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Sleep fragmentation

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https://www.readbyqxmd.com/read/28445548/assessing-the-severity-of-sleep-apnea-syndrome-based-on-ballistocardiogram
#1
Zhu Wang, Xingshe Zhou, Weichao Zhao, Fan Liu, Hongbo Ni, Zhiwen Yu
BACKGROUND: Sleep Apnea Syndrome (SAS) is a common sleep-related breathing disorder, which affects about 4-7% males and 2-4% females all around the world. Different approaches have been adopted to diagnose SAS and measure its severity, including the gold standard Polysomnography (PSG) in sleep study field as well as several alternative techniques such as single-channel ECG, pulse oximeter and so on. However, many shortcomings still limit their generalization in home environment. In this study, we aim to propose an efficient approach to automatically assess the severity of sleep apnea syndrome based on the ballistocardiogram (BCG) signal, which is non-intrusive and suitable for in home environment...
2017: PloS One
https://www.readbyqxmd.com/read/28444396/circadian-impairment-of-distal-skin-temperature-rhythm-in-patients-with-sleep-disordered-breathing-the-effect-of-cpap
#2
Antonio Martinez-Nicolas, Marc Guaita, Joan Santamaría, Josep M Montserrat, María Ángeles Rol, Juan Antonio Madrid
Study objectives: Our aim was to evaluate the circadian rhythm of distal skin temperature (DST) in Sleep Disordered Breathing (SDB), its relation to excessive daytime sleepiness and the effect of continuous positive airway pressure (CPAP) on DST. Methods: Eighty SDB patients (53.1±1.2 years old, 27.6% women) and 67 healthy subjects (52.3±1.6 years old, 26.9% women) wore a temperature data logger for one week. On the last day of that week, SDB patients underwent a polysomnography followed by a Maintenance of Wakefulness Test (MWT), Multiple Sleep Latency Test (MSLT) and Sustained Attention to Response Task (SART) protocol to objectively quantify daytime sleepiness...
April 22, 2017: Sleep
https://www.readbyqxmd.com/read/28435883/normal-sleep-requires-the-astrocyte-brain-type-fatty-acid-binding-protein-fabp7
#3
Jason R Gerstner, Isaac J Perron, Samantha M Riedy, Takeo Yoshikawa, Hiroshi Kadotani, Yuji Owada, Hans P A Van Dongen, Raymond J Galante, Kaitlin Dickinson, Jerry C P Yin, Allan I Pack, Marcos G Frank
Sleep is found widely in the animal kingdom. Despite this, few conserved molecular pathways that govern sleep across phyla have been described. The mammalian brain-type fatty acid binding protein (Fabp7) is expressed in astrocytes, and its mRNA oscillates in tandem with the sleep-wake cycle. However, the role of FABP7 in regulating sleep remains poorly understood. We found that the missense mutation FABP7.T61M is associated with fragmented sleep in humans. This phenotype was recapitulated in mice and fruitflies bearing similar mutations: Fabp7-deficient mice and transgenic flies that express the FABP7...
April 2017: Science Advances
https://www.readbyqxmd.com/read/28425178/sleep-quality-clinical-and-psychological-manifestations-in-women-with-systemic-lupus-erythematosus
#4
Virginia Moraleda, Germán Prados, María P Martínez, Ana I Sánchez, José M Sabio, Elena Miró
AIM: Sleep problems are a common complaint in systemic lupus erythematosus (SLE) patients. We analyzed sleep quality with subjective and objective measures in a sample with SLE and its possible relationships with the main manifestations of the disease. METHODS: Twenty-one women with SLE and 20 healthy women participated in the study. All participants were evaluated with actigraphy for a week and they completed self-report instruments of sleep quality, quality of life, fatigue, anxiety, depression and perceived stress...
April 19, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28424899/a-polysomnographic-study-in-parkinsonian-patients-treated-with-intestinal-levodopa-infusion
#5
Maurizio Zibetti, Alberto Romagnolo, Aristide Merola, Lorenzo Priano, Elisa Montanaro, Serena Angrisano, Antonella Tribolo, Alessandro Cicolin, Leonardo Lopiano
Sleep disorders are very common in advanced Parkinson's disease (PD) and have a significant negative impact on the quality of life of patients. Questionnaire-based studies suggest that sleep quality might improve following levodopa-carbidopa intestinal gel (LCIG) infusion. The objective of this study was to evaluate the impact of LCIG infusion and subsequent oral medication changes on polysomnography (PSG) and sleep symptoms in advanced PD patients. Eleven PD patients underwent PSG at baseline and after 3.8 ± 1...
