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Bose K, Agrawal R, Sairam T, Mil J, Butler MP, Dhandapany PS. Sleep fragmentation induces heart failure in a hypertrophic cardiomyopathy mouse model by altering redox metabolism. iScience 2024; 27:109075. [PMID: 38361607 PMCID: PMC10867644 DOI: 10.1016/j.isci.2024.109075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 12/11/2023] [Accepted: 01/26/2024] [Indexed: 02/17/2024] Open
Abstract
Sleep fragmentation (SF) disrupts normal biological rhythms and has major impacts on cardiovascular health; however, it has never been shown to be a risk factor involved in the transition from cardiac hypertrophy to heart failure (HF). We now demonstrate devastating effects of SF on hypertrophic cardiomyopathy (HCM). We generated a transgenic mouse model harboring a patient-specific myosin binding protein C3 (MYBPC3) variant displaying HCM, and measured the progression of pathophysiology in the presence and absence of SF. SF induces mitochondrial damage, sarcomere disarray, and apoptosis in HCM mice; these changes result in a transition of hypertrophy to an HF phenotype by chiefly targeting redox metabolic pathways. Our findings for the first time show that SF is a risk factor for HF transition and have important implications in clinical settings where HCM patients with sleep disorders have worse prognosis, and strategic intervention with regularized sleep patterns might help such patients.
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Affiliation(s)
- Karthikeyan Bose
- The Knight Cardiovascular Institute and Departments of Medicine, Molecular, and Medical Genetics, Oregon Health and Science University, Portland, OR 97239, USA
| | - Radhika Agrawal
- Cardiovascular Development and Disease Mechanisms, Institute for Stem Cell Science and Regenerative Medicine, Bangalore (DBT-inStem), Bangalore, India
| | - Thiagarajan Sairam
- Cardiovascular Development and Disease Mechanisms, Institute for Stem Cell Science and Regenerative Medicine, Bangalore (DBT-inStem), Bangalore, India
| | - Jessenya Mil
- The Knight Cardiovascular Institute and Departments of Medicine, Molecular, and Medical Genetics, Oregon Health and Science University, Portland, OR 97239, USA
| | - Matthew P. Butler
- Oregon Institute of Occupational Health Sciences, and Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, OR 97239, USA
| | - Perundurai S. Dhandapany
- The Knight Cardiovascular Institute and Departments of Medicine, Molecular, and Medical Genetics, Oregon Health and Science University, Portland, OR 97239, USA
- Cardiovascular Development and Disease Mechanisms, Institute for Stem Cell Science and Regenerative Medicine, Bangalore (DBT-inStem), Bangalore, India
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2
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Li Q, Jiang X, Zhou Y, Gu Y, Ding Y, Luo J, Pang N, Sun Y, Pei L, Pan J, Gao M, Ma S, Xiao Y, Hu D, Wu F, Yang L. Improving Mitochondrial Function in Skeletal Muscle Contributes to the Amelioration of Insulin Resistance by Nicotinamide Riboside. Int J Mol Sci 2023; 24:10015. [PMID: 37373163 DOI: 10.3390/ijms241210015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/01/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
High-fat diet (HFD)-induced insulin resistance (IR) in skeletal muscle is often accompanied by mitochondrial dysfunction and oxidative stress. Boosting nicotinamide adenine dinucleotide (NAD) using nicotinamide riboside (NR) can effectively decrease oxidative stress and increase mitochondrial function. However, whether NR can ameliorate IR in skeletal muscle is still inconclusive. We fed male C57BL/6J mice with an HFD (60% fat) ± 400 mg/kg·bw NR for 24 weeks. C2C12 myotube cells were treated with 0.25 mM palmitic acid (PA) ± 0.5 mM NR for 24 h. Indicators for IR and mitochondrial dysfunction were analyzed. NR treatment alleviated IR in HFD-fed mice with regard to improved glucose tolerance and a remarkable decrease in the levels of fasting blood glucose, fasting insulin and HOMA-IR index. NR-treated HFD-fed mice also showed improved metabolic status regarding a significant reduction in body weight and lipid contents in serum and the liver. NR activated AMPK in the skeletal muscle of HFD-fed mice and PA-treated C2C12 myotube cells and upregulated the expression of mitochondria-related transcriptional factors and coactivators, thereby improving mitochondrial function and alleviating oxidative stress. Upon inhibiting AMPK using Compound C, NR lost its ability in enhancing mitochondrial function and protection against IR induced by PA. In summary, improving mitochondrial function through the activation of AMPK pathway in skeletal muscle may play an important role in the amelioration of IR using NR.
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Affiliation(s)
- Qiuyan Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Xuye Jiang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
- Foundation Center for Basic Metabolic Research, Section of Metabolic Genetics, Faculty of Health and Medical Sciences, University of Copenhagen, 1172 Copenhagen, Denmark
| | - Yujia Zhou
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Yingying Gu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Yijie Ding
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Jing Luo
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Nengzhi Pang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Yan Sun
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Lei Pei
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Jie Pan
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Mengqi Gao
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Sixi Ma
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Ying Xiao
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - De Hu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Feilong Wu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Lili Yang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
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3
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Cardiovascular Disease in Obstructive Sleep Apnea: Putative Contributions of Mineralocorticoid Receptors. Int J Mol Sci 2023; 24:ijms24032245. [PMID: 36768567 PMCID: PMC9916750 DOI: 10.3390/ijms24032245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/12/2023] [Accepted: 01/20/2023] [Indexed: 01/24/2023] Open
Abstract
Obstructive sleep apnea (OSA) is a chronic and highly prevalent condition that is associated with oxidative stress, inflammation, and fibrosis, leading to endothelial dysfunction, arterial stiffness, and vascular insulin resistance, resulting in increased cardiovascular disease and overall mortality rates. To date, OSA remains vastly underdiagnosed and undertreated, with conventional treatments yielding relatively discouraging results for improving cardiovascular outcomes in OSA patients. As such, a better mechanistic understanding of OSA-associated cardiovascular disease (CVD) and the development of novel adjuvant therapeutic targets are critically needed. It is well-established that inappropriate mineralocorticoid receptor (MR) activation in cardiovascular tissues plays a causal role in a multitude of CVD states. Clinical studies and experimental models of OSA lead to increased secretion of the MR ligand aldosterone and excessive MR activation. Furthermore, MR activation has been associated with worsened OSA prognosis. Despite these documented relationships, there have been no studies exploring the causal involvement of MR signaling in OSA-associated CVD. Further, scarce clinical studies have exclusively assessed the beneficial role of MR antagonists for the treatment of systemic hypertension commonly associated with OSA. Here, we provide a comprehensive overview of overlapping mechanistic pathways recruited in the context of MR activation- and OSA-induced CVD and propose MR-targeted therapy as a potential avenue to abrogate the deleterious cardiovascular consequences of OSA.
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Personalized Medicine and Obstructive Sleep Apnea. J Pers Med 2022; 12:jpm12122034. [PMID: 36556255 PMCID: PMC9781564 DOI: 10.3390/jpm12122034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/27/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022] Open
Abstract
Obstructive sleep apnea (OSA) is a common disease that is often under-diagnosed and under-treated in all ages. This is due to differences in morphology, diversity in clinical phenotypes, and differences in diagnosis and treatment of OSA in children and adults, even among individuals of the same age. Therefore, a personalized medicine approach to diagnosis and treatment of OSA is necessary for physicians in clinical practice. In children and adults without serious underlying medical conditions, polysomnography at sleep labs may be an inappropriate and inconvenient testing modality compared to home sleep apnea testing. In addition, the apnea-hypopnea index should not be considered as a single parameter for making treatment decisions. Thus, the treatment of OSA should be personalized and based on individual tolerance to sleep-quality-related parameters measured by the microarousal index, harmful effects of OSA on the cardiovascular system related to severe hypoxia, and patients' comorbidities. The current treatment options for OSA include lifestyle modification, continuous positive airway pressure (CPAP) therapy, oral appliance, surgery, and other alternative treatments. CPAP therapy has been recommended as a cornerstone treatment for moderate-to-severe OSA in adults. However, not all patients can afford or tolerate CPAP therapy. This narrative review seeks to describe the current concepts and relevant approaches towards personalized management of patients with OSA, according to pathophysiology, cluster analysis of clinical characteristics, adequate combined therapy, and the consideration of patients' expectations.
