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REM sleep behavior disorder

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https://www.readbyqxmd.com/read/28315757/chronic-social-stress-leads-to-altered-sleep-homeostasis-in-mice
#1
Nadja Olini, Iru Rothfuchs, Damiano Azzinnari, Christopher R Pryce, Salome Kurth, Reto Huber
Disturbed sleep and altered sleep homeostasis are core features of many psychiatric disorders such as depression. Chronic uncontrollable stress is considered an important factor in the development of depression, but little is known on how chronic stress affects sleep regulation and sleep homeostasis. We therefore examined the effects of chronic social stress (CSS) on sleep regulation in mice. Adult male C57BL/6 mice were implanted for electrocortical recordings (ECoG) and underwent either a 10-day CSS protocol or control handling (CON)...
March 15, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28303851/tonic-electromyogram-density-in-multiple-system-atrophy-with-predominant-parkinsonism-and-parkinson-s-disease
#2
Yi Wang, Yun Shen, Kang-Ping Xiong, Pei-Cheng He, Cheng-Jie Mao, Jie Li, Fu-Yu Wang, Ya-Li Wang, Jun-Ying Huang, Chun-Feng Liu
BACKGROUND: Both Parkinson's disease (PD) and multiple system atrophy (MSA) have associated sleep disorders related to the underlying neurodegenerative pathology. Clinically, MSA with predominant parkinsonism (MSA-P) resembles PD in the manifestation of prominent parkinsonism. Whether the amount of rapid eye movement (REM) sleep without atonia could be a potential marker for differentiating MSA-P from PD has not been thoroughly investigated. This study aimed to examine whether sleep parameters could provide a method for differentiating MSA-P from PD...
March 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28288482/a-multicenter-comparative-study-of-impulse-control-disorder-in-latin-american-patients-with-parkinson-disease
#3
Carolina Candelaria Ramírez Gómez, Marcos Serrano Dueñas, Oscar Bernal, Natalia Araoz, Michel Sáenz Farret, Victoria Aldinio, Verónica Montilla, Federico Micheli
OBJECTIVES: Impulse control disorder (ICD) is a common adverse effect in patients with Parkinson disease who receive dopamine agonists; however, other factors are involved in its manifestations. To study the frequency and factors involved in the development of this adverse effect in a Latin American population, we conducted a cross-sectional multicenter study. METHODS: Two hundred fifty-five patients in 3 Latin American centers were evaluated by examination and application of scales (Unified Parkinson's Disease Rating Scale, Questionnaire for Impulsive-Compulsive Disorders in Parkinson's Disease-Rating Scale, Hoehn and Yahr, Clinical Impression of Severity Index for Parkinson's Disease)...
March 2017: Clinical Neuropharmacology
https://www.readbyqxmd.com/read/28268523/differences-in-white-matter-microstructure-between-parkinson-s-disease-patients-with-and-without-rem-sleep-behavior-disorder
#4
Farzaneh Rahmani, Mina Ansari, Atefeh Pooyan, Mehdi M Mirbagheri, Mohammad Hadi Aarabi
REM sleep behavior disorder (RBD) is characterized by increased muscle tone and violent limb movements and usually occurs during the early stages of Parkinson disease (PD). PD patients with RBD represent faster motor progression and cognitive dysfunction. We used diffusion imaging to assess which regions are involved in this phenomenon. In the current study, we computed Quantitative Anisotropic (QA), which is based on spin distribution function (SDF) that quantifies the density of diffusing water and is more sensitive to psychological differences between groups and also diffusion MRI connectometry to conduct group analysis between age and gender matched PD patients with and without RBD...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28261151/the-treatment-of-sleep-disorders-in-parkinson-s-disease-from-research-to-clinical-practice
#5
REVIEW
Giuseppe Loddo, Giovanna Calandra-Buonaura, Luisa Sambati, Giulia Giannini, Annagrazia Cecere, Pietro Cortelli, Federica Provini
Sleep disorders (SDs) are one of the most frequent non-motor symptoms of Parkinson's disease (PD), usually increasing in frequency over the course of the disease and disability progression. SDs include nocturnal and diurnal manifestations such as insomnia, REM sleep behavior disorder, and excessive daytime sleepiness. The causes of SDs in PD are numerous, including the neurodegeneration process itself, which can disrupt the networks regulating the sleep-wake cycle and deplete a large number of cerebral amines possibly playing a role in the initiation and maintenance of sleep...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28246970/rem-theta-activity-enhances-inhibitory-control-in-typically-developing-children-but-not-children-with-adhd-symptoms
#6
Amanda Cremone, Claudia I Lugo-Candelas, Elizabeth A Harvey, Jennifer M McDermott, Rebecca M C Spencer
Sleep disturbances impair cognitive functioning in typically developing populations. Children with attention-deficit/hyperactivity disorder (ADHD), a disorder characterized by impaired inhibitory control and attention, commonly experience sleep disturbances. Whether inhibitory impairments are related to sleep deficits in children with ADHD is unknown. Children with ADHD (n = 18; M age = 6.70 years) and typically developing controls (n = 15; M age = 6.73 years) completed a Go/No-Go task to measure inhibitory control and sustained attention before and after polysomnography-monitored overnight sleep...
