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https://www.readbyqxmd.com/read/29145507/light-sensors-for-objective-light-measurement-in-ambulatory-polysomnography
#1
Rachel Schembri, Jo Spong, Allison Peters, Peter Rochford, Philip Wilksch, Fergal J O'Donoghue, Kenneth M Greenwood, Maree Barnes, Gerard A Kennedy, David J Berlowitz
Ambulatory polysomnography (PSG) does not commonly include an objective measure of light to determine the time of lights off (Loff), and thus cannot be used to calculate important indices such as sleep onset latency and sleep efficiency. This study examined the technical specifications and appropriateness of a prototype light sensor (LS) for use in ambulatory Compumedics Somte PSG.Two studies were conducted. The first examined the light measurement characteristics of the LS when used with a portable PSG device, specifically recording trace range, linearity, sensitivity, and stability...
2017: PloS One
https://www.readbyqxmd.com/read/29145494/global-analysis-of-gene-expression-mediated-by-ox1-orexin-receptor-signaling-in-a-hypothalamic-cell-line
#2
Eric Koesema, Thomas Kodadek
The orexins and their cognate G-protein coupled receptors have been widely studied due to their associations with various behaviors and cellular processes. However, the detailed downstream signaling cascades that mediate these effects are not completely understood. We report the generation of a neuronal model cell line that stably expresses the OX1 orexin receptor (OX1) and an RNA-Seq analysis of changes in gene expression seen upon receptor activation. Upon treatment with orexin, several families of related transcription factors are transcriptionally regulated, including the early growth response genes (Egr), the Kruppel-like factors (Klf), and the Nr4a subgroup of nuclear hormone receptors...
2017: PloS One
https://www.readbyqxmd.com/read/29145440/the-relationship-between-shift-work-and-mental-health-among-electronics-workers-in-south-korea-a-cross-sectional-study
#3
Mo-Yeol Kang, Ho-Jang Kwon, Kyung-Hwa Choi, Chung-Won Kang, Hyunjoo Kim
OBJECTIVE: To determine the relationship between shift work and mental health, particularly insomnia, depression, and suicidal ideation, among electronics production workers. METHODS: A survey was conducted with 14,226 workers from an electronics manufacturer in South Korea. After excluding 112 individuals with incomplete responses, 14,114 respondents were analyzed. As part of a larger project, we collected data on respondents' general characteristics, work-related characteristics, and health status; however, in this study, we focused on the data related to shift work and mental health...
2017: PloS One
https://www.readbyqxmd.com/read/29145409/predictors-of-suicide-ideation-among-older-adults-with-bipolar-disorder
#4
Norm O'Rourke, Marnin J Heisel, Sarah L Canham, Andrew Sixsmith
OBJECTIVES: Bipolar disorder (BD) carries the greatest risk of death by suicide of all psychiatric conditions as 25%-50% of those with BD will make one or more suicide attempt, and about 15% will intentionally end their lives. Among young adults with BD, substance misuse, medication non-adherence, age at onset, and comorbid psychiatric conditions each predict self-harm. It is currently unclear if these same factors or others predict suicide ideation among older adults with BD. METHODS: We recruited a global sample of 220 older adults with BD over 19 days using socio-demographically targeted, social media advertising and online data collection (Mean = 58...
2017: PloS One
https://www.readbyqxmd.com/read/29145189/rem-sleep-behavior-disorder
#5
Claudio L Bassetti, Panagiotis Bargiotas
Rapid eye movement sleep behavior disorder (RBD) is a brain disorder, characterized by the dream enactment during rapid eye movement (REM) sleep due to a lack of physiologic muscle atonia and increased muscle twitching. Schenk was the first to describe this disorder in 1986; however, few authors reported in the 1970-1980s loss of physiological muscle atonia combined with dream enactment in the course of brainstem disorders and as a consequence of alcoholism and antidepressant treatment. RBD affects less than 1% of the adult population, but can be found in up to 25-50% of neurodegenerative disorders including Parkinson's disease, multisystem atrophy, and dementia with Lewy body...