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Zhao X, Zhang W, Xin S, Yu X, Zhang X. Effect of CPAP on blood glucose fluctuation in patients with type 2 diabetes mellitus and obstructive sleep apnea. Sleep Breath 2022; 26:1875-1883. [PMID: 35165839 PMCID: PMC9663373 DOI: 10.1007/s11325-021-02556-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 12/20/2021] [Accepted: 12/23/2021] [Indexed: 12/03/2022]
Abstract
Purpose This study aimed to investigate the effect of continuous positive airway pressure (CPAP) on blood glucose fluctuation in patients with type 2 diabetes mellitus (T2DM) and obstructive sleep apnea (OSA). Methods Patients with T2DM and OSA were divided into an intervention group and a control group. All patients were treatment naïve. The intervention group was given CPAP therapy. The subjects were monitored using a continuous glucose monitoring system (CGMS) for 2 weeks. Results Of 60 patients, 30 were selected to receive CPAP intervention while 30 without CPAP served as controls. The CPAP tolerance of the intervention group was good, with average time on CPAP therapy of 55.2 ± 4.3 days, and average daily time on CPAP therapy of 8.3 ± 2.8 h. The postprandial blood glucose (PBG), fasting blood glucose (FBG), and HbA1c levels in the intervention group decreased significantly (P < 0.05). Significant variations in 24-h mean blood glucose and night-time mean blood glucose were significantly lower with CPAP therapy than without therapy (P < 0.05, respectively). The mean of daily differences and mean ambulatory glucose excursions were both considerably lower with treatment than without (P < 0.05, respectively). There was also a significant difference in time in range and time above range (P < 0.05, respectively). Conclusion CPAP treatment may significantly improve the blood glucose level and blood glucose stability in patients with T2DM and OSA. CPAP is an effective treatment method beyond lifestyle intervention and drug therapy.
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Affiliation(s)
- Xin Zhao
- Department of Endocrinology, Peking University International Hospital, No. 1, Life Garden Road, Zhongguancun Life Science Garden, Changping District, Beijing, 100001, China
| | - Wei Zhang
- Sleep Center Department, Peking University International Hospital, Beijing, 100001, China
| | - Sixu Xin
- Department of Endocrinology, Peking University International Hospital, No. 1, Life Garden Road, Zhongguancun Life Science Garden, Changping District, Beijing, 100001, China
| | - Xiaofeng Yu
- Department of Endocrinology, Peking University International Hospital, No. 1, Life Garden Road, Zhongguancun Life Science Garden, Changping District, Beijing, 100001, China
| | - Xiaomei Zhang
- Department of Endocrinology, Peking University International Hospital, No. 1, Life Garden Road, Zhongguancun Life Science Garden, Changping District, Beijing, 100001, China.
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Lee H, Ha TY, Jung CH, Nirmala FS, Park SY, Huh YH, Ahn J. Mitochondrial dysfunction in skeletal muscle contributes to the development of acute insulin resistance in mice. J Cachexia Sarcopenia Muscle 2021; 12:1925-1939. [PMID: 34605225 PMCID: PMC8718067 DOI: 10.1002/jcsm.12794] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 05/12/2021] [Accepted: 08/23/2021] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Although mounting evidence indicates that insulin resistance (IR) co-occurs with mitochondrial dysfunction in skeletal muscle, there is no clear causal link between mitochondrial dysfunction and IR pathogenesis. In this study, the exact role of mitochondria in IR development was determined. METHODS Six-week-old C57BL/6 mice were fed a high-fat diet for 2 weeks to induce acute IR or for 24 weeks to induce chronic IR (n = 8 per group). To characterize mitochondrial function, we measured citrate synthase activity, ATP content, mitochondrial DNA (mtDNA) content, and oxygen consumption rate in gastrocnemius and liver tissues. We intraperitoneally administered mitochondrial division inhibitor 1 (mdivi-1) to mice with acute IR and measured mitochondrial adaptive responses such as mitophagy, mitochondrial unfolded protein response (UPRmt), and oxidative stress (n = 6 per group). RESULTS Acute IR occurred coincidently with impaired mitochondrial function, including reduced citrate synthase activity (-37.8%, P < 0.01), ATP production (-88.0%, P < 0.01), mtDNA (-53.1%, P < 0.01), and mitochondrial respiration (-52.2% for maximal respiration, P < 0.05) in skeletal muscle but not in liver. Administration of mdivi-1 attenuated IR development by increasing mitochondrial function (+58.5% for mtDNA content, P < 0.01; 4.06 ± 0.69 to 5.84 ± 0.95 pmol/min/mg for citrate synthase activity, P < 0.05; 13.06 ± 0.70 to 34.87 ± 0.70 pmol/min/g for maximal respiration, P < 0.001). Western blot analysis showed acute IR resulted in increased autophagy (mitophagy) and UPRmt induction in muscle tissue. This adaptive response was inhibited by mdivi-1, which reduced the mitochondrial oxidative stress of skeletal muscle during acute IR. CONCLUSIONS Acute IR induced mitochondrial oxidative stress that impaired mitochondrial function in skeletal muscle. Improving mitochondrial function has important potential for treating acute IR.
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Affiliation(s)
- Hyunjung Lee
- Research Group of Natural Material and Metabolism, Korea Food Research Institute, Wanju, Republic of Korea
| | - Tae Youl Ha
- Research Group of Natural Material and Metabolism, Korea Food Research Institute, Wanju, Republic of Korea.,Department of Food Biotechnology, University of Science and Technology, Daejeon, Republic of Korea
| | - Chang Hwa Jung
- Research Group of Natural Material and Metabolism, Korea Food Research Institute, Wanju, Republic of Korea.,Department of Food Biotechnology, University of Science and Technology, Daejeon, Republic of Korea
| | - Farida Sukma Nirmala
- Research Group of Natural Material and Metabolism, Korea Food Research Institute, Wanju, Republic of Korea.,Department of Food Biotechnology, University of Science and Technology, Daejeon, Republic of Korea
| | - So-Young Park
- Department of Physiology, College of Medicine, Yeungnam University, Daegu, Republic of Korea
| | - Yang Hoon Huh
- Center for Electron Microscopy Research, Korea Basic Science Institute, Cheongju, Republic of Korea
| | - Jiyun Ahn
- Research Group of Natural Material and Metabolism, Korea Food Research Institute, Wanju, Republic of Korea.,Department of Food Biotechnology, University of Science and Technology, Daejeon, Republic of Korea
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7
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Maraldi T, Angeloni C, Prata C, Hrelia S. NADPH Oxidases: Redox Regulators of Stem Cell Fate and Function. Antioxidants (Basel) 2021; 10:973. [PMID: 34204425 PMCID: PMC8234808 DOI: 10.3390/antiox10060973] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 06/15/2021] [Accepted: 06/15/2021] [Indexed: 12/12/2022] Open
Abstract
One of the major sources of reactive oxygen species (ROS) generated within stem cells is the nicotinamide adenine dinucleotide phosphate (NADPH) oxidase family of enzymes (NOXs), which are critical determinants of the redox state beside antioxidant defense mechanisms. This balance is involved in another one that regulates stem cell fate: indeed, self-renewal, proliferation, and differentiation are decisive steps for stem cells during embryo development, adult tissue renovation, and cell therapy application. Ex vivo culture-expanded stem cells are being investigated for tissue repair and immune modulation, but events such as aging, senescence, and oxidative stress reduce their ex vivo proliferation, which is crucial for their clinical applications. Here, we review the role of NOX-derived ROS in stem cell biology and functions, focusing on positive and negative effects triggered by the activity of different NOX isoforms. We report recent findings on downstream molecular targets of NOX-ROS signaling that can modulate stem cell homeostasis and lineage commitment and discuss the implications in ex vivo expansion and in vivo engraftment, function, and longevity. This review highlights the role of NOX as a pivotal regulator of several stem cell populations, and we conclude that these aspects have important implications in the clinical utility of stem cells, but further studies on the effects of pharmacological modulation of NOX in human stem cells are imperative.
