101
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Pandey A, Kar SK. Rapid Eye Movement sleep deprivation of rat generates ROS in the hepatocytes and makes them more susceptible to oxidative stress. ACTA ACUST UNITED AC 2018; 11:245-253. [PMID: 30746042 PMCID: PMC6361303 DOI: 10.5935/1984-0063.20180039] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Background Rapid Eye Movement sleep deprivation (REMSD) of rats causes inflammation of
the liver and apoptotic cell death of neurons and hepatocytes. Studies also
suggest that REM sleep deprivation can cause muscle as well as cardiac
injury and neurodegenerative diseases. Objective and methods The aim of this research was to determine whether REM sleep deprivation of
rats would increase the levels of reactive oxygen species (ROS) in the
hepatocytes and create oxidative stress in them. We selectively deprived the
rats for REM sleep using the standard flower pot method. Results We observed that when rats were subjected to REM sleep deprivation, the
levels of ROS in their hepatocytes increased ~184.33% compared to large
platform control (LPC) group by day 9 of deprivation, but it returned
towards normal level (~49.27%) after recovery sleep for 5 days. Nitric oxide
synthase (iNOS) gene expression and protein levels as determined by
real-time PCR and western blot analysis respectively were found to be
elevated in hepatocytes of REM sleep deprived rats as compared to the LPC
group. The level of nitric oxide (NO) in the hepatocytes of REMSD rats also
increased by ~404.40% as compared to the LPC group but sleep recovery for 5
days normalized the effect (~135.35% compared to LPC group). We used a large
platform control group as a reference group to compare with the REM sleep
deprived group as the effect on the hepatocytes of both LPC group and cage
control groups were not significantly different. Discussion We have analyzed the oxidative stress generated in the hepatocytes of rats
due to REM sleep deprivation and further consequences of it. REMS
deprivation not only increased the levels of ROS in the hepatocytes but also
induced iNOS and NO in them. REM sleep deprived hepatocytes became more
susceptible to oxidative stresses on further exposures. Furthermore, our
study has great pathological and physiological.
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Affiliation(s)
- Atul Pandey
- Jawaharlal Nehru University, School of Biotechnology - New Delhi - Delhi - India.,The Hebrew University of Jerusalem, Department of Ecology, Evolution and Behavior - Jerusalem - Jerusalem - Israel
| | - Santosh K Kar
- Jawaharlal Nehru University, School of Biotechnology - New Delhi - Delhi - India.,Kallinga Institute of Industrial Technology, School of Biotechnology - Bhubaneshwar - Bhubneshwar - India
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102
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Deering S, Liu L, Zamora T, Hamilton J, Stepnowsky C. CPAP Adherence is Associated With Attentional Improvements in a Group of Primarily Male Patients With Moderate to Severe OSA. J Clin Sleep Med 2017; 13:1423-1428. [PMID: 29065955 DOI: 10.5664/jcsm.6838] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 08/02/2017] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES Obstructive sleep apnea (OSA) is a widespread condition that adversely affects physical health and cognitive functioning. The prevailing treatment for OSA is continuous positive airway pressure (CPAP), but therapeutic benefits are dependent on consistent use. Our goal was to investigate the relationship between CPAP adherence and measures of sustained attention in patients with OSA. Our hypothesis was that the Psychomotor Vigilance Task (PVT) would be sensitive to attention-related improvements resulting from CPAP use. METHODS This study was a secondary analysis of a larger clinical trial. Treatment adherence was determined from CPAP use data. Validated sleep-related questionnaires and a sustained-attention and alertness test (PVT) were administered to participants at baseline and at the 6-month time point. RESULTS Over a 6-month time period, the average CPAP adherence was 3.32 h/night (standard deviation [SD] = 2.53), average improvement in PVT minor lapses was -4.77 (SD = 13.2), and average improvement in PVT reaction time was -73.1 milliseconds (standard deviation = 211). Multiple linear regression analysis showed that higher CPAP adherence was significantly associated with a greater reduction in minor lapses in attention after 6 months of continuous treatment with CPAP therapy (β = -0.72, standard error = 0.34, P = .037). CONCLUSIONS The results of this study showed that higher levels of CPAP adherence were associated with significant improvements in vigilance. Because the PVT is a performance-based measure that is not influenced by prior learning and is not subjective, it may be an important supplement to patient self-reported assessments. CLINICAL TRIAL REGISTRATION Name: Effect of Self-Management on Improving Sleep Apnea Outcomes, URL: https://clinicaltrials.gov/ct2/show/NCT00310310, Identifier: NCT00310310.