2018: Frontiers of Neurology and Neuroscience
https://www.readbyqxmd.com/read/29145148/honokiol-protects-pancreatic-%C3%AE-cell-against-high-glucose-and-intermittent-hypoxia-induced-injury-by-activating-nrf2-are-pathway-in-vitro-and-in-vivo
#6
Chen-Guang Li, Chang-Lin Ni, Min Yang, Yun-Zhao Tang, Zhu Li, Yan-Juan Zhu, Zhen-Huan Jiang, Bei Sun, Chun-Jun Li
Obstructive sleep apnea hypopnea syndrome (OSAHS) is associated with glucose intolerance, insulin resistance and type 2 diabetes mellitus (T2DM). Although several studies have revealed that intermittent hypoxia (IH) in OSAHS may further aggravate pancreatic β cell damage and promote the evolution of type 2 diabetes (T2DM) by increasing oxidative stress, the underlying mechanisms are unclear. Honokiol, a potent radical scavenger, has been demonstrated to ameliorate oxidative stress in many cases. The present study aimed to explore the potential mechanism of IH and diabetes synergistically damage and destruct the pancreatic β cell, examine the effects of honokiol on ameliorating pancreatic β cell injury in this context and explore the mechanism of such effects...
November 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29145007/sleep-preserves-original-and-distorted-memory-traces
#7
Scott A Cairney, Shane Lindsay, Ken A Paller, M Gareth Gaskell
Retrieval facilitates the long-term retention of memories, but may also enable stored representations to be updated with new information that is available at the time of retrieval. However, if information integrated during retrieval is erroneous, future recall can be impaired: a phenomenon known as retrieval-induced distortion (RID). Whether RID causes an "overwriting" of existing memory traces or leads to the co-existence of original and distorted memory traces is unknown. Because sleep enhances memory consolidation, the effects of sleep after RID can provide novel insights into the structure of updated memories...
October 16, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29144628/overactive-bladder-syndrome-and-bladder-wall-thickness-in-patients-with-obstructive-sleep-apnea-syndrome
#8
Zahide Yilmaz, Bekir Voyvoda, Pinar Bekdik Şirinocak
OBJECTIVE: The main objective of the present study was to evaluate the presence of overactive bladder (OAB) syndrome, nocturia, urgency, and urge incontinence in patients with obstructive sleep apnea syndrome (OSAS), and measure bladder wall thickness (BWT) in these patients. MATERIALS AND METHODS: The patient group was composed of 38 patients with OSAS. The control group was composed of 15 healthy individuals. All patients were evaluated using the Epworth Sleepiness Scale (ESS) and Overactive Bladder Symptom Score (OABSS)...
November 19, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/29144513/predictors-of-heart-rhythm-disturbances-in-hypertensive-obese-patients-with-obstructive-sleep-apnea
#9
Lyudmila Sergeevna Korostovtseva, Nadezhda Edvinovna Zvartau, Oxana Petrovna Rotar, Yurii Vladimirovich Sviryaev, Aleksandra Olegovna Konradi
Objective: To assess the incidence and predictors of heart rhythm and conduction disturbances in hypertensive obese patients with and without obstructive sleep apnea (OSA). Methods: This is an open, cohort, prospective study. Out of 493 screened patients, we selected 279 hypertensive, obese individuals without severe concomitant diseases: 75 patients without sleep-disordered breathing (non-SDB group), and 204 patients with OSA (OSA group). At baseline, all patients underwent examination, including ECG, Holter ECG monitoring, and sleep study...
September 2017: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/29144185/rest-activity-circadian-rhythm-and-sleep-quality-in-patients-with-binge-eating-disorder
#10
E Roveda, A Montaruli, L Galasso, C Pesenti, E Bruno, P Pasanisi, M Cortellini, S Rampichini, S Erzegovesi, A Caumo, F Esposito
Recent findings suggest that altered rest-activity circadian rhythms (RARs) are associated with a compromised health status. RARs abnormalities have been observed also in several pathological conditions, such as cardiovascular, neurological, and cancer diseases. Binge eating disorder (BED) is the most common eating disorder, with a prevalence of 3.5% in women and 2% in men. BED and its associate obesity and motor inactivity could induce RARs disruption and have negative consequences on health-related quality of life...
