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https://www.readbyqxmd.com/read/28331380/classical-conditioning-for-preserving-the-effects-of-short-melatonin-treatment-in-children-with-delayed-sleep-a-pilot-study
#1
Annette van Maanen, Anne Marie Meijer, Marcel G Smits, Frans J Oort
Melatonin treatment is effective in treating sleep onset problems in children with delayed melatonin onset, but effects usually disappear when treatment is discontinued. In this pilot study, we investigated whether classical conditioning might help in preserving treatment effects of melatonin in children with sleep onset problems, with and without comorbid attention deficit hyperactivity disorder (ADHD) or autism. After a baseline week, 16 children (mean age: 9.92 years, 31% ADHD/autism) received melatonin treatment for 3 weeks and then gradually discontinued the treatment...
2017: Nature and Science of Sleep
https://www.readbyqxmd.com/read/28331379/smartphone-viewing-distance-and-sleep-an-experimental-study-utilizing-motion-capture-technology
#2
Michitaka Yoshimura, Momoko Kitazawa, Yasuhiro Maeda, Masaru Mimura, Kazuo Tsubota, Taishiro Kishimoto
There are studies reporting the negative impact of smartphone utilization on sleep. It is considered that reduction of melatonin secretion under the blue light exposure from smart-phone displays is one of the causes. The viewing distance may cause sleep disturbance, because the viewing distance determines the screen illuminance and/or asthenopia. However, to date, there has been no study closely investigating the impact of viewing distance on sleep; therefore, we sought to determine the relationship between smartphone viewing distance and subjective sleep status...
2017: Nature and Science of Sleep
https://www.readbyqxmd.com/read/28327443/correcting-delayed-circadian-phase-with-bright-light-therapy-predicts-improvement-in-adhd-symptoms-a-pilot-study
#3
Rachel E Fargason, Aaron D Fobian, Lauren M Hablitz, Jodi R Paul, Brittny A White, Karen L Cropsey, Karen L Gamble
Attention-deficit/hyperactivity disorder (ADHD) is a common condition with comorbid insomnia reported in >70% of children and adults. These patients demonstrate delays in sleep-wake rhythms, nocturnal rise in melatonin, and early morning rise in cortisol. Given that standard psychopharmacologic treatments for ADHD often do not completely control symptoms in participants with circadian rhythm delay, we sought to test whether bright light therapy (BLT) advances circadian rhythms and further reduces ADHD symptoms over standard treatments...
March 6, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28324298/circadian-disruption-associated-with-alzheimer-s-disease
#4
REVIEW
Yumna Saeed, Sabra M Abbott
Alzheimer's disease (AD) is increasing in prevalence and has a significant impact on caregivers and the healthcare system. One of the many physiologic process affected by AD is the circadian system, with disruption reflected in abnormalities of the sleep-wake cycle. This interaction is bidirectional, with circadian and sleep disruption influencing disease progression. Understanding the bidirectional relationship between AD and circadian disruption may allow for earlier recognition of the potential to develop dementia as well as improved targeted approaches for therapy...
April 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28321642/circadian-rhythm-dysregulation-in-bipolar-spectrum-disorders
#5
REVIEW
Lauren B Alloy, Tommy H Ng, Madison K Titone, Elaine M Boland
PURPOSE OF REVIEW: We review recent evidence for circadian rhythm dysregulation in bipolar spectrum disorders (BSDs). We examine evidence for endogenous abnormalities in the biological clock and disruptions in the external entrainment of circadian rhythms in BSDs. We also address whether circadian dysregulation provides vulnerability to onset of BSD and evidence for a new integration of reward and circadian dysregulation in BSD. RECENT FINDINGS: Relative circadian phase delay (e...
