1
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Maiorca F, Lombardi L, Marrapodi R, Pallucci D, Sabetta A, Zingaropoli MA, Perri V, Flego D, Romiti GF, Corica B, Miglionico M, Russo G, Pasculli P, Ciardi MR, Mastroianni CM, Ruberto F, Pugliese F, Pulcinelli F, Raparelli V, Cangemi R, Visentini M, Basili S, Stefanini L. Breakthrough infections after COVID-19 vaccinations do not elicit platelet hyperactivation and are associated with high platelet-lymphocyte and low platelet-neutrophil aggregates. Res Pract Thromb Haemost 2023; 7:102262. [PMID: 38193050 PMCID: PMC10772876 DOI: 10.1016/j.rpth.2023.102262] [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: 05/08/2023] [Revised: 10/25/2023] [Accepted: 10/29/2023] [Indexed: 01/10/2024] Open
Abstract
Background Severe COVID-19 is associated with an excessive immunothrombotic response and thromboinflammatory complications. Vaccinations effectively reduce the risk of severe clinical outcomes in patients with COVID-19, but their impact on platelet activation and immunothrombosis during breakthrough infections is not known. Objectives To investigate how preemptive vaccinations modify the platelet-immune crosstalk during COVID-19 infections. Methods Cross-sectional flow cytometry study of the phenotype and interactions of platelets circulating in vaccinated (n = 21) and unvaccinated patients with COVID-19, either admitted to the intensive care unit (ICU, n = 36) or not (non-ICU, n = 38), in comparison to matched SARS-CoV-2-negative patients (n = 48), was performed. Results In the circulation of unvaccinated non-ICU patients with COVID-19, we detected hyperactive and hyperresponsive platelets and platelet aggregates with adaptive and innate immune cells. In unvaccinated ICU patients with COVID-19, most of whom had severe acute respiratory distress syndrome, platelets had high P-selectin and phosphatidylserine exposure but low capacity to activate integrin αIIbβ3, dysfunctional mitochondria, and reduced surface glycoproteins. In addition, in the circulation of ICU patients, we detected microthrombi and platelet aggregates with innate, but not with adaptive, immune cells. In vaccinated patients with COVID-19, who had no acute respiratory distress syndrome, platelets had surface receptor levels comparable to those in controls and did not form microthrombi or platelet-granulocyte aggregates but aggregated avidly with adaptive immune cells. Conclusion Our study provides evidence that vaccinated patients with COVID-19 are not associated with platelet hyperactivation and are characterized by platelet-leukocyte aggregates that foster immune protection but not excessive immunothrombosis. These findings advocate for the importance of vaccination in preventing severe COVID-19.
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Affiliation(s)
- Francesca Maiorca
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Ludovica Lombardi
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Ramona Marrapodi
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Davide Pallucci
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Annamaria Sabetta
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | | | - Valentina Perri
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Davide Flego
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Giulio Francesco Romiti
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Bernadette Corica
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Marzia Miglionico
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Gianluca Russo
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Patrizia Pasculli
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Maria Rosa Ciardi
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Claudio M. Mastroianni
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Franco Ruberto
- Department of Specialist Surgery and Organ Transplantation “Paride Stefanini,” Sapienza University of Rome, Rome, Italy
| | - Francesco Pugliese
- Department of Specialist Surgery and Organ Transplantation “Paride Stefanini,” Sapienza University of Rome, Rome, Italy
| | - Fabio Pulcinelli
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Valeria Raparelli
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy
- Faculty of Nursing, University of Alberta, Edmonton, Alberta, Canada
- University Center for Studies on Gender Medicine, University of Ferrara, Ferrara, Italy
| | - Roberto Cangemi
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Marcella Visentini
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Stefania Basili
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Lucia Stefanini
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
- Istituto Pasteur Italia—Fondazione Cenci Bolognetti, Rome, Italy
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2
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Schanze N, Hamad MA, Nührenberg TG, Bode C, Duerschmied D. Platelets in Myocardial Ischemia/Reperfusion Injury. Hamostaseologie 2022; 43:110-121. [PMID: 35913081 PMCID: PMC10132858 DOI: 10.1055/a-1739-9351] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022] Open
Abstract
Coronary artery disease, including myocardial infarction (MI), remains a leading cause of global mortality. Rapid reperfusion therapy is key to the improvement of patient outcome but contributes substantially to the final cardiac damage. This phenomenon is called "ischemia/reperfusion injury (IRI)." The underlying mechanisms of IRI are complex and not fully understood. Contributing cellular and molecular mechanisms involve the formation of microthrombi, alterations in ion concentrations, pH shifts, dysregulation of osmolality, and, importantly, inflammation. Beyond their known action as drivers of the development of coronary plaques leading to MI, platelets have been identified as important mediators in myocardial IRI. Circulating platelets are activated by the IRI-provoked damages in the vascular endothelium. This leads to platelet adherence to the reperfused endothelium, aggregation, and the formation of microthrombi. Furthermore, activated platelets release vasoconstrictive substances, act via surface molecules, and enhance leukocyte infiltration into post-IR tissue, that is, via platelet-leukocyte complexes. A better understanding of platelet contributions to myocardial IRI, including their interaction with other lesion-associated cells, is necessary to develop effective treatment strategies to prevent IRI and further improve the condition of the reperfused myocardium. In this review, we briefly summarize platelet properties that modulate IRI. We also describe the beneficial impacts of antiplatelet agents as well as their mechanisms of action in IRI beyond classic effects.
