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https://www.readbyqxmd.com/read/28096295/does-selection-for-short-sleep-duration-explain-human-vulnerability-to-alzheimer-s-disease
#1
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/28093374/predictors-of-pharmacological-intervention-in-adolescents-with-protracted-symptoms-after-sports-related-concussion
#2
Shanti M Pinto, Maria F Twichell, Luke C Henry
BACKGROUND: Though recovery after concussion is spontaneous and typically occurs within two to three weeks, a subset of adolescents develop persistent symptoms after a sports-related concussion. Medications are frequently prescribed as part of a comprehensive treatment approach to alleviate these symptoms; however, there are no guidelines for prescription of pharmacologic therapy after concussion. OBJECTIVE: To investigate common factors that are associated with the use of medications (anti-epileptic, anti-depressant, neurostimulant, or sleeping medication) during recovery from a sports-related concussion...
January 13, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28075519/an-update-of-management-of-insomnia-in-patients-with-chronic-orofacial-pain
#3
REVIEW
Galit Almoznino, Yaron Haviv, Yair Sharav, Rafael Benoliel
In this review we discuss the management of chronic orofacial pain (COFP) patients with insomnia. Diagnostic work-up and follow-up routines of COFP patients should include assessment of sleep problems. Management is based on a multidisciplinary approach, addressing the factors that modulate the pain experience as well as insomnia and including both non-pharmacological and pharmacological modalities. Parallel to treatment, patients should receive therapy for co-morbid medical and psychiatric disorders, and possible substance abuse that may be that may trigger or worsen the COFP and/or their insomnia...
January 11, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28070878/effects-of-caffeic-acid-and-quercetin-on-in-vitro-permeability-metabolism-and-in-vivo-pharmacokinetics-of-melatonin-in-rats-potential-for-herb-drug-interaction
#4
Snehasis Jana, Himanshu Rastogi
BACKGROUND AND OBJECTIVES: Melatonin is a popular dietary supplement and also considered as pharmaceutical product for sleep disorders. Caffeic acid and quercetin are widely distributed in leafy vegetables, fruits, tea extract, and both are used as natural antioxidant. There is an immense concern for health researchers to study the herb/food-drug interactions of melatonin. It is mainly metabolized by CYP1A2 in human so that herbs/foods containing cytochrome P450 (CYP) inhibitors can affect pharmacokinetics of melatonin...
January 9, 2017: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28064405/a-systematic-review-of-circadian-function-chronotype-and-chronotherapy-in-attention-deficit-hyperactivity-disorder
#5
REVIEW
Andrew N Coogan, Niall M McGowan
Reports of sleep disturbances in attention deficit hyperactivity disorder (ADHD) are common in both children and adults; however, the aetiology of such disturbances is poorly understood. One potentially important mechanism which may be implicated in disrupted sleep in ADHD is the circadian CLOCK, a known key regulator of the sleep/wake cycle. In this systematic review, we analyse the evidence for circadian rhythm changes associated with ADHD, as well as assessing evidence for therapeutic approaches involving the circadian CLOCK in ADHD...
January 7, 2017: Attention Deficit and Hyperactivity Disorders
https://www.readbyqxmd.com/read/28061873/prophylactic-melatonin-for-delirium-in-intensive-care-pro-medic-study-protocol-for-a-randomised-controlled-trial
#6
F Eduardo Martinez, Matthew Anstey, Andrew Ford, Brigit Roberts, Miranda Hardie, Robert Palmer, Lynn Choo, David Hillman, Michael Hensley, Erin Kelty, Kevin Murray, Bhajan Singh, Bradley Wibrow
BACKGROUND: Delirium is an acute state of brain dysfunction characterised by fluctuating inattention and cognitive disturbances, usually due to illness. It occurs commonly in the intensive care unit (ICU), and it is associated with greater morbidity and mortality. It is likely that disturbances of sleep and of the day-night cycle play a significant role. Melatonin is a naturally occurring, safe and cheap hormone that can be administered to improve sleep. The main aim of this trial will be to determine whether prophylactic melatonin administered to critically ill adults, when compared with placebo, decreases the rate of delirium...