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Affiliation(s)
- Tullia Maraldi
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Via del Pozzo 71, 41124 Modena, Italy;
| | - Cristina Angeloni
- School of Pharmacy, University of Camerino, Via Gentile III da Varano, 62032 Camerino, Italy;
| | - Cecilia Prata
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum—University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Silvana Hrelia
- Department for Life Quality Studies, Alma Mater Studiorum—University of Bologna, Corso d’Augusto 237, 47921 Rimini, Italy;
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Khalyfa A, Castro-Grattoni AL, Gozal D. Cardiovascular morbidities of obstructive sleep apnea and the role of circulating extracellular vesicles. Ther Adv Respir Dis 2020; 13:1753466619895229. [PMID: 31852426 PMCID: PMC6923690 DOI: 10.1177/1753466619895229] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Obstructive sleep apnea (OSA) is characterized by recurrent upper airway collapse
during sleep resulting in impaired blood gas exchange, namely intermittent
hypoxia (IH) and hypercapnia, fragmented sleep (SF), increased oxidative stress
and systemic inflammation. Among a myriad of potential associated morbidities,
OSA has been particularly implicated as mechanistically contributing to the
prevalence and severity of cardiovascular diseases (CVD). However, the benefits
of continuous positive airway pressure (CPAP), which is generally employed in
OSA treatment, to either prevent or improve CVD outcomes remain unconvincing,
suggesting that the pathophysiological mechanisms underlying the incremental CVD
risk associated with OSA are not clearly understood. One of the challenges in
development of non-invasive diagnostic assays is the ability to identify
clinically and mechanistically relevant biomarkers. Circulating extracellular
vesicles (EVs) and their cargos reflect underlying changes in cellular
homeostasis and can provide insights into how cells and systems cope with
physiological perturbations by virtue of the identity and abundance of miRNAs,
mRNAs, proteins, and lipids that are packaged in the EVs under normal as well as
diseased states, such as OSA. EVs can not only provide unique insights into
coordinated cellular responses at the organ or systemic level, but can also
serve as reporters of the effects of OSA in CVD, either by their properties
enabling regeneration and repair of injured vascular cells or by damaging them.
Here, we highlight recent progress in the pathological CVD consequences of OSA,
and explore the putative roles of EVs in OSA-associated CVD, along with emerging
diagnostic and therapeutic opportunities. The reviews of this paper are available via the supplemental material
section.
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Affiliation(s)
- Abdelnaby Khalyfa
- Department of Child Health and the Child Health Research Institute, University of Missouri School of Medicine, Columbia, MO, USA
| | - Anabel L Castro-Grattoni
- Department of Child Health and the Child Health Research Institute, University of Missouri School of Medicine, Columbia, MO, USA
| | - David Gozal
- Department of Child Health and MU Women's and Children's Hospital, University of Missouri School of Medicine, 400 N. Keene Street, Suite 010, Columbia, MO 65201, USA
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9
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Javaheri S, Gay PC. To Die, to Sleep - to Sleep, Perchance to Dream…Without Hypertension: Dreams of the Visionary Christian Guilleminault Revisited. J Clin Sleep Med 2020; 15:1189-1190. [PMID: 31538586 DOI: 10.5664/jcsm.7952] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
CITATION Javaheri S, Gay PC. To die, to sleep - to sleep, perchance to dream…without hypertension: dreams of the visionary Christian Guilleminault revisited. J Clin Sleep Med. 2019;15(9):1189-1190.
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10
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Golshevsky DM, Magnussen C, Juonala M, Kao KT, Harcourt BE, Sabin MA. Time spent watching television impacts on body mass index in youth with obesity, but only in those with shortest sleep duration. J Paediatr Child Health 2020; 56:721-726. [PMID: 31821651 DOI: 10.1111/jpc.14711] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 05/09/2019] [Accepted: 11/14/2019] [Indexed: 12/16/2022]
Abstract
AIM To determine the interplay between sleep and sedentary behaviours on body mass index (BMI) in children with obesity. METHODS Cross-sectional study of 343 children with obesity aged 4-17 years, from a tertiary care weight management clinic in Melbourne, Victoria, Australia. Multifaceted data relating to activity and sleep from child and parent questionnaires analysed with anthropometric data collected during routine clinical care. Associations between sleep duration and activity measures were examined via regression models with adjustment for potential confounders. RESULTS Higher BMI was associated with more hours spent watching television (P = 0.04), as well as less reported enjoyment of physical activity (P = 0.005) and less time spent in organised sport activity (P = 0.005). Higher BMI was also associated with higher levels of obstructive sleep apnoea (P = 0.002). Less time in bed was associated with higher levels of BMI (P = 0.03) but analysis by sex revealed this association to only hold for males. In the whole group, a significant television and sleep interaction was seen, such that increasing television watching was associated with higher BMI, but only in those with shortest sleep duration. CONCLUSIONS Both poor sleep and increasing screen time (including television viewing, smart-phone use, internet use or video-gaming) appear to impact BMI in children with obesity, with a particular detrimental effect of television viewing in those who sleep less. Efforts to improve sleep time and quality in children may minimise negative effects of screen time on increasing BMI and should be included in public health strategies to combat obesity in childhood.
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Affiliation(s)
- Daniel M Golshevsky
- Department of General Medicine, Royal Children's Hospital, Melbourne, Victoria, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
| | - Costan Magnussen
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia.,Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland
| | - Markus Juonala
- Centre for Hormone Research, Murdoch Children's Research Institute, Melbourne, Victoria, Australia.,Department of Medicine, University of Turku, Turku, Finland.,Division of Medicine, Turku University Central Hospital, Turku, Finland
| | - Kung-Ting Kao
- Department of General Medicine, Royal Children's Hospital, Melbourne, Victoria, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia.,Centre for Hormone Research, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
| | - Brooke E Harcourt
- Department of General Medicine, Royal Children's Hospital, Melbourne, Victoria, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia.,Centre for Hormone Research, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
| | - Matthew A Sabin
- Department of General Medicine, Royal Children's Hospital, Melbourne, Victoria, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia.,Centre for Hormone Research, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
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11
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Khalyfa A, Kheirandish-Gozal L, Gozal D. Exosome and Macrophage Crosstalk in Sleep-Disordered Breathing-Induced Metabolic Dysfunction. Int J Mol Sci 2018; 19:ijms19113383. [PMID: 30380647 PMCID: PMC6274857 DOI: 10.3390/ijms19113383] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 10/22/2018] [Accepted: 10/25/2018] [Indexed: 12/12/2022] Open
Abstract
Obstructive sleep apnea (OSA) is a highly prevalent worldwide public health problem that is characterized by repetitive upper airway collapse leading to intermittent hypoxia, pronounced negative intrathoracic pressures, and recurrent arousals resulting in sleep fragmentation. Obesity is a major risk factor of OSA and both of these two closely intertwined conditions result in increased sympathetic activity, oxidative stress, and chronic low-grade inflammation, which ultimately contribute, among other morbidities, to metabolic dysfunction, as reflected by visceral white adipose tissue (VWAT) insulin resistance (IR). Circulating extracellular vesicles (EVs), including exosomes, are released by most cell types and their cargos vary greatly and reflect underlying changes in cellular homeostasis. Thus, exosomes can provide insights into how cells and systems cope with physiological perturbations by virtue of the identity and abundance of miRNAs, mRNAs, proteins, and lipids that are packaged in the EVs cargo, and are secreted from the cells into bodily fluids under normal as well as diseased states. Accordingly, exosomes represent a novel pathway via which a cohort of biomolecules can travel long distances and result in the modulation of gene expression in selected and targeted recipient cells. For example, exosomes secreted from macrophages play a critical role in innate immunity and also initiate the adaptive immune response within specific metabolic tissues such as VWAT. Under normal conditions, phagocyte-derived exosomes represent a large portion of circulating EVs in blood, and carry a protective signature against IR that is altered when secreting cells are exposed to altered physiological conditions such as those elicited by OSA, leading to emergence of IR within VWAT compartment. Consequently, increased understanding of exosome biogenesis and biology should lead to development of new diagnostic biomarker assays and personalized therapeutic approaches. Here, the evidence on the major biological functions of macrophages and exosomes as pathophysiological effectors of OSA-induced metabolic dysfunction is discussed.
