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Marrow JP, Alshamali R, Edgett BA, Allwood MA, Cochrane KLS, Al-Sabbag S, Ayoub A, Ask K, Hare GMT, Brunt KR, Simpson JA. Cardiomyocyte crosstalk with endothelium modulates cardiac structure, function, and ischemia-reperfusion injury susceptibility through erythropoietin. Front Physiol 2024; 15:1397049. [PMID: 39011088 PMCID: PMC11246973 DOI: 10.3389/fphys.2024.1397049] [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: 03/06/2024] [Accepted: 06/03/2024] [Indexed: 07/17/2024] Open
Abstract
Erythropoietin (EPO) exerts non-canonical roles beyond erythropoiesis that are developmentally, structurally, and physiologically relevant for the heart as a paracrine factor. The role for paracrine EPO signalling and cellular crosstalk in the adult is uncertain. Here, we provided novel evidence showing cardiomyocyte restricted loss of function in Epo in adult mice induced hyper-compensatory increases in Epo expression by adjacent cardiac endothelial cells via HIF-2α independent mechanisms. These hearts showed concentric cellular hypertrophy, elevated contractility and relaxation, and greater resistance to ischemia-reperfusion injury. Voluntary exercise capacity compared to control hearts was improved independent of any changes to whole-body metabolism or blood O2 content or delivery (i.e., hematocrit). Our findings suggest cardiac EPO had a localized effect within the normoxic heart, which was regulated by cell-specific EPO-reciprocity between cardiomyocytes and endothelium. Within the heart, hyper-compensated endothelial Epo expression was accompanied by elevated Vegfr1 and Vegfb RNA, that upon pharmacological pan-inhibition of VEGF-VEGFR signaling, resulted in a paradoxical upregulation in whole-heart Epo. Thus, we provide the first evidence that a novel EPO-EPOR/VEGF-VEGFR axis exists to carefully mediate cardiac homeostasis via cardiomyocyte-endothelial EPO crosstalk.
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Affiliation(s)
- Jade P Marrow
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
- IMPART Investigator Team Canada, Guelph, ON, Canada
| | - Razan Alshamali
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
- IMPART Investigator Team Canada, Guelph, ON, Canada
| | - Brittany A Edgett
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
- IMPART Investigator Team Canada, Guelph, ON, Canada
- Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
| | - Melissa A Allwood
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
- IMPART Investigator Team Canada, Guelph, ON, Canada
| | - Kyla L S Cochrane
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
- IMPART Investigator Team Canada, Guelph, ON, Canada
| | - Sara Al-Sabbag
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Anmar Ayoub
- Firestone Institute for Respiratory Health, McMaster University, Hamilton, ON, Canada
| | - Kjetil Ask
- Firestone Institute for Respiratory Health, McMaster University, Hamilton, ON, Canada
| | - Gregory M T Hare
- IMPART Investigator Team Canada, Guelph, ON, Canada
- Department of Anesthesiology and Pain Medicine, St Michael's Hospital, University of Toronto, Toronto, ON, Canada
- Department of Physiology, University of Toronto, Toronto, ON, Canada
- Keenan Research Centre for Biomedical Science in the Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada
| | - Keith R Brunt
- IMPART Investigator Team Canada, Guelph, ON, Canada
- Department of Pharmacology, Dalhousie Medicine New Brunswick, Saint John, NB, Canada
| | - Jeremy A Simpson
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
- IMPART Investigator Team Canada, Guelph, ON, Canada
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2
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de Castro Nobre AC, Pimentel CF, do Rêgo GMS, Paludo GR, Pereira Neto GB, de Castro MB, Nitz N, Hecht M, Dallago B, Hagström L. Insights from the use of erythropoietin in experimental Chagas disease. Int J Parasitol Drugs Drug Resist 2022; 19:65-80. [PMID: 35772309 PMCID: PMC9253553 DOI: 10.1016/j.ijpddr.2022.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 05/26/2022] [Accepted: 05/31/2022] [Indexed: 11/23/2022]
Abstract
In addition to the long-established role in erythropoiesis, erythropoietin (Epo) has protective functions in a variety of tissues, including the heart. This is the most affected organ in chronic Chagas disease, caused by the protozoan Trypanosoma cruzi. Despite seven million people being infected with T. cruzi worldwide, there is no effective treatment preventing the disease progression to the chronic phase when the pathological involvement of the heart is often observed. Chronic chagasic cardiomyopathy has a wide variety of manifestations, like left ventricular systolic dysfunction, dilated cardiomyopathy, and heart failure. Since Epo may help maintain cardiac function by reducing myocardial necrosis, inflammation, and fibrosis, this study aimed to evaluate whether the Epo has positive effects on experimental Chagas disease. For that, we assessed the earlier (acute phase) and also the later (chronic phase) use of Epo in infected C57BL/6 mice. Blood cell count, biochemical parameters, parasitic load, and echocardiography data were evaluated. In addition, histopathological analysis was carried out. Our data showed that Epo had no trypanocide effect nor did it modify the production of anti-T. cruzi antibodies. Epo-treated groups exhibited parasitic burden much lower in the heart compared to blood. No pattern of hematological changes was observed combining infection with treatment with Epo. Chronic Epo administration reduced CK-MB serum activity from d0 to d180, irrespectively of T. cruzi infection. Likewise, echocardiography and histological results indicate that Epo treatment is more effective in the chronic phase of experimental Chagas disease. Since treatment is one of the greatest challenges of Chagas disease, alternative therapies should be investigated, including Epo combined with benznidazole.