April 19, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28422847/correlation-between-calpain-10-single-nucleotide-polymorphisms-and-obstructive-sleep-apnea-hypopnoea-syndrome-with-ischemic-stroke-in-a-chinese-population-a-population-based-study
#6
Wei Zhang, Zhi-Ru Zhao, Chang-Fei Dai, Rong Zhang, Jie Chen, Hui-Juan Tian, Yun-Long Wang, Ji-Hong Sun, Qiu-Fang Lian
BACKGROUND: Obstructive sleep apnea-hypopnea syndrome (OSAHS) is a common chronic disorder which is followed by various complications. Calpain-10 belongs to a commonly expressed member of the Calpain-like cysteine protease family, which acts as risk marker for some diseases. The purpose of this study is to elucidate correlation between Calpain-10 single-nucleotide polymorphisms (SNPs) and the incidence of OSAHS followed by ischemic stroke (IS). METHODS: OSAHS patients were divided as OSAHS + IS, OSAHS, and control groups, respectively...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28400259/a-role-for-the-peripheral-immune-system-in-the-development-of-alcohol-use-disorders
#7
REVIEW
Philippe de Timary, Peter Stärkel, Nathalie M Delzenne, Sophie Leclercq
Preclinical studies have largely supported that alcohol-consumption induces the development of an important neuro-inflammation and this neuro-inflammation contributes to alcohol-drinking behaviors, notably through TLR4 and LPS related mechanisms. The neuro-inflammation originates from a direct interaction of ethanol with the neuronal and immune brain cells, but also from the generation of an inflammation at the periphery. Ethanol in particular interacts with the intestine to develop a gut dysbiosis and an increase in gut permeability, that allows the liberation of bacterial fragments to the systemic circulation and induces a pro-inflammatory response in the systemic circulation and peripheral organs, and in particular the liver...
April 8, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28395403/-distribution-of-electroencephalograph-power-density-in-patients-with-severe-obstructive-sleep-apnea-during-different-sleep-stages
#8
Y Deng, X Tian, B Y Chen, N Zhou, M Xia, W W Bai, M M Dou, X Y Liu
Objective: To investigate the variation of electroencephalograph(EEG) power density during different sleep stages in OSA for understanding of the mechanisms underlying the brain dysfunction in OSA as well as its earlier diagnosis and treatment. Methods: Sixteen-channel EEGs from OSA patients and normal controls in stage wake, sleep stage 1, sleep stage 2, sleep stage 3 and rapid eye movement stage were analyzed by time-frequency analysis method. The EEG power density in different frequency bands (including δ, θ, α, σ, β and γ) was respectively compared between the 2 groups...
April 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28392004/-paradox-of-slow-frequencies-are-slow-frequencies-in-upper-cortical-layers-a-neural-predisposition-of-the-level-state-of-consciousness-npc
#9
Georg Northoff
Consciousness research has much focused on faster frequencies like alpha or gamma while neglecting the slower ones in the infraslow (0.001-0.1Hz) and slow (0.1-1Hz) frequency range. These slower frequency ranges have a "bad reputation" though; their increase in power can observed during the loss of consciousness as in sleep, anesthesia, and vegetative state. However, at the same time, slower frequencies have been conceived instrumental for consciousness. The present paper aims to resolve this paradox which I describe as "paradox of slow frequencies"...
April 5, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28391720/effects-of-daily-maladaptive-coping-on-nightly-sleep-in-mothers
#10
Jennifer N Felder, Elissa S Epel, Michael Coccia, Eli Puterman, Aric A Prather
OBJECTIVE: We examined effects of daily rumination and suppression in response to stressors on objective and subjective sleep among mothers. DESIGN: Participants were 183 mothers, including chronically stressed mothers of children with an autism spectrum disorder (M-ASD; n = 92) and age-matched mothers of neurotypical children (M-NT; n = 91). In an intensive longitudinal design, participants provided reports of daily rumination and suppression, nightly objective actigraphy-defined sleep and nightly subjective sleep quality for seven consecutive days at baseline, 9 months and 18 months...
