R, Nandamuru D, Akberzie W, Kataria L. Sleep Disorders and Aging in Women. Sleep Med Clin 2023; 18:545-557. [PMID: 38501526 DOI: 10.1016/j.jsmc.2023.06.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Women of advancing age can suffer from an array of sleep disorders. We review the changes in sleep architecture, the impact of hormonal changes on sleep, and the various sleep disorders in women of advancing age. A focused history in this population should include the temporal relation to menopause and comorbid conditions. Treatment options should involve patient preference and review of current medications and comorbid conditions to optimize sleep in this population.
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Affiliation(s)
- Ritika Gadodia
- Department of Medicine, Medstar Washington Hospital Center, 110 Irving Street Northwest, Washington, DC 20010, USA
| | - Deepika Nandamuru
- Department of Neurology, George Washington University School of Medicine, GW Medical Faculty Associates, 2150 Pennsylvania Avenue Northwest, Washington, DC 20037, USA
| | - Wahida Akberzie
- Department of Primary Care Medicine, Primary Care Service, Martinsburg VA Medical Center, 510 Butler Avenue, Martinsburg, WV 25405, USA
| | - Lynn Kataria
- Sleep Laboratory, Washington DC VA Medical Center, George Washington University School of Medicine, 3rd Floor, 50 Irving Street Northwest, Washington, DC 20422, USA.
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2
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Li X, Zong Q, Liu L, Liu Y, Shen Y, Tang X, Wing YK, Li SX, Zhou J. Sex differences in rapid eye movement sleep behavior disorder: A systematic review and meta-analysis. Sleep Med Rev 2023; 71:101810. [PMID: 37422999 DOI: 10.1016/j.smrv.2023.101810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 05/28/2023] [Accepted: 06/22/2023] [Indexed: 07/11/2023]
Abstract
Although rapid eye movement (REM) sleep behavior disorder (RBD) has been widely considered as a male-predominant parasomnia, the existing evidence for the sex difference in the risk of RBD in the general population was conflicting. The present study conducted a systematic review to explore the sex differences in the prevalence, comorbidities, clinical characteristics, and phenoconversion of RBD. One hundred thirty-five eligible studies were identified for the systematic review, and 133 were finally included in the meta-analysis. Males in the general population showed a trend for a higher risk of probable/possible RBD (pRBD), especially among the male older adults (aged ≥60). In the clinical populations, males showed a significantly higher risk of confirmed RBD, but not of pRBD. Among idiopathic RBD (iRBD) patients, males had a significantly earlier age onset of RBD compared with females. Male patients with Parkinson's disease (PD) had a higher risk of comorbid RBD. There was no significant sex difference in the risk of developing neurodegenerative diseases in iRBD patients. Large scale and prospective studies utilizing stringent diagnostic criteria for RBD are recommended to further verify the sex differences in RBD and to investigate the mechanism underlying the sex difference.
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Affiliation(s)
- Xiao Li
- Sleep Medicine Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China; Sleep Research Clinic and Laboratory, Department of Psychology, The University of Hong Kong, Hong Kong; The State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong
| | - Qiang Zong
- Department of Trauma Surgery, Hannover Medical School, Germany
| | - Liu Liu
- Department of Anesthesiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Yaping Liu
- Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Yanjiao Shen
- Chinese Evidence-Based Medicine Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xiangdong Tang
- Sleep Medicine Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yun Kwok Wing
- Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Shirley Xin Li
- Sleep Research Clinic and Laboratory, Department of Psychology, The University of Hong Kong, Hong Kong; The State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong.
