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sleep apnea and inflammation

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https://www.readbyqxmd.com/read/29233741/cyclooxygenase-enzyme-activity-does-not-impair-respiratory-motor-plasticity-after-one-night-of-intermittent-hypoxia
#1
Adrianne G Huxtable, Elizabeth Kopp, Brendan J Doughtery, Jyoti J Watters, Gordon S Mitchell
Although inflammation is prevalent in many clinical disorders challenging breathing, we are only beginning to understand the impact of inflammation on neural mechanisms of respiratory control. We recently demonstrated one form of respiratory motor plasticity is extremely sensitive to even mild inflammation induced by a single night (8hours) of intermittent hypoxia (IH-1), mimicking aspects of obstructive sleep apnea. Specifically, phrenic long-term facilitation (pLTF) following moderate acute intermittent hypoxia (AIH) is abolished by IH-1, but restored by high doses of the non-steroidal anti-inflammatory drug, ketoprofen...
December 9, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/29224135/serum-ferritin-and-obstructive-sleep-apnea-epidemiological-study
#2
Elin H Thorarinsdottir, Erna S Arnardottir, Bryndis Benediktsdottir, Christer Janson, Isleifur Olafsson, Allan I Pack, Thorarinn Gislason, Brendan T Keenan
PURPOSE: Ferritin is an intracellular iron storage protein and a marker of inflammation. Studies have shown that subjects with obstructive sleep apnea (OSA) have higher levels of circulating pro-inflammatory cytokines, but little is known about the association between ferritin and OSA. The aims of the study were to evaluate serum ferritin (S-Ferritin) levels in OSA patients compared to levels in the general population and also examine the effect of obesity level and treatment with positive airway pressure (PAP) on S-Ferritin levels...
December 9, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29174411/gestational-intermittent-hypoxia-increases-susceptibility-to-neuroinflammation-and-alters-respiratory-motor-control-in-neonatal-rats
#3
REVIEW
Stephen M Johnson, Karanbir S Randhawa, Jenna J Epstein, Ellen Gustafson, Austin D Hocker, Adrianne G Huxtable, Tracy L Baker, Jyoti J Watters
Sleep disordered breathing (SDB) and obstructive sleep apnea (OSA) during pregnancy are growing health concerns because these conditions are associated with adverse outcomes for newborn infants. SDB/OSA during pregnancy exposes the mother and the fetus to intermittent hypoxia. Direct exposure of adults and neonates to IH causes neuroinflammation and neuronal apoptosis, and exposure to IH during gestation (GIH) causes long-term deficits in offspring respiratory function. However, the role of neuroinflammation in CNS respiratory control centers of GIH offspring has not been investigated...
November 22, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/29168015/ascending-aortic-blood-flow-velocity-is-increased-in-children-with-primary-snoring-mild-sleep-disordered-breathing-and-associated-with-an-increase-in-cd8-%C3%A2-t-cells-expressing-tnf%C3%AE-and-ifn%C3%AE
#4
Anna Kontos, Scott Willoughby, Cameron van den Heuvel, Declan Kennedy, James Martin, Greg Hodge, Matthew Worthley, Adelene Kaihui Chin, Adam Nelson, Karen Teo, Mathias Baumert, Yvonne Pamula, Kurt Lushington
Sleep-disordered breathing (SDB) is associated with cardiovascular disease and systemic inflammation in adults but this remains to be explored in children, especially in children with the most common form of SDB, i.e. primary snoring/mild SDB. This pilot study investigated the relationship between the cardiovascular function and inflammation in children with mild SDB. Nineteen participants aged 5-14 years underwent overnight polysomnography, cardiac magnetic resonance imaging (aortic blood flow velocity and left and right ventricular systolic function) and assessment for inflammatory markers (intracellular cytokine analysis of T cells by flow cytometry)...
November 22, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/29153412/role-of-lung-volume-and-airway-inflammation-in-obstructive-sleep-apnea
#5
REVIEW
Andras Bikov, Gyorgy Losonczy, Laszlo Kunos
Obstructive sleep apnea (OSA) is a prevalent disorder that affects not only the upper airways but also the intrathoracic airways. In this review, we summarize the results of studies on lung function and airway inflammation. We provide evidence that the alterations in intrathoracic airways observed in OSA are not purely consequences of mechanical trauma and oxidative stress during apneic events but have a causal role in the structural changes associated with OSA and increasing severity of this disorder.
