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Sleep paralysis

Alexis Roman, Soraya Meftah, Sébastien Arthaud, Pierre-Hervé Luppi, Christelle Peyron
Narcolepsy type 1 is a disabling disorder with four primary symptoms: excessive-daytime-sleepiness, cataplexy, hypnagogic hallucinations and sleep paralysis. The three latter symptoms together with a short REM sleep latency have suggested impairment in REM sleep homeostatic regulation with an enhanced propensity for (i.e. tendency to enter) REM sleep. To test this hypothesis, we challenged REM sleep homeostatic regulation in a recognized model of narcolepsy, the orexin knock-out (Orex-KO) mice and their wild-type (WT) littermates...
March 7, 2018: Sleep
Monica Moresco, Fabio Pizza, Elena Antelmi, Giuseppe Plazzi
Narcolepsy type 1 (NT1) is a rare chronic neurologic disorder characterized by excessive daytime sleepiness, cataplexy, sleep paralysis, hallucinations and disrupted nocturnal sleep, usually with onset during childhood/adolescence. Pediatric NT1 is associated with limitations on children's activities and achievements, especially poor performance at school, difficulty with peers due to disease symptoms and comorbidities including depression, obesity, and precocious puberty. NT1 disease is caused by the selective loss of hypocretin-producing neurons in the lateral hypothalamus, most probably related to an autoimmune pathophysiology...
March 5, 2018: Current Drug Metabolism
Susanne Worrack, Orlando Guntinas-Lichius, Gerd Fabian Volk, Magdalena C Kaczmarek, Julia Mühleck, Katja Brenk-Franz, Bernhard M Strauß, Uwe Altmann
BACKGROUND: Facial palsy (FP) is a paralysis of facial muscles and one of the most common motor failures. It is associated with intense impairment of health related quality of life and depressive symptoms. Sleep disorders as a result of FP are often attributed to illness-related impairments, although psychosocial problems might also be the cause. This study examined the direct and indirect effects of FP on sleep quality. METHODS: The sample of this cross-sectional study included N = 81 patients with FP...
March 1, 2018: Laryngo- Rhino- Otologie
Rebecca F D'Cruz, Patrick B Murphy, Georgios Kaltsakas
Motor neurone disease (MND) is a neurodegenerative disease defined by axonal loss and gliosis of upper and lower motor neurones in the motor cortex, lower brainstem nuclei and ventral horn of the spinal cord. MND is currently incurable and has a poor prognosis, with death typically occurring 3 to 5 years after disease onset. The disease is characterised by rapidly progressive weakness leading to paralysis, fasciculations, bulbar symptoms (including dysarthria and dysphagia) and respiratory compromise. Respiratory complications arise as a result of weakness of upper airway (pharyngeal and laryngeal) muscles and respiratory muscles (diaphragm, intercostal and accessory muscles) leading to respiratory failure...
January 2018: Journal of Thoracic Disease
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
Alejandro Jiménez-Genchi, Jorge Caraveo-Anduaga
OBJECTIVE: To estimate the crude prevalence rates of several sleep complaints and the prevalence for each one adjusted for the coexistence of symptoms in other sleep domains in a representative sample of adult individuals from Mexico City. METHODS: A probabilistic sample of 1933 adult individuals living in Mexico City was surveyed using fourteen questions of the Sleep Disorders Questionnaire to assess sleep-related symptoms and sleep complaints. Estimates of crude prevalence rates for each sleep disturbance and adjusted for a score ≥ the 80th...
July 2017: Sleep Science
M Okuyama, S Kato, S Sato, J Okazaki, Y Kitamura, T Ishikawa, Y Sato, S Isono
BACKGROUND: Difficult mask ventilation is common and is known to be associated with sleep-disordered breathing (SDB). It is our hypothesis that the incidence of expiratory retropalatal (RP) airway closure (primary outcome) during nasal positive pressure ventilation (PPV) is more frequent in patients with SDB (apnea hypopnea index ≥5 h-1) than non-SDB subjects. METHODS: The severity of SDB was assessed before surgery using a portable sleep monitor. In anaesthetized and paralysed patients with (n=11) and without SDB (n=9), we observed the behaviour of the RP airway endoscopically during nasal PPV with the mouth closed and determined the dynamic RP closing pressure, which was defined as the highest airway pressure above which the RP airway closure was reversed...
