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https://www.readbyqxmd.com/read/30098543/the-relationship-between-night-eating-symptoms-and-disordered-eating-attitudes-via-insomnia-and-chronotype-differences
#1
Ali Kandeger, Umran Egilmez, Ayca A Sayin, Yavuz Selvi
Humans' sleep timing and the psychological construct "diurnal preference" determines their "chronotype" (i.e., morning or evening type). Diurnal preferences can affect sleep-awake rhythms and eating behaviors. Our aim in this study was to examine the relationship between night eating symptoms and disordered eating attitudes by evaluating insomnia and chronotype differences in university students. The participants, 383 university students, filled out a package of psychological tools, including the Morningness-Eveningness Questionnaire, the Insomnia Severity Index, the Night Eating Questionnaire, and the Eating Attitude Test...
August 2, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/30084652/short-term-time-restricted-feeding-during-the-resting-phase-is-sufficient-to-induce-leptin-resistance-that-contributes-to-development-of-obesity-and-metabolic-disorders-in-mice
#2
Katsutaka Oishi, Chiaki Hashimoto
Feeding at unusual times of the day is thought to be associated with obesity and metabolic disorders in both experimental animals and humans. We previously reported that time-imposed feeding during the sleep phase (daytime feeding, DF) induces obesity and metabolic disorders compared with mice fed only during the active phase (nighttime feeding, NF). The present study aimed to determine whether leptin resistance is caused by DF, and whether it is involved in the underlying mechanisms of DF-induced obesity in mice, since leptin plays an essential role in regulating energy expenditure and adiposity in addition to food intake...
August 7, 2018: Chronobiology International
https://www.readbyqxmd.com/read/30083814/circadian-rhythm-disturbances-in-the-blind
#3
REVIEW
Sarah Hartley, Yves Dauvilliers, Maria-Antonia Quera-Salva
PURPOSE OF REVIEW: Sleep timing, quantity, and quality are controlled by homeostatic and circadian systems. Circadian clock systems are present in all cells and organs and their timing is determined by a transcriptional-translational feedback loop of circadian genes. Individual cellular clocks are synchronized by the central body clock, situated in the suprachiasmatic nucleus, which communicates with them through humoral and neural signals including melatonin. The circadian system controls both the circadian period: (i...
August 6, 2018: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/30059043/noninvasive-eeg-recordings-from-freely-moving-piglets
#4
Nora V de Camp, Silke Dietze, Markus Klaßen, Jürgen Bergeler
The method allows the recording of high-quality electroencephalograms (EEGs) from freely moving piglets directly in the pigpen. We use a one-channel telemetric electroencephalography system in combination with standard self-adhesive hydrogel electrodes. The piglets are calmed down without the use of sedatives. After their release into the pigpen, the piglets behave normally-they drink and sleep in the same cycle as their siblings. Their sleep phases are used for the EEG recordings.
July 13, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29969899/daily-consumption-of-bilberry-vaccinium-myrtillus-l-extracts-increases-the-absorption-rate-of-anthocyanins-in-rats
#5
Chiaki Nohara, Daigo Yokoyama, Wataru Tanaka, Tetsuya Sogon, Masanobu Sakono, Hiroyuki Sakakibara
The effects of daily consumption of anthocyanins on bioavailability has remained unclear. In this study, we evaluated whether daily consumption affects the absorption rate of anthocyanins in rats when consumed during the active and sleep phase. Eighty rats were randomly divided into two groups. The first group consumed AIN-93G control diets, and the second group consumed AIN-93G diets containing 1% bilberry extract for 2 weeks. After 12 h fast, anthocyanins were not detected in plasma of rats. Bilberry extract (500 mg/kg body weight) was then orally administered at the beginning of the diurnal light period (ZT0, sleep phase) or at the end of the diurnal light period (ZT12, active phase)...
August 1, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29928151/a-rare-case-of-rem-sleep-related-bradyarrhythmia-syndrome-with-concomitant-severe-hypertension-a-case-report-and-a-review-of-literature
#6
Gabrielius Jakutis, Vytautas Juknevičius, Juratė Barysienė, Dalia Matačiūnienė, Birutė Petrauskienė, Žaneta Petrulionienė, Aleksandras Laucevičius
Introduction: Rapid eye movement (REM) sleep-related bradyarrhythmia syndrome is characterized by pathological asystoles during the REM sleep phase. It is a rare rhythm disorder, being reported only few times in the literature. Due to non-specific symptoms, REM sleep-related bradyarrhythmia might be often underdiagnosed. Other cardiac diseases associated with pathological sinus arrests must be excluded to establish the correct diagnosis of and appropriate therapy for REM sleep-related bradyarrhythmia...
