keyword
MENU ▼
Read by QxMD icon Read
search

circadian sleep

keyword
https://www.readbyqxmd.com/read/29777288/time-shifting-effects-of-methylphenidate-on-daily-rhythms-in-the-diurnal-rodent-arvicanthis-ansorgei
#1
Jorge Mendoza, Hester C van Diepen, Rob Rodrigues Pereira, Johanna H Meijer
People suffering of attention-deficit/hyperactivity disorder (ADHD) and treated with the psychostimulant methylphenidate (MPH) show sleep-wake cycle and daily rhythm alterations despite the beneficial effects of MPH on behavioral symptoms (i.e., hyperactivity, attention). In nocturnal rodents (i.e., mice), chronic exposure to MPH alters the neural activity of the circadian clock in the suprachiasmatic nucleus (SCN), behavioral rhythms, and the sleep-wake cycle. Here, we studied the effects of MPH on daily rhythms of behavior and body temperature of the diurnal rodent Arvicanthis ansorgei...
May 18, 2018: Psychopharmacology
https://www.readbyqxmd.com/read/29776774/association-of-disrupted-circadian-rhythmicity-with-mood-disorders-subjective-wellbeing-and-cognitive-function-a-cross-sectional-study-of-91-105-participants-from-the-uk-biobank
#2
Laura M Lyall, Cathy A Wyse, Nicholas Graham, Amy Ferguson, Donald M Lyall, Breda Cullen, Carlos A Celis Morales, Stephany M Biello, Daniel Mackay, Joey Ward, Rona J Strawbridge, Jason M R Gill, Mark E S Bailey, Jill P Pell, Daniel J Smith
BACKGROUND: Disruption of sleep and circadian rhythmicity is a core feature of mood disorders and might be associated with increased susceptibility to such disorders. Previous studies in this area have used subjective reports of activity and sleep patterns, but the availability of accelerometer-based data from UK Biobank participants permits the derivation and analysis of new, objectively ascertained circadian rhythmicity parameters. We examined associations between objectively assessed circadian rhythmicity and mental health and wellbeing phenotypes, including lifetime history of mood disorder...
May 15, 2018: Lancet Psychiatry
https://www.readbyqxmd.com/read/29773830/circadian-and-homeostatic-modulation-of-multi-unit-activity-in-midbrain-dopaminergic-structures
#3
Karim Fifel, Johanna H Meijer, Tom Deboer
Although the link between sleep disturbances and dopamine (DA)-related neurological and neuropsychiatric disorders is well established, the impact of sleep alterations on neuronal activity of midbrain DA-ergic structures is currently unknown. Here, using wildtype C57Bl mice, we investigated the circadian- and sleep-related modulation of electrical neuronal activity in midbrain ventral-tegmental-area (VTA) and substantia nigra (SN). We found no significant circadian modulation of activity in SN while VTA displayed a low amplitude but significant circadian modulation with increased firing rates during the active phase...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29773814/melanopsin-mediated-pupil-function-is-impaired-in-parkinson-s-disease
#4
Daniel S Joyce, Beatrix Feigl, Graham Kerr, Luisa Roeder, Andrew J Zele
Parkinson's disease (PD) is characterised by non-motor symptoms including sleep and circadian disruption. Melanopsin-expressing intrinsically photosensitive Retinal Ganglion Cells (ipRGC) transmit light signals to brain areas controlling circadian rhythms and the pupil light reflex. To determine if non-motor symptoms observed in PD are linked to ipRGC dysfunction, we evaluated melanopsin and rod/cone contributions to the pupil response in medicated participants with PD (n = 17) and controls (n = 12)...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29764218/coping-with-shift-work-related-circadian-disruption-a-mixed-methods-case-study-on-napping-and-caffeine-use-in-australian-nurses-and-midwives
#5
Stephanie Centofanti, Siobhan Banks, Antonietta Colella, Caroline Dingle, Lisa Devine, Helen Galindo, Sophie Pantelios, Gorjana Brkic, Jillian Dorrian
INTRODUCTION: Two of the most ubiquitous fatigue countermeasures used by shift-working nurses are napping and caffeine. This mixed-methods case study investigated the ways nurses and midwives utilised napping and caffeine countermeasures to cope with shift work, and associated sleep, physical health and psychological health outcomes. MATERIALS AND METHODS: N = 130 Australian shift-working nurses and midwives (mean age = 44 years, range = 21-67, 115F, 15M) completed the Standard Shiftwork Index...
