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OSA oxidative stress

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https://www.readbyqxmd.com/read/28374233/neurological-deficits-in-obstructive-sleep-apnea
#1
REVIEW
Luigi Ferini-Strambi, Giulia Elisabetta Lombardi, Sara Marelli, Andrea Galbiati
Obstructive sleep apnea (OSA) is the most common sleep-related breathing disorder characterized by repetitive episodes of complete or partial obstruction of the upper airway. The prevalence of this disorder is strictly dependent on its gravity. At ≥15 events/h apnea-hypopnea index (AHI), it ranges from 6 to 17% in the general population, with higher rates in men and increasing with age. The hypoxia induced by OSA severely affects the structure and function of blood vessels, culminating in mortality and morbidity...
April 2017: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/28240319/aorta-macrophage-inflammatory-and-epigenetic-changes-in-a-murine-model-of-obstructive-sleep-apnea-potential-role-of-cd36
#2
Rene Cortese, Alex Gileles-Hillel, Abdelnaby Khalyfa, Isaac Almendros, Mahzad Akbarpour, Ahamed A Khalyfa, Zhuanghong Qiao, Tzintzuni Garcia, Jorge Andrade, David Gozal
Obstructive sleep apnea (OSA) affects 8-10% of the population, is characterized by chronic intermittent hypoxia (CIH), and causally associates with cardiovascular morbidities. In CIH-exposed mice, closely mimicking the chronicity of human OSA, increased accumulation and proliferation of pro-inflammatory metabolic M1-like macrophages highly expressing CD36, emerged in aorta. Transcriptomic and MeDIP-seq approaches identified activation of pro-atherogenic pathways involving a complex interplay of histone modifications in functionally-relevant biological pathways, such as inflammation and oxidative stress in aorta macrophages...
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28236270/oxidative-and-carbonyl-stress-in-pregnant-women-with-obstructive-sleep-apnea
#3
Nazia Khan, Geralyn Lambert-Messerlian, Joao Filipe Monteiro, Julius Hodosy, Ľubomíra Tóthová, Peter Celec, Elizabeth Eklund, Patrizia Curran, Ghada Bourjeily
PURPOSE: Pregnant women are particularly susceptible to sleep-disordered breathing. Obstructive sleep apnea (OSA) in pregnancy is associated with poor pregnancy and fetal outcomes. Oxidative stress caused by intermittent hypoxemia and reoxygenation may impact pregnancy health. We hypothesize that pregnant women with OSA have a pronounced oxidative stress profile. METHODS: A case-control study was performed to study oxidative stress markers in the serum of pregnant women with or without OSA...
February 24, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28218220/establishment-of-a-rabbit-model-of-chronic-obstructive-sleep-apnea-and-application-in-cardiovascular-consequences
#4
Li-Fang Xu, Xiu-Fang Zhou, Ke Hu, Si Tang, Yu-Chuan Luo, Wen Lu
BACKGROUND: Although obstructive sleep apnea (OSA) has been recognized as a major risk factor for cardiovascular complications and its clinical features are well characterized, it is difficult to replicate the OSA hypoxic model in humans. We aimed to establish an experimental rabbit model for chronic OSA and to explore its application to measure blood pressure (BP), myocardial systolic function, and oxidative stress. METHODS: The rabbit model for OSA was established by repeatedly closing the airway and then reopening it...
February 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28207497/concurrent-presence-of-inflammation-and-obstructive-sleep-apnea-exacerbates-the-risk-of-metabolic-syndrome-a-koges-6-year-follow-up-study
#5
Jinkwan Kim, Dae Wui Yoon, Seung Ku Lee, Seunggwan Lee, Kyung-Mee Choi, Thomas J Robert, Chol Shin
Obstructive sleep apnea (OSA) leads to multiple end-organ morbidities that are mediated by the cumulative burden of oxidative stress and inflammation. Both OSA and inflammation play key roles in increased risk of cardiovascular disease (CVD). Thus, we hypothesized that the combination of inflammation and OSA could accelerate the development of metabolic syndrome (MetS) in a large cohort study.A total of 1835 participants were randomly selected from the ongoing Korean Genome and Epidemiology Study for the years between 2007 and 2015...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28177332/a-comparative-study-on-oxidative-stress-role-in-nasal-breathing-impairment-and-obstructive-sleep-apnoea-syndrome
#6
D Passali, G Corallo, A Petti, M Longini, F M Passali, G Buonocore, L M Bellussi
Obstructive sleep apnoea syndrome (OSAS) is a sleep disorder that leads to metabolic abnormalities and increased cardiovascular risk. This study aimed to define the expression and clinical significance of biomarkers involved in oxidative stress in patients with OSAS. A prospective study was designed to compare outcomes of oxidative stress laboratory tests in three groups of subjects. The study involved the recruitment of three groups of subjects, 10 patients with obstructive sleep apnoea syndrome with AHI > 30; 10 patients suffering from snoring at night with AHI < 15; 10 patients with nasal respiratory impairment with AHI < 5...
