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https://www.readbyqxmd.com/read/29911300/confounding-factors-in-ecg-based-detection-of-sleep-disordered-breathing
#1
Christoph Maier, Hartmut Dickhaus
OBJECTIVES: To assess the relevance of various potential confounding factors (comorbidities, obesity, body position, ECG lead, respiratory event type and sleep stage) on the detectability of sleep-related breathing disorders from the ECG. METHODS: A set of 140 simultaneous recordings of polysomnograms and 8-channel Holter ECGs taken from 121 patients with suspected sleep related breathing disorders is stratified with respect to the named factors. Minute-by-minute apnea detection performance is assessed using separate receiver operating characteristics curves for each of the subgroups...
May 2018: Methods of Information in Medicine
https://www.readbyqxmd.com/read/29909941/sleep-and-disruptive-mood-dysregulation-disorder-a-pilot-actigraphy-study
#2
R Delaplace, S Garny de La Rivière, M Bon Saint Come, H Lahaye, I Popov, N Rey, A Visticot, J-M Guilé
OBJECTIVE: To explore the clinical characteristics and motor activity profile during sleep periods of children and adolescents presenting with disruptive mood dysregulation disorder (DMDD). METHOD: Twenty-one youths (mean age±standard deviation, 11.7±3 years) wore a wrist actigraph for 9 consecutive days (including both school days and non-school days), to measure sleep parameters: sleep latency, sleep efficiency and the number and duration of periods of wakefulness after sleep onset (WASO)...
June 14, 2018: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/29908300/acute-and-chronic-escitalopram-alter-eeg-gamma-oscillations-differently-relevance-to-therapeutic-effects
#3
Noémi Papp, Szilvia Vas, Emese Bogáthy, Zita Kátai, Diána Kostyalik, György Bagdy
Brain oscillations in the gamma frequency band of the electroencephalogram (EEG) have been implicated in several sensory and cognitive processes, and have also been associated with numerous neuropsychiatric disorders, including depression. The widely prescribed selective serotonin reuptake inhibitors (SSRIs), similarly to other antidepressants, are known to produce markedly different effects on sleep and behavioral measures with acute and chronic administration. Although there are studies examining the acute effect of escitalopram on slower (<30 Hz) oscillations, we hardly could find any data about the effect of the drug on higher-frequency EEG oscillations (>30 Hz) in different sleep-wake stages, particularly comparing the acute and chronic effects of the drug concerning gamma oscillations...
June 13, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29902391/sleep-disorders-and-the-risk-of-stroke
#4
Mollie McDermott, Devin L Brown, Ronald D Chervin
Stroke is a major cause of disability and death in the United States and across the world, and the incidence and prevalence of stroke are expected to rise significantly due to an aging population. Obstructive sleep apnea, an established independent risk factor for stroke, is a highly prevalent disease that is estimated to double the risk of stroke. It remains uncertain whether non-apnea sleep disorders increase the risk of stroke. Areas covered: This paper reviews the literature describing the association between incident stroke and sleep apnea, REM sleep behavior disorder, restless legs syndrome, periodic limb movements of sleep, insomnia, and shift work...
June 14, 2018: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/29898972/diffuse-lewy-body-disease-manifesting-as-corticobasal-syndrome-a-rare-form-of-lewy-body-disease
#5
Koji Kasanuki, Keith A Josephs, Tanis J Ferman, Melissa E Murray, Shunsuke Koga, Takuya Konno, Nobutaka Sakae, Adam Parks, Ryan J Uitti, Jay A Van Gerpen, Neill R Graff-Radford, Zbigniew K Wszolek, Dennis W Dickson
OBJECTIVE: To describe clinical and pathologic characteristics of diffuse Lewy body disease (DLBD) manifesting as corticobasal syndrome (CBS). METHODS: In 523 autopsy-confirmed cases of DLBD, we identified 11 patients diagnosed with CBS. For comparison, we studied 22 DLBD brains with antemortem presentation of dementia with Lewy bodies (DLB). Given previous studies suggesting the importance of pathology in peri-Rolandic cortices in CBS, we used digital pathology to count Lewy bodies and to quantify intracytoplasmic and neuritic α-synuclein and phospho-tau burden in the motor cortex...
