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Parkinsons REM disorder

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https://www.readbyqxmd.com/read/29747690/a53t-%C3%AE-synuclein-overexpression-in-murine-locus-coeruleus-induces-parkinson-s-disease-like-pathology-in-neurons-and-glia
#1
Martin Timo Henrich, Fanni Fruzsina Geibl, Bolam Lee, Wei-Hua Chiu, James Benjamin Koprich, Jonathan Michael Brotchie, Lars Timmermann, Niels Decher, Lina Anita Matschke, Wolfgang Hermann Oertel
Degeneration of noradrenergic locus coeruleus neurons occurs during the prodromal phase of Parkinson's disease and contributes to a variety of non-motor symptoms, e.g. depression, anxiety and REM sleep behavior disorder. This study was designed to establish the first locus coeruleus α-synucleinopathy mouse model, which should provide sufficient information about the time-course of noradrenergic neurodegeneration, replicate cardinal histopathological features of the human Parkinson's disease neuropathology and finally lead to robust histological markers, which are sufficient to assess the pathological changes in a quantitative and qualitative way...
May 10, 2018: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/29735555/genetic-activation-inactivation-and-deletion-reveal-a-limited-and-nuanced-role-for-somatostatin-containing-basal-forebrain-neurons-in-behavioral-state-control
#2
Christelle Anaclet, Roberto De Luca, Anne Venner, Olga Malyshevskaya, Michael Lazarus, Elda Arrigoni, Patrick M Fuller
Recent studies have identified an especially important role for basal forebrain GABAergic (BFVGAT ) neurons in the regulation of behavioral waking and fast cortical rhythms associated with cognition. However, BFVGAT neurons comprise several neurochemically and anatomically distinct sub-populations, including parvalbumin- and somatostatin-containing BFVGAT neurons (BFParv and BFSOM ), and it was recently reported that optogenetic activation of BFSOM neurons increases the probability of a wakefulness to non-rapid-eye movement (NREM) sleep transition when stimulated during the animal's rest period...
May 7, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29734988/change-in-cognition-and-other-non-motor-symptoms-with-obstructive-sleep-apnea-treatment-in-parkinson-disease
#3
Marta Kaminska, Victoria P Mery, Anne-Louise Lafontaine, Ann Robinson, Andrea Benedetti, Priti Gros, R John Kimoff
STUDY OBJECTIVES: Parkinson disease (PD) non-motor symptoms are associated with sleep disorders and impair quality of life. Our objective was to assess the effect of obstructive sleep apnea (OSA) treatment using continuous positive airway pressure (CPAP) on PD non-motor symptoms. METHODS: In this prospective observational study, 67 patients with idiopathic PD underwent polysomnography. Those with moderate-severe OSA were offered CPAP therapy. Subjects were divided into those without OSA (OSA-), and those with OSA (OSA+)...
April 30, 2018: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/29724601/longstanding-disease-free-survival-in-idiopathic-rem-sleep-behavior-disorder-is-neurodegeneration-inevitable
#4
Chun Yao, Seyed-Mohammad Fereshtehnejad, Benjamin K Dawson, Amelie Pelletier, Ziv Gan-Or, Jean-François Gagnon, Jacques Y Montplaisir, Ronald B Postuma
INTRODUCTION: Studies estimate that >80% of patients with idiopathic REM sleep behavior disorder (iRBD) eventually develop parkinsonism or dementia. However, a small group remains disease-free for long periods, raising the question of whether they truly have prodromal disease. METHODS: We selected subjects with iRBD who were diagnosed at least 10 years previously, and were still disease free (longstanding iRBD) (n = 11). We compared them to 'early converters' (n = 27) defined as those who phenoconverted to parkinsonism or dementia within 4 years after diagnosis, and to age- and sex-matched healthy controls (n = 68)...
April 4, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29675716/disturbances-of-sleep-and-alertness-in-parkinson-s-disease
#5
REVIEW
Aleksandar Videnovic
PURPOSE OF REVIEW: Parkinson's disease (PD) is the second most common neurodegenerative disorder. Sleep dysfunction is one of the most common non-motor manifestations of PD that has gained significant interest over the past two decades due to its impact on the daily lives of PD patients, poorly understood mechanisms, and limited treatment options. In this review, we discuss the most common sleep disorders in PD and present recent investigations that have broadened our understanding of the epidemiology, clinical manifestations, diagnosis, and treatment of disturbed sleep and alertness in PD...
