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https://www.readbyqxmd.com/read/28732130/abnormalities-in-the-24-hour-rhythm-of-skin-temperature-in-cirrhosis-sleep-wake-and-general-clinical-implications
#1
Maria Garrido, Desy Saccardo, Michele De Rui, Elia Vettore, Alberto Verardo, Paolo Carraro, Nicola Di Vitofrancesco, Ali R Mani, Paolo Angeli, Massimo Bolognesi, Sara Montagnese
BACKGROUND & AIMS: Sleep preparation/onset are associated with peripheral vasodilatation and a decrease in body temperature. The hyperdynamic syndrome exhibited by patients with cirrhosis may impinge on sleep preparation, thus contributing to their difficulties falling asleep. The aim of this study was the assessment of skin temperature, in relation to sleep-wake patterns, in patients with cirrhosis. METHODS: Fifty three subjects were initially recruited, and 46 completed the study...
July 21, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28731611/energy-drink-consumption-is-associated-with-reduced-sleep-quality-among-college-students-a-cross-sectional-study
#2
Mo'ez Al-Islam E Faris, Haitham Jahrami, Marwa M Al-Hilali, Noor J Chehyber, Sara O Ali, Sara D Shahda, Reyad S Obaid
AIM: Intake of caffeinated energy drinks has significantly increased, specifically among young adults and adolescents. College students are prone to developing unhealthy eating habits and dependence on stimulants, which puts them at a greater risk of sleep problems. This study aims to investigate the prevalence of caffeinated energy drink consumption and its association with sleep quality in college students. METHODS: A sample of 919 randomly selected adults (237 males and 682 females) from various colleges at the University of Sharjah/United Arab Emirates participated in this cross-sectional study...
July 2017: Nutrition & Dietetics: the Journal of the Dietitians Association of Australia
https://www.readbyqxmd.com/read/28729144/sleep-efficiency-modulates-associations-between-family-stress-and-adolescent-depressive-symptoms-and-negative-affect
#3
Jessica J Chiang, Joanna J Kim, David M Almeida, Julienne E Bower, Ronald E Dahl, Michael R Irwin, Heather McCreath, Andrew J Fuligni
PURPOSE: The goal of this study was to determine whether sleep moderates the associations between family-related stress and depressive symptoms and negative affect outcomes during adolescence. We combined traditional survey measures of stress and depressive symptoms with daily assessments of stress and negative affect to examine whether sleep differentially impacts the link between chronic and acute experiences of stress and affect. METHODS: Participants were 316 adolescents from ethnically diverse backgrounds...
July 17, 2017: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/28726307/naturally-occurring-circadian-rhythm-and-sleep-duration-are-related-to-executive-functions-in-early-adulthood
#4
Liisa Kuula, Anu-Katriina Pesonen, Kati Heinonen, Eero Kajantie, Johan Gunnar Eriksson, Sture Andersson, Aulikki Lano, Jari Lahti, Dieter Wolke, Katri Räikkönen
Experimental sleep deprivation studies suggest that insufficient sleep and circadian misalignment associates with poorer executive function. It is not known whether this association translates to naturally occurring sleep patterns. A total of 512 of full-term-born members of the Arvo Ylppö Longitudinal Study [mean age = 25.3, standard deviation (SD) = 0.65] (44.3% men) wore actigraphs to define sleep duration, its irregularity and circadian rhythm (sleep mid-point) during a 1-week period (mean 6.9 nights, SD = 1...