December 2016: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28167915/the-role-of-acute-intermittent-hypoxia-in-neutrophil-generated-superoxide-sympathovagal-balance-and-vascular-function-in-healthy-subjects
#7
Germana P L Almeida, Ivani C Trombetta, Felipe X Cepeda, Elaine Hatanaka, Rui Curi, Cristiano Mostarda, Maria C Irigoyen, José A S Barreto-Filho, Eduardo M Krieger, Fernanda M Consolim-Colombo
Introduction: Recurrent hypoxia (HPX), a hallmark of the obstructive sleep apnea (OSA), impairs autonomic balance, and increases arterial blood pressure (BP). Oxidative stress is one of the mechanisms involved in these alterations. The cumulative effect of acute intermittent HPX and the chronicity may determine whether the response crosses the threshold from having protective value to pathology. However, the impact of acute intermittent HPX-reoxygenation on markers of oxidative stress in healthy individuals remains to be fully understood...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28149928/evening-and-morning-alterations-in-obstructive-sleep-apnea-red-blood-cell-proteome
#8
Amélia Feliciano, Fátima Vaz, Cristina Valentim-Coelho, Vukosava M Torres, Rita Silva, Vesna Prosinecki, Bruno M Alexandre, Andreia Almeida, Catarina Almeida-Marques, Ana S Carvalho, Rune Matthiesen, Atul Malhotra, Paula Pinto, Cristina Bárbara, Deborah Penque
This article presents proteomics data referenced in [1] Using proteomics-based evaluation of red blood cells (RBCs), we have identified differentially abundant proteins associated with Obstructive Sleep Apnea Syndrome (OSA). RBCs were collected from peripheral blood of patients with moderate/severe OSA or snoring at pre- (evening) and post-night (morning) polysomnography, so that proteome variations between these time points could be assessed. RBC cytoplasmic fraction depleted of hemoglobin, using Hemovoid(™) system, were analyzed by two-dimensional fluorescence difference gel electrophoresis (2D-DIGE), the 2D image software-based analyzed and relevant differentially abundant proteins identified by mass spectrometry (MS)...
April 2017: Data in Brief
https://www.readbyqxmd.com/read/28121361/the-role-of-oxidative-stress-in-the-relation-between-fibromyalgia-and-obstructive-sleep-apnea-syndrome
#9
T Yildirim, R Alp
OBJECTIVE: The aim of this study is to examine the involvement of oxidative and antioxidative parameters and to evaluate the relation between fibromyalgia (FMS) and obstructive sleep apnea syndrome (OSAS). PATIENTS AND METHODS: Oxidative stress was determined by measuring the levels of malondialdehyde (MDA) and antioxidative parameters (superoxide dismutase [SOD], catalase [CAT], and glutathione peroxidase [GPx]) in 131 randomly selected patients with OSAS. The control group was composed of 129 subjects with no clinical OSAS symptoms...
January 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28065687/restless-legs-syndrome-and-cardiovascular-disease-a-research-roadmap
#10
REVIEW
Daniel J Gottlieb, Virend K Somers, Naresh M Punjabi, John W Winkelman
In this paper, we first critically appraise the epidemiologic literature examining the association of restless legs syndrome (RLS) with cardiovascular disease (CVD) and then consider whether lessons learned from the study of cardiovascular consequences of other sleep disorders might inform a research agenda to examine the potential mechanisms of cardiovascular morbidity of RLS. Cross-sectional and longitudinal studies are both mixed as to whether there is a meaningful association of RLS and CVD. On the other hand, numerous cross-sectional and longitudinal observational studies have shown a strong association of obstructive sleep apnea (OSA) with CVD risk...