April 19, 2018: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/29665124/how-does-dementia-with-lewy-bodies-start-prodromal-cognitive-changes-in-rem-sleep-behavior-disorder
#6
Daphné Génier Marchand, Ronald B Postuma, Frédérique Escudier, Jessie De Roy, Amélie Pelletier, Jacques Montplaisir, Jean-François Gagnon
Objective We describe the progression of cognitive decline and identify the predictive values of cognitive tests in three groups of REM sleep behavior disorder (RBD) patients classified at their last follow-up as having Parkinson's disease (PD), dementia with Lewy bodies (DLB), or still-idiopathic. Methods Patients (n=109) underwent polysomnographic, neurological, and neuropsychological assessments. We used linear mixed-model analyses to compare the progression of cognitive test performance between the three groups over a three-year prodromal period, and performed linear regressions for a six-year prodromal period...
April 17, 2018: Annals of Neurology
https://www.readbyqxmd.com/read/29664048/effect-of-rapid-eye-movement-sleep-behavior-disorder-on-obstructive-sleep-apnea-severity-and-cognition-of-parkinson-s-disease-patients
#7
Jun-Ying Huang, Jin-Ru Zhang, Yun Shen, Hui-Jun Zhang, Yu-Lan Cao, Cheng-Jie Mao, Ya-Ping Yang, Jing Chen, Chun-Feng Liu, Jie Li
Background: Rapid eye movement (REM) sleep behavior disorder (RBD) and obstructive sleep apnea (OSA) are the most common sleep disorders in Parkinson's disease (PD). The aim of this study was to identify whether RBD could alleviate OSA severity in PD patients and its effect on cognitive impairment. Methods: From February 2014 to May 2017, we recruited 174 PD patients from the Second Affiliated Hospital of Soochow University, all of whom underwent polysomnography (PSG)...
April 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29618627/baseline-symptoms-and-basal-forebrain-volume-predict-future-psychosis-in-early-parkinson-disease
#8
Matthew J Barrett, Jamie C Blair, Scott A Sperling, Mark E Smolkin, T Jason Druzgal
OBJECTIVE: Determining baseline predictors of future psychosis in Parkinson disease (PD) may identify those at risk for more rapidly progressive disease, i.e., a more malignant PD subtype. METHODS: This cohort study evaluated 423 patients with newly diagnosed PD collected as part of the Parkinson's Progression Markers Initiative. Psychotic symptoms were assessed with the Movement Disorders Society-Unified Parkinson Disease Rating Scale item 1.2, which assesses hallucinations and psychosis over the past week...
May 1, 2018: Neurology
https://www.readbyqxmd.com/read/29578489/rem-sleep-behavior-disorder-and-alzheimer-s-disease-definitely-no-relationship
#9
Andrea Galbiati, Giulia Carli, Michael Hensley, Luigi Ferini-Strambi
Rapid eye movement (REM) sleep behavior disorder (RBD) is a REM sleep parasomnia characterized by the loss of the typical muscular atonia present during healthy REM sleep. RBD can occur in the absence of other neurological conditions or in association with a neurodegenerative disorder. It is now well established that RBD is a strong predictor of neurodegeneration, in particular synucleinopathies, such as Parkinson's disease, Lewy body dementia (LBD), or multiple system atrophy. However, some longitudinal studies report that a minority of patients develop either overlapping form of dementia or Alzheimer disease's (AD)...
2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29576439/lrrk2-protective-haplotype-and-full-sequencing-study-in-rem-sleep-behavior-disorder
#10
Bouchra Ouled Amar Bencheikh, Jennifer A Ruskey, Isabelle Arnulf, Yves Dauvilliers, Christelle Charley Monaca, Valérie Cochen De Cock, Jean-François Gagnon, Dan Spiegelman, Michele T M Hu, Birgit Högl, Ambra Stefani, Luigi Ferini-Strambi, Giuseppe Plazzi, Elena Antelmi, Peter Young, Anna Heidbreder, Brit Mollenhauer, Friederike Sixel-Döring, Claudia Trenkwalder, Wolfgang Oertel, Jacques Y Montplaisir, Ronald B Postuma, Guy A Rouleau, Ziv Gan-Or
BACKGROUND: Individuals with rapid eye movement (REM)-sleep behavior disorder (RBD) are likely to progress to synucleinopathies, mainly Parkinson's disease (PD), dementia with Lewy-bodies (DLB) and multiple system atrophy (MSA). The genetics of RBD only partially overlaps with PD and DLB, and the role of LRRK2 variants in risk for RBD is still not clear. METHODS: The full coding sequence, exon-intron boundaries and 5' and 3' untranslated regions of LRRK2 were sequenced using targeted next-generation sequencing...