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Affiliation(s)
- Nancy Schanze
- Department of Cardiology and Angiology I, Heart Center, University of Freiburg, Freiburg, Germany.,Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Muataz Ali Hamad
- Department of Cardiology and Angiology I, Heart Center, University of Freiburg, Freiburg, Germany.,Spemann Graduate School of Biology and Medicine (SGBM), University of Freiburg, Freiburg, Germany.,Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Thomas Georg Nührenberg
- Department of Cardiology and Angiology II, Heart Center, University of Freiburg, Freiburg, Germany.,Institute for Experimental and Clinical Pharmacology and Toxicology, University of Freiburg, Freiburg, Germany
| | - Christoph Bode
- Department of Cardiology and Angiology I, Heart Center, University of Freiburg, Freiburg, Germany
| | - Daniel Duerschmied
- Department of Cardiology and Angiology I, Heart Center, University of Freiburg, Freiburg, Germany.,Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany.,European Center for AngioScience (ECAS) and German Center for Cardiovascular Research (DZHK) partner site Heidelberg/Mannheim, Mannheim, Germany
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3
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Platelet activation and partial desensitization are associated with viral xenophagy in patients with severe COVID-19. Blood Adv 2022; 6:3884-3898. [PMID: 35789374 PMCID: PMC9068266 DOI: 10.1182/bloodadvances.2022007143] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 04/19/2022] [Indexed: 12/17/2022] Open
Abstract
During severe COVID-19, platelets get activated and become partly desensitized through mechanisms involving glycoprotein shedding. Platelets from patients with severe COVID-19 internalize SARS-CoV-2 and develop viral xenophagy.
Mild thrombocytopenia, changes in platelet gene expression, enhanced platelet functionality, and presence of platelet-rich thrombi in the lung have been associated with thromboinflammatory complications of patients with COVID-19. However, whether severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) gets internalized by platelets and directly alters their behavior and function in infected patients remains elusive. Here, we investigated platelet parameters and the presence of viral material in platelets from a prospective cohort of 29 patients with severe COVID-19 admitted to an intensive care unit. A combination of specific assays, tandem mass spectrometry, and flow cytometry indicated high levels of protein and lipid platelet activation markers in the plasma from patients with severe COVID-19 associated with an increase of proinflammatory cytokines and leukocyte-platelets interactions. Platelets were partly desensitized, as shown by a significant reduction of αIIbβ3 activation and granule secretion in response to stimulation and a decrease of surface GPVI, whereas plasma from patients with severe COVID-19 potentiated washed healthy platelet aggregation response. Transmission electron microscopy indicated the presence of SARS-CoV-2 particles in a significant fraction of platelets as confirmed by immunogold labeling and immunofluorescence imaging of Spike and nucleocapsid proteins. Compared with platelets from healthy donors or patients with bacterial sepsis, platelets from patients with severe COVID-19 exhibited enlarged intracellular vesicles and autophagolysosomes. They had large LC3-positive structures and increased levels of LC3II with a co-localization of LC3 and Spike, suggesting that platelets can digest SARS-CoV-2 material by xenophagy in critically ill patients. Altogether, these data show that during severe COVID-19, platelets get activated, become partly desensitized, and develop a selective autophagy response.
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4
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Practical Considerations of Dissolved Oxygen Levels for Platelet Function under Hypoxia. Int J Mol Sci 2021; 22:ijms222413223. [PMID: 34948023 PMCID: PMC8703370 DOI: 10.3390/ijms222413223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 11/30/2021] [Accepted: 12/01/2021] [Indexed: 11/17/2022] Open
Abstract
Investigating human platelet function in low-oxygen environments is important in multiple settings, including hypobaric hypoxia (e.g., high altitude), sea level hypoxia-related disease, and thrombus stability. These studies often involve drawing blood from which platelets are isolated and analysed at atmospheric conditions or re-exposed to low oxygen levels in hypoxia chambers before testing. However, it remains unknown how the in vitro handling of the samples itself changes their dissolved oxygen concentration, which might affect platelet function and experimental results. Here, we prepared healthy donor platelet-rich plasma and washed platelet (WP) suspensions and exposed them to 2% oxygen. We found that the use of hypoxia pre-equilibrated tubes, higher platelet concentrations (>2 × 108/mL versus 2 × 107/mL), smaller volumes (600 µL versus 3 mL), and presence of plasma reduced the time for samples to reach 2% oxygen. Notably, oxygen levels decreased below 2% in most suspensions, but also in WP maintained at atmospheric 21% oxygen. Additionally, platelet spreading on fibrinogen was decreased when using hypoxic fibrinogen-coated culture plates regardless of the oxygen percentage (2% or 21%) in which platelet incubation took place. Thus, sample handling and experimental conditions should be carefully monitored in platelet-hypoxia studies as they might compromise results interpretation and comparison across studies.
