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Yang A, Guo L, Zhang Y, Qiao C, Wang Y, Li J, Wang M, Xing J, Li F, Ji L, Guo H, Zhang R. MFN2-mediated mitochondrial fusion facilitates acute hypobaric hypoxia-induced cardiac dysfunction by increasing glucose catabolism and ROS production. Biochim Biophys Acta Gen Subj 2023:130413. [PMID: 37331409 DOI: 10.1016/j.bbagen.2023.130413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 06/06/2023] [Accepted: 06/13/2023] [Indexed: 06/20/2023]
Abstract
BACKGROUND Rapid ascent to high-altitude environment which is characterized by acute hypobaric hypoxia (HH) may increase the risk of cardiac dysfunction. However, the potential regulatory mechanisms and prevention strategies for acute HH-induced cardiac dysfunction have not been fully clarified. Mitofusin 2 (MFN2) is highly expressed in the heart and is involved in the regulation of mitochondrial fusion and cell metabolism. To date, however, the significance of MFN2 in the heart under acute HH has not been investigated. METHODS AND RESULTS Our study revealed that MFN2 upregulation in hearts of mice during acute HH led to cardiac dysfunction. In vitro experiments showed that the decrease in oxygen concentration induced upregulation of MFN2, impairing cardiomyocyte contractility and increasing the risk of QT prolongation. Additionally, acute HH-induced MFN2 upregulation promoted glucose catabolism and led to excessive mitochondrial reactive oxygen species (ROS) production in cardiomyocytes, ultimately resulting in decreased mitochondrial function. Furthermore, co-immunoprecipitation (co-IP) and mass spectrometry analyses indicated that MFN2 interacted with the NADH-ubiquinone oxidoreductase 23 kDa subunit (NDUFS8). Specifically, acute HH-induced MFN2 upregulation increased NDUFS8-dependent complex I activity. CONCLUSIONS Taken together, our studies provide the first direct evidence that MFN2 upregulation exacerbates acute HH-induced cardiac dysfunction by increasing glucose catabolism and ROS production. GENERAL SIGNIFICANCE Our studies indicate that MFN2 may be a promising therapeutic target for cardiac dysfunction under acute HH.
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Affiliation(s)
- Ailin Yang
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Lifei Guo
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Yanfang Zhang
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Chenjin Qiao
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Yijin Wang
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Jiaying Li
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Min Wang
- College of Life Sciences, Northwest University, Xi'an 710069, China; Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Jinliang Xing
- State Key Laboratory of Cancer Biology and Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an 710032, China
| | - Fei Li
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Lele Ji
- Experimental Teaching Center of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China.
| | - Haitao Guo
- State Key Laboratory of Cancer Biology and Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an 710032, China.
| | - Ru Zhang
- State Key Laboratory of Cancer Biology and Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an 710032, China.
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Louis J, Bennett S, Owens DJ, Tiollier E, Brocherie F, Carneiro MAS, Nunes PRP, Costa B, Castro-e-Souza P, Lima LA, Lisboa F, Oliveira-Júnior G, Kassiano W, Cyrino ES, Orsatti FL, Bossi AH, Matta G, Tolomeu de Oliveira G, Renato Melo F, Rocha Soares E, Ocelli Ungheri B, Daros Pinto M, Nuzzo JL, Latella C, van den Hoek D, Mallard A, Spathis J, DeBlauw JA, Ives SJ, Ravanelli N, Narang BJ, Debevec T, Baptista LC, Padrão AI, Oliveira J, Mota J, Zacca R, Nikolaidis PT, Lott DJ, Forbes SC, Cooke K, Taivassalo T, Elmer SJ, Durocher JJ, Fernandes RJ, Silva G, Costa MJ. Commentaries on Viewpoint: Hoping for the best, prepared for the worst: can we perform remote data collection in sport sciences? J Appl Physiol (1985) 2022; 133:1433-1440. [PMID: 36509417 PMCID: PMC9762970 DOI: 10.1152/japplphysiol.00613.2022] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- Julien Louis
- Research Institute for Sport and Exercise Science, Liverpool John Moores University, Liverpool, United Kingdom
| | - Sam Bennett
- Research Institute for Sport and Exercise Science, Liverpool John Moores University, Liverpool, United Kingdom,Center for Biological Clocks Research, Department of Biology, Texas A&M University, College Station, Texas, United States
| | - Daniel J Owens
- Research Institute for Sport and Exercise Science, Liverpool John Moores University, Liverpool, United Kingdom
| | - Eve Tiollier
- Laboratory Sport, Expertise and Performance (EA 7370), French Institute of Sport, Paris, France
| | - Franck Brocherie
- Laboratory Sport, Expertise and Performance (EA 7370), French Institute of Sport, Paris, France
| | - Marcelo A. S. Carneiro
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, Brazil,Applied Physiology, Nutrition and Exercise Research Group, Exercise Biology Research Lab (BioEx), Federal University of Triangulo Mineiro (UFTM), Uberaba, Brazil
| | - Paulo Ricardo P. Nunes
- Applied Physiology, Nutrition and Exercise Research Group, Exercise Biology Research Lab (BioEx), Federal University of Triangulo Mineiro (UFTM), Uberaba, Brazil,Department of Body and Human Movement, Minas Gerais State University (UEMG), Passos, Brazil
| | - Bruna Costa
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, Brazil
| | - Pâmela Castro-e-Souza
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, Brazil
| | - Luís A. Lima
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, Brazil
| | - Felipe Lisboa
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, Brazil
| | - Gersiel Oliveira-Júnior
- Applied Physiology, Nutrition and Exercise Research Group, Exercise Biology Research Lab (BioEx), Federal University of Triangulo Mineiro (UFTM), Uberaba, Brazil,Applied Physiology & Nutrition Research Group, School of Physical Education and Sport, Rheumatology Division, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, Brazil
| | - Witalo Kassiano
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, Brazil
| | - Edilson S. Cyrino
- Metabolism, Nutrition and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, Brazil
| | - Fábio L. Orsatti
- Applied Physiology, Nutrition and Exercise Research Group, Exercise Biology Research Lab (BioEx), Federal University of Triangulo Mineiro (UFTM), Uberaba, Brazil
| | - Arthur Henrique Bossi
- School of Applied Sciences, Edinburgh Napier University, Edinburgh, United Kingdom,The Mountain Bike Centre of Scotland, Peel Tower, Peebles, United Kingdom
| | - Guilherme Matta
- School of Psychology and Life Sciences, Faculty of Science, Engineering and Social Sciences, Canterbury Christ Church University, Canterbury, United Kingdom
| | - Géssyca Tolomeu de Oliveira
- Physiology and Human Performance Research Group, Department of Physiology, Federal University of Juiz de Fora, Juiz de Fora, Brazil,Aquatic Activities Research Group, Department of Physical Education, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Ferreira Renato Melo
- Aquatic Activities Research Group, Department of Physical Education, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Everton Rocha Soares
- Physical Evaluation and Resistance Training Research Group, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Bruno Ocelli Ungheri
- Leisure, Management and Policy Group, Department of Physical Education, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Matheus Daros Pinto
- Centre for Human Performance, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia
| | - James L. Nuzzo
- Centre for Human Performance, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia
| | - Christopher Latella
- Centre for Human Performance, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia,Neurophysiology Research Laboratory, Edith Cowan University, Joondalup, Western Australia, Australia
| | - Daniel van den Hoek
- School of Behavioural and Health Sciences, Australian Catholic University, Banyo, Queensland, Australia