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Affiliation(s)
- Sean Deering
- Health Services Research and Development, VA San Diego Healthcare System, La Jolla, California
| | - Lin Liu
- Health Services Research and Development, VA San Diego Healthcare System, La Jolla, California.,Department of Family Medicine and Public Health, University of California San Diego, La Jolla, California
| | - Tania Zamora
- Health Services Research and Development, VA San Diego Healthcare System, La Jolla, California
| | | | - Carl Stepnowsky
- Health Services Research and Development, VA San Diego Healthcare System, La Jolla, California.,Department of Medicine, University of California San Diego, La Jolla, California
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103
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Laouafa S, Ribon-Demars A, Marcouiller F, Roussel D, Bairam A, Pialoux V, Joseph V. Estradiol Protects Against Cardiorespiratory Dysfunctions and Oxidative Stress in Intermittent Hypoxia. Sleep 2017. [PMID: 28633495 DOI: 10.1093/sleep/zsx104] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Study Objectives We tested the hypothesis that estradiol (E2) protects against cardiorespiratory disorders and oxidative stress induced by chronic intermittent hypoxia (CIH) in adult female rats. Methods Sprague-Dawley female rats (230-250 g) were ovariectomized and implanted with osmotic pumps delivering vehicle or E2 (0.5 mg/kg/d). After 14 days of recovery, the rats were exposed to CIH (21%-10% O2: 8 h/d, 10 cycles per hour) or room air (RA). After 7 days of CIH or RA exposure, we measured arterial pressures (tail cuff), metabolic rate (indirect calorimetry), minute ventilation, the frequency of sighs and apneas at rest, and ventilatory responses to hypoxia and hypercapnia (whole body plethysmography). We collected the cerebral cortex, brainstem, and adrenal glands to measure the activity of NADPH and xanthine oxidase (pro-oxidant enzymes), glutathione peroxidase, and the mitochondrial and cytosolic superoxide dismutase (antioxidant enzymes) and measured lipid peroxidation and advanced oxidation protein products (markers of oxidative stress). Results CIH increased arterial pressure, the frequency of apnea at rest, and the hypoxic and hypercapnic ventilatory responses and reduced metabolic rate. CIH also increased oxidant enzyme activities and decreased antioxidant activity in the cortex. E2 treatment reduced body weight and prevented the effects of CIH. Conclusions E2 prevents cardiorespiratory disorders and oxidative stress induced by CIH. These observations may help to better understand the underlying mechanisms linking menopause and occurrence of sleep apnea in women and highlight a potential advantage of hormone therapy.
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Affiliation(s)
- Sofien Laouafa
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec City, Québec, Canada.,CNRS, UMR 5023, Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Alexandra Ribon-Demars
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec City, Québec, Canada.,Univ Lyon, Université Claude Bernard Lyon 1, Laboratoire interuniversitaire de biologie de la motricité EA7424, Villeurbanne, France
| | - François Marcouiller
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec City, Québec, Canada
| | - Damien Roussel
- CNRS, UMR 5023, Universite´ Claude Bernard Lyon 1, Villeurbanne, France
| | - Aida Bairam
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec City, Québec, Canada
| | - Vincent Pialoux
- Univ Lyon, Université Claude Bernard Lyon 1, Laboratoire interuniversitaire de biologie de la motricité EA7424, Villeurbanne, France.,Institut Universitaire de France, Paris, France
| | - Vincent Joseph
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec City, Québec, Canada
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104
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Seyedsadjadi N, Berg J, Bilgin AA, Tung C, Grant R. Significant relationships between a simple marker of redox balance and lifestyle behaviours; Relevance to the Framingham risk score. PLoS One 2017; 12:e0187713. [PMID: 29107974 PMCID: PMC5673171 DOI: 10.1371/journal.pone.0187713] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 10/24/2017] [Indexed: 02/07/2023] Open
Abstract
Oxidative stress has been closely linked to the progressive cell damage associated with emerging non-communicable disease (NCDs). Early detection of these biochemical abnormalities before irreversible cell damage occurs may therefore be useful in identifying disease risk at an individual level. In order to test this hypothesis, this study assessed the relationship between a simple measure of redox status and lifestyle risk factors for NCDs, and the population-based risk score of Framingham. In a cross-sectional study design, 100 apparently healthy middle-aged males (n = 48) and females (n = 52) were asked to complete a comprehensive lifestyle assessment questionnaire, followed by body fat percentage and blood pressure measurements, and blood collection. The ratio of plasma total antioxidant capacity to hydroperoxide (TAC/HPX) was used as an index of redox balance. One-way ANOVA and multiple linear regression analysis were performed to analyse the association between TAC/HPX, lifestyle components and other plasma biomarkers. The TAC/HPX ratio was higher in males compared to females (t96 = 2.34, P = 0.021). TAC/HPX was also lower in participants with poor sleep quality (t93 = 2.39, P = 0.019), with high sleep apnoea risk (t62.2 = 3.32, P = 0.002), with high caffeine (F(2, 93) = 3.97, P = 0.022) and red meat intake (F(2, 93) = 5.55, P = 0.005). These associations were independent of gender. Furthermore, the TAC/HPX ratio decreased with increasing body fat percentage (F(2, 95) = 4.74, P = 0.011) and depression score (t94 = 2.38, P = 0.019), though these associations were dependent on gender. Importantly, a negative association was observed between TAC/HPX levels and the Framingham risk score in both males (r(45) = -0.39, P = 0.008) and females (r(50) = -0.33, P = 0.019) that was independent of other Framingham risk score components. Findings from this study suggests that a relatively simple measure of redox balance such as the TAC/HPX ratio may be a sensitive indicator of redox stress, and may therefore serve as a useful biomarker for assessing an individual's specific NCD risk linked to unhealthy lifestyle practices.
