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Parasomnias

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https://www.readbyqxmd.com/read/29453926/sleep-disorder-prevalence-in-at-risk-adolescents-and-potential-effects-of-nightmare-triad-syndrome
#1
Natalia D McIver, Barry Krakow, Jessica Krakow, Michael R Nadorff, Victor A Ulibarri, Robert Baade
Objective At-risk high school students, those considered to have a higher probability for academic failure or dropping out, were assessed for various sleep disorders. Effects were compared between students with and without the nightmare triad syndrome (NTS+), the sleep disorders' cluster of frequent nightmares, insomnia disorder and suspected sleep-disordered breathing (SDB). Methods Data were gathered at a charter school for at-risk youth using: computer based surveys, physical airway exams, and mental health interviews by school social worker...
February 17, 2018: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/29452128/are-sleep-disturbances-causally-linked-to-the-presence-and-severity-of-psychotic-like-dissociative-and-hypomanic-experiences-in-non-clinical-populations-a-systematic-review
#2
REVIEW
Jack Barton, Simon D Kyle, Filippo Varese, Steven H Jones, Gillian Haddock
The present review aimed to 1) identify what sleep disturbances co-occur alongside psychotic-like, dissociative and hypomanic experiences; 2) assess the strength of potential associations between the severity of sleep disturbances and of the experiences studied; and 3) appraise evidence for a causal link. MedLine and PsycInfo were searched and 44 studies were deemed eligible. Results showed that insomnia was associated with all individual psychotic-like, dissociative and hypomanic experiences reviewed (effect size range: small-to-large)...
February 13, 2018: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29432244/pediatric-sleep-disorders
#3
Kiran Maski, Judith Owens
PURPOSE OF REVIEW: This article provides an overview of the clinical features, diagnosis, and treatment of insomnia, restless legs syndrome, periodic limb movements of sleep, parasomnias, narcolepsy, and sleep-related breathing disorders among children and adolescents. RECENT FINDINGS: Pediatric presentations of sleep disorders differ from adult presentations, making diagnosis challenging. Specific clinical syndromes, such as cataplexy in children with narcolepsy type 1, can have an altogether different presentation compared to adult-onset symptoms, contributing to diagnostic delays and potential misdiagnoses...
February 2018: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/29430839/effects-of-l-carnosine-supplementation-on-sleep-disorders-and-disease-severity-in-autistic-children-a-randomized-controlled-clinical-trial
#4
Zahra Mehrazad-Saber, Sorayya Kheirouri, Seyyed-Gholamreza Noorazar
Sleep disorders are frequently reported in autistic patients. Evidences suggest that increased oxidative stress and reduced antioxidants may play a major role in the pathogenesis of these disorders. Carnosine acts as an antioxidant, antitoxic and neuroprotective agent. The aim of this trial study was to examine the effects of carnosine supplementation on the sleep disorders and severity of autism core symptoms in autistic patients. In this double-blind, randomized clinical trial, 43 autistic patients (31 boys and 12 girls; aged 4 to 16 years) were divided into two groups of carnosine and control that received 500 mg of carnosine and 500 mg of placebo per day for two months, respectively...
February 11, 2018: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29412983/parasomnias-and-sleep-related-movement-disorders-in-older-adults
#5
REVIEW
Alex Iranzo
Parasomnias and sleep-related movement disorders are important problems in older adults. Sleep paralysis is rare, but may occur in families. In a minority of patients with disorders of arousal, the episodes persist until the age of 70. Zolpidem and other medications may induce sleepwalking and sleep-related eating. Most patients with idiopathic rapid eye movement (REM) sleep behavior disorder eventually develop Parkinson's disease or dementia with Lewy bodies. Anti-IgLON5 disease includes abnormal behaviors in NREM and REM sleep...
