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https://www.readbyqxmd.com/read/28533747/selective-inhibition-of-orexin-2-receptors-prevents-stress-induced-acth-release-in-mice
#1
Sujin Yun, Michelle Wennerholm, Jonathan E Shelton, Pascal Bonaventure, Michael A Letavic, Brock T Shireman, Timothy W Lovenberg, Christine Dugovic
Orexins peptides exert a prominent role in arousal-related processes including stress responding, by activating orexin-1 (OX1R) and orexin-2 (OX2R) receptors located widely throughout the brain. Stress or orexin administration stimulates hyperarousal, adrenocorticotropic hormone (ACTH) and corticosterone release, and selective OX1R blockade can attenuate several stress-induced behavioral and cardiovascular responses but not the hypothalamic-pituitary-adrenal (HPA) axis activation. As opposed to OX1R, OX2R are preferentially expressed in the paraventricular hypothalamic nucleus which is involved in the HPA axis regulation...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28530119/update-in-sleep-disordered-breathing-2016
#2
Najib T Ayas, Luciano F Drager, Mary J Morrell, Vsevolod Y Polotsky
The field of sleep disordered breathing has continued to evolve with many important articles published in the last year. In this review, we have summarized some of the key articles relevant to sleep disordered breathing that have been published in the Journal and selected articles published elsewhere in the last year; these have included landmark randomized trials concerning sleep apnea treatment in the prevention of adverse cardiac outcomes, basic science and animal studies, genetic studies, and analyses of epidemiologic cohorts...
May 21, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28526655/digital-morphometrics-a-new-upper-airway-phenotyping-paradigm-in-obstructive-sleep-apnea
#3
Richard J Schwab, Sarah E Leinwand, Cary B Bearn, Greg Maislin, Ramya Bhat Rao, Adithya Nagaraja, Stephen Wang, Brendan T Keenan
BACKGROUND: Obstructive sleep apnea (OSA) is associated with changes in pharyngeal anatomy. The goal of this study was to objectively and reproducibly quantify pharyngeal anatomy using digital morphometrics based on a laser ruler, and to assess differences between apneics and controls and associations with AHI (apnea-hypopnea index). This is the first study to use digital morphometrics to quantify intraoral risk factors for OSA. METHODS: Digital photographs were obtained using an intraoral laser ruler and digital camera in 311 controls (mean AHI=4...
May 16, 2017: Chest
https://www.readbyqxmd.com/read/28526554/the-roles-of-orexins-in-sleep-wake-regulation
#4
REVIEW
Michihiro Mieda
Orexin A and orexin B are hypothalamic neuropeptides initially identified as endogenous ligands for two orphan G-protein coupled receptors (GPCRs). A deficiency of orexin signaling results in the sleep disorder narcolepsy-cataplexy in humans, dogs, and rodents, a sleep disorder characterized by excessive daytime sleepiness and cataplexy. Multiple approaches, including molecular genetic, electrophysiological, pharmacological, and neuroanatomical studies have suggested that orexins play critical roles in the maintenance of wakefulness by regulating the function of monoaminergic and cholinergic neurons that are implicated in the regulation of wakefulness...
May 16, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28514446/identification-of-preoptic-sleep-neurons-using-retrograde-labelling-and-gene-profiling
#5
Shinjae Chung, Franz Weber, Peng Zhong, Chan Lek Tan, Thuc Nghi Nguyen, Kevin T Beier, Nikolai Hörmann, Wei-Cheng Chang, Zhe Zhang, Johnny Phong Do, Shenqin Yao, Michael J Krashes, Bosiljka Tasic, Ali Cetin, Hongkui Zeng, Zachary A Knight, Liqun Luo, Yang Dan
In humans and other mammalian species, lesions in the preoptic area of the hypothalamus cause profound sleep impairment, indicating a crucial role of the preoptic area in sleep generation. However, the underlying circuit mechanism remains poorly understood. Electrophysiological recordings and c-Fos immunohistochemistry have shown the existence of sleep-active neurons in the preoptic area, especially in the ventrolateral preoptic area and median preoptic nucleus. Pharmacogenetic activation of c-Fos-labelled sleep-active neurons has been shown to induce sleep...
