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Narcolepsy

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https://www.readbyqxmd.com/read/29668817/adverse-events-of-vaccines-and-the-consequences-of-non-vaccination-a-critical-review
#1
Luana Raposo de Melo Moraes Aps, Marco Aurélio Floriano Piantola, Sara Araujo Pereira, Julia Tavares de Castro, Fernanda Ayane de Oliveira Santos, Luís Carlos de Souza Ferreira
OBJECTIVE: To analyze the risks related to vaccines and the impacts of non-vaccination on the world population. METHODS: This is a narrative review that has considered information present in the bibliographic databases NCBI-PubMed, Medline, Lilacs, and Scientific Electronic Library Online (SciELO), between November 2015 and November 2016. For the analysis of outbreaks caused by non-vaccination, we considered the work published between 2010 and 2016. RESULTS: We have described the main components of the vaccines offered by the Brazilian public health system and the adverse events associated with these elements...
2018: Revista de Saúde Pública
https://www.readbyqxmd.com/read/29659394/a-bizarre-bone-scan-of-fibrodysplasia-ossificans-progressiva
#2
Tzyy-Ling Chuang, Kuo-Wei Ho, Yuh-Feng Wang
A 27-year-old woman had progressive bony ankylosis over both hands since she was 5 years old. Bony ankylosing over the peripheral joints and spine slowly progressed, and scoliosis surgery was performed at age 14. Recently, she developed difficulty walking, changing position, and opening her mouth. A neurologist was consulted and ruled out the suspicion of narcolepsy. Chest CT showed ankylosing spondylitis. A bone scan showed a bizarre pattern with radiouptake to the left maxilla, bilateral sacroiliac joints, left middle third femur, and soft tissue uptake over bilateral arms, legs, and pelvis...
April 13, 2018: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29649498/the-wakefulness-promoting-drug-modafinil-causes-adenosine-receptor-mediated-upregulation-of-receptor-activator-of-nuclear-factor-%C3%AE%C2%BAb-ligand-in-osteoblasts-negative-impact-of-the-drug-on-peak-bone-accrual-in-rats
#3
Shyamsundar Pal China, Subhashis Pal, Sourav Chattopadhyay, Konica Porwal, Monika Mittal, Sabyasachi Sanyal, Naibedya Chattopadhyay
Modafinil is primarily prescribed for treatment of narcolepsy and other sleep-associated disorders. However, its off-prescription use as a cognition enhancer increased considerably, specially among youths. Given its increasing use in young adults the effect of modafinil on peak bone accrual is an important issue but has never been investigated. Modafinil treatment to young male rats caused trabecular and cortical bone loss in tibia and femur, and reduction in biomechanical strength. Co-treatment of modafinil with alendronate (a drug that suppresses bone resorption) reversed the trabecular bone loss but failed to prevent cortical loss...
April 9, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29624767/systemic-exertion-intolerance-disease-chronic-fatigue-syndrome-is-common-in-sleep-centre-patients-with-hypersomnolence-a-retrospective-pilot-study
#4
Caroline Maness, Prabhjyot Saini, Donald L Bliwise, Victoria Olvera, David B Rye, Lynn M Trotti
Symptoms of the central disorders of hypersomnolence extend beyond excessive daytime sleepiness to include non-restorative sleep, fatigue and cognitive dysfunction. They share much in common with myalgic encephalomyelitis/chronic fatigue syndrome, recently renamed systemic exertion intolerance disease, whose additional features include post-exertional malaise and orthostatic intolerance. We sought to determine the frequency and correlates of systemic exertion intolerance disease in a hypersomnolent population...