November 2017: Respiratory Investigation
https://www.readbyqxmd.com/read/29135910/sleep-disordered-breathing-in-children-with-recurrent-wheeze-asthma-a-single-centre-study
#6
Marco Zaffanello, Emma Gasperi, Laura Tenero, Michele Piazza, Angelo Pietrobelli, Luca Sacchetto, Franco Antoniazzi, Giorgio Piacentini
The relationship between asthma and sleep-disordered breathing is bidirectional due to common risk factors that promote airway inflammation. Obstructive sleep-disordered breathing and recurrent wheeze/asthma are conditions that involve the upper and the lower respiratory system, respectively. The aim of the present study was to investigate the sleep disordered breathing in children with recurrent wheeze/asthma. This was a retrospective study concerning children older than 2 years who underwent-between January 2014 and November 2016-an in-laboratory overnight polygraphic study...
November 14, 2017: Children
https://www.readbyqxmd.com/read/29126756/-vascular-dysfunction-in-obstructive-sleep-apnoea-implication-of-microparticules
#7
REVIEW
W Trzepizur, P Priou, N Meslier, T Urban, M C Martínez, R Andriantsitohaina, F Gagnadoux
Obstructive sleep apnea (OSA) is associated with increased cardiovascular diseases, including myocardial infarction and stroke and promotes cardiovascular risk factors including diabetes and hypertension. OSA has also been proposed to have a direct proatherogenic effects. Recent studies have investigated the role of microparticles (MPs) in the atherogenic process. MPs are small plasma membrane vesicles that can be released by a variety of vascular or blood cells and that contain membrane and cytosolic elements...
November 7, 2017: Revue de Pneumologie Clinique
https://www.readbyqxmd.com/read/29108893/bariatric-surgery-as-a-treatment-for-heart-failure-review-of-the-literature-and-potential-mechanisms
#8
Tammy L Kindel, Jennifer L Strande
Heart failure due to severe obesity is a complex disease due to multiple mechanisms, including increased body mass, inflammation, and impaired cardiac metabolism that is complicated by obesity-associated co-morbidities, such as type 2 diabetes and obstructive sleep apnea. Bariatric surgery significantly improves cardiac geometry, function, and symptoms related to obesity cardiomyopathy. There is a consistently positive impact of bariatric surgery on diastolic function with the potential to significantly improve systolic function as measured by ejection fraction in patients with advanced heart failure...
October 2, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/29067957/hepatic-cyp1a2-expression-reduction-during-inflammation-elicited-in-a-rat-model-of-intermittent-hypoxia
#9
Li-Xia Shi, Xing Wang, Qi Wu, Xin Sun, Zhen Wan, Li Li, Kuan Li, Xue Li, Yu Li, Qiu-Yang Zhang, Jun-Ping Wu, Huai-Yong Chen
BACKGROUND: Intermittent hypoxia (IH) is a key element of obstructive sleep apnea (OSA) that can lead to disorders in the liver. In this study, IH was established in a rat model to examine its effects on the expression of hepatic cytochrome P450 (CYP) and CYP regulators, including nuclear receptors. METHODS: Hematoxylin and eosin staining was conducted to analyze the general pathology of the liver of rats exposed to IH. The messenger RNA (mRNA) expression levels of inflammatory cytokines, CYPs, nuclear factor-κB (NF-κB), and nuclear factors in the liver were measured by quantitative reverse transcription polymerase chain reaction...
November 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/29065958/dissociation-of-objective-and-subjective-daytime-sleepiness-and-biomarkers-of-systemic-inflammation-in-sleep-disordered-breathing-and-systolic-heart-failure
#10
Reena Mehra, Lu Wang, Noah Andrews, W H Wilson Tang, James B Young, Shahrokh Javaheri, Nancy Foldvary-Schaefer
STUDY OBJECTIVES: Subjective versus objective sleepiness in heart failure (HF) remains understudied; therefore, we sought to examine the association of these measures and interrelationships with biochemical markers. METHODS: Participants with stable systolic HF recruited from a clinic-based program underwent attended polysomnography, Multiple Sleep Latency Testing, questionnaire data collection including Epworth Sleepiness Scale (ESS), and morning phlebotomy for biochemical markers...
