keyword
MENU ▼
Read by QxMD icon Read
search

Circadian disorder

keyword
https://www.readbyqxmd.com/read/29773830/circadian-and-homeostatic-modulation-of-multi-unit-activity-in-midbrain-dopaminergic-structures
#1
Karim Fifel, Johanna H Meijer, Tom Deboer
Although the link between sleep disturbances and dopamine (DA)-related neurological and neuropsychiatric disorders is well established, the impact of sleep alterations on neuronal activity of midbrain DA-ergic structures is currently unknown. Here, using wildtype C57Bl mice, we investigated the circadian- and sleep-related modulation of electrical neuronal activity in midbrain ventral-tegmental-area (VTA) and substantia nigra (SN). We found no significant circadian modulation of activity in SN while VTA displayed a low amplitude but significant circadian modulation with increased firing rates during the active phase...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29767995/structure-activity-relationships-and-therapeutic-potentials-of-5-ht7-receptor-ligands-an-update
#2
Maria N Modica, Enza Lacivita, Sebastiano Intagliata, Loredana Salerno, Giuseppe Romeo, Valeria Pittala, Marcello Leopoldo
Serotonin 5-HT7 receptor (5-HT7R) has been the subject of intense research efforts because of its presence in brain areas such as hippocampus, hypothalamus, and cortex. Preclinical data link the 5-HT7R to a variety of central nervous system processes such as regulation of circadian rhythms, mood, cognitions, pain processing, and mechanisms of addiction. 5-HT7R blockade has antidepressant effects and may ameliorate cognitive deficits associated with schizophrenia. 5-HT7R has been recently shown to modulate neuronal morphology, excitability, and plasticity, thus contributing to shape brain networks during development and to remodel neuronal wiring in the mature brain...
May 16, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29764215/myotonic-dystrophytype-1-report-of-non-24-h-sleep-wake-disorder-with-excessive-daytime-sleepiness
#3
Lucio Huebra Pimentel Filho, Ana Carolina Dias Gomes, Bruno Gonçalves, Sergio Tufik, Fernando Morgadinho Coelho
Myotonic dystrophy (MD) is a neuromuscular disease with myotonia, progressive weakness, and involvement of CNS, heart, and gastrointestinal system. Excessive daytime sleepiness (EDS) in myotonic dystrophy type 1 (MD1) is related to sleep breathing diseases, restless leg syndrome, periodic limb movements during sleep and narcoleptic-like phenotype. However, authors highlight a central dysfunction of sleep regulation. We describe a 26-year-old, female, MD1 patient with EDS. Sleep diary/actigraphy evidenced two different circadian periods with values of 1442 and 1522 min...
May 15, 2018: Chronobiology International
https://www.readbyqxmd.com/read/29759891/the-putative-role-of-oxidative-stress-and-inflammation-in-the-pathophysiology-of-sleep-dysfunction-across-neuropsychiatric-disorders-focus-on-chronic-fatigue-syndrome-bipolar-disorder-and-multiple-sclerosis
#4
REVIEW
Gerwyn Morris, Brendon Stubbs, Cristiano A Köhler, Ken Walder, Anastasiya Slyepchenko, Michael Berk, André F Carvalho
Sleep and circadian abnormalities are prevalent and burdensome manifestations of diverse neuro-immune diseases, and may aggravate the course of several neuropsychiatric disorders. The underlying pathophysiology of sleep abnormalities across neuropsychiatric disorders remains unclear, and may involve the inter-play of several clinical variables and mechanistic pathways. In this review, we propose a heuristic framework in which reciprocal interactions of immune, oxidative and nitrosative stress, and mitochondrial pathways may drive sleep abnormalities across potentially neuroprogressive disorders...
April 4, 2018: Sleep Medicine Reviews
https://www.readbyqxmd.com/read/29759273/drugs-used-in-circadian-sleep-wake-rhythm-disturbances
#5
REVIEW
Helen J Burgess, Jonathan S Emens
This article focuses on melatonin and other melatonin receptor agonists, and specifically their circadian phase shifting and sleep-enhancing properties. The circadian system and circadian rhythm sleep-wake disorders are briefly reviewed, followed by a summary of the circadian phase shifting, sleep-enhancing properties, and possible safety concerns associated with melatonin and other melatonin receptor agonists. The recommended use of melatonin, including dose and timing, in the latest American Academy of Sleep Medicine Clinical Practice Guidelines for the treatment of intrinsic circadian rhythm disorders is also reviewed...
