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https://www.readbyqxmd.com/read/29332107/the-sleep-architecture-of-saudi-arabian-patients-with-kleine-levin-syndrome
#1
Saad M Al Shareef, Aljohara S Almeneessier, Omeima Hammad, Richard M Smith, Ahmed S BaHammam
To establish baseline sleep architecture during an acute attack of Kleine-Levin syndrome (KLS) in a cohort of Saudi Arabian KLS patients and compare these characteristics with other published cohorts. Methods: This was a retrospective cohort study of the polysomnographic characteristics of 10 typical symptomatic Saudi Arabian KLS patients attending the University Sleep Disorders Center, King Saud University, Riyadh, Saudi Arabia between 2002 and 2015. Data were captured by nocturnal polysomnography during an acute attack of hypersomnia and compared with other published cohorts identified via a systematic literature search...
January 2018: Saudi Medical Journal
https://www.readbyqxmd.com/read/29331872/effect-of-physical-activity-on-cognitive-flexibility-depression-and-rbd-in-healthy-elderly
#2
Stefanie Lerche, Alexandra Gutfreund, Kathrin Brockmann, Markus A Hobert, Isabel Wurster, Ulrike Sünkel, Gerhard W Eschweiler, Florian G Metzger, Walter Maetzler, Daniela Berg
OBJECTIVE: The prevalence of Alzheimer's disease and Parkinson's disease increases with the raising number of elderly, which will be a challenging situation for the healthcare systems and society in the future. There is evidence that there are modifiable risk-factors e.g. physical activity for these diseases. Here, we study the interaction between sports inactivity with prodromal markers for neurodegeneration. PATIENTS AND METHODS: We investigated 667 neurologically healthy individuals cross-sectional and a subgroup longitudinal over six years...
January 9, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29326058/sleep-architecture-is-altered-in-the-reserpine-induced-fibromyalgia-model-in-ovariectomized-rats
#3
Alberto Hernandez-Leon, Alonso Fernández-Guasti, Adrián Martínez, Francisco Pellicer, María Eva González-Trujano
Fibromyalgia (FM) is a musculoskeletal chronic pain syndrome with various concomitant symptoms like sleep disorders. FM patients are mainly women and menopause might play an important role in the altered processing of somatosensory information. Adverse effects and moderated efficacy of drugs promote treatment discontinuation by patients. Animal models of FM report pain and depression-like behaviors, but none of them have explored sleep disturbance as possible marker in the preclinic diagnostic. The aim of this study was to investigate alterations of the sleep architecture in the reserpine (RES)-induced FM model in ovarectomized (OVX) rats...
January 8, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29325332/-gender-differences-of-rem-related-obstructive-sleep-apnea-hypopnea-syndrome
#4
M Xie, R Ren, J M He, X F Xue, T M Li, L Tan, F Lei, X D Tang, L H Yang
Objective: To explore the gender differences of rapid-eye-movement (REM) related obstructive sleep apnea-hypopnea syndrome (OSAHS). Methods: Consecutive patients with primary complaint of snoring from Sleep Medicine Center of West China Hospital between January 2016 and November 2016 were included in the study. All participants underwent one night polysomnography (PSG) and Epworth sleep scale (ESS) was estimated. The patients diagnosed with OSAHS were classified as REM related OSAHS (REM-OSAHS group) and non-rapid-eye-movement (NREM) related OSAHS (NREM-OSAHS group) based on the PSG parameters...
December 26, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29321233/effect-of-psychostimulants-on-blood-pressure-profile-and-endothelial-function-in-narcolepsy
#5
Adriana Bosco, Régis Lopez, Lucie Barateau, Sofiene Chenini, Carole Pesenti, Jean-Louis Pépin, Isabelle Jaussent, Yves Dauvilliers
OBJECTIVE: To assess the effect of psychostimulant treatments on the 24-hour blood pressure (BP) profile of patients with narcolepsy type 1 (NT1). METHODS: Heart rate (HR) and BP were monitored for 24 hours and morning endothelial function was evaluated in 160 consecutive patients with NT1: 68 untreated (41 male, median age 34.9 years), 54 treated (32 male, median age 40.9 years), and 38 evaluated twice (21 male, median age 32 years), before and during treatment...