October 18, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/29057883/non-muscular-myosin-light-chain-kinase-triggers-intermittent-hypoxia-induced-interleukin-6-release-endothelial-dysfunction-and-permeability
#11
Sylvain Recoquillon, Manuel Gómez-Guzmán, Marion Rodier, Camille Koffi, Mathieu Nitiéma, Frédéric Gagnadoux, M Carmen Martínez, Ramaroson Andriantsitohaina
Obstructive sleep apnea is characterized by intermittent hypoxia (IH) which alters endothelial function, induces inflammation and accelerates atherosclerosis-induced cardiovascular diseases. The non-muscular myosin light chain kinase (nmMLCK) isoform contributes to endothelial cell-cell junction opening. Deletion of nmMLCK protects mice from death in septic shock models and prevents atherosclerosis in high-fat diet-fed mice. The aim of the study was to analyze the implication of nmMLCK in IH-induced vascular inflammation...
October 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29042934/intermittent-hypoxia-simulating-obstructive-sleep-apnea-causes-pulmonary-inflammation-and-activates-the-nrf2-ho-1-pathway
#12
Yeying Wang, Yanling Chai, Xiaojie He, Li Ai, Xia Sun, Yiling Huang, Yongxia Li
Obstructive sleep apnea (OSA) is a disorder with high morbidity in adults. OSA damages multiple organs and tissues, including the cardiovascular and cerebrovascular systems, the metabolism system, the lungs, liver and heart. OSA-induced damage is earliest and greatest to the pulmonary tissue. The present study established a rat OSA model of differing severity by inducing intermittent hypoxia with different concentrations of O2 and it was determined that OSA caused a severe oxidative stress response and pulmonary inflammation in a dose-dependent manner...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29038619/alteration-of-inflammatory-mediators-in-the-upper-and-lower-airways-under-chronic-intermittent-hypoxia-preliminary-animal-study
#13
Eun Jung Lee, Woon Heo, Joo Young Kim, Hyungchul Kim, Min Jung Kang, Bo Ra Kim, Ji Hyun Kim, Do Yang Park, Chang-Hoon Kim, Joo-Heon Yoon, Hyung-Ju Cho
PURPOSE: We hypothesized that CIH may affect the upper airway immune system and aimed to verify whether CIH can induce airway inflammation in a murine obstructive sleep apnea (OSA) model. METHODS: C57BL6 male mice were exposed to intermittent hypoxia (CIH group; 5 ~ 21% FiO2, 120 sec cycles, 12 h/d, n = 6) or room air (Sham group, n = 6) for up to 4 weeks in identical chambers. Nasal and lung tissues and lavage fluid were collected and analyzed by multiplex assay...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29029237/cpap-does-not-reduce-inflammatory-biomarkers-in-patients-with-coronary-artery-disease-and-nonsleepy-obstructive-sleep-apnea-a-randomized-controlled-trial
#14
Erik Thunström, Helena Glantz, Tülay Yucel-Lindberg, Kristin Lindberg, Mustafa Saygin, Yüksel Peker
Objectives: Obstructive sleep apnea (OSA) and enhanced vascular inflammation coexist in patients with coronary artery disease (CAD). Continuous positive airway pressure (CPAP) is first-line treatment for OSA with daytime sleepiness. This analysis of data from the RICCADSA (Randomized Intervention with CPAP in Coronary Artery Disease and Sleep Apnea) trial investigated the effects of CPAP on inflammatory markers in patients with CAD and nonsleepy OSA. Methods: This single-center, randomized, controlled, open-label trial enrolled consecutive revascularized patients with nonsleepy OSA (apnea-hypopnea index >15/h; Epworth Sleepiness Scale score <10)...