May 15, 2018: Chronobiology International
https://www.readbyqxmd.com/read/29764215/myotonic-dystrophytype-1-report-of-non-24-h-sleep-wake-disorder-with-excessive-daytime-sleepiness
#6
Lucio Huebra Pimentel Filho, Ana Carolina Dias Gomes, Bruno Gonçalves, Sergio Tufik, Fernando Morgadinho Coelho
Myotonic dystrophy (MD) is a neuromuscular disease with myotonia, progressive weakness, and involvement of CNS, heart, and gastrointestinal system. Excessive daytime sleepiness (EDS) in myotonic dystrophy type 1 (MD1) is related to sleep breathing diseases, restless leg syndrome, periodic limb movements during sleep and narcoleptic-like phenotype. However, authors highlight a central dysfunction of sleep regulation. We describe a 26-year-old, female, MD1 patient with EDS. Sleep diary/actigraphy evidenced two different circadian periods with values of 1442 and 1522 min...
May 15, 2018: Chronobiology International
https://www.readbyqxmd.com/read/29759891/the-putative-role-of-oxidative-stress-and-inflammation-in-the-pathophysiology-of-sleep-dysfunction-across-neuropsychiatric-disorders-focus-on-chronic-fatigue-syndrome-bipolar-disorder-and-multiple-sclerosis
#7
REVIEW
Gerwyn Morris, Brendon Stubbs, Cristiano A Köhler, Ken Walder, Anastasiya Slyepchenko, Michael Berk, André F Carvalho
Sleep and circadian abnormalities are prevalent and burdensome manifestations of diverse neuro-immune diseases, and may aggravate the course of several neuropsychiatric disorders. The underlying pathophysiology of sleep abnormalities across neuropsychiatric disorders remains unclear, and may involve the inter-play of several clinical variables and mechanistic pathways. In this review, we propose a heuristic framework in which reciprocal interactions of immune, oxidative and nitrosative stress, and mitochondrial pathways may drive sleep abnormalities across potentially neuroprogressive disorders...
April 4, 2018: Sleep Medicine Reviews
https://www.readbyqxmd.com/read/29759629/circadian-variation-of-ventricular-arrhythmias-in-catecholaminergic-polymorphic-ventricular-tachycardia
#8
Christina Y Miyake, S Yukiko Asaki, Gregory Webster, Richard J Czosek, Joseph Atallah, Kishor Avasarala, Sri O Rao, Patricia E Thomas, Jeffrey J Kim, Santiago O Valdes, Caridad de la Uz, Yunfei Wang, Xander H T Wehrens, Dominic Abrams
OBJECTIVES: The aim of this paper was to investigate whether ventricular arrhythmias in children with catecholaminergic polymorphic ventricular tachycardia (CPVT) show circadian patterns. BACKGROUND: Circadian arrhythmic patterns have been established in long QT, Brugada, and early repolarization, but have not been investigated in CPVT. METHODS: This is a multicenter, retrospective review of pediatric CPVT patients, age <21 years at diagnosis...
November 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759273/drugs-used-in-circadian-sleep-wake-rhythm-disturbances
#9
REVIEW
Helen J Burgess, Jonathan S Emens
This article focuses on melatonin and other melatonin receptor agonists, and specifically their circadian phase shifting and sleep-enhancing properties. The circadian system and circadian rhythm sleep-wake disorders are briefly reviewed, followed by a summary of the circadian phase shifting, sleep-enhancing properties, and possible safety concerns associated with melatonin and other melatonin receptor agonists. The recommended use of melatonin, including dose and timing, in the latest American Academy of Sleep Medicine Clinical Practice Guidelines for the treatment of intrinsic circadian rhythm disorders is also reviewed...
June 2018: Sleep Medicine Clinics
https://www.readbyqxmd.com/read/29758571/effects-of-a-20-min-nap-post-normal-and-jet-lag-conditions-on-p300-components-in-athletes
#10
Elisabeth Petit, Hubert Bourdin, Grégory Tio, Omer Yenil, Emmanuel Haffen, Fabienne Mougin
Post-lunch sleepiness belongs to biological rhythms. Athletes take a nap to counteract afternoon circadian nadir, in prevision of disturbed sleep. This study examined the effects of brief post-lunch nap on vigilance in young and healthy athletes. The P300 components, physiological and cognitive performances were assessed either after nap or rest, following a night of normal sleep (NSC) or simulated jet lag condition (5-h advance-JLC). P300 wave is the positive deflection at about 300 ms in response to a rare stimulus, representing higher information processing...
