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https://www.readbyqxmd.com/read/28424564/new-developments-in-the-management-of-narcolepsy
#1
REVIEW
Vivien C Abad, Christian Guilleminault
Narcolepsy is a life-long, underrecognized sleep disorder that affects 0.02%-0.18% of the US and Western European populations. Genetic predisposition is suspected because of narcolepsy's strong association with HLA DQB1*06-02, and genome-wide association studies have identified polymorphisms in T-cell receptor loci. Narcolepsy pathophysiology is linked to loss of signaling by hypocretin-producing neurons; an autoimmune etiology possibly triggered by some environmental agent may precipitate hypocretin neuronal loss...
2017: Nature and Science of Sleep
https://www.readbyqxmd.com/read/28306346/risk-factors-for-central-serous-chorioretinopathy-multivariate-approach-in-a-case-control-study
#2
Irini Chatziralli, Stamatina A Kabanarou, Efstratios Parikakis, Alexandros Chatzirallis, Tina Xirou, Panagiotis Mitropoulos
PURPOSE: The purpose of this prospective study was to investigate the potential risk factors associated independently with central serous retinopathy (CSR) in a Greek population, using multivariate approach. MATERIALS AND METHODS: Participants in the study were 183 consecutive patients diagnosed with CSR and 183 controls, matched for age. All participants underwent complete ophthalmological examination and information regarding their sociodemographic, clinical, medical and ophthalmological history were recorded, so as to assess potential risk factors for CSR...
March 17, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28268468/detection-of-myasthenia-gravis-using-electrooculography-signals
#3
T Liang, M I Boulos, B J Murray, S Krishnan, H Katzberg, K Umapathy
Myasthenia gravis (MG) is an autoimmune neuromuscular disorder resulting from skeletal muscle weakness and fatigue. An early common symptom is fatigable weakness of the extrinsic ocular muscles; if symptoms remain confined to the ocular muscles after a few years, this is classified as ocular myasthenia gravis (OMG). Diagnosis of MG when there are mild, isolated ocular symptoms can be difficult, and currently available diagnostic techniques are insensitive, non-specific or technically cumbersome. In addition, there are no accurate biomarkers to follow severity of ocular dysfunction in MG over time...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28244020/air-travel-circadian-rhythms-hormones-and-autoimmunity
#4
REVIEW
J Torres-Ruiz, A Sulli, M Cutolo, Y Shoenfeld
Biological rhythms are fundamental for homeostasis and have recently been involved in the regulatory processes of various organs and systems. Circadian cycle proteins and hormones have a direct effect on the inflammatory response and have shown pro- or anti-inflammatory effects in animal models of autoimmune diseases. The cells of the immune system have their own circadian rhythm, and the light-dark cycle directly influences the inflammatory response. On the other hand, patients with autoimmune diseases characteristically have sleep disorders and fatigue, and in certain disease, such as rheumatoid arthritis (RA), a frank periodicity in the signs and symptoms is recognized...
February 27, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28226641/detection-of-myasthenia-gravis-using-electrooculography-signals
#5
T Liang, M I Boulos, B J Murray, S Krishnan, H Katzberg, K Umapathy, T Liang, M I Boulos, B J Murray, S Krishnan, H Katzberg, K Umapathy, M I Boulos, K Umapathy, H Katzberg, S Krishnan, T Liang, B J Murray
Myasthenia gravis (MG) is an autoimmune neuromuscular disorder resulting from skeletal muscle weakness and fatigue. An early common symptom is fatigable weakness of the extrinsic ocular muscles; if symptoms remain confined to the ocular muscles after a few years, this is classified as ocular myasthenia gravis (OMG). Diagnosis of MG when there are mild, isolated ocular symptoms can be difficult, and currently available diagnostic techniques are insensitive, non-specific or technically cumbersome. In addition, there are no accurate biomarkers to follow severity of ocular dysfunction in MG over time...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28179647/narcolepsy
#6
REVIEW
Birgitte R Kornum, Stine Knudsen, Hanna M Ollila, Fabio Pizza, Poul J Jennum, Yves Dauvilliers, Sebastiaan Overeem
Narcolepsy is a chronic sleep disorder that has a typical onset in adolescence and is characterized by excessive daytime sleepiness, which can have severe consequences for the patient. Problems faced by patients with narcolepsy include social stigma associated with this disease, difficulties in obtaining an education and keeping a job, a reduced quality of life and socioeconomic consequences. Two subtypes of narcolepsy have been described (narcolepsy type 1 and narcolepsy type 2), both of which have similar clinical profiles, except for the presence of cataplexy, which occurs only in patients with narcolepsy type 1...
