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Melatonin sleep

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https://www.readbyqxmd.com/read/28819865/melatonin-mitochondria-and-the-metabolic-syndrome
#1
REVIEW
Daniel P Cardinali, Daniel E Vigo
A number of risk factors for cardiovascular disease including hyperinsulinemia, glucose intolerance, dyslipidemia, obesity, and elevated blood pressure are collectively known as metabolic syndrome (MS). Since mitochondrial activity is modulated by the availability of energy in cells, the disruption of key regulators of metabolism in MS not only affects the activity of mitochondria but also their dynamics and turnover. Therefore, a link of MS with mitochondrial dysfunction has been suspected since long. As a chronobiotic/cytoprotective agent, melatonin has a special place in prevention and treatment of MS...
August 17, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28808490/the-influence-of-intermittent-fasting-on-the-circadian-pattern-of-melatonin-while-controlling-for-caloric-intake-energy-expenditure-light-exposure-and-sleep-schedules-a-preliminary-report
#2
Aljohara S Almeneessier, Ahmed S Bahammam, Munir M Sharif, Salman A Bahammam, Samar Z Nashwan, Seithikurippu R Pandi Perumal, Daniel P Cardinali, Mohammad Alzoghaibi
AIMS: We hypothesized that if we control for food composition, caloric intake, light exposure, sleep schedule, and exercise, intermittent fasting would not influence the circadian pattern of melatonin. Therefore, we designed this study to assess the effect of intermittent fasting on the circadian pattern of melatonin. METHODS: Eight healthy volunteers with a mean age of 26.6 ± 4.9 years and body mass index of 23.7 ± 3.5 kg/m(2) reported to the Sleep Disorders Center (the laboratory) on four occasions: (1) adaptation, (2) 4 weeks before Ramadan while performing Islamic intermittent fasting for 1 week (fasting outside Ramadan [FOR]), (3) 1 week before Ramadan (nonfasting baseline [BL]), and (4) during the 2(nd) week of Ramadan while fasting (Ramadan)...
July 2017: Annals of Thoracic Medicine
https://www.readbyqxmd.com/read/28799778/how-important-is-tryptophan-in-human-health
#3
Joanna Kałużna-Czaplińska, Paulina Gątarek, Salvatore Chirumbolo, Max Stanley Chartrand, Geir Bjørklund
Tryptophan (Trp) is an amino acid and an essential component of the human diet. It plays a crucial role in many metabolic functions. Clinicians can use Trp levels in the course of diagnosing various metabolic disorders and the symptoms associated with those diseases. Furthermore, supplementation with this amino acid is considered in the treatment of depression and sleep disorders, mainly due to the Trp relationship with the synthesis of serotonin (5-HT) and melatonin. It is also used in helping to resolve cognitive disorders, anxiety, or neurodegenerative diseases...
August 11, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28790405/differential-impact-in-young-and-older-individuals-of-blue-enriched-white-light-on-circadian-physiology-and-alertness-during-sustained-wakefulness
#4
Virginie Gabel, Carolin F Reichert, Micheline Maire, Christina Schmidt, Luc J M Schlangen, Vitaliy Kolodyazhniy, Corrado Garbazza, Christian Cajochen, Antoine U Viola
We tested the effect of different lights as a countermeasure against sleep-loss decrements in alertness, melatonin and cortisol profile, skin temperature and wrist motor activity in healthy young and older volunteers under extendend wakefulness. 26 young [mean (SE): 25.0 (0.6) y)] and 12 older participants [(mean (SE): 63.6 (1.3) y)] underwent 40-h of sustained wakefulness during 3 balanced crossover segments, once under dim light (DL: 8 lx), and once under either white light (WL: 250 lx, 2,800 K) or blue-enriched white light (BL: 250 lx, 9,000 K) exposure...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28777659/baduanjin-exercise-for-insomnia-a-systematic-review-and-meta-analysis
#5
Yun-Han Jiang, Cheng Tan, Shuai Yuan
Background Baduanjin exercise is thought to improve sleep quality and relieve insomnia. This study therefore aimed to assess the effects of Baduanjin on the management of insomnia. Methods A systematic literature search was conducted using PubMed, EMBASE, the Cochrane Library, Clinicaltrials.gov, WANFANG, the Chinese Scientific Journal Database (VIP), Chinese National Knowledge Infrastructure (CNKI), Chinese Biomedical and Medical Database (CBM) and the Chinese Clinical Trial Registry to identify all randomized controlled trials (RCTs) and prospective controlled trials on the efficacy of Baduanjin for insomnia...