| | - Alistair Mallard
- School of Human Movement and Nutrition Sciences, Faculty of Health and Behavioural Sciences, University of Queensland, Brisbane, Queensland, Australia
| | - Jemima Spathis
- School of Behavioural and Health Sciences, Australian Catholic University, Banyo, Queensland, Australia
| | - Justin A. DeBlauw
- Health and Human Physiological Sciences, Skidmore College, Saratoga Springs, New York, United States
| | - Stephen J. Ives
- Health and Human Physiological Sciences, Skidmore College, Saratoga Springs, New York, United States
| | - Nicholas Ravanelli
- School of Kinesiology, Lakehead University, Thunder Bay, Ontario, Canada
| | - Benjamin J. Narang
- Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia,Department of Automatics, Biocybernetics, and Robotics, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Tadej Debevec
- Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia,Department of Automatics, Biocybernetics, and Robotics, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Liliana C. Baptista
- Research Center in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sports, University of Porto (FADEUP), Porto, Portugal,Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal,Department of Medicine, Division of Gerontology, Geriatrics and Palliative Care, University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Ana Isabel Padrão
- Research Center in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sports, University of Porto (FADEUP), Porto, Portugal,Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | - José Oliveira
- Research Center in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sports, University of Porto (FADEUP), Porto, Portugal,Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | - Jorge Mota
- Research Center in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sports, University of Porto (FADEUP), Porto, Portugal,Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | - Rodrigo Zacca
- Research Center in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sports, University of Porto (FADEUP), Porto, Portugal,Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | | | - Donovan J. Lott
- Department of Physical Therapy, University of Florida, Gainesville, Florida, United States
| | - Sean C. Forbes
- Department of Physical Therapy, University of Florida, Gainesville, Florida, United States
| | - Korey Cooke
- University of Florida Health Rehab Hospital, Gainesville, Florida, United States
| | - Tanja Taivassalo
- Department of Physiology and Aging, University of Florida, Gainesville, Florida, United States
| | - Steven J. Elmer
- Department of Kinesiology and Integrative Physiology, Michigan Technological University, Houghton, Michigan, United States,Health Research Institute, Michigan Technological University, Houghton, Michigan, United States
| | - John J. Durocher
- Department of Biological Sciences, Integrative Human Health Program, Purdue University Northwest, Hammond, Indiana, United States,Integrative Physiology and Health Sciences Center, Purdue University Northwest, Hammond, Indiana, United States
| | - Ricardo J. Fernandes
- Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Porto, Portugal,Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, Porto, Portugal
| | - Gonçalo Silva
- Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Porto, Portugal,Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, Porto, Portugal
| | - Mário J. Costa
- Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Porto, Portugal,Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, Porto, Portugal
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3
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Mallet RT, Burtscher J, Richalet JP, Millet GP, Burtscher M. Impact of High Altitude on Cardiovascular Health: Current Perspectives. Vasc Health Risk Manag 2021; 17:317-335. [PMID: 34135590 PMCID: PMC8197622 DOI: 10.2147/vhrm.s294121] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 05/12/2021] [Indexed: 12/12/2022] Open
Abstract
Globally, about 400 million people reside at terrestrial altitudes above 1500 m, and more than 100 million lowlanders visit mountainous areas above 2500 m annually. The interactions between the low barometric pressure and partial pressure of O2, climate, individual genetic, lifestyle and socio-economic factors, as well as adaptation and acclimatization processes at high elevations are extremely complex. It is challenging to decipher the effects of these myriad factors on the cardiovascular health in high altitude residents, and even more so in those ascending to high altitudes with or without preexisting diseases. This review aims to interpret epidemiological observations in high-altitude populations; present and discuss cardiovascular responses to acute and subacute high-altitude exposure in general and more specifically in people with preexisting cardiovascular diseases; the relations between cardiovascular pathologies and neurodegenerative diseases at altitude; the effects of high-altitude exercise; and the putative cardioprotective mechanisms of hypobaric hypoxia.
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Affiliation(s)
- Robert T Mallet
- Department of Physiology and Anatomy, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Johannes Burtscher
- Department of Biomedical Sciences, University of Lausanne, Lausanne, CH-1015, Switzerland
- Institute of Sport Sciences, University of Lausanne, Lausanne, CH-1015, Switzerland
| | - Jean-Paul Richalet
- Laboratoire Hypoxie & Poumon, UMR Inserm U1272, Université Sorbonne Paris Nord 13, Bobigny Cedex, F-93017, France
| | - Gregoire P Millet
- Department of Biomedical Sciences, University of Lausanne, Lausanne, CH-1015, Switzerland
- Institute of Sport Sciences, University of Lausanne, Lausanne, CH-1015, Switzerland
| | - Martin Burtscher
- Department of Sport Science, University of Innsbruck, Innsbruck, A-6020, Austria
- Austrian Society for Alpine and High-Altitude Medicine, Mieming, Austria
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4
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Chacón MA, Calderon A, Fernández-Sarmiento J, Rios B. Clinical Course of Pediatric Acute Respiratory Distress Syndrome at Moderate Altitude. Cureus 2020; 12:e10651. [PMID: 33133821 PMCID: PMC7586349 DOI: 10.7759/cureus.10651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Background This is a retrospective case series, and the main objective is to describe the epidemiology, clinical features, and outcomes of pediatric acute respiratory distress syndrome in patients at moderate altitude. Methods Children from the Pediatric Intensive Care Unit (PICU) at the Fundación Cardioinfantil, hospitalized with acute respiratory distress syndrome, were prospectively enrolled from March 2009 to March 2014. We evaluated the demographic data, mechanical ventilation, gas exchange, hemodynamics, and multiorgan dysfunction. Results During the study period, 88 patients met the inclusion criteria. Bronchiolitis and pneumonia were the most common causes of acute respiratory distress syndrome. The overall mortality rate was 19.5%. At the beginning of the study, the average relation between blood pressure and the fraction of inspired oxygen (Pa/Fi) was 130.3 ± 52.2; tidal volume was 7.94 ± 1.7 ml/kg, the plateau pressure 25.3 ± 5.09 cmH2O, and positive end-expiratory pressure was 7.2 ± 3.2 cmH2O. After 24 hours, the mortality rate in the group with severe acute respiratory distress syndrome (Pa/Fi <100) was 46.7%, in the moderate acute respiratory distress syndrome group (Pa/Fi 100-200) it was 11.9%, and finally in the mild acute respiratory distress syndrome group (Pa/Fi 200-300) the mortality was 25%. This study found a relation between serum lactate value and positive end-expiratory pressure and mortality (p = 0.02 and 0.0013). Conclusions This study shows that pediatric acute respiratory distress syndrome patients at moderate altitudes have similar clinical behavior, including mortality rate, to those at low altitudes. However, Pa/Fi is not a good predictor of mortality for patients with mild and moderate acute respiratory distress syndrome.
