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Sleep Science

M Ejaz Hussain, Abu Hasnath M Golam Sarwar, Mohd Shoeb Alam, Majumi M Noohu, Wassilatul Zannat, Seithikurippu R Pandi-Perumal, Ahmed S Bahammam, Md Dilshad Manzar
A growing body of evidence has delineated the predominant role of humoral mediators of inflammation in linking sleep with immunity. Nonetheless, characterization of the relationship between complement components with inflammatory functions and objective sleep measures has not been performed. In this study we investigated the relationships between objective measures of sleep and complement components with inflammatory functions. Thirty-six healthy male university students (age, 23.94±4.23 years; BMI, 23.44±2...
April 2016: Sleep Science
Roberta Ferranti, Stefano Marventano, Sabrina Castellano, Gabriele Giogianni, Francesca Nolfo, Stefania Rametta, Margherita Matalone, Antonio Mistretta
The aim of this study was to evaluate the association between sleeping habits, Mediterranean diet pattern, and weight status in an adolescent population. The sample consisted of 1586 individuals aged 11-14 years attending 15 secondary schools of Sicily, Southern Italy. School were randomly selected and the data collected during two school years. Anthropometric data was collected and body composition was assessed by bioelectrical impedance analysis. Demographic information, sleep duration, pediatric daytime sleepiness questionnaire (PDSS), physical activity and dietary habits (including adherence to the Mediterranean Diet using the KIDMED score) were further collected...
April 2016: Sleep Science
Yuko Morita, Keiko Ogawa, Sunao Uchida
The present study examined whether a nap after complex motor learning enhanced the following day's physical performance. Eighteen volunteers met the inclusion criteria and were assigned to either a nap (n=9; men=5; mean age=21.0±1.5) or no-nap group (n=9; men=5; mean age=21.9±0.3). Participants practiced juggling in the morning and were tested immediately afterwards. Participants of the nap group were given a 70-minute nap opportunity after juggling practice, while the no-nap group stayed awake. Juggling performance was then tested in the evening (retest-1) and the next morning (retest-2)...
April 2016: Sleep Science
Michael B Fawale, Olanrewaju Ibigbami, Ishaq Ismail, Adekunle F Mustapha, Morenikeji A Komolafe, Michael A Olamoyegun, Tewogbade A Adedeji
OBJECTIVES: To evaluate the risk of obstructive sleep apnea (OSA) in a primary care population of elderly Nigerians and to determine its correlates. METHODS: Clinical and demographic data of 414 elderly individuals in a primary care clinic were obtained. Their risk of OSA was estimated using Berlin questionnaire while Epworth sleepiness scale and the Center for Epidemiologic Studies Depression Scale (CESD-10) were also administered. RESULTS: Of the 414 subjects, 96 (23...
April 2016: Sleep Science
A J Ruiz, Martín Alonso Rondón Sepúlveda, Patricia Hidalgo Martínez, Martín Cañón Muñoz, Liliana Otero Mendoza, Olga Patricia Panqueva Centanaro, Luis Felipe Uriza Carrasco, Juan Camilo Ospina García
STUDY OBJECTIVES: To determine the prevalence of sleep complaints in adults in Colombia at different altitudes. DESIGN: Cross-sectional, population-based and observational study. SETTING: Urban areas in three cities (Bogotá, Bucaramanga, Santa Marta) located between 15 and 2640 masl. Subjects Over 18 years old. INTERVENTIONS: Epworth sleepiness scale (ESS), Pittsburgh sleep quality index (PSQI), Berlin questionnaire, STOP-Bang questionnaire and diagnostic criteria for restless leg syndrome (IRLSSG)...
April 2016: Sleep Science
Michael J Decker, Karra Jones, Glenda L Keating, Elizabeth G Damato, Rebecca Darrah
INTRODUCTION: Up to 84% of prematurely born infants suffer hypoxic, anoxic, and ischemic insults. Those infants with subsequent behavioral, motor or cognitive dysfunction represent 8-11% of all live births. Yet, no interventions employed during pregnancy attenuate risk of morbidity in those at-risk infants. Dietary supplementation with omega-3 polyunsaturated fatty acids (ω-3 PUFAs) has been shown to reduce stroke-induced neuropathology in rat models emulating this adverse clinical event...
