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Delayed sleep disorder

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https://www.readbyqxmd.com/read/28526480/human-seasonal-and-circadian-studies-in-antarctica-halley-75-0-s
#1
Josephine Arendt, Benita Middleton
Living for extended periods in Antarctica exposes base personnel to extremes of daylength (photoperiod) and temperature. At the British Antarctic Survey base of Halley, 75(0)S, the sun does not rise for 110 d in the winter and does not set for 100 d in summer. Photoperiod is the major time cue governing the timing of seasonal events such as reproduction in many species. The neuroendocrine signal providing photoperiodic information to body physiology is the duration of melatonin secretion which reflects the length of the night: longer in the short days of winter and shorter in summer...
May 16, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28522096/sleep-and-circadian-variability-in-people-with-delayed-sleep-wake-phase-disorder-versus-healthy-controls
#2
Helen J Burgess, Margaret Park, James K Wyatt, Muneer Rizvydeen, Louis F Fogg
OBJECTIVE/BACKGROUND: To compare sleep and circadian variability in adults with delayed sleep-wake phase disorder (DSWPD) to healthy controls. PATIENTS/METHODS: Forty participants (22 DSWPD, 18 healthy controls) completed a ten-day protocol, consisting of DLMO assessments on two consecutive nights, a five-day study break, followed by two more DLMO assessments. All participants were instructed to sleep within one hour of their self-reported average sleep schedule for the last four days of the study break...
June 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28522084/circadian-phase-dynamics-of-subjective-sleepiness-and-sensitivity-to-blue-light-in-young-adults-complaining-of-a-delayed-sleep-schedule
#3
Christophe Moderie, Solenne Van der Maren, Marie Dumont
OBJECTIVE: To assess factors that might contribute to a delayed sleep schedule in young adults with sub-clinical features of delayed sleep phase disorder. METHODS: Two groups of 14 young adults (eight women) were compared: one group complaining of a delayed sleep schedule and a control group with an earlier bedtime and no complaint. For one week, each subject maintained a target bedtime reflecting their habitual sleep schedule. Subjects were then admitted to the laboratory for the assessment of circadian phase (dim light melatonin onset), subjective sleepiness, and non-visual light sensitivity...
June 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28506292/normobaric-hypoxia-overnight-impairs-cognitive-reaction-time
#4
Stephan Pramsohler, Stefan Wimmer, Martin Kopp, Hannes Gatterer, Martin Faulhaber, Martin Burtscher, Nikolaus Cristoph Netzer
BACKGROUND: Impaired reaction time in patients suffering from hypoxia during sleep, caused by sleep breathing disorders, is a well-described phenomenon. High altitude sleep is known to induce periodic breathing with central apneas and oxygen desaturations, even in perfectly healthy subjects. However, deficits in reaction time in mountaineers or workers after just some nights of hypoxia exposure are not sufficiently explored. Therefore, we aimed to investigate the impact of sleep in a normobaric hypoxic environment on reaction time divided by its cognitive and motoric components...
May 15, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28501048/systematic-review-of-evidence-underpinning-non-pharmacological-therapies-in-dementia
#5
Richard Olley, Andrea Morales
Objective Dementia is one of the most common illnesses worldwide, and is one of the most important causes of disability in older people. Currently, dementia affects over 35million people around the globe. It is expected that this number will increase to 65.7million by 2030. Early detection, diagnosis and treatment to control the principal behaviour symptoms may help reduce these numbers and delay the progression to more advanced and dangerous stages of this disorder with resultant increase quality of life for those affected...
May 15, 2017: Australian Health Review: a Publication of the Australian Hospital Association
https://www.readbyqxmd.com/read/28500982/abnormal-sleep-duration-associated-with-hastened-depressive-recurrence-in-bipolar-disorder
#6
Anda Gershon, Dennis Do, Satyanand Satyanarayana, Saloni Shah, Laura D Yuen, Farnaz Hooshmand, Shefali Miller, Po W Wang, Terence A Ketter
BACKGROUND: Abnormal sleep duration (ASD, <6 or ≥9h) is common in bipolar disorder (BD), and often persists beyond acute mood episodes. Few longitudinal studies have examined the ASD's impact upon BD illness course. The current study examined the longitudinal impact of ASD upon bipolar depressive recurrence/recovery. METHODS: Outpatients referred to the Stanford BD Clinic during 2000-2011 were assessed with the Systematic Treatment Enhancement Program for BD (STEP-BD) Affective Disorders Evaluation at baseline, and with the Clinical Monitoring Form at monthly follow-ups for up to two years of naturalistic treatment...