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Affiliation(s)
- María A Chacón
- Pediatric Critical Care, Universidad de La Sabana, Bogotá, COL
| | | | | | - Blanca Rios
- Pediatric Critical Care, Fundación Cardioinfantil Instituto de Cardiología, Bogotá, COL
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5
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Rood K, Lopez V, La Frano MR, Fiehn O, Zhang L, Blood AB, Wilson SM. Gestational Hypoxia and Programing of Lung Metabolism. Front Physiol 2019; 10:1453. [PMID: 31849704 PMCID: PMC6895135 DOI: 10.3389/fphys.2019.01453] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 11/11/2019] [Indexed: 12/12/2022] Open
Abstract
Gestational hypoxia is a risk factor in the development of pulmonary hypertension in the newborn and other sequela, however, the mechanisms associated with the disease remain poorly understood. This review highlights disruption of metabolism by antenatal high altitude hypoxia and the impact this has on pulmonary hypertension in the newborn with discussion of model organisms and human populations. There is particular emphasis on modifications in glucose and lipid metabolism along with alterations in mitochondrial function. Additional focus is placed on increases in oxidative stress and the progression of pulmonary vascular disease in the newborn and on the need for further exploration using a combination of contemporary and classical approaches.
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Affiliation(s)
- Kristiana Rood
- Lawrence D. Longo MD Center for Perinatal Biology, School of Medicine, Loma Linda University, Loma Linda, CA, United States
| | - Vanessa Lopez
- Lawrence D. Longo MD Center for Perinatal Biology, School of Medicine, Loma Linda University, Loma Linda, CA, United States
| | - Michael R La Frano
- Department of Food Science and Nutrition, Center for Health Research, California Polytechnic State University, San Luis Obispo, CA, United States.,Center for Health Research, California Polytechnic State University, San Luis Obispo, CA, United States
| | - Oliver Fiehn
- NIH West Coast Metabolomics Center, University of California, Davis, Davis, CA, United States.,Department of Molecular and Cellular Biology, University of California, Davis, Davis, CA, United States
| | - Lubo Zhang
- Lawrence D. Longo MD Center for Perinatal Biology, School of Medicine, Loma Linda University, Loma Linda, CA, United States
| | - Arlin B Blood
- Lawrence D. Longo MD Center for Perinatal Biology, School of Medicine, Loma Linda University, Loma Linda, CA, United States
| | - Sean M Wilson
- Lawrence D. Longo MD Center for Perinatal Biology, School of Medicine, Loma Linda University, Loma Linda, CA, United States
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6
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Zhang Z, Luo X, Lv Y, Yan L, Xu S, Wang Y, Zhong Y, Hang C, Jyotsnav J, Lai D, Shen Z, Xu X, Ma X, Chen Z, Pan Y, Du L. Intrauterine Growth Restriction Programs Intergenerational Transmission of Pulmonary Arterial Hypertension and Endothelial Dysfunction via Sperm Epigenetic Modifications. Hypertension 2019; 74:1160-1171. [PMID: 31596625 DOI: 10.1161/hypertensionaha.119.13634] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Intrauterine life represents a window of phenotypic plasticity which carries consequences for later health in adulthood as well as health of subsequent generations. Intrauterine growth-restricted fetuses (intrauterine growth restriction [IUGR]) have a higher risk of pulmonary arterial hypertension in adulthood. Endothelial dysfunction, characterized by hyperproliferation, invasive migration, and disordered angiogenesis, is a hallmark of pulmonary arterial hypertension pathogenesis. Growing evidence suggests that intergenerational transmission of disease, including metabolic syndrome, can be induced by IUGR. Epigenetic modification of the paternal germline is implicated in this transmission. However, it is unclear whether offspring of individuals born with IUGR are also at risk of developing pulmonary arterial hypertension and endothelial dysfunction. Using a model of maternal caloric restriction to induce IUGR, we found that first and second generations of IUGR exhibited elevated pulmonary arterial pressure, myocardial, and vascular remodeling after prolonged exposure to hypoxia. Primary pulmonary vascular endothelial cells (PVECs) from both first and second generations of IUGR exhibited greater proliferation, migration, and angiogenesis. Moreover, in 2 generations, PVECs-derived ET-1 (endothelin-1) was activated by IUGR and hypoxia, and its knockdown mitigated PVECs dysregulation. Most interestingly, within ET-1 first intron, reduced DNA methylation and enhanced tri-methylation of lysine 4 on histone H3 were observed in PVECs and sperm of first generation of IUGR, with DNA demethylation in PVECs of second generation of IUGR. These results suggest that IUGR permanently altered epigenetic signatures of ET-1 from the sperm and PVECs in the first generation, which was subsequently transferred to PVECs of offspring. This mechanism would yield 2 generations with endothelial dysfunction and pulmonary arterial hypertension-like pathophysiological features in adulthood.