November 16, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29144173/chronotype-regulates-the-neural-basis-of-response-inhibition-during-the-daytime
#11
Jingjing Song, Pan Feng, Xiaoyue Zhao, Wenjian Xu, Lijuan Xiao, Jia Zhou, Yong Zheng
Studies have elucidated the various modulatory effects of chronotype and time-of-day on task-dependent brain activity, but it is unclear how chronotype and time-of-day regulate brain activity in response inhibition tasks. To address this question, we used functional magnetic resonance imaging (fMRI) to explore the effects of chronotype and time-of-day on response inhibition in normal day-night conditions. Morning-type (MT) and evening-type (ET) participants conducted the stop-signal task in morning (08:00-12:00 hours) and evening (19:00-23:00 hours) sessions...
November 16, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29144172/disruptions-in-sleep-wake-cycles-in-community-dwelling-cancer-patients-receiving-palliative-care-and-their-correlates
#12
Marie Solange Bernatchez, Josée Savard, Hans Ivers
Significant disruptions in sleep-wake cycles have been found in advanced cancer patients in prior research. However, much remains to be known about specific sleep-wake cycle variables that are impaired in patients with a significantly altered performance status. More studies are also needed to explore the extent to which disrupted sleep-wake cycles are related to physical and psychological symptoms, time to death, maladaptive sleep behaviors, quality of life and 24-h light exposure. This study conducted in palliative cancer patients was aimed at characterizing patients' sleep-wake cycles using various circadian parameters (i...
November 16, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29144169/bright-light-exposure-during-daytime-sleeping-affects-nocturnal-melatonin-secretion-after-simulated-night-work
#13
Shunsuke Nagashima, Madoka Osawa, Hiroto Matsuyama, Wataru Ohoka, Aemi Ahn, Tomoko Wakamura
The guidelines for night and shift workers recommend that after night work, they should sleep in a dark environment during the daytime. However, staying in a dark environment during the daytime reduces nocturnal melatonin secretion and delays its onset. Daytime bright-light exposure after night work is important for melatonin synthesis the subsequent night and for maintaining the circadian rhythms. However, it is not clear whether daytime sleeping after night work should be in a dim- or a bright-light environment for maintaining melatonin secretion...
November 16, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29144168/the-effects-of-extended-nap-periods-on-cognitive-physiological-and-subjective-responses-under-simulated-night-shift-conditions
#14
Jonathan Davy, Matthias Göbel
Extended nap opportunities have been effective in maintaining alertness in the context of extended night shifts (+12 h). However, there is limited evidence of their efficacy during 8-h shifts. Thus, this study explored the effects of extended naps on cognitive, physiological and perceptual responses during four simulated, 8-h night shifts. In a laboratory setting, 32 participants were allocated to one of three conditions. All participants completed four consecutive, 8-h night shifts, with the arrangements differing by condition...
November 16, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29144155/proposal-of-cutoff-points-for-pediatric-daytime-sleepiness-scale-to-identify-excessive-daytime-sleepiness
#15
Carolina Meyer, Diego Grasel Barbosa, Geraldo Jose Ferrari Junior, Rubian Diego Andrade, Diego Augusto Santos Silva, Andreia Pelegrini, Érico Pereira Gomes Felden
The objective of the present study was to propose cutoff points for the Pediatric Daytime Sleepiness Scale (PDSS) through sensitivity and specificity analyses in order to identify excessive daytime sleepiness, considering parameters such as duration and quality of sleep, health perception, stress control and depressive moods (feelings of sadness) in adolescents. A total of 1,132 adolescents, aged 14-19 years old, of both sexes, from the public high school of São José - SC, answered the questionnaire with information on age, daytime sleepiness, sleep duration, health perception, stress management, depressive moods (feelings of sadness) and quality of sleep...