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Affiliation(s)
- Abdelnaby Khalyfa
- Sections of Pediatric Sleep Medicine and Pediatric Pulmonology, Department of Pediatrics, Biological Sciences Division, The University of Chicago, Chicago, IL 60637, USA.
| | - Leila Kheirandish-Gozal
- Department of Child Health and the Child Health Research Institute, University of Missouri School of Medicine, Columbia, MO 65201, USA.
| | - David Gozal
- Department of Child Health and the Child Health Research Institute, University of Missouri School of Medicine, Columbia, MO 65201, USA.
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12
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Trzepizur W, Cortese R, Gozal D. Murine models of sleep apnea: functional implications of altered macrophage polarity and epigenetic modifications in adipose and vascular tissues. Metabolism 2018; 84:44-55. [PMID: 29154950 PMCID: PMC5955762 DOI: 10.1016/j.metabol.2017.11.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 11/08/2017] [Accepted: 11/10/2017] [Indexed: 02/07/2023]
Abstract
Obstructive sleep apnea (OSA) is a highly prevalent disease across the lifespan, is characterized by chronic intermittent hypoxia and sleep fragmentation, and has been independently associated with substantial cardiometabolic morbidity. However, the reversibility of end-organ morbidity with treatment is not always apparent, suggesting that both tissue remodeling and epigenetic mechanisms may be operationally involved. Here, we review the cumulative evidence focused around murine models of OSA to illustrate the temporal dependencies of cardiometabolic dysfunction and its reversibility, and more particularly to discuss the critical contributions of tissue macrophages to adipose tissue insulin resistance and vascular atherogenesis. In addition, we describe initial findings potentially implicating epigenetic alterations in both the emergence of the cardiometabolic morbidity of OSA, and in its reversibility with treatment. We anticipate that improved understanding of macrophage biology and epigenetics in the context of intermittent hypoxia and sleep fragmentation will lead to discovery of novel therapeutic targets and improved cardiovascular and metabolic outcomes in OSA.
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Affiliation(s)
- Wojciech Trzepizur
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL, United States; Département de Pneumologie, Centre de Recherche Clinique, CHU d'Angers, Université Bretagne Loire, UNIV Angers, INSERM UMR 1063, Angers, France
| | - Rene Cortese
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL, United States
| | - David Gozal
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL, United States.
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13
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Sleep-disordered breathing, circulating exosomes, and insulin sensitivity in adipocytes. Int J Obes (Lond) 2018; 42:1127-1139. [PMID: 29892042 PMCID: PMC6195831 DOI: 10.1038/s41366-018-0099-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 02/20/2018] [Accepted: 03/12/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND Sleep-disordered-breathing (SDB), which is characterized by chronic intermittent hypoxia (IH) and sleep fragmentation (SF), is a prevalent condition that promotes metabolic dysfunction, particularly among patients suffering from obstructive hypoventilation syndrome (OHS). Exosomes are generated ubiquitously, are readily present in the circulation, and their cargo may exert substantial functional cellular alterations in both physiological and pathological conditions. However, the effects of plasma exosomes on adipocyte metabolism in patients with OHS or in mice subjected to IH or SF mimicking SDB are unclear. METHODS Exosomes from fasting morning plasma samples from obese adults with polysomnographically-confirmed OSA before and after 3 months of adherent CPAP therapy were assayed. In addition, C57BL/6 mice were randomly assigned to (1) sleep control (SC), (2) sleep fragmentation (SF), and (3) intermittent hypoxia (HI) for 6 weeks, and plasma exosomes were isolated. Equivalent exosome amounts were added to differentiated adipocytes in culture, after which insulin sensitivity was assessed using 0 nM and 5 nM insulin-induced pAKT/AKT expression changes by western blotting. RESULTS When plasma exosomes were co-cultured and internalized by human naive adipocytes, significant reductions emerged in Akt phosphorylation responses to insulin when compared to exosomes obtained after 24 months of adherent CPAP treatment (n = 24; p < 0.001), while no such changes occur in untreated patients (n = 8). In addition, OHS exosomes induced significant increases in adipocyte lipolysis that were attenuated after CPAP, but did not alter pre-adipocyte differentiation. Similarly, exosomes from SF- and IH-exposed mice induced attenuated p-AKT/total AKT responses to exogenous insulin and increased glycerol content in naive murine adipocytes, without altering pre-adipocyte differentiation. CONCLUSIONS Using in vitro adipocyte-based functional reporter assays, alterations in plasma exosomal cargo occur in SDB, and appear to contribute to adipocyte metabolic dysfunction. Further exploration of exosomal miRNA signatures in either human subjects or animal models and their putative organ and cell targets appears warranted.
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Tong H, Zhang X, Meng X, Lu L, Mai D, Qu S. Simvastatin Inhibits Activation of NADPH Oxidase/p38 MAPK Pathway and Enhances Expression of Antioxidant Protein in Parkinson Disease Models. Front Mol Neurosci 2018; 11:165. [PMID: 29872377 PMCID: PMC5972184 DOI: 10.3389/fnmol.2018.00165] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 05/01/2018] [Indexed: 11/13/2022] Open
Abstract
Evidence suggests that oxidative stress is involved in the pathogenesis of Parkinson disease (PD). Simvastatin has been suggested to protect against oxidative stress in several diseases. However, the molecular mechanisms by which simvastatin protects against neuropathology and oxidative damage in PD are poorly elucidated. In this study, we aimed to investigate the potential neuroprotective effects of simvastatin owing to its anti-oxidative properties in 6-hydroxydopamine (6-OHDA)-treated SH-SY5Y cells and mice. The results of 2′,7′-dichlorodihydrofluorescein diacetate (DCFH-DA) fluorescence and CCK-8 assay demonstrated that simvastatin reduced intracellular reactive oxygen species (ROS) levels and reversed apoptosis in 6-OHDA-treated SH-SY5Y cells. Mechanistic studies revealed that 6-OHDA-induced activation of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase/p38 mitogen-activated protein kinase (MAPK) pathway was inhibited and nuclear factor-κB (NF-κB) nuclear transcription decreased in SH-SY5Y cells after simvastatin treatment. Enhanced expression levels of superoxide dismutase (SOD), heme oxygenase-1 (HO-1), peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α) and glutamate-cysteine ligase modifier subunit (GCLM) were observed after simvastatin treatment in 6-OHDA-treated SH-SY5Y cells. In vivo studies revealed that administration of simvastatin by gavage decreased limb-use asymmetry and apomorphine-induced rotations in 6-OHDA-lesioned mice. Simvastatin increased dopaminergic neurons and reduced protein tyrosine nitration and gliosis in the midbrain of PD mice. An inhibitory effect on activation of the NADPH oxidase/p38 MAPK was observed, and increased antioxidant protein expression in the midbrain were seen in the simvastatin plus 6-OHDA group compared with the 6-OHDA-lesioned group. Taken together, these results demonstrate that simvastatin might inhibit the activation of NADPH oxidase/p38 MAPK pathway, enhance antioxidant protein expression and protect against oxidative stress, thereby providing a novel antioxidant mechanism that has therapeutic validity.
