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https://www.readbyqxmd.com/read/28429825/validation-of-the-mds-research-criteria-for-prodromal-parkinson-s-disease-longitudinal-assessment-in-a-rem-sleep-behavior-disorder-rbd-cohort
#1
Seyed-Mohammad Fereshtehnejad, Jacques Y Montplaisir, Amelie Pelletier, Jean-François Gagnon, Daniela Berg, Ronald B Postuma
BACKGROUND: Recently, the International Parkinson and Movement Disorder Society introduced the prodromal criteria for PD. Objectives Our study aimed to examine diagnostic accuracy of the criteria as well as the independence of prodromal markers to predict conversion to PD or dementia with Lewy bodies. METHODS: This prospective cohort study was performed on 121 individuals with rapid eye movement sleep behavior disorder who were followed annually for 1 to 12 years...
April 21, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28411417/heart-rate-variability-and-cordance-in-rapid-eye-movement-sleep-as-biomarkers-of-depression-and-treatment-response
#2
Marcel A Pawlowski, Mary Gazea, Bastian Wollweber, Martin Dresler, Florian Holsboer, Martin E Keck, Axel Steiger, Marek Adamczyk, Thorsten Mikoteit
OBJECTIVES: The relevance of rapid eye movement (REM) sleep in affective disorders originates from its well-known abnormalities in depressed patients, who display disinhibition of REM sleep reflected by increased frequency of rapid eye movements (REM density). In this study we examined whether heart rate variability (HRV) and prefrontal theta cordance, both derived from REM sleep, could represent biomarkers of antidepressant treatment response. METHODS: In an open-label, case-control design, thirty-three in-patients (21 females) with a depressive episode were treated with various antidepressants for four weeks...
April 2, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28409245/snca-3-utr-genetic-variants-in-patients-with-parkinson-s-disease-and-rem-sleep-behavior-disorder
#3
M Toffoli, E Dreussi, E Cecchin, M Valente, N Sanvilli, M Montico, S Gagno, M Garziera, M Polano, M Savarese, G Calandra-Buonaura, F Placidi, M Terzaghi, G Toffoli, G L Gigli
REM sleep behavior disorder (RBD) is an early marker of Parkinson's disease (PD); however, it is still unclear which patients with RBD will eventually develop PD. Single nucleotide polymorphisms (SNPs) in the 3'untranslated region (3'UTR) of alpha-synuclein (SNCA) have been associated with PD, but at present, no data is available about RBD. The 3'UTR hosts regulatory regions involved in gene expression control, such as microRNA binding sites. The aim of this study was to determine RBD specific genetic features associated to an increased risk of progression to PD, by sequencing of the SNCA-3'UTR in patients with "idiopathic" RBD (iRBD) and in patients with PD...
April 13, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28408635/cardiac-autonomic-control-and-complexity-during-sleep-are-preserved-after-chronic-sleep-restriction-in-healthy-subjects
#4
Eleonora Tobaldini, Naima Covassin, Andrew Calvin, Prachi Singh, Jan Bukartyk, Shiang Wang, Nicola Montano, Virend K Somers
Acute sleep deprivation (SD) alters cardiovascular autonomic control (CAC) and is associated with an increased risk of cardiovascular disorders. However, the effects of partial SD on CAC are unclear. Thus, we aimed to investigate the effects of partial SD on CAC during sleep. We randomized seventeen healthy subjects to a restriction group (RES, n = 8, subjects slept two-thirds of normal sleep time based on individual habitual sleep duration for 8 days and 8 nights) or a Control group (CON, n = 9, subjects were allowed to sleep their usual sleep time)...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28397169/sleep-disordered-breathing-in-duchenne-muscular-dystrophy
#5
REVIEW
Antonella LoMauro, Maria Grazia D'Angelo, Andrea Aliverti
This review aims to explain the inevitable imbalance between respiratory load, drive, and muscular force that occurs in the natural aging of Duchenne muscular dystrophy and that predisposes these patients to sleep disordered breathing (SDB). In DMD, SDB is characterized by oxygen desaturation, apneas, hypercapnia, and hypoventilation during sleep and ultimately develops into respiratory failure during wakefulness. It can be present in all age groups. Young patients risk obstructive apneas because of weight gain, secondary to progressive physical inactivity and prolonged corticosteroid therapy; older patients hypoventilate and desaturate because of respiratory muscle weakness, in particular the diaphragm...
