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https://www.readbyqxmd.com/read/28431177/altered-functional-connectivity-in-idiopathic-rapid-eye-movement-sleep-behavior-disorder-a-resting-state-eeg-study
#1
Jun-Sang Sunwoo, Sanghun Lee, Jung-Hoon Kim, Jung-Ah Lim, Tae-Joon Kim, Jung-Ick Byun, Min Hee Jeong, Kwang Su Cha, Jeong Woo Choi, Kyung Hwan Kim, Soon-Tae Lee, Keun-Hwa Jung, Kyung-Il Park, Kon Chu, Manho Kim, Sang Kun Lee, Ki-Young Jung
Study Objectives: Idiopathic rapid eye movement sleep behavior disorder (iRBD) is considered as a prodromal stage of synucleinopathy. Although loss of functional connectivity is implicated in neurodegenerative diseases, network characteristics of electroencephalography (EEG) in iRBD are unknown. Therefore, we evaluated resting-state EEG functional connectivity to identify the brain network changes in patients with iRBD. Methods: We prospectively enrolled 20 patients with polysomnography-confirmed iRBD and 16 control subjects...
April 18, 2017: Sleep
https://www.readbyqxmd.com/read/28431171/heritability-of-heart-rate-response-to-arousals-in-twins
#2
Xiaoling Gao, Ali Azarbarzin, Brendan T Keenan, Michele Ostrowski, Frances M Pack, Bethany Staley, Greg Maislin, Allan I Pack, Magdy Younes, Samuel T Kuna
Objectives: To determine if the large and highly reproducible inter-individual differences in arousal intensity and heart rate response to arousal (ΔHR) during non-REM sleep are heritable. Methods: Polysomnograms of 55 monozygotic (14 male and 41 female pairs) and 36 dizygotic (15 male and 21 female pairs) same-sex twin pairs were analyzed. Arousals were scored using the 2012 American Academy of Sleep Medicine criteria. Arousal intensity was scaled (between 0 and 9) using an automatic algorithm based on the change in EEG time and frequency characteristics...
April 18, 2017: Sleep
https://www.readbyqxmd.com/read/28431164/low-activity-microstates-during-sleep
#3
Hiroyuki Miyawaki, Yazan N Billeh, Kamran Diba
Study Objectives: To better understand the distinct activity patterns of the brain during sleep, we observed and investigated periods of diminished oscillatory and population spiking activity lasting for seconds during non-REM sleep, which we call "LOW" activity sleep. Methods: We analyzed spiking and local field potential (LFP) activity of hippocampal CA1 region alongside neocortical electroencephalogram (EEG) and electromyogram (EMG) in 19 sessions from four male Long-Evans rats (262-363g) during natural wake/sleep across the 24-hr cycle, as well as data from other brain regions obtained from http://crcns...
April 18, 2017: Sleep
https://www.readbyqxmd.com/read/28431122/the-sense-study-treatment-mechanisms-of-a-cognitive-behavioral-and-mindfulness-based-group-sleep-improvement-intervention-for-at-risk-adolescents
#4
Matthew Blake, Orli Schwartz, Joanna M Waloszek, Monika Raniti, Julian G Simmons, Greg Murray, Laura Blake, Ronald E Dahl, Richard Bootzin, Dana L McMakin, Paul Dudgeon, John Trinder, Nicholas B Allen
Objective: The aim of this study was to test whether a cognitive-behavioral and mindfulness-based sleep intervention could improve sleep and anxiety on school nights in a group of at-risk adolescents. We also examined whether benefits to sleep and anxiety would be mediated by improvements in sleep hygiene awareness and pre-sleep hyperarousal. Method: Secondary analysis of a randomized controlled trial conducted with 123 adolescent participants (Female=60%; Mean Age=14...
April 18, 2017: Sleep
https://www.readbyqxmd.com/read/28431118/combining-human-epigenetics-and-sleep-studies-in-c-elegans-a-cross-species-approach-for-finding-conserved-genes-regulating-sleep
#5
Huiyan Huang, Yong Zhu, Melissa N Eliot, Valerie S Knopik, John E McGeary, Mary A Carskadon, Anne C Hart
Study Objectives: We aimed to test a combined approach to identify conserved genes regulating sleep and to explore the association between DNA methylation and sleep length. Methods: We identified candidate genes associated with shorter versus longer sleep duration in college students based on DNA methylation using Illumina Infinium HumanMethylation450 BeadChip arrays. Orthologous genes in Caenorhabditiselegans were identified and we examined whether their loss of function affected C...