June 2018: Sleep Medicine Clinics
https://www.readbyqxmd.com/read/29755291/transcription-factor-co-expression-networks-of-adipose-rna-seq-data-reveal-regulatory-mechanisms-of-obesity
#6
Ruta Skinkyte-Juskiene, Lisette J A Kogelman, Haja N Kadarmideen
Background: Transcription Factors (TFs) control actuation of genes in the genome and are key mediators of complex processes such as obesity. Master Regulators (MRs) are the genes at the top of a regulation hierarchy which regulate other genes. Objective: To elucidate clusters of highly co-expressed TFs (modules), involved pathways, highly inter-connected TFs (hub-TFs) and MRs leading to obesity and leanness, using porcine model for human obesity. Methods: We identified 817 expressed TFs in RNA-Sequencing dataset representing extreme degrees of obesity (DO; lean, obese)...
May 2018: Current Genomics
https://www.readbyqxmd.com/read/29753192/circadian-activity-rhythm-in-adult-attention-deficit-hyperactivity-disorder
#7
Lorenzo Tonetti, Andreas Conca, Giancarlo Giupponi, Marco Filardi, Vincenzo Natale
The aim of the present study was to analyze the features of circadian motor activity rhythm of adult attention-deficit hyperactivity disorder (ADHD) patients, by means of functional linear modeling, within the theoretical framework of the two-process model of sleep regulation. Thirty-two ADHD patients and 32 healthy controls (HCs) participated the study. Actiwatch AW64 actigraph was used to quantify motor activity data in 1-min epochs. Participants wore the actigraph on the non-dominant wrist for seven consecutive days...
May 6, 2018: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/29751019/nighttime-light-exposure-enhances-rev-erb%C3%AE-targeting-micrornas-and-contributes-to-hepatic-steatosis
#8
Patricia C Borck, Thiago M Batista, Jean F Vettorazzi, Gabriela M Soares, Camila Lubaczeuski, Dongyin Guan, Antonio C Boschero, Elaine Vieira, Mitchell A Lazar, Everardo M Carneiro
OBJECTIVE: The exposure to artificial light at night (ALAN) disrupts the biological rhythms and has been associated with the development of metabolic syndrome. MicroRNAs (miRNAs) display a critical role in fine-tuning the circadian system and energy metabolism. In this study, we aimed to assess whether altered miRNAs expression in the liver underlies metabolic disorders caused by disrupted biological rhythms. RESULTS: We found that C3H/HePas mice exposed to ALAN developed obesity, and hepatic steatosis, which was paralleled by decreased expression of Rev-erbα and up-regulation of its lipogenic targets ACL and FAS in liver...
May 8, 2018: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29749054/dehydration-responsive-nuclear-proteome-landscape-of-chickpea-cicer-arietinum-l-reveals-phosphorylation-mediated-regulation-of-stress-response
#9
Pragya Barua, Nilesh Vikram Lande, Pratigya Subba, Dipak Gayen, Sneha Pinto, T S Keshav Prasad, Subhra Chakraborty, Niranjan Chakraborty
Non-availability of water or dehydration remains recurring climatic disorder affecting yield of major food crops, legumes in particular. Nuclear proteins (NP) and phosphoproteins (NPPs) execute crucial cellular functions that form the regulatory hub for coordinated stress response. Phosphoproteins hold enormous influence over cellular signalling. Four-week-old seedlings of a grain legume, chickpea, were subjected to gradual dehydration and nuclear proteins were extracted from unstressed control as well as from 72 and 144 h stressed tissues...
May 10, 2018: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29747703/dark-matters-effects-of-light-at-night-on-metabolism
#10
Randy J Nelson, Souhad Chbeir
Life on earth has evolved during the past several billion years under relatively bright days and dark night conditions. The wide-spread adoption of electric lights during the past century exposed animals, both human and non-human, to significant light at night for the first time in their evolutionary history. Endogenous circadian clocks depend on light to entrain to the external daily environment and seasonal rhythms depend on clear nightly melatonin signals to assess time of year. Thus, light at night can derange temporal adaptations...