2018: Acta Medica Lituanica
https://www.readbyqxmd.com/read/29925863/social-jetlag-impairs-balance-control
#7
Guilherme Silva Umemura, João Pedro Pinho, Bruno da Silva Brandão Gonçalves, Fabianne Furtado, Arturo Forner-Cordero
We assessed the impact of a common sleep disturbance, the social jetlag, on postural control during a period involving workdays and free days. The sleep habits of 30 healthy subjects were registered with a wrist actimeter for nine days (starting on Friday) and they participated in a set of four postural control tests carried out on Friday and on Monday. In addition, the subjects filled questionnaires about their sleep conditions and preferences. Actimetry measurements were used to calculate the Mid Sleep Phase (MSP)...
June 20, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29905797/crucial-role-for-nox2-and-sleep-deprivation-in-aircraft-noise-induced-vascular-and-cerebral-oxidative-stress-inflammation-and-gene-regulation
#8
Swenja Kröller-Schön, Andreas Daiber, Sebastian Steven, Matthias Oelze, Katie Frenis, Sanela Kalinovic, Axel Heimann, Frank P Schmidt, Antonio Pinto, Miroslava Kvandova, Ksenija Vujacic-Mirski, Konstantina Filippou, Markus Dudek, Markus Bosmann, Matthias Klein, Tobias Bopp, Omar Hahad, Philipp S Wild, Katrin Frauenknecht, Axel Methner, Erwin R Schmidt, Steffen Rapp, Hanke Mollnau, Thomas Münzel
Aims: Aircraft noise causes endothelial dysfunction, oxidative stress, and inflammation. Transportation noise increases the incidence of coronary artery disease, hypertension, and stroke. The underlying mechanisms are not well understood. Herein, we investigated effects of phagocyte-type NADPH oxidase (Nox2) knockout and different noise protocols (around-the-clock, sleep/awake phase noise) on vascular and cerebral complications in mice. Methods and results: C57BL/6j and Nox2-/- (gp91phox-/-) mice were exposed to aircraft noise (maximum sound level of 85 dB(A), average sound pressure level of 72 dB(A)) around-the-clock or during sleep/awake phases for 1, 2, and 4 days...
June 14, 2018: European Heart Journal
https://www.readbyqxmd.com/read/29849459/low-dose-of-aripiprazole-advanced-sleep-rhythm-and-reduced-nocturnal-sleep-time-in-the-patients-with-delayed-sleep-phase-syndrome-an-open-labeled-clinical-observation
#9
Yuki Omori, Takashi Kanbayashi, Yohei Sagawa, Aya Imanishi, Ko Tsutsui, Yuya Takahashi, Masahiro Takeshima, Manabu Takaki, Seiji Nishino, Tetsuo Shimizu
Objectives: Delayed sleep phase syndrome (DSPS) is a chronic dysfunction of circadian rhythm of the subject that impairs functioning in social, occupational, or other spheres. High rate of depression is found among DSPS patients. Aripiprazole (APZ), a second-generation antipsychotic, is effective in treatment of depression as well as schizophrenia. Recently, few case reports show the effectiveness of APZ in treating DSPS and non-24-hour sleep-wake rhythm disorder. Therefore, we tried to treat DSPS with depression using APZ...
2018: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/29848376/a-lightweight-sensing-platform-for-monitoring-sleep-quality-and-posture-a-simulated-validation-study
#10
Richard M Kwasnicki, George W V Cross, Luke Geoghegan, Zhiqiang Zhang, Peter Reilly, Ara Darzi, Guang Zhong Yang, Roger Emery
BACKGROUND: The prevalence of self-reported shoulder pain in the UK has been estimated at 16%. This has been linked with significant sleep disturbance. It is possible that this relationship is bidirectional, with both symptoms capable of causing the other. Within the field of sleep monitoring, there is a requirement for a mobile and unobtrusive device capable of monitoring sleep posture and quality. This study investigates the feasibility of a wearable sleep system (WSS) in accurately detecting sleeping posture and physical activity...