May 17, 2017: Nature
https://www.readbyqxmd.com/read/28511734/sleeping-with-one-eye-open-loneliness-and-sleep-quality-in-young-adults
#6
T Matthews, A Danese, A M Gregory, A Caspi, T E Moffitt, L Arseneault
BACKGROUND: Feelings of loneliness are common among young adults, and are hypothesized to impair the quality of sleep. In the present study, we tested associations between loneliness and sleep quality in a nationally representative sample of young adults. Further, based on the hypothesis that sleep problems in lonely individuals are driven by increased vigilance for threat, we tested whether past exposure to violence exacerbated this association. METHOD: Data were drawn from the Environmental Risk (E-Risk) Longitudinal Twin Study, a birth cohort of 2232 twins born in England and Wales in 1994 and 1995...
May 17, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28507260/reprogramming-cells-from-gulf-war-veterans-into-neurons-to-study-gulf-war-illness
#7
Liang Qiang, Anand N Rao, Gustavo Mostoslavsky, Marianne F James, Nicole Comfort, Kimberly Sullivan, Peter W Baas
Gulf War illness (GWI), which afflicts at least 25% of veterans who served in the 1990-1991 war in the Persian Gulf, is thought to be caused by deployment exposures to various neurotoxicants, including pesticides, anti-nerve gas pills, and low-level nerve agents including sarin/cyclosarin. GWI is a multisymptom disorder characterized by fatigue, joint pain, cognitive problems, and gastrointestinal complaints. The most prominent symptoms of GWI (memory problems, poor attention/concentration, chronic headaches, mood alterations, and impaired sleep) suggest that the disease primarily affects the CNS...
May 16, 2017: Neurology
https://www.readbyqxmd.com/read/28507129/nonpeptide-orexin-type-2-receptor-agonist-ameliorates-narcolepsy-cataplexy-symptoms-in-mouse-models
#8
Yoko Irukayama-Tomobe, Yasuhiro Ogawa, Hiromu Tominaga, Yukiko Ishikawa, Naoto Hosokawa, Shinobu Ambai, Yuki Kawabe, Shuntaro Uchida, Ryo Nakajima, Tsuyoshi Saitoh, Takeshi Kanda, Kaspar Vogt, Takeshi Sakurai, Hiroshi Nagase, Masashi Yanagisawa
Narcolepsy-cataplexy is a debilitating disorder of sleep/wakefulness caused by a loss of orexin-producing neurons in the lateroposterior hypothalamus. Genetic or pharmacologic orexin replacement ameliorates symptoms in mouse models of narcolepsy-cataplexy. We have recently discovered a potent, nonpeptide OX2R-selective agonist, YNT-185. This study validates the pharmacological activity of this compound in OX2R-transfected cells and in OX2R-expressing neurons in brain slice preparations. Intraperitoneal, and intracerebroventricular, administration of YNT-185 suppressed cataplexy-like episodes in orexin knockout and orexin neuron-ablated mice, but not in orexin receptor-deficient mice...
May 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28501473/electrical-status-epilepticus-during-sleep-in-mowat-wilson-syndrome
#9
Paolo Bonanni, Susanna Negrin, Anna Volzone, Nicoletta Zanotta, Roberta Epifanio, Claudio Zucca, Elisa Osanni, Elisa Petacchi, Franco Fabbro
AIM: Mowat-Wilson Syndrome (MWS) is a genetic rare disease. Epilepsy is present in 70-75% of Patients and an age-dependent electroclinical pattern has been described. Up to date, there are studies with overnight sleep EEGs, probably because of the severe intellectual disability (ID) and hyperactivity of these Patients. Our purpose was to verify the hypothesis that MWS Patients might have electrical status epilepticus in slow wave sleep (ESES pattern). METHODS: A retrospective analysis of anamnestic and electrographic data was performed on 7 consecutive MWS Patients followed between 2007 and 2016...
May 10, 2017: Brain & Development
https://www.readbyqxmd.com/read/28500672/telomere-length-and-fetal-programming-a-review-of-recent-scientific-advances
#10
Valerie E Whiteman, Anjali Goswami, Hamisu M Salihu
We sought to synthesize a comprehensive literature review comprising recent research linking fetal programming to fetal telomere length. We also explored the potential effects fetal telomere length shortening has on fetal phenotypes. Utilizing the PubMed database as our primary search engine, we retrieved and reviewed 165 articles of published research. The inclusion criteria limited the articles to those that appeared within the last ten years, were pertinent to humans, and without restriction to language of publication...