June 13, 2018: Neurology
https://www.readbyqxmd.com/read/29896152/a-review-of-scales-to-evaluate-sleep-disturbances-in-movement-disorders
#6
REVIEW
Mónica M Kurtis, Roberta Balestrino, Carmen Rodriguez-Blazquez, Maria João Forjaz, Pablo Martinez-Martin
Patients with movement disorders have a high prevalence of sleep disturbances that can be classified as (1) nocturnal sleep symptoms, such as insomnia, nocturia, restless legs syndrome (RLS), periodic limb movements (PLM), obstructive sleep apnea (OSA), and REM sleep behavior disorder; and (2) diurnal problems that include excessive daytime sleepiness (EDS) and sleep attacks. The objective of this review is to provide a practical overview of the most relevant scales that assess these disturbances to guide the choice of the most useful instrument/s depending on the line of research or clinical focus...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29894769/sleep-patterns-deteriorate-over-time-in-chronic-corticosterone-treated-rats
#7
Xiang-Yu Cui, Guang Yang, Su-Ying Cui, Qing Cao, Yuan-Li Huang, Hui Ding, Hui Ye, Xue-Qiong Zhang, Zi-Jun Wang, Yong-He Zhang
Repeated corticosterone (CORT) injections reliably produce depressive-like behavior in rodents. Our previous study showed that sleep parameters were altered in rats after daily injections of CORT for 7 days, and sleep disturbances appeared to be correlated with depressive-like behavior. The aim of the present study was to investigate time-dependent correlations between changes in sleep parameters and the formation of depressive-like behavior in rats after more prolonged treatment with CORT. Rats received daily injections of CORT (40 mg/kg, s...
June 9, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29892043/obesity-and-anthropometric-determinants-of-autonomic-control-in-children-with-sleep-disordered-breathing-which-measurements-matter
#8
Lisa M Walter, Knarik Tamanyan, Lauren C Nisbet, Margot J Davey, Gillian M Nixon, Rosemary S C Horne
BACKGROUND: Obesity and anthropometric measurements predict more severe sleep-disordered breathing (SDB) in children, and are associated with cardiovascular risk factors in children without SDB. We aimed to investigate whether anthropometric measurements predicted autonomic control in children with SDB. We hypothesised that anthropometric measures would be significant predictors of decreased heart rate variability. METHODS: Children (3-17 years) with SDB (n = 298) and non-snoring controls (n = 126) underwent polysomnography...
June 11, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29887829/accuracy-of-rating-scales-and-clinical-measures-for-screening-of-rapid-eye-movement-sleep-behavior-disorder-and-for-predicting-conversion-to-parkinson-s-disease-and-other-synucleinopathies
#9
REVIEW
Matej Skorvanek, Eva Feketeova, Monica M Kurtis, Jan Rusz, Karel Sonka
Rapid eye movement (REM) sleep behavior disorder (RBD) is characterized by repeated episodes of REM sleep-related vocalizations and/or complex motor behaviors. Definite diagnosis of RBD is based on history and polysomnography, both of which are less accessible due to the lack of trained specialists and high cost. While RBD may be associated with disorders like narcolepsy, focal brain lesions, and encephalitis, idiopathic RBD (iRBD) may convert to Parkinson's disease (PD) and other synucleinopathies in more than 80% of patients and it is to date the most specific clinical prodromal marker of PD...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29887129/the-impact-of-subthalamic-deep-brain-stimulation-on-polysomnographic-sleep-pattern-in-patients-with-parkinson-s-disease-preliminary-report
#10
Jarosław Dulski, Michał Schinwelski, Agnieszka Konkel, Karol Grabowski, Witold Libionka, Piotr Wąż, Sitek E J, Jarosław Sławek
AIM OF THE STUDY: We present the preliminary results of the study focused on the impact of subthalamic deep brain stimulation (DBS-STN) on sleep and other non-motor symptoms (NMS). MATERIALS AND METHODS: Ten patients with advanced PD, underwent two-night polysomnography (PSG) mean 1.1 week before surgery and 6.2 months post DBS programming. NMS were assessed with a set of scales before surgery and 6 months and 12 months following DBS programming. RESULTS: Contrary to previous studies, we noted deterioration of sleep pattern in the follow-up PSG...
