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https://www.readbyqxmd.com/read/28934729/the-effect-of-perceived-stress-on-epstein-barr-virus-antibody-titers-in-appalachian-ohio-women
#1
Melissa J Brook, Lisa M Christian, Erinn M Hade, Mack T Ruffin
OBJECTIVE: The Appalachian population suffers a disparate burden of chronic stress leading to high perceived stress. The study aim was to determine the association between perceived stress and Epstein-Barr virus (EBV) antibody titers, along with the impact of perceived social support, Appalachian self-identify, and health behaviors. METHODS: Serum EBV VCA-IgG antibody titer levels from 169 female Appalachian residents (aged 18-26 years) were examined. Perceived stress, perceived social support, Appalachian self-identity, and health behaviors were assessed via self-administered questionnaires...
September 22, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28934533/carotid-artery-wall-thickness-in-obese-and-nonobese-adults-with-obstructive-sleep-apnea-before-and-following-positive-airway-pressure-treatment
#2
Jinyoung Kim, Emile R Mohler, Brendan T Keenan, David Maislin, Erna Sif Arnardottir, Thorarinn Gislason, Bryndis Benediktsdottir, Sigrun Gudmundsdottir, Andrea Sifferman, Bethany Staley, Frances M Pack, Greg Maislin, Julio A Chirinos, Raymond R Townsend, Allan I Pack, Samuel T Kuna
Study objectives: Debate persists as to whether obstructive sleep apnea (OSA) is an independent risk factor for atherosclerosis. The purpose of this study was to compare carotid intima-media thickness (IMT), an early sign of atherosclerosis, in obese and nonobese adults with OSA before and following positive airway pressure (PAP) treatment. Methods: A total of 206 adults newly diagnosed with OSA with an apnea-hypopnea index (AHI) of 15-75 events/hour and 53 controls with AHI <10 were studied...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28934532/preemptive-caffeine-administration-blocks-the-increase-in-postoperative-pain-caused-by-previous-sleep-loss-in-the-rat-a-potential-role-for-preoptic-adenosine-a2a-receptors-in-sleep-pain-interactions
#3
Viviane S Hambrecht-Wiedbusch, Maya Gabel, Linda J Liu, John P Imperial, Angelo V Colmenero, Giancarlo Vanini
Sleep and pain are reciprocally related, but the precise mechanisms underlying this relationship are poorly understood. This study used a rat model of surgical pain to examine the effect of previous sleep loss on postoperative pain and tested the hypothesis that preoptic adenosinergic mechanisms regulate sleep-pain interactions. Relative to ad libitum sleep, 6 hours of total sleep deprivation prior to a surgical incision significantly enhanced postoperative mechanical hypersensitivity in the affected paw and prolonged the time to recovery from surgery...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28934531/feasibility-and-emotional-impact-of-experimentally-extending-sleep-in-short-sleeping-adolescents
#4
Tori R Van Dyk, Nanhua Zhang, Perry A Catlin, Kaylin Cornist, Shealan McAlister, Catharine Whitacre, Dean W Beebe
Study Objectives: Published experimental sleep manipulation protocols for adolescents have been limited to the summer, limiting causal conclusions about how short sleep affects them on school nights, when they are most likely to restrict their sleep. This study assesses the feasibility and emotional impact of a school-night sleep manipulation protocol to test the effects of lengthening sleep in habitually short-sleeping adolescents. Methods: High school students aged 14-18 years who habitually slept 5-7 hours on school nights participated in a 5-week experimental sleep manipulation protocol...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28934530/intraindividual-increase-of-homeostatic-sleep-pressure-across-acute-and-chronic-sleep-loss-a-high-density-eeg-study
#5
Angelina Maric, Caroline Lustenberger, Esther Werth, Christian R Baumann, Rositsa Poryazova, Reto Huber
Study Objectives: To compare intraindividually the effects of acute sleep deprivation (ASD) and chronic sleep restriction (CSR) on the homeostatic increase in slow wave activity (SWA) and to relate it to impairments in basic cognitive functioning, that is, vigilance. Methods: The increase in SWA after ASD (40 hours of wakefulness) and after CSR (seven nights with time in bed restricted to 5 hours per night) relative to baseline sleep was assessed in nine healthy, male participants (age = 18-26 years) by high-density electroencephalography...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28934529/traveling-slow-oscillations-during-sleep-a-marker-of-brain-connectivity-in-childhood