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Affiliation(s)
- Ziming Zhang
- From the Department of Pediatrics (Z.Z., X.L., L.Y., S.X., Y.W., Y.Z., C.H., J.J.), the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People's Republic of China
| | - Xiaofei Luo
- From the Department of Pediatrics (Z.Z., X.L., L.Y., S.X., Y.W., Y.Z., C.H., J.J.), the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People's Republic of China
| | - Ying Lv
- Department of Pediatric Health Care (Y.L.), the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People's Republic of China
| | - Lingling Yan
- From the Department of Pediatrics (Z.Z., X.L., L.Y., S.X., Y.W., Y.Z., C.H., J.J.), the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People's Republic of China
| | - Shanshan Xu
- From the Department of Pediatrics (Z.Z., X.L., L.Y., S.X., Y.W., Y.Z., C.H., J.J.), the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People's Republic of China
| | - Yu Wang
- From the Department of Pediatrics (Z.Z., X.L., L.Y., S.X., Y.W., Y.Z., C.H., J.J.), the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People's Republic of China
| | - Ying Zhong
- From the Department of Pediatrics (Z.Z., X.L., L.Y., S.X., Y.W., Y.Z., C.H., J.J.), the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People's Republic of China
| | - Chengcheng Hang
- From the Department of Pediatrics (Z.Z., X.L., L.Y., S.X., Y.W., Y.Z., C.H., J.J.), the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People's Republic of China
| | - Joynauth Jyotsnav
- From the Department of Pediatrics (Z.Z., X.L., L.Y., S.X., Y.W., Y.Z., C.H., J.J.), the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People's Republic of China
| | - Dengming Lai
- Department of Neonatal Surgery (D.L.), the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People's Republic of China
| | - Zheng Shen
- Laboratory Test Center (Z.S.), the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People's Republic of China
| | - Xuefeng Xu
- Department of Respiratory Medicine (X.X.), the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People's Republic of China
| | - Xiaolu Ma
- Department of Neonatology (X.M., Z.C., L.D.), the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People's Republic of China
| | - Zheng Chen
- Department of Neonatology (X.M., Z.C., L.D.), the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People's Republic of China
| | - Yun Pan
- College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, Zhejiang Province, People's Republic of China (Y.P.)
| | - Lizhong Du
- Department of Neonatology (X.M., Z.C., L.D.), the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People's Republic of China
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7
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Malacrida S, Giannella A, Ceolotto G, Reggiani C, Vezzoli A, Mrakic-Sposta S, Moretti S, Turner R, Falla M, Brugger H, Strapazzon G. Transcription Factors Regulation in Human Peripheral White Blood Cells during Hypobaric Hypoxia Exposure: an in-vivo experimental study. Sci Rep 2019; 9:9901. [PMID: 31289332 PMCID: PMC6617471 DOI: 10.1038/s41598-019-46391-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 06/27/2019] [Indexed: 01/10/2023] Open
Abstract
High altitude is a natural laboratory, within which the clinical study of human physiological response to hypobaric hypoxia (HH) is possible. Failure in the response results in progressive hypoxemia, inflammation and increased tissue oxidative stress (OxS). Thus, investigating temporal changes in key transcription factors (TFs) HIF-1α, HIF-2α, NF-κB and NRF2 mRNA levels, relative to OxS and inflammatory markers, may reveal molecular targets which contrast deleterious effects of hypoxia. Biological samples and clinical data from 15 healthy participants were collected at baseline and after rapid, passive ascent to 3830 m (24 h and 72 h). Gene expression was assessed by qPCR and ROS generation was determined by EPR spectroscopy. Oxidative damage and cytokine levels were estimated by immuno or enzymatic methods. Hypoxia transiently enhanced HIF-1α mRNA levels over time reaching a peak after 24 h. Whereas, HIF-2α and NRF2 mRNA levels increased over time. In contrast, the NF-κB mRNA levels remained unchanged. Plasma levels of IL-1β and IL-6 also remained within normal ranges. ROS production rate and markers of OxS damage were significantly increased over time. The analysis of TF-gene expression suggests that HIF-1α is a lead TF during sub-acute HH exposure. The prolongation of the HH exposure led to a switch between HIF-1α and HIF-2α/NRF2, suggesting the activation of new pathways. These results provide new insights regarding the temporal regulation of TFs, inflammatory state, and ROS homeostasis involved in human hypoxic response, potentially also relevant to the mediation of diseases that induce a hypoxic state.
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Affiliation(s)
- Sandro Malacrida
- Institute of Mountain Emergency Medicine, Eurac Research, Bolzano, Italy. .,Department of Biomedical Sciences, University of Padova, Padova, Italy.
| | - Alessandra Giannella
- Department of Medicine-DIMED, Campus Biomedico Pietro D'Abano, University of Padova, Padova, Italy
| | - Giulio Ceolotto
- Department of Medicine-DIMED, Campus Biomedico Pietro D'Abano, University of Padova, Padova, Italy
| | - Carlo Reggiani
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Alessandra Vezzoli
- Institute of Bioimaging and Molecular Physiology, National Council of Research, Segrate (Milan), Italy
| | - Simona Mrakic-Sposta
- Institute of Bioimaging and Molecular Physiology, National Council of Research, Segrate (Milan), Italy
| | - Sarah Moretti
- Institute of Bioimaging and Molecular Physiology, National Council of Research, Segrate (Milan), Italy
| | - Rachel Turner
- Institute of Mountain Emergency Medicine, Eurac Research, Bolzano, Italy
| | - Marika Falla
- Department of Neurology, General Hospital of Bolzano, Bolzano, Italy
| | - Hermann Brugger
- Institute of Mountain Emergency Medicine, Eurac Research, Bolzano, Italy
| | - Giacomo Strapazzon
- Institute of Mountain Emergency Medicine, Eurac Research, Bolzano, Italy
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8
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Blissenbach B, Nakas CT, Krönke M, Geiser T, Merz TM, Pichler Hefti J. Hypoxia-induced changes in plasma micro-RNAs correlate with pulmonary artery pressure at high altitude. Am J Physiol Lung Cell Mol Physiol 2017; 314:L157-L164. [PMID: 28971974 DOI: 10.1152/ajplung.00146.2017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
In vitro and animal studies revealed micro-RNAs (miRs) to be involved in modulation of hypoxia-induced pulmonary hypertension (HPH). However, knowledge of circulating miRs in humans in the context of HPH is very limited. Since symptoms of HPH are nonspecific and noninvasive diagnostic parameters do not exist, a disease-specific and hypoxemia-independent biomarker indicating HPH would be of clinical value. To examine whether plasma miR levels correlate with hypoxia-induced increase in pulmonary artery pressures, plasma miRs were assessed in a model of hypoxia-related pulmonary hypertension in humans exposed to extreme altitude. Forty healthy volunteers were repetitively examined during a high-altitude expedition up to an altitude of 7,050 m. Plasma levels of miR-17, -21, and -190 were measured by real-time quantitative PCR and correlated with systolic pulmonary artery pressure (SPAP), which was assessed by echocardiography. A significant altitude-dependent increase in circulating miR expression was found (all P values < 0.0001). Compared with baseline at 500 m, miR-17 changed by 4.72 ± 0.57-fold, miR-21 changed by 1.91 ± 0.33-fold, and miR-190 changed by 3.61 ± 0.54-fold at 7,050 m (means ± SD). Even after adjusting for hypoxemia, miR-17 and miR-190 were found to be independently correlated with increased SPAP. Progressive hypobaric hypoxia significantly affects levels of circulating miR-17, -21, and -190. Independently from the extent of hypoxemia, miR-17 and -190 significantly correlate with increased SPAP. These novel findings provide evidence for an epigenetic modulation of hypoxia-induced increase in pulmonary artery pressures by miR-17 and -190 and suggest the potential value of these miRs as biomarkers for HPH.