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Affiliation(s)
| | - Carlos Fernando Pimentel
- Interdisciplinary Laboratory of Biosciences, Faculty of Medicine, University of Brasilia, Brasília, Brazil
| | - George Magno Sousa do Rêgo
- Laboratory of Veterinary Clinical Pathology, Faculty of Agronomy and Veterinary Medicine, University of Brasília, Brasília, Brazil
| | - Giane Regina Paludo
- Laboratory of Veterinary Clinical Pathology, Faculty of Agronomy and Veterinary Medicine, University of Brasília, Brasília, Brazil
| | - Glaucia Bueno Pereira Neto
- Veterinary Hospital, Faculty of Agronomy and Veterinary Medicine, University of Brasília, Brasília, Brazil
| | - Márcio Botelho de Castro
- Laboratory of Veterinary Pathology, Faculty of Agronomy and Veterinary Medicine, University of Brasília, Brasília, Brazil
| | - Nadjar Nitz
- Interdisciplinary Laboratory of Biosciences, Faculty of Medicine, University of Brasilia, Brasília, Brazil
| | - Mariana Hecht
- Interdisciplinary Laboratory of Biosciences, Faculty of Medicine, University of Brasilia, Brasília, Brazil
| | - Bruno Dallago
- Interdisciplinary Laboratory of Biosciences, Faculty of Medicine, University of Brasilia, Brasília, Brazil; Veterinary Hospital, Faculty of Agronomy and Veterinary Medicine, University of Brasília, Brasília, Brazil
| | - Luciana Hagström
- Interdisciplinary Laboratory of Biosciences, Faculty of Medicine, University of Brasilia, Brasília, Brazil; Faculty of Physical Education, University of Brasília, Brasília, Brazil.
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3
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Jeton F, Perrin-Terrin AS, Yegen CH, Marchant D, Richalet JP, Pichon A, Boncoeur E, Bodineau L, Voituron N. In Transgenic Erythropoietin Deficient Mice, an Increase in Respiratory Response to Hypercapnia Parallels Abnormal Distribution of CO 2/H +-Activated Cells in the Medulla Oblongata. Front Physiol 2022; 13:850418. [PMID: 35514353 PMCID: PMC9061944 DOI: 10.3389/fphys.2022.850418] [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] [Received: 01/07/2022] [Accepted: 03/21/2022] [Indexed: 12/03/2022] Open
Abstract
Erythropoietin (Epo) and its receptor are expressed in central respiratory areas. We hypothesized that chronic Epo deficiency alters functioning of central respiratory areas and thus the respiratory adaptation to hypercapnia. The hypercapnic ventilatory response (HcVR) was evaluated by whole body plethysmography in wild type (WT) and Epo deficient (Epo-TAgh) adult male mice under 4%CO2. Epo-TAgh mice showed a larger HcVR than WT mice because of an increase in both respiratory frequency and tidal volume, whereas WT mice only increased their tidal volume. A functional histological approach revealed changes in CO2/H+-activated cells between Epo-TAgh and WT mice. First, Epo-TAgh mice showed a smaller increase under hypercapnia in c-FOS-positive number of cells in the retrotrapezoid nucleus/parafacial respiratory group than WT, and this, independently of changes in the number of PHOX2B-expressing cells. Second, we did not observe in Epo-TAgh mice the hypercapnic increase in c-FOS-positive number of cells in the nucleus of the solitary tract present in WT mice. Finally, whereas hypercapnia did not induce an increase in the c-FOS-positive number of cells in medullary raphe nuclei in WT mice, chronic Epo deficiency leads to raphe pallidus and magnus nuclei activation by hyperacpnia, with a significant part of c-FOS positive cells displaying an immunoreactivity for serotonin in the raphe pallidus nucleus. All of these results suggest that chronic Epo-deficiency affects both the pattern of ventilatory response to hypercapnia and associated medullary respiratory network at adult stage with an increase in the sensitivity of 5-HT and non-5-HT neurons of the raphe medullary nuclei leading to stimulation of fR for moderate level of CO2.