March 2018: Sleep Medicine Clinics
https://www.readbyqxmd.com/read/29403431/acquired-sleep-related-hypermotor-epilepsy-with-disrupted-white-matter-tracts-assessed-by-multishell-diffusion-magnetic-resonance-imaging
#6
Zahari N Tchopev, Ping-Hong Yeh, Greg W Morgan, Eric Meyer, Johanna M Wolf, John M Ollinger, Gerard P Riedy, Lisa C Young
Sleep-related hypermotor epilepsy (SHE) (previously frontal lobe epilepsy) is a rare seizure disorder commonly misdiagnosed or unrecognized, causing negative patient sequelae. While usually reported in familial studies, it is more commonly acquired. Diagnosis is a challenge due to its low incidence in comparison with the more common sleep disorders or psychogenic etiologies in the differential diagnosis. Diagnosis is scaled on degree of certainty based on described or clinically documented semiology, with video EEG as a helpful, but not necessary, adjunct...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29402935/ventromedial-medulla-inhibitory-neuron-inactivation-induces-rem-sleep-without-atonia-and-rem-sleep-behavior-disorder
#7
Sara Valencia Garcia, Frédéric Brischoux, Olivier Clément, Paul-Antoine Libourel, Sébastien Arthaud, Michael Lazarus, Pierre-Hervé Luppi, Patrice Fort
Despite decades of research, there is a persistent debate regarding the localization of GABA/glycine neurons responsible for hyperpolarizing somatic motoneurons during paradoxical (or REM) sleep (PS), resulting in the loss of muscle tone during this sleep state. Combining complementary neuroanatomical approaches in rats, we first show that these inhibitory neurons are localized within the ventromedial medulla (vmM) rather than within the spinal cord. We then demonstrate their functional role in PS expression through local injections of adeno-associated virus carrying specific short-hairpin RNA in order to chronically impair inhibitory neurotransmission from vmM...
February 5, 2018: Nature Communications
https://www.readbyqxmd.com/read/29386491/-a-case-of-severe-obstructive-sleep-apnea-mimicking-rem-sleep-behavior-disorder
#8
Yoko Fujii, Mutsumi Okura, Hidekazu Uemori, Mitsutaka Taniguchi, Motoharu Ohi
The rapid eye movement (REM) sleep behavior disorder (RBD) is a parasomnia characterized by dream-enacting behaviors related to the loss of the normal generalized skeletal muscle atonia during REM sleep, and shows REM sleep without atonia (RWA) during polysomnography (PSG). Patients with idiopathic RBD have been known to have a siginificantly increased risk of developing one of the α-synucleiopathies later in life, therefore the diagnosis of RBD is very important and must be dealt with carefully. A 51-year-old man was identified presenting dream-enacting behaviors and unpleasant dreams suggesting the diagnosis of RBD, in addition to snoring and excessive daytime sleepiness...
January 31, 2018: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/29360192/diagnostic-criteria-for-disorders-of-arousal-a-video-polysomnography-assessment
#9
Régis Lopez, Yun Shen, Sofiene Chenini, Anna Laura Rassu, Elisa Evangelista, Lucie Barateau, Isabelle Jaussent, Yves Dauvilliers
STUDY OBJECTIVES: To assess video-polysomnographic (vPSG) criteria and their cut-off values for the diagnosis of disorders of arousal (DOA; sleepwalking, sleep terror). METHODS: One hundred and sixty adult patients with DOA and 50 sex- and age-matched healthy participants underwent a clinical evaluation and vPSG assessment to quantify slow wave sleep (SWS) interruptions (SWS fragmentation index; slow/mixed and fast arousal ratios and indexes per hour) and the associated behaviors...