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Affiliation(s)
- Huichun Tong
- Clinical Medicine Research Center, Shunde Hospital, Southern Medical University, Foshan, China
| | - Xiuping Zhang
- Teaching Center of Experimental Medicine, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Xingjun Meng
- Clinical Medicine Research Center, Shunde Hospital, Southern Medical University, Foshan, China
| | - Lingli Lu
- Clinical Medicine Research Center, Shunde Hospital, Southern Medical University, Foshan, China
| | - Dongmei Mai
- Clinical Medicine Research Center, Shunde Hospital, Southern Medical University, Foshan, China
| | - Shaogang Qu
- Clinical Medicine Research Center, Shunde Hospital, Southern Medical University, Foshan, China
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Gozal D, Khalyfa A, Qiao Z, Akbarpour M, Maccari R, Ottanà R. Protein-Tyrosine Phosphatase-1B Mediates Sleep Fragmentation-Induced Insulin Resistance and Visceral Adipose Tissue Inflammation in Mice. Sleep 2018. [PMID: 28651353 DOI: 10.1093/sleep/zsx111] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Study Objectives Sleep fragmentation (SF) is highly prevalent and has emerged as an important contributing factor to obesity and metabolic syndrome. We hypothesized that SF-induced increases in protein tyrosine phosphatase-1B (PTP-1B) expression and activity underlie increased food intake, inflammation, and leptin and insulin resistance. Methods Wild-type (WT) and ObR-PTP-1b-/- mice (Tg) were exposed to SF and control sleep (SC), and food intake was monitored. WT mice received a PTP-1B inhibitor (RO-7d; Tx) or vehicle (Veh). Upon completion of exposures, systemic insulin and leptin sensitivity tests were performed as well as assessment of visceral white adipose tissue (vWAT) insulin receptor sensitivity and macrophages (ATM) polarity. Results SF increased food intake in either untreated or Veh-treated WT mice. Leptin-induced hypothalamic STAT3 phosphorylation was decreased, PTP-1B activity was increased, and reduced insulin sensitivity emerged both systemic and in vWAT, with the latter displaying proinflammatory ATM polarity changes. All of the SF-induced effects were abrogated following PTP-1B inhibitor treatment and in Tg mice. Conclusions SF induces increased food intake, reduced leptin signaling in hypothalamus, systemic insulin resistance, and reduced vWAT insulin sensitivity and inflammation that are mediated by increased PTP-1B activity. Thus, PTP-1B may represent a viable therapeutic target in the context of SF-induced weight gain and metabolic dysfunction.
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Affiliation(s)
- David Gozal
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Comer Children's Hospital, Biological Sciences Division, The University of Chicago, Chicago, IL
| | - Abdelnaby Khalyfa
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Comer Children's Hospital, Biological Sciences Division, The University of Chicago, Chicago, IL
| | - Zhuanghong Qiao
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Comer Children's Hospital, Biological Sciences Division, The University of Chicago, Chicago, IL
| | - Mahzad Akbarpour
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Comer Children's Hospital, Biological Sciences Division, The University of Chicago, Chicago, IL
| | - Rosanna Maccari
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, PoloAnnunziata, V.le SS. Annunziata, Messina, Italy
| | - Rosaria Ottanà
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, PoloAnnunziata, V.le SS. Annunziata, Messina, Italy
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Sleep Apnea Morbidity: A Consequence of Microbial-Immune Cross-Talk? Chest 2018; 154:754-759. [PMID: 29548630 DOI: 10.1016/j.chest.2018.03.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 02/23/2018] [Accepted: 03/01/2018] [Indexed: 12/24/2022] Open
Abstract
OSA has emerged as a highly prevalent public health problem that imposes important mid- and long-term consequences, namely cardiovascular, metabolic, cognitive, and cancer-related alterations. OSA is characterized by increased upper airway resistance, alveolar hypoventilation, and recurrent upper airway obstruction during sleep. Recurrent collapse of the upper airway develops with sleep onset and is associated with both intermittent hypoxemia and sleep fragmentation. The microbiome is a vast and complex polymicrobial ecosystem that coexists with the human organism, and it has been identified as playing significant roles in the development of host immunologic phenotypes. In humans and animal models, changes in gut microbial communities occur with lifestyle behaviors, such as smoking, long-distance travel, dietary preferences, physical exercise, and circadian rhythm disturbances. In parallel, diseases previously attributed in part to lifestyle such as obesity, coronary heart disease, depression, and asthma (also associated with OSA) are now claimed as microbiota related. We therefore posit that altered patterns of sleep and oxygenation, as seen in OSA, will promote specific alterations in gut microbiota that in turn will elicit the immunologic alterations that lead to OSA-induced end-organ morbidities. The present article assesses the potential mechanistic links between OSA-induced changes in gut microbiota and its morbid phenotypes.
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Khalyfa A, Almendros I, Gileles-Hillel A, Akbarpour M, Trzepizur W, Mokhlesi B, Huang L, Andrade J, Farré R, Gozal D. Circulating exosomes potentiate tumor malignant properties in a mouse model of chronic sleep fragmentation. Oncotarget 2018; 7:54676-54690. [PMID: 27419627 PMCID: PMC5342372 DOI: 10.18632/oncotarget.10578] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Accepted: 06/30/2016] [Indexed: 12/20/2022] Open
Abstract
Background Chronic sleep fragmentation (SF) increases cancer aggressiveness in mice. Exosomes exhibit pleiotropic biological functions, including immune regulatory functions, antigen presentation, intracellular communication and inter-cellular transfer of RNA and proteins. We hypothesized that SF-induced alterations in biosynthesis and cargo of plasma exosomes may affect tumor cell properties. Results SF-derived exosomes increased tumor cell proliferation (~13%), migration (~2.3-fold) and extravasation (~10%) when compared to exosomes from SC-exposed mice. Similarly, Pre exosomes from OSA patients significantly enhanced proliferation and migration of human adenocarcinoma cells compared to Post. SF-exosomal cargo revealed 3 discrete differentially expressed miRNAs, and exploration of potential mRNA targets in TC1 tumor cells uncovered 132 differentially expressed genes that encode for multiple cancer-related pathways. Methods Plasma-derived exosomes from C57/B6 mice exposed to 6 wks of SF or sleep control (SC), and from adult human patients with obstructive sleep apnea (OSA) before (Pre) and after adherent treatment for 6 wks (Post) were co-cultured with mouse lung TC1 or human adenocarcinoma tumor cell lines, respectively. Proliferation, migration, invasion, endothelial barrier integrity and extravasation assays of tumor cells were performed. Plasma mouse exosomal miRNAs were profiled with arrays, and transcriptomic assessments of TC1 cells exposed to SF or SC exosomes were conducted to identify gene targets. Conclusions Chronic SF induces alterations in exosomal miRNA cargo that alter the biological properties of TC1 lung tumor cells to enhance their proliferative, migratory and extravasation properties, and similar findings occur in OSA patients, in whom SF is a constitutive component of their sleep disorder. Thus, exosomes could participate, at least in part, in the adverse cancer outcomes observed in OSA.
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Affiliation(s)
- Abdelnaby Khalyfa
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL, USA
| | - Isaac Almendros
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL, USA.,Unitat de Biofísica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona-Institut Investigacions Biomediques August Pi Sunyer-CIBER Enfermedades Respiratorias, Barcelona, Spain
| | - Alex Gileles-Hillel
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL, USA
| | - Mahzad Akbarpour
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL, USA
| | - Wojciech Trzepizur
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL, USA
| | - Babak Mokhlesi
- Department of Medicine, Section of Pulmonary and Critical Care, Sleep Disorders Center, The University of Chicago, Chicago, IL, USA
| | - Lei Huang
- Center for Research Informatics, The University of Chicago, Chicago, IL, USA
| | - Jorge Andrade
- Center for Research Informatics, The University of Chicago, Chicago, IL, USA
| | - Ramon Farré
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona-Institut Investigacions Biomediques August Pi Sunyer-CIBER Enfermedades Respiratorias, Barcelona, Spain
| | - David Gozal
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL, USA
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Archontogeorgis K, Papanas N, Nena E, Tzouvelekis A, Tsigalou C, Voulgaris A, Xanthoudaki M, Mouemin T, Froudarakis M, Steiropoulos P. Insulin Sensitivity and Insulin Resistance in Non-Diabetic Middle-Aged Patients with Obstructive Sleep Apnoea Syndrome. Open Cardiovasc Med J 2017; 11:159-168. [PMID: 29399212 PMCID: PMC5761020 DOI: 10.2174/1874192401711010159] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 12/18/2017] [Accepted: 12/26/2017] [Indexed: 01/03/2023] Open
Abstract
Background: Obstructive sleep apnoea syndrome (OSAS) has been linked with abnormal glucose metabolism, insulin resistance (IR) and development of diabetes mellitus. Methods: Non-diabetic patients (n=69) with OSAS, diagnosed by polysomnography, were prospectively recruited. To evaluate IR among OSAS patients, the Homeostasis Model Assessment of Insulin Resistance (HOMA-IR) and Insulin sensitivity by Quantitative Insulin sensitivity Check Index (QUICKI) were used. Results: HOMA-IR was positively associated with body-mass index (BMI) (ρ=0.364, p=0.002), time with oxyhaemoglobin saturation <90% (ρ=0.291, p=0.015), arousal index (ρ=0.268, p=0.027), Epworth sleepiness scale (ESS) score (ρ=0.293, p=0.019) and negatively with average oxyhaemoglobin saturation (ρ=-0.398, p=0.001) and minimum oxyhaemoglobin saturation (ρ=-0.327, p=0.006). QUICKI was positively associated with forced vital capacity (r=0.301, p=0.014), average oxyhaemoglobin saturation (r=0.443, p<0.001), minimum oxyhaemoglobin saturation (ρ=0.318, p=0.008), and negatively associated with sleep stage transitions (r=-0.266, p=0.032), oxygen desaturation index (r=-0.404, p=0.005), time with oxyhaemoglobin saturation <90% (r=-0.311, p=0.019), arousal index (r=-0.344, p=0.004) and ESS score (r=-0.299, p=0.016). After adjustment for age and BMI, HOMA-IR was associated with sleep stage transitions, time with oxyhaemoglobin saturation <90%, average oxyhaemoglobin saturation, minimum oxyhaemoglobin saturation and arousal index. QUICKI was associated with oxygen desaturation index, sleep stage transitions, ESS score, minimum oxyhaemoglobin saturation and arousal index. Conclusions: An independent association between OSAS and IR in patients without pre-existing diabetes mellitus was observed. Recurrent hypoxia and sleep fragmentation in OSAS are associated with IR in these patients.