August 4, 2017: Behavioral Sleep Medicine
https://www.readbyqxmd.com/read/28777177/chronic-insomnia-disorder
#6
Alon Y Avidan, David N Neubauer
PURPOSE OF REVIEW: Neurologists, along with all health care providers, commonly encounter patients with insomnia, which is a condition that impacts patients' underlying neurologic conditions in a bidirectional manner. While chronic insomnia is one of the most common sleep disturbances, only a small proportion of individuals with this condition discuss their sleep problems with their providers. When insomnia is described, it is more often in relationship to another medical problem, as opposed to an independent condition...
August 2017: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/28777176/circadian-rhythm-sleep-wake-disorders
#7
Milena Pavlova
PURPOSE OF REVIEW: The endogenous circadian rhythms are one of the cardinal processes that control sleep. They are self-sustaining biological rhythms with a periodicity of approximately 24 hours that may be entrained by external zeitgebers (German for time givers), such as light, exercise, and meal times. This article discusses the physiology of the circadian rhythms, their relationship to neurologic disease, and the presentation and treatment of circadian rhythm sleep-wake disorders...
August 2017: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/28774755/human-seasonal-and-circadian-studies-in-antarctica-halley-75-0-s
#8
Josephine Arendt, Benita Middleton
Living for extended periods in Antarctica exposes base personnel to extremes of daylength (photoperiod) and temperature. At the British Antarctic Survey base of Halley, 75(0)S, the sun does not rise for 110 d in the winter and does not set for 100 d in summer. Photoperiod is the major time cue governing the timing of seasonal events such as reproduction in many species. The neuroendocrine signal providing photoperiodic information to body physiology is the duration of melatonin secretion which reflects the length of the night: longer in the short days of winter and shorter in summer...
July 31, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28764741/the-role-of-melatonin-in-the-onset-and-progression-of-type-3-diabetes
#9
REVIEW
Juhyun Song, Daniel J Whitcomb, Byeong C Kim
Alzheimer's disease (AD) is defined by the excessive accumulation of toxic peptides, such as beta amyloid (Aβ) plaques and intracellular neurofibrillary tangles (NFT). The risk factors associated with AD include genetic mutations, aging, insulin resistance, and oxidative stress. To date, several studies that have demonstrated an association between AD and diabetes have revealed that the common risk factors include insulin resistance, sleep disturbances, blood brain barrier (BBB) disruption, and altered glucose homeostasis...
August 1, 2017: Molecular Brain
https://www.readbyqxmd.com/read/28735262/effectiveness-of-melatonin-in-treating-sleep-problems-in-children-with-intellectual-disability
#10
Irwin Gill, Jacqueline McBrien
No abstract text is available yet for this article.
July 22, 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28732130/abnormalities-in-the-24-hour-rhythm-of-skin-temperature-in-cirrhosis-sleep-wake-and-general-clinical-implications
#11
Maria Garrido, Desy Saccardo, Michele De Rui, Elia Vettore, Alberto Verardo, Paolo Carraro, Nicola Di Vitofrancesco, Ali R Mani, Paolo Angeli, Massimo Bolognesi, Sara Montagnese
BACKGROUND & AIMS: Sleep preparation/onset are associated with peripheral vasodilatation and a decrease in body temperature. The hyperdynamic syndrome exhibited by patients with cirrhosis may impinge on sleep preparation, thus contributing to their difficulties falling asleep. The aim of this study was the assessment of skin temperature, in relation to sleep-wake patterns, in patients with cirrhosis. METHODS: Fifty three subjects were initially recruited, and 46 completed the study...