April 2016: Sleep Science
Bruno F Calegare, Alicia Costa, Leandro Fernandes, Ana L Dias, Pablo Torterolo, Vânia D' Almeida
In the postero-lateral hypothalamus are located two neuronal systems that utilize the neuropeptides melanin-concentrating hormone (MCH) and hypocretins (also called orexins) as neuromodulators. These systems have reciprocal connections between them, and project throughout the central nervous system. MCH has been involved in the generation of sleep, mainly REM sleep, while hypocretins have a critical role in the generation of wakefulness. MCHergic activity is also involved in the pathophysiology of major depressive disorder (MD)...
April 2016: Sleep Science
Virginia Mancebo-Sosa, Viridiana Mancilla-Hernández, Joana Miranda-Ortiz, Aremy Hernández-Torres, Romel Gutierrez-Escobar, Adrian Poblano, Ulises Jiménez-Correa
INTRODUCTION: Sleep movement disorders includes mainly periodic limb movement and others. The more frequent breathing disorders are: obstructive sleep apnea-hypopnea syndrome and primary snoring. OBJECTIVE: To compare sleep architecture in periodic limb movements and breathing disorders of different severity, and weight their interactions. METHODS: We compared sleep architecture in 160 patients, divided in six groups: periodic limb movements (n=25), obstructive apnea only (n=30), periodic limb movements/snoring (n=30), periodic limb movements/mild apnea (n=25), periodic limb movements/moderate apnea (n=25), periodic limb movements/severe apnea (n=26)...
April 2016: Sleep Science
Juhani E Lehto, Outi Aho, Mari Eklund, Marika Heinaro, Sari Kettunen, Aila Peltomäki, Katja Ylä-Kotola, Kaarina Öst, Timo Partonen
PURPOSE: Despite progress in research concerning adolescent and young adult sleep and circadian preferences, several aspects have remained unexamined. This study explored gender and diurnal rhythms in relation to several sleep-related factors: sleep duration, bedtime, wake-up time, tiredness, sleepiness, and optimal subjective sleep duration. METHODS: Circadian preferences and sleep were investigated in 555 (Females N=247) Finnish students aged 15-20. The self-report measures included a shortened version of the Horne-Östberg Morningness-Eveningness Scale, the Epworth Sleepiness Scale as well as items probing feelings of tiredness, optimal subjective sleep durations, and bedtime and wake-up time on the most recent day and a typical weekend...
April 2016: Sleep Science
Cátia Reis, Catarina Mestre, Helena Canhão, David Gradwell, Teresa Paiva
This work aimed to determine daytime sleepiness and sleep complaints prevalence and the corresponding influence on perceived fatigue and to evaluate the influence of sociodemographic parameters and labour variables on sleep complaints, sleepiness and fatigue. A questionnaire was developed including socio-economic and labour issues and instruments, focused in sleep and fatigue. The response rate was 32% and the final sample had 435 pilots. The prevalence of sleep complaints was 34.9%, daytime sleepiness 59.3% and fatigue 90...
April 2016: Sleep Science
I Zibrandtsen, P Kidmose, M Otto, J Ibsen, T W Kjaer
BACKGROUND: We investigate the potential usability of a novel in-the-ear electroencephalography recording device for sleep staging. METHODS: In one healthy subject we compare simultaneous earelectroencephalography to standard scalp EEG visually and using power spectrograms. Hypnograms independently derived from the records are compared. RESULTS: We find that alpha activity, K complexes, sleep spindles and slow wave sleep can be visually distinguished using earelectroencephalography...
April 2016: Sleep Science
Shih-Bin Yeh, Carlos H Schenck
The first case of video-polysomnography (vPSG) documented sleep masturbation in a male is reported, and the second reported case of shift work induced sexsomnia. A 20 y.o. soldier with childhood sleepwalking (SW) developed sleep masturbation and SW triggered by military shift work. vPSG documented two episodes of sleep masturbation from N2 sleep in the fourth sleep cycle and from N3 sleep during the fifth sleep cycle. There was no sleep-disordered breathing nor periodic limb movements. vPSG thus confirmed confusional arousals from NREM sleep as the cause of the masturbation...
