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https://www.readbyqxmd.com/read/29339309/late-chronotype-is-associated-with-enhanced-amygdala-reactivity-and-reduced-fronto-limbic-functional-connectivity-to-fearful-versus-happy-facial-expressions
#1
Charlotte Mary Horne, Ray Norbury
Increasing evidence suggests late chronotype individuals are at increased risk of developing depression. However, the underlying neural mechanisms that confer risk are not fully understood. Here, fifty healthy, right-handed individuals without a current or previous diagnosis of depression, family history of depression or sleep disorder underwent functional magnetic resonance imaging (FMRI). Participants completed an implicit emotion processing task (gender discrimination) including happy and fearful facial expressions...
January 12, 2018: NeuroImage
https://www.readbyqxmd.com/read/29339206/objective-sleep-measures-in-subacute-stroke-inpatients-associated-with-levels-and-improvements-in-activities-of-daily-living
#2
Ren-Jing Huang, Ching-Hsiang Lai, Shin-Da Lee, Fang-Yu Pai, Shen-Wen Chang, Ai-Hui Chung, Yi-Fang Chang, Hua Ting
OBJECTIVE: To investigate whether objective polysomnographic measures of prevalent sleep problems such as sleep-disordered-breathing (SDB) and insomnia are associated with activities of daily living levels in inpatients at rehabilitation units DESIGN: Retrospective and observational study SETTING: Single rehabilitation center PARTICIPANTS: One hundred twenty-three enrolled subacute stroke inpatients (61.6 ± 13.1 years; 23.8 ± 3.4 kg/m2; 33% female; 90.5 ± 36.7 days post-stroke) underwent a one-night polysomnography study and one-month-long inpatient rehabilitation program...
January 12, 2018: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29339193/a-pilot-study-on-the-biomechanical-assessment-of-obstructive-sleep-apnea-pre-and-post-bariatric-surgery
#3
Ahmed M Al-Jumaily, Sherif Ashaat, Bryn Martin, Rachael Pohle-Krauza, Matthew Krauza, Adrian Dan, John Zografakis
Obesity is a major risk factor for obstructive sleep apnea patients. In obese patients the severity of this risk can be reduced by bariatric surgery. This pilot study investigates the perioperative effects of bariatric surgery on obstructive sleep apnea and on the physical and biomechanical characteristics of the upper airway. Polysomnography and computer tomography data for 10 morbid obese patients promoted for bariatric surgery were conducted before surgery and at 6 and 12 months postoperatively for assessment of the oropharyngeal anatomy, and subsequent three-dimensional modelling of the airway...
January 12, 2018: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/29338982/involvement-of-peripheral-alpha2a-adrenoceptor-in-the-acceleration-of-gastrointestinal-transit-and-abdominal-visceral-pain-induced-by-intermittent-deprivation-of-rem-sleep
#4
Fukie Yaoita, Masamichi Muto, Hiroki Murakami, Shiori Endo, Mifuyu Kozawa, Masahiro Tsuchiya, Takeshi Tadano, Koichi Tan-No
Many studies have associated sleep alterations with the severity of irritable bowel syndrome (IBS) symptoms, but the direct pathophysiological relationship has not been clarified. In addition, alterations in noradrenergic signaling have been implicated in the pathophysiology of IBS, and alpha2-adrenoceptors are potential treatment targets. We have previously shown that acceleration of gastrointestinal transit (GIT) elicited by intermittent rapid eye movement (REM) sleep deprivation stress may fulfill the profile of a model of IBS...
January 12, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29338957/commuting-and-sleep-results-from-the-hispanic-community-health-study-study-of-latinos-sue%C3%A3-o-ancillary-study
#5
Megan E Petrov, Jia Weng, Kathryn J Reid, Rui Wang, Alberto R Ramos, Douglas M Wallace, Carmela Alcantara, Jianwen Cai, Krista Perreira, Rebeca A Espinoza Giacinto, Phyllis C Zee, Daniela Sotres-Alvarez, Sanjay R Patel
INTRODUCTION: Commute time is associated with reduced sleep time, but previous studies have relied on self-reported sleep assessment. The present study investigated the relationships between commute time for employment and objective sleep patterns among non-shift working U.S. Hispanic/Latino adults. METHODS: From 2010 to 2013, Hispanic/Latino employed, non-shift-working adults (n=760, aged 18-64 years) from the Sueño study, ancillary to the Hispanic Community Health Study/Study of Latinos, reported their total daily commute time to and from work, completed questionnaires on sleep and other health behaviors, and wore wrist actigraphs to record sleep duration, continuity, and variability for 1 week...