March 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28040290/obstructive-sleep-and-atrial-fibrillation-pathophysiological-mechanisms-and-therapeutic-implications
#11
REVIEW
Christos A Goudis, Dimitrios G Ketikoglou
Atrial fibrillation (AF) is the commonest arrhythmia in clinical practice and is associated with increased cardiovascular morbidity and mortality. Obstructive sleep apnea (OSA), a common breathing disorder, is an independent risk factor for AF. Several pathophysiological mechanisms, including apnea-induced hypoxia, intrathoracic pressure shifts, sympathovagal imbalance, atrial remodeling, oxidative stress, inflammation and neurohumoral activation have been implicated in the occurrence of AF in OSA patients...
March 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28000217/thiol-disulfide-homeostasis-as-a-novel-indicator-of-oxidative-stress-in-obstructive-sleep-apnea-patients
#12
Mehmet Emre Dinc, Cengiz Ozdemir, Nilhan Nurlu Ayan, Nazım Bozan, Seckin Ulusoy, Cemile Koca, Ozcan Erel
OBJECTIVES: The aim of the present study was to assess thiol/disulfide (SS) homeostasis as a novel indicator of oxidative stress in patients with obstructive sleep apnea (OSA) and to investigate the effect of continuous positive airway pressure (CPAP) therapy on oxidative parameters. STUDY DESIGN: Prospective clinical study. METHODS: A total of 104 subjects, 44 in an OSA group and 60 in two control groups (control simple snoring group, control OSA group) were included...
December 21, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27921430/-obstructive-sleep-apnoea-and-type-2-diabetes-mellitus
#13
Andrea Plíhalová, Kateřina Westlake, Jan Polák
Obstructive sleep apnoea syndrome (OSA) is a disease very frequently occurring in people with type 2 diabetes, that significantly increases cardiovascular morbidity and mortality. In a number of studies, OSA has been identified as an independent risk factor for the development of insulin resistance, glucose intolerance and type 2 diabetes mellitus. Disorders of glucose homeostasis in patients with OSA are probably mediated by chronic intermittent hypoxia and/or sleep fragmentation through activation of the sympathetic nervous system, the hypothalamic-pituitary-adrenal stress axis, pro-inflammatory paths or oxidative stress...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27896929/impact-of-inflammation-and-oxidative-stress-on-carotid-intima-media-thickness-in-obstructive-sleep-apnea-patients-without-metabolic-syndrome
#14
Ya-Ting Chang, Hsin-Ching Lin, Wen-Neng Chang, Nai-Wen Tsai, Chih-Cheng Huang, Hung-Chen Wang, Chia-Te Kung, Yu-Jih Su, Wei-Che Lin, Ben-Chung Cheng, Chih-Min Su, Ting-Yao Chen, Yi-Fang Chiang, Cheng-Hsien Lu
Obstructive sleep apnea (OSA) increases the risk of cardiovascular diseases, and carotid intima-media thickness (IMT) is a good indicator of the severity of atherosclerotic disease. This study tested the hypothesis that inflammation and oxidative stress determined carotid IMT in patients with OSA. The carotid IMT, mean systolic and diastolic pressure (night and morning) were significantly higher and the level of thiols and high-density lipoprotein were significantly lower in our 121 OSA patients than in 27 controls (P < 0...
November 28, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27876406/adenotonsillectomy-can-decrease-enuresis-and-sympathetic-nervous-activity-in-children-with-obstructive-sleep-apnea-syndrome
#15
Hao Ding, Mengmei Wang, Ke Hu, Jing Kang, Si Tang, Wen Lu, Lifang Xu
BACKGROUND: The nocturnal intermittent hypoxia caused by obstructive sleep apnea syndrome (OSAS) can provoke the sympathetic nervous activity (SNA). Salivary alpha-amylase (sAA) is a sensitive, non-invasive biomarker for reflecting the SNA, and a useful marker for pediatric OSAS subjects. Adenotonsillar hypertrophy (ATH) is the most commonly identified risk factor in OSAS childhood, therefore, several studies showed that the adenotonsillectomy (T&A) may alleviate nocturnal enuresis (NE) in children with OSAS...