#6
Salome Kurth, Brady A Riedner, Douglas C Dean, Jonathan O'Muircheartaigh, Reto Huber, Oskar G Jenni, Sean C L Deoni, Monique K LeBourgeois
Slow oscillations, a defining characteristic of the nonrapid eye movement sleep electroencephalogram (EEG), proliferate across the scalp in highly reproducible patterns. In adults, the propagation of slow oscillations is a recognized fingerprint of brain connectivity and excitability. In this study, we (1) describe for the first time maturational features of sleep slow oscillation propagation in children (n = 23; 2-13 years) using high-density (hd) EEG and (2) examine associations between sleep slow oscillatory propagation characteristics (ie, distance, traveling speed, cortical involvement) and white matter myelin microstructure as measured with multicomponent Driven Equilibrium Single Pulse Observation of T1 and T2-magnetic resonance imaging (mcDESPOT-MRI)...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28934528/the-impact-of-altitude-on-sleep-disordered-breathing-in-children-dwelling-at-high-altitude-a-crossover-study
#7
Benjamin H Hughes, John T Brinton, David G Ingram, Ann C Halbower
Study Objectives: Sleep-disordered breathing (SDB) is prevalent among children and is associated with adverse health outcomes. Worldwide, approximately 250 million individuals reside at altitudes higher than 2000 meters above sea level (masl). The effect of chronic high-altitude exposure on children with SDB is unknown. This study aims to determine the impact of altitude on sleep study outcomes in children with SDB dwelling at high altitude. Methods: A single-center crossover study was performed to compare results of high-altitude home polysomnography (H-PSG) with lower altitude laboratory polysomnography (L-PSG) in school-age children dwelling at high altitude with symptoms consistent with SDB...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28934527/proton-mr-spectroscopy-in-patients-with-sleep-related-hypermotor-epilepsy-she-evidence-of-altered-cingulate-cortex-metabolism
#8
Ilaria Naldi, Francesca Bisulli, Claudia Testa, Giovanni Rizzo, Lorenzo Ferri, Laura L Gramegna, Laura Licchetta, Raffaele Lodi, Caterina Tonon, Paolo Tinuper
Study Objectives: To identify structural and/or metabolic alterations in patients with sleep-related hypermotor epilepsy (SHE) using magnetic resonance imaging (MRI) and proton MR spectroscopy (1H-MRS). Methods: Nineteen SHE patients (seven males; 34.7 ± 9.7 years, mean age ± standard deviation) and 17 matched healthy volunteers (seven males; 34.0 ± 8.9 years) were included in the study. In all patients, the diagnosis of SHE was confirmed by video-polysomnographic recording of seizures...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28934526/mechanisms-of-memory-retrieval-in-slow-wave-sleep
#9
Scott A Cairney, Justyna M Sobczak, Shane Lindsay, M Gareth Gaskell
Study Objectives: Memories are strengthened during sleep. The benefits of sleep for memory can be enhanced by re-exposing the sleeping brain to auditory cues; a technique known as targeted memory reactivation (TMR). Prior studies have not assessed the nature of the retrieval mechanisms underpinning TMR: the matching process between auditory stimuli encountered during sleep and previously encoded memories. We carried out two experiments to address this issue. Methods: In Experiment 1, participants associated words with verbal and nonverbal auditory stimuli before an overnight interval in which subsets of these stimuli were replayed in slow-wave sleep...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28934525/short-daytime-naps-briefly-attenuate-objectively-measured-sleepiness-under-chronic-sleep-restriction
#10
Jared M Saletin, Cassie J Hilditch, William C Dement, Mary A Carskadon
Study Objectives: Napping is a useful countermeasure to the negative effects of acute sleep loss on alertness. The efficacy of naps to recover from chronic sleep loss is less well understood. Methods: Following 2 baseline nights (10 hours' time-in-bed), participants were restricted to 7 nights of 5-hour sleep opportunity. Ten adults participated in the No-Nap condition, and a further 9 were assigned to a Nap condition with a daily 45-minute nap opportunity at 1300 h...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28934524/associations-of-sleep-duration-and-disturbances-with-hypertension-in-metropolitan-cities-of-delhi-chennai-and-karachi-in-south-asia-cross-sectional-analysis-of-the-carrs-study
#11