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Affiliation(s)
- Florine Jeton
- Laboratoire "Hypoxie et Poumons", UMR INSERM U1272, Université Paris 13, UFR SMBH, Bobigny, France.,Laboratory of Excellence (Labex) GR-Ex, PRES Sorbonne Paris Cité, Paris, France
| | - Anne-Sophie Perrin-Terrin
- Laboratoire "Hypoxie et Poumons", UMR INSERM U1272, Université Paris 13, UFR SMBH, Bobigny, France.,Inserm, UMR_S1158 Neurophysiologie Respiratoire Expérimentale et Clinique, Sorbonne Université, Paris, France
| | - Celine-Hivda Yegen
- Laboratoire "Hypoxie et Poumons", UMR INSERM U1272, Université Paris 13, UFR SMBH, Bobigny, France
| | - Dominique Marchant
- Laboratoire "Hypoxie et Poumons", UMR INSERM U1272, Université Paris 13, UFR SMBH, Bobigny, France
| | - Jean-Paul Richalet
- Laboratoire "Hypoxie et Poumons", UMR INSERM U1272, Université Paris 13, UFR SMBH, Bobigny, France.,Laboratory of Excellence (Labex) GR-Ex, PRES Sorbonne Paris Cité, Paris, France
| | - Aurélien Pichon
- Laboratoire "Hypoxie et Poumons", UMR INSERM U1272, Université Paris 13, UFR SMBH, Bobigny, France.,Laboratory of Excellence (Labex) GR-Ex, PRES Sorbonne Paris Cité, Paris, France
| | - Emilie Boncoeur
- Laboratoire "Hypoxie et Poumons", UMR INSERM U1272, Université Paris 13, UFR SMBH, Bobigny, France
| | - Laurence Bodineau
- Inserm, UMR_S1158 Neurophysiologie Respiratoire Expérimentale et Clinique, Sorbonne Université, Paris, France
| | - Nicolas Voituron
- Laboratoire "Hypoxie et Poumons", UMR INSERM U1272, Université Paris 13, UFR SMBH, Bobigny, France.,Laboratory of Excellence (Labex) GR-Ex, PRES Sorbonne Paris Cité, Paris, France
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4
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Yang Y, Gao C, Yang T, Sha Y, Cai Y, Wang X, Yang Q, Liu C, Wang B, Zhao S. Vascular characteristics and expression of hypoxia genes in Tibetan pigs' hearts. Vet Med Sci 2021; 8:177-186. [PMID: 34561963 PMCID: PMC8788992 DOI: 10.1002/vms3.639] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Background Tibetan pigs have exhibited unique characteristics from low‐altitudes pigs and adapted well to the Qinghai‐Tibet Plateau. Objectives The current study was undertaken to investigate the hypoxic adaptation of heart in Tibetan pigs. Methods The hearts of Tibetan pigs and Landrace pigs raised at high or low altitudes were compared using 3D casting technology, scanning electron microscopy and real‐time quantitative PCR (qRT‐PCR). Results We found that the ratio of the major axis to the minor axis and the density of the heart were significantly higher in Tibetan pigs than in Landrace pigs (p < 0.05). Tibetan pigs had larger diameters and higher densities of arterioles than Landrace pigs (p < 0.05), and these features have a similar variation with the expression of vascular endothelial growth factor (VEGF). The cardiac expression levels of hypoxia‐inducible factor‐1α (HIF‐1α) and endothelial nitric oxide synthase (eNOS) were significantly higher in pigs reared at high altitudes than in those reared at low altitudes (p < 0.05). In contrast, Egl nine homolog 1 (EGLN1) had the opposite trend with respect to HIF‐1α and eNOS and was related to red blood cell (RBC) counts. Notably, the expressions of erythropoietin (EPO) and endothelial PAS domain‐containing protein 1 (EPAS1) were significantly higher in Landrace pigs kept at high altitudes than in the others (p < 0.05) and were associated with haemoglobin. Conclusions These findings show that the regulation of the heart function of Tibetan pigs in a hypoxic environment is manifested at various levels to ensure the circulation of blood under extreme environmental conditions.