| | - Junying Zhou
- Sleep Medicine Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China; Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
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3
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During EH, Hernandez B, Miglis MG, Sum-Ping O, Hekmat A, Cahuas A, Ekelmans A, Yoshino F, Mignot E, Kushida CA. Sodium oxybate in treatment-resistant rapid-eye-movement sleep behavior disorder. Sleep 2023; 46:zsad103. [PMID: 37052688 PMCID: PMC10424170 DOI: 10.1093/sleep/zsad103] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 03/14/2023] [Indexed: 04/14/2023] Open
Abstract
STUDY OBJECTIVES Symptomatic therapies for rapid-eye-movement (REM) sleep behavior disorder (RBD) are limited. Sodium oxybate (SXB), a gamma-aminobutyric acid (GABA)-B agonist, could be effective but has not been evaluated against placebo. METHODS This double-blind, parallel-group, randomized, placebo-controlled trial in 24 participants was conducted at the Stanford Sleep Center. Patients were adults with definite iRBD or Parkinson's disease and probable RBD (PD-RBD), and persistence of ≥ 2 weekly episodes despite standard therapy. Patients were randomized 1:1 to receive SXB during a 4-week titration followed by a 4-week stable dosing period. Primary outcome was number of monthly RBD episodes according to a diary filled by patients and partners. Secondary outcomes were severity, number of severe RBD episodes, and objective RBD activity on video polysomnography. RESULTS Twelve iRBD and 12 PD-RBD participated (mean 65.8 years), and 22 (n = 10 SXB, 12 placebo) completed the study. Although no significant between-group difference was found, SXB showed reduction of monthly RBD episodes by 23.1 (95% CI -36.0, -10.2; p = 0.001) versus 10.5 with placebo (95% CI, -22.6, 1.6; p = 0.087). Improvement from baseline was similarly observed for RBD overall severity burden (each episode weighted for severity), number of severe episodes, and objective RBD activity per video-polysomnography. Two participants receiving SXB withdrew due to anxiety and dizziness. The majority of adverse events are otherwise resolved with dose adjustment. CONCLUSION SXB could reduce RBD symptoms; however, response was inconsistent and a large placebo effect was observed across patient-reported outcomes. Larger studies using objective endpoints are needed. CLINICAL TRIAL Treatment of REM Sleep Behavior Disorder (RBD) With Sodium Oxybate https://clinicaltrials.gov/ct2/show/NCT04006925 ClinicalTrials.gov identifier: NCT04006925.
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Affiliation(s)
- Emmanuel H During
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
- Department of Neurology and Neurological Sciences, Stanford University, Palo Alto, CA, USA
- Department of Neurology, Division of Movement Disorders, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Beatriz Hernandez
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
- Sierra Pacific Mental Illness Research Education and Clinical Center (MIRECC), Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Mitchell G Miglis
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
- Department of Neurology and Neurological Sciences, Stanford University, Palo Alto, CA, USA
| | - Oliver Sum-Ping
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
| | - Anahid Hekmat
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
| | - Ana Cahuas
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
| | - Adrian Ekelmans
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
| | - Fuyumi Yoshino
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
- Department of Medicine, Osaka University, Osaka, Japan
| | - Emmanuel Mignot
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
| | - Clete A Kushida
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
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4
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Vincent N, Dirkse D, Giannouli E, McQuarrie A. Transdiagnostic cognitive behavioral therapy for nightmares and parasomnias. J Clin Sleep Med 2023; 19:499-509. [PMID: 36468650 PMCID: PMC9978420 DOI: 10.5664/jcsm.10374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/26/2022] [Accepted: 10/26/2022] [Indexed: 12/12/2022]
Abstract
STUDY OBJECTIVES This pilot study determined whether transdiagnostic cognitive behavioral therapy for parasomnias (CBTp) reduces parasomnia and activity levels during sleep in a sample of adult sleep clinic outpatients. A secondary objective was to assess whether treatment produces improvements in daytime fatigue/sleepiness, perceived cognition, mood, and depression/anxiety/stress, as well as functional impairment in work and leisure activities. METHODS This was a randomized controlled trial with CBTp and self-monitoring control conditions. Participants were 19 adults with a DSM 5 parasomnia disorder who received individual CBTp virtually from their homes. CBTp consisted of psychoeducation, sleep hygiene and safety instructions, relaxation training, parasomnia techniques, and relapse prevention in a 6-week manualized, structured program. RESULTS Using a repeated measures analysis of variance model, and relative to a self-monitoring control condition, results showed that CBTp produced statistically significant improvements in parasomnia frequency, severity, nocturnal activity, and sleep efficiency. There was a trend toward reduced sleep-onset latency and improved work and social adjustment. Of treated participants, 100% rated themselves as improved at study conclusion. CONCLUSIONS Implications of these findings are that cognitive behavioral interventions for parasomnias are effective in lessening parasomnias. More investigation into this type of treatment is warranted. CLINICAL TRIAL REGISTRATION Registry: ClinicalTrials.gov; Name: Impact of Cognitive Behavioral Therapy on Parasomnias; URL: https://clinicaltrials.gov/ct2/show/NCT04633668; Identifier: NCT04633668. CITATION Vincent N, Dirkse D, Giannouli E, McQuarrie A. Transdiagnostic cognitive behavioral therapy for nightmares and parasomnias. J Clin Sleep Med. 2023;19(3):499-509.