Roopa Shivashankar, Dimple Kondal, Mohammed K Ali, Ruby Gupta, Rajendra Pradeepa, Viswanathan Mohan, Muhammad Masood Kadir, K M Venkat Narayan, Nikhil Tandon, Dorairaj Prabhakaran, Anne Peasey
Objectives: Sleep duration and disturbances may be risk factors for hypertension. Despite the high burden of hypertension in South Asia, little is known about this relationship in this region. Methods: We analyzed population-level cross-sectional data from the Centre for Cardiometabolic Risk Reduction in South Asia (CARRS) study that recruited representative samples of adults ≥ 20 years from three cities-Delhi, Chennai (India), and Karachi (Pakistan) during 2010-2011...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28934523/sleep-stage-transition-dynamics-reveal-specific-stage-2-vulnerability-in-insomnia
#12
Yishul Wei, Michele A Colombo, Jennifer R Ramautar, Tessa F Blanken, Ysbrand D van der Werf, Kai Spiegelhalder, Bernd Feige, Dieter Riemann, Eus J W Van Someren
Study Objectives: Objective sleep impairments in insomnia disorder (ID) are insufficiently understood. The present study evaluated whether whole-night sleep stage dynamics derived from polysomnography (PSG) differ between people with ID and matched controls and whether sleep stage dynamic features discriminate them better than conventional sleep parameters. Methods: Eighty-eight participants aged 21-70 years, including 46 with ID and 42 age- and sex-matched controls without sleep complaints, were recruited through www...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28934522/effects-of-cannabinoid-agonists-and-antagonists-on-sleep-and-breathing-in-sprague-dawley-rats
#13
Michael W Calik, David W Carley
Study Objectives: There are no pharmacological treatments for obstructive sleep apnea syndrome, but dronabinol showed promise in a small pilot study. In anesthetized rats, dronabinol attenuates reflex apnea via activation of cannabinoid (CB) receptors located on vagal afferents; an effect blocked by cannabinoid type 1 (CB1) and/or type 2 (CB2) receptor antagonists. Here, using a natural model of central sleep apnea, we examine the effects of dronabinol, alone and in combination with selective antagonists in conscious rats chronically instrumented to stage sleep and measure cessation of breathing...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28934521/social-media-use-before-bed-and-sleep-disturbance-among-young-adults-in-the-united-states-a-nationally-representative-study
#14
Jessica C Levenson, Ariel Shensa, Jaime E Sidani, Jason B Colditz, Brian A Primack
Study Objectives: Social media (SM) use has been positively associated with disturbed sleep among young adults. However, previous studies have not elucidated the specific importance of SM use immediately before bed. We aimed to determine the independent association of SM use during the 30 minutes before bed and disturbed sleep while controlling for covariates including total SM use throughout the day. Methods: We assessed a nationally representative sample of 1763 US young adults aged 19-32...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28934520/damage-of-inner-ear-sensory-hair-cells-via-mitochondrial-loss-in-a-murine-model-of-sleep-apnea-with-chronic-intermittent-hypoxia
#15
Young Joon Seo, Hyun Mi Ju, Sun Hee Lee, Sang Hyun Kwak, Min Jung Kang, Joo-Heon Yoon, Chang-Hoon Kim, Hyung-Ju Cho
Study Objectives: Investigating the exact pathophysiology of obstructive sleep apnea syndrome (OSAS)-induced hearing loss is critical. We sought to verify the hypothesis that a correlation exists between mitochondrial dysfunction in inner ear hair cells and the auditory dysfunction induced by chronic intermittent hypoxia (CIH) in a murine model of sleep apnea. Methods: C57BL/6J adult male mice were randomized to 4 weeks of CIH (n = 12) or normoxia (Sham) (n = 12)...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28934376/managing-menopausal-symptoms-and-associated-clinical-issues-in-breast-cancer-survivors
#16
Richard J Santen, Cynthia A Stuenkel, Susan R Davis, JoAnn V Pinkerton, Anne Gompel, Mary Ann Lumsden
Objective: Review evidence to guide the management of menopausal signs and symptoms in women after breast cancer and make recommendations accordingly. Evidence: Randomized controlled clinical trials, observational studies, evidence- based guidelines, and expert opinion from professional societies. Background: Several symptoms and clinical problems associated with estrogen depletion -sleep disorders, vulvovaginal atrophy (VVA), vasomotor symptoms (VMS), mood changes, depressive symptoms, cardiovascular disease, osteopenia and osteoporosis- confront the estimated 9...