April 18, 2017: Sleep
https://www.readbyqxmd.com/read/28419388/daytime-sleepiness-increases-with-age-in-early-adolescence-a-sleep-restriction-dose-response-study
#6
Ian G Campbell, Christopher S Burright, Amanda M Kraus, Kevin J Grimm, Irwin Feinberg
Study Objectives: Daytime sleepiness increases across adolescence. This increase is commonly attributed to insufficient sleep durations resulting from increasingly limited time in bed. We tested the effects of 3 sleep schedules on daytime sleepiness and whether these effects changed with age in early adolescence. Methods: In 77 children ranging in age from 9.9 to 14 years, objective (multiple sleep latency test - MSLT) and subjective (Karolinska sleepiness scale -KSS) sleepiness was measured following 4 consecutive nights of either 7, 8...
April 17, 2017: Sleep
https://www.readbyqxmd.com/read/28419387/effect-of-continuous-positive-airway-pressure-treatment-on-health-related-quality-of-life-and-sleepiness-in-high-cardiovascular-risk-individuals-with-sleep-apnea-best-apnea-interventions-for-research-bestair-trial
#7
Ying Y Zhao, Rui Wang, Kevin J Gleason, Eldrin F Lewis, Stuart F Quan, Claudia M Toth, Michael Morrical, Michael Rueschman, Jia Weng, James H Ware, Murray A Mittleman, Susan Redline
Study Objectives: The long term effect of continuous positive airway pressure (CPAP) on health-related quality of life (HRQOL) in patients with high cardiovascular disease risk and obstructive sleep apnea (OSA) without severe sleepiness is uncertain. We aimed to determine the effect of CPAP treatment on HRQOL in individuals with moderate or severe OSA and cardiovascular disease (CVD) or multiple CVD risk factors without severe sleepiness. Methods: In this randomized, controlled, parallel group study, 169 participants were assigned to treatment with CPAP or the control group (conservative medical therapy [CMT] or CMT with sham CPAP)...
April 17, 2017: Sleep
https://www.readbyqxmd.com/read/28419383/cell-death-biomarkers-and-obstructive-sleep-apnea-implications-in-the-acute-coronary-syndrome
#8
Josep Miquel Bauça, Aina Yañez, Laura Fueyo, Mónica de la Peña, Javier Pierola, Alicia Sánchez-de-la-Torre, Olga Mediano, Valentín Cabriada-Nuño, María José Masdeu, Joaquin Teran-Santos, Joaquin Duran-Cantolla, Juan Fernando Masa, Jorge Abad, Manuel Sanchez-de-la-Torre, Ferran Barbé, Antònia Barceló
Background: Nucleosomes and cell-free DNA (dsDNA) have been suggested as promising biomarkers in cell death-related diseases, such as acute coronary syndrome (ACS). Currently, the impact of obstructive sleep apnea (OSA) in patients with ACS is unclear. Our aim was to evaluate the relationship between OSA, dsDNA and nucleosomes, and to assess their potential implication in the development of ACS. Methods: Up to 549 patients were included in the study and divided into 4 groups (145 ACS; 290 ACS+OSA; 62 OSA; 52 controls)...
April 17, 2017: Sleep
https://www.readbyqxmd.com/read/28419371/sleep-a-window-into-autonomic-control-in-children-born-preterm-and-growth-restricted
#9
Stephanie R Yiallourou, Euan M Wallace, Christie Whatley, Alexsandria Odoi, Samantha Hollis, Aidan J Weichard, Jayan Shivanandhan Muthusamy, Suraj Varma, James Cameron, Om Narayan, Rosemary Sc Horne
Study Objectives: Preterm birth and fetal growth restriction (FGR) are both associated with risk of hypertension in adulthood. Mechanisms leading to this pathology are unclear. In children aged 5-12 years, who were born preterm and FGR, we used sleep as a tool to assess autonomic control with assessment of cardiovascular structure and function. Methods: 18 children born preterm and FGR, 15 born preterm with appropriate birth weights (AGA) and 20 AGA term-born children were studied...
April 17, 2017: Sleep
https://www.readbyqxmd.com/read/28419375/transcriptional-profiling-of-cholinergic-neurons-from-basal-forebrain-identifies-changes-in-expression-of-genes-between-sleep-and-wake-mrna-profiling-in-basal-forebrain-with-sleep-sleep-deprivation
#10
Elena V Nikonova, Jason DA Gilliland, Keith Q Tanis, Alexei A Podtelezhnikov, Alison M Rigby, Raymond J Galante, Eva M Finney, David J Stone, John J Renger, Allan I Pack, Christopher J Winrow
Study objective: To assess differences in gene expression in cholinergic basal forebrain cells between sleeping and sleep deprived mice sacrificed at the same time of day. Methods: Tg(ChAT-eGFP)86Gsat mice expressing eGFP under control of the choline acetyltransferase (Chat) promoter were utilized to guide laser capture of cholinergic cells in basal forebrain. mRNA expression levels in these cells were profiled using microarrays. Gene expression in eGFP(+) neurons was compared (1) to that in eGFP(-) neurons and to adjacent white matter, (2) between 7:00 am (lights on) and 7:00 pm (lights off), (3) between sleep deprived and sleeping animals at 0, 3, 6, 9 hrs from lights on...