April 2017: Current Psychiatry Reports
https://www.readbyqxmd.com/read/28314944/the-case-for-too-little-melatonin-signalling-in-increased-diabetes-risk
#6
EDITORIAL
Amélie Bonnefond, Philippe Froguel
Genome-wide association studies have detected an association between type 2 diabetes risk and a non-coding SNP located in MTNR1B, the gene encoding melatonin receptor 2 (MT2). Melatonin regulates circadian rhythms and sleep and associates with metabolic disorders. However, the mechanisms underlying these actions are still unclear. Functional genomic, animal and clinical studies have not reached the same conclusions: while some studies have reported that decreased melatonin signalling increases type 2 diabetes risk, others have found the opposite...
March 17, 2017: Diabetologia
https://www.readbyqxmd.com/read/28286917/characterizing-sleep-in-adolescents-and-adults-with-autism-spectrum-disorders
#7
S E Goldman, M L Alder, H J Burgess, B A Corbett, R Hundley, D Wofford, D B Fawkes, L Wang, M L Laudenslager, B A Malow
We studied 28 adolescents/young adults with autism spectrum disorders (ASD) and 13 age/sex matched individuals of typical development (TD). Structured sleep histories, validated questionnaires, actigraphy (4 weeks), and salivary cortisol and melatonin (4 days each) were collected. Compared to those with TD, adolescents/young adults with ASD had longer sleep latencies and more difficulty going to bed and falling asleep. Morning cortisol, evening cortisol, and the morning-evening difference in cortisol did not differ by diagnosis (ASD vs...
March 12, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28285255/relationships-between-circadian-measures-depression-and-response-to-antidepressant-treatment-a-preliminary-investigation
#8
Leslie M Swanson, Helen J Burgess, Edward D Huntley, Holli Bertram, Ann Mooney, Jennifer Zollars, Richard Dopp, Robert Hoffmann, Roseanne Armitage, J Todd Arnedt
Few studies have examined relationships between circadian rhythms and unipolar major depressive disorder. Further, no study to date has examined circadian markers as predictors of response to depression treatment. In the present study, we examined associations between circadian timing and its alignment with sleep and depression severity in 30 adults with major depressive disorder who completed a randomized controlled trial of two weeks of time in bed (TIB) restriction administered adjunctive to fluoxetine, with a focus on sex differences...
March 8, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28282750/evening-electronic-device-use-the-effects-on-alertness-sleep-and-next-day-physical-performance-in-athletes
#9
Maddison J Jones, Peter Peeling, Brian Dawson, Shona Halson, Joanna Miller, Ian Dunican, Michael Clarke, Carmel Goodman, Peter Eastwood
The aim of the present study was to investigate the influence of different types of tasks performed with or without an electronic device (tablet) on pre-sleep alertness, subsequent sleep quality and next-day athletic performance. Eight highly trained netball players attended a sleep laboratory for pre-sleep testing, polysomnographic sleep monitoring and next-day physical performance testing on 5 separate occasions (1 familiarisation and 4 experimental sessions). For 2 h prior to bedtime, athletes completed cognitively stimulating tasks (puzzles) or passive tasks (reading) with or without a tablet...
February 14, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28276854/activity-sleep-and-ambient-light-have-a-different-impact-on-circadian-blood-pressure-heart-rate-and-body-temperature-rhythms
#10
D G Gubin, D Weinert, S V Rybina, L A Danilova, S V Solovieva, A M Durov, N Y Prokopiev, P A Ushakov
The aim of the present study was to investigate the impact of endogenous and exogenous factors for the expression of the daily rhythms of body temperature (BT), blood pressure (BP) and heart rate (HR). One hundred and seventy-three young adults (YA), 17-24 years old (y.o.), of both genders were studied under a modified constant-routine (CR) protocol for 26 h. Participants were assigned randomly to groups with different lighting regimens: CR-LD, n = 77, lights (>400 l×) on from 09:00 to 17:00 h and off (<10 l×) from 17:00 to 09:00 next morning; CR-LL, n = 81, lights on (>400 l×) during the whole experimental session; CR-DD, n = 15, constant dim light (<10 l×) during the whole experiment...