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5
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Rodriguez D, Watts D, Gaete D, Sormendi S, Wielockx B. Hypoxia Pathway Proteins and Their Impact on the Blood Vasculature. Int J Mol Sci 2021; 22:ijms22179191. [PMID: 34502102 PMCID: PMC8431527 DOI: 10.3390/ijms22179191] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/16/2021] [Accepted: 08/21/2021] [Indexed: 12/12/2022] Open
Abstract
Every cell in the body requires oxygen for its functioning, in virtually every animal, and a tightly regulated system that balances oxygen supply and demand is therefore fundamental. The vascular network is one of the first systems to sense oxygen, and deprived oxygen (hypoxia) conditions automatically lead to a cascade of cellular signals that serve to circumvent the negative effects of hypoxia, such as angiogenesis associated with inflammation, tumor development, or vascular disorders. This vascular signaling is driven by central transcription factors, namely the hypoxia inducible factors (HIFs), which determine the expression of a growing number of genes in endothelial cells and pericytes. HIF functions are tightly regulated by oxygen sensors known as the HIF-prolyl hydroxylase domain proteins (PHDs), which are enzymes that hydroxylate HIFs for eventual proteasomal degradation. HIFs, as well as PHDs, represent attractive therapeutic targets under various pathological settings, including those involving vascular (dys)function. We focus on the characteristics and mechanisms by which vascular cells respond to hypoxia under a variety of conditions.
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6
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Bikov A, Meszaros M, Schwarz EI. Coagulation and Fibrinolysis in Obstructive Sleep Apnoea. Int J Mol Sci 2021; 22:ijms22062834. [PMID: 33799528 PMCID: PMC8000922 DOI: 10.3390/ijms22062834] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 03/07/2021] [Accepted: 03/08/2021] [Indexed: 12/29/2022] Open
Abstract
Obstructive sleep apnoea (OSA) is a common disease which is characterised by repetitive collapse of the upper airways during sleep resulting in chronic intermittent hypoxaemia and frequent microarousals, consequently leading to sympathetic overflow, enhanced oxidative stress, systemic inflammation, and metabolic disturbances. OSA is associated with increased risk for cardiovascular morbidity and mortality, and accelerated coagulation, platelet activation, and impaired fibrinolysis serve the link between OSA and cardiovascular disease. In this article we briefly describe physiological coagulation and fibrinolysis focusing on processes which could be altered in OSA. Then, we discuss how OSA-associated disturbances, such as hypoxaemia, sympathetic system activation, and systemic inflammation, affect these processes. Finally, we critically review the literature on OSA-related changes in markers of coagulation and fibrinolysis, discuss potential reasons for discrepancies, and comment on the clinical implications and future research needs.
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Affiliation(s)
- Andras Bikov
- North West Lung Centre, Manchester University NHS Foundation Trust, Manchester M23 9LT, UK
- Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester M13 9MT, UK
- Correspondence: ; Tel.: +44-161-291-2493; Fax: +44-161-291-5730
| | - Martina Meszaros
- Department of Pulmonology, Semmelweis University, 1083 Budapest, Hungary;
- Department of Pulmonology and Sleep Disorders Centre, University Hospital Zurich, 8006 Zurich, Switzerland;
| | - Esther Irene Schwarz
- Department of Pulmonology and Sleep Disorders Centre, University Hospital Zurich, 8006 Zurich, Switzerland;
- Centre of Competence Sleep & Health Zurich, University of Zurich, 8091 Zurich, Switzerland
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7
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Gaur P, Saini S, Ray K, Asanbekovna KN, Akunov A, Maripov A, Sarybaev A, Singh SB, Kumar B, Vats P. Temporal transcriptome analysis suggest modulation of multiple pathways and gene network involved in cell-cell interaction during early phase of high altitude exposure. PLoS One 2020; 15:e0238117. [PMID: 32911517 PMCID: PMC7482924 DOI: 10.1371/journal.pone.0238117] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 08/09/2020] [Indexed: 11/19/2022] Open
Abstract
High altitude (HA) conditions induce several physiological and molecular changes, prevalent in individuals who are unexposed to this environment. Individuals exposed towards HA hypoxia yields physiological and molecular orchestration to maintain adequate tissue oxygen delivery and supply at altitude. This study aimed to understand the temporal changes at altitude of 4,111m. Physiological parameters and transcriptome study was conducted at high altitude day 3, 7, 14 and 21. We observed changes in differentially expressed gene (DEG) at high altitude time points along with altered BP, HR, SpO2, mPAP. Physiological changes and unsupervised learning of DEG's discloses high altitude day 3 as distinct time point. Gene enrichment analysis of ontologies and pathways indicate cellular dynamics and immune response involvement in early day exposure and later stable response. Major clustering of genes involved in cellular dynamics deployed into broad categories: cell-cell interaction, blood signaling, coagulation system, and cellular process. Our data reveals genes and pathways perturbed for conditions like vascular remodeling, cellular homeostasis. In this study we found the nodal point of the gene interactive network and candidate gene controlling many cellular interactive pathways VIM, CORO1A, CD37, STMN1, RHOC, PDE7B, NELL1, NRP1 and TAGLN and the most significant among them i.e. VIM gene was identified as top hub gene. This study suggests a unique physiological and molecular perturbation likely to play a critical role in high altitude associated pathophysiological condition during early exposure compared to later time points.