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Affiliation(s)
- Norah Vincent
- Department of Clinical Health Psychology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Dale Dirkse
- Department of Clinical Health Psychology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Eleni Giannouli
- Department of Internal Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Amanda McQuarrie
- Department of Psychology, University of Manitoba, Winnipeg, Manitoba, Canada
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Brink-Kjaer A, Gupta N, Marin E, Zitser J, Sum-Ping O, Hekmat A, Bueno F, Cahuas A, Langston J, Jennum P, Sorensen HBD, Mignot E, During E. Ambulatory Detection of Isolated Rapid-Eye-Movement Sleep Behavior Disorder Combining Actigraphy and Questionnaire. Mov Disord 2023; 38:82-91. [PMID: 36258659 PMCID: PMC10092688 DOI: 10.1002/mds.29249] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 09/12/2022] [Accepted: 09/26/2022] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Isolated rapid-eye-movement sleep behavior disorder (iRBD) is in most cases a prodrome of neurodegenerative synucleinopathies, affecting 1% to 2% of middle-aged and older adults; however, accurate ambulatory diagnostic methods are not available. Questionnaires lack specificity in nonclinical populations. Wrist actigraphy can detect characteristic features in individuals with RBD; however, high-frequency actigraphy has been rarely used. OBJECTIVE The aim was to develop a machine learning classifier using high-frequency (1-second resolution) actigraphy and a short patient survey for detecting iRBD with high accuracy and precision. METHODS The method involved analysis of home actigraphy data (for seven nights and more) and a nine-item questionnaire (RBD Innsbruck inventory and three synucleinopathy prodromes of subjective hyposmia, constipation, and orthostatic dizziness) in a data set comprising 42 patients with iRBD, 21 sleep clinic patients with other sleep disorders, and 21 community controls. RESULTS The actigraphy classifier achieved 95.2% (95% confidence interval [CI]: 88.3-98.7) sensitivity and 90.9% (95% CI: 82.1-95.8) precision. The questionnaire classifier achieved 90.6% accuracy and 92.7% precision, exceeding the performance of the Innsbruck RBD Inventory and prodromal questionnaire alone. Concordant predictions between actigraphy and questionnaire reached a specificity and precision of 100% (95% CI: 95.7-100.0) with 88.1% sensitivity (95% CI: 79.2-94.1) and outperformed any combination of actigraphy and a single question on RBD or prodromal symptoms. CONCLUSIONS Actigraphy detected iRBD with high accuracy in a mixed clinical and community cohort. This cost-effective fully remote procedure can be used to diagnose iRBD in specialty outpatient settings and has potential for large-scale screening of iRBD in the general population. © 2022 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Andreas Brink-Kjaer
- Department of Health Technology, Technical University of Denmark, Kongens Lyngby, Denmark.,Department of Clinical Neurophysiology, Danish Center for Sleep Medicine, Rigshospitalet, Denmark.,Department of Psychiatry and Behavioral Sciences, Stanford Center for Sleep Sciences and Medicine, Stanford University, Redwood City, California, USA
| | - Niraj Gupta
- Department of Psychiatry and Behavioral Sciences, Stanford Center for Sleep Sciences and Medicine, Stanford University, Redwood City, California, USA
