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213 papers 100 to 500 followers Insomnia, OSA, other sleep disorders
Miguel Ángel Martínez-García, Eusebi Chiner
No abstract text is available yet for this article.
April 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
Claudio Liguori, Nicola Biagio Mercuri, Francesca Izzi, Andrea Romigi, Alberto Cordella, Giuseppe Sancesario, Fabio Placidi
Study Objectives: Obstructive sleep apnea (OSA) is a common sleep disorder. The, literature lacks studies examining sleep, cognition, and Alzheimer's Disease (AD) cerebrospinal fluid (CSF) biomarkers in OSA patients. Therefore, we first studied cognitive performances, polysomnographic sleep, and CSF β-amyloid42, tau proteins, and lactate levels in patients affected by subjective cognitive impairment (SCI) divided in three groups: OSA patients (showing an Apnea-Hypopnea Index [AHI] ≥15/hr), controls (showing an AHI < 15/hr), and patients with OSA treated by continuous positive airway pressure (CPAP)...
May 1, 2017: Sleep
Sara Pasha, Sandhya Kumar, Arjun B Chatterjee, Guha Krishnaswamy
No abstract text is available yet for this article.
March 2017: Annals of Allergy, Asthma & Immunology
Ju Lynn Ong, June C Lo, Joshua J Gooley, Michael W L Chee
Study objectives: To investigate the temporal evolution of sleep EEG changes in adolescents across two cycles of sleep restriction and recovery simulating an intense school week and to examine the effect of an afternoon nap on nocturnal sleep. Methods: A parallel-group design, quasi-laboratory study was conducted in a student hostel. Fifty-seven adolescents (31 males, age = 15-19 years) were randomly assigned to nap or no nap groups. Participants underwent a 15-day protocol comprising two sleep restriction (5-hour time-in-bed [TIB]) and recovery (9-hour TIB) cycles...
April 1, 2017: Sleep
Pu Liao, Jean Wong, Mandeep Singh, David T Wong, Sazzadul Islam, Maged Andrawes, Colin M Shapiro, David P White, Frances Chung, Frances Chung
BACKGROUND: Surgical patients with obstructive sleep apnea (OSA) are at increased risk for perioperative complications. Postoperative supplemental oxygen is commonly used but it may contribute to respiratory depression in OSA patients receiving opioids. The objective of the study is to investigate the effect of postoperative supplemental oxygen on SaO2, sleep respiratory events, and CO2 level in patients with untreated OSA. METHODS: Consented patients with an apnea hypopnea index (AHI) >5 events/h on a preoperative polysomnography were randomized (1:1) to oxygen (O2) or no oxygen (Control)...
December 19, 2016: Chest
C E Thorn, B Knight, E Pastel, L J McCulloch, B Patel, A C Shore, K Kos
AIMS: Obstructive sleep apnea syndrome (OSAS) is associated with increased cardiovascular risk and diabetes independent of obesity. We investigated whether adipose tissue dysfunction is exacerbated due to increased tissue hypoxia. METHODS: Adipose tissue (AT) oxygenation was measured with a Clarke-type electrode (pATO2) in 16 men with OSAS before and after 4 months of continuous positive airway pressure therapy (CPAP) and in BMI-matched controls. Oxygenation was simultaneously monitored in arterial blood by pulse oximetry (SaO2); mixed blood in AT microcirculation by reflectance spectroscopy (SATO2) along with blood flow...
January 25, 2017: Diabetes & Metabolism
Emerson M Wickwire, Jeanne Geiger-Brown, Steven M Scharf, Christopher L Drake
Throughout the industrialized world, nearly one in five employees works some form of nontraditional shift. Such shift work is associated with numerous negative health consequences, ranging from cognitive complaints to cancer, as well as diminished quality of life. Furthermore, a substantial percentage of shift workers develop shift work disorder, a circadian rhythm sleep disorder characterized by excessive sleepiness, insomnia, or both as a result of shift work. In addition to adverse health consequences and diminished quality of life at the individual level, shift work disorder incurs significant costs to employers through diminished workplace performance and increased accidents and errors...