February 28, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28244984/schizophrenia-like-phenotypes-in-mice-with-nmda-receptor-ablation-in-intralaminar-thalamic-nucleus-cells-and-gene-therapy-based-reversal-in-adults
#7
K Yasuda, Y Hayashi, T Yoshida, M Kashiwagi, N Nakagawa, T Michikawa, M Tanaka, R Ando, A Huang, T Hosoya, T J McHugh, M Kuwahara, S Itohara
In understanding the mechanism of schizophrenia pathogenesis, a significant finding is that drug abuse of phencyclidine or its analog ketamine causes symptoms similar to schizophrenia. Such drug effects are triggered even by administration at post-adolescent stages. Both drugs are N-methyl-d-aspartate receptor (NMDAR) antagonists, leading to a major hypothesis that glutamate hypofunction underlies schizophrenia pathogenesis. The precise region that depends on NMDAR function, however, is unclear. Here, we developed a mouse strain in which NMDARs in the intralaminar thalamic nuclei (ILN) were selectively disrupted...
February 28, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28231463/neural-circuitry-of-wakefulness-and-sleep
#8
REVIEW
Thomas E Scammell, Elda Arrigoni, Jonathan O Lipton
Sleep remains one of the most mysterious yet ubiquitous animal behaviors. We review current perspectives on the neural systems that regulate sleep/wake states in mammals and the circadian mechanisms that control their timing. We also outline key models for the regulation of rapid eye movement (REM) sleep and non-REM sleep, how mutual inhibition between specific pathways gives rise to these distinct states, and how dysfunction in these circuits can give rise to sleep disorders.
February 22, 2017: Neuron
https://www.readbyqxmd.com/read/28228742/sleep-dependent-consolidation-of-rewarded-behavior-is-diminished-in-children-with-attention-deficit-hyperactivity-disorder-and-a-comorbid-disorder-of-social-behavior
#9
Christian D Wiesner, Ina Molzow, Alexander Prehn-Kristensen, Lioba Baving
Children suffering from attention-deficit hyperactivity disorder (ADHD) often also display impaired learning and memory. Previous research has documented aberrant reward processing in ADHD as well as impaired sleep-dependent consolidation of declarative memory. We investigated whether sleep also fosters the consolidation of behavior learned by probabilistic reward and whether ADHD patients with a comorbid disorder of social behavior show deficits in this memory domain, too. A group of 17 ADHD patients with comorbid disorders of social behavior aged 8-12 years and healthy controls matched for age, IQ, and handedness took part in the experiment...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28226697/differences-in-white-matter-microstructure-between-parkinson-s-disease-patients-with-and-without-rem-sleep-behavior-disorder
#10
Farzaneh Rahmani, Mina Ansari, Atefeh Pooyan, Mehdi M Mirbagheri, Mohammad Hadi Aarabi, Farzaneh Rahmani, Mina Ansari, Atefeh Pooyan, Mehdi M Mirbagheri, Mohammad Hadi Aarabi, Mehdi M Mirbagheri, Farzaneh Rahmani, Atefeh Pooyan, Mina Ansari, Mohammad Hadi Aarabi
REM sleep behavior disorder (RBD) is characterized by increased muscle tone and violent limb movements and usually occurs during the early stages of Parkinson disease (PD). PD patients with RBD represent faster motor progression and cognitive dysfunction. We used diffusion imaging to assess which regions are involved in this phenomenon. In the current study, we computed Quantitative Anisotropic (QA), which is based on spin distribution function (SDF) that quantifies the density of diffusing water and is more sensitive to psychological differences between groups and also diffusion MRI connectometry to conduct group analysis between age and gender matched PD patients with and without RBD...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28219749/behavioral-phenotypes-associated-with-mptp-induction-of-partial-lesions-in-common-marmosets-callithrix-jacchus