February 9, 2017: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/28164150/vigilance-at-home-longitudinal-analyses-of-neighborhood-safety-perceptions-and-health
#7
Jennifer W Robinette, Susan T Charles, Tara L Gruenewald
Feeling unsafe in one's neighborhood is associated with poor health. This relation may be conferred through multiple pathways, including greater psychological distress and health behaviors that are associated with poorer health and perceptions of neighborhood safety. Women and older adults often report feeling less safe in their environments despite having a lower risk of victimization than men and younger adults, and it is unclear whether these differences influence the health-perception relationship. We used the Midlife in the United States study to test whether baseline neighborhood safety perceptions would be associated with chronic health conditions 10 years later, and whether this relation differs by gender, age, and individual and neighborhood SES...
December 2016: SSM—Population Health
https://www.readbyqxmd.com/read/28107375/narcolepsy-type-1-is-associated-with-a-systemic-increase-and-activation-of-regulatory-t-cells-and-with-a-systemic-activation-of-global-t-cells
#8
Michel Lecendreux, Guillaume Churlaud, Fabien Pitoiset, Armelle Regnault, Tu Anh Tran, Roland Liblau, David Klatzmann, Michelle Rosenzwajg
Narcolepsy is a rare neurologic disorder characterized by excessive daytime sleepiness, cataplexy and disturbed nocturnal sleep patterns. Narcolepsy type 1 (NT1) has been shown to result from a selective loss of hypothalamic hypocretin-secreting neurons with patients typically showing low CSF-hypocretin levels (<110 pg/ml). This specific loss of hypocretin and the strong association with the HLA-DQB1*06:02 allele led to the hypothesis that NT1 could be an immune-mediated pathology. Moreover, susceptibility to NT1 has recently been associated with several pathogens, particularly with influenza A H1N1 virus either through infection or vaccination...
2017: PloS One
https://www.readbyqxmd.com/read/27922195/the-neuropeptide-cortistatin-attenuates-experimental-autoimmune-myocarditis-via-inhibition-of-cardiomyogenic-t-cell-driven-inflammatory-responses
#9
Virginia Delgado-Maroto, Clara P Falo, Irene Forte-Lago, Norma Adan, Maria Morell, Elena Maganto-Garcia, Gema Robledo, Francisco O'Valle, Andrew H Lichtman, Elena Gonzalez-Rey, Mario Delgado
BACKGROUND AND PURPOSE: Myocarditis is an inflammatory and autoimmune cardiovascular disease that causes dilated myocardiopathy and is responsible for high morbidity and mortality worldwide. Cortistatin is a neuropeptide produced by neurons and cells of the immune and vascular systems. Besides its action in locomotor activity and sleep, cortistatin inhibits inflammation in different experimental models of autoimmune diseases. However, its role in inflammatory cardiovascular disorders is unexplored...
February 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/27864522/comorbidity-between-central-disorders-of-hypersomnolence-and-immune-based-disorders
#10
Lucie Barateau, Régis Lopez, Isabelle Arnulf, Michel Lecendreux, Patricia Franco, Xavier Drouot, Smaranda Leu-Semenescu, Isabelle Jaussent, Yves Dauvilliers
OBJECTIVE: To assess and compare the frequencies of personal and family history of autoimmune diseases (AID), autoinflammatory disorders (ID), and allergies in a population of patients, adults and children, with narcolepsy type 1 (NT1), narcolepsy type 2 (NT2), and idiopathic hypersomnia (IH), 3 central hypersomnia disorders, and healthy controls. METHODS: Personal and family history of AID, ID, and allergies were assessed by questionnaire and medical interview in a large cohort of 450 consecutive adult patients (206 NT1, 106 NT2, 138 IH) and 95 pediatric patients (80 NT1) diagnosed according to the third International Classification of Sleep Disorders criteria in national reference centers for narcolepsy in France and 751 controls (700 adults, 51 children) from the general population...