January 6, 2017: Trials
https://www.readbyqxmd.com/read/28045969/blue-light-filtering-spectacle-lenses-optical-and-clinical-performances
#7
Tsz Wing Leung, Roger Wing-Hong Li, Chea-Su Kee
PURPOSES: To evaluate the optical performance of blue-light filtering spectacle lenses and investigate whether a reduction in blue light transmission affects visual performance and sleep quality. METHODS: Experiment 1: The relative changes in phototoxicity, scotopic sensitivity, and melatonin suppression of five blue-light filtering plano spectacle lenses were calculated based on their spectral transmittances measured by a spectrophotometer. Experiment 2: A pseudo-randomized controlled study was conducted to evaluate the clinical performance of two blue-light filtering spectacle lenses (BF: blue-filtering anti-reflection coating; BT: brown-tinted) with a regular clear lens (AR) serving as a control...
2017: PloS One
https://www.readbyqxmd.com/read/28042611/bedtime-and-evening-light-exposure-influence-circadian-timing-in-preschool-age-children-a-field-study
#8
Lameese D Akacem, Kenneth P Wright, Monique K LeBourgeois
Light exposure and sleep timing are two factors that influence inter-individual variability in the timing of the human circadian clock. The aim of this study was to quantify the degree to which evening light exposure predicts variance in circadian timing over and above bedtime alone in preschool children. Participants were 21 children ages 4.5-5.0 years (4.7 ± 0.2 years; 9 females). Children followed their typical sleep schedules for 4 days during which time they wore a wrist actigraph to assess sleep timing and a pendant light meter to measure minute-by-minute illuminance levels in lux...
November 2016: Neurobiology of Sleep and Circadian Rhythms
https://www.readbyqxmd.com/read/28028514/the-effect-of-melatonin-on-endothelial-dysfunction-in-patient-undergoing-coronary-artery-bypass-grafting-surgery
#9
Shaghayegh Haghjooy Javanmard, Kiyan Heshmat-Ghahdarijani, Mohsen Mirmohammad-Sadeghi, Sayed Ali Sonbolestan, Amin Ziayi
BACKGROUND: In this study, we investigated the effect of melatonin administration on four markers of endothelial cell function including intercellular adhesion molecule (ICAM), vascular cell adhesion molecule (VCAM), C-reactive protein (CRP), and nitric oxide (NO) on patients with three vessels coronary disease. MATERIALS AND METHODS: This double-blind, randomized, controlled trial study was conducted on 39 patients (32 men and 7 women) with three vessels coronary disease...
2016: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28017916/effects-of-smartphone-use-with-and-without-blue-light-at-night-in%C3%A2-healthy-adults-a-randomized-double-blind-cross-over-placebo-controlled-comparison
#10
Jung-Yoon Heo, Kiwon Kim, Maurizio Fava, David Mischoulon, George I Papakostas, Min-Ji Kim, Dong Jun Kim, Kyung-Ah Judy Chang, Yunhye Oh, Bum-Hee Yu, Hong Jin Jeon
Smartphones deliver light to users through Light Emitting Diode (LED) displays. Blue light is the most potent wavelength for sleep and mood. This study investigated the immediate effects of smartphone blue light LED on humans at night. We investigated changes in serum melatonin levels, cortisol levels, body temperature, and psychiatric measures with a randomized, double-blind, cross-over, placebo-controlled design of two 3-day admissions. Each subject played smartphone games with either conventional LED or suppressed blue light from 7:30 to 10:00PM (150 min)...