May 14, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29755330/the-high-costs-of-low-grade-inflammation-persistent-fatigue-as-a-consequence-of-reduced-cellular-energy-availability-and-non-adaptive-energy-expenditure
#11
REVIEW
Tamara E Lacourt, Elisabeth G Vichaya, Gabriel S Chiu, Robert Dantzer, Cobi J Heijnen
Chronic or persistent fatigue is a common, debilitating symptom of several diseases. Persistent fatigue has been associated with low-grade inflammation in several models of fatigue, including cancer-related fatigue and chronic fatigue syndrome. However, it is unclear how low-grade inflammation leads to the experience of fatigue. We here propose a model of an imbalance in energy availability and energy expenditure as a consequence of low-grade inflammation. In this narrative review, we discuss how chronic low-grade inflammation can lead to reduced cellular-energy availability...
2018: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29754901/nocte-is-required-for-integrating-light-and-temperature-inputs-in-circadian-clock-neurons-of-drosophila
#12
Chenghao Chen, Min Xu, Yuto Anantaprakorn, Mechthild Rosing, Ralf Stanewsky
Circadian clocks organize biological processes to occur at optimized times of day and thereby contribute to overall fitness. While the regular daily changes of environmental light and temperature synchronize circadian clocks, extreme external conditions can bypass the temporal constraints dictated by the clock. Despite advanced knowledge about how the daily light-dark changes synchronize the clock, relatively little is known with regard to how the daily temperature changes influence daily timing and how temperature and light signals are integrated...
May 8, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29753192/circadian-activity-rhythm-in-adult-attention-deficit-hyperactivity-disorder
#13
Lorenzo Tonetti, Andreas Conca, Giancarlo Giupponi, Marco Filardi, Vincenzo Natale
The aim of the present study was to analyze the features of circadian motor activity rhythm of adult attention-deficit hyperactivity disorder (ADHD) patients, by means of functional linear modeling, within the theoretical framework of the two-process model of sleep regulation. Thirty-two ADHD patients and 32 healthy controls (HCs) participated the study. Actiwatch AW64 actigraph was used to quantify motor activity data in 1-min epochs. Participants wore the actigraph on the non-dominant wrist for seven consecutive days...
May 6, 2018: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/29751698/-pharmacological-effect-of-schisandrae-chinensis-fructus-and-relative-active-components-on-cardiovascular-and-cerebrovascular-diseases
#14
Min-Yu Zhang, Hong-Wei Wu, Li-Ping Xu, Hong-Jun Yang
Cardiovascular and cerebrovascular diseases (CCDs) are the primary causes of death in Chinese adults. With the increase in morbidity and mortality rates and the decrease in the age of onset, CCD becomes a very natural target for traditional Chinese medicine. Schisandrae Chinensis Fructus (SCF) is the dry ripe fruit of Schisandra chinensis (Turcz.) Baill., which features a sweet and sour taste and the effects of calming the heart and tranquilizing the mind. It is mainly used for treatment of dysphoria and palpitation, insomnia and dreamful sleep due to the lack of spirit preservation...
April 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29746721/melatonin-for-the-promotion-of-sleep-in-adults-in-the-intensive-care-unit
#15
REVIEW
Sharon R Lewis, Michael W Pritchard, Oliver J Schofield-Robinson, Phil Alderson, Andrew F Smith
BACKGROUND: Patients in the intensive care unit (ICU) experience sleep deprivation caused by environmental disruption, such as high noise levels and 24-hour lighting, as well as increased patient care activities and invasive monitoring as part of their care. Sleep deprivation affects physical and psychological health, and patients perceive the quality of their sleep to be poor whilst in the ICU. Artificial lighting during night-time hours in the ICU may contribute to reduced production of melatonin in critically ill patients...