August 2, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28934303/characterization-of-the-cpap-treated-patient-population-in-catalonia
#17
Cecilia Turino, Sandra Bertran, Ricard Gavaldá, Ivan Teixidó, Holger Woehrle, Montserrat Rué, Francesc Solsona, Joan Escarrabill, Cristina Colls, Anna García-Altés, Jordi de Batlle, Manuel Sánchez de-la-Torre, Ferran Barbé
There are different phenotypes of obstructive sleep apnoea (OSA), many of which have not been characterised. Identification of these different phenotypes is important in defining prognosis and guiding the therapeutic strategy. The aim of this study was to characterise the entire population of continuous positive airway pressure (CPAP)-treated patients in Catalonia and identify specific patient profiles using cluster analysis. A total of 72,217 CPAP-treated patients who contacted the Catalan Health System (CatSalut) during the years 2012 and 2013 were included...
2017: PloS One
https://www.readbyqxmd.com/read/28933970/the-importance-of-calprotectin-levels-in-the-obstructive-sleep-apnea-syndrome-severity
#18
Mümtaz Taner Torun, Ethem Ünver, Yusuf Yalçın, Lutfi Kanmaz, Ender Seçkin
BACKGROUND: Obstructive sleep apnea syndrome (OSAS) is mostly seen in adult populations. It is known that increased levels of several inflammatory mediators play roles in OSAS and related comorbidities. Calprotectin is an inflammatory mediator that increases in some diseases such as Bechet's syndrome, bowel diseases and cardiovascular and cerebrovascular diseases. AIMS: The purpose of this study was to investigate whether calprotectin can be used as a biomarker in OSAS by determining the relation between the serum calprotectin levels and OSAS severity...
September 21, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28933896/the-effects-of-sleep-deprivation-on-item-and-associative-recognition-memory
#19
Roger Ratcliff, Hans P A Van Dongen
Sleep deprivation adversely affects the ability to perform cognitive tasks, but theories range from predicting an overall decline in cognitive functioning because of reduced stability in attentional networks to specific deficits in various cognitive domains or processes. We measured the effects of sleep deprivation on two memory tasks, item recognition ("was this word in the list studied") and associative recognition ("were these two words studied in the same pair"). These tasks test memory for information encoded a few minutes earlier and so do not address effects of sleep deprivation on working memory or consolidation after sleep...
September 21, 2017: Journal of Experimental Psychology. Learning, Memory, and Cognition
https://www.readbyqxmd.com/read/28933879/sleep-problems-in-preschoolers-and-maternal-depressive-symptoms-an-evaluation-of-mother-and-child-driven-effects
#20
Hilde Ystrom, Wendy Nilsen, Mari Hysing, Børge Sivertsen, Eivind Ystrom
Child sleep problems are associated with maternal depressive symptoms. It is unclear to what extent the association is due to direct effects or common risk factors for mother and child. Direct effects could represent child-driven processes, where child sleep problems influence maternal depressive symptoms, or mother-driven processes, where maternal depressive symptoms influence child sleep problems. Common factors could be shared genetic and familial environmental risk. Child- and mother-driven processes are direct in the sense that they are not due to common factors...
September 21, 2017: Developmental Psychology
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