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Affiliation(s)
- Birgit Blissenbach
- Institute for Medical Microbiology, Immunology and Hygiene, University of Cologne , Cologne , Germany.,Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne , Cologne , Germany
| | - Christos T Nakas
- Institute of Clinical Chemistry, Inselspital, Bern University Hospital, University of Bern , Bern , Switzerland.,Laboratory of Biometry, University of Thessaly , Volos , Greece
| | - Martin Krönke
- Institute for Medical Microbiology, Immunology and Hygiene, University of Cologne , Cologne , Germany.,Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne , Cologne , Germany
| | - Thomas Geiser
- Department of Pulmonary Medicine, Inselspital, Bern University Hospital, University of Bern , Bern , Switzerland
| | - Tobias M Merz
- Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern , Bern , Switzerland
| | - Jacqueline Pichler Hefti
- Institute for Medical Microbiology, Immunology and Hygiene, University of Cologne , Cologne , Germany.,Department of Pulmonary Medicine, Inselspital, Bern University Hospital, University of Bern , Bern , Switzerland
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9
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Jain K, Suryakumar G, Ganju L, Singh SB. Amelioration of ER stress by 4-phenylbutyric acid reduces chronic hypoxia induced cardiac damage and improves hypoxic tolerance through upregulation of HIF-1α. Vascul Pharmacol 2016; 83:36-46. [PMID: 27058435 DOI: 10.1016/j.vph.2016.03.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 02/27/2016] [Accepted: 03/12/2016] [Indexed: 12/14/2022]
Abstract
While endoplasmic reticulum (ER) stress has been observed in several human diseases, few studies have reported the involvement of ER stress in chronic hypoxia (CH) induced cardiac damage. Hypoxia, such as that prevalent at high altitude (HA), forms the underlying cause of several maladies including cardiovascular diseases. While the role of hypoxia inducible factor-1 (HIF-1α) in the adaptive responses to hypoxia is known, the role of the unfolded protein response (UPR) is only recently being explored in the HA pathophysiologies. The present study investigates the effect of ER stress modulation on CH mediated injury and the cardioprotective action of 4-phenylbutyric acid (PBA) in enhancing survival response under hypoxia. Here, we observed that exposure of rats, for 1, 7 and 14days CH to a simulated altitude of 7620m, led to cardiac hypertrophy and significant protein oxidation. This induced the activation of UPR signaling mechanisms, mediated by PERK, IRE1α and ATF6. By 14days, there was a marked upregulation of apoptosis, evident in increased CHOP and caspase-3/9 activity. PBA reduced CH induced right ventricular enlargement and apoptosis. Further, in contrast to tunicamycin, PBA considerably enhanced hypoxic tolerance. An elevation in the level of antioxidant enzymes, HIF-1α and its regulated proteins (HO-1, GLUT-1) was observed in the PBA administered animals, along with a concomitant suppression of UPR markers. Our study thus emphasizes upon the attenuation of ER stress by PBA as a mechanism to diminish CH induced cardiac injury and boost hypoxic survival, providing an insight into the novel relationship between the HIF-1α and UPR under hypoxia.
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Affiliation(s)
- Kanika Jain
- Cellular Biochemistry Division, Defence Institute of Physiology and Allied Sciences, Lucknow Road, Timarpur, Delhi 110 054, India
| | - Geetha Suryakumar
- Cellular Biochemistry Division, Defence Institute of Physiology and Allied Sciences, Lucknow Road, Timarpur, Delhi 110 054, India.
| | - Lilly Ganju
- Cellular Biochemistry Division, Defence Institute of Physiology and Allied Sciences, Lucknow Road, Timarpur, Delhi 110 054, India
| | - Shashi Bala Singh
- Cellular Biochemistry Division, Defence Institute of Physiology and Allied Sciences, Lucknow Road, Timarpur, Delhi 110 054, India
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10
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Epigenetics in Cardiovascular Regulation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 903:55-62. [DOI: 10.1007/978-1-4899-7678-9_4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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11
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Bruno RM, Ghiadoni L, Pratali L. Vascular adaptation to extreme conditions: The role of hypoxia. Artery Res 2016. [DOI: 10.1016/j.artres.2016.02.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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12
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Berger MM, Macholz F, Mairbäurl H, Bärtsch P. Remote ischemic preconditioning for prevention of high-altitude diseases: fact or fiction? J Appl Physiol (1985) 2015; 119:1143-51. [PMID: 26089545 DOI: 10.1152/japplphysiol.00156.2015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 06/17/2015] [Indexed: 01/14/2023] Open
Abstract
Preconditioning refers to exposure to brief episodes of potentially adverse stimuli and protects against injury during subsequent exposures. This was first described in the heart, where episodes of ischemia/reperfusion render the myocardium resistant to subsequent ischemic injury, which is likely caused by reactive oxygen species (ROS) and proinflammatory processes. Protection of the heart was also found when preconditioning was performed in an organ different from the target, which is called remote ischemic preconditioning (RIPC). The mechanisms causing protection seem to include stimulation of nitric oxide (NO) synthase, increase in antioxidant enzymes, and downregulation of proinflammatory cytokines. These pathways are also thought to play a role in high-altitude diseases: high-altitude pulmonary edema (HAPE) is associated with decreased bioavailability of NO and increased generation of ROS, whereas mechanisms causing acute mountain sickness (AMS) and high-altitude cerebral edema (HACE) seem to involve cytotoxic effects by ROS and inflammation. Based on these apparent similarities between ischemic damage and AMS, HACE, and HAPE, it is reasonable to assume that RIPC might be protective and improve altitude tolerance. In studies addressing high-altitude/hypoxia tolerance, RIPC has been shown to decrease pulmonary arterial systolic pressure in normobaric hypoxia (13% O2) and at high altitude (4,342 m). Our own results indicate that RIPC transiently decreases the severity of AMS at 12% O2. Thus preliminary studies show some benefit, but clearly, further experiments to establish the efficacy and potential mechanism of RIPC are needed.