January 23, 2018: Annals of Neurology
https://www.readbyqxmd.com/read/29325115/fast-sleep-spindle-density-is-associated-with-rs4680-val108-158met-genotype-of-catechol-o-methyltransferase-comt
#10
Claudia Schilling, Lena Gappa, Michael Schredl, Fabian Streit, Jens Treutlein, Josef Frank, Michael Deuschle, Andreas Meyer-Lindenberg, Marcella Rietschel, Stephanie H Witt
Study Objectives: Sleep spindles are a hallmark of NREM stage 2 sleep. Fast sleep spindles correlate with cognitive functioning, and are reduced in schizophrenia. Although spindles are highly genetically determined, distinct genetic mechanisms influencing sleep spindle activity have not been identified so far. Spindles are generated within a thalamo-cortical network. Dopaminergic neurotransmission modulates activity within this network and importantly depends on activity of catechol-O-methyltransferase (COMT)...
January 6, 2018: Sleep
https://www.readbyqxmd.com/read/29307436/a-15-year-old-boy-with-mysterious-variability-in-apnea-hypopnea-index
#11
Anna M May, Kamal Gandotra, Dennis H Auckley
A 15-year-old boy presented as a direct referral for polysomnography for evaluation of snoring, unrefreshing sleep, and daytime sleepiness despite a self-reported average of 8 hours of sleep a night. The mother reported he snored intermittently, although there were no witnessed apneic episodes or fragmented sleep. He denied morning headaches. He reported that his sleep was generally unrefreshing and he would experience significant daytime sleepiness, especially after school or when doing his homework. However, his Epworth Sleepiness Scale score was only 3 of 24...
January 2018: Chest
https://www.readbyqxmd.com/read/29295578/devices-for-ambulatory-monitoring-of-sleep-associated-disorders-in-children-with-neurological-diseases
#12
Adriana Ulate-Campos, Melissa Tsuboyama, Tobias Loddenkemper
Good sleep quality is essential for a child's wellbeing. Early sleep problems have been linked to the later development of emotional and behavioral disorders and can negatively impact the quality of life of the child and his or her family. Sleep-associated conditions are frequent in the pediatric population, and even more so in children with neurological problems. Monitoring devices can help to better characterize sleep efficiency and sleep quality. They can also be helpful to better characterize paroxysmal nocturnal events and differentiate between nocturnal seizures, parasomnias, and obstructive sleep apnea, each of which has a different management...
December 25, 2017: Children
https://www.readbyqxmd.com/read/29262470/-sleep-problems-and-the-association-with-the-levels-of-6-sulfatoxymelatonin-in-children-with-autism-spectrum-disorder
#13
P P Han, M Y Zou, X L Yang, X C Liu, S Liang, C H Sun, W Xia, L J Wu
Objective: To identify the prevalence of sleep problems in children with autism spectrum disorder (ASD) and to explore the association with the main melatonin metabolite, 6-sulfatoxymelatonin (6-SM). Method: This was a prospective case-control study. Children with ASD were recruited from Child Development and Behavioral Research Center (CDBRC) of the Harbin Medical University and Harbin Special Education School from October 2015 to April 2017 (ASD group) . Healthy controls were selected from five kindergartens and one primary school in Harbin by the stratified cluster random sampling (control group) ...
December 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29258840/sleep-related-hypermotor-syndrome-an-arousal-parasomnia-or-nocturnal-frontal-lobe-epilepsy
#14
EDITORIAL
Sudhansu Chokroverty
No abstract text is available yet for this article.
September 21, 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29216391/prevalence-and-determinants-of-rem-sleep-behavior-disorder-in-the-general-population
#15
José Haba-Rubio, Birgit Frauscher, Pedro Marques-Vidal, Jérôme Toriel, Nadia Tobback, Daniela Andries, Martin Preisig, Peter Vollenweider, Ronald Postuma, Raphaël Heinzer
Study Objectives: REM sleep behavior disorder (RBD) is a parasomnia associated with neurodegenerative synucleinopathies. Its prevalence is largely unknown. This study determined the prevalence and characteristics of RBD in the general population using gold-standard polysomnography. Methods: Full polysomnographic data from 1997 subjects (age=59±11.1 years, 53.6% women) participating in a population-based study (HypnoLaus, Lausanne, Switzerland) were collected. Sleep-related complaints and habits were investigated using various sleep measures including the Munich Parasomnia Screening (MUPS) questionnaire, which includes two questions evaluating complex motor behaviors suggestive of RBD...