February 16, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28274900/comparative-study-between-the-use-of-melatonin-and-a-solution-with-melatonin-tryptophan-and-vitamin-b6-as-an-inducer-of-spontaneous-sleep-in-children-during-an-auditory-response-test-an-alternative-to-commonly-used-sedative-drugs
#11
Antonio Della Volpe, Antonietta De Lucia, Clementina Pirozzi, Vincenzo Pastore
OBJECTIVE: An elective investigation into the early diagnosis of deafness in children under the age of 4-5 years is performed using auditory evoked potentials of auditory brainstem responses (ABRs). In case of pediatric patients, the major difficulty includes being examined during spontaneous sleep, which is complicated to obtain, especially in the age range of 12 to 72 months. Recently, melatonin has been used as a "sleep inducer" in diagnostic tests with positive results. Our aim was to evaluate the use of melatonin and of a solution containing melatonin, tryptophan, and vitamin B6 as an inducer of spontaneous sleep on repeated ABR analyses as well as to evaluate the reduction in analyses with sedative drugs in case of uncooperative patients...
March 9, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28258648/effectiveness-of-sleep-based-interventions-for-children-with-autism-spectrum-disorder-a-meta-synthesis
#12
Belinda M Cuomo, Sharmila Vaz, Elinda Ai Lim Lee, Craig Thompson, Jessica M Rogerson, Torbjorn Falkmer
Sleep problems are common in children with autism spectrum disorder (ASD). This meta-synthesis collated eight previously published systematic reviews examining the efficacy of sleep interventions in children with ASD in an attempt to present a clear analysis of trialed interventions. The collated reviews consider five major groups of sleep interventions for children with ASD: melatonin therapy, pharmacologic treatments other than melatonin, behavioral interventions, parent education/education programs, and alternative therapies (massage therapy, aromatherapy, and multivitamin and iron supplementation)...
March 4, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28245865/can-tryptophan-supplement-intake-at-breakfast-enhance-melatonin-secretion-at-night
#13
Shunsuke Nagashima, Makoto Yamashita, Chiaki Tojo, Masayuki Kondo, Takeshi Morita, Tomoko Wakamura
BACKGROUND: Tryptophan (TRP) is an essential amino acid, and it has been suggested that TRP intake at breakfast combined with daytime bright light exposure can increase nocturnal melatonin secretion. However, the mechanisms involved are not yet clear. The aim of this study was to examine the effect of TRP supplement intake at breakfast on nocturnal melatonin secretion under different daytime light intensities in humans. METHOD: Twelve subjects (aged 21.3 ± 3...
February 28, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28237017/can-short-wavelength-depleted-bright-light-during-single-simulated-night-shifts-prevent-circadian-phase-shifts
#14
J Regente, J de Zeeuw, F Bes, C Nowozin, S Appelhoff, A Wahnschaffe, M Münch, D Kunz
In single night shifts, extending habitual wake episodes leads to sleep deprivation induced decrements of performance during the shift and re-adaptation effects the next day. We investigated whether short-wavelength depleted (=filtered) bright light (FBL) during a simulated night shift would counteract such effects. Twenty-four participants underwent a simulated night shift in dim light (DL) and in FBL. Reaction times, subjective sleepiness and salivary melatonin concentrations were assessed during both nights...
May 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28229310/diagnosis-and-treatment-of-non-24-h-sleep-wake-disorder-in-the-blind
#15
REVIEW
Jonathan S Emens, Charmane I Eastman
Non-24-h sleep-wake disorder (non-24) is a circadian rhythm disorder occurring in 55-70% of totally blind individuals (those lacking conscious light perception) in which the 24-h biological clock (central, hypothalamic, circadian pacemaker) is no longer synchronized, or entrained, to the 24-h day. Instead, the overt rhythms controlled by the biological clock gradually shift progressively earlier or later (free run) in accordance with the clock's near-24-h period, resulting in a recurrent pattern of daytime hypersomnolence and night-time insomnia...
