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the effect of sleep deprivation

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https://www.readbyqxmd.com/read/28214594/association-between-light-at-night-melatonin-secretion-sleep-deprivation-and-the-internal-clock-health-impacts-and-mechanisms-of-circadian-disruption
#1
REVIEW
Yvan Touitou, Alain Reinberg, David Touitou
Exposure to Artificial Light At Night (ALAN) results in a disruption of the circadian system, which is deleterious to health. In industrialized countries, 75% of the total workforce is estimated to have been involved in shift work and night work. Epidemiologic studies, mainly of nurses, have revealed an association between sustained night work and a 50-100% higher incidence of breast cancer.The potential and multifactorial mechanisms of the effects include the suppression of melatonin secretion by ALAN, sleep deprivation, and circadian disruption...
February 15, 2017: Life Sciences
https://www.readbyqxmd.com/read/28210999/computational-cognitive-modeling-of-the-temporal-dynamics-of-fatigue-from-sleep-loss
#2
Matthew M Walsh, Glenn Gunzelmann, Hans P A Van Dongen
Computational models have become common tools in psychology. They provide quantitative instantiations of theories that seek to explain the functioning of the human mind. In this paper, we focus on identifying deep theoretical similarities between two very different models. Both models are concerned with how fatigue from sleep loss impacts cognitive processing. The first is based on the diffusion model and posits that fatigue decreases the drift rate of the diffusion process. The second is based on the Adaptive Control of Thought - Rational (ACT-R) cognitive architecture and posits that fatigue decreases the utility of candidate actions leading to microlapses in cognitive processing...
February 16, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28190430/delirium-in-critically-ill-patients
#3
A J C Slooter, R R Van De Leur, I J Zaal
Delirium is common in critically ill patients and associated with increased length of stay in the intensive care unit (ICU) and long-term cognitive impairment. The pathophysiology of delirium has been explained by neuroinflammation, an aberrant stress response, neurotransmitter imbalances, and neuronal network alterations. Delirium develops mostly in vulnerable patients (e.g., elderly and cognitively impaired) in the throes of a critical illness. Delirium is by definition due to an underlying condition and can be identified at ICU admission using prediction models...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28173964/sleep-deprivation-disrupts-the-contribution-of-the-hippocampus-to-the-formation-of-novel-lexical-associations
#4
Virginie Sterpenich, Leonardo Ceravolo, Sophie Schwartz
Sleep is involved in the mechanisms underlying memory consolidation and brain plasticity. Consolidation refers to a process through which labile memories are reorganized into more stable ones. An intriguing but often neglected question concerns how pre-existing knowledge is modified when new information enters memory, and whether sleep can influence this process. We investigated how nonword learning may modify the neural representations of closely-related existing words. We also tested whether sleep contributes to any such effect by comparing a group of participants who slept during the night following a first encoding session to a sleep deprived group...
February 4, 2017: Brain and Language
https://www.readbyqxmd.com/read/28123668/caffeine-and-sleep-deprivation-mediated-changes-in-open-field-behaviours-stress-response-and-antioxidant-status-in-mice
#5
J Olakunle Onaolapo, Y Adejoke Onaolapo, A Moses Akanmu, Gbola Olayiwola
OBJECTIVES: Effects of daily caffeine consumption on open-field behaviours, serum corticosterone and brain antioxidant levels were investigated after six hours of total sleep-deprivation in prepubertal mice. We tested the hypothesis that daily caffeine consumption may significantly alter behaviour, stress and antioxidative response of prepubertal mice to an acute episode of total sleep-deprivation. METHODS: Prepubertal Swiss mice of both sexes were assigned to two main groups of 120 each (subdivided into 6 groups of 10 each, based on sex), and administered vehicle or graded oral doses of caffeine (10, 20, 40, 80 and 120 mg/kg/day) for 14 days...