April 6, 2018: Journal of Sleep Research
https://www.readbyqxmd.com/read/29623725/an-overview-of-hypocretin-based-therapy-in-narcolepsy
#5
Shinichi Takenoshita, Noriaki Sakai, Yuhei Chiba, Mari Matsumura, Mai Yamaguchi, Seiji Nishino
Narcolepsy with cataplexy is most commonly caused by a loss of hypocretin/orexin peptide-producing neurons in the hypothalamus (i.e., Narcolepsy Type 1). Since hypocretin deficiency is assumed to be the main cause of narcoleptic symptoms, hypocretin replacement will be the most essential treatment for narcolepsy. Unfortunately, this option is still not available clinically. There are many potential approaches to replace hypocretin in the brain for narcolepsy such as intranasal administration of hypocretin peptides, developing small molecule hypocretin receptor agonists, hypocretin neuronal transplantation, transforming hypocretin stem cells into hypothalamic neurons, and hypocretin gene therapy...
April 6, 2018: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/29622485/the-association-of-schizophrenia-and-narcolepsy-in-adolescents
#6
Yefim Cavalier, Sanjeev V Kothare
No abstract text is available yet for this article.
January 31, 2018: Pediatric Neurology
https://www.readbyqxmd.com/read/29616151/narcolepsy-in-adolescence-a-missed-diagnosis-a-case-report
#7
Anoop K Gupta, Swapnajeet Sahoo, Sandeep Grover
<b/> Narcolepsy is an uncommon sleep cycle disorder with a usual onset in adolescence, but it is often misdiagnosed and underdiagnosed. Rarely is the tetrad of excessive daytime sleepiness, cataplexy, hypnagogic hallucinations, and sleep paralysis seen in patients. The clinical characteristics of narcolepsy are often confused with many psychiatric and neurologic disorders. Lack of clinical awareness about narcolepsy leads to frequent prescriptions of antiepileptics and psychotropics, which can adversely affect the quality of life of children and adolescents...
July 2017: Innovations in Clinical Neuroscience
https://www.readbyqxmd.com/read/29615884/central-disorders-of-hypersomnolence-restless-legs-syndrome-and-surgery-with-general-anesthesia-patient-perceptions
#8
Vincent LaBarbera, Paul S García, Donald L Bliwise, Lynn M Trotti
Introduction: The importance of obstructive sleep apnea in patients undergoing surgery with general anesthesia is well-defined, but the surgical and anesthetic implications of other sleep disorders are less clear. We sought to evaluate response to surgery with general anesthesia in patients with central disorders of hypersomnolence or restless legs syndrome. Methods: We surveyed patients on their most recent surgical procedure with general anesthesia, querying about procedure, recovery, and any changes in sleep disorder symptomatology following the procedure...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29609710/associations-between-neuropsychological-neurobehavioral-and-emotional-functioning-and-either-narcolepsy-or-idiopathic-hypersomnia-in-children-and-adolescents
#9
Beris Ludwig, Simon Smith, Helen Heussler
STUDY OBJECTIVES: Narcolepsy and idiopathic hypersomnia are chronic neurological sleep disorders characterized by hypersomnolence or excessive daytime sleepiness. This review aims to systematically examine the scientific literature on the associations between narcolepsy and idiopathic hypersomnia and their effect on intellectual functioning, academic achievement, behavior, and emotion. METHODS: Published studies that examined those associations in children and adolescents were included...
March 30, 2018: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/29602910/neurocognition-sleep-and-pet-findings-in-type-2-vs-type-1-narcolepsy
#10
Yu-Shu Huang, Ing-Tsung Hsiao, Feng-Yuan Liu, Fang-Ming Hwang, Kuang-Lin Lin, Wen-Cheng Huang, Christian Guilleminault
OBJECTIVE: To analyze differences in functional brain images collected in patients with type 2 and type 1 narcolepsy compared to normal controls and the relationship among brain images, objective Neuropsychologic tests, and sleep findings. METHODS: Data collection included comprehensive clinical investigation, study of sleep/wake with actigraphy, polysomnography, Multiple Sleep Latency Test, human leukocyte antigen typing,18 F-fluorodeoxyglucose PET, and cognitive tests obtained from 29 patients with type 2 narcolepsy, 104 patients with type 1 narcolepsy, and 26 sex- and age-matched normal control individuals...