January 12, 2018: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/29338843/current-status-of-animal-models-of-posttraumatic-stress-disorder-behavioral-and-biological-phenotypes-and-future-challenges-in-improving-translation
#6
REVIEW
Jessica Deslauriers, Mate Toth, Andre Der-Avakian, Victoria B Risbrough
Increasing predictability of animal models of posttraumatic stress disorder (PTSD) has required active collaboration between clinical and preclinical scientists. Modeling PTSD is challenging, as it is a heterogeneous disorder with ≥20 symptoms. Clinical research increasingly utilizes objective biological measures (e.g., imaging, peripheral biomarkers) or nonverbal behaviors and/or physiological responses to complement verbally reported symptoms. This shift toward more-objectively measurable phenotypes enables refinement of current animal models of PTSD, and it supports the incorporation of homologous measures across species...
November 20, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29337903/use-of-accelerometer-activity-monitors-to-detect-changes-in-pruritic-behaviors-interim-clinical-data-on-6-dogs
#7
Susan M Wernimont, Robin J Thompson, Scott L Mickelsen, Spencer C Smith, Isabella C Alvarenga, Kathy L Gross
Veterinarians and pet owners have limited ability to assess pruritic behaviors in dogs. This pilot study assessed the capacity of the Vetrax® triaxial accelerometer to measure these behaviors in six dogs with pruritus likely due to environmental allergens. Dogs wore the activity monitor for two weeks while consuming their usual pet food (baseline), then for eight weeks while consuming a veterinary-exclusive pet food for dogs with suspected non-food-related skin conditions (Hill's Prescription Diet® Derm DefenseTM Canine dry food)...
January 16, 2018: Sensors
https://www.readbyqxmd.com/read/29335916/association-between-obstructive-sleep-apnea-and-non-alcoholic-fatty-liver-disease-a-systematic-review-and-meta-analysis
#8
REVIEW
Shanshan Jin, Suwen Jiang, Airong Hu
The relationship between obstructive sleep apnea (OSA) and non-alcoholic fatty liver disease (NAFLD) has been an issue of great concern. The primary purpose of this study was to determine the influence of OSA on the levels of liver enzymes including alanine transaminase (ALT) and aspartate transaminase (AST). The secondary purpose was to estimate the effect of OSA on the histological lesions of NAFLD, such as steatosis, lobular inflammation, ballooning degeneration, fibrosis, as well as NAFLD activity score (NAS)...
January 15, 2018: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29333914/hybrid-pet-mri-imaging-in-healthy-unsedated-newborn-infants-with-quantitative-rcbf-measurements-using-15o-water-pet
#9
Julie B Andersen, Ulrich Lindberg, Oline V Olesen, Didier Benoit, Claes N Ladefoged, Henrik Bw Larsson, Liselotte Højgaard, Gorm Greisen, Ian Law
In this study, a new hybrid PET/MRI method for quantitative regional cerebral blood flow (rCBF) measurements in healthy newborn infants was assessed and the low values of rCBF in white matter previously obtained by arterial spin labeling (ASL) were tested. Four healthy full-term newborn subjects were scanned in a PET/MRI scanner during natural sleep after median intravenous injection of 14 MBq 15O-water. Regional CBF was quantified using a one-tissue-compartment model employing an image-derived input function (IDIF) from the left ventricle...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29333381/changes-in-drosophila-melanogaster-sleep-wake-behavior-due-to-lotus-nelumbo-nucifera-seed-and-hwang-jeong-polygonatum-sibiricum-extracts
#10
Kyungae Jo, SangDuk Jeon, Chang-Won Ahn, Sung Hee Han, Hyung Joo Suh
We evaluated the sleep enhancement activity of the medicinal herbs valerian (Valeriana officinalis), jujube (Ziziphus jujube), lotus seed (Nelumbo nucifera), Gastrodia elata, Polygonatum sibiricum, and baekbokryung (Poria cocos), which can relieve insomnia in a Drosophila model. Locomotor activity was measured in the Drosophila model to evaluate the sleep activity of Korean medicinal herbs traditionally used as sleep aids. The group treated with lotus seed extract showed less nocturnal activity. Treatment with 10 or 20 mg/mL of P...