February 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/27864139/evening-and-morning-peroxiredoxin-2-redox-oligomeric-state-changes-in-obstructive-sleep-apnea-red-blood-cells-correlation-with-polysomnographic-and-metabolic-parameters
#16
Amélia Feliciano, Fátima Vaz, Vukosava M Torres, Cristina Valentim-Coelho, Rita Silva, Vesna Prosinecki, Bruno M Alexandre, Ana S Carvalho, Rune Matthiesen, Atul Malhotra, Paula Pinto, Cristina Bárbara, Deborah Penque
We have examined the effects of Obstructive Sleep Apnea (OSA) on red blood cell (RBC) proteome variation at evening/morning day time to uncover new insights into OSA-induced RBC dysfunction that may lead to OSA manifestations. Dysregulated proteins mainly fall in the group of catalytic enzymes, stress response and redox regulators such as peroxiredoxin 2 (PRDX2). Validation assays confirmed that at morning the monomeric/dimeric forms of PRDX2 were more overoxidized in OSA RBC compared to evening samples. Six month of positive airway pressure (PAP) treatment decreased this overoxidation and generated multimeric overoxidized forms associated with chaperone/transduction signaling activity of PRDX2...
February 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27856716/relationship-between-obstructive-sleep-apnea-and-endogenous-carbon-monoxide
#17
Masanori Azuma, Kimihiko Murase, Ryo Tachikawa, Satoshi Hamada, Takeshi Matsumoto, Takuma Minami, Morito Inouchi, Kiminobu Tanizawa, Tomohiro Handa, Toru Oga, Michiaki Mishima, Kazuo Chin
Endogenous carbon monoxide (CO) levels are recognized as a surrogate marker for activity of heme oxygenase-1, which is induced by various factors, including hypoxia and oxidative stress. Few reports have evaluated endogenous CO in patients with obstructive sleep apnea (OSA). Whether OSA more greatly affects exhaled or blood CO is not known. Sixty-nine patients with suspected OSA were prospectively included in this study. Exhaled and blood CO were evaluated at night and morning. Blood and exhaled CO levels were well correlated both at night and morning (r = 0...
January 1, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27843225/glaucoma-and-its-association-with-obstructive-sleep-apnea-a-narrative-review
#18
REVIEW
Aditya Chaitanya, Vijaya H Pai, Aswini Kumar Mohapatra, Ramesh S Ve
Obstructive sleep apnea (OSA) is one of the systemic risk factors for glaucoma which causes irreversible visual field (VF) damage. We reviewed the published data of all types of studies on the association between these two conditions and papers regarding functional and structural changes related to glaucomatous damage using Scopus, web of science, and PubMed databases. There is evidence that the prevalence of glaucoma is higher in OSA patients, which independent of intraocular pressure (IOP). Studies have reported thinning of retinal nerve fiber layer (RNFL), alteration of optic nerve head, choroidal and macular thickness, and reduced VF sensitivity in patients of OSA with no history glaucoma...
September 2016: Oman Journal of Ophthalmology
https://www.readbyqxmd.com/read/27800512/chronic-intermittent-hypoxia-and-obstructive-sleep-apnea-an-experimental-and-clinical-approach
#19
REVIEW
Emilia Sforza, Fréderic Roche
Obstructive sleep apnea (OSA) is a prevalent sleep disorder considered as an independent risk factor for cardiovascular consequences, such as systemic arterial hypertension, ischemic heart disease, cardiac arrhythmias, metabolic disorders, and cognitive dysfunction. The pathogenesis of OSA-related consequence is assumed to be chronic intermittent hypoxia (IH) inducing alterations at the molecular level, oxidative stress, persistent systemic inflammation, oxygen sensor activation, and increase of sympathetic activity...
2016: Hypoxia
https://www.readbyqxmd.com/read/27790155/exercise-attenuates-intermittent-hypoxia-induced-cardiac-fibrosis-associated-with-sodium-hydrogen-exchanger-1-in-rats
#20
Tsung-I Chen, Wei-Chia Tu
Purpose: To investigate the role of sodium-hydrogen exchanger-1 (NHE-1) and exercise training on intermittent hypoxia-induced cardiac fibrosis in obstructive sleep apnea (OSA), using an animal model mimicking the intermittent hypoxia of OSA. Methods: Eight-week-old male Sprague-Dawley rats were randomly assigned to control (CON), intermittent hypoxia (IH), exercise (EXE), or IH combined with exercise (IHEXE) groups. These groups were randomly assigned to subgroups receiving either a vehicle or the NHE-1 inhibitor cariporide...
2016: Frontiers in Physiology
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