May 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28389588/probable-rem-sleep-behavior-disorder-and-risk-of-stroke-a-prospective-study
#6
Chaoran Ma, Milena Pavlova, Yesong Liu, Ying Liu, Chunmei Huangfu, Shouling Wu, Xiang Gao
OBJECTIVE: To examine whether probable REM sleep behavior disorder (pRBD) was associated with increased risk of developing stroke in a community-based cohort. METHODS: The study included 12,003 participants (mean age 54.0 years) of the Kailuan Study, free of stroke, cancer, Parkinson disease, dementia, and head injury at baseline (2012). We determined pRBD using a validated REM sleep behavior disorder (RBD) questionnaire in 2012. Incident stroke cases were confirmed by review of medical records...
April 7, 2017: Neurology
https://www.readbyqxmd.com/read/28387681/prevalence-of-prodromal-parkinson-s-disease-as-defined-by-mds-research-criteria-among-elderly-patients-undergoing-colonoscopy
#7
Skorvanek Matej, Ladomirjakova Zuzana, Han Vladimir, Lesko Norbert, Feketeova Eva, Jarcuskova Dominika, Repkova Barbora, Spisak Peter, Urbancikova Zuzana, Vargova Adriana, Gombosova Laura, Zakuciova Maria, Veseliny Eduard, Trebuna Frantisek, Mechirova Eva, Gdovinova Zuzana
BACKGROUND: Gastrointestinal symptoms are a well-recognized and common premotor feature of Parkinson's disease (PD). Moreover, multiple studies have assessed the value of colonic α-synuclein as a potential marker of prodromal PD. Recently, the International Parkinson and Movement Disorders Society (MDS) defined research criteria for prodromal PD. OBJECTIVE: The aim of our study was to test the MDS research criteria in patients undergoing diagnostic colonoscopies as potential candidates for inclusion in prospective trials evaluating colonic biopsies as a potential biomarker of prodromal PD...
April 4, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28375912/disorders-of-taste-and-smell
#8
Ronald DeVere
PURPOSE OF REVIEW: This article aims to educate clinical neurologists on the importance of taste and smell disorders in clinical neurology. These disorders commonly occur in head trauma, multiple sclerosis, seizure disorders, and neurodegenerative diseases such as idiopathic Parkinson disease and dementia, mild cognitive impairment, and Alzheimer disease, just to name a few. This article covers the basic anatomy of smell and taste, notes the important points of taking a proper history, and discusses smell and taste testing, which are inexpensive, minimally time-consuming procedures...
April 2017: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/28372949/sleep-disordered-breathing-in-neuromuscular-disease-diagnostic-and-therapeutic-challenges
#9
REVIEW
Loutfi S Aboussouan, Eduardo Mireles-Cabodevila
Normal sleep related rapid eye movement sleep atonia, reduced lung volumes, reduced chemosensitivity, and impaired airway dilator activity, become significant vulnerabilities in the setting of neuromuscular disease. In that context, the compounding effects of respiratory muscle weakness and disease-specific features that promote upper airway collapse or cause dilated cardiomyopathy, contribute to various sleep-disordered breathing events. The reduction in lung volumes with neuromuscular disease is further compromised by sleep and the supine position, exaggerating the tendency for upper airway collapse and desaturation with sleep-disordered breathing events...
March 31, 2017: Chest
https://www.readbyqxmd.com/read/28367113/transcriptome-analysis-reveals-altered-expression-of-memory-and-neurotransmission-associated-genes-in-the-rem-sleep-deprived-rat-brain
#10
Santosh C Narwade, Birendra N Mallick, Deepti D Deobagkar
Sleep disorders are associated with cognitive impairment. Selective rapid eye movement sleep (REMS) deprivation (REMSD) alters several physiological processes and behaviors. By employing NGS platform we carried out transcriptomic analysis in brain samples of control rats and those exposed to REMSD. The expression of genes involved in chromatin assembly, methylation, learning, memory, regulation of synaptic transmission, neuronal plasticity and neurohypophysial hormone synthesis were altered. Increased transcription of BMP4, DBH and ATP1B2 genes after REMSD supports our earlier findings and hypothesis...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28366329/sodium-oxybate-for-idiopathic-rem-sleep-behavior-disorder-a-report-on-two-patients
#11
Keivan Kaveh Moghadam, Fabio Pizza, Alberto Primavera, Raffaele Ferri, Giuseppe Plazzi
BACKGROUND: REM-sleep behavior disorder (RBD) therapy is based on small to medium-sized case series, as no large controlled clinical trials have been performed. The most used and widely recognized effective drugs are clonazepam and melatonin, with anecdotal reports on the potential benefit of other drug classes. METHODS: We report on two patients suffering from idiopathic RBD presenting with almost nightly complex and violent episodes, refractory to conventional drugs...