April 9, 2017: Psychology & Health
https://www.readbyqxmd.com/read/28391285/while-isolated-periodic-limb-movement-disorder-significantly-impacts-sleep-depth-and-efficiency-co-morbid-restless-leg-syndrome-mainly-exacerbates-perceived-sleep-quality
#11
Florent-Xavier Hardy De Buisseret, Olivier Mairesse, Johan Newell, Paul Verbanck, Daniel Neu
BACKGROUND: Restless leg syndrome (RLS) and periodic limb movement (PLM) disorder (PLMD) can affect sleep quality and interfere with daytime functioning. Whether the co-morbidity of RLS further worsens daytime symptoms, sleep architecture and quality in patients with PLMs, is not yet fully clarified. METHODS: Sleep (polysomnography) and daytime symptoms of 47 drug-free patients, assigned to isolated PLMD or co-morbid RLS subgroups, were compared to controls in a retrospective cohort-study (n = 501)...
April 8, 2017: European Neurology
https://www.readbyqxmd.com/read/28388406/mutation-of-the-human-circadian-clock-gene-cry1-in-familial-delayed-sleep-phase-disorder
#12
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/28369543/sleep-during-pregnancy-the-numom2b-pregnancy-and-sleep-duration-and-continuity-study
#13
Kathryn J Reid, Francesca L Facco, William A Grobman, Corette B Parker, Marcos Herbas, Shannon Hunter, Robert M Silver, Robert C Basner, George R Saade, Grace W Pien, Shalini Manchanda, Judette M Louis, Chia-Ling Nhan-Chang, Judith H Chung, Deborah A Wing, Hyagriv N Simhan, David M Haas, Jay Iams, Samuel Parry, Phyllis C Zee
Study Objectives: To characterize sleep duration, timing and continuity measures in pregnancy and their association with key demographic variables. Methods: Multi-site prospective cohort study. Women enrolled in the nuMoM2b study (nulliparous women with a singleton gestation) were recruited at the second study visit (16- 21 weeks of gestation) to participate in the Sleep Duration and Continuity Substudy. Women <18 years of age, or with pregestational diabetes or chronic hypertension were excluded from participation...
March 24, 2017: Sleep
https://www.readbyqxmd.com/read/28366323/effect-of-continuous-positive-airway-pressure-on-regional-cerebral-blood-flow-in-patients-with-severe-obstructive-sleep-apnea-syndrome
#14
Jeong Sik Kim, Ji Hye Seo, Mi-Ri Kang, Min Jae Seong, Won Gu Lee, Eun Yeon Joo, Seung Bong Hong
OBJECTIVES: Obstructive sleep apnea (OSA) is commonly associated with neural and cognitive deficits induced by recurrent hypoxemia and sleep fragment. The aims of this study were to use statistical parametric mapping (SPM) to analyze changes in regional cerebral blood flow (rCBF) in untreated patients with severe OSA before and after nasal continuous positive airway pressure (CPAP) treatment, examine the impact of OSA-related variables on rCBF, and assess the therapeutic effect of nasal CPAP treatment...
April 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28364514/actigraphic-sleep-patterns-of-u-s-hispanics-the-hispanic-community-health-study-study-of-latinos
#15
Katherine A Dudley, Jia Weng, Daniela Sotres-Alvarez, Guido Simonelli, Elizabeth Cespedes Feliciano, Maricelle Ramirez, Alberto R Ramos, Jose S Loredo, Kathryn J Reid, Yasmin Mossavar-Rahmani, Phyllis C Zee, Diana A Chirinos, Linda C Gallo, Rui Wang, Sanjay R Patel
Study objective: To assess the extent to which objective sleep patterns vary among U.S. Hispanics/Latinos. Methods: We assessed objective sleep patterns in 2087 participants of the Hispanic Community Health Study/Study of Latinos from 6 Hispanic/Latino subgroups aged 18-64 years who underwent 7 days of wrist actigraphy. Results: The age- and sex-standardized mean (SE) sleep duration was 6.82 (0.05), 6.72 (0.07), 6.61 (0.07), 6.59 (0.06), 6...