#11
Kimberley A Phillips, Corinna N Ross, Jennifer Spross, Catherine J Cheng, Alyssa Izquierdo, K C Biju, Cang Chen, Senlin Li, Suzette D Tardif
Parkinson's disease is a chronic neurodegenerative disorder with the core motor features of resting tremor, bradykinesia, rigidity, and postural instability. Non-motor symptoms also occur, and include cognitive dysfunction, mood disorders, anosmia (loss of smell), and REM sleep disturbances. As the development of medications and other therapies for treatment of non-motor symptoms is ongoing, it is essential to have animal models that aid in understanding the neural changes underlying non-motor PD symptoms and serve as a testing ground for potential therapeutics...
February 17, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28215267/a-community-based-study-of-risk-factors-for-probable-rapid-eye-movement-sleep-behavior-disorder
#12
Jian-Fang Ma, Yuan Qiao, Xiang Gao, Liang Liang, Xiao-Li Liu, Dun-Hui Li, Hui-Dong Tang, Sheng-Di Chen
OBJECTIVES: To cross-sectionally explore the potential risk factors for rapid eye movement (REM) sleep behavior disorder (RBD) in a community cohort in Shanghai. METHODS: Based on the validated RBD screening questionnaire (RBDSQ), we identified individuals with probable RBD (pRBD) in 3635 community-dwelling residents (≥50 years old) from an urban community of Shanghai. Potential risk factors of pRBD, including age, sex, smoking, socioeconomic status, obesity, consumption of tea (surrogate for caffeine intake) and alcohol, medications and chronic disease status, were assessed via questionnaire...
February 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28215261/rem-sleep-behavior-disorder-causing-subdural-hematoma
#13
Oscar Ramos-Campoy, Carles Gaig, Monica Villas, Alex Iranzo, Joan Santamaria
No abstract text is available yet for this article.
February 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28201721/diagnostic-value-of-isolated-mentalis-versus-mentalis-plus-upper-limb-electromyography-in-idiopathic-rem-sleep-behavior-disorder-patients-eventually-developing-a-neurodegenerative-syndrome
#14
Ana Fernández-Arcos, Alex Iranzo, Mónica Serradell, Carles Gaig, Marc Guaita, Manel Salamero, Joan Santamaria
No abstract text is available yet for this article.
February 13, 2017: Sleep
https://www.readbyqxmd.com/read/28163603/rem-sleep-behavior-disorder-rbd-update-on-diagnosis-and-treatment
#15
Birgit Högl, Ambra Stefani
BACKGROUND: REM sleep behavior disorder (RBD) is parasomnia characterized by dream enactment and enabled by disruption of physiological muscle atonia during REM sleep. Over the past few years, diagnostic criteria and the methods used to confirm diagnosis have been updated. OBJECTIVE: In this review article, the current knowledge regarding RBD diagnosis and treatment is presented. METHODS: A selective literature search was carried out. RESULTS AND DISCUSSION: Although several RBD screening questionnaires have been developed, diagnosis can only be definitely confirmed on the basis of polysomnography...
2017: Somnologie: Schlafforschung und Schlafmedizin, Somnology: Sleep Research and Sleep Medicine
https://www.readbyqxmd.com/read/28160778/meta-analysis-on-the-prevalence-of-rem-sleep-behavior-disorder-symptoms-in-parkinson-s-disease
#16
Jia Zhang, Chuan-Ying Xu, Jun Liu
BACKGROUND: Our study was aimed to evaluate the risk of a selected non-motor symptom, namely rapid eye movement behavior disorder (RBD) symptoms, among patients with newly diagnosed Parkinson disease compared with health controls. METHODS: The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines for meta-analysis and Cochrane manual were followed. Studies on RBD symptoms and PD were searched using PubMed, Embase, Web of Science and Cochrane library databases...