March 21, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29569570/behavioral-and-psychological-symptoms-in-lewy-body-disease-a-review
#11
Lucie Jurek, Mathieu Herrmann, Mathilde Bonze, Sophie Brunet, Catherine Padovan, Jean-Michel Dorey
Dementia with Lewy bodies (DLB) is a common neurodegenerative disease, second in terms of prevalence after Alzheimer's disease (AD). DLB may be suspected according to three core features which are cognitive and motor fluctuations, early visual hallucinations and parkinsonism; and more recently, according to the new criteria, REM sleep behavior disorder (RBD). Behavorial and psychological symptoms associated with DLB are more frequent, more severe and appear earlier than those found in other neurodegenerative diseases...
March 1, 2018: Gériatrie et Psychologie Neuropsychiatrie du Vieillissement
https://www.readbyqxmd.com/read/29560834/comparison-of-structural-connectivity-in-parkinson-s-disease-with-depressive-symptoms-versus-non-depressed-a-diffusion-mri-connectometry-study
#12
Mina Ansari, Sahand Adib Moradi, Farzaneh Ghazi Sherbaf, Abozar Hedayatnia, Mohammad Hadi Aarabi
OBJECTIVE: Research on psychobiological markers of Parkinson's disease (PD) remains a hot topic. Non-motor symptoms such as depression and REM sleep behavior disorder (RBD) each attribute to a particular neurodegenerative cluster in PD, and might enlighten the way for early prediction/detection of PD. The neuropathology of mood disturbances remains unclear. In fact, a few studies have investigated depression using diffusion magnetic resonance imaging (diffusion MRI). METHOD: Diffusion MRI of PD patients without comorbid RBD was used to assess whether microstructural abnormalities are detectable in the brain of 40 PD patients with depression compared to 19 patients without depression...
March 21, 2018: International Psychogeriatrics
https://www.readbyqxmd.com/read/29536584/early-diagnosis-of-lewy-body-disease-in-patients-with-late-onset-psychiatric-disorders-using-clinical-history-of-rapid-eye-movement-sleep-behavior-disorder-and-123-i-metaiodobenzylguanidine-cardiac-scintigraphy
#13
Hiroshige Fujishiro, Masato Okuda, Kunihiro Iwamoto, Seiko Miyata, Youta Torii, Shuji Iritani, Norio Ozaki
AIM: Rapid eye movement sleep behavior disorder (RBD) and psychiatric symptoms often antedate the clinical diagnosis of Parkinson's disease or dementia with Lewy bodies. The purpose of this study was to investigate RBD and its relevance to Lewy body disease (LBD) in patients with late-onset psychiatric disorders. METHODS: Study subjects included 19 patients with late-onset psychiatric disorders who exhibited REM sleep without atonia (RWA), which is a hallmark of RBD on polysomnography, at our psychiatric ward...
March 14, 2018: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/29535855/prevalence-and-clinical-characteristics-of-probable-rem-behavior-disorder-in-thai-parkinson-s-disease-patients
#14
Patama Gomutbutra, Kittika Kanjanaratanakorn, Nantaporn Tiyapun
Background: Previous studies have shown that Parkinson's disease (PD) patients who have REM behavior disorder (PD with RBD) might be a PD subtype since they have different symptom clusters and disease trajectories from PD without RBD. Objective: To study the prevalence of PD with pRBD and to compare the clinical characteristics with PD without pRBD. The feasibility of clinical interview of items adopted from the Mayo Sleep Questionnaire was also to be determined...
2018: Parkinson's Disease
https://www.readbyqxmd.com/read/29530365/the-effect-of-light-exposure-on-insomnia-and-nocturnal-movement-in-parkinson-s-disease-an-open-label-retrospective-longitudinal-study
#15
Jessica K Martino, Christopher B Freelance, Gregory L Willis
Insomnia, hypersomnia and REM Sleep Behavior Disorder (RSBD) during sleep are major problems for patients suffering from Parkinson's disease (PD) but they are also used to predict its onset. While these secondary symptoms detract from the quality of life in PD patients, few treatment options are available due to limited efficacy or risk of complicating the treatment regimen. Light therapy (LT) has been suggested as a strategy for sleep disorders but it has only been implemented recently for use in PD. An open label, retrospective study was undertaken where PD patients had been undergoing LT, using polychromatic light, for four months to 15 years prior...