May 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28489334/diagnosis-of-copan-by-whole-exome-sequencing-waking-up-a-sleeping-tiger-s-eye
#11
Christina Evers, Angelika Seitz, Birgit Assmann, Thomas Opladen, Stephanie Karch, Katrin Hinderhofer, Martin Granzow, Nagarajan Paramasivam, Roland Eils, Nicolle Diessl, Claus R Bartram, Ute Moog
Neurodegeneration with brain iron accumulation (NBIA) is a group of neurodegenerative disorders characterized by iron accumulation in the basal ganglia. Recently, mutations in CoA synthase (COASY) have been identified as a cause of a novel NBIA subtype (COASY Protein-Associated Neurodegeneration, CoPAN) in two patients with dystonic paraparesis, parkinsonian features, cognitive impairment, behavior abnormalities, and axonal neuropathy. COASY encodes an enzyme required for Coenzyme A (CoA) biosynthesis. Using whole exome sequencing (WES) we identified compound heterozygous COASY mutations in two siblings with intellectual disability, ataxic gait, progressive spasticity, and obsessive-compulsive behavior...
May 10, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28485235/understanding-the-physiology-of-sleep-and-promoting-effective-routines-with-infants-in-hospital-and-at-home
#12
Doreen Crawford
Sleep is a biological necessity. Infants are unique individuals and what can be regarded as normal for one infant and his or her family may be considered a problem for another. Genetics, lifestyles, roles and responsibilities all influence sleep. This article explores the physiology of infant sleep and reviews how sleep is influenced by culture, events such as a hospital admission and parenting styles. It considers how the children's nurse can help and support a family who may feel that they have infant sleep-related issues...
May 9, 2017: Nursing Children and Young People
https://www.readbyqxmd.com/read/28484371/state-dependent-modulation-of-slow-wave-motifs-towards-awakening
#13
Daisuke Shimaoka, Chenchen Song, Thomas Knöpfel
Slow cortical waves that propagate across the cerebral cortex forming large-scale spatiotemporal propagation patterns are a hallmark of non-REM sleep and anesthesia, but also occur during resting wakefulness. To investigate how the spatial temporal properties of slow waves change with the depth of anesthetic, we optically imaged population voltage transients generated by mouse layer 2/3 pyramidal neurons across one or two cortical hemispheres dorsally with a genetically encoded voltage indicator (GEVI). From deep barbiturate anesthesia to light barbiturate sedation, depolarizing wave events recruiting at least 50% of the imaged cortical area consistently appeared as a conserved repertoire of distinct wave motifs...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28471701/the-brain-derived-neurotrophic-factor-val66met-polymorphism-delivery-method-birth-weight-and-night-sleep-duration-as-determinants-of-obesity-in-vietnamese-children-of-primary-school-age
#14
Le Thi Tuyet, Bui Thi Nhung, Duong Thi Anh Dao, Nguyen Thi Hong Hanh, Le Danh Tuyen, Tran Quang Binh, Vu Thi Minh Thuc
BACKGROUND: Obesity is a complex disease that involves both environmental and genetic factors in its pathogenesis. Several studies have identified multiple obesity-associated loci in many populations. However, their contribution to obesity in the Vietnamese population is not fully described, especially in children. The study aimed to investigate the association of obesity with Val66Met polymorphism in brain-derived neurotrophic factor (BDNF) gene, delivery method, birth weight, and lifestyle factors in Vietnamese primary school children...
May 4, 2017: Childhood Obesity
https://www.readbyqxmd.com/read/28470102/oct1-genetic-variants-are-associated-with-postoperative-morphine-related-adverse-effects-in-children
#15
Rajiv Balyan, Xue Zhang, Vidya Chidambaran, Lisa J Martin, Tomoyuki Mizuno, Tsuyoshi Fukuda, Alexander A Vinks, Senthilkumar Sadhasivam
AIM: Large interindividual variability in morphine pharmacokinetics (PK) could contribute to variability in morphine analgesia and adverse events. Respiratory depression (RD) and postoperative nausea and vomiting (PONV) are significant adverse drug response of intravenous morphine in the perioperative setting limiting its efficacy in achieving adequate surgical pain relief. OCT1 is a transporter in the liver that transports morphine from the bloodstream into hepatocytes. Earlier we reported association of genetic polymorphisms in OCT1 with morphine PK, and lower morphine clearance in Caucasian children as compared with African-American (AA) children...