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Affiliation(s)
- Priya Gaur
- Defence Institute of Physiology and Allied Sciences, Delhi, India
| | - Supriya Saini
- Defence Institute of Physiology and Allied Sciences, Delhi, India
| | - Koushik Ray
- Defence Institute of Physiology and Allied Sciences, Delhi, India
| | | | - Almaz Akunov
- Kyrgyz Indian Mountain Biomedical Research Centre, Bishkek, Kyrgyz Republic, Kyrgyzstan
| | - Abdirashit Maripov
- Kyrgyz Indian Mountain Biomedical Research Centre, Bishkek, Kyrgyz Republic, Kyrgyzstan
| | - Akpay Sarybaev
- Kyrgyz Indian Mountain Biomedical Research Centre, Bishkek, Kyrgyz Republic, Kyrgyzstan
- * E-mail: , (PV); (AS)
| | - Shashi Bala Singh
- National Institute of Pharmaceutical Education & Research, Hyderabad, Telangana, India
| | - Bhuvnesh Kumar
- Defence Institute of Physiology and Allied Sciences, Delhi, India
| | - Praveen Vats
- Defence Institute of Physiology and Allied Sciences, Delhi, India
- * E-mail: , (PV); (AS)
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8
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Zhang H, Zhang S, Zhang J, Zhou R, Nie Y, Ren S, Li J, Feng K, Ji F, Kong G, Li Z. Improvement of human platelet aggregation post-splenectomy with paraesophagogastric devascularization in chronic hepatitis B patients with cirrhotic hypersplenism. Platelets 2019; 31:1019-1027. [PMID: 31851564 DOI: 10.1080/09537104.2019.1704715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Thrombocytopenia is a common hematological abnormality in patients with cirrhotic hypersplenism. Splenectomy with paraesophagogastric devascularization (SPD) is a conventional surgical therapy which can reverse pancytopenia in these patients. Platelets are traditionally recognized for their central role in hemostasis. However, the status of platelet aggregation in chronic hepatitis B patients with cirrhotic hypersplenism before and after SPD has not been reported yet. A total of 41 cirrhotic patients and 31 healthy controls were included in this study. Platelet aggregation was detected by AggRAM® Advanced Modular System (Helena Laboratories, USA). ELISA was used to detect the cytokines closely related to platelet aggregation. Expressions of platelet membrane glycoproteins (GPs) were evaluated by flow cytometric analysis. Platelet aggregation was found to be decreased distinctly in the cirrhotic patients, and to be restored to normal level after SPD. The cirrhotic patients showed higher plasma levels of the cytokines HMGB1, PEDF, vWF, cAMP and cGMP, which also improved partially after SPD. Moreover, the cirrhotic patients had much lower expression of GPIIb/IIIa, GPIbα and P-selectin than either the healthy controls or SPD patients at basal or activated level. Generally, SPD benefits cirrhotic patients with bleeding tendencies by improving platelet counts and aggregation. GPIIb/IIIa may be the key membrane protein responsible for the change in platelet aggregation before and after SPD.