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Affiliation(s)
- K Archontogeorgis
- MSc Program in Sleep Medicine, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - N Papanas
- Second Department of Internal Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - E Nena
- Laboratory of Hygiene and Environmental Protection, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - A Tzouvelekis
- Division of Immunology, Biomedical Sciences Research Center "Alexander Fleming", Athens, Greece
| | - C Tsigalou
- Laboratory of Biopathology, University General Hospital of Evros, Alexandroupolis, Greece
| | - A Voulgaris
- Department of Pneumonology, Medical School, Democritus University of Thrace, Alexandroupolis , Greece
| | - M Xanthoudaki
- Department of Pneumonology, Medical School, Democritus University of Thrace, Alexandroupolis , Greece
| | - T Mouemin
- Department of Pneumonology, Medical School, Democritus University of Thrace, Alexandroupolis , Greece
| | - M Froudarakis
- Department of Pneumonology, Medical School, Democritus University of Thrace, Alexandroupolis , Greece
| | - P Steiropoulos
- MSc Program in Sleep Medicine, Medical School, Democritus University of Thrace, Alexandroupolis, Greece.,Department of Pneumonology, Medical School, Democritus University of Thrace, Alexandroupolis , Greece
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Poroyko VA, Carreras A, Khalyfa A, Khalyfa AA, Leone V, Peris E, Almendros I, Gileles-Hillel A, Qiao Z, Hubert N, Farré R, Chang EB, Gozal D. Chronic Sleep Disruption Alters Gut Microbiota, Induces Systemic and Adipose Tissue Inflammation and Insulin Resistance in Mice. Sci Rep 2016; 6:35405. [PMID: 27739530 PMCID: PMC5064361 DOI: 10.1038/srep35405] [Citation(s) in RCA: 282] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 09/28/2016] [Indexed: 02/08/2023] Open
Abstract
Chronic sleep fragmentation (SF) commonly occurs in human populations, and although it does not involve circadian shifts or sleep deprivation, it markedly alters feeding behaviors ultimately promoting obesity and insulin resistance. These symptoms are known to be related to the host gut microbiota. Mice were exposed to SF for 4 weeks and then allowed to recover for 2 weeks. Taxonomic profiles of fecal microbiota were obtained prospectively, and conventionalization experiments were performed in germ-free mice. Adipose tissue insulin sensitivity and inflammation, as well as circulating measures of inflammation, were assayed. Effect of fecal water on colonic epithelial permeability was also examined. Chronic SF-induced increased food intake and reversible gut microbiota changes characterized by the preferential growth of highly fermentative members of Lachnospiraceae and Ruminococcaceae and a decrease of Lactobacillaceae families. These lead to systemic and visceral white adipose tissue inflammation in addition to altered insulin sensitivity in mice, most likely via enhanced colonic epithelium barrier disruption. Conventionalization of germ-free mice with SF-derived microbiota confirmed these findings. Thus, SF-induced metabolic alterations may be mediated, in part, by concurrent changes in gut microbiota, thereby opening the way for gut microbiome-targeted therapeutics aimed at reducing the major end-organ morbidities of chronic SF.
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Affiliation(s)
- Valeriy A Poroyko
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL 60637, USA.,Department of Medical Oncology, City of Hope, Duarte, CA, 91010, USA
| | - Alba Carreras
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL 60637, USA
| | - Abdelnaby Khalyfa
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL 60637, USA
| | - Ahamed A Khalyfa
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL 60637, USA
| | - Vanessa Leone
- Department of Medicine, The University of Chicago, Chicago, IL 60637, USA
| | - Eduard Peris
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL 60637, USA
| | - Isaac Almendros
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL 60637, USA
| | - Alex Gileles-Hillel
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL 60637, USA
| | - Zhuanhong Qiao
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL 60637, USA
| | - Nathaniel Hubert
- Department of Medicine, The University of Chicago, Chicago, IL 60637, USA
| | - Ramon Farré
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias, CIBER, Madrid, Spain.,Institut Investigacions Biomediques August Pi Sunyer, Barcelona, Spain.,Unitat de Biofísica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona-IDIBAPS, Barcelona, Spain
| | - Eugene B Chang
- Department of Medicine, The University of Chicago, Chicago, IL 60637, USA
| | - David Gozal
- Section of Pediatric Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL 60637, USA
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Gileles-Hillel A, Kheirandish-Gozal L, Gozal D. Biological plausibility linking sleep apnoea and metabolic dysfunction. Nat Rev Endocrinol 2016; 12:290-8. [PMID: 26939978 DOI: 10.1038/nrendo.2016.22] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Obstructive sleep apnoea (OSA) is a very common disorder that affects 10-25% of the general population. In the past two decades, OSA has emerged as a cardiometabolic risk factor in both paediatric and adult populations. OSA-induced metabolic perturbations include dyslipidaemia, atherogenesis, liver dysfunction and abnormal glucose metabolism. The mainstay of treatment for OSA is adenotonsillectomy in children and continuous positive airway pressure therapy in adults. Although these therapies are effective at resolving the sleep-disordered breathing component of OSA, they do not always produce beneficial effects on metabolic function. Thus, a deeper understanding of the underlying mechanisms by which OSA influences metabolic dysfunction might yield improved therapeutic approaches and outcomes. In this Review, we summarize the evidence obtained from animal models and studies of patients with OSA of potential mechanistic pathways linking the hallmarks of OSA (intermittent hypoxia and sleep fragmentation) with metabolic dysfunction. Special emphasis is given to adipose tissue dysfunction induced by sleep apnoea, which bears a striking resemblance to adipose dysfunction resulting from obesity. In addition, important gaps in current knowledge and promising lines of future investigation are identified.