July 21, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28730123/iprgcs-possible-causation-accounts-for-the-higher-prevalence-of-sleep-disorders-in-glaucoma-patients
#12
Zhen-Zhen Guo, Shan-Ming Jiang, Li-Ping Zeng, Li Tang, Ni Li, Zhu-Ping Xu, Xin Wei
Sleep accounts for a third of one's lifetime, partial or complete deprivation of sleep could elicit sever disorders of body function. Previous studies have reported the higher prevalence of sleep disorders in glaucoma patients, but the definite mechanism for this phenomenon is unknown. On the other hand, it is well known by us that the intrinsically photosensitive retinal ganglion cells (ipRGCs) serve additional ocular functions, called non-image-forming (NIF) functions, in the regulation of circadian rhythm, melatonin secretion, sleep, mood and others...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28724876/treatment-with-continuous-positive-airway-pressure-and-diurnal-and-nocturnal-serum-melatonin-concentration-in-patients-with-obstructive-sleep-apnea
#13
Małgorzata Barnaś, Marta Maskey-Warzęchowska, Piotr Bielicki, Marta Kumor, Ryszarda Chazan
INTRODUCTION    Melatonin secretion, one of the main factors controlling the sleep-wake rhythm, may be disrupted in subjects with sleep disorders. OBJECTIVES    To evaluate the profile of circadian melatonin secretion in patients with obstructive sleep apnea (OSA) and to assess the impact of a 2 day and a 3-month period of treatment with continuous airway pressure (CPAP) on diurnal and nocturnal serum melatonin. PATIENTS AND METHODS    Serum melatonin was evaluated in 71 untreated OSA patients and 18 healthy controls at six time points: 10 am, 2 pm, 6 pm, 10 pm, 2 am, 6 am...
July 10, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28721695/myopes-have-significantly-higher-serum-melatonin-concentrations-than-non-myopes
#14
Stephanie Kearney, Lisa O'Donoghue, Kirsty L Pourshahidi, Diego Cobice, Kathryn J Saunders
PURPOSE: Experimental animal models of myopia demonstrate that higher melatonin (Mel) and lower dopamine (DA) concentrations actively promote axial elongation. This study explored the association between myopia and serum concentrations of DA and Mel in humans. METHODS: Morning serum concentrations of DA and Mel were measured by solid phase extraction-liquid chromatography-tandem mass spectrometry from 54 participants (age 19.1 ± 0.81 years) in September/October 2014 (phase 1) and March/April 2016 (phase 2)...
July 18, 2017: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/28720269/relationships-of-salivary-cortisol-and-melatonin-rhythms-to-sleep-quality-emotion-and-fatigue-levels-in-patients-with-newly-diagnosed-lung-cancer
#15
Wen-Pei Chang, Chia-Chin Lin
PURPOSE: After being diagnosed with lung cancer, patients often experience sleep disturbance, anxiety, depression, and fatigue. These symptoms may occur because of changes in neurotransmitter secretion caused by tumors. This study investigated the correlation of cortisol and melatonin rhythms with sleep quality, anxiety, depression, and fatigue levels in patients with newly diagnosed lung cancer. METHOD: We conducted a case-control study and recruited 40 patients with newly diagnosed lung cancer and 40 healthy adults...