May 11, 2018: Proceedings of the Nutrition Society
https://www.readbyqxmd.com/read/29743086/numerical-study-of-entrainment-of-the-human-circadian-system-and-recovery-by-light-treatment
#11
Soon Ho Kim, Segun Goh, Kyungreem Han, Jong Won Kim, MooYoung Choi
BACKGROUND: While the effects of light as a zeitgeber are well known, the way the effects are modulated by features of the sleep-wake system still remains to be studied in detail. METHODS: A mathematical model for disturbance and recovery of the human circadian system is presented. The model combines a circadian oscillator and a sleep-wake switch that includes the effects of orexin. By means of simulations, we characterize the period-locking zone of the model, where a stable 24-hour circadian rhythm exists, and the occurrence of circadian disruption due to both insufficient light and imbalance in orexin...
May 9, 2018: Theoretical Biology & Medical Modelling
https://www.readbyqxmd.com/read/29740701/characteristics-and-circadian-distribution-of-cardiac-arrhythmias-in-patients-with-heart-failure-and-sleep-disordered-breathing
#12
Hazem Omran, Thomas Bitter, Dieter Horstkotte, Olaf Oldenburg, Henrik Fox
BACKGROUND: Cardiac arrhythmias and sleep-disordered breathing (SDB) are common comorbidities in heart failure with reduced ejection fraction (HFrEF). However, understanding of the association between arrhythmias and SDB is poor. This study assessed the occurrence and circadian distribution of ventricular arrhythmias in HFrEF patients with and without SDB. METHODS: This retrospective analysis included HFrEF patients admitted for unattended overnight cardiorespiratory polygraphy and 24-h Holter-ECG recording...
May 8, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29735415/interventions-targeting-glucocorticoid-kr%C3%A3-ppel-like-factor-15-branched-chain-amino-acid-signaling-improve-disease-phenotypes-in-spinal-muscular-atrophy-mice
#13
Lisa M Walter, Marc-Olivier Deguise, Katharina E Meijboom, Corinne A Betts, Nina Ahlskog, Tirsa L E van Westering, Gareth Hazell, Emily McFall, Anna Kordala, Suzan M Hammond, Frank Abendroth, Lyndsay M Murray, Hannah K Shorrock, Domenick A Prosdocimo, Saptarsi M Haldar, Mukesh K Jain, Thomas H Gillingwater, Peter Claus, Rashmi Kothary, Matthew J A Wood, Melissa Bowerman
The circadian glucocorticoid-Krüppel-like factor 15-branched-chain amino acid (GC-KLF15-BCAA) signaling pathway is a key regulatory axis in muscle, whose imbalance has wide-reaching effects on metabolic homeostasis. Spinal muscular atrophy (SMA) is a neuromuscular disorder also characterized by intrinsic muscle pathologies, metabolic abnormalities and disrupted sleep patterns, which can influence or be influenced by circadian regulatory networks that control behavioral and metabolic rhythms. We therefore set out to investigate the contribution of the GC-KLF15-BCAA pathway in SMA pathophysiology of Taiwanese Smn-/- ;SMN2 and Smn2B/- mouse models...
May 4, 2018: EBioMedicine
https://www.readbyqxmd.com/read/29731875/circadian-locomotor-output-cycles-kaput-affects-the-proliferation-and-migration-of-breast-cancer-cells-by-regulating-the-expression-of-e-cadherin-via-iq-motif-containing-gtpase-activating-protein-1
#14
Xiaoxue Li, Siyang Wang, Shuhong Yang, Junjie Ying, Hang Yu, Chunlei Yang, Yanyou Liu, Yuhui Wang, Shuting Cheng, Jing Xiao, Huiling Guo, Zhou Jiang, Zhengrong Wang
The circadian rhythm regulates numerous physiological activities, including sleep and wakefulness, behavior, immunity and metabolism. Previous studies have demonstrated that circadian rhythm disorder is associated with the occurrence of tumors. Responsible for regulating a number of functions, the Circadian locomotor output cycles kaput ( Clock ) gene is one of the core regulatory genes of circadian rhythm. The Clock gene has also been implicated in the occurrence and development of tumors in previously studies...
May 2018: Oncology Letters
https://www.readbyqxmd.com/read/29730779/the-role-of-circadian-rhythms-in-the-hypertension-of-diabetes-mellitus-and-the-metabolic-syndrome
#15
REVIEW
Björn Lemmer, Henrik Oster
PURPOSE OF THE REVIEW: Cellular circadian clocks regulate physiological functions during day and night. It has been convincingly demonstrated that hypertension in patients suffering from diabetes mellitus or metabolic syndrome is characterized in most cases by a disturbed 24-h profile resulting in a nondipper pattern. We consider possible correlation between biological clocks and symptoms of the metabolic syndrome. RECENT FINDINGS: Changes in circadian clock function have been linked to metabolic disorders in genome-wide association studies...