November 1, 2017: Sleep
https://www.readbyqxmd.com/read/29028081/serum-ykl-40-level-is-correlated-with-apnea-hypopnea-index-in-patients-with-obstructive-sleep-apnea-sindrome
#15
L C Mutlu, F Tülübaş, R Alp, G Kaplan, Z D Yildiz, A Gürel
OBJECTIVE: Obstructive sleep apnea syndrome (OSAS) has been associated with elevated biochemical markers of inflammation. Although the exact mechanism is unknown, both sleep deprivation and hypoxemia are believed to be important causative factors. YKL-40, also known as chitinase-like protein, has been shown to be related to various inflammatory conditions including atherosclerosis, diabetes, cancer, and asthma. The present study aimed to evaluate the relationship between YKL-40 levels and the Apnea Hypopnea Index (AHI) in patients with obstructive sleep apnea syndrome...
September 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28960823/changes-in-inflammatory-mediators-as-a-result-of-intermittent-hypoxia-in-obstructive-sleep-apnea-syndrome
#16
Volkan Sozer, Müge Kutnu, Ersan Atahan, Buket Calıskaner Ozturk, Ergi Hysi, Cansu Cabuk, Benan Musellim, Gonul Simsek, Hafize Uzun
BACKGROUND: Inflammation plays an important role in obstructive sleep apnea syndrome (OSAS). The objective of this study was to investigate the relationship of serum C-reactive protein(CRP), pentraxin-3(PTX-3), procalcitonin(ProCT), interleukin-33(IL-33) and its soluble receptor ST2 (sST2) with the syndrome severity and to show theirs importance as biomarkers. METHODS: This study comprises a total of 84 identical (sex and age wise) cases. Full-night polysomnography was performed in each patient...
September 29, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28955382/atrial-fibrillation-in-heart-failure-a-therapeutic-challenge-of-our-times
#17
REVIEW
Syeda Atiqa Batul, Rakesh Gopinathannair
Atrial fibrillation (AF) and heart failure (HF) are growing cardiovascular disease epidemics worldwide. There has been an exponential increase in the prevalence of AF and HF correlating with an increased burden of cardiac risk factors and improved survival rates in patients with structural heart disease. AF is associated with adverse prognostic outcomes in HF and is most evident in mild-to-moderate left ventricular (LV) dysfunction where the loss of "atrial kick" translates into poorer quality of life and increased mortality...
September 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28951419/group-a-streptococcal-pharyngitis-immune-responses-involved-in-bacterial-clearance-and-gas-associated-immunopathologies
#18
REVIEW
Amelia T Soderholm, Timothy C Barnett, Matthew J Sweet, Mark J Walker
Streptococcus pyogenes, the Group A Streptococcus (GAS), is the most common cause of bacterial pharyngitis in children and adults. Innate and adaptive host immune responses are fundamental for defense against streptococcal pharyngitis and are central to the clinical manifestation of disease. Host immune responses also contribute to the severe poststreptococcal immune diseases that constitute the major disease burden for this organism. However, until recently, little was known about the host responses elicited during infection...
September 26, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28947597/c-reactive-protein-improves-the-ability-to-detect-cardiometabolic-risk-in-mild-to-moderate-obstructive-sleep-apnea
#19
Jordan Gaines, Lan Kong, Menghan Li, Julio Fernandez-Mendoza, Edward O Bixler, Maria Basta, Alexandros N Vgontzas
Obstructive sleep apnea (OSA), particularly in the mild-to-moderate range, affects up to 40% of the adult general population. While it is clear that treatment should be pursued in severe cases of OSA, when and how to best treat OSA in the mild-to-moderate range remains complicated, despite its high prevalence. The aim of this study was to compare the relative utility of apnea/hypopnea index (AHI) versus a biomarker of inflammation, C-reactive protein (CRP), in identifying the presence and severity of hypertension and hyperglycemia...
September 2017: Physiological Reports
https://www.readbyqxmd.com/read/28939210/toward-a-blood-borne-biomarker-of-chronic-hypoxemia-red-cell-distribution-width-and-respiratory-disease
#20
Joseph W Yčas
Hypoxemia (systemic oxygen desaturation) marks the presence, risk, and progression of many diseases. Episodic or nocturnal hypoxemia can be challenging to detect and quantify. A sensitive, specific, and convenient marker of recent oxygen desaturation represents an unmet medical need. Observations of acclimatization to high altitude in humans and animals reveals several proteosomic, ventilatory, and hematological responses to low oxygen tension. Of these, increased red cell distribution width (RDW) appears to have the longest persistence...
2017: Advances in Clinical Chemistry
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