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Affiliation(s)
- Yanan Yang
- College of Animal Science & Technology, Gansu Agricultural University, Lanzhou, P.R. China
| | - Caixia Gao
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, P.R. China
| | - Tianliang Yang
- College of Animal Science & Technology, Gansu Agricultural University, Lanzhou, P.R. China
| | - Yuzhu Sha
- College of Animal Science & Technology, Gansu Agricultural University, Lanzhou, P.R. China
| | - Yuan Cai
- College of Animal Science & Technology, Gansu Agricultural University, Lanzhou, P.R. China
| | - Xinrong Wang
- College of Animal Science & Technology, Gansu Agricultural University, Lanzhou, P.R. China
| | - Qiaoli Yang
- College of Animal Science & Technology, Gansu Agricultural University, Lanzhou, P.R. China
| | - Chengze Liu
- College of Animal Science & Technology, Gansu Agricultural University, Lanzhou, P.R. China
| | - Biao Wang
- College of Animal Science & Technology, Gansu Agricultural University, Lanzhou, P.R. China
| | - Shengguo Zhao
- College of Animal Science & Technology, Gansu Agricultural University, Lanzhou, P.R. China
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5
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Cytoprotective effects of erythropoietin: What about the lung? Biomed Pharmacother 2021; 139:111547. [PMID: 33831836 DOI: 10.1016/j.biopha.2021.111547] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 03/17/2021] [Accepted: 03/23/2021] [Indexed: 02/07/2023] Open
Abstract
Erythropoietin (Epo) is a pleiotropic cytokine, essential for erythropoiesis. Epo and its receptor (Epo-R) are produced by several tissues and it is now admitted that Epo displays other physiological functions than red blood cell synthesis. Indeed, Epo provides cytoprotective effects, which consist in prevention or fight against pathological processes. This perspective article reviews the various protective effects of Epo in several organs and tries to give a proof of concept about its effects in the lung. The tissue-protective effects of Epo could be a promising approach to limit the symptoms of acute and chronic lung diseases.
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6
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Yegen CH, Haine L, Marchant D, Boncoeur E, Voituron N. [Characterisation of the protective role of erythropoetin in a murine model of acute lung injury]. Rev Mal Respir 2020; 37:193-196. [PMID: 32146057 DOI: 10.1016/j.rmr.2020.02.005] [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: 01/12/2020] [Accepted: 01/12/2020] [Indexed: 11/29/2022]
Abstract
In addition to its role in erythropoiesis, erythropoietin (Epo) plays a role in tissue protection, which includes cardioprotective, nephroprotective and neuroprotective effects. The presence of Epo and its receptor (Epo-R) in pulmonary tissue also suggests a cytoprotective effect of Epo in the lung. Our project aims to document this role in a murine model under-expressing Epo. The obtained results will lead to a better understanding of the cytoprotective effects of Epo and will also give an appreciation of its beneficial effects in cases of lung injury.
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Affiliation(s)
- C H Yegen
- Laboratoire Hypoxie et Poumon, UMR U1272 Inserm-Université Paris 13, 1, rue de Chablis, 93017 Bobigny cedex, France
| | - L Haine
- Laboratoire Hypoxie et Poumon, UMR U1272 Inserm-Université Paris 13, 1, rue de Chablis, 93017 Bobigny cedex, France
| | - D Marchant
- Laboratoire Hypoxie et Poumon, UMR U1272 Inserm-Université Paris 13, 1, rue de Chablis, 93017 Bobigny cedex, France
| | - E Boncoeur
- Laboratoire Hypoxie et Poumon, UMR U1272 Inserm-Université Paris 13, 1, rue de Chablis, 93017 Bobigny cedex, France.
| | - N Voituron
- Laboratoire Hypoxie et Poumon, UMR U1272 Inserm-Université Paris 13, 1, rue de Chablis, 93017 Bobigny cedex, France.