December 12, 2016: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28012610/secondary-to-excessive-melatonin-synthesis-the-consumption-of-tryptophan-from-outside-the-blood-brain-barrier-and-melatonin-over-signaling-in-the-pars-tuberalis-may-be-central-to-the-pathophysiology-of-winter-depression
#11
José Carlos Pereira, Márcia Pradella Hallinan, Rosana Cardoso Alves
Seasonal affective disorder is defined as recurrent episodes of major depression, mania, or hypomania with seasonal onset and remission. In this class of mood disturbances, a unipolar major depressive disorder known as winter depression is common in populations living in northern latitudes far from the equator. Winter depression repeatedly occurs in the autumn or winter and remits in the spring or summer, and its etiopathogenesis is currently unknown. However, one can surmise that excessive melatonin production during the reduced duration of daily sunlight in the autumn and winter plays a role in its pathophysiology...
January 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28008257/non-24-hour-sleep-wake-syndrome-improved-by-low-dose-valproic-acid-a-case-report
#12
Masatake Kurita, Takahiro Moriya, Satoshi Nishino, Eishin Hirata, Noriyasu Hirasawa, Yoshiro Okubo, Tadahiro Sato
A woman was diagnosed with non-24-hour sleep-wake syndrome and depressive symptoms. Her depressive symptoms did not respond to standard doses of several antidepressants or mood stabilizers. Furthermore, her sleep-wake cycle remained non-entrained despite treatment with a melatonin-related drug, vitamin B12, and phototherapy. Ultimately, her sleep-wake rhythm was restored to a 24-hour pattern with a low dose of valproic acid, and her depressive symptoms tended to improve as a result of synchronization without antidepressants...
2016: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28001756/transcranial-red-near-infrared-light-emitting-diode-therapy-to-improve-cognition-in-chronic-traumatic-brain-injury
#13
Margaret A Naeser, Paula I Martin, Michael D Ho, Maxine H Krengel, Yelena Bogdanova, Jeffrey A Knight, Megan K Yee, Ross Zafonte, Judith Frazier, Michael R Hamblin, Bang-Bon Koo
We review the general topic of traumatic brain injury (TBI) and our research utilizing transcranial photobiomodulation (tPBM) to improve cognition in chronic TBI using red/near-infrared (NIR) light-emitting diodes (LEDs) to deliver light to the head. tPBM improves mitochondrial function increasing oxygen consumption, production of adenosine triphosphate (ATP), and improving cellular energy stores. Nitric oxide is released from the cells increasing regional blood flow in the brain. Review of published studies: In our previously published study, 11 chronic TBI patients with closed-head TBI caused by different accidents (motor vehicle accident, sports-related, improvised explosive device blast injury) and exhibiting long-lasting cognitive dysfunction received 18 outpatient treatments (Monday, Wednesday, Friday for 6 weeks) starting at 10 months to 8 years post-TBI...
December 2016: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/27996309/the-association-between-artificial-light-at-night-and-prostate-cancer-in-gwangju-city-and-south-jeolla-province-of-south-korea
#14
Ka Young Kim, Eunil Lee, Yun Jeong Kim, Jinsun Kim
ABSRACT Exposure to artificial light at night (ALAN) has been reported to be associated with various pathological changes including sleep deprivation, circadian rhythm disruption, and melatonin suppression with increase in various cancers such as breast or prostate cancers. In this study, we sought to elucidate the association between ALAN and prostate cancer in 27 districts within Gwangju City and urban and rural areas from South Jeolla Province in South Korea. We analyzed the correlation between ALAN and the incidence of a range of cancers by Poisson regression analysis, after adjustment for confounding risk factors, such as smoking, drinking, obesity, stress, air pollution (particulate matter <10 μm in diameter), urbanization (proportion of urbanized area), and the cancer screening rate...
December 20, 2016: Chronobiology International
https://www.readbyqxmd.com/read/27990327/circadian-based-therapies-for-circadian-rhythm-sleep-wake-disorders
#15
Helen J Burgess, Jonathan S Emens
This review summarizes recent developments relevant to the treatment of circadian rhythm sleep-wake disorders. The clinical practice guidelines for the treatment of intrinsic circadian rhythm sleep-wake disorders is described, followed by recent treatment studies for delayed sleep-wake phase disorder, non-24 hour sleep-wake disorder, irregular sleep-wake disorder and shift work. New methods to estimate circadian phase, including home saliva collection to estimate the dim light melatonin onset, circadian questionnaires and general rules to guide light and exogenous melatonin treatments are described...