December 2017: Preventive Nutrition and Food Science
https://www.readbyqxmd.com/read/29332686/no-evidence-for-an-epidemiological-transition-in-sleep-patterns-among-children-a-12-country-study
#11
Taru Manyanga, Joel D Barnes, Mark S Tremblay, Peter T Katzmarzyk, Stephanie T Broyles, Tiago V Barreira, Mikael Fogelholm, Gang Hu, Carol Maher, Jose Maia, Timothy Olds, Olga L Sarmiento, Martyn Standage, Catrine Tudor-Locke, Jean-Philippe Chaput
OBJECTIVE: To examine the relationships between socioeconomic status (SES; household income and parental education) and objectively measured sleep patterns (sleep duration, sleep efficiency, and bedtime) among children from around the world and explore how the relationships differ across country levels of human development. DESIGN: Multinational, cross-sectional study from sites in Australia, Brazil, Canada, China, Colombia, Finland, India, Kenya, Portugal, South Africa, the United Kingdom, and the United States...
February 2018: Sleep Health
https://www.readbyqxmd.com/read/29332685/sleep-patterns-in-children-differ-by-ethnicity-cross-sectional-and-longitudinal-analyses-using-actigraphy
#12
Tevita F W Vaipuna, Sheila M Williams, Victoria L Farmer, Kim A Meredith-Jones, Rosalina Richards, Barbara C Galland, Lisa Te Morenga, Rachael W Taylor
OBJECTIVES: To determine whether sleep patterns (duration, timing, efficiency) differ by ethnicity. DESIGN: Longitudinal study. SETTING: Dunedin, New Zealand. PARTICIPANTS: A total of 939 children (48% male) aged 4-12 years (572 European, 181 Māori, 111 Pacific, 75 Asian). MEASUREMENTS: All measurements were obtained at months 0, 12, and 24. Anthropometry was obtained using standard techniques, and parents completed questionnaires assessing demographics, dietary intake, and television habits of children...
February 2018: Sleep Health
https://www.readbyqxmd.com/read/29332681/sleep-duration-sleep-quality-and-sexual-orientation-findings-from-the-2013-2015-national-health-interview-survey
#13
Adena M Galinsky, Brian W Ward, Sarah S Joestl, James M Dahlhamer
INTRODUCTION: This study identifies associations between sleep outcomes and sexual orientation net of sociodemographic and health-related characteristics, and produces estimates generalizable to the US adult population. PARTICIPANTS/METHODS: We used 2013-2015 National Health Interview Survey data (46,909 men; 56,080 women) to examine sleep duration and quality among straight, gay/lesbian, and bisexual US adults. Sleep duration was measured as meeting National Sleep Foundation age-specific recommendations for hours of sleep per day...
February 2018: Sleep Health
https://www.readbyqxmd.com/read/29332675/sleep-duration-and-incidence-of-type-2-diabetes-the-multiethnic-cohort
#14
Gertraud Maskarinec, Simone Jacobs, Yvette Amshoff, Veronica W Setiawan, Yurii B Shvetsov, Adrian A Franke, Laurence N Kolonel, Christopher A Haiman, Loïc Le Marchand
OBJECTIVES: As an emerging risk factor for the rising incidence of type 2 diabetes, we examined sleep duration in relation to type 2 diabetes and several biomarkers. DESIGN: Prospective cohort recruited 1993-1996. SETTING: The Multiethnic Cohort in Hawaii and California. PARTICIPANTS: A cohort of 151,691 White, African American, Japanese American, Native Hawaiian, and Latino participants; 9695 cohort members had biomarker measurements...
February 2018: Sleep Health
https://www.readbyqxmd.com/read/29332673/prevalence-and-comorbidity-of-sleep-conditions-in-australian-adults-2016-sleep-health-foundation-national-survey
#15
Sarah L Appleton, Tiffany K Gill, Carol J Lang, Anne W Taylor, R Douglas McEvoy, Nigel P Stocks, David A González-Chica, Robert J Adams
OBJECTIVE: To determine the prevalence of sleep conditions (obstructive sleep apnea [OSA], insomnia symptoms, simple snoring, and restless legs) and their associated burden of chronic conditions in a community sample. DESIGN: Cross-sectional national adult online survey. SETTING: Community-based sample. PARTICIPANTS: Australian adults ≥18 years, N = 1011. MEASUREMENTS: A cross-sectional national online survey assessed diagnosed OSA, OSA symptoms, insomnia symptoms, sleep problems, excessive daytime sleepiness (Epworth Sleepiness Scale ≥11), and physician-diagnosed health conditions (heart disease, diabetes, hypertension, reflux disease, lung disease, depression, anxiety/panic disorder, arthritis)...