August 2017: European Journal of Oncology Nursing: the Official Journal of European Oncology Nursing Society
https://www.readbyqxmd.com/read/28711776/sleep-wake-profiles-and-circadian-rhythms-of-core-temperature-and-melatonin-in-young-people-with-affective-disorders
#16
Joanne S Carpenter, Rébecca Robillard, Daniel F Hermens, Sharon L Naismith, Christopher Gordon, Elizabeth M Scott, Ian B Hickie
While disturbances of the sleep-wake cycle are common in people with affective disorders, the characteristics of these disturbances differ greatly between individuals. This heterogeneity is likely to reflect multiple underlying pathophysiologies, with different perturbations in circadian systems contributing to the variation in sleep-wake cycle disturbances. Such disturbances may be particularly relevant in adolescents and young adults with affective disorders as circadian rhythms undergo considerable change during this key developmental period...
July 8, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28708714/sleep-medications-containing-melatonin-can-potentially-induce-ventricular-arrhythmias-in-structurally-normal-hearts-a-two-patient-report
#17
L J de Vries, T Géczy, T Szili-Torok
Idiopathic ventricular arrhythmias (IVAs) are relatively common in the general population and usually have a good prognosis. However, frequent PVCs can lower quality of life (in symptomatic cases) and can cause cardiomyopathy and sudden cardiac death. In this report, we demonstrate a novel trigger for IVAs. Melatonin use for treating sleep-disorders has increased significantly in recent years. We provide here the first human evidence of its pro-arrhythmic effect by presenting two patients (with normal myocardium) with symptomatic PVCs, while on melatonin...
July 13, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28707143/clinical-sleep-wake-disorders-ii-focus-on-insomnia-and-circadian-rhythm-sleep-disorders
#18
Kai Spiegelhalder, Christoph Nissen, Dieter Riemann
Insomnia and circadian rhythm sleep disorders affect large proportions of the population and have pronounced effects on quality of life and daytime performance. While the neurobiology of insomnia is not yet fully understood, circadian rhythm sleep disorders are assumed to be caused by a mismatch between the individual circadian phase position and the desired sleep-wake schedule. Benzodiazepines and non-benzodiazepine positive allosteric GABAA receptor modulators improve sleep onset and maintenance in the short-term treatment of insomnia...
July 14, 2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28691893/sleep-and-mood-changes-in-advanced-age-after-blue-blocking-yellow-intra-ocular-lens-iols-implantation-during-cataract-surgical-treatment-a-randomized-controlled-trial
#19
Olivia Zambrowski, Elsa Tavernier, Eric H Souied, Thomas Desmidt, Amélie Le Gouge, David Bellicaud, Béatrice Cochener, Nadège Limousin, Caroline Hommet, Elisabeth Autret-Leca, Pierre-Jean Pisella, Vincent Camus
OBJECTIVES: Both advanced age and depression are characterized by changes in sleep patterns. Light exposure is one of the main synchronizers of circadian cycles and influences sleep by inhibiting melatonin secretion, which is mostly sensitive to light of low wavelengths (blue). Blue-blocking (yellow) intraocular lenses (IOLs) have supplanted the usual UV-blocking (clear) IOLs during cataract surgery to prevent age-related macular degeneration, however, the impact of yellow IOLs on sleep and mood is unclear...
July 10, 2017: Aging & Mental Health
https://www.readbyqxmd.com/read/28674771/a-review-of-the-physiology-of-a-survival-expert-of-big-freeze-deep-snow-and-an-empty-stomach-the-boreal-raccoon-dog-nyctereutes-procyonoides
#20
REVIEW
Anne-Mari Mustonen, Petteri Nieminen
The raccoon dog (Nyctereutes procyonoides) is an invasive canid originating from eastern Asia. Here, we review its physiological adaptations to wintering, with an emphasis on northern Europe, where the raccoon dog spends the coldest part of the year in winter sleep. The timing of physiological changes related to wintering is connected to photoperiod by melatonin. In preparation to winter, raccoon dogs display autumnal hyperphagia and fattening probably regulated by the interaction of several peptide hormones...
July 4, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
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