July 20, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28724928/on-wakefulness-fluctuations-as-a-source-of-bold-functional-connectivity-dynamics
#5
Ariel Haimovici, Enzo Tagliazucchi, Pablo Balenzuela, Helmut Laufs
Human brain dynamics and functional connectivity fluctuate over a range of temporal scales in coordination with internal states and environmental demands. However, the neurobiological significance and consequences of functional connectivity dynamics during rest have not yet been established. We show that the coarse-grained clustering of whole-brain dynamic connectivity measured with magnetic resonance imaging reveals discrete patterns (dynamic connectivity states) associated with wakefulness and sleep. We validate this using EEG in healthy subjects and patients with narcolepsy and by matching our results with previous findings in a large collaborative database...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28724246/health-consequences-of-electric-lighting-practices-in-the-modern-world-a-report-on-the-national-toxicology-program-s-workshop-on-shift-work-at-night-artificial-light-at-night-and-circadian-disruption
#6
REVIEW
Ruth M Lunn, David E Blask, Andrew N Coogan, Mariana G Figueiro, Michael R Gorman, Janet E Hall, Johnni Hansen, Randy J Nelson, Satchidananda Panda, Michael H Smolensky, Richard G Stevens, Fred W Turek, Roel Vermeulen, Tania Carreón, Claire C Caruso, Christina C Lawson, Kristina A Thayer, Michael J Twery, Andrew D Ewens, Sanford C Garner, Pamela J Schwingl, Windy A Boyd
The invention of electric light has facilitated a society in which people work, sleep, eat, and play at all hours of the 24-hour day. Although electric light clearly has benefited humankind, exposures to electric light, especially light at night (LAN), may disrupt sleep and biological processes controlled by endogenous circadian clocks, potentially resulting in adverse health outcomes. Many of the studies evaluating adverse health effects have been conducted among night- and rotating-shift workers, because this scenario gives rise to significant exposure to LAN...
July 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28721695/myopes-have-significantly-higher-serum-melatonin-concentrations-than-non-myopes
#7
Stephanie Kearney, Lisa O'Donoghue, Kirsty L Pourshahidi, Diego Cobice, Kathryn J Saunders
PURPOSE: Experimental animal models of myopia demonstrate that higher melatonin (Mel) and lower dopamine (DA) concentrations actively promote axial elongation. This study explored the association between myopia and serum concentrations of DA and Mel in humans. METHODS: Morning serum concentrations of DA and Mel were measured by solid phase extraction-liquid chromatography-tandem mass spectrometry from 54 participants (age 19.1 ± 0.81 years) in September/October 2014 (phase 1) and March/April 2016 (phase 2)...
July 18, 2017: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/28721053/reduced-prefrontal-activation-during-verbal-fluency-task-in-chronic-insomnia-disorder-a-multichannel-near-infrared-spectroscopy-study
#8
Jing-Jing Sun, Xiao-Min Liu, Chen-Yu Shen, Xiao-Qian Zhang, Gao-Xiang Sun, Kun Feng, Bo Xu, Xia-Jin Ren, Xiang-Yun Ma, Po-Zi Liu
PURPOSE: Daytime complaints such as memory and attention deficits and failure to accomplish daily tasks are common in insomnia patients. However, objective psychological tests to detect cognitive impairment are equivocal. Neural function associated with cognitive performance may explain the discrepancy. The aim of this study was to investigate the hemodynamic response patterns of patients with chronic insomnia disorder (CID) using the noninvasive and low-cost functional neuroimaging technique of multichannel near-infrared spectroscopy (NIRS) in order to identify changes of neural function associated with cognitive performance...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28720787/comparison-between-an-african-town-and-a-neighbouring-village-shows-delayed-but-not-decreased-sleep-during-the-early-stages-of-urbanisation
#9
Andrew D Beale, Mario Pedrazzoli, Bruno da Silva B Gonçalves, Felipe Beijamini, Núbia E Duarte, Kieren J Egan, Kristen L Knutson, Malcolm von Schantz, Laura C Roden
The well-established negative health outcomes of sleep deprivation, and the suggestion that availability of electricity may enable later bed times without compensating sleep extension in the morning, have stimulated interest in studying communities whose sleep pattern may resemble a pre-industrial state. Here, we describe sleep and activity in two neighbouring communities, one urban (Milange) and one rural (Tengua), in a region of Mozambique where urbanisation is an ongoing process. The two communities differ in the amount and timing of daily activity and of light exposure, with later bedtimes (≈1 h) associated with more evening and less daytime light exposure seen in the town of Milange...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720670/symptom-clusters-and-quality-of-life-in-subjects-with-copd
#10
Kyeung Eun Lim, Sung Reul Kim, Hyun Kyung Kim, So Ri Kim
BACKGROUND: COPD is one of the most common respiratory diseases. Patients with COPD experience and suffer from various physical and psychological symptoms. We performed this study to identify symptom clusters and the effects on quality of life (QOL) in patients with COPD. METHODS: A total of 130 COPD subjects were recruited from a university hospital in South Korea. Dyspnea, fatigue, depression, anxiety, sleep disturbance, dry mouth, and physical functional status were assessed with structured questionnaires...