June 1, 2018: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/29883833/rapid-eye-movement-sleep-behavior-disorder-and-the-link-to-alpha-synucleinopathies
#11
REVIEW
Daniel A Barone, Claire Henchcliffe
Rapid eye movement (REM) sleep behavior disorder (RBD) involves REM sleep without atonia in conjunction with a recurrent nocturnal dream enactment behavior, with vocalizations such as shouting and screaming, and motor behaviors such as punching and kicking. Secondary RBD is well described in association with neurological disorders including Parkinson's disease (PD), multiple system atrophy (MSA), and other conditions involving brainstem structures such as tumors. However, RBD alone is now considered to be a potential harbinger of later development of neurodegenerative disorders, in particular PD, MSA, dementia with Lewy bodies (DLB), and pure autonomic failure...
May 29, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29880143/the-prospective-memory-of-patients-with-idiopathic-rem-sleep-behavior-disorder
#12
Xudong Li, Kang Wang, Shuhong Jia, Zhi Zhou, Yi Jin, Xiangfei Zhang, Chunlei Hou, Wenjing Zheng, Pei Rong, Jinsong Jiao
BACKGROUND: Idiopathic rapid eye movement sleep behavior disorder (iRBD) likely represents the prodromal stage of synucleinopathy. The present study was to investigate if there was prospective memory (PM) impairment and the relationship between different PM tasks and traditional cognitive tests in patients with iRBD. METHODS: A total of 28 patients with iRBD, 25 with Parkinson's disease (PD) and 21 healthy controls were included. The Cambridge Prospective Memory Test (CAMPROMPT) was used to measure the PM including time-based (TBPM) and event-based PM (EBPM)...
July 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29867529/sleep-instabilities-assessed-by-cardiopulmonary-coupling-analysis-increase-during-childhood-and-adolescence
#13
Dirk Cysarz, Maijana Linhard, Georg Seifert, Friedrich Edelhäuser
The electrocardiogram-based cardiopulmonary coupling (CPC) technique may be used to track sleep instabilities. With progressing age, maturational changes during childhood and adolescence affect sleep. The objective was to assess developmental changes in sleep instabilities in a natural setting. ECGs during nighttime sleep on regular school days were recorded from 363 subjects aged 4 to 22 years (204 females). The estimated total sleep time (ETST) decreased from 598 to 445 min during childhood and adolescence...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29867419/in-home-sleep-recordings-in-military-veterans-with-posttraumatic-stress-disorder-reveal-less-rem-and-deep-sleep-1-hz
#14
Julie A Onton, Scott C Matthews, Dae Y Kang, Todd P Coleman
Veterans with posttraumatic stress disorder (PTSD) often report suboptimal sleep quality, often described as lack of restfulness for unknown reasons. These experiences are sometimes difficult to objectively quantify in sleep lab assessments. Here, we used a streamlined sleep assessment tool to record in-home 2-channel electroencephalogram (EEG) with concurrent collection of electrodermal activity (EDA) and acceleration. Data from a single forehead channel were transformed into a whole-night spectrogram, and sleep stages were classified using a fully automated algorithm...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29866443/in-vivo-staging-of-pathology-in-rem-sleep-behaviour-disorder-a-multimodality-imaging-case-control-study
#15
Karoline Knudsen, Tatyana D Fedorova, Allan K Hansen, Michael Sommerauer, Marit Otto, Kristina B Svendsen, Adjmal Nahimi, Morten G Stokholm, Nicola Pavese, Christoph P Beier, David J Brooks, Per Borghammer
BACKGROUND: Accumulating evidence suggests that α-synuclein aggregates-a defining pathology of Parkinson's disease-display cell-to-cell transmission. α-synuclein aggregation is hypothesised to start in autonomic nerve terminals years before the appearance of motor symptoms, and subsequently spread via autonomic nerves to the spinal cord and brainstem. To assess this hypothesis, we investigated sympathetic, parasympathetic, noradrenergic, and dopaminergic innervation in patients with idiopathic rapid eye movement (REM) sleep behaviour disorder, a prodromal phenotype of Parkinson's disease...