January 10, 2018: Neurology
https://www.readbyqxmd.com/read/29313153/first-symptoms-in-multiple-system-atrophy
#6
Jake H McKay, William P Cheshire
PURPOSE: The initial symptoms of multiple system atrophy (MSA) and, in particular, early autonomic symptoms, have received less attention than motor symptoms. Whereas pathognomonic motor signs are essential to diagnostic specificity, early symptoms important to recognition of a neurodegenerative disorder may be less apparent or diagnostically ambiguous. This observational study sought to identify the very earliest symptoms in the natural history of MSA. METHODS: Detailed clinical histories focusing on early symptoms were obtained from 30 subjects recently diagnosed with MSA...
January 8, 2018: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/29311142/regulation-of-lateral-hypothalamic-orexin-activity-by-local-gabaergic-neurons
#7
Loris L Ferrari, Daniel Park, Lin Zhu, Matthew R Palmer, Rebecca Y Broadhurst, Elda Arrigoni
Orexin (also known as hypocretin) neurons are considered a key component of the ascending arousal system. They are active during wakefulness, at which time they drive and maintain arousal, and are silent during sleep. Their activity is controlled by long-range inputs from many sources, as well as by more short-range inputs, including from presumptive GABAergic neurons in the lateral hypothalamus/perifornical region (LH/PF). To characterize local GABAergic input to orexin neurons we employed channelrhodopsin-2 (ChR2)-assisted-circuit-mapping in brain slices...
January 8, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29306906/-psychiatric-disorders-in-epilepsy-clinical-phenomena
#8
Anna Szucs, Andras Horvath, Daniel Fabo, Geza Szabo, Andrea Kovacs, Peter Halasz
The frequent psychiatric comorbidity in epilepsy compromises the quality of life of those affected, further increasing their suicide risk and the high burden of stigmatisation. Out of adulthood epilepsies, mesio-temporal lobe epilepsy carries the highest cognitive and psychiatric risk, making mental health comorbidities its inherent features. The pathomechanism of the epilepsy-related mental health symptoms and conditions appears to be related to undetected subclinical seizures, postictal exhaustion and inhibition, and the non-REM sleep related interictal epileptic activity...
September 2017: Neuropsychopharmacologia Hungarica
https://www.readbyqxmd.com/read/29306708/the-influence-of-rem-sleep-and-sws-on-emotional-memory-consolidation-in-participants-reporting-depressive-symptoms
#9
Marcus O Harrington, Jennifer M Johnson, Harriet E Croom, Kyla Pennington, Simon J Durrant
Negative emotional memory bias is thought to play a causal role in the onset and maintenance of major depressive disorder. Rapid Eye Movement (REM) sleep has been shown to selectively consolidate negative emotional memories in healthy participants, and is greater in quantity and density in depressed patients. Slow-Wave Sleep (SWS) is typically associated with the consolidation of non-emotional memories. However, the effects of REM sleep and SWS on emotional memory consolidation have not been investigated in participants reporting depressive symptoms...
December 15, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29304108/a-four-state-markov-model-of-sleep-wakefulness-dynamics-along-light-dark-cycle-in-mice
#10
Leonel Perez-Atencio, Nicolas Garcia-Aracil, Eduardo Fernandez, Luis C Barrio, Juan A Barios
Behavioral states alternate between wakefulness (wk), rapid eye movement (rem) and non-rem (nrem) sleep at time scale of hours i.e., light and dark cycle rhythms and from several tens of minutes to seconds (i.e., brief awakenings during sleep). Using statistical analysis of bout duration, Markov chains of sleep-wk dynamics and quantitative EEG analysis, we evaluated the influence of light/dark (ld) changes on brain function along the sleep-wk cycle. Bout duration (bd) histograms and Kaplan-Meier (km) survival curves of wk showed a bimodal statistical distribution, suggesting that two types of wk do exist: brief-wk (wkb) and long-wk (wkl)...