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Affiliation(s)
- Marc Moritz Berger
- Department of Anesthesiology, Perioperative and General Critical Care Medicine, Salzburg General Hospital, Paracelsus Medical University, Salzburg, Austria; Department of Anesthesiology, University of Heidelberg, Heidelberg, Germany;
| | - Franziska Macholz
- Department of Anesthesiology, Perioperative and General Critical Care Medicine, Salzburg General Hospital, Paracelsus Medical University, Salzburg, Austria
| | - Heimo Mairbäurl
- Department of Internal Medicine VII, Division of Sports Medicine, University of Heidelberg, Heidelberg, Germany; and Translational Lung Research Center Heidelberg, German Center for Lung Research, Heidelberg, Germany
| | - Peter Bärtsch
- Department of Internal Medicine VII, Division of Sports Medicine, University of Heidelberg, Heidelberg, Germany; and
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13
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Abstract
PURPOSE OF REVIEW The relationship of altitude and cold to cardiovascular risk is complex. Cold is hard to separate from altitude. This review highlights the latest information on cardiovascular disease associated with high altitude and cold; both represent unique clinical situations. RECENT FINDINGS Evolution and genetics are relevant to high altitude, with much new information available. Specific physiology explains some congenital heart disease at altitude. New reports of hematological changes associated with altitude and cold help clarify thrombosis, which is relevant to reports of very late in-stent thrombosis at altitude. Multiple cardiovascular risk factors are affected by altitude and cold, and an increased incidence of myocardial infarction occurs. There is new research on acute mountain sickness associated with inflammation with relevance for clinical study of pulmonary edema. Socioeconomics plays a part in altitude and cold effects on cardiovascular disease. In addition to acute disease, high altitude involves chronic mountain sickness with new knowledge of associated cardiovascular endothelial abnormalities. SUMMARY High altitude and cold involve acute disease, chronic disease, and public health issues. Continued research is essential to enable the best clinical management in this era of rapid worldwide travel.
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14
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Pre-existing cardiovascular conditions and high altitude travel. Travel Med Infect Dis 2014; 12:237-52. [DOI: 10.1016/j.tmaid.2014.02.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Revised: 02/09/2014] [Accepted: 02/19/2014] [Indexed: 12/28/2022]
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15
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Papamatheakis DG, Blood AB, Kim JH, Wilson SM. Antenatal hypoxia and pulmonary vascular function and remodeling. Curr Vasc Pharmacol 2014; 11:616-40. [PMID: 24063380 DOI: 10.2174/1570161111311050006] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 06/25/2012] [Accepted: 07/12/2012] [Indexed: 01/02/2023]
Abstract
This review provides evidence that antenatal hypoxia, which represents a significant and worldwide problem, causes prenatal programming of the lung. A general overview of lung development is provided along with some background regarding transcriptional and signaling systems of the lung. The review illustrates that antenatal hypoxic stress can induce a continuum of responses depending on the species examined. Fetuses and newborns of certain species and specific human populations are well acclimated to antenatal hypoxia. However, antenatal hypoxia causes pulmonary vascular disease in fetuses and newborns of most mammalian species and humans. Disease can range from mild pulmonary hypertension, to severe vascular remodeling and dangerous elevations in pressure. The timing, length, and magnitude of the intrauterine hypoxic stress are important to disease development, however there is also a genetic-environmental relationship that is not yet completely understood. Determining the origins of pulmonary vascular remodeling and pulmonary hypertension and their associated effects is a challenging task, but is necessary in order to develop targeted therapies for pulmonary hypertension in the newborn due to antenatal hypoxia that can both treat the symptoms and curtail or reverse disease progression.
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Affiliation(s)
- Demosthenes G Papamatheakis
- Center for Perinatal Biology, Loma Linda University School of Medicine, 11234 Anderson Street, Loma Linda, 92350 CA, USA.
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16
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Abstract
Altitude physiology began with Paul Bert in 1878. Chronic mountain sickness (CMS) was defined by Carlos Monge in the 1940s in the Peruvian Andes as consisting of excess polycythemia. Hurtado et al performed studies in the Peruvian Andes in the 1950s to 1960s which defined acclimatization in healthy altitude natives, including polycythemia, moderate pulmonary hypertension, and low systemic blood pressure (BP). Electrocardiographic changes of right ventricular hypertrophy (RVH) were noted. Acclimatization of newcomers to altitude involves hyperventilation stimulated by hypoxia and is usually benign. Acute mountain sickness (AMS) in travelers to altitude is characterized by hypoxia-induced anorexia, dyspnea, headache, insomnia, and nausea. The extremes of AMS are high-altitude cerebral edema and high-altitude pulmonary edema. The susceptible high-altitude resident can lose their tolerance to altitude and develop CMS, also referred to as Monge disease. The CMS includes extreme polycythemia, severe RVH, excess pulmonary hypertension, low systemic BP, arterial oxygen desaturation, and hypoventilation.