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Affiliation(s)
- Hui Zhang
- National and Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Shaanxi Provincial Clinical Research Center for Hepatic and Splenic Diseases, Xi'an, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China
| | - Shaoying Zhang
- National and Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Shaanxi Provincial Clinical Research Center for Hepatic and Splenic Diseases, Xi'an, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China
| | - Jian Zhang
- Shaanxi Provincial Clinical Research Center for Hepatic and Splenic Diseases, Xi'an, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China
| | - Rui Zhou
- Shaanxi Provincial Clinical Research Center for Hepatic and Splenic Diseases, Xi'an, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China
| | - Yongzhan Nie
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Disease and Xijing Hospital of Digestive Diseases, Fourth Military Medical University , Xi'an, Shaanxi Province, People's Republic of China
| | - Song Ren
- Shaanxi Provincial Clinical Research Center for Hepatic and Splenic Diseases, Xi'an, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China
| | - Jun Li
- National and Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Shaanxi Provincial Clinical Research Center for Hepatic and Splenic Diseases, Xi'an, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China
| | - Keping Feng
- National and Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Shaanxi Provincial Clinical Research Center for Hepatic and Splenic Diseases, Xi'an, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China
| | - Fanpu Ji
- National and Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Shaanxi Provincial Clinical Research Center for Hepatic and Splenic Diseases, Xi'an, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Department of Infectious Diseases, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University Ministry of Education of China , Xi'an, Shaanxi Province, People's Republic of China
| | - Guangyao Kong
- National and Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Shaanxi Provincial Clinical Research Center for Hepatic and Splenic Diseases, Xi'an, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University Ministry of Education of China , Xi'an, Shaanxi Province, People's Republic of China
| | - Zongfang Li
- National and Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Shaanxi Provincial Clinical Research Center for Hepatic and Splenic Diseases, Xi'an, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi Province, People's Republic of China.,Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University Ministry of Education of China , Xi'an, Shaanxi Province, People's Republic of China
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9
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Paterson GG, Young JM, Willson JA, Graham CJ, Dru RC, Lee EW, Torpey GS, Walmsley SR, Chan MV, Warner TD, Baillie JK, Thompson AAR. Hypoxia Modulates Platelet Purinergic Signalling Pathways. Thromb Haemost 2019; 120:253-261. [PMID: 31858521 PMCID: PMC7286126 DOI: 10.1055/s-0039-3400305] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Hypoxia resulting from ascent to high-altitude or pathological states at sea level is known to increase platelet reactivity. Previous work from our group has suggested that this may be adenosine diphosphate (ADP)-specific. Given the clinical importance of drugs targeting ADP pathways, research into the impact of hypoxia on platelet ADP pathways is highly important. METHODS Optimul aggregometry was performed on plasma from 29 lowland residents ascending to 4,700 m, allowing systematic assessment of platelet reactivity in response to several platelet agonists. Aggregometry was also performed in response to ADP in the presence of inhibitors of the two main ADP receptors, P2Y1 and P2Y12 (MRS2500 and cangrelor, respectively). Phosphorylation of vasodilator-stimulated phosphoprotein (VASP), a key determinant of platelet aggregation, was analysed using the VASPFix assay. RESULTS Hypobaric hypoxia significantly reduced the ability of a fixed concentration of cangrelor to inhibit ADP-induced aggregation and increased basal VASP phosphorylation. However, in the absence of P2Y receptor inhibitors, we did not find evidence of increased platelet sensitivity to any of the agonists tested and found reduced sensitivity to thrombin receptor-activating peptide-6 amide. CONCLUSION Our results provide evidence of increased P2Y1 receptor activity at high altitude and suggest down-regulation of the P2Y12 pathway through increased VASP phosphorylation. These changes in ADP pathway activity are of potential therapeutic significance to high-altitude sojourners and hypoxic sea level patients prescribed platelet inhibitors and warrant further investigation.
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Affiliation(s)
- Gordon G Paterson
- APEX (Altitude Physiology Expeditions), Edinburgh, United Kingdom.,Edinburgh Medical School, University of Edinburgh, Edinburgh, United Kingdom
| | - Jason M Young
- APEX (Altitude Physiology Expeditions), Edinburgh, United Kingdom.,Edinburgh Medical School, University of Edinburgh, Edinburgh, United Kingdom
| | - Joseph A Willson
- University of Edinburgh Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Christopher J Graham
- APEX (Altitude Physiology Expeditions), Edinburgh, United Kingdom.,Edinburgh Medical School, University of Edinburgh, Edinburgh, United Kingdom
| | - Rebecca C Dru
- APEX (Altitude Physiology Expeditions), Edinburgh, United Kingdom.,Edinburgh Medical School, University of Edinburgh, Edinburgh, United Kingdom
| | - Eleanor W Lee
- APEX (Altitude Physiology Expeditions), Edinburgh, United Kingdom.,Edinburgh Medical School, University of Edinburgh, Edinburgh, United Kingdom
| | - Greig S Torpey
- APEX (Altitude Physiology Expeditions), Edinburgh, United Kingdom.,Edinburgh Medical School, University of Edinburgh, Edinburgh, United Kingdom
| | - Sarah R Walmsley
- University of Edinburgh Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Melissa V Chan
- Centre for Immunobiology, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Timothy D Warner
- Centre for Immunobiology, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - John Kenneth Baillie