February 1, 2017: Sleep
https://www.readbyqxmd.com/read/28364502/altered-cd8-t-cell-lymphocyte-function-and-tc1-cell-stemness-contribute-to-enhanced-malignant-tumor-properties-in-murine-models-of-sleep-apnea
#16
Mahzad Akbarpour, Abdelnaby Khalyfa, Zhuanghong Qiao, Alex Gileles-Hillel, Isaac Almendros, Ramon Farré, David Gozal
Study Objective: The presence of obstructive sleep apnea (OSA) in patients with cancer appears to be accompanied by poorer outcomes. However, the mechanisms underlying such association are unknown. Tumor infiltrating lymphocytes (TILs), including CD8+ T cells, function as cytotoxic T lymphocytes (CTLs) and mount immune responses to cancer by the release of cytolytic enzymes, including granzyme B (GzmB), perforin (Prf), and cytokines such as interferon (IFN)-γ. Methods: Using established in vivo mouse models, we investigated CD8+ T cells and cancer stem cells (CSCs) in intermittent hypoxia (IH) and sleep fragmentation (SF) in the context of tumor environment...
February 1, 2017: Sleep
https://www.readbyqxmd.com/read/28364474/the-neighborhood-social-environment-and-objective-measures-of-sleep-in-the-multi-ethnic-study-of-atherosclerosis
#17
Dayna A Johnson, Guido Simonelli, Kari Moore, Martha Billings, Mahasin S Mujahid, Michael Rueschman, Ichiro Kawachi, Susan Redline, Ana V Diez Roux, Sanjay R Patel
Study objectives: To investigate cross-sectional associations of neighborhood social environment (social cohesion, safety) with objective measures of sleep duration, timing, and disturbances. Methods: A racially/ethnically diverse population of men and women (N = 1949) aged 54 to 93 years participating in the Multi-Ethnic Study of Atherosclerosis Sleep and Neighborhood Ancillary studies. Participants underwent 1-week actigraphy between 2010 and 2013. Measures of sleep duration, timing, and disruption were averaged over all days...
January 1, 2017: Sleep
https://www.readbyqxmd.com/read/28364455/cntnap2-knockout-rats-and-mice-exhibit-epileptiform-activity-and-abnormal-sleep-wake-physiology
#18
Alexia M Thomas, Michael D Schwartz, Michael D Saxe, Thomas S Kilduff
Study Objectives: Although recent innovations have enabled modification of the rat genome, it is unclear whether enhanced utility of rodents as human disease models will result. We compared electroencephalogram (EEG) and behavioral phenotypes of rats and mice with homozygous deletion of Cntnap2, a gene associated with cortical dysplasia-focal epilepsy (CDFE) and autism spectrum disorders (ASD). Methods: Male contactin-associated protein-like 2 (Cntnap2) knockout (KO) and wild-type (WT) rats and male Cntnap2 KO and WT mice were implanted with telemeters to record EEG, electromyogram, body temperature, and locomotor activity...
January 1, 2017: Sleep
https://www.readbyqxmd.com/read/28361630/obstructive-sleep-apnoeahypopnoea-syndrome-and-cognitive-impairments
#19
(no author information available yet)
Obstructive sleep apnoea-hypopnoea is a common condition involving apnoea (absence of breath) and hypopnoea (reduced airflow). It causes intermittent hypoxia and poor quality, fragmented sleep. As a result, daytime functioning is significantly impaired with excessive sleepiness, fatigue and mood problems.
March 31, 2017: Nursing Older People
https://www.readbyqxmd.com/read/28346156/association-of-sleep-characteristics-with-cardiovascular-and-metabolic-risk-factors-in-a-population-sample-the-chicago-area-sleep-study
#20
Samantha E Montag, Kristen L Knutson, Phyllis C Zee, Jeffrey J Goldberger, Jason Ng, Kwang-Youn A Kim, Mercedes R Carnethon
OBJECTIVES: To investigate the association of sleep characteristics with prevalent hypertension, diabetes, and obesity in a multiethnic cohort. DESIGN: This study used a population-based cross-sectional study design. SETTING: Participants were recruited between 2009 and 2011 from Chicago, Illinois, and the surrounding suburbs. PARTICIPANTS: Participants were 492 adults aged 35 to 64years who self-reported as white, black, Hispanic, or Asian and who had a low likelihood of sleep apnea based on the apnea screening questionnaires and 1 night of apnea screening using an in-home device (apnea hypopnea index <15 or oxygen desaturation index <10)...
April 2017: Sleep Health
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