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Affiliation(s)
- Thomas F Whayne
- Division of Cardiovascular Medicine, Gill Heart Institute, University of Kentucky, Lexington, KY, USA
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17
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Scherrer U, Allemann Y, Rexhaj E, Rimoldi SF, Sartori C. Mechanisms and Drug Therapy of Pulmonary Hypertension at High Altitude. High Alt Med Biol 2013; 14:126-33. [DOI: 10.1089/ham.2013.1006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Affiliation(s)
- Urs Scherrer
- Swiss Cardiovascular Center Bern, University Hospital, Bern, Switzerland
- Facultad de Ciencias, Departamento de Biología, Universidad de Tarapacá, Arica, Chile
| | - Yves Allemann
- Swiss Cardiovascular Center Bern, University Hospital, Bern, Switzerland
| | - Emrush Rexhaj
- Swiss Cardiovascular Center Bern, University Hospital, Bern, Switzerland
| | - Stefano F. Rimoldi
- Swiss Cardiovascular Center Bern, University Hospital, Bern, Switzerland
| | - Claudio Sartori
- Department of Internal Medicine, CHUV, Lausanne, Switzerland
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18
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Beall CM. Human adaptability studies at high altitude: Research designs and major concepts during fifty years of discovery. Am J Hum Biol 2013; 25:141-7. [DOI: 10.1002/ajhb.22355] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 11/19/2012] [Indexed: 11/08/2022] Open
Affiliation(s)
- Cynthia M. Beall
- Department of Anthropology; Case Western Reserve University; Cleveland; Ohio; 44106-7125
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19
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Burtscher M, Gnaiger E, Burtscher J, Nachbauer W, Brugger A. Arnold Durig (1872-1961): life and work. An Austrian pioneer in exercise and high altitude physiology. High Alt Med Biol 2012; 13:224-31. [PMID: 22994523 DOI: 10.1089/ham.2012.1015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Arnold Durig (1872-1961) grew up in the Austrian mountains in the period when intense exploration of the Alps started. As an enthusiastic mountaineer, scientist, and physician, he became one of the pioneers exploring physiological and pathophysiological aspects of humans sojourning to high altitudes. At the beginning of the 20(th) century, Durig was one of the great physiologists whose knowledge covered the whole field of physiology. Durig founded a renowned School and his students spread all over the world. He stayed in close contact with many colleagues and famous scientists, such as Albert Einstein and Sigmund Freud. Although he was an extremely productive and acknowledged physiologist and teacher at that time, his work and life are not very well known at the beginning of the 3(rd) millennium, even by high altitude physiologists. Thus, this article provides an overview on Durig's life and work, highlighting the most important scientific studies he performed at moderate and high altitudes, in an attempt to provide a few links to the development of high altitude research in the late 19(th) and early 20(th) centuries, complemented by some comments from a current point of view.
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Affiliation(s)
- Martin Burtscher
- Leopold Franzens University and Medical University of Innsbruck, Innsbruck, Austria.
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20
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Scherrer U, Rimoldi SF, Rexhaj E, Stuber T, Duplain H, Garcin S, de Marchi SF, Nicod P, Germond M, Allemann Y, Sartori C. Systemic and Pulmonary Vascular Dysfunction in Children Conceived by Assisted Reproductive Technologies. Circulation 2012; 125:1890-6. [DOI: 10.1161/circulationaha.111.071183] [Citation(s) in RCA: 207] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background—
Assisted reproductive technology (ART) involves the manipulation of early embryos at a time when they may be particularly vulnerable to external disturbances. Environmental influences during the embryonic and fetal development influence the individual's susceptibility to cardiovascular disease, raising concerns about the potential consequences of ART on the long-term health of the offspring.
Methods and Results—
We assessed systemic (flow-mediated dilation of the brachial artery, pulse-wave velocity, and carotid intima-media thickness) and pulmonary (pulmonary artery pressure at high altitude by Doppler echocardiography) vascular function in 65 healthy children born after ART and 57 control children. Flow-mediated dilation of the brachial artery was 25% smaller in ART than in control children (6.7±1.6% versus 8.6±1.7%;
P
<0.0001), whereas endothelium-independent vasodilation was similar in the 2 groups. Carotid-femoral pulse-wave velocity was significantly (
P
<0.001) faster and carotid intima-media thickness was significantly (
P
<0.0001) greater in children conceived by ART than in control children. The systolic pulmonary artery pressure at high altitude (3450 m) was 30% higher (
P
<0.001) in ART than in control children. Vascular function was normal in children conceived naturally during hormonal stimulation of ovulation and in siblings of ART children who were conceived naturally.
Conclusions—
Healthy children conceived by ART display generalized vascular dysfunction. This problem does not appear to be related to parental factors but to the ART procedure itself.
Clinical Trial Registration—
URL:
www.clinicaltrials.gov
. Unique identifier: NCT00837642.
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Affiliation(s)
- Urs Scherrer
- From the Swiss Cardiovascular Center Bern, University Hospital, Bern, Switzerland (U.S., S.F.R., E.R., T.S., S.F.d.M., Y.A., C.S.); Facultad de Ciencias, Departamento de Biología, Universidad de Tarapacá, Arica, Chile (U.S.); Hirslanden Group, Lausanne, Switzerland (U.S., P.N.); Botnar Center for Extreme Medicine and Department of Internal Medicine, CHUV, Lausanne, Switzerland (H.D., S.G., C.S.); and Centre de Procréation Médicalement Assistée, Lausanne, Switzerland (M.G.)
| | - Stefano F. Rimoldi
- From the Swiss Cardiovascular Center Bern, University Hospital, Bern, Switzerland (U.S., S.F.R., E.R., T.S., S.F.d.M., Y.A., C.S.); Facultad de Ciencias, Departamento de Biología, Universidad de Tarapacá, Arica, Chile (U.S.); Hirslanden Group, Lausanne, Switzerland (U.S., P.N.); Botnar Center for Extreme Medicine and Department of Internal Medicine, CHUV, Lausanne, Switzerland (H.D., S.G., C.S.); and Centre de Procréation Médicalement Assistée, Lausanne, Switzerland (M.G.)
| | - Emrush Rexhaj
- From the Swiss Cardiovascular Center Bern, University Hospital, Bern, Switzerland (U.S., S.F.R., E.R., T.S., S.F.d.M., Y.A., C.S.); Facultad de Ciencias, Departamento de Biología, Universidad de Tarapacá, Arica, Chile (U.S.); Hirslanden Group, Lausanne, Switzerland (U.S., P.N.); Botnar Center for Extreme Medicine and Department of Internal Medicine, CHUV, Lausanne, Switzerland (H.D., S.G., C.S.); and Centre de Procréation Médicalement Assistée, Lausanne, Switzerland (M.G.)
| | - Thomas Stuber
- From the Swiss Cardiovascular Center Bern, University Hospital, Bern, Switzerland (U.S., S.F.R., E.R., T.S., S.F.d.M., Y.A., C.S.); Facultad de Ciencias, Departamento de Biología, Universidad de Tarapacá, Arica, Chile (U.S.); Hirslanden Group, Lausanne, Switzerland (U.S., P.N.); Botnar Center for Extreme Medicine and Department of Internal Medicine, CHUV, Lausanne, Switzerland (H.D., S.G., C.S.); and Centre de Procréation Médicalement Assistée, Lausanne, Switzerland (M.G.)