January 3, 2017: Neurology
https://www.readbyqxmd.com/read/27855167/assessment-of-olfactory-function-in-mapt-associated-neurodegenerative-disease-reveals-odor-identification-irreproducibility-as-a-non-disease-specific-general-characteristic-of-olfactory-dysfunction
#11
Katerina Markopoulou, Bruce A Chase, Piotr Robowski, Audrey Strongosky, Ewa Narożańska, Emilia J Sitek, Mariusz Berdynski, Maria Barcikowska, Matt C Baker, Rosa Rademakers, Jarosław Sławek, Christine Klein, Katja Hückelheim, Meike Kasten, Zbigniew K Wszolek
Olfactory dysfunction is associated with normal aging, multiple neurodegenerative disorders, including Parkinson's disease, Lewy body disease and Alzheimer's disease, and other diseases such as diabetes, sleep apnea and the autoimmune disease myasthenia gravis. The wide spectrum of neurodegenerative disorders associated with olfactory dysfunction suggests different, potentially overlapping, underlying pathophysiologies. Studying olfactory dysfunction in presymptomatic carriers of mutations known to cause familial parkinsonism provides unique opportunities to understand the role of genetic factors, delineate the salient characteristics of the onset of olfactory dysfunction, and understand when it starts relative to motor and cognitive symptoms...
2016: PloS One
https://www.readbyqxmd.com/read/27821550/high-dimensional-single-cell-analysis-reveals-the-immune-signature-of-narcolepsy
#12
Felix J Hartmann, Raphaël Bernard-Valnet, Clémence Quériault, Dunja Mrdjen, Lukas M Weber, Edoardo Galli, Carsten Krieg, Mark D Robinson, Xuan-Hung Nguyen, Yves Dauvilliers, Roland S Liblau, Burkhard Becher
Narcolepsy type 1 is a devastating neurological sleep disorder resulting from the destruction of orexin-producing neurons in the central nervous system (CNS). Despite its striking association with the HLA-DQB1*06:02 allele, the autoimmune etiology of narcolepsy has remained largely hypothetical. Here, we compared peripheral mononucleated cells from narcolepsy patients with HLA-DQB1*06:02-matched healthy controls using high-dimensional mass cytometry in combination with algorithm-guided data analysis. Narcolepsy patients displayed multifaceted immune activation in CD4(+) and CD8(+) T cells dominated by elevated levels of B cell-supporting cytokines...
November 14, 2016: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27643908/autoantibody-associated-central-nervous-system-neurologic-disorders
#13
Jenny Linnoila, Sean J Pittock
Autoimmune neurology is a rapidly evolving new subspecialty driven by the discovery of novel neural- (neuronal- or glial-) specific autoantibodies and their target antigens. The neurologic manifestations affecting the central nervous system include encephalitis, dementia, epilepsy, and movement and sleep disorders. Laboratory testing is now available for most of these neural-specific autoantibodies, which serve as diagnostic markers, in some instances directing the physician toward specific cancer types (e...
August 2016: Seminars in Neurology
https://www.readbyqxmd.com/read/27621438/cd8-t-cell-mediated-killing-of-orexinergic-neurons-induces-a-narcolepsy-like-phenotype-in-mice
#14
Raphaël Bernard-Valnet, Lidia Yshii, Clémence Quériault, Xuan-Hung Nguyen, Sébastien Arthaud, Magda Rodrigues, Astrid Canivet, Anne-Laure Morel, Arthur Matthys, Jan Bauer, Béatrice Pignolet, Yves Dauvilliers, Christelle Peyron, Roland S Liblau
Narcolepsy with cataplexy is a rare and severe sleep disorder caused by the destruction of orexinergic neurons in the lateral hypothalamus. The genetic and environmental factors associated with narcolepsy, together with serologic data, collectively point to an autoimmune origin. The current animal models of narcolepsy, based on either disruption of the orexinergic neurotransmission or neurons, do not allow study of the potential autoimmune etiology. Here, we sought to generate a mouse model that allows deciphering of the immune mechanisms leading to orexin(+) neuron loss and narcolepsy development...
September 27, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27564078/transient-impact-of-rituximab-in-h1n1-vaccination-associated-narcolepsy-with-severe-psychiatric-symptoms
#15
Tomi Sarkanen, Reija Alén, Markku Partinen
INTRODUCTION: Narcolepsy type 1 is an organic sleep disorder caused by the destruction of hypocretin producing neurons in hypothalamus. In addition to daytime sleepiness, the spectrum and severity of symptoms are very variable. Psychiatric comorbidity and phenomena resembling psychotic symptoms are also common. Current treatment options for narcolepsy are symptomatic but there are few case reports of positive effect of immunotherapy. We report a very severely affected young boy treated with rituximab (RXB)...