March 30, 2018: Neurology
https://www.readbyqxmd.com/read/29580887/neuroimaging-correlates-of-narcolepsy-with-cataplexy-a-systematic-review
#11
REVIEW
Masataka Wada, Masaru Mimura, Yoshihiro Noda, Shotaro Takasu, Eric Plitman, Makoto Honda, Akiyo Natsubori, Kamiyu Ogyu, Ryosuke Tarumi, Ariel Graff-Guerrero, Shinichiro Nakajima
Recent developments in neuroimaging techniques have advanced our understanding of biological mechanisms underpinning narcolepsy. We used MEDLINE to retrieve neuroimaging studies to compare patients with narcolepsy and healthy controls. Thirty-seven studies were identified and demonstrated several replicated abnormalities: (1) gray matter reductions in superior frontal, superior and inferior temporal, and middle occipital gyri, hypothalamus, amygdala, insula, hippocampus, cingulate cortex, thalamus, and nucleus accumbens, (2) decreased fractional anisotropy in white matter of fronto-orbital and cingulate area, (3) reduced brain metabolism or cerebral blood flow in middle and superior frontal, and cingulate cortex (4) increased activity in inferior frontal gyri, insula, amygdala, and nucleus accumbens, and (5) N-acetylaspartate/creatine-phosphocreatine level reduction in hypothalamus...
March 23, 2018: Neuroscience Research
https://www.readbyqxmd.com/read/29572132/sleep-biology-updates-hemodynamic-and-autonomic-control-in-sleep-disorders
#12
REVIEW
Renaud Tamisier, J Woodrow Weiss, Jean Louis Pépin
Sleep disorders like obstructive sleep apnea syndrome, periodic limb movements in sleep syndrome, insomnia and narcolepsy-cataplexy are all associated with an increased risk of cardiovascular diseases. These disorders share an impaired autonomic nervous system regulation that leads to increased cardiovascular sympathetic tone. This increased cardiovascular sympathetic tone is, in turn, likely to play a major role in the increased risk of cardiovascular disease. Different stimuli, such as intermittent hypoxia, sleep fragmentation, decrease in sleep duration, increased respiratory effort, and transient hypercapnia may all initiate the pathophysiological cascade leading to sympathetic overactivity and some or all of these are encountered in these different sleep disorders...
March 20, 2018: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29571720/prenatal-exposure-to-modafinil-alters-behavioural-response-to-methamphetamine-in-adult-male-mice
#13
Jana Ruda-Kucerova, Jana Pistovcakova, Petra Amchova, Alexandra Sulcova, Alena Machalova
Modafinil is a psychostimulant drug prescribed for treatment of narcolepsy. However, it is used as a "smart drug" especially by young adults to increase wakefulness, concentration and mental performance. Therefore, it can also be used by women with childbearing potential and its developmental effects can become a concern. The aim of this study was to assess behavioural and immune effects of prenatal modafinil exposure in mice and to evaluate the reaction to methamphetamine exposure on these animals in adult age...
March 20, 2018: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/29542425/progenitor-cell-proliferation-in-the-subventricular-zone-in-a-model-of-narcolepsy
#14
Oscar Arias-Carrion, Emmanuel Ortega-Robles, Benito de Celis-Alonso, Artur Palasz, Eric Murillo-Rodriguez, Miguel A Mendez-Rojas, Jose Salas-Pacheco, Elias Manjarrez
Adult neurogenesis, a specific form of brain plasticity in mammals occurring in the subventricular zone, is subject to complex regulations. Hypocretin/orexin neurons are implicated in the regulation of sleep and arousal states among other functions. Here, we found orexin afferent projections in the rat subventricular zone, which is a neurogenic region. We therefore studied in detail the origin of the orexinergic innervation to the subventricular zone in rats. Post-mortem retrograde tracing combined with immunofluorescence procedures indicate orexinergic projections toward the subventricular zone...