January 2018: British Journal of Anaesthesia
Dan Denis, Christopher C French, Melanie N Schneider, Alice M Gregory
Research suggests that poor sleep quality is related to the occurrence of sleep paralysis, although the precise relationship between these two variables is unknown. This association has generated interest due to the related possibility that improving sleep quality could help to combat episodes of sleep paralysis. To date, studies examining the association between sleep quality and sleep paralysis have typically measured sleep quality using general measures such as the global score of the Pittsburgh Sleep Quality Index (PSQI)...
December 27, 2017: Journal of Sleep Research
Osbourne Quaye, Precious Cramer, Mark Ofosuhene, Laud K N Okine, Alexander K Nyarko
Extracts of Desmodium adscendens (Sw) DC are used for the treatment of various diseases but limited toxicological evaluations have been done on the medicinal plant. This study investigates toxicity effects of the leave extract of D adscendens, and the possibility of drug-drug interaction of the plant extract when co-administered with other drugs. Oral administrations of leaf extract of D adscendens to white Wistar rats in an acute toxicity studies allowed the estimation of an LD50 (median lethal dose) value of 1122 mg/kg body weight...
October 2017: Journal of Evidence-based Complementary & Alternative Medicine
Marc L Molendijk, Harriët Montagne, Ouarda Bouachmir, Zeynep Alper, Jan-Pieter Bervoets, Jan Dirk Blom
Background: The incubus phenomenon is a paroxysmal sleep-related disorder characterized by compound hallucinations experienced during brief phases of (apparent) wakefulness. The condition has an almost stereotypical presentation, characterized by a hallucinated being that exerts pressure on the thorax, meanwhile carrying out aggressive and/or sexual acts. It tends to be accompanied by sleep paralysis, anxiety, vegetative symptoms, and feelings of suffocation. Its prevalence rate is unknown since, in prior analyses, cases of recurrent isolated sleep paralysis with/without an incubus phenomenon have been pooled together...
2017: Frontiers in Psychiatry
Thomas Rossor, Ming Lim, Kirandeep VanDenEshof, Paul Gringras
Type 1 narcolepsy (NT1) is a chronic primary disorder of hypersomnolence characterized by excessive daytime sleepiness, cataplexy, sleep paralysis, hypnagogic hallucinations and disrupted nocturnal sleep. NT1 is linked to hypothalamic hypocretin deficiency, strongly associated with Human Leukocyte Antigen (HLA) marker DQB1*06:02 and of probable autoimmune origin. NT1 is usually associated with increased rates of overweight and obesity, and sometimes with increases in overnight blood pressure and increased rates of hypoventilation with raised CO2 levels overnight...
January 2018: European Journal of Paediatric Neurology: EJPN
Demeke Geremew, Ania Rahimi-Golkhandan, Khosro Sadeghniiat-Haghighi, Yadollah Shakiba, Ahmad Khajeh-Mehrizi, Bita Ansaripour, Maryam Izad
Narcolepsy is a rare, disabling disorder characterized by excessive daytime sleepiness, cataplexy, hypnagogic hallucinations and sleep paralysis. Several studies demonstrated its association with HLA-DQB1*0602 in various ethnic groups. Our study aimed to determine the prevalence of HLA-DQB1*0602 allele in Iranian patients with narcolepsy and assess its predictive parameters for diagnosing narcolepsy. In addition, car accidents and job problems were assessed among narcoleptic patients. We studied 44 narcoleptic patients, 30 patients with other types of excessive daytime sleepiness (EDS)  and 50 healthy age and sex matched individuals in this case-control study...
October 2017: Iranian Journal of Allergy, Asthma, and Immunology
Hou-Zhen Tuo, Ze-Long Tian, Yi-Nong Cui, Xiao-Yang Ma, Chun-Ling Xu, Hong-Yan Bi, Li-Yan Zhang, Yong-Bo Zhang, Wei-Dong Le, William Ondo
OBJECTIVE: Pontine infarction is a common type of stroke in the cerebral deep structures, resulting from occlusion of small penetrating arteries, may manifest as hemi-paralysis, hemi-sensory deficit, ataxia, vertigo, and bulbar dysfunction, but patients presenting with restless legs syndrome (RLS) are extremely rare. Herein, we reported five cases with RLS as a major manifestation of pontine infarction. METHODS: Five cases of pontine infarction related RLS were collected from July 2013 to February 2016...