September 2016: Current Sleep Medicine Reports
https://www.readbyqxmd.com/read/27987529/melatonin-promotes-circadian-rhythm-induced-proliferation-through-interaction-of-clock-hdac3-c-myc-in-mice-adipose-tissue
#16
Zhenjiang Liu, Lu Gan, Dan Luo, Chao Sun
Melatonin is synthesized in the pineal gland and controls circadian rhythm of peripheral adipose tissue, resulting in changes in body weight. Although core regulatory components of clock rhythmicity have been defined, insight into the mechanisms of circadian rhythm-mediated proliferation in adipose tissue is still limited. Here, we showed that melatonin (20 mg/kg/day) promoted circadian and proliferation processes in white adipose tissue. The circadian amplitudes of brain and muscle aryl hydrocarbon receptor nuclear translocator-like 1 (Bmal1, p < 0...
December 17, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27984243/chronic-obstructive-pulmonary-disease-and-sleep-related-disorders
#17
Sheila C Tsai
PURPOSE OF REVIEW: Sleep related disorders are common and under-recognized in the chronic obstructive pulmonary disease (COPD) population. COPD symptoms can disrupt sleep. Similarly, sleep disorders can affect COPD. This review highlights the common sleep disorders seen in COPD patients, their impact, and potential management. RECENT FINDINGS: Treatment of sleep disorders may improve quality of life in COPD patients. Optimizing inhaler therapy improves sleep quality...
December 15, 2016: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/27981356/chronomedicine-and-type-2-diabetes-shining-some-light-on-melatonin
#18
REVIEW
Andrew C Forrestel, Susanne U Miedlich, Michael Yurcheshen, Steven D Wittlin, Michael T Sellix
In mammals, the circadian timing system drives rhythms of physiology and behaviour, including the daily rhythms of feeding and activity. The timing system coordinates temporal variation in the biochemical landscape with changes in nutrient intake in order to optimise energy balance and maintain metabolic homeostasis. Circadian disruption (e.g. as a result of shift work or jet lag) can disturb this continuity and increase the risk of cardiometabolic disease. Obesity and metabolic disease can also disturb the timing and amplitude of the clock in multiple organ systems, further exacerbating disease progression...
December 16, 2016: Diabetologia
https://www.readbyqxmd.com/read/27979371/melatonin-premedication-improves-quality-of-recovery-following-bariatric-surgery-a-double-blind-placebo-controlled-prospective-study
#19
Michal Ivry, Goitein David, Welly Wiam, Berkenstadt Haim
BACKGROUND: Melatonin has hypnotic, sedative, analgesic, anti-inflammatory, and antioxidant properties, and is a widely used sleep agent. OBJECTIVES: Our aim was to evaluate the effect of melatonin premedication on postoperative recovery in patients undergoing bariatric surgery. SETTING: University Hospital, Israel. METHODS: Patients undergoing bariatric surgery were randomized to receive either 5 mg melatonin (M group) or placebo (P group) once on the night before surgery and again 2 hours before surgery...
November 3, 2016: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/27966269/the-effect-of-blue-blocking-and-neutral-intraocular-lenses-on-circadian-photoentrainment-and-sleep-one-year-after-cataract-surgery
#20
Adam Elias Brøndsted, Birgitte Haargaard, Birgit Sander, Henrik Lund-Andersen, Poul Jennum, Line Kessel
PURPOSE: To compare the long-term effect on circadian photoentrainment and sleep in patients implanted with neutral and blue-blocking intraocular lenses 1 year after cataract surgery. METHODS: Randomized, controlled trial involving 67 patients with age-related cataract. Intervention was cataract surgery with implantation of either a neutral or a blue-blocking intraocular lens (IOL). Main outcome was activation of the intrinsically photosensitive retinal ganglion cells (ipRGC) measured by chromatic pupillometry...
December 14, 2016: Acta Ophthalmologica
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