- APEX (Altitude Physiology Expeditions), Edinburgh, United Kingdom.,Division of Genetics and Genomics, The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom.,Department of Anaesthesia, Critical Care and Pain Medicine, Royal Infirmary of Edinburgh, NHS Lothian, Edinburgh, United Kingdom
| | - Alfred Arthur Roger Thompson
- APEX (Altitude Physiology Expeditions), Edinburgh, United Kingdom.,Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
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10
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A bacterial metabolite, trimethylamine N-oxide, disrupts the hemostasis balance in human primary endothelial cells but no coagulopathy in mice. Blood Coagul Fibrinolysis 2019; 30:324-330. [DOI: 10.1097/mbc.0000000000000838] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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11
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Kicken CH, van der Vorm LN, Zwaveling S, Schoenmaker E, Remijn JA, Huskens D, de Laat B. A Hypoxic Environment Attenuates Exercise-Induced Procoagulant Changes Due to Decreased Platelet Activation. TH OPEN 2019; 3:e216-e226. [PMID: 31338487 PMCID: PMC6645913 DOI: 10.1055/s-0039-1692991] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 05/23/2019] [Indexed: 02/06/2023] Open
Abstract
Introduction Although physical exercise is protective against cardiovascular disease, it can also provoke sudden cardiac death (exercise paradox). Epidemiological studies suggest that systemic hypoxia at high altitude is a risk factor for venous thromboembolism. Forthcoming, this study investigated the effect of repeated exercise at high altitude on blood coagulation, platelet function, and fibrinolysis. Methods Six trained male volunteers were recruited. Participants ascended from sea level to 3,375 m altitude. They performed four exercise tests at 65 to 80% of their heart-rate reserve during 2 hours: one time at sea level and three times on consecutive days at 3,375 m altitude. Thrombin generation (TG) was measured in whole blood (WB) and platelet-rich and platelet-poor plasma. Coagulation factor levels were measured. Platelet activation was measured as αIIbβ3 activation and P-selectin expression. Fibrinolysis was studied using a clot-lysis assay. Results Normoxic exercise increased plasma peak TG through increased factor VIII (FVIII), and increased von Willebrand factor (VWF) and active VWF levels. Platelet granule release potential was slightly decreased. After repetitive hypoxic exercise, the increase in (active) VWF tapered, and there was no more distinct exercise-related increase in peak. Platelet aggregation potential and platelet-dependent TG decreased at high altitude. There were no effects on fibrinolysis upon exercise and/or hypoxia. Conclusion Strenuous exercise induces a procoagulant state that is mediated by the endothelium, by increasing VWF and secondarily raising FVIII levels. After repetitive exercise, the amplitude of the endothelial response to exercise diminishes. A hypoxic environment appears to further attenuate the procoagulant changes by decreasing platelet activation and platelet-dependent TG.
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Affiliation(s)
- Cécile H. Kicken
- Department of Anesthesiology, Maastricht University Medical Center, Maastricht, The Netherlands
- Synapse Research Institute, Maastricht, The Netherlands
| | - Lisa N. van der Vorm
- Synapse Research Institute, Maastricht, The Netherlands
- Department of Clinical Chemistry and Hematology, Gelre Hospitals, Apeldoorn, The Netherlands
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands
| | - Suzanne Zwaveling
- Synapse Research Institute, Maastricht, The Netherlands
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands
| | | | - Jasper A. Remijn
- Department of Clinical Chemistry and Hematology, Gelre Hospitals, Apeldoorn, The Netherlands
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands
- Department of Clinical Chemistry, Meander Medical Center, Amersfoort, The Netherlands
| | - Dana Huskens
- Synapse Research Institute, Maastricht, The Netherlands
| | - Bas de Laat
- Synapse Research Institute, Maastricht, The Netherlands
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands
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12
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Huang J, Li X, Shi X, Zhu M, Wang J, Huang S, Huang X, Wang H, Li L, Deng H, Zhou Y, Mao J, Long Z, Ma Z, Ye W, Pan J, Xi X, Jin J. Platelet integrin αIIbβ3: signal transduction, regulation, and its therapeutic targeting. J Hematol Oncol 2019; 12:26. [PMID: 30845955 PMCID: PMC6407232 DOI: 10.1186/s13045-019-0709-6] [Citation(s) in RCA: 208] [Impact Index Per Article: 41.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Accepted: 02/21/2019] [Indexed: 12/18/2022] Open
Abstract
Integrins are a family of transmembrane glycoprotein signaling receptors that can transmit bioinformation bidirectionally across the plasma membrane. Integrin αIIbβ3 is expressed at a high level in platelets and their progenitors, where it plays a central role in platelet functions, hemostasis, and arterial thrombosis. Integrin αIIbβ3 also participates in cancer progression, such as tumor cell proliferation and metastasis. In resting platelets, integrin αIIbβ3 adopts an inactive conformation. Upon agonist stimulation, the transduction of inside-out signals leads integrin αIIbβ3 to switch from a low- to high-affinity state for fibrinogen and other ligands. Ligand binding causes integrin clustering and subsequently promotes outside-in signaling, which initiates and amplifies a range of cellular events to drive essential platelet functions such as spreading, aggregation, clot retraction, and thrombus consolidation. Regulation of the bidirectional signaling of integrin αIIbβ3 requires the involvement of numerous interacting proteins, which associate with the cytoplasmic tails of αIIbβ3 in particular. Integrin αIIbβ3 and its signaling pathways are considered promising targets for antithrombotic therapy. This review describes the bidirectional signal transduction of integrin αIIbβ3 in platelets, as well as the proteins responsible for its regulation and therapeutic agents that target integrin αIIbβ3 and its signaling pathways.