April 2016: Sleep Science
Kunjumon I Vadakkan
Unlike other organs that operate continuously, such as the heart and kidneys, many of the operations of the nervous system shut down during sleep. The evolutionarily conserved unconscious state of sleep that puts animals at risk from predators indicates that it is an indispensable integral part of systems operation. A reasonable expectation is that any hypothesis for the mechanism of the nervous system functions should be able to provide an explanation for sleep. In this regard, the semblance hypothesis is examined...
April 2016: Sleep Science
Tomoyuki Kawada
No abstract text is available yet for this article.
April 2016: Sleep Science
Fulvio A Scorza, Carla A Scorza, Esper A Cavalheiro, Sergio Tufik, Monica L Andersen
No abstract text is available yet for this article.
April 2016: Sleep Science
Ana Carolina D Noseda, Adriano D S Targa, Lais S Rodrigues, Mariana F Aurich, Marcelo M S Lima
The aim of this study was to investigate the possible anxiolytic-like effects of striatal MT2 activation, and its counteraction induced by the selective blockade of this receptor. Furthermore, we analyzed this condition under the paradigm of rapid eye movement (REM) sleep deprivation (REMSD) and the animal model of Parkinson's disease (PD) induced by rotenone. Male Wistar rats were infused with intranigral rotenone (12 μg/μL), and 7 days later were subjected to 24 h of REMSD. Afterwards the rats underwent striatal micro-infusions of selective melatonin MT2 receptor agonist, 8-M-PDOT (10 μg/μL) or selective melatonin MT2 receptor antagonist, 4-P-PDOT (5 μg/μL) or vehicle...
January 2016: Sleep Science
Mario André Leocadio Miguel, Luiz Menna-Barreto
Systemic Lupus Eritematosus (SLE) is a systemic inflammatory disease often treated with the agent cyclophosphamide (CY), known by provoking important adverse reactions to the organism. Ader and Cohen have demonstrated an alternative way of administrating this agent based on pavlovian conditioning, in order to reduce the aggression caused by CY. Considering the influence of the temporal organization on learning and memory processes, the purpose of this study was to understand the temporal aspects involved in the conditioned immunomodulation...
January 2016: Sleep Science
Bettina Tassino, Stefany Horta, Noelia Santana, Rosa Levandovski, Ana Silva
In humans, a person's chronotype depends on environmental cues and on individual characteristics, with late chronotypes prevailing in youth. Social jetlag (SJL), the misalignment between an individual׳s biological clock and social time, is higher in late chronotypes. Strong SJL is expected in Uruguayan university students with morning class schedules and very late entertainment activities. Sleep disorders have been reported in Antarctic inhabitants, that might be a response to the extreme environment or to the strictness of Antarctic life...
January 2016: Sleep Science
Lindsay D'Silva, Maria Wilczynska, Keir Lewis, Matthew Lawrence, Karl Hawkins, Rhodri Williams, Sophia Stanford, Simon Davidson, Keith Morris, Adrian Evans
Abnormal clot microstructure plays a pivotal role in the pathophysiology of thromboembolic diseases. Assessing the viscoelastic properties of clot microstructure using novel parameters, Time to Gel Point (T GP ), Fractal Dimension (d f ) and clot elasticity (G׳ GP ) could explain the increased cardiovascular and thromboembolic events in patients with Obstructive Sleep Apnoea Hypopnea Syndrome (OSAHS). We wanted to compare T GP , d f , and G׳ GP and their diurnal variation in OSAHS and symptomatic comparators...
January 2016: Sleep Science
Teresa Paiva, Tania Gaspar, Margarida Gaspar Matos
OBJECTIVES: The aim is to evaluate the mutual influences between sleep duration/sleep deprivation (SD) and the sleep stealers/adolescent risk behaviours. METHODS: The national survey is a component of the Health Behaviour in School-Aged Children (HBSC) study, it is based on a school-based self-completed questionnaire; 3476 students were randomly selected from 139 randomly chosen Portuguese schools using as an unit the class, 53.8% were girls; 45.9% attended the 8th grade and 54...
January 2016: Sleep Science
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