| | - Eric Marin
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California, USA
| | - Jennifer Zitser
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California, USA.,Movement Disorders Unit, Neurology Department, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Oliver Sum-Ping
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California, USA
| | - Anahid Hekmat
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California, USA
| | - Flavia Bueno
- Department of Psychiatry and Behavioral Sciences, Stanford Center for Sleep Sciences and Medicine, Stanford University, Redwood City, California, USA
| | - Ana Cahuas
- Department of Psychiatry and Behavioral Sciences, Stanford Center for Sleep Sciences and Medicine, Stanford University, Redwood City, California, USA
| | - James Langston
- Department of Pathology, Stanford University, Stanford, California, USA.,Department of Neurology and Neurological Sciences, Stanford University, Stanford, California, USA
| | - Poul Jennum
- Department of Clinical Neurophysiology, Danish Center for Sleep Medicine, Rigshospitalet, Denmark
| | - Helge B D Sorensen
- Department of Health Technology, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Emmanuel Mignot
- Department of Psychiatry and Behavioral Sciences, Stanford Center for Sleep Sciences and Medicine, Stanford University, Redwood City, California, USA
| | - Emmanuel During
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California, USA.,Department of Neurology and Neurological Sciences, Stanford University, Stanford, California, USA.,Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
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6
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Schütz L, Sixel-Döring F, Hermann W. Management of Sleep Disturbances in Parkinson's Disease. JOURNAL OF PARKINSON'S DISEASE 2022; 12:2029-2058. [PMID: 35938257 PMCID: PMC9661340 DOI: 10.3233/jpd-212749] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/23/2022] [Indexed: 06/07/2023]
Abstract
Parkinson's disease (PD) is defined by its motor symptoms rigidity, tremor, and akinesia. However, non-motor symptoms, particularly autonomic disorders and sleep disturbances, occur frequently in PD causing equivalent or even greater discomfort than motor symptoms effectively decreasing quality of life in patients and caregivers. Most common sleep disturbances in PD are insomnia, sleep disordered breathing, excessive daytime sleepiness, REM sleep behavior disorder, and sleep-related movement disorders such as restless legs syndrome. Despite their high prevalence, therapeutic options in the in- and outpatient setting are limited, partly due to lack of scientific evidence. The importance of sleep disturbances in neurodegenerative diseases has been further emphasized by recent evidence indicating a bidirectional relationship between neurodegeneration and sleep. A more profound insight into the underlying pathophysiological mechanisms intertwining sleep and neurodegeneration might lead to unique and individually tailored disease modifying or even neuroprotective therapeutic options in the long run. Therefore, current evidence concerning the management of sleep disturbances in PD will be discussed with the aim of providing a substantiated scaffolding for clinical decisions in long-term PD therapy.