April 13, 2017: Sleep
https://www.readbyqxmd.com/read/28419356/arousal-induced-hypocapnia-does-not-reduce-genioglossus-activity-in-obstructive-sleep-apnea-arousal-induced-hypocapnia-in-osa-muscle-effects
#11
Jennifer M Cori, Therese Thornton, Fergal J O'Donoghue, Peter D Rochford, David P White, John Trinder, Amy S Jordan
Study Objectives: To determine whether arousals that terminate obstructive events in obstructive sleep apnea (OSA): 1. Induce hypocapnia and 2. Subsequently reduce genioglossus muscle activity following the return to sleep. Methods: 31 untreated OSA patients slept instrumented with: sleep staging electrodes, nasal mask and pneumotachograph, end-tidal CO2 monitoring and intramuscular genioglossus electrodes. End-tidal CO2 was monitored and respiratory arousals were assigned an end-arousal CO2 change value (PETCO2 on the last arousal breath minus each individual's wakefulness PETCO2)...
April 13, 2017: Sleep
https://www.readbyqxmd.com/read/28419320/therapeutic-cpap-level-predicts-upper-airway-collapsibility-in-patients-with-obstructive-sleep-apnea-therapeutic-cpap-predicts-upper-airway-collapsibility
#12
Shane A Landry, Simon A Joosten, Danny J Eckert, Amy S Jordan, Scott A Sands, David P White, Atul Malhotra, Andrew Wellman, Garun S Hamilton, Bradley A Edwards
Study Objectives: Upper airway collapsibility is a key determinant of obstructive sleep apnea (OSA) which can influence the efficacy of certain non-CPAP treatment for OSA. However, there is no simple way to measure this variable clinically. The present study aimed to develop a clinically implementable tool to evaluate the collapsibility of a patient's upper airway. Methods: Collapsibility, as characterized by the passive pharyngeal critical closing pressure (Pcrit), was measured in 46 patients with OSA...
April 13, 2017: Sleep
https://www.readbyqxmd.com/read/28369543/sleep-during-pregnancy-the-numom2b-pregnancy-and-sleep-duration-and-continuity-study
#13
Kathryn J Reid, Francesca L Facco, William A Grobman, Corette B Parker, Marcos Herbas, Shannon Hunter, Robert M Silver, Robert C Basner, George R Saade, Grace W Pien, Shalini Manchanda, Judette M Louis, Chia-Ling Nhan-Chang, Judith H Chung, Deborah A Wing, Hyagriv N Simhan, David M Haas, Jay Iams, Samuel Parry, Phyllis C Zee
Study Objectives: To characterize sleep duration, timing and continuity measures in pregnancy and their association with key demographic variables. Methods: Multi-site prospective cohort study. Women enrolled in the nuMoM2b study (nulliparous women with a singleton gestation) were recruited at the second study visit (16- 21 weeks of gestation) to participate in the Sleep Duration and Continuity Substudy. Women <18 years of age, or with pregestational diabetes or chronic hypertension were excluded from participation...
March 24, 2017: Sleep
https://www.readbyqxmd.com/read/28369624/the-impact-of-subthalamic-deep-brain-stimulation-on-sleep-wake-behavior-a-prospective-electrophysiological-study-in-50-parkinson-patients
#14
Heide Baumann-Vogel, Lukas L Imbach, Oguzkan Sürücü, Lennart Stieglitz, Daniel Waldvogel, Christian R Baumann, Esther Werth
Study Objectives: This prospective observational study was designed to systematically examine the effect of subthalamic deep brain stimulation (DBS) on subjective and objective sleep-wake parameters in Parkinson patients. Methods: In 50 consecutive Parkinson patients undergoing subthalamic DBS, we assessed motor symptoms, medication, the position of DBS electrodes within the subthalamic nucleus, subjective sleep-wake parameters, two-week actigraphy, video-polysomnography studies and sleep EEG frequency and dynamics analyses before and 6 months after surgery...