May 4, 2017: Pharmacogenomics
https://www.readbyqxmd.com/read/28466652/a-genetic-clock-variant-associated-with-cluster-headache-causing-increased-mrna-levels
#16
Carmen Fourier, Caroline Ran, Margret Zinnegger, Anne-Sofie Johansson, Christina Sjöstrand, Elisabet Waldenlind, Anna Steinberg, Andrea Carmine Belin
Background Cluster headache is characterized by recurrent unilateral headache attacks of severe intensity. One of the main features in a majority of patients is a striking rhythmicity of attacks. The CLOCK ( Circadian Locomotor Output Cycles Kaput) gene encodes a transcription factor that serves as a basic driving force for circadian rhythm in humans and is therefore particularly interesting as a candidate gene for cluster headache. Methods We performed an association study on a large Swedish cluster headache case-control sample (449 patients and 677 controls) screening for three single nucleotide polymorphisms (SNPs) in the CLOCK gene implicated in diurnal preference (rs1801260) or sleep duration (rs11932595 and rs12649507), respectively...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28466612/exploring-the-association-between-legg-calv%C3%A3-perthes-disease-and-attention-deficit-hyperactivity-disorder-in-children
#17
Julia Berman, Adi Aran, Tamar Berenstein-Weyel, Ehud Lebel
BACKGROUND: Legg-Calvé-Perthes disease (LCPD) is an idiopathic hip osteonecrosis prevalent in children < age 15 years. The etiology remains incompletely understood, partly because of multiple potential environmental risk factors and partly because of lack of genetic markers. It has been hypothesized that hyperactivity may induce mechanical stress and/or vascular damage at a fragile joint. OBJECTIVES: To assess children with LCPD for markers of attention deficit hyperactivity disorder (ADHD) relative to their unaffected comparably aged siblings to exclude the contribution of hyperactive behavior versus environmental and/or genetic factors in LCPD...
November 2016: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28465860/lrrk2-g2019s-mutation-prevalence-and-clinical-features-in-moroccans-with-parkinson-s-disease
#18
Ahmed Bouhouche, Houyam Tibar, Rafiqua Ben El Haj, Khalil El Bayad, Rachid Razine, Sanaa Tazrout, Asmae Skalli, Naima Bouslam, Loubna Elouardi, Ali Benomar, Mohammed Yahyaoui, Wafa Regragui
Background. The LRRK2 G2019S mutation is the most common genetic determinant of Parkinson's disease (PD) identified to date. This mutation, reported in both familial and sporadic PD, occurs at elevated frequencies in Maghreb population. In the present study, we examined the prevalence of the G2019S mutation in the Moroccan population and we compared the motor and nonmotor phenotype of G2019S carriers to patients with idiopathic Parkinson's disease. Methods. 100 PD patients were assessed for motor and nonmotor symptoms, current medication, and motor complication including motor fluctuations and dyskinesia...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28463859/adiponectin-lipids-and-atherosclerosis
#19
Niki Katsiki, Christos Mantzoros, Dimitri P Mikhailidis
PURPOSE OF REVIEW: Adiponectin is an adipokine with anti-inflammatory, antioxidant, antiatherogenic, pro-angiogenic, vasoprotective and insulin-sensitizing properties. Several factors may influence adiponectin levels, such as genetic polymorphisms, obesity / body fat distribution, diet and exercise as well as cardiovascular risk factors such as sleep deprivation and smoking as well as medications. Adiponectin has been proposed as a potential prognostic biomarker and a therapeutic target in patients with cardiometabolic diseases...
April 29, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28460831/association-of-japanese-cedar-pollinosis-and-sensitization-with-hla-dpb1-in-the-japanese-adolescent
#20
Wataru Morii, Aiko Sakai, Takahiro Ninomiya, Masanori Kidoguchi, Ryo Sumazaki, Shigeharu Fujieda, Emiko Noguchi
BACKGROUND: Allergic rhinitis (AR) is a heterogeneous disorder that significantly affects daily activity, work productivity, sleep, learning, and quality of life in all generations. Japanese cedar (JC) pollen is the most common allergen responsible for the development of AR in Japan. AR caused by JC pollen is considered to be a multifactorial inheritance disease that is caused by both environmental and genetic factors. The aim of this study was to investigate whether Human Leukocyte Antigen-DPB1 (HLA-DPB1) is associated with JC sensitization/pollinosis...
April 28, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
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