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Affiliation(s)
- Neda Seyedsadjadi
- School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Jade Berg
- Australasian Research Institute, Sydney Adventist Hospital, Sydney, New South Wales, Australia
| | - Ayse A. Bilgin
- Department of Statistics, Macquarie University, Sydney, New South Wales, Australia
| | - Chin Tung
- Australasian Research Institute, Sydney Adventist Hospital, Sydney, New South Wales, Australia
| | - Ross Grant
- School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
- Australasian Research Institute, Sydney Adventist Hospital, Sydney, New South Wales, Australia
- Sydney Adventist Hospital Clinical School, University of Sydney, Sydney, New South Wales, Australia
- * E-mail:
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105
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Polonis K, Somers VK, Becari C, Covassin N, Schulte PJ, Druliner BR, Johnson RA, Narkiewicz K, Boardman LA, Singh P. Moderate-to-severe obstructive sleep apnea is associated with telomere lengthening. Am J Physiol Heart Circ Physiol 2017; 313:H1022-H1030. [PMID: 28822964 PMCID: PMC5792204 DOI: 10.1152/ajpheart.00197.2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 07/27/2017] [Accepted: 08/10/2017] [Indexed: 12/15/2022]
Abstract
Obstructive sleep apnea (OSA) is associated with cardiometabolic diseases. Telomere shortening is linked to hypertension, diabetes mellitus, and cardiovascular diseases. Because these conditions are highly prevalent in OSA, we hypothesized that telomere length (TL) would be reduced in OSA patients. We identified 106 OSA and 104 non-OSA subjects who underwent polysomnography evaluation. Quantitative PCR was used to measure telomere length in genomic DNA isolated from peripheral blood samples. The association between OSA and TL was determined using unadjusted and adjusted linear models. There was no difference in TL between the OSA and non-OSA (control) group. However, we observed a J-shaped relationship between TL and OSA severity: the longest TL in moderate-to-severe OSA [4,918 ± 230 (SD) bp] and the shortest TL in mild OSA (4,735 ± 145 bp). Mean TL in moderate-to-severe OSA was significantly longer than in the control group after adjustment for age, sex, body mass index, hypertension, dyslipidemia, and depression (β = 96.0, 95% confidence interval: 15.4-176.6, P = 0.020). In conclusion, moderate-to-severe OSA is associated with telomere lengthening. Our findings support the idea that changes in TL are not unidirectional processes, such that telomere shortening occurs with age and disease but may be prolonged in moderate-to-severe OSA.NEW & NOTEWORTHY Here, we show that moderate-to-severe obstructive sleep apnea is associated with longer telomeres, independent of age and cardiovascular risk factors, challenging the hypothesis that telomere shortening is a unidirectional process related to age/disease. A better understanding of the mechanisms underlying telomere dynamics may identify targets for therapeutic intervention in cardiovascular aging/other chronic diseases.
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Affiliation(s)
- Katarzyna Polonis
- 1Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota; ,4Department of Hypertension and Diabetology, Medical University of Gdansk, Gdansk, Poland
| | - Virend K. Somers
- 1Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota;
| | - Christiane Becari
- 1Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota;
| | - Naima Covassin
- 1Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota;
| | - Phillip J. Schulte
- 2Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota;
| | - Brooke R. Druliner
- 3Division of Gastroenterology and Hepatology, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota; and
| | - Ruth A. Johnson
- 3Division of Gastroenterology and Hepatology, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota; and
| | - Krzysztof Narkiewicz
- 4Department of Hypertension and Diabetology, Medical University of Gdansk, Gdansk, Poland
| | - Lisa A. Boardman
- 3Division of Gastroenterology and Hepatology, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota; and
| | - Prachi Singh
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota;
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106
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Cardiovascular effects of oral appliance therapy in obstructive sleep apnea: A systematic review and meta-analysis. Sleep Med Rev 2017; 40:55-68. [PMID: 29195726 DOI: 10.1016/j.smrv.2017.10.004] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 10/10/2017] [Accepted: 10/18/2017] [Indexed: 11/24/2022]
Abstract
Obstructive sleep apnea (OSA) is associated with increased cardiovascular morbidity and mortality. This study systematically reviews the effects of oral appliance therapy (OAT) on a broad spectrum of cardiovascular outcomes. A literature search was performed up to December 31st 2016. Twenty-five relevant full-text articles were retrieved. Sixteen articles were considered methodologically sufficient, including 11 randomized controlled trials. Pooled data of the RCTs showed significant reductions in daytime systolic and diastolic blood pressure compared to baseline, but no significant reductions in heart rate, except for daytime heart rate when compared to inactive/placebo OAT. OAT and continuous positive airway pressure (CPAP) were equally effective in reducing blood pressure. Studies assessing the effect of OAT on heart rate variability, circulating cardiovascular biomarkers, and endothelial function and arterial stiffness, generally involved small numbers of patients, and were heterogeneous and inconclusive. Studies assessing the effect of OAT on cardiac function showed no effects on echocardiographic outcomes. One observational study showed that OAT was as effective as CPAP in reducing cardiovascular death. It could be speculated that OAT may lead to a reduction in long-term cardiovascular morbidity and mortality in OSA patients. However, further methodologically high quality, longitudinal studies are warranted to address this key question.
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107
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Lan XF, Zhang XJ, Lin YN, Wang Q, Xu HJ, Zhou LN, Chen PL, Li QY. Estradiol Regulates Txnip and Prevents Intermittent Hypoxia-Induced Vascular Injury. Sci Rep 2017; 7:10318. [PMID: 28871193 PMCID: PMC5583380 DOI: 10.1038/s41598-017-10442-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 08/09/2017] [Indexed: 12/18/2022] Open
Abstract
Chronic intermittent hypoxia (IH) contributes to obstructive sleep apnea (OSA)-related cardiovascular diseases through increasing oxidative stress. It has been widely recognized that estradiol decreases the risk for cardiovascular disease, but the estrogen replacement therapy is limited for its side effects. Thioredoxin (Trx) and its endogenous inhibitor, thioredoxin-interacting protein (Txnip), are associated with the protective effect of estradiol in some conditions. In this study, we aimed to explore whether estradiol could protect against IH-induced vascular injury, and the possible effect of Trx-1/Txnip in this process. Forty-eight adult female C57/BL6J mice were randomly divided into 4 groups, ovariectomy combined with IH group, sham operation combined with IH group, IH group and the control group. The mice treated with IH for 8 hrs/day, and 28 days. IH induced the injury of aorta, and ovariectomized mice were more prone to the IH-induced aortic injury, with higher level of oxidative stress. In vitro, estradiol increased Trx-1 level, but decreased the level of Txnip and oxidative stress in human umbilical vein endothelial cells (HUVECs) treated with IH for 16 hrs. Knock-down of Txnip by specific siRNA rescued oxidative stress and apoptosis. In conclusion, estradiol protects against IH-induced vascular injury, partially through the regulation of Trx-1/Txnip pathway.