May 8, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28486878/sleep-and-quality-of-life-in-children-with-traumatic-brain-injury-and-adhd
#7
Ozalp Ekinci, Çetin Okuyaz, Serkan Günes, Nuran Ekinci, Gülhan Örekeci, Halenur Teke, Meltem Çobanoğulları Direk
Objective Attention problems are common in children who sustain a traumatic brain injury (TBI). The differential features of TBI-related Attention Deficit Hyperactivity Disorder (ADHD) and primary ADHD are largely unknown. This study aimed to compare sleep problems and quality of life between children with TBI and ADHD and children with primary ADHD. Methods Twenty children with TBI (mean age = 12.7 ± 3.1 years) who had clinically significant ADHD symptoms according to the structured diagnostic interview and rating scales and a control group with primary ADHD (n = 20) were included...
January 2017: International Journal of Psychiatry in Medicine
https://www.readbyqxmd.com/read/28480154/congenital-tracheobronchomegaly-mounier-kuhn-syndrome-in-a-woman-with-human-immunodeficiency-virus-a-case-report
#8
Amanda Fletcher, Justin Stowell, Socrates Jamoulis
Congenital tracheobronchomegaly (Mounier-Kuhn Syndrome, MKS) is a rare idiopathic disorder characterized by dilation of the central airways, including the trachea and first through fourth order bronchi. MKS disproportionately affects men and results in chronic respiratory tract infections. The diagnosis is made through the synthesis of clinical and radiological data. Here we report a unique case of MKS in a patient with human immunodeficiency virus (HIV) infection. A 45-year-old African American woman with a past medical history of HIV, tobacco and recreational drug abuse, chronic obstructive pulmonary disease, sleep apnea, and a 15-year history of recurrent respiratory infections presented with dyspnea, wheezing, a productive cough, increased yellow-green sputum production, and subjective fevers...
April 4, 2017: Curēus
https://www.readbyqxmd.com/read/28455701/chronic-rem-sleep-restriction-in-juvenile-male-rats-induces-anxiety-like-behavior-and-alters-monoamine-systems-in-the-amygdala-and-hippocampus
#9
Janaína da Silva Rocha-Lopes, Ricardo Borges Machado, Deborah Suchecki
Adolescence is marked by major physiological changes, including those in the sleep-wake cycle, such as phase delay, which may result in reduced sleep hours. Sleep restriction and/or deprivation in adult rats activate stress response and seem to be a risk factor for triggering emotional disorders. In the present study, we sought to evaluate the behavioral and neurobiological consequences of prolonged REM sleep restriction in juvenile male rats. Immediately after weaning, on postnatal day 21, three males from each litter were submitted to REM sleep deprivation and the other three animals were maintained in their home-cages...
April 28, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28452835/vitamin-d-status-cardiometabolic-liver-and-mental-health-status-in-obese-youth-attending-a-pediatric-weight-management-centre
#10
Krista MacDonald, Kristine Godziuk, Jason Yap, Rena LaFrance, Mohammad Ansarian, Andrea Haqq, Diana R Mager
BACKGROUND: Vitamin D (VitD) deficiency and obesity are reaching epidemic proportions in North America, particularly in those with co-morbid conditions such as diabetes or liver disease. The study objective was to determine the prevalence of suboptimal vitD status and interrelationships with anthropometric, cardio-metabolic, liver, mental health and lifestyle (sleep/screen time) parameters in an ambulatory population of obese children. METHODS: Children (2-18 years) old attending a pediatric weight management clinic (n = 217) were retrospectively reviewed...