May 2017: Chest
Raewyn C Poulsen, Guy R Warman, Jamie Sleigh, Nicola M Ludin, James F Cheeseman
Post-operative patients experience sleep disturbances. Animal studies demonstrate that general anaesthesia (GA) can disrupt circadian rhythms and cause changes in the molecular clock, indicating that anaesthesia contributes to post-operative circadian disruption. Here we review the effect of anaesthesia on the circadian clock and its rhythms in order to summarise current findings outline commonalities between studies and propose mechanisms by which effects may be mediated. KEY POINTS: 1) GA has strong effects on the main neurotransmitter systems linked with circadian control (Gamma aminobutyric acid/N-methyl-D-aspartate (GABA/NMDA)) and may act by interfering with light-entrainment of the clock...
December 18, 2016: Sleep Medicine Reviews
Aneliya I Draganova, Kiril V Terziyski, Stefan S Kostianev
Chronic heart failure (CHF) is a major health problem associated with increased mortality, despite modern treatment options. Central sleep apnea (CSA)/Cheyne-Stokes breathing (CSB) is a common and yet largely under-diagnosed co-morbidity, adding significantly to the poor prognosis in CHF because of a number of acute and chronic effects, including intermittent hypoxia, sympathetic overactivation, disturbed sleep architecture and impaired physical tolerance. It is characterized by repetitive periods of crescendo-decrescendo ventilatory pattern, alternating with central apneas and hypopneas...
December 1, 2016: Folia Medica
Md Shajedur R Shawon, Jennifer L Perret, Chamara V Senaratna, Caroline Lodge, Garun S Hamilton, Shyamali C Dharmage
The objective of this systematic review is to synthesize the evidence on prevalence, polysomnographic findings and clinical outcomes of co-morbid obstructive sleep apnea (OSA) and chronic obstructive pulmonary disease (COPD) - known as the "overlap syndrome". We systematically searched PubMed on 1 December 2015 using appropriate medical subject headings (MeSH) and text words to capture prevalence studies and comparative studies of any observational design examining the clinical outcomes in patients with co-existent COPD and OSA...
April 2017: Sleep Medicine Reviews
Natasha M Drissi, Attila Szakács, Suzanne T Witt, Anna Wretman, Martin Ulander, Henriettae Ståhlbrandt, Niklas Darin, Tove Hallböök, Anne-Marie Landtblom, Maria Engström
Narcolepsy is a chronic sleep disorder caused by a loss of hypocretin-1 producing neurons in the hypothalamus. Previous neuroimaging studies have investigated brain function in narcolepsy during rest using positron emission tomography (PET) and single photon emission computed tomography (SPECT). In addition to hypothalamic and thalamic dysfunction they showed aberrant prefrontal perfusion and glucose metabolism in narcolepsy. Given these findings in brain structure and metabolism in narcolepsy, we anticipated that changes in functional magnetic resonance imaging (fMRI) resting state network (RSN) dynamics might also be apparent in patients with narcolepsy...
2016: Frontiers in Human Neuroscience
Olinda L Pineda
No abstract text is available yet for this article.
January 31, 2017: Neurology
Jagan A Pillai, James B Leverenz
Sleep abnormalities are clearly recognized as distinct clinical symptom of concern in neurodegenerative disorders. Appropriate management of sleep related symptoms has a positive impact on the quality of life of patients with neurodegenerative disorders. This review provides an overview of mechanisms that are currently being considered that tie sleep with neurodegeneration. It appraises the literature regarding specific sleep changes among common neurodegenerative diseases with a focus on Alzheimer's disease and synucleinopathies (i...
January 10, 2017: Chest
Friederike Sixel-Döring, Johannes Zimmermann, Andrea Wegener, Brit Mollenhauer, Claudia Trenkwalder
STUDY OBJECTIVES: To investigate the development of REM sleep behavior disorder (RBD) and REM sleep behavioral events (RBE) not yet fulfilling diagnostic criteria for RBD as markers for neurodegeneration in a cohort of Parkinson disease (PD) patients between their de novo baseline assessment and two-year follow-up in comparison to healthy controls (HC). METHODS: Clinically confirmed PD patients and HC with video-supported polysomnography (vPSG) data at baseline were re-investigated after two years...