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Affiliation(s)
- Xiao Fei Lan
- Department of Respiratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, No. 197 Ruijin Er Road, Shanghai, 200025, China.,Department of Respiratory Medicine, Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine, No. 1111 West Xianxia Road, Shanghai, 200335, China
| | - Xiu Juan Zhang
- Department of Respiratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, No. 197 Ruijin Er Road, Shanghai, 200025, China.,Department of Respiratory Medicine, Huashan Hospital, Fudan University School of Medicine, No.12 Middle, Urumqi Road, Shanghai, 200040, China
| | - Ying Ni Lin
- Department of Respiratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, No. 197 Ruijin Er Road, Shanghai, 200025, China
| | - Qiong Wang
- Department of Respiratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, No. 197 Ruijin Er Road, Shanghai, 200025, China
| | - Hua Jun Xu
- Department of Respiratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, No. 197 Ruijin Er Road, Shanghai, 200025, China.,Department of Otolaryngology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Otolaryngology Institute of Shanghai Jiao Tong University, No. 600 Yishan Road, Shanghai, 200233, China
| | - Li Na Zhou
- Department of Respiratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, No. 197 Ruijin Er Road, Shanghai, 200025, China
| | - Pei Li Chen
- Department of Respiratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, No. 197 Ruijin Er Road, Shanghai, 200025, China
| | - Qing Yun Li
- Department of Respiratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, No. 197 Ruijin Er Road, Shanghai, 200025, China.
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108
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Abstract
PURPOSE OF REVIEW Sleep-disordered breathing (SDB) is highly prevalent in heart failure (HF) and may confer significant stress to the cardiovascular system and increases the risk for future cardiovascular events. The present review will provide updates on the current understanding of the relationship of SDB and common HF biomarkers and the effect of positive airway pressure therapy on these biomarkers, with particular emphasis in patients with coexisting SDB and HF. RECENT FINDINGS Prior studies have examined the relationship between HF biomarkers and SDB, and the effect of SDB treatment on these biomarkers, with less data available in the context of coexisting SDB and HF. Overall, however, the association of SDB and circulating biomarkers has been inconsistent. Further research is needed to elucidate the relationship between biomarkers and SDB in HF, to evaluate the clinical utility of biomarkers over standard methods in large, prospective studies and also to assess the impact of treatment of SDB on these biomarkers in HF via interventional studies.
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Affiliation(s)
- Ying Y Zhao
- Sleep Care Solutions, 1835 Yonge Street, Suite 303, Toronto, Ontario, M4S 1X8, Canada.
| | - Reena Mehra
- Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, OH, USA
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109
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Ruchała M, Bromińska B, Cyrańska-Chyrek E, Kuźnar-Kamińska B, Kostrzewska M, Batura-Gabryel H. Obstructive sleep apnea and hormones - a novel insight. Arch Med Sci 2017; 13:875-884. [PMID: 28721156 PMCID: PMC5507108 DOI: 10.5114/aoms.2016.61499] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Accepted: 06/07/2016] [Indexed: 12/13/2022] Open
Abstract
Obstructive sleep apnea (OSA), a disorder characterized by repetitive collapse of the upper respiratory tract during sleep, occurs in about 4% of middle-aged men and 2% of women. The incidence of the disorder is rising due to an increase in obesity and ageing of the population. Patients with obstructive sleep apnea are at elevated risk of some endocrinal and metabolic disorders, which may lead to serious consequences including shortening of life expectancy. The recognition and understanding of interactions between local upper airway dysfunction and its endocrinal consequences is therefore vital. In this review we will focus on the influence of OSA on bone metabolism and endocrine homeostasis.
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Affiliation(s)
- Marek Ruchała
- Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
| | - Barbara Bromińska
- Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
| | - Ewa Cyrańska-Chyrek
- Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
| | - Barbara Kuźnar-Kamińska
- Department of Pulmonology, Allergology and Respiratory Oncology, Poznan University of Medical Sciences, Poznan, Poland
| | - Magdalena Kostrzewska
- Department of Pulmonology, Allergology and Respiratory Oncology, Poznan University of Medical Sciences, Poznan, Poland
| | - Halina Batura-Gabryel
- Department of Pulmonology, Allergology and Respiratory Oncology, Poznan University of Medical Sciences, Poznan, Poland
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110
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Ovarian steroids act as respiratory stimulant and antioxidant against the causes and consequences of sleep-apnea in women. Respir Physiol Neurobiol 2017; 239:46-54. [DOI: 10.1016/j.resp.2017.01.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 01/19/2017] [Accepted: 01/29/2017] [Indexed: 12/22/2022]
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111
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Chen S, Lin D, Gao Y, Cao X, Shen X. A novel antioxidant peptide derived from wheat germ prevents high glucose-induced oxidative stress in vascular smooth muscle cells in vitro. Food Funct 2017; 8:142-150. [DOI: 10.1039/c6fo01139j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A possible molecular mechanism of AOP in the inhibition of high glucose-induced ROS generation in VSMCs.