| | - Hervé Duplain
- From the Swiss Cardiovascular Center Bern, University Hospital, Bern, Switzerland (U.S., S.F.R., E.R., T.S., S.F.d.M., Y.A., C.S.); Facultad de Ciencias, Departamento de Biología, Universidad de Tarapacá, Arica, Chile (U.S.); Hirslanden Group, Lausanne, Switzerland (U.S., P.N.); Botnar Center for Extreme Medicine and Department of Internal Medicine, CHUV, Lausanne, Switzerland (H.D., S.G., C.S.); and Centre de Procréation Médicalement Assistée, Lausanne, Switzerland (M.G.)
| | - Sophie Garcin
- From the Swiss Cardiovascular Center Bern, University Hospital, Bern, Switzerland (U.S., S.F.R., E.R., T.S., S.F.d.M., Y.A., C.S.); Facultad de Ciencias, Departamento de Biología, Universidad de Tarapacá, Arica, Chile (U.S.); Hirslanden Group, Lausanne, Switzerland (U.S., P.N.); Botnar Center for Extreme Medicine and Department of Internal Medicine, CHUV, Lausanne, Switzerland (H.D., S.G., C.S.); and Centre de Procréation Médicalement Assistée, Lausanne, Switzerland (M.G.)
| | - Stefano F. de Marchi
- From the Swiss Cardiovascular Center Bern, University Hospital, Bern, Switzerland (U.S., S.F.R., E.R., T.S., S.F.d.M., Y.A., C.S.); Facultad de Ciencias, Departamento de Biología, Universidad de Tarapacá, Arica, Chile (U.S.); Hirslanden Group, Lausanne, Switzerland (U.S., P.N.); Botnar Center for Extreme Medicine and Department of Internal Medicine, CHUV, Lausanne, Switzerland (H.D., S.G., C.S.); and Centre de Procréation Médicalement Assistée, Lausanne, Switzerland (M.G.)
| | - Pascal Nicod
- From the Swiss Cardiovascular Center Bern, University Hospital, Bern, Switzerland (U.S., S.F.R., E.R., T.S., S.F.d.M., Y.A., C.S.); Facultad de Ciencias, Departamento de Biología, Universidad de Tarapacá, Arica, Chile (U.S.); Hirslanden Group, Lausanne, Switzerland (U.S., P.N.); Botnar Center for Extreme Medicine and Department of Internal Medicine, CHUV, Lausanne, Switzerland (H.D., S.G., C.S.); and Centre de Procréation Médicalement Assistée, Lausanne, Switzerland (M.G.)
| | - Marc Germond
- From the Swiss Cardiovascular Center Bern, University Hospital, Bern, Switzerland (U.S., S.F.R., E.R., T.S., S.F.d.M., Y.A., C.S.); Facultad de Ciencias, Departamento de Biología, Universidad de Tarapacá, Arica, Chile (U.S.); Hirslanden Group, Lausanne, Switzerland (U.S., P.N.); Botnar Center for Extreme Medicine and Department of Internal Medicine, CHUV, Lausanne, Switzerland (H.D., S.G., C.S.); and Centre de Procréation Médicalement Assistée, Lausanne, Switzerland (M.G.)
| | - Yves Allemann
- From the Swiss Cardiovascular Center Bern, University Hospital, Bern, Switzerland (U.S., S.F.R., E.R., T.S., S.F.d.M., Y.A., C.S.); Facultad de Ciencias, Departamento de Biología, Universidad de Tarapacá, Arica, Chile (U.S.); Hirslanden Group, Lausanne, Switzerland (U.S., P.N.); Botnar Center for Extreme Medicine and Department of Internal Medicine, CHUV, Lausanne, Switzerland (H.D., S.G., C.S.); and Centre de Procréation Médicalement Assistée, Lausanne, Switzerland (M.G.)
| | - Claudio Sartori
- From the Swiss Cardiovascular Center Bern, University Hospital, Bern, Switzerland (U.S., S.F.R., E.R., T.S., S.F.d.M., Y.A., C.S.); Facultad de Ciencias, Departamento de Biología, Universidad de Tarapacá, Arica, Chile (U.S.); Hirslanden Group, Lausanne, Switzerland (U.S., P.N.); Botnar Center for Extreme Medicine and Department of Internal Medicine, CHUV, Lausanne, Switzerland (H.D., S.G., C.S.); and Centre de Procréation Médicalement Assistée, Lausanne, Switzerland (M.G.)
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Wu YC, Wang YJ, Tseng GF. Ascorbic acid and α-tocopherol supplement starting prenatally enhances the resistance of nucleus tractus solitarius neurons to hypobaric hypoxic challenge. Brain Struct Funct 2011; 216:105-22. [PMID: 21287201 DOI: 10.1007/s00429-010-0300-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Accepted: 12/30/2010] [Indexed: 12/15/2022]
Abstract
Hypobaric hypoxia, encountered at high altitude, could result in severe consequences. Ascorbic acid (AA) and α-tocopherol (αTC), the two readily available over-the-counter antioxidants, are known to protect nervous tissue against oxidative stress. Here we study whether AA or αTC supplement starting prenatally protects animals against hypobaric hypoxic challenge at adulthood. Expressions of c-fos and the NR1 subunit of the N-methyl-D-aspartate receptors in the nucleus tractus solitarius (NTS) subserving cardiorespiratory functions were investigated. AA and αTC supplement reduced the number of c-fos immunoreactive neurons and intensity of NR1 expression in young and adult animals under normoxia. The treatment, in addition, attenuated the activation of NTS neurons, in terms of c-fos and NR1 expressions, and reduced the anxiety behaviors of adult rats subjected to hypobaric hypoxic challenge. Reduction of c-fos immunoreactive neurons was found concentrated in the chemoreceptor, baroreceptor, and tracheobronchial tree NTS subnuclei that receive corresponding afferents. The protective effect was not found in normal adult animals supplemented with AA or αTC a week before hypobaric hypoxic challenge. In short, prenatal and sustained AA or αTC supplement altered NTS substrate and ameliorated animals' reactions to hypobaric hypoxic insult, suggesting that this may be considered to protect animals from hypoxic insults from young to adult.
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Affiliation(s)
- Ya-Chieh Wu
- Institute of Anatomy and Cell Biology, College of Medicine, National Taiwan University, No. 1, Section 1, Jen-Ai Road, Taipei, Taiwan
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