March 23, 2017: Sleep
https://www.readbyqxmd.com/read/28329120/sleep-wake-disturbances-after-traumatic-brain-injury-synthesis-of-human-and-animal-studies
#15
Danielle K Sandsmark, Jonathan E Elliott, Miranda M Lim
Sleep-wake disturbances following traumatic brain injury (TBI) are increasingly recognized as a serious consequence following injury and as a barrier to recovery. Injury-induced sleep-wake disturbances can persist for years, often impairing quality of life. Recently, there has been a nearly exponential increase in the number of primary research articles published on the pathophysiology and mechanisms underlying sleep-wake disturbances after TBI, both in animal models and human subjects, including in the pediatric population...
March 17, 2017: Sleep
https://www.readbyqxmd.com/read/28329332/excessive-daytime-sleepiness-predicts-neurodegeneration-in-idiopathic-rem-sleep-behavior-disorder
#16
Junying Zhou, Jihui Zhang, Siu Ping Lam, Joey Wy Chan, Vincent Mok, Anne Chan, Shirley Xin Li, Yaping Liu, Xiangdong Tang, Wing Ho Yung, Yun Kwok Wing
Study Objectives: To determine the association of excessive daytime sleepiness (EDS) with the conversion of neurodegenerative diseases in patients with idiopathic REM sleep behavior disorder (iRBD). Methods: A total of 179 patients with iRBD (79.1% males, mean age = 66.3 ± 9.8 years) were consecutively recruited. Forty-five patients with Epworth Sleepiness Scale score ≥ 14 were defined as having EDS. Demographic, clinical and polysomnographic data were compared between iRBD patients with and without EDS...
March 16, 2017: Sleep
https://www.readbyqxmd.com/read/28329370/sleep-characteristics-and-daytime-cortisol-levels-in-older-adults
#17
Ethan Morgan, L Philip Schumm, Martha McClintock, Linda Waite, Diane S Lauderdale
Objective: Older adults frequently report sleep problems and are at increased risk for cardiometabolic disruption. Experimental sleep restriction of younger adults has suggested that cortisol may be on the pathway between sleep restriction and cardiometabolic disease. We investigated whether the natural variation in sleep among older adults is associated with daytime cortisol level. Methods: Salivary cortisol samples and actigraphy sleep data were collected from a random subsample of participants in the National Social Life, Health and Aging Project, a nationally-representative probability sample of adults aged 62-90 (N=672)...
March 9, 2017: Sleep
https://www.readbyqxmd.com/read/28329079/sleep-duration-and-cardiometabolic-risk-among-chinese-school-aged-children-do-adipokines-play-a-mediating-role
#18
Lujiao Li, Junling Fu, Xin Ting Yu, Ge Li, Lu Xu, Jinghua Yin, Hong Cheng, Dongqing Hou, Xiaoyuan Zhao, Shan Gao, Wenhui Li, Changhong Li, Struan F A Grant, Mingyao Li, Yi Xiao, Jie Mi, Ming Li
Objective: To assess the associations between sleep duration and cardiometabolic risk factors in Chinese school-aged children and to explore the possible mediating role of adipokines. Methods: Sleep duration was collected in 3,166 children from the Beijing Child and Adolescent Metabolic Syndrome study. Glucose homeostasis and other cardiometabolic risk factors were assessed. Serum adipokines including leptin, total and high-molecular-weight (HMW) adiponectin, resistin, fibroblast growth factor 21 (FGF21) and retinol binding protein 4 (RBP4) were determined...
March 9, 2017: Sleep
https://www.readbyqxmd.com/read/28329207/people-centered-language-recommendations-for-sleep-research-communication
#19
Rebecca Fuoco
The growing embrace of patient-centered outcomes research (PCOR) in sleep medicine is a significant step forward for the field. In engaging and incorporating the unique perspectives of people with sleep disorders, PCOR enhances the relevance of findings and facilitates the uptake of research into practice. While centering research design around what matters most to people with sleep disorders is critical, research communication must be similarly people-centered. One approach is using "people-centered language" in both professional and public communications...
March 6, 2017: Sleep
https://www.readbyqxmd.com/read/28329386/eeg-changes-accompanying-successive-cycles-of-sleep-restriction-with-and-without-naps-in-adolescents
#20
Ju Lynn Ong, June C Lo, Joshua J Gooley, Michael W L Chee
Study Objectives: To investigate the temporal evolution of sleep EEG changes in adolescents across two cycles of sleep restriction and recovery simulating an intense school week and to examine the effect of an afternoon nap on nocturnal sleep. Methods: A parallel-group design, quasi-laboratory study was conducted in a student hostel. Fifty-seven adolescents (31 males, age=15-19y) were randomly assigned to nap or no nap groups. Participants underwent a 15-day protocol comprising two sleep restriction (5h time-in-bed) and recovery (9h time-in-bed) cycles...
March 3, 2017: Sleep
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