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Affiliation(s)
- Siyuan Chen
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing
- Nanjing University of Finance and Economics
- Nanjing 210023
- China
| | - Dingbo Lin
- Department of Nutritional Sciences
- Oklahoma State University
- Stillwater
- USA
| | - Yulong Gao
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing
- Nanjing University of Finance and Economics
- Nanjing 210023
- China
| | - Xiaozhou Cao
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing
- Nanjing University of Finance and Economics
- Nanjing 210023
- China
| | - Xinchun Shen
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing
- Nanjing University of Finance and Economics
- Nanjing 210023
- China
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112
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May AM, Van Wagoner DR, Mehra R. OSA and Cardiac Arrhythmogenesis: Mechanistic Insights. Chest 2017; 151:225-241. [PMID: 27693594 PMCID: PMC5989643 DOI: 10.1016/j.chest.2016.09.014] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 09/14/2016] [Accepted: 09/16/2016] [Indexed: 12/13/2022] Open
Abstract
A surge of data has reproducibly identified strong associations of OSA with cardiac arrhythmias. As an extension of epidemiologic and clinic-based findings, experimental investigations have made strides in advancing our understanding of the putative OSA and cardiac arrhythmogenesis mechanistic underpinnings. Although most studies have focused on the links between OSA and atrial fibrillation (AF), relationships with ventricular arrhythmias have also been characterized. Key findings implicate OSA-related autonomic nervous system fluctuations typified by enhanced parasympathetic activation during respiratory events and sympathetic surges subsequent to respiratory events, which contribute to augmented arrhythmic propensity. Other more immediate pathophysiologic influences of OSA-enhancing arrhythmogenesis include intermittent hypoxia, intrathoracic pressure swings leading to atrial stretch, and hypercapnia. Intermediate pathways by which OSA may trigger arrhythmia include increased systemic inflammation, oxidative stress, enhanced prothrombotic state, and vascular dysfunction. Long-term OSA-associated sequelae such as hypertension, atrial enlargement and fibrosis, ventricular hypertrophy, and coronary artery disease also predispose to cardiac arrhythmia. These factors can lead to a reduction in atrial effective refractory period, triggered and abnormal automaticity, and promote slowed and heterogeneous conduction; all of these mechanisms increase the persistence of reentrant arrhythmias and prolong the QT interval. Cardiac electrical and structural remodeling observed in OSA animal models can progress the arrhythmogenic substrate to further enhance arrhythmia generation. Future investigations clarifying the contribution of specific OSA-related mechanistic pathways to arrhythmia generation may allow targeted preventative therapies to mitigate OSA-induced arrhythmogenicity. Furthermore, interventional studies are needed to clarify the impact of OSA pathophysiology reversal on cardiac arrhythmogenesis and related adverse outcomes.
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Affiliation(s)
- Anna M May
- Division of Pulmonary, Critical Care, and Sleep Medicine, University Hospitals Cleveland Medical Center, Cleveland, OH.
| | - David R Van Wagoner
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH
| | - Reena Mehra
- Neurologic Institute, Respiratory Institute, Heart and Vascular Institute and Molecular Cardiology Department, Lerner Research Institute, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH
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113
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114
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Agra RM, Al-Daghri NM, Badimon L, Bodi V, Carbone F, Chen M, Cubedo J, Dullaart RPF, Eiras S, García-Monzón C, Gary T, Gnoni A, González-Rodríguez Á, Gremmel T, Hafner F, Hakala T, Huang B, Ickmans K, Irace C, Kholová I, Kimer N, Kytö V, März W, Miazgowski T, Møller S, Montecucco F, Niccoli G, Nijs J, Ozben S, Ozben T, Papassotiriou I, Papastamataki M, Reina-Couto M, Rios-Navarro C, Ritsch A, Sabico S, Seetho IW, Severino A, Sipilä J, Sousa T, Taszarek A, Taurino F, Tietge UJF, Tripolino C, Verloop W, Voskuil M, Wilding JPH. Research update for articles published in EJCI in 2014. Eur J Clin Invest 2016; 46:880-94. [PMID: 27571922 DOI: 10.1111/eci.12671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 08/26/2016] [Indexed: 02/05/2023]
Affiliation(s)
- Rosa María Agra
- Department of Cardiology and Coronary Unit, University Clinical Hospital of Santiago de Compostela, Santiago de Compostela, Spain.
| | - Nasser M Al-Daghri
- Biomarkers Research Program, Biochemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia.,Prince Mutaib Chair for Biomarkers of Osteoporosis, Biochemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Lina Badimon
- Cardiovascular Research Center (CSIC-ICCC), Barcelona, Spain.,Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain.,Cardiovascular Research Chair, UAB, Barcelona, Spain
| | - Vicente Bodi
- Cardiology Department, Hospital Clinico Universitario, INCLIVA, University of Valencia, Valencia, Spain
| | - Federico Carbone
- First Clinical of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Mao Chen
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Judit Cubedo
- Cardiovascular Research Center (CSIC-ICCC), Barcelona, Spain.,Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
| | - Robin P F Dullaart
- Department of Endocrinology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Sonia Eiras
- Health Research Institute, University Clinical Hospital of Santiago de Compostela, Santiago de Compostela, Spain
| | - Carmelo García-Monzón
- Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, CIBEREHD, Madrid, Spain
| | - Thomas Gary
- Division of Angiology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Antonio Gnoni
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari 'Aldo Moro', Bari, Italy
| | - Águeda González-Rodríguez
- Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, CIBEREHD, Madrid, Spain
| | - Thomas Gremmel
- Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | - Franz Hafner
- Division of Angiology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Tommi Hakala
- Department of Surgery, Tampere University Hospital, Tampere, Finland