July 2016: Sleep Science
https://www.readbyqxmd.com/read/28123659/sleep-patterns-co-sleeping-and-parent-s-perception-of-sleep-among-school-children-comparison-of-domicile-and-gender
#6
Ravi Gupta, Sunil Dutt Kandpal, Deepak Goel, Nidhi Mittal, Mohan Dhyani, Manish Mittal
: This study was aimed at assessment of sleep schedule, pre-sleep behavior, co-sleeping and parent's perception of sleep of school going children. METHOD: Four schools each, from urban and rural area were included. Sleep patterns were assessed using the validated Hindi version of Childhood-Sleep-Habit-Questionnaire. Comparison was made between urban and rural group and between boys and girls. Interaction of gender, domicile and school-type was examined on the sleep patterns...
July 2016: Sleep Science
https://www.readbyqxmd.com/read/28123655/sleep-immunity-and-shift-workers-a-review
#7
REVIEW
Carlos Mauricio Oliveira de Almeida, Adriana Malheiro
To date, shift workers represent between 15% and 25% of the modern day workforce. Work time poses a great challenge to workers as it requires that they balance productivity and sleep time between shifts. As a result, these workers experience chronic sleep deprivation with increased fatigue and drowsiness due to this sleep deprivation. The impact of this kind of work on the immune system is not yet known. We conducted a literature review with the aim of evaluating articles on this specific type of work's effects on sleep and immunity...
July 2016: Sleep Science
https://www.readbyqxmd.com/read/28119303/effects-of-sleep-loss-on-subjective-complaints-and-objective-neurocognitive-performance-as-measured-by-the-immediate-post-concussion-assessment-and-cognitive-testing
#8
Ryan P J Stocker, Hassen Khan, Luke Henry, Anne Germain
OBJECTIVE: This study examined the effects of total and partial sleep deprivation on subjective symptoms and objective neurocognitive performance, as measured by the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) in a sample of healthy adults. METHOD: One-hundred and two, right-handed, healthy participants (between ages 18 and 30 years old) completed three consecutive nights in the sleep laboratory with concurrent continuous polysomnography monitoring...
January 23, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28116833/prevalence-of-oncologists-in-distress-systematic-review-and-meta-analysis
#9
REVIEW
Asta Medisauskaite, Caroline Kamau
OBJECTIVE: High mortality from cancer and rising patient numbers can trigger distress among oncologists because of a heavy and emotionally demanding workload. This systematic review and meta-analysis assesses the prevalence of high levels of distress among oncologists. METHODS: The PRISMA protocol is registered at the PROSPERO international prospective register (Ref. 2015:CRD42015016325). We categorized data items according to the following distress factors: burnout, psychiatric morbidity, stress, depression, disrupted sleep, stress-induced physical symptoms, and substance use...
January 23, 2017: Psycho-oncology
https://www.readbyqxmd.com/read/28109896/the-nlrp3-inflammasome-modulates-sleep-and-nrem-sleep-delta-power-induced-by-spontaneous-wakefulness-sleep-deprivation-and-lipopolysaccharide
#10
Mark R Zielinski, Dmitry Gerashchenko, Svetlana A Karpova, Varun Konanki, Robert W McCarley, Fayyaz S Sutterwala, Robert E Strecker, Radhika Basheer
Both sleep loss and pathogens can enhance brain inflammation, sleep, and sleep intensity as indicated by electroencephalogram delta (δ) power. The pro-inflammatory cytokine interleukin-1 beta (IL-1β) is increased in the cortex after sleep deprivation (SD) and in response to the Gram-negative bacterial cell-wall component lipopolysaccharide (LPS), although the exact mechanisms governing these effects are unknown. The nucleotide-binding domain and leucine-rich repeat protein-3 (NLRP3) inflammasome protein complex forms in response to changes in the local environment and, in turn, activates caspase-1 to convert IL-1β into its active form...
January 18, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28096295/does-selection-for-short-sleep-duration-explain-human-vulnerability-to-alzheimer-s-disease
#11
Randolph M Nesse, Caleb E Finch, Charles L Nunn
Compared with other primates, humans sleep less and have a much higher prevalence of Alzheimer 's disease (AD) pathology. This article reviews evidence relevant to the hypothesis that natural selection for shorter sleep time in humans has compromised the efficacy of physiological mechanisms that protect against AD during sleep. In particular, the glymphatic system drains interstitial fluid from the brain, removing extra-cellular amyloid beta (eAβ) twice as fast during sleep. In addition, melatonin - a peptide hormone that increases markedly during sleep - is an effective antioxidant that inhibits the polymerization of soluble eAβ into insoluble amyloid fibrils that are associated with AD...