July 18, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28720290/how-to-improve-sleep-in-a-neonatal-intensive-care-unit-a-systematic-review
#11
Agnes van den Hoogen, Charlotte J Teunis, Renée A Shellhaas, Sigrid Pillen, Manon Benders, Jeroen Dudink
There is increasing evidence that sleep plays a major role in the development of neural pathways in the neonatal brain. Several studies have suggested evidence-based approaches to improve sleep for infants admitted to the neonatal intensive care unit (NICU); however, in many neonatal centers very few of these strategies seem to be implemented in routine care. OBJECTIVE: To systematically review the literature to determine interventions promoting neonatal sleep on the NICU, in order to develop key guidelines to improve neonatal sleep...
July 15, 2017: Early Human Development
https://www.readbyqxmd.com/read/28717529/daily-variation-in-the-occurrence-of-different-subtypes-of-stroke
#12
Luciana Ripamonti, Roberto Riva, Fabiola Maioli, Corrado Zenesini, Gaetano Procaccianti
Three thousand two hundred and ninety-eight patients admitted to our Stroke Unit with hemorrhagic, large artery atherosclerosis, cardioembolic, small-vessel occlusion, and undetermined etiology-cryptogenic strokes were included in the study. The circadian variability in onset in each stroke subgroup and the associations with various risk factors were analyzed. In each subgroup, a significant minority of patients suffered from stroke during sleep. In the ischemic group, hypercholesterolemia, paroxysmal atrial fibrillation, and previous myocardial infarction facilitated the onset during waking...
2017: Stroke Research and Treatment
https://www.readbyqxmd.com/read/28715993/metabolic-effects-of-intermittent-fasting
#13
Ruth E Patterson, Dorothy D Sears
The objective of this review is to provide an overview of intermittent fasting regimens, summarize the evidence on the health benefits of intermittent fasting, and discuss physiological mechanisms by which intermittent fasting might lead to improved health outcomes. A MEDLINE search was performed using PubMed and the terms "intermittent fasting," "fasting," "time-restricted feeding," and "food timing." Modified fasting regimens appear to promote weight loss and may improve metabolic health. Several lines of evidence also support the hypothesis that eating patterns that reduce or eliminate nighttime eating and prolong nightly fasting intervals may result in sustained improvements in human health...
July 17, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28714795/analysis-of-physical-activity-among-free-living-nonagenarians-from-a-sardinian-longevous-population
#14
Giovanni Mario Pes, Maria Pina Dore, Alessandra Errigo, Michel Poulain
Physical activity was identified as a major determinant of longevity. Using wearable accelerometers, we evaluated energy expenditure (EE), including resting- (REE) and total-energy expenditure, (TEE), physical activity level (PAL), percentage of PAL ≥ 3 metabolic equivalent tasks (METs), number of steps, resting index (RI%) and sleeping patterns in 44 free-living nonagenarians (27 men) residing in a Sardinian village famous for its longevous population. The average REE and TEE recorded were: men 1278 ± 161 kcal/day and 957 ± 110, and women: 2286 ± 541kcal/day and 1811 ± 308 in the women, respectively...
July 17, 2017: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/28713258/relationship-of-topology-multiscale-phase-synchronization-and-state-transitions-in-human-brain-networks
#15
Minkyung Kim, Seunghwan Kim, George A Mashour, UnCheol Lee
How the brain reconstitutes consciousness and cognition after a major perturbation like general anesthesia is an important question with significant neuroscientific and clinical implications. Recent empirical studies in animals and humans suggest that the recovery of consciousness after anesthesia is not random but ordered. Emergence patterns have been classified as progressive and abrupt transitions from anesthesia to consciousness, with associated differences in duration and electroencephalogram (EEG) properties...