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Affiliation(s)
- Lukas Schütz
- Department of Neurology, University of Rostock, Rostock, Germany
| | | | - Wiebke Hermann
- Department of Neurology, University of Rostock, Rostock, Germany
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7
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The bidirectional relationship between patients’ sleep disorders and their spouses’ sleep quality. Sleep Biol Rhythms 2021. [DOI: 10.1007/s41105-021-00316-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Lee HJ, Choi H, Yoon IY. Age of Diagnosis and Comorbid PLMD Predict Poor Response of REM Behavior Disorder to Clonazepam. J Geriatr Psychiatry Neurol 2021; 34:142-149. [PMID: 32233817 DOI: 10.1177/0891988720915517] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Previous studies have shown the therapeutic effects of clonazepam for rapid eye movement sleep behavior disorder (RBD), but they had several limitations such as the lack of clear definition of treatment outcomes and little information about adjuvant therapy. The aims of this study were to evaluate the treatment outcomes with clonazepam and to explore possible determinants of treatment response. We performed a retrospective medical chart review of 171 patients with RBD. All the participants underwent overnight polysomnography and completed questionnaires. The positive treatment response was defined as the absence of disruptive behaviors causing sleep-related injuries during the last year of follow-up. Among the 171 patients presented with disruptive behaviors, 155 (90.6%) experienced positive treatment responses. Of the responders, 18 (11.6%) received adjunctive medication due to insufficient therapeutic effect of clonazepam monotherapy. After adjusted analysis, an earlier age of diagnosis (odds ratio [OR] = 0.74, 95% confidence interval [CI] = 0.64-0.86, P < .001) and comorbid periodic limb movement during sleep (OR = 4.96, 95% CI = 1.05-23.33, P = .043) were related to poor treatment response. Clinicians should recognize the predictors of poor treatment response and consider combination therapy for better prevention of sleep-related injuries in those who show unsatisfactory responses to clonazepam monotherapy.
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Affiliation(s)
- Hyuk Joo Lee
- Department of Psychiatry, 65462Seoul National University Bundang Hospital, Seongnam, Korea
| | - Hayun Choi
- Department of Psychiatry, Veteran Health Service Medical Center, Seoul, Korea
| | - In-Young Yoon
- Department of Psychiatry, 65462Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Psychiatry, 26725Seoul National University College of Medicine, Seoul, Korea
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9
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Personalized prediction of depression in patients with newly diagnosed Parkinson's disease: A prospective cohort study. J Affect Disord 2020; 268:118-126. [PMID: 32158001 DOI: 10.1016/j.jad.2020.02.046] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/13/2020] [Accepted: 02/27/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Depressive disturbances in Parkinson's disease (dPD) have been identified as the most important determinant of quality of life in patients with Parkinson's disease (PD). Prediction models to triage patients at risk of depression early in the disease course are needed for prognosis and stratification of participants in clinical trials. METHODS One machine learning algorithm called extreme gradient boosting (XGBoost) and the logistic regression technique were applied for the prediction of clinically significant depression (defined as The 15-item Geriatric Depression Scale [GDS-15] ≥ 5) using a prospective cohort study of 312 drug-naïve patients with newly diagnosed PD during 2-year follow-up from the Parkinson's Progression Markers Initiative (PPMI) database. Established models were assessed with out-of-sample validation and the whole sample was divided into training and testing samples by the ratio of 7:3. RESULTS Both XGBoost model and logistic regression model achieved good discrimination and calibration. 2 PD-specific factors (age at onset, duration) and 4 nonspecific factors (baseline GDS-15 score, State Trait Anxiety Inventory [STAI] score, Rapid Eye Movement Sleep Behavior Disorder Screening Questionnaire [RBDSQ] score, and history of depression) were identified as important predictors by two models. LIMITATIONS Access to several variables was limited by database. CONCLUSIONS In this longitudinal study, we developed promising tools to provide personalized estimates of depression in early PD and studied the relative contribution of PD-specific and nonspecific predictors, constituting a substantial addition to the current understanding of dPD.