April 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29522818/extrastriatal-monoaminergic-dysfunction-and-enhanced-microglial-activation-in-idiopathic-rapid-eye-movement-sleep-behaviour-disorder
#16
Morten Gersel Stokholm, Alex Iranzo, Karen Østergaard, Mónica Serradell, Marit Otto, Kristina Bacher Svendsen, Alicia Garrido, Dolores Vilas, Peter Parbo, Per Borghammer, Joan Santamaria, Arne Møller, Carles Gaig, David J Brooks, Eduardo Tolosa, Nicola Pavese
BACKGROUND: The majority of patients diagnosed with idiopathic rapid eye movement sleep behaviour disorder (iRBD) progress over time to a Lewy-type α-synucleinopathy such as Parkinson's disease or dementia with Lewy bodies. This in vivo molecular imaging study aimed to investigate if extrastriatal monoaminergic systems are affected in iRBD patients and if this coincides with neuroinflammation. METHODS: We studied twenty-one polysomnography-confirmed iRBD patients with 18 F-DOPA and 11 C-PK11195 positron emission tomography (PET) to investigate extrastriatal monoaminergic function and microglial activation...
July 2018: Neurobiology of Disease
https://www.readbyqxmd.com/read/29511827/impulse-control-disorders-in-parkinson-s-disease
#17
REVIEW
Ana Marques, Franck Durif, Pierre-Olivier Fernagut
Impulse control disorders (ICD) are frequent side effects of dopamine replacement therapy (DRT) used in Parkinson's disease (PD) with devastating consequences on the patients and caregivers. ICD are behavioural addictions including compulsive gambling, shopping, sexual behaviour, and binge eating that are mainly associated with dopamine D2/D3 agonists. Their management is a real clinical challenge due to the lack of therapeutic alternative. Clinical studies have identified demographic and clinical risk factors for ICD such as younger age at disease onset, male gender, prior history of depression or substance abuse, REM sleep behaviour disorders and higher rate of dyskinesia...
March 7, 2018: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29487000/glucocerebrosidase-gene-variants-are-accumulated-in-idiopathic-rem-sleep-behavior-disorder
#18
Ana Gámez-Valero, Alex Iranzo, Monica Serradell, Dolores Vilas, Joan Santamaria, Carles Gaig, Ramiro Álvarez, Aurelio Ariza, Eduardo Tolosa, Katrin Beyer
INTRODUCTION: Glucocerebrosidase (GBA) gene variants are associated with the development of the Lewy body disorders (LBD) Parkinson disease (PD) and dementia with Lewy bodies (DLB). Idiopathic REM sleep behavior disorder (IRBD) represents prodromal LBD in most instances. We investigated whether GBA variants are overrepresented in IRBD and if their presence shortens the time to conversion to clinically-defined LBD. METHODS: All GBA coding exons from 69 polysomnography-confirmed IRBD patients and 84 matched controls were sequenced by the Sanger method...
May 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29482807/increased-dopaminergic-function-in-the-thalamus-is-associated-with-excessive-daytime-sleepiness
#19
Tayyabah Yousaf, Gennaro Pagano, Flavia Niccolini, Marios Politis
OBJECTIVES/BACKGROUND: Excessive daytime sleepiness (EDS) is a common disorder, which can manifest in isolation or in combination with other neurological or psychiatric disorders. We know relatively little about the mechanisms underlying the development of EDS and the clinical management of patients with EDS remains an unmet need. In this study, we hypothesised that thalamic dopaminergic function would be altered in subjects with EDS and we sought to investigate this by assessing [123 I]FP-CIT Single Photon Emission Computed Tomography (SPECT) data, which is a molecular imaging marker of dopamine transporter (DAT)...
March 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29476004/the-metabolic-pattern-of-idiopathic-rem-sleep-behavior-disorder-reflects-early-stage-parkinson-s-disease
#20
Sanne Katherina Meles, Remco J Renken, Annette Janzen, David Vadasz, Marco Pagani, Dario Arnaldi, Silvia Morbelli, Flavio Nobili, Geert Mayer, Klaus L Leenders, Wolfgang H O Oertel
Rationale: Idiopathic REM sleep behavior disorder (iRBD) is considered a prodromal stage of Parkinson's disease (PD) and other Lewy-body disorders. Spatial covariance analysis of [18 F]-Fluorodeoxyglucose Positron Emission Tomography (18 F-FDG-PET) data has disclosed a specific brain pattern of altered glucose metabolism in PD. In this study, we identify the metabolic pattern underlying iRBD and compare it to the known PD pattern. To understand the relevance of the iRBD pattern to disease progression, we study the expression of the iRBD pattern in de novo PD patients...
February 23, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
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