January 16, 2017: Evolution, Medicine, and Public Health
https://www.readbyqxmd.com/read/28089706/a-sipometer-for-measuring-motivation-to-consume-and-reward-value-of-foods-and-beverages-in-humans-description-and-proof-of-principle
#12
P S Hogenkamp, A Shechter, M-P St-Onge, A Sclafani, H R Kissileff
New methods, derived from animal work, for measuring food reward value (i.e. reinforcing value of food), and motivation (i.e. strength of desire) to consume, in humans are described and validated. A sipping device (sipometer) was developed that permits access to a liquid food or beverage on two reward schedules: continuous reinforcement (CR) and progressively increasing time spent exerting pressure on a straw (PR-schedule). In addition, a pictorial scale showing a cup, from which the 'amount wanted' could be marked was used to pre-test potential consumption...
January 13, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28089456/protective-effects-of-exercise-training-on-endothelial-dysfunction-induced-by-total-sleep-deprivation-in-healthy-subjects
#13
Fabien Sauvet, Pierrick J Arnal, Pierre Emmanuel Tardo-Dino, Catherine Drogou, Pascal Van Beers, Clément Bougard, Arnaud Rabat, Garance Dispersyn, Alexandra Malgoyre, Damien Leger, Danielle Gomez-Merino, Mounir Chennaoui
BACKGROUND: Sleep loss is a risk factor for cardiovascular events mediated through endothelial dysfunction. AIMS: To determine if 7weeks of exercise training can limit cardiovascular dysfunction induced by total sleep deprivation (TSD) in healthy young men. METHODS: 16 subjects were examined during 40-h TSD, both before and after 7weeks of interval exercise training. Vasodilatation induced by ACh, insulin and heat (42°C) and pulse wave velocity (PWV), blood pressure and heart rate (HR) were assessed before TSD (controlday), during TSD, and after one night of sleep recovery...
January 5, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28087334/the-short-and-long-term-proteomic-effects-of-sleep-deprivation-on-the-cortical-and-thalamic-synapses
#14
Attila Simor, Balázs András Györffy, Péter Gulyássy, Katalin Völgyi, Vilmos Tóth, Mihail Ivilinov Todorov, Viktor Kis, Zsolt Borhegyi, Zoltán Szabó, Tamás Janáky, László Drahos, Gábor Juhász, Katalin Adrienna Kékesi
Acute total sleep deprivation (SD) impairs memory consolidation, attention, working memory and perception. Structural, electrophysiological and molecular experimental approaches provided evidences for the involvement of sleep in synaptic functions. Despite the wide scientific interest on the effects of sleep on the synapse, there is a lack of systematic investigation of sleep-related changes in the synaptic proteome. We isolated parietal cortical and thalamic synaptosomes of rats after 8h of total SD by gentle handling and 16h after the end of deprivation to investigate the short- and longer-term effects of SD on the synaptic proteome, respectively...
January 10, 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/28087236/determination-of-the-feasibility-of-a-multicomponent-intervention-program-to-prevent-delirium-in-the-intensive-care-unit-a-modified-rand-delphi-study
#15
Annelies Wassenaar, Mark van den Boogaard, Underpin-Icu Study Group, Lisette Schoonhoven, Peter Pickkers
BACKGROUND: Delirium is common in Intensive Care Unit (ICU) patients and associated with poor outcome. In non-ICU patients a multicomponent intervention program with non-pharmacological interventions has shown to reduce delirium. Currently, there is insufficient evidence regarding the effects of such a program in ICU patients. We developed a draft program based on a review. As most studies were conducted in non-ICU patients, the feasibility of the program in ICU patients needs to be assessed before investigating its effectiveness...