| | - Baotao Huang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Kelly Ickmans
- Pain in Motion International Research Group, Vrije Universiteit Brussel, Brussels, Belgium.,Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium.,Department of Physical Medicine and Physiotherapy, University Hospital Brussels, Brussels, Belgium
| | - Concetta Irace
- Department of Clinical and Experimental Medicine, University Magna Graecia, Catanzaro, Italy
| | - Ivana Kholová
- Department of Pathology, Fimlab Laboratories, Tampere University Hospital, Tampere, Finland
| | - Nina Kimer
- Department of Clinical Physiology and Nuclear Medicine, Center for Functional and Diagnostic Imaging and Research, Faculty of Health Sciences, Hvidovre Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Ville Kytö
- Heart Center, Turku University Hospital, Turku, Finland.,Research Center of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland
| | - Winfried März
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria.,Vth Department of Medicine, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,Synlab Academy, Synlab Holding Deutschland GmbH, Mannheim, Augsburg, Germany
| | - Tomasz Miazgowski
- Department of Hypertension and Internal Medicine, Pomeranian Medical University, Szczecin, Poland
| | - Søren Møller
- Department of Clinical Physiology and Nuclear Medicine, Center for Functional and Diagnostic Imaging and Research, Faculty of Health Sciences, Hvidovre Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Fabrizio Montecucco
- First Clinical of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy.,IRCCS AOU San Martino-IST, Genoa, Italy.,Centre of Excellence for Biomedical Research (CEBR), University of Genoa, Genoa, Italy
| | | | - Jo Nijs
- Pain in Motion International Research Group, Vrije Universiteit Brussel, Brussels, Belgium.,Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium.,Department of Physical Medicine and Physiotherapy, University Hospital Brussels, Brussels, Belgium
| | - Serkan Ozben
- Department of Neurology, Antalya Training and Research Hospital, Antalya, Turkey
| | - Tomris Ozben
- Department of Medical Biochemistry, Medical Faculty, Akdeniz University, Antalya, Turkey
| | - Ioannis Papassotiriou
- Department of Clinical Biochemistry, 'Aghia Sophia' Children's Hospital, Athens, Greece
| | - Maria Papastamataki
- Department of Clinical Biochemistry, 'Aghia Sophia' Children's Hospital, Athens, Greece
| | - Marta Reina-Couto
- Departamento de Farmacologia e Terapêutica, Faculdade de Medicina da Universidade do Porto, Porto, Portugal.,MedInUP - Centro de Investigação Farmacológica e Inovação Medicamentosa, Universidade do Porto, Porto, Portugal.,Departamento de Medicina Intensiva, Centro Hospitalar São João, Porto, Portugal
| | - Cesar Rios-Navarro
- Cardiology Department, Hospital Clinico Universitario, INCLIVA, University of Valencia, Valencia, Spain
| | - Andreas Ritsch
- Department of Internal Medicine, Medical University of Innsbruck, Innsbruck, Austria
| | - Shaun Sabico
- Biomarkers Research Program, Biochemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia.,Prince Mutaib Chair for Biomarkers of Osteoporosis, Biochemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ian W Seetho
- Obesity and Endocrinology Research Group, University Hospital Aintree, University of Liverpool, Liverpool, UK
| | | | - Jussi Sipilä
- North Karelia Central Hospital, Joensuu, Finland.,Division of Clinical Neurosciences, Turku University Hospital, Turku, Finland.,Department of Neurology, University of Turku, Turku, Finland
| | - Teresa Sousa
- Departamento de Farmacologia e Terapêutica, Faculdade de Medicina da Universidade do Porto, Porto, Portugal.,MedInUP - Centro de Investigação Farmacológica e Inovação Medicamentosa, Universidade do Porto, Porto, Portugal
| | - Aleksandra Taszarek
- Department of Hypertension and Internal Medicine, Pomeranian Medical University, Szczecin, Poland
| | - Federica Taurino
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy
| | - Uwe J F Tietge
- Department of Pediatrics, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Cesare Tripolino
- Department of Clinical and Experimental Medicine, University Magna Graecia, Catanzaro, Italy
| | - Willemien Verloop
- Department of Cardiology, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Michiel Voskuil
- Department of Cardiology, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - John P H Wilding
- Obesity and Endocrinology Research Group, University Hospital Aintree, University of Liverpool, Liverpool, UK
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115
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Role of Oxidative Stress in the Neurocognitive Dysfunction of Obstructive Sleep Apnea Syndrome. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:9626831. [PMID: 27774119 PMCID: PMC5059616 DOI: 10.1155/2016/9626831] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Accepted: 09/01/2016] [Indexed: 01/28/2023]
Abstract
Obstructive sleep apnea syndrome (OSAS) is characterized by chronic nocturnal intermittent hypoxia and sleep fragmentations. Neurocognitive dysfunction, a significant and extraordinary complication of OSAS, influences patients' career, family, and social life and reduces quality of life to some extent. Previous researches revealed that repetitive hypoxia and reoxygenation caused mitochondria and endoplasmic reticulum dysfunction, overactivated NADPH oxidase, xanthine oxidase, and uncoupling nitric oxide synthase, induced an imbalance between prooxidants and antioxidants, and then got rise to a series of oxidative stress (OS) responses, such as protein oxidation, lipid peroxidation, and DNA oxidation along with inflammatory reaction. OS in brain could trigger neuron injury especially in the hippocampus and cerebral cortex regions. Those two regions are fairly susceptible to hypoxia and oxidative stress production which could consequently result in cognitive dysfunction. Apart from continuous positive airway pressure (CPAP), antioxidant may be a promising therapeutic method to improve partially reversible neurocognitive function. Understanding the role that OS played in the cognitive deficits is crucial for future research and therapeutic strategy development. In this paper, recent important literature concerning the relationship between oxidative stress and cognitive impairment in OSAS will be summarized and the results can provide a rewarding overview for future breakthrough in this field.