2018: PloS One
https://www.readbyqxmd.com/read/29302615/homeostatic-changes-in-gaba-and-acetylcholine-muscarinic-receptors-on-gabaergic-neurons-in-the-mesencephalic-reticular-formation-following-sleep-deprivation
#11
Hanieh Toossi, Esther Del Cid-Pellitero, Barbara E Jones
We have examined whether GABAergic neurons in the mesencephalic reticular formation (RFMes), which are believed to inhibit the neurons in the pons that generate paradoxical sleep (PS or REMS), are submitted to homeostatic regulation under conditions of sleep deprivation (SD) by enforced waking during the day in mice. Using immunofluorescence, we investigated first, by staining for c-Fos, whether GABAergic RFMes neurons are active during SD and then, by staining for receptors, whether their activity is associated with homeostatic changes in GABAA or acetylcholine muscarinic type 2 (AChM2) receptors (Rs), which evoke inhibition...
November 2017: ENeuro
https://www.readbyqxmd.com/read/29299518/an-updated-review-of-pediatric-drug-induced-sleep-endoscopy
#12
REVIEW
Lyndy J Wilcox, Mathieu Bergeron, Saranya Reghunathan, Stacey L Ishman
Objectives: Drug-induced sleep endoscopy (DISE) involves assessment of the upper airway using a flexible endoscope while patients are in a pharmacologically-induced sleep-like state. The aim of this article is to review the current literature regarding the role of DISE in children with obstructive sleep apnea (OSA). The indications, typical anesthetic protocol, comparison to other diagnostic modalities, scoring systems, and outcomes are discussed. Methods: A comprehensive review of literature regarding pediatric DISE up through May 2017 was performed...
December 2017: Laryngoscope Investigative Otolaryngology
https://www.readbyqxmd.com/read/29288749/enhanced-wakefulness-following-lesions-of-a-mesopontine-locus-essential-for-the-induction-of-general-anesthesia
#13
Sa'ar Lanir-Azaria, Guy Meiri, Tamir Avigdor, Anne Minert, Marshall Devor
The induction of general anesthesia shares many features with the transition from wakefulness to non-rapid eye movement (NREM) sleep, suggesting that the two types of brain-state transition are orchestrated by a common neuronal mechanism. Previous studies revealed a brainstem locus, the mesopontine tegmental anesthesia area (MPTA), that is of singular importance for anesthetic induction. Microinjection there of GABAergic anesthetics induces rapid loss-of-consciousness and lesions render the animal relatively insensitive to anesthetics administered systemically...
December 27, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/29284686/role-of-common-hypnotics-on-the-phenotypic-causes-of-obstructive-sleep-apnoea-paradoxical-effects-of-zolpidem
#14
Jayne C Carberry, Lauren P Fisher, Ronald R Grunstein, Simon C Gandevia, David K McKenzie, Jane E Butler, Danny J Eckert
Hypnotics are contraindicated in obstructive sleep apnoea (OSA) because of concerns of pharyngeal muscle relaxation and delayed arousal worsening hypoxaemia. However, human data are lacking. This study aimed to determine the effects of three common hypnotics on the respiratory arousal threshold, genioglossus muscle responsiveness and upper airway collapsibility during sleep.21 individuals with and without OSA (18-65 years) completed 84 detailed sleep studies after receiving temazepam (10 mg), zolpidem (10 mg), zopiclone (7...
December 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29284109/morin-hydrate-mitigates-rapid-eye-movement-sleep-deprivation-induced-neurobehavioural-impairments-and-loss-of-viable-neurons-in-the-hippocampus-of-mice
#15
Elizabeth T Olonode, Adegbuyi O Aderibigbe, Olusegun A Adeoluwa, Anthony T Eduviere, Benneth Ben-Azu
Rapid eye movement sleep deprivation distorts the body's homeostasis and results in oxidative breakdown which may be responsible for a variety of neurological disorders. Some naturally occurring compounds of plant origin with antioxidant and neuroprotective properties are known to attenuate the detrimental effects of REM sleep deprivation. Morin hydrate, a flavonoid from Mulberry has demonstrated antioxidant and neuroprotective activities but its effect in sleep disturbed mice is unknown. The study was designed to explore the neuroprotective effect of Morin hydrate on 48 hr...