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7
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Zhou Y, Ouyang N, Liu L, Tian J, Huang X, Lu T. An EGLN1 mutation may regulate hypoxic response in cyanotic congenital heart disease through the PHD2/HIF-1A pathway. Genes Dis 2019; 6:35-42. [PMID: 30906831 PMCID: PMC6411777 DOI: 10.1016/j.gendis.2018.03.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 03/06/2018] [Indexed: 12/21/2022] Open
Abstract
Cyanotic congenital heart disease (CCHD), a term describing the most severe congenital heart diseases are characterized by the anatomic malformation of a right to left shunt. Although the incidence of CCHD are far less than the that of congenital heart diseases (CHD), patients with CCHD always present severe clinical features such as hypoxia, dyspnea, and heart failure. Chronic hypoxia induces hypoxemia that significantly contributes to poor prognosis in CCHD. Current studies have demonstrated that the prolyl-4-hydroxylase2 (PHD2, encoded by EGLN1)/hypoxia-inducible factor-1A (HIF-1A) pathway is a key regulator of hypoxic response. Thus, we aim to assess the associations of single polymorphisms (SNPs) of the EGLN1 gene and hypoxic response in CCHD. A missense variant of EGLN1 c.380G>C (rs1209790) was found in 46 patients (46/126), with lower hypoxia incidence and higher rate of collateral vessel formation, compared with the wild type (P < 0.05). In vitro experiments, during hypoxia, EGLN1 mutation reduced EGLN1 expression compared with the wild type, with higher HIF-1A, VEGF and EPO expression levels in the mutant. No difference in HK1 expression was observed between the mutant and wild type. CCHD patients with c.380G>C showed improved response to hypoxia compared with the wild-type counterparts. The EGLN1 c.380G>C mutation improves hypoxic response through the PHD2/HIF-1A pathway, which may provide a molecular mechanism for hypoxic response in CCHD. The effects of the EGLN1 c.380G>C mutation on CCHD prognosis deserve further investigation.
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Affiliation(s)
- Yuanlin Zhou
- Department of Cardiology, Children's Hospital of Chongqing Medical University, Chongqing, PR China
- Key Laboratory of Developmental Disease in Childhood (Chongqing Medical University), Ministry of Education, Chongqing, PR China
- Key Laboratory of Pediatrics in Chongqing, Chongqing, PR China
- Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, PR China
| | - Na Ouyang
- Department of Cardiology, Children's Hospital of Chongqing Medical University, Chongqing, PR China
- Key Laboratory of Developmental Disease in Childhood (Chongqing Medical University), Ministry of Education, Chongqing, PR China
- Key Laboratory of Pediatrics in Chongqing, Chongqing, PR China
- Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, PR China
| | - Lingjuan Liu
- Department of Cardiology, Children's Hospital of Chongqing Medical University, Chongqing, PR China
- Key Laboratory of Developmental Disease in Childhood (Chongqing Medical University), Ministry of Education, Chongqing, PR China
- Key Laboratory of Pediatrics in Chongqing, Chongqing, PR China
- Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, PR China
| | - Jie Tian
- Department of Cardiology, Children's Hospital of Chongqing Medical University, Chongqing, PR China
- Key Laboratory of Developmental Disease in Childhood (Chongqing Medical University), Ministry of Education, Chongqing, PR China
- Key Laboratory of Pediatrics in Chongqing, Chongqing, PR China
- Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, PR China
| | - Xupei Huang
- Department of Biomedical Science, Charlie E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, USA
| | - Tiewei Lu
- Department of Cardiology, Children's Hospital of Chongqing Medical University, Chongqing, PR China
- Key Laboratory of Developmental Disease in Childhood (Chongqing Medical University), Ministry of Education, Chongqing, PR China
- Key Laboratory of Pediatrics in Chongqing, Chongqing, PR China
- Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, PR China
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Andrade DC, Haine L, Toledo C, Diaz HS, Quintanilla RA, Marcus NJ, Iturriaga R, Richalet JP, Voituron N, Del Rio R. Ventilatory and Autonomic Regulation in Sleep Apnea Syndrome: A Potential Protective Role for Erythropoietin? Front Physiol 2018; 9:1440. [PMID: 30374309 PMCID: PMC6196773 DOI: 10.3389/fphys.2018.01440] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 09/21/2018] [Indexed: 12/20/2022] Open
Abstract
Obstructive sleep apnea (OSA) is the most common form of sleep disordered breathing and is associated with wide array of cardiovascular morbidities. It has been proposed that during OSA, the respiratory control center (RCC) is affected by exaggerated afferent signals coming from peripheral/central chemoreceptors which leads to ventilatory instability and may perpetuate apnea generation. Treatments focused on decreasing hyperactivity of peripheral/central chemoreceptors may be useful to improving ventilatory instability in OSA patients. Previous studies indicate that oxidative stress and inflammation are key players in the increased peripheral/central chemoreflex drive associated with OSA. Recent data suggest that erythropoietin (Epo) could also be involved in modulating chemoreflex activity as functional Epo receptors are constitutively expressed in peripheral and central chemoreceptors cells. Additionally, there is some evidence that Epo has anti-oxidant/anti-inflammatory effects. Accordingly, we propose that Epo treatment during OSA may reduce enhanced peripheral/central chemoreflex drive and normalize the activity of the RCC which in turn may help to abrogate ventilatory instability. In this perspective article we discuss the potential beneficial effects of Epo administration on ventilatory regulation in the setting of OSA.