May 30, 2018: European Journal of Medical Research
https://www.readbyqxmd.com/read/29843249/circadian-rhythm-cognition-and-mood-disorders-in-huntington-s-disease
#11
Elena Bellosta Diago, Saül Martínez-Horta, Sonia Santos Lasaosa, Alejandro Viloria Alebesque, Jesús Pérez-Pérez, Jaime Kulisevsky, Javier López Del Val
BACKGROUND: Sleep disturbances are an early and prominent feature of Huntington's disease (HD). OBJECTIVE: The current study investigated the relation between sleep quality impairment and cognitive and psychiatric symptoms in patients with HD. METHODS: Sleep quality, daytime sleepiness, and neurocognitive symptoms were assessed in 38 mutation carriers (23 premanifest and 15 early stage) and 38 age-and sex-matched controls using standardized questionnaires (the Pittsburgh Sleep Quality Index, Epworth Sleepiness Scale, the cognitive section of the Unified Huntington's Disease Rating Scale, the Hospital Anxiety and Depression Scale, and the Irritability Scale)...
2018: Journal of Huntington's Disease
https://www.readbyqxmd.com/read/29546661/sleep-pattern-of-adolescents-in-a-school-in-delhi-india-impact-on-their-mood-and-academic-performance
#12
Ruchi Singh, Jagdish C Suri, Renuka Sharma, Tejas Suri, Tulsi Adhikari
OBJECTIVES: To examine the sleep pattern and observe differences in sleep routines, phase preferences, mood, attendance, and academic performance among different adolescent age students. Secondly, to observe the age at which sleep phase transition and changes in sleep requirement become evident. METHODS: A cross-sectional study was conducted among 501 students (aged 11-15 y) of a school in Delhi, India. Students were evaluated for their sleep patterns, sleep duration, habits of napping, quality of sleep, sleepiness, depression, phase preferences by self-reported school sleep habits survey questionnaire along with school performance and attendance...
March 16, 2018: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/29534856/delayed-sleep-phase-syndrome-and-bipolar-disorder-pathogenesis-and-available-common-biomarkers
#13
REVIEW
Farid Talih, Nour Y Gebara, Farah S Andary, Stefania Mondello, Firas Kobeissy, Raffaele Ferri
Circadian rhythm disturbances are common in bipolar affective disorder (BD). Delayed sleep-wake phase syndrome (DSWPD) is the most prevalent circadian rhythm sleep-wake disorder (CRSWDs) and is frequently observed in BD. It is unclear whether DSWPD in BD is an independent process or is a consequence of BD. In this hypothetical review, we discuss the overlap between BD and DSWPD and potential common biomarkers for DSWPD and BD. The review will include a discussion of the genetics of DSWPD and BD. Biomarkers elucidating the pathophysiological processes occurring in these two disorders may offer insight into the etiology and prognosis of both conditions...
February 13, 2018: Sleep Medicine Reviews
https://www.readbyqxmd.com/read/29529448/a-case-control-study-of-sleep-disturbances-in-pediatric-obsessive-compulsive-disorder
#14
Fern Jaspers-Fayer, Sarah Yao Lin, Laura Belschner, Janet Mah, Elaine Chan, Clare Bleakley, Rhonda Ellwyn, Annie Simpson, Katherine McKenney, S Evelyn Stewart
BACKGROUND: Sleep disturbances, including delayed sleep phase disorder (DSPD) and disorders of sleep initiation and maintenance (DIMS), have repeatedly been identified in adult obsessive-compulsive disorder (OCD). These disturbances have not been well-characterized objectively in pediatric OCD. METHODS: Thirty OCD-affected youth (8-18 yrs, 40% male) and 30 age and gender-matched healthy controls (HCs) completed the Sleep Disturbances Scale for Children (SDSC), and one week of continuous actigraphy with concurrent sleep diary documentation...
April 2018: Journal of Anxiety Disorders
https://www.readbyqxmd.com/read/29425580/japanese-sleep-questionnaire-for-elementary-schoolers-jsq-es-validation-and-population-based-score-distribution
#15
Ayano Kuwada, Ikuko Mohri, Ryosuke Asano, Shigeyuki Matsuzawa, Kumi Kato-Nishimura, Ikuko Hirata, Takashi Mitsuhosi, Kuriko Kagitani-Shimono, Mariko Nakanishi, Masaya Tachibana, Yuko Ohno, Masako Taniike
OBJECTIVE: The Japanese Sleep Questionnaire for Elementary Schoolers (JSQ-ES) was developed to measure the sleep habits and disturbances of Japanese children. The current study aimed to present psychometric properties and describe the score distribution of the JSQ-ES. In addition, it examined correlations between the sleep and daytime behavior of school-aged children. METHOD: Guardians of 4369 elementary school children and 100 children diagnosed with sleep disorders in two clinics completed the JSQ-ES...