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116
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Lee HT, Wu TH, Lin CS, Lee CS, Wei YH, Tsai CY, Chang DM. The pathogenesis of systemic lupus erythematosus - From the viewpoint of oxidative stress and mitochondrial dysfunction. Mitochondrion 2016; 30:1-7. [DOI: 10.1016/j.mito.2016.05.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Revised: 05/18/2016] [Accepted: 05/20/2016] [Indexed: 01/26/2023]
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117
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Targeting the ROS-HIF-1-endothelin axis as a therapeutic approach for the treatment of obstructive sleep apnea-related cardiovascular complications. Pharmacol Ther 2016; 168:1-11. [PMID: 27492897 DOI: 10.1016/j.pharmthera.2016.07.010] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 07/08/2016] [Indexed: 12/12/2022]
Abstract
Obstructive sleep apnea (OSA) is now recognized as an independent and important risk factor for cardiovascular diseases such as hypertension, coronary heart disease, heart failure and stroke. Clinical and experimental data have confirmed that intermittent hypoxia is a major contributor to these deleterious consequences. The repetitive occurrence of hypoxia-reoxygenation sequences generates significant amounts of free radicals, particularly in moderate to severe OSA patients. Moreover, in addition to hypoxia, reactive oxygen species (ROS) are potential inducers of the hypoxia inducible transcription factor-1 (HIF-1) that promotes the transcription of numerous adaptive genes some of which being deleterious for the cardiovascular system, such as the endothelin-1 gene. This review will focus on the involvement of the ROS-HIF-1-endothelin signaling pathway in OSA and intermittent hypoxia and discuss current and potential therapeutic approaches targeting this pathway to treat or prevent cardiovascular disease in moderate to severe OSA patients.
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118
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Katsiki N, Mikhailidis DP, Mantzoros CS. Non-alcoholic fatty liver disease and dyslipidemia: An update. Metabolism 2016; 65:1109-23. [PMID: 27237577 DOI: 10.1016/j.metabol.2016.05.003] [Citation(s) in RCA: 395] [Impact Index Per Article: 49.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 05/02/2016] [Accepted: 05/05/2016] [Indexed: 11/21/2022]
Abstract
Non-alcoholic fatty liver (NAFLD) is the most common liver disease worldwide, progressing from simple steatosis to necroinflammation and fibrosis (leading to non-alcoholic steatohepatitis, NASH), and in some cases to cirrhosis and hepatocellular carcinoma. Inflammation, oxidative stress and insulin resistance are involved in NAFLD development and progression. NAFLD has been associated with several cardiovascular (CV) risk factors including obesity, dyslipidemia, hyperglycemia, hypertension and smoking. NAFLD is also characterized by atherogenic dyslipidemia, postprandial lipemia and high-density lipoprotein (HDL) dysfunction. Most importantly, NAFLD patients have an increased risk for both liver and CV disease (CVD) morbidity and mortality. In this narrative review, the associations between NAFLD, dyslipidemia and vascular disease in NAFLD patients are discussed. NAFLD treatment is also reviewed with a focus on lipid-lowering drugs. Finally, future perspectives in terms of both NAFLD diagnostic biomarkers and therapeutic targets are considered.
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Affiliation(s)
- Niki Katsiki
- Second Propedeutic Department of Internal Medicine, Medical School, Aristotle University of Thessaloniki, Hippocration Hospital, Thessaloniki, Greece
| | - Dimitri P Mikhailidis
- Department of Clinical Biochemistry (Vascular Disease Prevention Clinics), Royal Free Hospital Campus, University College London Medical School, University College London (UCL), London, UK.
| | - Christos S Mantzoros
- Division of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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119
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Serebrovskaya TV, Xi L. Intermittent hypoxia training as non-pharmacologic therapy for cardiovascular diseases: Practical analysis on methods and equipment. Exp Biol Med (Maywood) 2016; 241:1708-23. [PMID: 27407098 DOI: 10.1177/1535370216657614] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The global industrialization has brought profound lifestyle changes and environmental pollutions leading to higher risks of cardiovascular diseases. Such tremendous challenges outweigh the benefits of major advances in pharmacotherapies (such as statins, antihypertensive, antithrombotic drugs) and exacerbate the public healthcare burdens. One of the promising complementary non-pharmacologic therapies is the so-called intermittent hypoxia training (IHT) via activation of the human body's own natural defense through adaptation to intermittent hypoxia. This review article primarily focuses on the practical questions concerning the utilization of IHT as a non-pharmacologic therapy against cardiovascular diseases in humans. Evidence accumulated in the past five decades of research in healthy men and patients has suggested that short-term daily sessions consisting 3-4 bouts of 5-7 min exposures to 12-10% O2 alternating with normoxic durations for 2-3 weeks can result in remarkable beneficial effects in treatment of cardiovascular diseases such as hypertension, coronary heart disease, and heart failure. Special attentions are paid to the therapeutic effects of different IHT models, along with introduction of a variety of specialized facilities and equipment available for IHT, including hypobaric chambers, hypoxia gas mixture deliver equipment (rooms, tents, face masks), and portable rebreathing devices. Further clinical trials and thorough evaluations of the risks versus benefits of IHT are much needed to develop a series of standardized and practical guidelines for IHT. Taken together, we can envisage a bright future for IHT to play a more significant role in the preventive and complementary medicine against cardiovascular diseases.