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Affiliation(s)
- David C Andrade
- Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile.,Centro de Investigación en Fisiología del Ejercicio, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
| | - Liasmine Haine
- Laboratoire Hypoxie and Poumon - EA2363, Université Paris 13, Paris, France
| | - Camilo Toledo
- Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile.,Centro de Envejecimiento y Regeneración (CARE), Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Hugo S Diaz
- Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile.,Centro de Investigación Biomédica, Universidad Autónoma de Chile, Santiago, Chile
| | | | - Noah J Marcus
- Department of Physiology and Pharmacology, Des Moines University, Des Moines, IA, United States
| | - Rodrigo Iturriaga
- Laboratorio de Neurobiología, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jean-Paul Richalet
- Laboratoire Hypoxie and Poumon - EA2363, Université Paris 13, Paris, France
| | - Nicolas Voituron
- Laboratoire Hypoxie and Poumon - EA2363, Université Paris 13, Paris, France
| | - Rodrigo Del Rio
- Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile.,Centro de Envejecimiento y Regeneración (CARE), Pontificia Universidad Católica de Chile, Santiago, Chile.,Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, Punta Arenas, Chile
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9
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Jeton F, Soliz J, Marchant D, Joseph V, Richalet JP, Pichon A, Voituron N. Increased ventilation in female erythropoietin-deficient mouse line is not progesterone and estrous stage-dependent. Respir Physiol Neurobiol 2017; 245:98-104. [PMID: 28735074 DOI: 10.1016/j.resp.2017.07.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 07/05/2017] [Indexed: 01/21/2023]
Abstract
Previous studies suggest that chronic erythropoietin (Epo) deficiency in male mice does not alter normoxic/hypoxic ventilation. As effects of Epo are sex specific and as progesterone could be a respiratory stimulant, we evaluated the impact of Epo deficiency and its possible interaction with progesterone in ventilatory control in female mice during estrous cycle phases. Compared to wild type (WT) animals, Epo-TAgh female mice exhibited higher ventilation in hypoxia. However, when data were separated into luteal and follicular phases of the estrous cycle, basal ventilation and hypoxic ventilation were not different in both mice strains. As progesterone is known to be a potent respiratory stimulant, additional experiments were performed to elucidate its role. Interestingly, after mifepristone treatment, HVR was not modified in WT and Epo-TAgh mice, showing that the ventilatory stimulation observed in females was not directly mediated by progesterone. We conclude that Epo-TAgh female mice show no estrous stage-dependent increase of ventilatory control and progesterone independent response to hypoxia.
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Affiliation(s)
- Florine Jeton
- Université Paris 13, Sorbonne Paris Cité, UFR SMBH, Laboratoire Hypoxie et poumons, EA 2363, 93017 Bobigny, France; Laboratory of Excellence (Labex) GR-Ex, PRES Sorbonne Paris Cité, France
| | - Jorge Soliz
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Quebec, QC, Canada
| | - Dominique Marchant
- Université Paris 13, Sorbonne Paris Cité, UFR SMBH, Laboratoire Hypoxie et poumons, EA 2363, 93017 Bobigny, France
| | - Vincent Joseph
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Quebec, QC, Canada
| | - Jean-Paul Richalet
- Université Paris 13, Sorbonne Paris Cité, UFR SMBH, Laboratoire Hypoxie et poumons, EA 2363, 93017 Bobigny, France; Laboratory of Excellence (Labex) GR-Ex, PRES Sorbonne Paris Cité, France
| | - Aurélien Pichon
- Université Paris 13, Sorbonne Paris Cité, UFR SMBH, Laboratoire Hypoxie et poumons, EA 2363, 93017 Bobigny, France; Laboratory of Excellence (Labex) GR-Ex, PRES Sorbonne Paris Cité, France
| | - Nicolas Voituron
- Université Paris 13, Sorbonne Paris Cité, UFR SMBH, Laboratoire Hypoxie et poumons, EA 2363, 93017 Bobigny, France; Laboratory of Excellence (Labex) GR-Ex, PRES Sorbonne Paris Cité, France.