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Affiliation(s)
- Jiansong Huang
- Department of Hematology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Hematologic Malignancies, Diagnosis and Treatment, Hangzhou, Zhejiang, China.,Institute of Hematology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xia Li
- Department of Hematology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Hematologic Malignancies, Diagnosis and Treatment, Hangzhou, Zhejiang, China.,Institute of Hematology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xiaofeng Shi
- Department of Hematology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Mark Zhu
- Department of Hematology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jinghan Wang
- Department of Hematology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Hematologic Malignancies, Diagnosis and Treatment, Hangzhou, Zhejiang, China.,Institute of Hematology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Shujuan Huang
- Department of Hematology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Hematologic Malignancies, Diagnosis and Treatment, Hangzhou, Zhejiang, China.,Institute of Hematology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xin Huang
- Department of Hematology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Hematologic Malignancies, Diagnosis and Treatment, Hangzhou, Zhejiang, China.,Institute of Hematology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Huafeng Wang
- Department of Hematology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Hematologic Malignancies, Diagnosis and Treatment, Hangzhou, Zhejiang, China.,Institute of Hematology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Department of Hematological Malignancies Translational Science, Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute, City of Hope Medical Center, Duarte, CA, 91010, USA
| | - Ling Li
- Department of Hematological Malignancies Translational Science, Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute, City of Hope Medical Center, Duarte, CA, 91010, USA
| | - Huan Deng
- Department of Pathology, The Fourth Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Yulan Zhou
- Department of Hematology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jianhua Mao
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Collaborative Innovation Center of Hematology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Sino-French Research Centre for Life Sciences and Genomics, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhangbiao Long
- Department of Hematology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Zhixin Ma
- Clinical Prenatal Diagnosis Center, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Wenle Ye
- Department of Hematology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Hematologic Malignancies, Diagnosis and Treatment, Hangzhou, Zhejiang, China.,Institute of Hematology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jiajia Pan
- Department of Hematology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Hematologic Malignancies, Diagnosis and Treatment, Hangzhou, Zhejiang, China.,Institute of Hematology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xiaodong Xi
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Collaborative Innovation Center of Hematology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China. .,Sino-French Research Centre for Life Sciences and Genomics, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Jie Jin
- Department of Hematology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China. .,Key Laboratory of Hematologic Malignancies, Diagnosis and Treatment, Hangzhou, Zhejiang, China. .,Institute of Hematology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
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13
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Mojiri A, Alavi P, Lorenzana Carrillo MA, Nakhaei-Nejad M, Sergi CM, Thebaud B, Aird WC, Jahroudi N. Endothelial cells of different organs exhibit heterogeneity in von Willebrand factor expression in response to hypoxia. Atherosclerosis 2019; 282:1-10. [PMID: 30665023 DOI: 10.1016/j.atherosclerosis.2019.01.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 12/17/2018] [Accepted: 01/09/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND AIMS We have previously demonstrated that in response to hypoxia, von Willebrand factor (VWF) expression is upregulated in lung and heart endothelial cells both in vitro and in vivo, but not in kidney endothelial cells. The aim of our current study was to determine whether endothelial cells of different organs employ distinct molecular mechanisms to mediate VWF response to hypoxia. METHODS We used cultured human primary lung, heart and kidney endothelial cells to determine the activation of endogenous VWF as well as exogenously expressed VWF promoter in response to hypoxia. Chromatin immunoprecipitation and siRNA knockdown analyses were used to determine the roles of VWF promoter associated transacting factors in mediating its hypoxia response. Platelet aggregates formations in vascular beds of mice were used as a marker for potential functional consequences of hypoxia-induced VWF upregulation in vivo. RESULTS Our analyses demonstrated that while Yin Yang 1 (YY1) and specificity protein 1 (Sp1) participate in the hypoxia-induced upregulation of VWF specifically in lung endothelial cells, GATA6 mediates this process specifically in heart endothelial cells. In both cell types, the response to hypoxia involves the decreased association of the NFIB repressor with the VWF promoter, and the increased acetylation of the promoter-associated histone H4. In mice exposed to hypoxia, the upregulation of VWF expression was concomitant with the presence of thrombi in heart and lung, but not kidney vascular beds. CONCLUSIONS Heart and lung endothelial cells demonstrated VWF upregulation in response to hypoxia, using distinct mechanisms, while this response was lacking in kidney endothelial cells.
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Affiliation(s)
- Anahita Mojiri
- Department of Medicine, University of Alberta, Edmonton, Canada
| | - Parnian Alavi
- Department of Medicine, University of Alberta, Edmonton, Canada
| | | | | | - Consolato M Sergi
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada
| | - Bernard Thebaud
- Ottawa Hospital Research Institute & CHEO Research Institute, Pediatrics, Ottawa, Ontario, Canada
| | - William C Aird
- Center for Vascular Biology Research and Division of Molecular and Vascular Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Nadia Jahroudi
- Department of Medicine, University of Alberta, Edmonton, Canada.