December 25, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/29277338/hypothalamic-abnormalities-growth-failure-due-to-defects-of-the-ghrh-receptor
#16
Manuel H Aguiar-Oliveira, Caridad Davalos, Viviane C Campos, Luiz A Oliveira Neto, Cindi G Marinho, Carla R P Oliveira
Several acquired or congenital hypothalamic abnormalities may cause growth failure (GF). We described two of these congenital abnormalities. First, a case of CHARGE syndrome, an epigenetic disorder mostly caused by heterozygous mutations in the gene encoding CHD7, a chromatin remodeling protein, causing several malformations, some life-threatening, with additional secondary hypothalamus-hypophyseal dysfunction, including GF. Second, a cohort of individuals with genetic isolated severe GH deficiency (IGHD), due to a homozygous mutation in the GH-releasing hormone (GHRH) receptor gene described in Itabaianinha County, in northeast Brazil...
December 20, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/29273758/the-sleep-eeg-spectrum-is-a-sexually-dimorphic-marker-of-general-intelligence
#17
Péter P Ujma, Boris N Konrad, Ferenc Gombos, Péter Simor, Adrián Pótári, Lisa Genzel, Marcel Pawlowski, Axel Steiger, Róbert Bódizs, Martin Dresler
The shape of the EEG spectrum in sleep relies on genetic and anatomical factors and forms an individual "EEG fingerprint". Spectral components of EEG were shown to be connected to mental ability both in sleep and wakefulness. EEG sleep spindle correlates of intelligence, however, exhibit a sexual dimorphism, with a more pronounced association to intelligence in females than males. In a sample of 151 healthy individuals, we investigated how intelligence is related to spectral components of full-night sleep EEG, while controlling for the effects of age...
December 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29248868/sleep-architecture-and-eeg-power-spectra-in-recently-detoxified-alcohol-dependent-patients
#18
Lokesh Kumar Singh, S Haque Nizamie, Sai Krishna Tikka
OBJECTIVES: Persistent sleep abnormalities during abstinence are a harbinger for relapse in patients with chronic alcohol dependence. The present study aimed to compare polysomnography (PSG) data between 'recently detoxified' patients with chronic alcohol dependence and healthy controls. METHODS: Both conventional sleep architectural and power spectral analyses were conducted. Twenty subjects in each of the groups were enrolled. A 2 nights' sleep (first-habituation and second-experimental) PSG data was collected...
December 9, 2017: Asian Journal of Psychiatry
https://www.readbyqxmd.com/read/29247670/sleep-on-a-high-heat-capacity-mattress-increases-conductive-body-heat-loss-and-slow-wave-sleep
#19
Kurt Kräuchi, Elisa Fattori, Alessandra Giordano, Maria Falbo, Antonella Iadarola, Francesca Aglì, Antonella Tribolo, Roberto Mutani, Alessandro Cicolin
Environmental temperature can strongly affect sleep. The habitual sleep phase is usually located between evening decline and morning rise of the circadian rhythm of core body temperature (CBT). However, the thermophysiological mechanisms promoting or disturbing sleep are not yet fully understood. The purpose of this study was to examine the effects of a high heat capacity mattress (HHCM) on CBT, skin temperatures and sleep in comparison to a conventional low heat capacity mattress (LHCM). Based on the higher heat capacity of HHCM an increase in conductive body heat loss enhances the nocturnal decline in CBT can be expected...
December 13, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/29246271/a-new-stage-for-the-journal-of-clinical-sleep-medicine-rem
#20
Nancy A Collop
No abstract text is available yet for this article.
December 13, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
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