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Guo L, Wang Y, Liang S, Lin G, Chen S, Yang G. Tissue-overlapping response of half-smooth tongue sole (Cynoglossus semilaevis) to thermostressing based on transcriptome profiles. Gene 2016; 586:97-104. [DOI: 10.1016/j.gene.2016.04.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 02/25/2016] [Accepted: 04/07/2016] [Indexed: 01/20/2023]
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11
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Pichon A, Jeton F, El Hasnaoui-Saadani R, Hagström L, Launay T, Beaudry M, Marchant D, Quidu P, Macarlupu JL, Favret F, Richalet JP, Voituron N. Erythropoietin and the use of a transgenic model of erythropoietin-deficient mice. HYPOXIA 2016; 4:29-39. [PMID: 27800506 PMCID: PMC5085313 DOI: 10.2147/hp.s83540] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Despite its well-known role in red blood cell production, it is now accepted that erythropoietin (Epo) has other physiological functions. Epo and its receptors are expressed in many tissues, such as the brain and heart. The presence of Epo/Epo receptors in these organs suggests other roles than those usually assigned to this protein. Thus, the aim of this review is to describe the effects of Epo deficiency on adaptation to normoxic and hypoxic environments and to suggest a key role of Epo on main physiological adaptive functions. Our original model of Epo-deficient (Epo-TAgh) mice allowed us to improve our knowledge of the possible role of Epo in O2 homeostasis. The use of anemic transgenic mice revealed Epo as a crucial component of adaptation to hypoxia. Epo-TAgh mice survive well in hypoxic conditions despite low hematocrit. Furthermore, Epo plays a key role in neural control of ventilatory acclimatization and response to hypoxia, in deformability of red blood cells, in cerebral and cardiac angiogenesis, and in neuro- and cardioprotection.
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Affiliation(s)
- Aurélien Pichon
- Laboratory "Hypoxia and Lung" EA 2363, University Paris 13, Sorbonne Paris Cité, Bobigny Cedex; Laboratory of Excellence GR-Ex, Paris; Laboratory MOVE EA 6314, FSS, Poitiers University, Poitiers, France
| | - Florine Jeton
- Laboratory "Hypoxia and Lung" EA 2363, University Paris 13, Sorbonne Paris Cité, Bobigny Cedex; Laboratory of Excellence GR-Ex, Paris
| | | | - Luciana Hagström
- Laboratório Interdisciplinar de Biociências, Universidade de Brasília, Brasília, Brazil
| | - Thierry Launay
- Unité de Biologie Intégrative des Adaptations à l'Exercice, University Paris Saclay and Genopole , University Sorbonne-Paris-Cité, Paris, France
| | - Michèle Beaudry
- Laboratory "Hypoxia and Lung" EA 2363, University Paris 13, Sorbonne Paris Cité, Bobigny Cedex
| | - Dominique Marchant
- Laboratory "Hypoxia and Lung" EA 2363, University Paris 13, Sorbonne Paris Cité, Bobigny Cedex
| | - Patricia Quidu
- Laboratory "Hypoxia and Lung" EA 2363, University Paris 13, Sorbonne Paris Cité, Bobigny Cedex
| | - Jose-Luis Macarlupu
- High Altitude Unit, Laboratories for Research and Development, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Fabrice Favret
- Laboratory "Mitochondrie, Stress Oxydant et Protection Musculaire" EA 3072, University of Strasbourg, Strasbourg, France
| | - Jean-Paul Richalet
- Laboratory "Hypoxia and Lung" EA 2363, University Paris 13, Sorbonne Paris Cité, Bobigny Cedex; Laboratory of Excellence GR-Ex, Paris
| | - Nicolas Voituron
- Laboratory "Hypoxia and Lung" EA 2363, University Paris 13, Sorbonne Paris Cité, Bobigny Cedex; Laboratory of Excellence GR-Ex, Paris
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Charytan DM, Fishbane S, Malyszko J, McCullough PA, Goldsmith D. Cardiorenal Syndrome and the Role of the Bone-Mineral Axis and Anemia. Am J Kidney Dis 2015; 66:196-205. [PMID: 25727384 PMCID: PMC4516683 DOI: 10.1053/j.ajkd.2014.12.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 12/09/2014] [Indexed: 12/12/2022]
Abstract
The association between chronic kidney disease (CKD) and cardiovascular disease (CVD) is well established, and there is mounting evidence of interorgan cross talk that may accelerate pathologic processes and the progression of organ dysfunction in both systems. This process, termed cardiorenal syndrome (CRS) by the Acute Dialysis Quality Initiative, is considered a major health problem: patients with CKD and CVD are at much higher risk of mortality than patients with either condition alone. To date, the majority of CRS research has focused on neurohormonal mechanisms and hemodynamic alterations. However, mounting evidence suggests that abnormalities in the normal pathophysiology of the bone-mineral axis, iron, and erythropoietin play a role in accelerating CKD and CVD. The goal of this article is to review the role and interrelated effects of the bone-mineral axis and anemia in the pathogenesis of chronic CRS.