April 27, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28444476/assessing-the-dim-light-melatonin-onset-in-adults-with-autism-spectrum-disorder-and-no-comorbid-intellectual-disability
#11
Emma K Baker, Amanda L Richdale, Agnes Hazi, Luke A Prendergast
This study assessed melatonin levels and the dim light melatonin onset (DLMO) in adults with Autism Spectrum Disorder (ASD) and also investigated the relationships between melatonin and objectively measured sleep parameters. Sixteen adults with ASD (ASD-Only), 12 adults with ASD medicated for comorbid diagnoses of anxiety and/or depression (ASD-Med) and 32 controls participated in the study. Although, the timing of the DLMO did not differ between the two groups, advances and delays of the melatonin rhythm were observed in individual profiles...
April 26, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28440811/evaluation-of-circadian-phenotypes-utilizing-fibroblasts-from-patients-with-circadian-rhythm-sleep-disorders
#12
A Hida, Y Ohsawa, S Kitamura, K Nakazaki, N Ayabe, Y Motomura, K Matsui, M Kobayashi, A Usui, Y Inoue, H Kusanagi, Y Kamei, K Mishima
We evaluated the circadian phenotypes of patients with delayed sleep-wake phase disorder (DSWPD) and non-24-hour sleep-wake rhythm disorder (N24SWD), two different circadian rhythm sleep disorders (CRSDs) by measuring clock gene expression rhythms in fibroblast cells derived from individual patients. Bmal1-luciferase (Bmal1-luc) expression rhythms were measured in the primary fibroblast cells derived from skin biopsy samples of patients with DSWPD and N24SWD, as well as control subjects. The period length of the Bmal1-luc rhythm (in vitro period) was distributed normally and was 22...
April 25, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28437682/sleep-problems-in-pediatric-epilepsy-and-adhd-the-impact-of-comorbidity
#13
Ozalp Ekinci, Çetin Okuyaz, Serkan Gunes, Nuran Ekinci, Merve Kalınlı, Muhammet Emin Tan, Halenur Teke, Meltem Çobanoğulları Direk, Semra Erdoğan
AIMS: Attention-deficit hyperactivity disorder (ADHD) is a frequent comorbidity in pediatric epilepsy. Although sleep problems are commonly reported in both children with primary ADHD and epilepsy, those with epilepsy-ADHD comorbidity have not been well studied. This study aimed to compare sleep problems among three groups of children: 1) children with epilepsy, 2) children with epilepsy and ADHD (epilepsy-ADHD), and 3) children with primary ADHD. METHODS: 53 children with epilepsy, 35 children with epilepsy-ADHD, and 52 children with primary ADHD completed the Children's Sleep Habits Questionnaire (CSHQ)...
April 21, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28434058/medical-conditions-in-the-first-years-of-life-associated-with-future-diagnosis-of-asd-in-children
#14
Stacey E Alexeeff, Vincent Yau, Yinge Qian, Meghan Davignon, Frances Lynch, Phillip Crawford, Robert Davis, Lisa A Croen
This study examines medical conditions diagnosed prior to the diagnosis of autism spectrum disorder (ASD). Using a matched case control design with 3911 ASD cases and 38,609 controls, we found that 38 out of 79 medical conditions were associated with increased ASD risk. Developmental delay, mental health, and neurology conditions had the strongest associations (ORs 2.0-23.3). Moderately strong associations were observed for nutrition, genetic, ear nose and throat, and sleep conditions (ORs 2.1-3.2). Using machine learning methods, we clustered children based on their medical conditions prior to ASD diagnosis and demonstrated ASD risk stratification...
April 22, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28432040/usability-acceptability-and-adherence-to-an-electronic-self-monitoring-system-in-patients-with-major-depression-discharged-from-inpatient-wards
#15
Lise Lauritsen, Louise Andersen, Emilia Olsson, Stine Rauff Søndergaard, Lasse Benn Nørregaard, Philip Kaare Løventoft, Signe Dunker Svendsen, Erik Frøkjær, Hans Mørch Jensen, Ida Hageman, Lars Vedel Kessing, Klaus Martiny
BACKGROUND: Patients suffering from depression have a high risk of relapse and readmission in the weeks following discharge from inpatient wards. Electronic self-monitoring systems that offer patient-communication features are now available to offer daily support to patients, but the usability, acceptability, and adherence to these systems has only been sparsely investigated. OBJECTIVE: We aim to test the usability, acceptability, adherence, and clinical outcome of a newly developed computer-based electronic self-assessment system (the Daybuilder system) in patients suffering from depression, in the period from discharge until commencing outpatient treatment in the Intensive Outpatient Unit for Affective Disorders...