September 1, 2016: Sleep
Yan Zhu, Polina Fenik, Guanxia Zhan, Rebecca Somach, Ryan Xin, Sigrid Veasey
STUDY OBJECTIVES: Intermittent short sleep (ISS) is pervasive among students and workers in modern societies, yet the lasting consequences of repeated short sleep on behavior and brain health are largely unexplored. Wake-activated neurons may be at increased risk of metabolic injury across sustained wakefulness. METHODS: To examine the effects of ISS on wake-activated neurons and wake behavior, wild-type mice were randomized to ISS (a repeated pattern of short sleep on 3 consecutive days followed by 4 days of recovery sleep for 4 weeks) or rested control conditions...
August 1, 2016: Sleep
Tinh-Hai Collet, Agatha A van der Klaauw, Elana Henning, Julia M Keogh, Diane Suddaby, Sekesai V Dachi, Síle Dunbar, Sarah Kelway, Suzanne L Dickson, I Sadaf Farooqi, Sebastian M Schmid
STUDY OBJECTIVES: The rise in obesity has been paralleled by a decline in sleep duration in epidemiological studies. However, the potential mechanisms linking energy balance and the sleep/wake cycle are not well understood. We aimed to examine the effects of manipulating energy balance on the sleep/wake cycle. METHODS: Twelve healthy normal weight men were housed in a clinical research facility and studied at three time points: baseline, after energy balance was disrupted by 2 days of caloric restriction to 10% of energy requirements, and after energy balance was restored by 2 days of ad libitum/free feeding...
September 1, 2016: Sleep
Yasutaka Ojio, Atsushi Nishida, Shinji Shimodera, Fumiharu Togo, Tsukasa Sasaki
STUDY OBJECTIVES: To investigate sleep duration associated with the least depression/anxiety in adolescence. METHODS: Grades 7-12 Japanese students (n = 18,250, aged 12-18 y) from public junior high/high schools were studied in a cross-sectional design. Due to missing/implausible data, 15,637 out of the 18,250 students were statistically analyzed. Relationship between sleep duration on school nights and depression/anxiety, measured using self-report questionnaires, including the General Health Questionnaire-12 (GHQ-12), were studied by sex and grade, controlling for bedtime regularity...
August 1, 2016: Sleep
Alice Jessie Clark, Paula Salo, Theis Lange, Poul Jennum, Marianna Virtanen, Jaana Pentti, Mika Kivimäki, Naja Hulvej Rod, Jussi Vahtera
STUDY OBJECTIVES: Impaired sleep has been linked to increased risk of cardiovascular disease (CVD), but the underlying mechanisms are still unsettled. We sought to determine how onset of impaired sleep affects the risk of established physiological CVD risk factors (i.e., hypertension, diabetes, and dyslipidemia). METHODS: In a longitudinal cohort study with 3 survey waves (2000, 2004, 2008) from the Finnish Public Sector study we used repeated information on sleep duration and disturbances to determine onset of impaired sleep...
September 1, 2016: Sleep
Kristine Yaffe, Ilya Nasrallah, Tina D Hoang, Diane S Lauderdale, Kristen L Knutson, Mercedes R Carnethon, Lenore J Launer, Cora E Lewis, Stephen Sidney
STUDY OBJECTIVES: Sleep duration has been associated with risk of dementia and stroke, but few studies have investigated the relationship between sleep duration and brain MRI measures, particularly in middle age. METHODS: In a prospective cohort of 613 black and white adults (mean age = 45.4 years) enrolled in the Coronary Artery Risk Development in Young Adults (CARDIA) study, participants reported typical sleep duration, dichotomized into moderate sleep duration (> 6 to ≤ 8 h) and short sleep duration (≤ 6 h) at baseline (2005-2006)...
September 1, 2016: Sleep
Raman K Malhotra
No abstract text is available yet for this article.
August 1, 2016: Sleep
2017-01-27 22:22:59
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