2017: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/28712063/resisting-sleep-pressure-impact-on-resting-state-functional-network-connectivity
#16
Laura Tüshaus, Joshua Henk Balsters, Anthony Schläpfer, Daniel Brandeis, Ruth O'Gorman Tuura, Peter Achermann
In today's 24/7 society, sleep restriction is a common phenomenon which leads to increased levels of sleep pressure in daily life. However, the magnitude and extent of impairment of brain functioning due to increased sleep pressure is still not completely understood. Resting state network (RSN) analyses have become increasingly popular because they allow us to investigate brain activity patterns in the absence of a specific task and to identify changes under different levels of vigilance (e.g. due to increased sleep pressure)...
July 15, 2017: Brain Topography
https://www.readbyqxmd.com/read/28711423/randomized-trial-of-intelligent-sensor-system-for-early-illness-alerts-in-senior-housing
#17
Marilyn Rantz, Lorraine J Phillips, Colleen Galambos, Kari Lane, Gregory L Alexander, Laurel Despins, Richelle J Koopman, Marjorie Skubic, Lanis Hicks, Steven Miller, Andy Craver, Bradford H Harris, Chelsea B Deroche
OBJECTIVES: Measure the clinical effectiveness and cost effectiveness of using sensor data from an environmentally embedded sensor system for early illness recognition. This sensor system has demonstrated in pilot studies to detect changes in function and in chronic diseases or acute illnesses on average 10 days to 2 weeks before usual assessment methods or self-reports of illness. DESIGN: Prospective intervention study in 13 assisted living (AL) communities of 171 residents randomly assigned to intervention (n=86) or comparison group (n=85) receiving usual care...
July 12, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28711234/sleep-related-breathing-disorders-and-indications-for-polysomnography-in-preterm-infants
#18
Koen Joosten, Robbin de Goederen, Angelique Pijpers, Karel Allegaert
There is a range of breathing problems which occur and may persist in preterm infants, such as central apneas, obstructive apneas and periodic breathing. Preterm infants may also suffer from respiratory distress syndrome and chronic lung disease necessitating prolonged use of oxygen therapy after discharge from the hospital. Due to these persistent breathing pattern abnormalities in preterm infants, there is a higher risk of altered sleep and apparent life threatening events. Polysomnography can be a helpful tool to identify those infants who have abnormalities in their breathing pattern, to identify those infants who have an increased risk to get a sleep related breathing event at home and to decide about the discontinuation of oxygen therapy...
July 12, 2017: Early Human Development
https://www.readbyqxmd.com/read/28711233/review-of-sleep-eeg-in-preterm-and-term-neonates
#19
Anneleen Dereymaeker, Kirubin Pillay, Jan Vervisch, Maarten De Vos, Sabine Van Huffel, Katrien Jansen, Gunnar Naulaers
Neonatal sleep is a crucial state that involves endogenous driven brain activity, important for neuronal survival and guidance of brain networks. Sequential EEG-sleep analysis in preterm infants provides insights into functional brain integrity and can document deviations of the biologically pre-programmed process of sleep ontogenesis during the neonatal period. Visual assessment of neonatal sleep-EEG, with integration of both cerebral and non-cerebral measures to better define neonatal state, is still considered the gold standard...
July 12, 2017: Early Human Development
https://www.readbyqxmd.com/read/28709745/personal-sleep-pattern-visualization-using-sequence-based-kernel-self-organizing-map-on-sound-data
#20
Hongle Wu, Takafumi Kato, Tomomi Yamada, Masayuki Numao, Ken-Ichi Fukui
We propose a method to discover sleep patterns via clustering of sound events recorded during sleep. The proposed method extends the conventional self-organizing map algorithm by kernelization and sequence-based technologies to obtain a fine-grained map that visualizes the distribution and changes of sleep-related events. We introduced features widely applied in sound processing and popular kernel functions to the proposed method to evaluate and compare performance. The proposed method provides a new aspect of sleep monitoring because the results demonstrate that sound events can be directly correlated to an individual's sleep patterns...
July 11, 2017: Artificial Intelligence in Medicine
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