January 10, 2017: Australian Critical Care: Official Journal of the Confederation of Australian Critical Care Nurses
https://www.readbyqxmd.com/read/28070566/interleukin-37-expression-in-mice-alters-sleep-responses-to-inflammatory-agents-and-influenza-virus-infection
#16
Christopher J Davis, Mark R Zielinski, Danielle Dunbrasky, Ping Taishi, Charles A Dinarello, James M Krueger
Multiple interactions between the immune system and sleep are known, including the effects of microbial challenge on sleep or the effects of sleep loss on facets of the immune response. Cytokines regulate, in part, sleep and immune responses. Here we examine the role of an anti-inflammatory cytokine, interleukin-37 (IL-37) on sleep in a mouse strain that expresses human IL-37b (IL37tg mice). Constitutive expression of the IL-37 gene in the brains of these mice under resting conditions is low; however, upon an inflammatory stimulus, expression increases dramatically...
June 2017: Neurobiology of Sleep and Circadian Rhythms
https://www.readbyqxmd.com/read/28065687/restless-legs-syndrome-and-cardiovascular-disease-a-research-roadmap
#17
REVIEW
Daniel J Gottlieb, Virend K Somers, Naresh M Punjabi, John W Winkelman
In this paper, we first critically appraise the epidemiologic literature examining the association of restless legs syndrome (RLS) with cardiovascular disease (CVD) and then consider whether lessons learned from the study of cardiovascular consequences of other sleep disorders might inform a research agenda to examine the potential mechanisms of cardiovascular morbidity of RLS. Cross-sectional and longitudinal studies are both mixed as to whether there is a meaningful association of RLS and CVD. On the other hand, numerous cross-sectional and longitudinal observational studies have shown a strong association of obstructive sleep apnea (OSA) with CVD risk...
October 27, 2016: Sleep Medicine
https://www.readbyqxmd.com/read/28065222/the-effect-of-sleep-deprivation-on-coronary-heart-disease
#18
Yuan Rong, Wang Jie, Guo Li-Li
Sleep deprivation (SD) has been associated with an increased morbidity and mortality of coronary heart disease (CHD). SD could induce autonomic nervous dysfunction, hypertension, arrhythmia, hormonal dysregulation, oxidative stress, endothelial dysfunction, inflammation and metabolic disorder in CHD patients. This paper reviewed the study results of SD in clinical trials and animal experiments and concluded that SD was associated with cardiovascular risk factors, which aggravated CHD in pathogenesis and outcomes...
November 20, 2016: Chinese Medical Sciences Journal, Chung-kuo i Hsüeh K'o Hsüeh Tsa Chih
https://www.readbyqxmd.com/read/28061506/role-of-rem-sleep-melanin-concentrating-hormone-and-orexin-hypocretin-systems-in-the-sleep-deprivation-pre-ischemia
#19
Marta Pace, Antoine Adamantidis, Laura Facchin, Claudio Bassetti
STUDY OBJECTIVES: Sleep reduction after stroke is linked to poor recovery in patients. Conversely, a neuroprotective effect is observed in animals subjected to acute sleep deprivation (SD) before ischemia. This neuroprotection is associated with an increase of the sleep, melanin concentrating hormone (MCH) and orexin/hypocretin (OX) systems. This study aims to 1) assess the relationship between sleep and recovery; 2) test the association between MCH and OX systems with the pathological mechanisms of stroke...
2017: PloS One
https://www.readbyqxmd.com/read/28046043/effects-of-sleep-deprivation-on-phase-synchronization-as-assessed-by-wavelet-phase-coherence-analysis-of-prefrontal-tissue-oxyhemoglobin-signals
#20
Lingguo Bu, Ming Zhang, Jianfeng Li, Fangyi Li, Heshan Liu, Zengyong Li
PURPOSE: To reveal the physiological mechanism of the decline in cognitive function after sleep deprivation, a within-subject study was performed to assess sleep deprivation effects on phase synchronization, as revealed by wavelet phase coherence (WPCO) analysis of prefrontal tissue oxyhemoglobin signals. MATERIALS AND METHODS: Twenty subjects (10 male and 10 female, 25.5 ± 3.5 years old) were recruited to participate in two tests: one without sleep deprivation (group A) and the other with 24 h of sleep deprivation (group B)...
2017: PloS One
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