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Dauvilliers Y, Schenck CH, Postuma RB, Iranzo A, Luppi PH, Plazzi G, Montplaisir J, Boeve B. REM sleep behaviour disorder. Nat Rev Dis Primers 2018; 4:19. [PMID: 30166532 DOI: 10.1038/s41572-018-0016-5] [Citation(s) in RCA: 243] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Rapid eye movement (REM) sleep behaviour disorder (RBD) is a parasomnia that is characterized by loss of muscle atonia during REM sleep (known as REM sleep without atonia, or RSWA) and abnormal behaviours occurring during REM sleep, often as dream enactments that can cause injury. RBD is categorized as either idiopathic RBD or symptomatic (also known as secondary) RBD; the latter is associated with antidepressant use or with neurological diseases, especially α-synucleinopathies (such as Parkinson disease, dementia with Lewy bodies and multiple system atrophy) but also narcolepsy type 1. A clinical history of dream enactment or complex motor behaviours together with the presence of muscle activity during REM sleep confirmed by video polysomnography are mandatory for a definite RBD diagnosis. Management involves clonazepam and/or melatonin and counselling and aims to suppress unpleasant dreams and behaviours and improve bedpartner quality of life. RSWA and RBD are now recognized as manifestations of an α-synucleinopathy; most older adults with idiopathic RBD will eventually develop an overt neurodegenerative syndrome. In the future, studies will likely evaluate neuroprotective therapies in patients with idiopathic RBD to prevent or delay α-synucleinopathy-related motor and cognitive decline.
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Affiliation(s)
- Yves Dauvilliers
- Centre National de Référence Narcolepsie Hypersomnies, Unité des Troubles du Sommeil, Service de Neurologie, Hôpital Gui-de-Chauliac Montpellier, Montpellier, France. .,INSERM, U1061, Montpellier, France, Université Montpellier, Montpellier, France.
| | - Carlos H Schenck
- Minnesota Regional Sleep Disorders Center, and Departments of Psychiatry, Hennepin County Medical Center and University of Minnesota Medical School, Minneapolis, MN, USA
| | - Ronald B Postuma
- Department of Neurology, Montreal General Hospital, Montreal, Quebec, Canada
| | - Alex Iranzo
- Neurology Service, Multidisciplinary Sleep Unit, Hospital Clinic de Barcelona, IDIBAPS, CIBERNED, Barcelona, Spain
| | - Pierre-Herve Luppi
- UMR 5292 CNRS/U1028 INSERM, Center of Research in Neuroscience of Lyon (CRNL), SLEEP Team, Université Claude Bernard Lyon I, Faculté de Médecine RTH Laennec, Lyon, France
| | - Giuseppe Plazzi
- Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy.,IRCCS, Istituto delle Scienze Neurologiche, Bologna, Italy
| | - Jacques Montplaisir
- Department of Psychiatry, Université de Montréal, Québec, Canada and Center for Advanced Research in Sleep Medicine (CARSM), Hôpital du Sacré-Coeur de Montréal, Quebec, Canada
| | - Bradley Boeve
- Department of Neurology and Center for Sleep Medicine, Mayo Clinic, Rochester, MN, USA
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11
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Abstract
So-called idiopathic rapid eye movement (REM) sleep behaviour disorder (RBD), formerly seen as a rare parasomnia, is now recognized as the prodromal stage of an α-synucleinopathy. Given the very high risk that patients with idiopathic RBD have of developing α-synucleinopathies, such as Parkinson disease (PD), PD dementia, dementia with Lewy bodies or multiple system atrophy, and the outstandingly high specificity and very long interval between the onset of idiopathic RBD and the clinical manifestations of α-synucleinopathies, the prodromal phase of this disorder represents a unique opportunity for potentially disease-modifying intervention. This Review provides an update on classic and novel biomarkers of α-synuclein-related neurodegeneration in patients with idiopathic RBD, focusing on advances in imaging and neurophysiological, cognitive, autonomic, tissue-specific and other biomarkers. We discuss the strengths, potential weaknesses and suitability of these biomarkers for identifying RBD and neurodegeneration, with an emphasis on predicting progression to overt α-synucleinopathy. The role of video polysomnography in providing quantifiable and potentially treatment-responsive biomarkers of neurodegeneration is highlighted. In light of all these advances, and the now understood role of idiopathic RBD as an early manifestation of α-synuclein disease, we call for idiopathic RBD to be reconceptualized as isolated RBD.
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