February 2018: Sleep Health
https://www.readbyqxmd.com/read/29330768/comorbid-insomnia-symptoms-predict-lower-6-month-adherence-to-cpap-in-us-veterans-with-obstructive-sleep-apnea
#16
Douglas M Wallace, A M Sawyer, S Shafazand
PURPOSE: There is limited information on the association between pre-treatment insomnia symptoms and dysfunctional sleep beliefs with continuous positive airway pressure (CPAP) adherence in veterans with obstructive sleep apnea (OSA). Our aims were to describe demographic and sleep characteristics of veterans with and without comorbid insomnia and determine whether pre-treatment insomnia symptoms and dysfunctional sleep beliefs predict CPAP use after 6 months of therapy. METHODS: Hispanic veterans attending the Miami VA sleep clinic were recruited and completed the insomnia severity index, the dysfunctional sleep belief and attitude scale (DBAS), and other questionnaires...
January 4, 2018: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29329970/a-prospective-study-on-the-association-of-sleep-duration-with-grip-strength-among-middle-aged-and-older-chinese
#17
Tian Yu Wang, Yili Wu, Tong Wang, Yujie Li, Dongfeng Zhang
BACKGROUND: Longitudinal studies on sleep duration and grip strength decline are limited. This study aimed to evaluate the associations of baseline sleep duration with follow-up grip strength and grip strength changeover time among a large sample of middle-aged and older Chinese. METHODS: Data from China Health and Retirement Longitudinal Study, CHARLS (2011-2015), were analyzed. Hand grip strength was measured by dynamometers twice with 4 years interval. Baseline self-reported nighttime sleep duration was collected by questionnaire...
January 9, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29329461/high-heritability-of-adolescent-sleep-wake-behavior-on-free-but-not-school-days-a-long-term-twin-study
#18
A P Inderkum, L Tarokh
Adolescence development is characterized by significant changes in sleep biology. Despite an overall decline in sleep duration and a delay in bedtime, significant inter-individual variation in sleep has been reported. The aim of the current study was to examine genetic and environmental influences on sleep in adolescence using long-term (6-month) actigraphy measurements, differentiating between school and free days. Sixteen monozygotic (MZ; n = 32) and 10 dizygotic (DZ; n = 20) twin pairs (mean age 12.8 ± 1...
January 10, 2018: Sleep
https://www.readbyqxmd.com/read/29329416/automatic-ecg-based-detection-of-autonomic-arousals-and-their-association-with-cortical-arousals-leg-movements-and-respiratory-events-in-sleep
#19
Mads Olsen, Logan Douglas Schneider, Joseph Cheung, Paul E Peppard, Poul J Jennum, Emmanuel Mignot, Helge Bjarup Dissing Sorensen
Study objectives: The current definition of sleep arousals neglects to address the diversity of arousals and their systemic cohesion. Autonomic arousals (AA) are autonomic activations often associated with cortical arousals (CA), but they may also occur in isolation in relation to a respiratory event, a leg movement event or spontaneously, without any other physiological associations. AA should be acknowledged as essential events to understand and explore the systemic implications of arousals...
January 10, 2018: Sleep
https://www.readbyqxmd.com/read/29326331/predicting-response-to-oxygen-therapy-in-obstructive-sleep-apnoea-patients-using-a-10-minute-daytime-test
#20
David Wang, Keith K Wong, Luke Rowsell, Garrick W Don, Brendon J Yee, Ronald R Grunstein
There is no satisfactory treatment for obstructive sleep apnoea (OSA). Supplemental low-flow oxygen therapy (LFO2) has been shown to reduce hypoxaemia and is well tolerated by patients with OSA. However, oxygen therapy may be beneficial only to certain subsets of patients with OSA. In this study, we evaluated a 10-min awake ventilatory chemoreflex test in predicting individual OSA response to 2 months of LFO2 therapy.At baseline, patients with OSA underwent ventilatory chemoreflex testing in the afternoon, prior to the overnight polysomnography...
January 2018: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
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