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Affiliation(s)
- Alex Gileles-Hillel
- Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Knapp Center for Biomedical Discovery, Room 4100, 900 East 57th Street, Mailbox 4, Chicago, Illinois 60637-1470, USA
| | - Leila Kheirandish-Gozal
- Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Knapp Center for Biomedical Discovery, Room 4100, 900 East 57th Street, Mailbox 4, Chicago, Illinois 60637-1470, USA
| | - David Gozal
- Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Knapp Center for Biomedical Discovery, Room 4100, 900 East 57th Street, Mailbox 4, Chicago, Illinois 60637-1470, USA
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Gozal D, Farré R, Nieto FJ. Obstructive sleep apnea and cancer: Epidemiologic links and theoretical biological constructs. Sleep Med Rev 2015; 27:43-55. [PMID: 26447849 DOI: 10.1016/j.smrv.2015.05.006] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 05/21/2015] [Accepted: 05/25/2015] [Indexed: 12/19/2022]
Abstract
Sleep disorders have emerged as highly prevalent conditions in the last 50-75 y. Along with improved understanding of such disorders, the realization that perturbations in sleep architecture and continuity may initiate, exacerbate or modulate the phenotypic expression of multiple diseases including cancer has gained increased attention. Furthermore, the intermittent hypoxia that is attendant to sleep disordered breathing, has recently been implicated in increased incidence and more adverse prognosis of cancer. The unifying conceptual framework linking these associations proposes that increased sympathetic activity and/or alterations in immune function, particularly affecting innate immune cellular populations, underlie the deleterious effects of sleep disorders on tumor biology. In this review, the epidemiological evidence linking disrupted sleep and intermittent hypoxia to oncological outcomes, and the potential biological underpinnings of such associations as illustrated by experimental murine models will be critically appraised. The overarching conclusion appears supportive in the formulation of an hypothetical framework, in which fragmented sleep and intermittent hypoxia may promote changes in multiple signalosomes and transcription factors that can not only initiate malignant transformation, but will also alter the tumor microenvironment, disrupt immunosurveillance, and thus hasten tumor proliferation and increase local and metastatic invasion. Future bench-based experimental studies as well as carefully conducted and controlled clinical epidemiological studies appear justified for further exploration of these hypotheses.
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Affiliation(s)
- David Gozal
- Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL, USA.
| | - Ramon Farré
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona-IDIBAPS, Barcelona, Spain; CIBER de Enfermedades Respiratorias, Madrid, Spain
| | - F Javier Nieto
- Department of Population Health Sciences, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
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Thimgan MS, Seugnet L, Turk J, Shaw PJ. Identification of genes associated with resilience/vulnerability to sleep deprivation and starvation in Drosophila. Sleep 2015; 38:801-14. [PMID: 25409104 DOI: 10.5665/sleep.4680] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 10/10/2014] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND AND STUDY OBJECTIVES Flies mutant for the canonical clock protein cycle (cyc(01)) exhibit a sleep rebound that is ∼10 times larger than wild-type flies and die after only 10 h of sleep deprivation. Surprisingly, when starved, cyc(01) mutants can remain awake for 28 h without demonstrating negative outcomes. Thus, we hypothesized that identifying transcripts that are differentially regulated between waking induced by sleep deprivation and waking induced by starvation would identify genes that underlie the deleterious effects of sleep deprivation and/or protect flies from the negative consequences of waking. DESIGN We used partial complementary DNA microarrays to identify transcripts that are differentially expressed between cyc(01) mutants that had been sleep deprived or starved for 7 h. We then used genetics to determine whether disrupting genes involved in lipid metabolism would exhibit alterations in their response to sleep deprivation. SETTING Laboratory. PATIENTS OR PARTICIPANTS Drosophila melanogaster. INTERVENTIONS Sleep deprivation and starvation. MEASUREMENTS AND RESULTS We identified 84 genes with transcript levels that were differentially modulated by 7 h of sleep deprivation and starvation in cyc(01) mutants and were confirmed in independent samples using quantitative polymerase chain reaction. Several of these genes were predicted to be lipid metabolism genes, including bubblegum, cueball, and CG4500, which based on our data we have renamed heimdall (hll). Using lipidomics we confirmed that knockdown of hll using RNA interference significantly decreased lipid stores. Importantly, genetically modifying bubblegum, cueball, or hll resulted in sleep rebound alterations following sleep deprivation compared to genetic background controls. CONCLUSIONS We have identified a set of genes that may confer resilience/vulnerability to sleep deprivation and demonstrate that genes involved in lipid metabolism modulate sleep homeostasis.
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Affiliation(s)
- Matthew S Thimgan
- Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, MO.,Missouri University of Science and Technology, Department of Biological Sciences, Rolla, MO
| | - Laurent Seugnet
- Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, MO.,Centre de Recherche en Neurosciences de Lyon, Integrated Physiology of Arousal Systems Team, Lyon, France
| | - John Turk
- Division of Endocrinology, Diabetes, and Lipid Research, Department of Medicine, Washington University School of Medicine, St. Louis, MO
| | - Paul J Shaw
- Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, MO
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24
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Briançon-Marjollet A, Weiszenstein M, Henri M, Thomas A, Godin-Ribuot D, Polak J. The impact of sleep disorders on glucose metabolism: endocrine and molecular mechanisms. Diabetol Metab Syndr 2015. [PMID: 25834642 DOI: 10.1186/s13098- 015-0018-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Modern lifestyle has profoundly modified human sleep habits. Sleep duration has shortened over recent decades from 8 to 6.5 hours resulting in chronic sleep deprivation. Additionally, irregular sleep, shift work and travelling across time zones lead to disruption of circadian rhythms and asynchrony between the master hypothalamic clock and pacemakers in peripheral tissues. Furthermore, obstructive sleep apnea syndrome (OSA), which affects 4 - 15% of the population, is not only characterized by impaired sleep architecture but also by repetitive hemoglobin desaturations during sleep. Epidemiological studies have identified impaired sleep as an independent risk factor for all cause of-, as well as for cardiovascular, mortality/morbidity. More recently, sleep abnormalities were causally linked to impairments in glucose homeostasis, metabolic syndrome and Type 2 Diabetes Mellitus (T2DM). This review summarized current knowledge on the metabolic alterations associated with the most prevalent sleep disturbances, i.e. short sleep duration, shift work and OSA. We have focused on various endocrine and molecular mechanisms underlying the associations between inadequate sleep quality, quantity and timing with impaired glucose tolerance, insulin resistance and pancreatic β-cell dysfunction. Of these mechanisms, the role of the hypothalamic-pituitary-adrenal axis, circadian pacemakers in peripheral tissues, adipose tissue metabolism, sympathetic nervous system activation, oxidative stress and whole-body inflammation are discussed. Additionally, the impact of intermittent hypoxia and sleep fragmentation (key components of OSA) on intracellular signaling and metabolism in muscle, liver, fat and pancreas are also examined. In summary, this review provides endocrine and molecular explanations for the associations between common sleep disturbances and the pathogenesis of T2DM.
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Affiliation(s)
- Anne Briançon-Marjollet
- Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France.,INSERM U1042, F-38041 Grenoble, Cedex France
| | - Martin Weiszenstein
- Centre for Research on Diabetes, Metabolism and Nutrition, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Marion Henri
- Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France.,INSERM U1042, F-38041 Grenoble, Cedex France
| | - Amandine Thomas
- Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France.,INSERM U1042, F-38041 Grenoble, Cedex France
| | - Diane Godin-Ribuot
- Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France.,INSERM U1042, F-38041 Grenoble, Cedex France
| | - Jan Polak
- Centre for Research on Diabetes, Metabolism and Nutrition, Third Faculty of Medicine, Charles University, Prague, Czech Republic.,2nd Internal Medicine Department, University Hospital Kralovske Vinohrady, Prague, Czech Republic.,Sports Medicine Department, Third Faculty of Medicine, Charles University in Prague, Ruska 87, Praha 10, 100 00 Czech Republic
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25
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Martínez-García MÁ, Campos-Rodríguez F, Almendros I, Farré R. Relationship Between Sleep Apnea and Cancer. Arch Bronconeumol 2015; 51:456-61. [PMID: 25843225 DOI: 10.1016/j.arbres.2015.02.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 02/09/2015] [Accepted: 02/10/2015] [Indexed: 12/15/2022]
Abstract
In the light of relationships reported between hypoxemia (tissue hypoxia) and cancer, Abrams et al. concluded in 2008 that sleep apnea-hypopnea syndrome (SAHS) and its main consequence, intermittent hypoxia, could be related with increased susceptibility to cancer or poorer prognosis of a pre-existing tumor. This pathophysiological association was confirmed in animal studies. Two large independent historical cohort studies subsequently found that the degree of nocturnal hypoxia in patients with SAHS was associated with higher cancer incidence and mortality. This finding has been confirmed in almost all subsequent studies, although the retrospective nature of some requires that they be considered as hypothesis-generating only. The relationship between sleep apnea and cancer, and the pathophysiological mechanisms governing it, could be clarified in the near future in a currently on-going study in a large group of melanoma patients.