September 2016: Neurologist
https://www.readbyqxmd.com/read/27549768/management-of-narcolepsy
#16
REVIEW
Lucie Barateau, Régis Lopez, Yves Dauvilliers
Narcolepsy type 1 (NT1) and type 2 (NT2) are two rare neurological diseases, classified as central disorders of hypersomnolence. The pathophysiology of NT1 is well known; it is caused by the selective destruction of hypocretin (Hcrt) neurons, by a highly suspected autoimmune process. On the contrary, little is known about NT2 etiology, sharing with NT1 somnolence and signs of dysregulation of rapid eye movement (REM) sleep, but not cataplexy. Management strategies are rather codified, at least in adults, with a lifelong treatment required in NT1, whereas no pharmacological study focused only on NT2 patients, with sometimes spontaneous improvement or disappearance of their symptoms...
October 2016: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/27538328/-narcolepsy-with-cataplexy-type-1-narcolepsy
#17
Yves Dauvilliers, Régis Lopez
Narcolepsy with cataplexy or narcolepsy type 1 in a rare, disabling sleep disorder, with a prevalence of 20 to 30 per 100,000. Its onset peaks in the second decade. The main features are excessive daytime sleepiness and cataplexy or sudden less of muscle tone triggered by emotional situations. Other less consistent symptoms include hypnagogic hallucinations, sleep paralysis, disturbed nighttime sleep, and weight gain. Narcolepsy with cataplexy remains a clinical diagnosis but nighttime and daytime polysomnography (multiple sleep latency tests) are useful to document mean sleep latency below 8 min and at least two sleep-onset REM periods...
June 2016: La Revue du Praticien
https://www.readbyqxmd.com/read/27515691/validation-of-antibodies-for-neuroanatomical-localization-of-the-p2y11-receptor-in-macaque-brain
#18
Karin Dreisig, Matilda Degn, Louise Sund, Piotr Hadaczek, Lluis Samaranch, Waldy San Sebastian, Krystof Bankiewicz, Birgitte Rahbek Kornum
Focus on the purinergic receptor P2Y11 has increased following the finding of an association between the sleep disorder narcolepsy and a genetic variant in P2RY11 causing decreased gene expression. Narcolepsy is believed to arise from an autoimmune destruction of the hypothalamic neurons that produce the neuropeptide hypocretin/orexin. It is unknown how a decrease in expression of P2Y11 might contribute to an autoimmune reaction towards the hypocretin neurons and the development of narcolepsy. To advance narcolepsy research it is therefore extremely important to determine the neuroanatomical localization of P2Y11 in the brain with particular emphasis on the hypocretin neurons...
December 2016: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/27319232/-clinical-implications-of-polycystic-ovary-syndrome
#19
Ingrid Dravecká
UNLABELLED: Polycystic ovary syndrome (PCOS) is a heterogeneous and complex endocrine disease which among the female population belongs to the most widespread endocrinopathies and it is the most frequent cause of hyperthyroidism, anticoagulation and infertility. Insulin resistance is one of the important diabetology factors impacting hyperglycaemia in a majority of women with PCOS (60-80 %). Clinical expressions of PCOS include reproduction disorders, metabolic characteristics and psychological implications...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27298657/comorbidity-of-narcolepsy-type-1-with-autoimmune-diseases-and-other-immunopathological-disorders-a-case-control-study
#20
Francisco Javier Martinez-Orozco, Jose Luis Vicario, Clara De Andres, Miguel Fernandez-Arquero, Rosa Peraita-Adrados
BACKGROUND: Several evidences suggest that autoimmune diseases (ADs) tend to co-occur in an individual and within the same family. Narcolepsy type 1 (NT1) is a chronic sleep disorder caused by a selective loss of hypocretin-producing neurons due to a mechanism of neural destruction that indicates an autoimmune pathogenesis, although no evidence is available. We report on the comorbidity of ADs and other immunopathological diseases (including allergy diseases) in narcolepsy. METHODS: We studied 158 Caucasian NT1 patients (60...
July 2016: Journal of Clinical Medicine Research
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