May 10, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29744870/circadian-nutritional-behaviours-and-cancer-risk-new-insights-from-the-nutrinet-sant%C3%A3-prospective-cohort-study
#16
Bernard Srour, Sabine Plancoulaine, Valentina A Andreeva, Philippine Fassier, Chantal Julia, Pilar Galan, Serge Hercberg, Mélanie Deschasaux, Paule Latino-Martel, Mathilde Touvier
Circadian disruption has been classified as probably carcinogenic to humans by the World Health Organization's International Agency for Research on Cancer. The circadian clock is subject to environmental factors, particularly light exposure and food intake rhythms. However, the association between nutritional circadian behaviours and cancer is not well understood. We investigated the longitudinal associations between number of eating episodes, night-time fasting duration, time of first and last eating episodes, as well as nutritional quality of last eating episode, respectively, with breast and prostate cancer risks, the two main cancer locations in women and men respectively...
May 9, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29743086/numerical-study-of-entrainment-of-the-human-circadian-system-and-recovery-by-light-treatment
#17
Soon Ho Kim, Segun Goh, Kyungreem Han, Jong Won Kim, MooYoung Choi
BACKGROUND: While the effects of light as a zeitgeber are well known, the way the effects are modulated by features of the sleep-wake system still remains to be studied in detail. METHODS: A mathematical model for disturbance and recovery of the human circadian system is presented. The model combines a circadian oscillator and a sleep-wake switch that includes the effects of orexin. By means of simulations, we characterize the period-locking zone of the model, where a stable 24-hour circadian rhythm exists, and the occurrence of circadian disruption due to both insufficient light and imbalance in orexin...
May 9, 2018: Theoretical Biology & Medical Modelling
https://www.readbyqxmd.com/read/29741116/possible-sleep-bruxism-circadian-preference-and-sleep-related-characteristics-and-behaviors-among-dental-students
#18
Sara Oliveira Aguiar, Ivana Meyer Prado, Karen Simon Rezende Silveira, Lucas Guimarães Abreu, Sheyla Márcia Auad, Saul Martins Paiva, Júnia Maria Cheib Serra-Negra
OBJECTIVE: To assess sleep bruxism prevalence and its association with circadian preference and sleep-related characteristics among dental students. METHODS: Dental students of the Federal University of Minas Gerais participated in this cross-sectional study. Participants answered a scale assessing individuals' circadian preference, and a questionnaire regarding sleep-related characteristics and behaviors, history of muscle ache in the temporomandibular area, and history of bruxism...
May 9, 2018: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/29740701/characteristics-and-circadian-distribution-of-cardiac-arrhythmias-in-patients-with-heart-failure-and-sleep-disordered-breathing
#19
Hazem Omran, Thomas Bitter, Dieter Horstkotte, Olaf Oldenburg, Henrik Fox
BACKGROUND: Cardiac arrhythmias and sleep-disordered breathing (SDB) are common comorbidities in heart failure with reduced ejection fraction (HFrEF). However, understanding of the association between arrhythmias and SDB is poor. This study assessed the occurrence and circadian distribution of ventricular arrhythmias in HFrEF patients with and without SDB. METHODS: This retrospective analysis included HFrEF patients admitted for unattended overnight cardiorespiratory polygraphy and 24-h Holter-ECG recording...
May 8, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29737879/associations-between-chronotype-sleep-disturbances-and-seasonality-with-fatigue-and-inflammatory-bowel-disease-symptoms
#20
Adrian A Chrobak, Jarosław Nowakowski, Małgorzata Zwolińska-Wcisło, Dorota Cibor, Magdalena Przybylska-Feluś, Katarzyna Ochyra, Monika Rzeźnik, Alicja Dudek, Aleksandra Arciszewska, Marcin Siwek, Dominika Dudek
Growing number of studies suggests link between circadian rhythms and inflammatory bowel diseases (IBD) manifestation. We hypothesize that: 1) IBD are associated with increased eveningness and sleep disturbances; 2) eveningness and sleep disturbances are related to more severe IBD symptoms. In total, 129 participants were enrolled to this study, divided into three groups: 34 Crohn's disease (CD) patients, 38 ulcerative colitis (UC) patients and 57 healthy controls (HC) group. They all fulfilled a questionnaire, consisting of the Composite Scale of Morningness (CSM), Seasonal Pattern Assessment Questionnaire (SPAQ), Pittsburgh Sleep Quality Index, Inflammatory Bowel Disease Questionnaire (IBDQ) and Multidimensional Fatigue Inventory (MFI)...
May 8, 2018: Chronobiology International
keyword
keyword
87798
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"