March 13, 2018: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/29530376/a-comparative-study-of-methods-for-automatic-detection-of-rapid-eye-movement-abnormal-muscular-activity-in-narcolepsy
#15
Alexander Neergaard Olesen, Matteo Cesari, Julie Anja Engelhard Christensen, Helge Bjarup Dissing Sorensen, Emmanuel Mignot, Poul Jennum
OBJECTIVE: To evaluate rapid eye movement (REM) muscular activity in narcolepsy by applying five algorithms to electromyogram (EMG) recordings, and to investigate its value for narcolepsy diagnosis. PATIENTS/METHODS: A modified version of phasic EMG metric (mPEM), muscle activity index (MAI), REM atonia index (RAI), supra-threshold REM EMG activity metric (STREAM), and Frandsen method (FR) were calculated from polysomnography recordings of 20 healthy controls, 18 clinic controls (subjects suspected with narcolepsy but finally diagnosed without any sleep abnormality), 16 narcolepsy type one without REM sleep behavior disorder (RBD), nine narcolepsy type one with RBD, and 18 narcolepsy type two...
April 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29530370/flow-cytometry-analysis-of-t-cell-subsets-in-cerebrospinal-fluid-of-narcolepsy-type-1-patients-with-long-lasting-disease
#16
Monica Moresco, Mariangela Lecciso, Darina Ocadlikova, Marco Filardi, Silvia Melzi, Birgitte Rahbek Kornum, Elena Antelmi, Fabio Pizza, Emmanuel Mignot, Antonio Curti, Giuseppe Plazzi
BACKGROUND: Type 1 narcolepsy (NT1) is a central hypersomnia linked to the destruction of hypocretin-producing neurons. A great body of genetic and epidemiological data points to likely autoimmune disease aetiology. Recent reports have characterized peripheral blood T-cell subsets in NT1, whereas data regarding the cerebrospinal fluid (CSF) immune cell composition are lacking. The current study aimed to characterize the T-cell and natural killer (NK) cell subsets in NT1 patients with long disease course...
April 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29522212/the-inappropriate-occurrence-of-rem-sleep-in-narcolepsy-is-not-due-to-a-defect-in-homeostatic-regulation-of-rem-sleep
#17
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
https://www.readbyqxmd.com/read/29522206/in-field-assessment-of-sodium-oxybate-effect-in-pediatric-type-1-narcolepsy-an-actigraphic-study
#18
Marco Filardi, Fabio Pizza, Elena Antelmi, Raffaele Ferri, Vincenzo Natale, Giuseppe Plazzi
Study Objectives: Sodium oxybate (SXB) is a GABAergic agent widely used as off-label treatment in pediatric type 1 narcolepsy (NT1). Here we aimed at analyzing by wrist actigraphy the sleep/wake profile of NT1 children and adolescents in drug-naïve condition and after 1 year of SXB treatment. As secondary aim, we investigated changes on sleepiness, cataplexy and children's anthropometric profile after 1 year of SXB treatment. Methods: Twenty-four drug-naïve NT1 children underwent seven days of actigraphy during the school week...
March 7, 2018: Sleep
https://www.readbyqxmd.com/read/29512449/sodium-oxybate-treatment-in-pediatric-type-1-narcolepsy
#19
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
https://www.readbyqxmd.com/read/29512177/patterns-and-profiles-of-methylphenidate-use-in-both-children-and-adults
#20
V Pauly, E Frauger, M Lepelley, M Mallaret, Q Boucherie, J Micallef
AIM: The aim was to characterize patterns of Methylphenidate (MPH) use in France in both children and adults over a three year period. METHODS: Using the French General Health Insurance database limited to two areas covering approximately 4 million individuals, we made up a cohort of incident MPH users between July 2010 and June 2013. Splitting them into distinct age groups ( [18-24]; [25;49]; >=50 years olds for adults and less than 6 years old, [6-11] and [12;17] for children), we described these populations at MPH initiation and during follow-up according to duration of treatment, quantities dispensed, and co-prescription with Central Nervous System (CNS) drugs...
March 7, 2018: British Journal of Clinical Pharmacology
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