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Affiliation(s)
- Tatiana V Serebrovskaya
- Department of Hypoxia, Bogomoletz Institute of Physiology, National Academy of Sciences of Ukraine, Kiev 01024, Ukraine
| | - Lei Xi
- Pauley Heart Center, Division of Cardiology, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA 23298-0204, USA Department of Sports Medicine, Chengdu Sport University, Chengdu 610041, China
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120
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Correspondence. Retina 2016; 36:e70-1. [DOI: 10.1097/iae.0000000000001153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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121
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Serebrovska T, Serebrovska Z, Egorov E. Fitness and therapeutic potential of intermittent hypoxia training: a matter of dose. ACTA ACUST UNITED AC 2016; 62:78-91. [DOI: 10.15407/fz62.03.078] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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122
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Kanbay A, Ceylan E, Köseoğlu Hİ, Çalışkan M, Takir M, Tulu S, Telci Çaklılı O, Köstek O, Erek A, Afsar B. Endocan: a novel predictor of endothelial dysfunction in obstructive sleep apnea syndrome. CLINICAL RESPIRATORY JOURNAL 2016; 12:84-90. [DOI: 10.1111/crj.12487] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 03/07/2016] [Accepted: 04/12/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Asiye Kanbay
- Istanbul Medeniyet University Faculty of Medicine, Department of Pulmonary Medicine; Istanbul Turkey
| | - Erkan Ceylan
- Istanbul Medeniyet University Faculty of Medicine, Department of Pulmonary Medicine; Istanbul Turkey
| | - Handan İnönü Köseoğlu
- Gaziosman Paşa University Faculty of Medicine, Department of Pulmonary Medicine; Tokat Turkey
| | - Mustafa Çalışkan
- Istanbul Medeniyet University Faculty of Medicine, Department of Cardiology; Istanbul Turkey
| | - Mumtaz Takir
- Istanbul Medeniyet University Faculty of Medicine, Department of Internal Medicine, Division of Endocrinology; Istanbul Turkey
| | - Selcan Tulu
- Istanbul Medeniyet University Faculty of Medicine, Department of Internal Medicine; Istanbul Turkey
| | - Ozge Telci Çaklılı
- Istanbul Medeniyet University Faculty of Medicine, Department of Internal Medicine; Istanbul Turkey
| | - Osman Köstek
- Istanbul Medeniyet University Faculty of Medicine, Department of Internal Medicine; Istanbul Turkey
| | - Aybala Erek
- Istanbul Medeniyet University Faculty of Medicine, Department of Biochemistry; Istanbul Turkey
| | - Baris Afsar
- Konya Numune State Hospital, Department of Medicine, Division of Nephrology; Konya Turkey
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123
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Roles and Mechanisms of Obstructive Sleep Apnea-Hypopnea Syndrome and Chronic Intermittent Hypoxia in Atherosclerosis: Evidence and Prospective. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:8215082. [PMID: 27293515 PMCID: PMC4884866 DOI: 10.1155/2016/8215082] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 04/01/2016] [Accepted: 04/20/2016] [Indexed: 12/13/2022]
Abstract
The morbidity and mortality of obstructive sleep apnea-hypopnea syndrome (OSAHS) are regarded as consequences of its adverse effects on the cardiovascular system. Chronic intermittent hypoxia (CIH) induced by OSAHS can result in vascular endothelial injury, thus promoting development of atherosclerosis (AS). Studies have shown that CIH is an independent risk factor for the occurrence and development of AS, but the underlying mechanism remains unclear. Here, we review clinical and fundamental studies reported during the last 10 years on the occurrence and development of AS mediated by CIH, focusing on inflammation, oxidative stress, insulin resistance, cell apoptosis, vascular endothelial injury, platelet activation, and neuroendocrine disorders. This review will offer current evidence and perspective to researchers for the development of effective intervention strategies for OSAHS-related cardiocerebrovascular diseases.
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124
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Keenan TDL, Goldacre R, Goldacre MJ. Associations between obstructive sleep apnoea, primary open angle glaucoma and age-related macular degeneration: record linkage study. Br J Ophthalmol 2016; 101:155-159. [PMID: 27044342 DOI: 10.1136/bjophthalmol-2015-308278] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 02/25/2016] [Accepted: 03/15/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND Primary open angle glaucoma (POAG) is thought to be associated with obstructive sleep apnoea (OSA) but previous studies are conflicting and have methodological limitations. This potential relationship has implications for investigation and treatment strategies, and may provide insights into disease pathogenesis. The relationship between OSA and age-related macular degeneration (AMD) is unknown. METHODS A sleep apnoea cohort of 67 786 people was constructed from linked English hospital episode statistics (1999-2011). We compared this cohort with a reference cohort (2 684 131 people) for rates of subsequent POAG and AMD. A POAG cohort (comprising 87 435 people) and an AMD cohort (248 408 people) were also constructed and compared with the reference cohort for rates of subsequent sleep apnoea. All analyses were restricted to people aged 55 and over and, within this age range, were age standardised using 5-year age groups. RESULTS Risk of POAG following sleep apnoea was not elevated: the rate ratio for POAG was 1.01 (95% CI 0.85 to 1.19). Similarly, the risk of sleep apnoea following POAG was not elevated: the rate ratio was 1.00 (0.86 to 1.17). These findings held true across subgroup analysis according to sex and age group. By contrast, the risk of AMD following sleep apnoea was significantly elevated, with rate ratio 1.44 (1.32 to 1.57). CONCLUSIONS Although plausible mechanisms exist to consider a link between OSA and POAG, the two conditions are not positively associated. This holds true in either temporal direction. By contrast, OSA is positively associated with AMD. While potential confounding factors may contribute, obesity does not appear sufficient to explain this association.
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Affiliation(s)
- Tiarnan D L Keenan
- University of Manchester, Manchester, UK.,Royal Bolton Hospital, Bolton, UK
| | - Raph Goldacre
- Unit of Health-Care Epidemiology, Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Michael J Goldacre
- Unit of Health-Care Epidemiology, Nuffield Department of Population Health, University of Oxford, Oxford, UK
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125
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Abstract
IN BRIEF Obstructive sleep apnea (OSA) alters glucose metabolism, promotes insulin resistance, and is associated with development of type 2 diabetes. Obesity is a key moderator of the effect of OSA on type 2 diabetes. However, chronic exposure to intermittent hypoxia and other pathophysiological effects of OSA affect glucose metabolism directly, and treatment of OSA can improve glucose homeostasis.
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Affiliation(s)
- Jimmy Doumit
- Jesse Brown VA Medical Center and University of Illinois at Chicago, Chicago, IL
| | - Bharati Prasad
- Jesse Brown VA Medical Center and University of Illinois at Chicago, Chicago, IL
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