April 21, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28424459/development-and-outcomes-of-a-primary-care-based-sleep-assessment-service-in-canterbury-new-zealand
#16
Michael J Epton, Paul T Kelly, Brett I Shand, Sallyanne V Powell, Judith N Jones, Graham R B McGeoch, Michael C Hlavac
Prior to 2007, increasing demand for sleep services, plus inability to adequately triage severity, led to long delays in sleep assessment and accessing continuous positive airway pressure. We established a community sleep assessment service carried out by trained general practices using a standardised tool and overnight oximetry. All cases were discussed at a multi-disciplinary meeting, with four outcomes: severe obstructive sleep apnoea treated with continuous positive airway pressure; investigation with more complex studies; sleep physician appointment; no or non-severe sleep disorder for general practitioner management...
April 19, 2017: NPJ Primary Care Respiratory Medicine
https://www.readbyqxmd.com/read/28398464/caloric-restriction-and-healthy-life-span-frail-phenotype-of-nonhuman-primates-in-the-wisconsin-national-primate-research-center-caloric-restriction-study
#17
Yosuke Yamada, Joseph W Kemnitz, Richard Weindruch, Rozalyn M Anderson, Dale A Schoeller, Ricki J Colman
Calorie restriction without malnutrition increases longevity and delays the onset of age-associated disorders in multiple species. Recently, greater emphasis has been placed on healthy life span and preventing frailty than on longevity. Here, we show the beneficial effect of long-term calorie restriction on frailty in later life in a nonhuman primate. Frail phenotypes were evaluated using metabolic and physical activity data and defined using the Fried index. Shrinking was defined as unintentional weight loss of greater than 5% of body weight...
April 8, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28388406/mutation-of-the-human-circadian-clock-gene-cry1-in-familial-delayed-sleep-phase-disorder
#18
Alina Patke, Patricia J Murphy, Onur Emre Onat, Ana C Krieger, Tayfun Özçelik, Scott S Campbell, Michael W Young
Patterns of daily human activity are controlled by an intrinsic circadian clock that promotes ∼24 hr rhythms in many behavioral and physiological processes. This system is altered in delayed sleep phase disorder (DSPD), a common form of insomnia in which sleep episodes are shifted to later times misaligned with the societal norm. Here, we report a hereditary form of DSPD associated with a dominant coding variation in the core circadian clock gene CRY1, which creates a transcriptional inhibitor with enhanced affinity for circadian activator proteins Clock and Bmal1...
April 6, 2017: Cell
https://www.readbyqxmd.com/read/28377393/does-a-brief-behavioural-intervention-delivered-by-paediatricians-or-psychologists-improve-sleep-problems-for-children-with-adhd-protocol-for-a-cluster-randomised-translational-trial
#19
E Sciberras, M Mulraney, H Heussler, N Rinehart, T Schuster, L Gold, N Hayes, H Hiscock
INTRODUCTION: Up to 70% of children with attention-deficit/hyperactivity disorder (ADHD) experience sleep problems. We have demonstrated the efficacy of a brief behavioural intervention for children with ADHD in a large randomised controlled trial (RCT) and now aim to examine whether this intervention is effective in real-life clinical settings when delivered by paediatricians or psychologists. We will also assess the cost-effectiveness of the intervention. METHODS AND ANALYSIS: Children aged 5-12 years with ADHD (n=320) are being recruited for this translational cluster RCT through paediatrician practices in Victoria and Queensland, Australia...
April 4, 2017: BMJ Open
https://www.readbyqxmd.com/read/28367676/are-individual-differences-in-sleep-and-circadian-timing-amplified-by-use-of-artificial-light-sources
#20
Krithika Swaminathan, Elizabeth B Klerman, Andrew J K Phillips
Within the human population, there is large interindividual variability in the timing of sleep and circadian rhythms. This variability has been attributed to individual differences in sleep physiology, circadian physiology, and/or light exposure. Recent experimental evidence suggests that the latter is necessary to evoke large interindividual differences in sleep and circadian timing. We used a validated model of human sleep and circadian physiology to test the hypothesis that intrinsic differences in sleep and circadian timing are amplified by self-selected use of artificial light sources...
April 2017: Journal of Biological Rhythms
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