November 16, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29144154/sleep-quality-and-methylation-status-of-selected-tumor-suppressor-genes-among-nurses-and-midwives
#16
Agnieszka Bukowska-Damska, Edyta Reszka, Pawel Kaluzny, Edyta Wieczorek, Monika Przybek, Shanbeh Zienolddiny, Beata Peplonska
Chronic sleep restriction may affect metabolism, hormone secretion patterns and inflammatory responses. Limited reports suggest also epigenetic effects, such as changes in DNA methylation profiles. The study aims to assess the potential association between poor sleep quality or sleep duration and the levels of 5-methylcytosine in the promoter regions of selected tumor suppressor genes. A cross-sectional study was conducted on 710 nurses and midwives aged 40-60 years. Data from interviews regarding sleep habits and potential confounders were used...
November 16, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29143576/a-nationwide-study-of-health-related-quality-of-life-stress-pain-or-discomfort-and-the-use-of-medicine-among-problem-gamblers
#17
Ola Ekholm, Michael Davidsen, Christina Viskum Lytken Larsen, Knud Juel
AIM: The aim of this study was to investigate the associations between problem gambling and health-related quality of life, stress, pain or discomfort and the use of analgesics and sleeping pills. METHODS: Data derives from the Danish Health and Morbidity Survey 2010. The survey was based on a random sample of 25,000 adult Danes (response rate: 61%), and data were collected via a self-administered questionnaire. The Lie/Bet Questionnaire was used as the screening instrument for problem gambling...
November 1, 2017: Scandinavian Journal of Public Health
https://www.readbyqxmd.com/read/29143316/psychometric-properties-of-parent-and-child-reported-sleep-assessment-tools-in-children-with-cerebral-palsy-a-systematic-review
#18
REVIEW
Manuel Bautista, Koa Whittingham, Priya Edwards, Roslyn N Boyd
AIM: To determine whether any parent and child report sleep measure tools have been validated in children aged 0-18 years with cerebral palsy (CP). METHOD: A systematic search of five databases was performed up to June 2017. Studies were included if a sleep measure tool was used to evaluate sleep in children 0-18 years with CP based on international classifications of sleep. Sleep measures were assessed for psychometric data in children with CP. RESULTS: Only one paper which used the Schlaffragebogen für Kinder mit Neurologischen und Anderen Komplexen Erkrankungen (SNAKE) questionnaire met the study criteria...
November 16, 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/29143127/decreased-serum-vitamin-b12-and-vitamin-d-levels-affect-sleep-quality-in-children-with-familial-mediterranean-fever
#19
Rabia Miray Kisla Ekinci, Sibel Balci, Mahir Serbes, Dilek Dogruel, Derya Ufuk Altintas, Mustafa Yilmaz
Familial Mediterranean fever is an autoinflammatory disorder characterized by recurrent fever and serositis. We aimed to describe serum vitamin B12 and vitamin D levels and their correlation with self-reported sleep quality of pediatric FMF patients. Sixty-three children with FMF were enrolled to the study. Information on sleep quality was obtained using self-administration of Pittsburg Sleep Quality Index (PSQI). The patients were divided into subgroups depending on vitamin D serum concentrations: ≥ 20 and < 20 ng/ml...
November 15, 2017: Rheumatology International
https://www.readbyqxmd.com/read/29142787/sleep-apnea-symptoms-and-cardiovascular-disease-risks-among-haitian-medical-students
#20
Diana M Rosenthal, Donaldson F Conserve, Dodley Severe, Michaele A Gedeon, Ferdinand Zizi, Georges Casimir, Samy I McFarlane, Girardin Jean Louis
Sleep apnea is a prevalent sleep disorder that disproportionately affects blacks and has been previously studied among Caribbean-born blacks in Brooklyn, New York, but there has been negligible research in the Caribbean, specifically Haiti, and developing countries on this pressing health issue. A total of 373 medical students (mean age=20.6 years ± 2.3 years) from a medical school in Haiti participated in this study. Participants were administered a questionnaire assessing their sleep health and cardiovascular outcomes...
April 2017: Journal of Sleep Disorders & Therapy
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