September 2017: Chronic Diseases and Translational Medicine
Mikiko Tokiya, Yoshitaka Kaneita, Osamu Itani, Maki Jike, Takashi Ohida
OBJECTIVE: The objective of this study was to clarify the incidence rate and predictive factors of insomnia in Japanese junior and senior high school students. METHODS: We conducted a baseline survey on first year junior and senior high school students (seventh and 10th graders) throughout the nation. A follow-up survey was then conducted two years later. For both surveys, we used self-administered questionnaires inquiring about sleep, mental health status, lifestyle, participation in club activities, and study hours...
October 2017: Sleep Medicine
Nicholas A Keks, Judy Hope, Simone Keogh
OBJECTIVE: Suvorexant, a new hypnotic, is indicated for the treatment of insomnia characterized by difficulties with sleep onset and/or sleep maintenance, and is used long-term. This paper will briefly review suvorexant. RESULTS: Orexin is a hypothalamic peptide which promotes wakefulness. By blocking orexin receptors, suvorexant induces sleep. Peaking 2 h after ingestion, it has a half-life of 12 h and is hepatically metabolized mainly by CYP3A. Kinetics are not affected by age but concentrations are higher in females and obese patients...
December 2017: Australasian Psychiatry: Bulletin of Royal Australian and New Zealand College of Psychiatrists
Vijayabharathi Ekambaram, Kiran Maski
Parasomnia is a common pediatric sleep disorder that can cause parents or caregivers distress when experienced by their children. Based on the International Classification of Sleep Disorders, parasomnias can be divided into two subgroups: non-rapid eye movement (NREM) parasomnias and rapid eye movement (REM) parasomnias. REM sleep parasomnias include nightmares, REM behavior disorder, and sleep paralysis, whereas NREM sleep parasomnias include disorders of arousal such as confusional arousals, sleepwalking, sleep talking, night terrors, and sleep-related eating disorder...
September 1, 2017: Pediatric Annals
Sara Pedrosa, Nuno Lareiro, Pedro Amorim
INTRODUCTION: Narcoleptic patients may be at increased risk of prolonged emergence, postoperative hypersomnia, apneic episodes, and sleep paralysis after general anesthesia. Modafinil is the first-line treatment, however, the implication it has on general anesthesia is not clear. This report present 2 cases of narcoleptic patients medicated with modafinil that were submitted to total intravenous anesthesia for neurosurgical procedures. CASE PRESENTATION: Informed consent was obtained from both patients...
June 2017: Anesthesiology and Pain Medicine
Birgit Högl, Alex Iranzo
PURPOSE OF REVIEW: The most common rapid eye movement (REM) parasomnia encountered by neurologists is REM sleep behavior disorder (RBD), and nightmares are so frequent that every neurologist should be able to differentiate them from the dream enactment of RBD. Isolated sleep paralysis is relatively common and is often mistaken for other neurologic disorders. This article summarizes the current state of the art in the diagnosis of RBD, discusses the role of specific questionnaires and polysomnography in the diagnosis of RBD, and reviews recent studies on idiopathic RBD as an early feature of a synucleinopathy, secondary RBD, and its management...
August 2017: Continuum: Lifelong Learning in Neurology
Dan Denis, Christopher C French, Alice M Gregory
Sleep paralysis is a relatively common but under-researched phenomenon. While the causes are unknown, a number of studies have investigated potential risk factors. In this article, we conducted a systematic review on the available literature regarding variables associated with both the frequency and intensity of sleep paralysis episodes. A total of 42 studies met the inclusion criteria. For each study, sample size, study site, sex and age of participants, sleep paralysis measure, and results of analyses looking at the relationship(s) between sleep paralysis and associated variable(s) were extracted...
June 8, 2017: Sleep Medicine Reviews
Stefano de Biase, Annacarmen Nilo, Gian Luigi Gigli, Mariarosaria Valente
Narcolepsy is a chronic sleep disorder characterized by a pentad of excessive daytime sleepiness (EDS), cataplexy, sleep paralysis, hypnagogic/hypnopompic hallucinations, and disturbed nocturnal sleep. While non-pharmacological treatments are sometimes helpful, more than 90% of narcoleptic patients require a pharmacological treatment. Areas covered: The present review is based on an extensive Internet and PubMed search from 1994 to 2017. It is focused on drugs currently in development for the treatment of narcolepsy...
August 2017: Expert Opinion on Investigational Drugs
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