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14
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Shang C, Wuren T, Ga Q, Bai Z, Guo L, Eustes AS, McComas KN, Rondina MT, Ge R. The human platelet transcriptome and proteome is altered and pro-thrombotic functional responses are increased during prolonged hypoxia exposure at high altitude. Platelets 2019; 31:33-42. [PMID: 30721642 DOI: 10.1080/09537104.2019.1572876] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Exposure to hypoxia, through ascension to high altitudes (HAs), air travel, or human disease, is associated with an increased incidence of thrombosis in some settings. Mechanisms underpinning this increased thrombosis risk remain incompletely understood, and the effects of more sustained hypoxia on the human platelet molecular signature and associated functional responses have never been examined. We examined the effects of prolonged (≥2 months continuously) hypobaric hypoxia on platelets isolated from subjects residing at HA (3,700 meters) and, for comparison, matched subjects residing under normoxia conditions at sea level (50 meters). Using complementary transcriptomic, proteomic, and functional methods, we identified that the human platelet transcriptome is markedly altered under prolonged exposure to hypobaric hypoxia at HA. Among the significantly, differentially expressed genes (mRNA and protein), were those having canonical roles in platelet activation and thrombosis, including membrane glycoproteins (e.g. GP4, GP6, GP9), integrin subunits (e.g. ITGA2B), and alpha-granule chemokines (e.g. SELP, PF4V1). Platelets from subjects residing at HA were hyperactive, as demonstrated by increased engagement and adhesion to fibrinogen, fewer alpha granules by transmission electron microscopy, increased circulating PF4 and ADP, and significantly enhanced clot retraction. In conclusion, we identify that prolonged hypobaric hypoxia exposure due to HA alters the platelet transcriptome and proteome, triggering increased functional activation responses that may contribute to thrombosis. Our findings may also have relevance across a range of human diseases where chronic hypoxia, platelet activation, and thrombosis are increased.
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Affiliation(s)
- Chunxiang Shang
- Research Center for High Altitude Medicine, Qinghai University, Xining, Qinghai, China.,Oncology Department, The Fifth Hospital of Qinghai Provinces, Xining, Qinghai, China
| | - Tana Wuren
- Research Center for High Altitude Medicine, Qinghai University, Xining, Qinghai, China.,Departments of Internal Medicine and Pathology, University of Utah, Salt Lake City, UT, USA
| | - Qing Ga
- Research Center for High Altitude Medicine, Qinghai University, Xining, Qinghai, China
| | - Zhenzhong Bai
- Research Center for High Altitude Medicine, Qinghai University, Xining, Qinghai, China
| | - Li Guo
- The University of Utah Molecular Medicine Program, University of Utah, Salt Lake City, UT, USA
| | - Alicia S Eustes
- Departments of Internal Medicine and Pathology, University of Utah, Salt Lake City, UT, USA.,The University of Utah Molecular Medicine Program, University of Utah, Salt Lake City, UT, USA
| | - Kyra N McComas
- Departments of Internal Medicine and Pathology, University of Utah, Salt Lake City, UT, USA
| | - Matthew T Rondina
- Departments of Internal Medicine and Pathology, University of Utah, Salt Lake City, UT, USA.,The University of Utah Molecular Medicine Program, University of Utah, Salt Lake City, UT, USA.,Hematological Department, George E. Wahlen VAMC GRECC, Salt Lake City, UT, USA
| | - Rili Ge
- Research Center for High Altitude Medicine, Qinghai University, Xining, Qinghai, China
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15
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IL-17A promotes the formation of deep vein thrombosis in a mouse model. Int Immunopharmacol 2018; 57:132-138. [PMID: 29482157 DOI: 10.1016/j.intimp.2018.02.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 02/10/2018] [Accepted: 02/12/2018] [Indexed: 02/07/2023]
Abstract
Deep venous thrombosis (DVT) is a significant problem in the health care industry worldwide. However, the factors and signaling pathways that trigger DVT formation are still largely unknown. In this study, we investigated the role of interleukin-17A (IL-17A) in DVT formation, focusing on the role of platelet aggregation, neutrophil infiltration, and endothelium cell (EC) activation. Notably, IL-17A levels increased in DVT patients as well as in a mouse DVT model. The DVT model mice were injected with recombinant mouse-IL-17A (rIL-17A) or anti-IL-17A monoclonal antibody (mAb) to further evaluate the effects of this cytokine. We found that rIL-17A promotes DVT formation, while IL-17A mAb represses DVT formation. Furthermore, platelet activation, highlighted by CD61 and CD49β expression, and aggregation were enhanced in platelets of rIL-17A-treated mice. rIL-17A also enhanced neutrophil infiltration by regulating the expression of macrophage inflammatory protein-2 (MIP-2) and the release of neutrophil extracellular traps (NETs). IL-17A mAb treatment inhibited both platelet activation and neutrophil activity. Moreover, rIL-17A appears to promote vein EC activation, while IL-17A mAb deters it. Taken together, these data suggest that IL-17A promotes DVT pathogenesis by enhancing platelet activation and aggregation, neutrophil infiltration, and EC activation and that anti-IL-17A mAb could be used for the treatment of DVT.
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