February 4, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28132976/diagnosis-disease-notification-and-management-of-rapid-eye-movement-rem-sleep-behavior-disorder
#17
Takayoshi Shimohata, Yuichi Inoue, Koichi Hirata
Rapid eye movement (REM) sleep behavior disorder (RBD) is a parasomnia characterized by dream enactment behavior during REM sleep. It has been demonstrated that patients with idiopathic RBD are at a significantly increased risk of developing one of the α-synucleinopathies later in life, and this is called "phenoconversion". Although some physicians argue against disclosing information that could cause patients psychological stress, the patients also have a "right to know" about their own disease. Therefore, determining when and how to disclose this information, in addition to appropriate follow-up, is important...
February 25, 2017: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/28128401/expression-of-prion-protein-in-the-cerebrospinal-fluid-of-patients-with-parkinson-s-disease-complicated-with-rapid-eye-movement-sleep-behavior-disorder
#18
W J Zhang, X L Shang, J Peng, M H Zhou, W J Sun
Parkinson's disease (PD) is one of the most common neurodegenerative diseases and mainly manifests with decreasing numbers of dopaminergic neurons. Rapid eye movement (REM) sleep behavior disorder (RBD) has an incidence of 15-47% in all PD patients. Prion proteins (PrPs), which are expressed in both neurons and glial cells of the brain, are believed to be correlated with abnormal neurological functions, although their role in PD-related sleeping disorders remains unclear. We therefore investigated the expressional profiles of PrP in PD patients with RBD...
January 23, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28120040/is-increased-spinal-nociception-another-hallmark-for-parkinson-s-disease
#19
Evangelia Boura, Maria Stamelou, David Vadasz, Vincent Ries, Marcus M Unger, Georg Kägi, Wolfgang H Oertel, Jens C Möller, Veit Mylius
Augmented spinal nociception during the "off" phase has been observed early in Parkinson's disease further increasing with disease duration. To find out whether increased spinal nociception represents a premotor feature, experimental pain sensitivity was assessed in idiopathic REM-sleep behavior disorder (IRBD) patients with or without signs of a neurodegenerative disorder compared to early Parkinson's disease (ePD) patients and healthy controls (HC). Spinal nociception as measured by the nociceptive flexion reflex (NFR) and experimental pain sensitivity as measured by heat and electrical pain thresholds were determined in 14 IRBD, 15 ePD patients in the medication-defined "off" state and 27 HC in an explorative cohort study...
January 24, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28108469/blood-rna-biomarkers-in-prodromal-park4-and-rem-sleep-behavior-disorder-show-role-of-complexin-1-loss-for-risk-of-parkinson-s-disease
#20
Suna Lahut, Suzana Gispert, Özgür Ömür, Candan Depboylu, Kay Seidel, Jorge Antolio Domínguez-Bautista, Nadine Brehm, Hülya Tireli, Karl Hackmann, Caroline Pirkevi, Barbara Leube, Vincent Ries, Kerstin Reim, Nils Brose, Wilfred F den Dunnen, Madrid Johnson, Zsuzsanna Wolf, Marc Schindewolf, Wiebke Schrempf, Kathrin Reetz, Peter Young, David Vadasz, Achilleas S Frangakis, Evelin Schröck, Helmuth Steinmetz, Marina Jendrach, Udo Rüb, Ayşe Nazlı Başak, Wolfgang Oertel, Georg Auburger
Parkinson's disease (PD) is a frequent neurodegenerative process at old age. Accumulation and aggregation of the lipid-binding SNARE complex component alpha-synuclein (SNCA) underlies this vulnerability and defines stages of disease progression. Determinants of SNCA levels and mechanisms of SNCA neurotoxicity are intensely investigated. In view of physiological SNCA roles in blood to modulate vesicle release, we studied blood samples from a new large pedigree with SNCA gene duplication (PARK4 mutation), to identify effects of SNCA gain-of-function as potential disease biomarkers...
January 20, 2017: Disease Models & Mechanisms
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