February 22, 2017: Drugs
https://www.readbyqxmd.com/read/28228148/the-effect-of-melatonin-on-depressive-symptoms-anxiety-circadian-and-sleep-disturbances-in-patients-after-acute-coronary-syndrome-medacis-study-protocol-for-a-randomized-controlled-trial
#16
Michael Tvilling Madsen, Anders Isbrand, Ulla Overgaard Andersen, Lars Juel Andersen, Mustafa Taskiran, Erik Simonsen, Ismail Gögenur
BACKGROUND: Depression following acute coronary syndrome (ACS) constitutes a serious and debilitating problem. Approximately one in five patients will develop significant depression following ACS and less severe depressive symptoms are even more frequent. Furthermore, anxiety symptoms and sleep-wake disturbances are frequent. The objective of the MEDACIS trial is to investigate whether prophylactic treatment with melatonin has a preventive effect on depression, depressive and anxiety symptoms, sleep, and circadian disturbances following ACS...
February 23, 2017: Trials
https://www.readbyqxmd.com/read/28222021/intense-blue-light-therapy-during-the-night-time-does-not-suppress-the-rhythmic-melatonin-biosynthesis-in-a-young-boy
#17
K Stebelova, J Kosnacova, M Zeman
OBJECTIVE: Melatonin is a hormone predominantly synthesized and secreted during the night by the pineal gland. Artificial light at night, especially its blue part, acutely suppresses the melatonin production. Th e aim of the present study was to find out, whether an intense blue light phototherapy of severe hyperbilirubinemia, may suppress the melatonin production during the night when the eyes will be properly protected by a sleep mask. METHODS: The main melatonin metabolite, 6-sulphatoxymelatonin was measured in urine in a nine-year old boy suffering from the Crigler-Najjar syndrome type I...
January 1, 2017: Endocrine Regulations
https://www.readbyqxmd.com/read/28218891/blood-transcriptome-based-biomarkers-for-human-circadian-phase
#18
Emma E Laing, Carla S Möller-Levet, Norman Poh, Nayantara Santhi, Simon N Archer, Derk-Jan Dijk
Diagnosis and treatment of circadian rhythm sleep-wake disorders both require assessment of circadian phase of the brain's circadian pacemaker. The gold-standard univariate method is based on collection of a 24-hr time series of plasma melatonin, a suprachiasmatic nucleus-driven pineal hormone. We developed and validated a multivariate whole-blood mRNA-based predictor of melatonin phase which requires few samples. Transcriptome data were collected under normal, sleep-deprivation and abnormal sleep-timing conditions to assess robustness of the predictor...
February 20, 2017: ELife
https://www.readbyqxmd.com/read/28215911/conditions-associated-with-rem-sleep-behaviour-disorder-description-of-a-hospital-series
#19
M J Abenza Abildúa, A Miralles Martinez, F J Arpa Gutiérrez, V Lores Gutiérrez, C Algarra Lucas, C Jimeno Montero, B Sánchez García, M Mata Álvarez-Santullano, C Borrue Fernández, G Cordero Martín, G Gutiérrez Cueto, M D Torrecillas Narváez, I Thuissard Vasallo, A Gómez Aceña
INTRODUCTION: REM sleep behaviour disorder (RBD) is characterised by violent behaviours (screaming, kicking, vivid dreams) during REM sleep. It has a prevalence of 1% to 2% of the general population and is especially frequent in men and the population older than 60. In the last decade, RBD has been suggested to be a prodrome of neurodegenerative disease. We analysed associated neurological diseases and responses to drug treatment in 33 patients with RBD treated in the multidisciplinary sleep disorders unit at Hospital Infanta Sofía...
February 16, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28215244/driving-home-from-the-night-shift-a-bright-light-intervention-study
#20
Denise M Weisgerber, Maria Nikol, Ralph E Mistlberger
Sleep deprivation (SD) impairs vigilance and increases the risk of driving accidents during the commute home after night work. Bright light (BL) can enhance alertness and cognitive performance. We examined the effects of BL (5600 lux) versus dim light (DL, 35 lux) at the end of a night awake on driving performance. METHODS: Subjects (N = 19, 22.8 ± 4 ya) completed three conditions, counterbalanced for order at >1 week intervals. The two overnight SD conditions began in the lab at usual bedtime...
February 2017: Sleep Medicine
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