April 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28364501/comparison-between-automatic-and-visual-scorings-of-rem-sleep-without-atonia-for-the-diagnosis-of-rem-sleep-behavior-disorder-in-parkinson-disease
#12
Michela Figorilli, Raffaele Ferri, Maurizio Zibetti, Patricia Beudin, Monica Puligheddu, Leonardo Lopiano, Alessandro Cicolin, Frank Durif, Ana Marques, Maria Livia Fantini
Study Objectives: To compare three different methods, two visual and one automatic, for the quantification of rapid eye movement (REM) sleep without atonia (RSWA) in the diagnosis of REM sleep behavior disorder (RBD) in Parkinson's disease (PD) patients. Methods: Sixty-two consecutive patients with idiopathic PD underwent video-polysomnographic recording and showed more than 5 minutes of REM sleep. The electromyogram during REM sleep was analyzed by means of two visual methods (Montréal and SINBAR) and one automatic analysis (REM Atonia Index or RAI)...
February 1, 2017: Sleep
https://www.readbyqxmd.com/read/28364496/pareidolias-in-rem-sleep-behavior-disorder-a-possible-predictive-marker-of-lewy-body-diseases
#13
Taeko Sasai-Sakuma, Yoshiyuki Nishio, Kayoko Yokoi, Etsuro Mori, Yuichi Inoue
Study Objectives: To investigate conditions and clinical significance of pareidolias in patients with idiopathic rapid eyemovent (REM) sleep behavior disorder (iRBD). Methods: This cross-sectional study examined 202 patients with iRBD (66.8 ± 8.0 yr, 58 female) and 46 healthy control subjects (64.7 ± 5.8 years, 14 females). They underwent the Pareidolia test, a newly developed instrument for evoking pareidolias, video polysomnography, olfactory tests, and Addenbrooke's cognitive examination-revised...
February 1, 2017: Sleep
https://www.readbyqxmd.com/read/28364495/sexsomnia-a-specialized-non-rem-parasomnia
#14
Anne-Laure Dubessy, Smaranda Leu-Semenescu, Valérie Attali, Jean-Baptiste Maranci, Isabelle Arnulf
Introduction: To describe patients with sexsomnia and to contrast their clinical and sleep measures with those of healthy controls and sleepwalkers. Aims and Methods: Subjects referred for sexsomnia and for sleepwalking/night terror were interviewed, completed the Paris Arousal Disorder Severity Scale (PADSS), and were monitored 1-2 nights with video-polysomnography. Results: Seventeen patients (70.6% male, aged 17-76 years) had sexsomnia, with amnestic fondling of the bed partner (n = 11), complete sexual intercourse (n = 8), masturbation (n = 8), and spontaneous orgasm (n = 1)...
February 1, 2017: Sleep
https://www.readbyqxmd.com/read/28364455/cntnap2-knockout-rats-and-mice-exhibit-epileptiform-activity-and-abnormal-sleep-wake-physiology
#15
Alexia M Thomas, Michael D Schwartz, Michael D Saxe, Thomas S Kilduff
Study Objectives: Although recent innovations have enabled modification of the rat genome, it is unclear whether enhanced utility of rodents as human disease models will result. We compared electroencephalogram (EEG) and behavioral phenotypes of rats and mice with homozygous deletion of Cntnap2, a gene associated with cortical dysplasia-focal epilepsy (CDFE) and autism spectrum disorders (ASD). Methods: Male contactin-associated protein-like 2 (Cntnap2) knockout (KO) and wild-type (WT) rats and male Cntnap2 KO and WT mice were implanted with telemeters to record EEG, electromyogram, body temperature, and locomotor activity...