May 5, 2018: Current Hypertension Reports
https://www.readbyqxmd.com/read/29729230/role-of-hypothalamus-in-aging-and-its-underlying-cellular-mechanisms
#16
REVIEW
Keetae Kim, Han Kyoung Choe
Aging is characterized by a progressive loss of several physiological functions that can cause various age-related disorders. Several factors have been identified as causes of aging to elucidate the decline in functions. Various aspects of physiological deterioration are controlled by the hypothalamus, a critical brain region that connects the neuroendocrine system to physiological functions. In addition, functional alterations in a set of agouti-related peptide/neuropeptide Y (AgRP/NPY) and pro-opiomelanocortin (POMC) neurons, a set of growth hormone-releasing hormone (GHRH) and somatostatin (SST) neurons, a set of arginine vasopressin (AVP) and vasoactive intestinal peptide (VIP) neurons, and a set of gonadotropin-releasing hormone (GnRH) and kisspeptin/neurokinin B/dynorphin (KNDy) neurons contribute to age-related physiological decline in energy metabolism, hormone regulation, circadian rhythm, and reproduction, respectively...
May 2, 2018: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/29720812/cluster-headache-epidemiology-pathophysiology-clinical-features-and-diagnosis
#17
REVIEW
Diana Yi-Ting Wei, Jonathan Jia Yuan Ong, Peter James Goadsby
Cluster headache is a primary headache disorder affecting up to 0.1% of the population. Patients suffer from cluster headache attacks lasting from 15 to 180 min up to 8 times a day. The attacks are characterized by the severe unilateral pain mainly in the first division of the trigeminal nerve, with associated prominent unilateral cranial autonomic symptoms and a sense of agitation and restlessness during the attacks. The male-to-female ratio is approximately 2.5:1. Experimental, clinical, and neuroimaging studies have advanced our understanding of the pathogenesis of cluster headache...
April 2018: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/29718372/defining-the-impact-of-melanopsin-missense-polymorphisms-using-in-vivo-functional-rescue
#18
Jessica Rodgers, Steven Hughes, Carina A Pothecary, Laurence A Brown, Doron G Hickey, Stuart N Peirson, Mark W Hankins
Melanopsin (OPN4) is an opsin photopigment expressed within intrinsically photosensitive retinal ganglion cells (ipRGCs) that mediate non-image forming (NIF) responses to light. Two single nucleotide polymorphisms (SNPs) in human melanopsin (hOPN4), Pro10Leu and Thr394Ile, have recently been associated with abnormal NIF responses to light, including Seasonal Affective Disorder. It has been suggested these behavioural changes are due to altered melanopsin signalling. However, there is currently no direct evidence to support this...
April 30, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29710834/fish-oil-ameliorates-high-fat-diet-induced-male-mouse-reproductive-dysfunction-via-modifying-the-rhythmic-expression-of-testosterone-synthesis-related-genes
#19
Hualin Wang, Yazheng Cai, Yang Shao, Xifeng Zhang, Na Li, Hongyu Zhang, Zhiguo Liu
The present study aims to investigate the protective effects of ω-3 polyunsaturated fatty acids (ω-3PUFAs) against high-fat diet induced male mouse reproductive dysfunction and to explore circadian regulation mechanisms. Male C57BL/6 mice were randomly divided into three groups and fed a normal chow diet (control group, CON), a high-fat diet (HFD group) or a HFD supplemented with fish oil (FO group) for 12 weeks. After 12 weeks of feeding, the body weight and the ratio of perinephric and epididymal fat weight to body weight were significantly higher in the HFD group compared with the CON group...
April 29, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29710120/a-histologic-study-of-the-circadian-system-in-parkinson-disease-multiple-system-atrophy-and-progressive-supranuclear-palsy
#20
Eduardo De Pablo-Fernández, Robert Courtney, Thomas T Warner, Janice L Holton
Importance: Circadian dysfunction may be associated with the symptoms and neurodegeneration in Parkinson disease (PD), multiple system atrophy (MSA), and progressive supranuclear palsy (PSP), although the underlying neuroanatomical site of disruption and pathophysiological mechanisms are not fully understood. Objective: To perform a neuropathological analysis of disease-specific inclusions in the key structures of the circadian system in patients with PD, MSA, and PSP...
April 30, 2018: JAMA Neurology
keyword
keyword
25546
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"