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Affiliation(s)
- Miguel Ángel Martínez-García
- Servicio de Neumología. Hospital Universitario y Politécnico La Fe, Valencia, España; CIBER de Enfermedades Respiratorias (CIBERES), Madrid, España.
| | | | - Isaac Almendros
- Unidad de Biofísica y Bioingeniería, Facultad de Medicina, Universidad de Barcelona, Barcelona, España; CIBER de Enfermedades Respiratorias (CIBERES), Madrid, España
| | - Ramón Farré
- Unidad de Biofísica y Bioingeniería, Facultad de Medicina, Universidad de Barcelona, Barcelona, España; CIBER de Enfermedades Respiratorias (CIBERES), Madrid, España
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26
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Zheng J, Almendros I, Wang Y, Zhang SX, Carreras A, Qiao Z, Gozal D. Reduced NADPH oxidase type 2 activity mediates sleep fragmentation-induced effects on TC1 tumors in mice. Oncoimmunology 2015; 4:e976057. [PMID: 25949873 DOI: 10.4161/2162402x.2014.976057] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 10/09/2014] [Indexed: 12/14/2022] Open
Abstract
The molecular mechanisms underlying how sleep fragmentation (SF) influences cancer growth and progression remain largely elusive. Here, we present evidence that SF reduced ROS production by downregulating gp91phox expression and activity in TC1 cell tumor associated macrophages (TAMs), while genetic ablation of phagocytic Nox2 activity increased tumor cell proliferation, motility, invasion, and extravasation in vitro. Importantly, the in vivo studies using immunocompetent syngeneic murine tumor models suggested that Nox2 deficiency mimics SF-induced TAMs infiltration and subsequent tumor growth and invasion. Taken together, these studies reveal that perturbed sleep could adversely affect innate immunity within the tumor by altering Nox2 expression and activity, and indicate that selective potentiation of Nox2 activity may present a novel therapeutic strategy in the treatment of cancer.
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Key Words
- ANOVA, Analysis of variance
- FBS, fetal bovine serum
- HEPES, 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid
- MFI, median fluorescence intensities
- NADPH oxidase
- Nox2, NADPH Oxidase Type 2
- PMA, phorbol 12-myristate 13-acetate
- ROS, reactive oxygen species
- SE, standard error
- SF, sleep fragmentation
- TAMs, tumor associated macrophages
- TLR-4, toll like receptor 4
- WT, wild type
- cancer
- reactive oxygen species
- rpm, revolutions per minute
- sleep apnea
- tumor associated macrophage
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Affiliation(s)
- Jiamao Zheng
- Section of Pediatric Sleep Medicine; Department of Pediatrics; Pritzker School of Medicine; Biological Sciences Division; The University of Chicago ; Chicago, Illinois, USA
| | - Isaac Almendros
- Section of Pediatric Sleep Medicine; Department of Pediatrics; Pritzker School of Medicine; Biological Sciences Division; The University of Chicago ; Chicago, Illinois, USA
| | - Yang Wang
- Section of Pediatric Sleep Medicine; Department of Pediatrics; Pritzker School of Medicine; Biological Sciences Division; The University of Chicago ; Chicago, Illinois, USA
| | - Shelley X Zhang
- Section of Pediatric Sleep Medicine; Department of Pediatrics; Pritzker School of Medicine; Biological Sciences Division; The University of Chicago ; Chicago, Illinois, USA
| | - Alba Carreras
- Section of Pediatric Sleep Medicine; Department of Pediatrics; Pritzker School of Medicine; Biological Sciences Division; The University of Chicago ; Chicago, Illinois, USA
| | - Zhuanhong Qiao
- Section of Pediatric Sleep Medicine; Department of Pediatrics; Pritzker School of Medicine; Biological Sciences Division; The University of Chicago ; Chicago, Illinois, USA
| | - David Gozal
- Section of Pediatric Sleep Medicine; Department of Pediatrics; Pritzker School of Medicine; Biological Sciences Division; The University of Chicago ; Chicago, Illinois, USA
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27
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Briançon-Marjollet A, Weiszenstein M, Henri M, Thomas A, Godin-Ribuot D, Polak J. The impact of sleep disorders on glucose metabolism: endocrine and molecular mechanisms. Diabetol Metab Syndr 2015; 7:25. [PMID: 25834642 PMCID: PMC4381534 DOI: 10.1186/s13098-015-0018-3] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Accepted: 03/05/2015] [Indexed: 12/11/2022] Open
Abstract
Modern lifestyle has profoundly modified human sleep habits. Sleep duration has shortened over recent decades from 8 to 6.5 hours resulting in chronic sleep deprivation. Additionally, irregular sleep, shift work and travelling across time zones lead to disruption of circadian rhythms and asynchrony between the master hypothalamic clock and pacemakers in peripheral tissues. Furthermore, obstructive sleep apnea syndrome (OSA), which affects 4 - 15% of the population, is not only characterized by impaired sleep architecture but also by repetitive hemoglobin desaturations during sleep. Epidemiological studies have identified impaired sleep as an independent risk factor for all cause of-, as well as for cardiovascular, mortality/morbidity. More recently, sleep abnormalities were causally linked to impairments in glucose homeostasis, metabolic syndrome and Type 2 Diabetes Mellitus (T2DM). This review summarized current knowledge on the metabolic alterations associated with the most prevalent sleep disturbances, i.e. short sleep duration, shift work and OSA. We have focused on various endocrine and molecular mechanisms underlying the associations between inadequate sleep quality, quantity and timing with impaired glucose tolerance, insulin resistance and pancreatic β-cell dysfunction. Of these mechanisms, the role of the hypothalamic-pituitary-adrenal axis, circadian pacemakers in peripheral tissues, adipose tissue metabolism, sympathetic nervous system activation, oxidative stress and whole-body inflammation are discussed. Additionally, the impact of intermittent hypoxia and sleep fragmentation (key components of OSA) on intracellular signaling and metabolism in muscle, liver, fat and pancreas are also examined. In summary, this review provides endocrine and molecular explanations for the associations between common sleep disturbances and the pathogenesis of T2DM.
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Affiliation(s)
- Anne Briançon-Marjollet
- />Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France
- />INSERM U1042, F-38041 Grenoble, Cedex France
| | - Martin Weiszenstein
- />Centre for Research on Diabetes, Metabolism and Nutrition, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Marion Henri
- />Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France
- />INSERM U1042, F-38041 Grenoble, Cedex France
| | - Amandine Thomas
- />Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France
- />INSERM U1042, F-38041 Grenoble, Cedex France
| | - Diane Godin-Ribuot
- />Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France
- />INSERM U1042, F-38041 Grenoble, Cedex France
| | - Jan Polak
- />Centre for Research on Diabetes, Metabolism and Nutrition, Third Faculty of Medicine, Charles University, Prague, Czech Republic
- />2nd Internal Medicine Department, University Hospital Kralovske Vinohrady, Prague, Czech Republic
- />Sports Medicine Department, Third Faculty of Medicine, Charles University in Prague, Ruska 87, Praha 10, 100 00 Czech Republic
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28
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Abstract
Obstructive sleep apnea (OSA) is independently associated with cardiovascular and cardiometabolic risk in several large epidemiologic studies. OSA leads to several physiologic disturbances such as intermittent hypoxia, sleep fragmentation, and increase in autonomic tone. These disturbances have been associated with insulin resistance and type 2 diabetes mellitus (T2DM) in animal and human studies. Studies also suggest a bidirectional relationship between OSA and T2DM whereby T2DM itself might contribute to the features of OSA. Moreover, successful treatment of OSA may reduce these risks, although this is controversial. The purpose of this article is to review 1) the links and bidirectional associations between OSA and T2DM; 2) the pathogenic mechanisms that might link these two disease states; 3) the role of continuous positive airway pressure therapy in improving glucose tolerance, sensitivity, and resistance; and 4) the implications for clinical practice.
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Affiliation(s)
- Preethi Rajan
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Hofstra-North Shore LIJ School of Medicine, New Hyde Park, NY, USA
| | - Harly Greenberg
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Hofstra-North Shore LIJ School of Medicine, New Hyde Park, NY, USA
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