December 5, 2017: Sleep
https://www.readbyqxmd.com/read/29170501/idiopathic-rem-sleep-behaviour-disorder-and-neurodegeneration-an-update
#16
REVIEW
Birgit Högl, Ambra Stefani, Aleksandar Videnovic
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...
January 2018: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/29117888/the-rem-sleep-behavior-disorder-screening-questionnaire-validation-study-of-the-korean-version-rbdq-kr
#17
Sooyeoun You, Hye-Jin Moon, So Young Do, Yun-Kwok Wing, Jun-Sang Sunwoo, Ki-Young Jung, Yong Won Cho
STUDY OBJECTIVES: REM sleep behavior disorder (RBD) is a parasomnia that is commonly associated with neurodegenerative disorders. We aimed to validate the Hong Kong version of the self-reported RBD questionnaire (RBDQ-HK) with the Korean version (RBDQ-KR) and to investigate its clinical usefulness. METHODS: One-hundred five patients with RBD and 105 age- and sex-matched controls were enrolled. Thirty were randomly selected for a retest with the questionnaire after 2 to 4 weeks without any treatment...
December 15, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/29114733/sodium-oxybate-for-excessive-daytime-sleepiness-and-sleep-disturbance-in-parkinson-disease-a-randomized-clinical-trial
#18
Fabian Büchele, Marc Hackius, Sebastian R Schreglmann, Wolfgang Omlor, Esther Werth, Angelina Maric, Lukas L Imbach, Stefan Hägele-Link, Daniel Waldvogel, Christian R Baumann
Importance: Sleep-wake disorders are a common and debilitating nonmotor manifestation of Parkinson disease (PD), but treatment options are scarce. Objective: To determine whether nocturnal administration of sodium oxybate, a first-line treatment in narcolepsy, is effective and safe for excessive daytime sleepiness (EDS) and disturbed nighttime sleep in patients with PD. Design, Setting, and Participants: Randomized, double-blind, placebo-controlled, crossover phase 2a study carried out between January 9, 2015, and February 24, 2017...
November 6, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/29102236/rem-sleep-behavior-disorder-portends-poor-prognosis-in-parkinson-s-disease-a-systematic-review
#19
REVIEW
Yoon Kim, Young Eun Kim, Eun Ok Park, Chae Won Shin, Han-Joon Kim, Beomseok Jeon
REM sleep behavior disorder (RBD) is a parasomnia wherein a loss of REM sleep atonia manifests as dream-enactment, often violent. Aside from its significance as a predictor of PD, RBD in PD may imply more than merely screaming at night and experiencing sleep fragmentation. To probe its significance as a prognostic factor in PD, we performed a systematic literature review. Analysis of prospective studies reveals baseline RBD confers a higher risk of developing dementia and hallucinations. In cross-sectional studies, RBD is associated with the non-tremor predominant motor phenotype and autonomic dysfunction...
October 25, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29073634/demographic-clinical-and-polysomnographic-characteristics-of-childhood-and-adult-onset-sleepwalking-in-adults
#20
Panagiotis Bargiotas, Iris Arnet, Michael Frei, Christian R Baumann, Kaspar Schindler, Claudio L Bassetti
BACKGROUND: Sleepwalking (SW) is found to affect children predominantly, but it can persist or appear de novo even among adults. In this study, we assessed the demographic, clinical and polysomnographic profile, trigger factors and associated comorbidities of adult-onset (AO-SW) and childhood-onset (CO-SW) adult sleepwalkers. METHODS: In adult sleepwalkers, a structured clinical interview, a battery of questionnaires, video-polysomnography (v-PSG) and standard electroencephalography (EEG) were performed...
October 26, 2017: European Neurology
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