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Affiliation(s)
| | - Steven Fishbane
- Division of Kidney Diseases and Hypertension, North Shore University Hospital and Long Island Jewish Medical Center, Great Neck, NY
| | - Jolanta Malyszko
- 2nd Department of Nephrology, Medical University, Bialystok, Poland
| | - Peter A McCullough
- Baylor University Medical Center, Baylor Heart and Vascular Institute, Baylor Jack and Jane Hamilton Heart and Vascular Hospital, Dallas; The Heart Hospital, Plano, TX
| | - David Goldsmith
- Department of Nephrology, King's Health Partners Academic Health Sciences Centre, London, United Kingdom
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13
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Espinoza JR, Alvarez G, León-Velarde F, Preciado HFJ, Macarlupu JL, Rivera-Ch M, Rodriguez J, Favier J, Gimenez-Roqueplo AP, Richalet JP. Vascular endothelial growth factor-A is associated with chronic mountain sickness in the Andean population. High Alt Med Biol 2015; 15:146-54. [PMID: 24971768 DOI: 10.1089/ham.2013.1121] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
A study of chronic mountain sickness (CMS) with a candidate gene--vascular endothelial growth factor A (VEGFA)--was carried out in a Peruvian population living at high altitude in Cerro de Pasco (4380 m). The study was performed by genotyping of 11 tag SNPs encompassing 2.2 kb of region of VEGFA gene in patients with a diagnosis of CMS (n = 131; 49.1 ± 12.7 years old) and unrelated healthy controls (n = 84; 47.2 ± 13.4 years old). The VEGFA tag SNP rs3025033 was found associated with CMS (p < 0.05), individuals with AG genotype have 2.5 more risk of CMS compared to those with GG genotype (p < 0.02; OR, 2.54; 95% CI: 1.10-5.88). Pairwise Fst and Nei's distance indicate genetic differentiation between Cerro de Pasco population and HapMap3 population (Fst > 0.36, p < 0.01), suggesting selection is operating on the VEGF gene. Our results suggest that VEGFA is associated with CMS in long-term residents at high altitude in the Peruvian Andes.
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Affiliation(s)
- Jose R Espinoza
- 1 Molecular Biotechnology Unit, Laboratories for Research and Development (LID), Universidad Peruana Cayetano Heredia , Peru
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Qin C, Zhou S, Xiao Y, Chen L. Erythropoietin enhances mitochondrial biogenesis in cardiomyocytes exposed to chronic hypoxia through Akt/eNOS signalling pathway. Cell Biol Int 2014; 38:335-42. [PMID: 24436050 DOI: 10.1002/cbin.10205] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 10/27/2013] [Indexed: 12/15/2022]
Abstract
Adaptation of cardiomyocytes to chronic hypoxia in cyanotic patients remains unclear. Mitochondrial biogenesis is enhanced in myocardium from cyanotic patients, which is possibly an adaptive response. Erythropoietin (EPO) in blood and its receptor (EPOR) on cardiomyocytes are upregulated by chronic hypoxia, suggesting that EPO-EPOR interaction is increased, which is inferred to positively regulate mitochondrial biogenesis through protein kinase B (Akt)/endothelial nitric oxide synthase (eNOS) signalling pathway. H9c2 cardiomyocytes were exposed to hypoxia (1% O(2)) for 1 week and treated with different doses of recombinant human erythropoietin (rhEPO). Mitochondrial number, mitochondrial DNA (mtDNA) copy number and peroxisome proliferator activated receptor gamma coactivator alpha (PGC-1α) mRNA expression increased in a dose-dependent manner induced by rhEPO. Akt and eNOS were significantly phosphorylated by rhEPO. Both blocking Akt with Wortmannin and silencing eNOS expression with shRNA plasmid decreased the mtDNA copy number and PGC-1α mRNA expression induced by rhEPO. Blocking Akt was associated with the decreased phosphorylation of Akt and eNOS. RNA interference led to a reduction in the total and phosphorylated proteins of eNOS. Thus EPO enhances mitochondrial biogenesis in cardiomyocytes exposed to chronic hypoxia, at least partly through Akt/eNOS signalling, which might be an adaptive mechanism of cardiomyocytes associated with the increased EPO-EPOR interaction in patients with cyanotic congenital heart disease (CCHD).
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Affiliation(s)
- Chuan Qin
- Department of Cardiovascular Surgery, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
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