January 1, 2017: Sleep
https://www.readbyqxmd.com/read/28364451/objective-measurements-of-energy-balance-are-associated-with-sleep-architecture-in-healthy-adults
#16
Andrea M Spaeth, David F Dinges, Namni Goel
Study Objectives: We objectively measured body composition, energy expenditure, caloric intake, and sleep in a large, diverse sample of healthy men and women and determined how energy balance and diet associated with sleep physiology. Methods: Healthy adults (n = 50; 21-50 years) participated in an in-laboratory study involving two baseline sleep nights (BL1-2, 10 hours time-in-bed/night, 2200-0800 hours). Polysomnography was recorded on BL2. Demographic information, body composition, and energy expenditure measurements were collected at study admittance and on BL1...
January 1, 2017: Sleep
https://www.readbyqxmd.com/read/28364450/detecting-the-cognitive-prodrome-of-dementia-with-lewy-bodies-a-prospective-study-of-rem-sleep-behavior-disorder
#17
Daphné Génier Marchand, Jacques Montplaisir, Ronald B Postuma, Shady Rahayel, Jean-François Gagnon
Study Objectives: Long-term studies in REM sleep behavior disorder (RBD) have shown a high rate of conversion into synucleinopathies. We aimed to prospectively follow-up a large cohort of RBD patients to identify cognitive markers for early detection of prodromal dementia. Methods: Seventy-six idiopathic RBD patients underwent polysomnography and a complete neuropsychological and neurological assessment and were then followed for a mean of 3.6 years. Cognitive characteristics at baseline were compared between patients who remained disease-free and those who developed a synucleinopathy, and between those who developed dementia first and those who developed parkinsonism first...
January 1, 2017: Sleep
https://www.readbyqxmd.com/read/28364416/periodic-limb-movements-during-sleep-mimicking-rem-sleep-behavior-disorder-a-new-form-of-periodic-limb-movement-disorder
#18
Carles Gaig, Alex Iranzo, Montserrat Pujol, Hernando Perez, Joan Santamaria
Study Objectives: To describe a group of patients referred because of abnormal sleep behaviors that were suggestive of rapid eye movement (REM) sleep behavior disorder (RBD) in whom video-polysomnography ruled out RBD and showed the reported behaviors associated with vigorous periodic limb movements during sleep (PLMS). Aims and Methods: Clinical history and video-polysomnography review of patients identified during routine visits in a sleep center. Results: Patients were 15 men and 2 women with a median age of 66 (range: 48-77) years...
March 1, 2017: Sleep
https://www.readbyqxmd.com/read/28363448/trauma-associated-sleep-disorder-a-parasomnia-induced-by-trauma
#19
REVIEW
Vincent Mysliwiec, Matthew S Brock, Jennifer L Creamer, Brian M O'Reilly, Anne Germain, Bernard J Roth
Nightmares and disruptive nocturnal behaviors that develop after traumatic experiences have long been recognized as having different clinical characteristics that overlap with other established parasomnia diagnoses. The inciting experience is typically in the setting of extreme traumatic stress coupled with periods of sleep disruption and/or deprivation. The limited number of laboratory documented cases and symptomatic overlap with rapid eye movement sleep behavior disorder (RBD) and posttraumatic stress disorder (PTSD) have contributed to difficulties in identifying what is a unique parasomnia...
January 30, 2017: Sleep Medicine Reviews
https://www.readbyqxmd.com/read/28361209/correlation-between-clinical-symptoms-and-striatal-dat-uptake-in-patients-with-dlb
#20
Soichiro Shimizu, Disuke Hirose, Nayuta Namioka, Hidekazu Kanetaka, Kentaro Hirao, Hirokuni Hatanaka, Naoto Takenoshita, Yoshitsugu Kaneko, Yusuke Ogawa, Takahiko Umahara, Hirofumi Sakurai, Haruo Hanyu
OBJECTIVE: It is widely known that there is low striatal (123)I-FP-CIT dopamine transporter-single photon emission tomography (DAT-SPECT) uptake in patients with dementia with Lewy bodies (DLB). We assessed the correlation between symptom and regional low DAT uptake in the striatum. METHODS: Patients with Alzheimer's disease (AD) (n = 95) and patients with DLB (n = 133) who underwent DAT-SPECT were enrolled. We examined the correlation between symptoms [cognitive function decline, fluctuations, visual hallucinations, parkinsonism, and REM sleep behavior disorder (RBD)] and regional striatal DAT uptake in the patients with DLB...
March 30, 2017: Annals of Nuclear Medicine
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