June 1, 2018: Lancet Neurology
https://www.readbyqxmd.com/read/29860260/twenty-years-after-another-case-report-of-melatonin-effects-on-rem-sleep-behavior-disorder-using-serial-dopamine-transporter-imaging
#16
Dieter Kunz, Frederik Bes
INTRODUCTION: REM sleep behavior disorder (RBD) is considered a prodromal phase of α-synucleinopathy like Parkinson disease (PD). PD is characterized by a progressive decline of dopamine (DA) in the striatum. Here we report the surprising increase in DA transporter density over successive years in an RBD patient treated with melatonin. CASE PRESENTATION: A then 72-year-old man was clinically suspected to suffer from PD in 2011. DA transporter scintigraphy (DaTSCAN) revealed reduced DA transporter density, and the patient was diagnosed with developing PD...
June 1, 2018: Neuropsychobiology
https://www.readbyqxmd.com/read/29859587/the-characteristics-and-clinical-significance-of-rem-10-in-children-with-sleep-disordered-breathing
#17
Liqiang Yang, Zhenyun Huang, Jianwen Zhong, Shuyao Qiu, Dabo Liu
OBJECTIVE: Fractional time in REM sleep <20% ('little REM sleep') is indicative of more severe sleep-disordered breathing (SDB) in adults. We examined if other REM% is predictive of more severe SDB in children. METHODS: In this retrospective study of 616 pediatric SDB patients, age, sex ratio, BMI, sleep efficiency, awakening frequency, sleep latency, apnea-hypopnea index (AHI), obstructive apnea index (OAI), and lowest oxygen pulse saturation (LSpO2 ) were compared among groups stratified according to REM%: REM≥20%, REM<20%, 15% ≤ REM<20%, 10% ≤ REM<15%, and REM<10%...
July 2018: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29846796/the-rem-sleep-circuit-and-how-its-impairment-leads-to-rem-sleep-behavior-disorder
#18
REVIEW
Alex Iranzo
REM sleep is characterized by rapid eye movements, desynchronized electroencephalographic activity, dreams and muscle paralysis that preclude the individual from acting out the action of dreams. REM sleep is generated and modulated by a complex and still poorly understood, neuronal network that involves multiple nuclei and neurotransmission systems. The key structures that generate REM sleep muscle paralysis are the subcoeruleus nucleus in the mesopontine tegmentum and the reticular formation of the ventral medial medulla...
May 30, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29796717/the-sleep-disorder-in-anti-lglon5-disease
#19
REVIEW
Carles Gaig, Alex Iranzo, Joan Santamaria, Francesc Graus
PURPOSE OF REVIEW: To review the clinical and polysomnographic features of the sleep disorder occurring in the recently described anti-IgLON5 disease. The hallmark of the disease is the presence of antibodies against IgLON5, a neural cell adhesion molecule of unknown function. The disease presents a robust HLA association, and the neuropathological examination shows a novel neuronal tauopathy with predominant hypothalamic and brainstem involvement. RECENT FINDINGS: Most patients (> 80%) present sleep-related vocalizations with movements and behaviors and sleep-disordered breathing...
May 23, 2018: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/29790977/alpha-synuclein-aggregates-in-labial-salivary-glands-of-idiopathic-rapid-eye-movement-sleep-behavior-disorder
#20
Alx Iranzo, Sergi Borrego, Isabel Vilaseca, Carles Martí, Mónica Serradell, Raquel Sánchez-Valle, Gabor G Kovacs, Francesc Valldeoriola, Carles Gaig, Joan Santamaria, Eduard Tolosa, Ellen Gelpi
Study Objectives : To assess whether biopsy of the labial minor salivary glands safely detects phosphorylated alpha-synuclein (pAS) deposits in idiopathic REM sleep behavior disorder (IRBD), a condition that precedes the cardinal manifestations of synuclein disorders associated with Lewy type pathology, namely Parkinson disease (PD) and dementia with Lewy bodies (DLB). Methods: In a prospective study, labial biopsy of the minor salivary glands was performed in 62 IRBD patients, 13 PD and 10 DLB patients who were initially diagnosed with IRBD, and in 33 controls...
May 22, 2018: Sleep
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