January 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29410090/temporal-partitioning-of-adaptive-responses-of-the-murine-heart-to-fasting
#16
Rachel A Brewer, Helen E Collins, Ryan D Berry, Manoja K Brahma, Brian A Tirado, Rodrigo A Peliciari-Garcia, Haley L Stanley, Adam R Wende, Heinrich Taegtmeyer, Namakkal Soorappan Rajasekaran, Victor Darley-Usmar, Jianhua Zhang, Stuart J Frank, John C Chatham, Martin E Young
Recent studies suggest that the time of day at which food is consumed dramatically influences clinically-relevant cardiometabolic parameters (e.g., adiposity, insulin sensitivity, and cardiac function). Meal feeding benefits may be the result of daily periods of feeding and/or fasting, highlighting the need for improved understanding of the temporal adaptation of cardiometabolic tissues (e.g., heart) to fasting. Such studies may provide mechanistic insight regarding how time-of-day-dependent feeding/fasting cycles influence cardiac function...
March 15, 2018: Life Sciences
https://www.readbyqxmd.com/read/29374207/variability-in-phase-and-amplitude-of-diurnal-rhythms-is-related-to-variation-of-mood-in-bipolar-and-borderline-personality-disorder
#17
O Carr, K E A Saunders, A Tsanas, A C Bilderbeck, N Palmius, J R Geddes, R Foster, G M Goodwin, M De Vos
Variable mood is an important feature of psychiatric disorders. However, its measurement and relationship to objective measureas of physiology and behaviour have rarely been studied. Smart-phones facilitate continuous personalized prospective monitoring of subjective experience and behavioural and physiological signals can be measured through wearable devices. Such passive data streams allow novel estimates of diurnal variability. Phase and amplitude of diurnal rhythms were quantified using new techniques that fitted sinusoids to heart rate (HR) and acceleration signals...
January 26, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29278313/interactions-between-psychosocial-stress-and-the-circadian-endogenous-clock
#18
REVIEW
Charlotte Helfrich-Förster
Animals are exposed to regular daily challenges in their environment as well as to unpredictable stressful events, so-called stressors. Both measures require adequate physiological responses that are controlled by the circadian system and the stress system. The two systems are highly linked with each other. The circadian system prepares the animal for the regular daily challenges by upregulating the stress system before the animal's activity phase every day. In addition, unpredicted environmental challenges upregulate the stress system independently of the circadian system...
December 2017: PsyCh Journal
https://www.readbyqxmd.com/read/29247670/sleep-on-a-high-heat-capacity-mattress-increases-conductive-body-heat-loss-and-slow-wave-sleep
#19
Kurt Kräuchi, Elisa Fattori, Alessandra Giordano, Maria Falbo, Antonella Iadarola, Francesca Aglì, Antonella Tribolo, Roberto Mutani, Alessandro Cicolin
Environmental temperature can strongly affect sleep. The habitual sleep phase is usually located between evening decline and morning rise of the circadian rhythm of core body temperature (CBT). However, the thermophysiological mechanisms promoting or disturbing sleep are not yet fully understood. The purpose of this study was to examine the effects of a high heat capacity mattress (HHCM) on CBT, skin temperatures and sleep in comparison to a conventional low heat capacity mattress (LHCM). Based on the higher heat capacity of HHCM an increase in conductive body heat loss enhances the nocturnal decline in CBT can be expected...
March 1, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29213045/-an-effect-of-epilepsy-on-sleep-structure
#20
S G Khachatryan, Yu S Tunyan
In this review, the authors discuss the problem of management of the patient with epilepsy with regard an impact of epileptic seizures and syndromes on sleep structure. Sleep disorders can lead to worsening of seizure control and general medical condition of the patients. However, seizures themselves and types of epilepsy can affect the sleep architecture. One of the most frequent symptoms of disordered sleep in epilepsy patients is excessive daytime sleepiness, which can be a consequence of poor sleep quality due to frequent nocturnal seizures or excessive interictal epileptiform activity during sleep leading to frequent arousals...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
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