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Jiang L, Xu C, Zhao Y, Huang Q, Yuan W, Wu Y, Fei X. Papain ameliorates monocyte-platelet aggregate formation-mediated inflammatory responses in monocytes by upregulating miRNA-146a transcription. PLoS One 2022; 17:e0278059. [PMID: 36409752 PMCID: PMC9678272 DOI: 10.1371/journal.pone.0278059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 11/09/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND MicroRNA-146a (miRNA-146a) is a nuclear factor κB (NF-κB)-inducible and inflammation-sensitive miRNA, while papain elicits anti-inflammatory effects by inhibiting monocyte-platelet aggregate (MPA)-mediated NF-κB pathway activation in monocytes. This study aimed to demonstrate the underlying effects of papain on MPA formation-initiated miRNA-146a expression and subsequent action in monocytes. METHODS THP-1 cells were exposed to papain, miRNA-146a mimic and inhibitor, NF-κB inhibitor (BAY11-7082), and platelets. Flow cytometry was used to measure the MPA formation-initiated monocyte activation. Levels of miRNA-146a, cyclooxygenase 2 (COX-2) mRNA and protein, and monocyte chemoattractant protein 1 (MCP-1) were analyzed in monocytes by RT-PCR, western blot, and ELISA. RESULTS The NF-κB inhibitor and miRNA-146a mimics upregulated miRNA-146a expression but suppressed subsequent monocyte activation and expression of COX-2 and MCP-1. Following exposure to papain, the enhanced miRNA-146a transcription induced by MPA-formation was found along with significant inhibition of monocyte activation in a dose-dependent manner. However, the inhibitory tendency was significantly reversed by miRNA-146a inhibitors. Expression of COX-2 mRNA and protein, as well as MCP-1, was inhibited in monocytes by papain, whereas miRNA-146a inhibitors promoted COX-2 and MCP-1 expression. CONCLUSION Our findings suggest that papain can inhibit MPA formation-mediated expression of inflammatory mediators in activated monocytes by upregulating miRNA-146a transcription.
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Affiliation(s)
- Lei Jiang
- Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Chan Xu
- Department of Laboratory Medicine, Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Yan Zhao
- Heart Center, Department of Cardiovascular Medicine, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Qinghua Huang
- Geriatric Medicine Center, Department of Endocrinology, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Wufeng Yuan
- Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Yan Wu
- Department of Laboratory Medicine, Lin’an First People’s Hospital of Hangzhou, Hangzhou, Zhejiang, China
| | - Xianming Fei
- Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
- * E-mail:
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2
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Cimmino G, di Serafino L, Cirillo P. Pathophysiology and mechanisms of Acute Coronary Syndromes: athero-thrombosis, immune-inflammation and beyond. Expert Rev Cardiovasc Ther 2022; 20:351-362. [PMID: 35510629 DOI: 10.1080/14779072.2022.2074836] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
INTRODUCTION The pathophysiology of atherosclerosis and its acute complications, such as the Acute Coronary Syndromes (ACS), is continuously under investigation. Immunity and inflammation seem to play a pivotal role in promoting formation and grow of atherosclerotic plaques. At the same time, plaque rupture followed by both platelets' activation and coagulation cascade induction lead to intracoronary thrombus formation. Although these phenomena might be considered responsible of about 90% of ACS, in up to 5-10% of acute syndromes a non-obstructive coronary artery disease (MINOCA) might be documented. This paper gives an overview on athero-thrombosis and immuno-inflammation processes involved in ACS pathophysiology also emphasizing the pathological mechanisms potentially involved in MINOCA. AREAS COVERED The relationship between immuno-inflammation and atherothrombosis is continuously updated by recent findings. At the same time, pathophysiology of MINOCA still remains a partially unexplored field, stimulating the research of potential links between these two aspects of ACS pathophysiology. EXPERT OPINION Pathophysyiology of ACS has been extensively investigated; however, several grey areas still remain. MINOCA represents one of these areas. At the same time, many aspects of immune-inflammation processes are still unknown. Thus, research should be continued to shed a brighter light on both these sides of "ACS" moon.
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Affiliation(s)
- Giovanni Cimmino
- Department of Translational Medical Sciences, Section of Cardiology, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Luigi di Serafino
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Plinio Cirillo
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
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3
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Pluta K, Porębska K, Urbanowicz T, Gąsecka A, Olasińska-Wiśniewska A, Targoński R, Krasińska A, Filipiak KJ, Jemielity M, Krasiński Z. Platelet-Leucocyte Aggregates as Novel Biomarkers in Cardiovascular Diseases. BIOLOGY 2022; 11:biology11020224. [PMID: 35205091 PMCID: PMC8869671 DOI: 10.3390/biology11020224] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 01/19/2022] [Accepted: 01/24/2022] [Indexed: 12/18/2022]
Abstract
Simple Summary Cardiovascular diseases are the most common cause of death worldwide. Hence, novel biomarkers are urgently needed to improve diagnosis and treatment. Platelet–leucocyte aggregates are conglomerates of platelets and leucocytes and are widely investigated as biomarkers in cardiovascular diseases. Platelet–leucocytes aggregates are present in health, but increase in patients with cardiovascular risk factors and acute or stable coronary syndromes, making them a potential diagnostic marker. Moreover, platelet–leucocyte aggregates predict outcomes after surgery or percutaneous treatment and could be used to monitor antiplatelet therapy. Emerging data about the participation of platelet–leucocyte aggregates in cardiovascular diseases pathogenesis make them an attractive target for novel therapies. Furthermore, simple detection with conventional flow cytometry provides accurate and reproducible results, although requires specific sample handling. The main task for the future is to determine the standardized protocol to measure blood concentrations of platelet–leucocyte aggregates and subsequently establish their normal range in health and disease. Abstract Platelet–leucocyte aggregates (PLA) are a formation of leucocytes and platelets bound by specific receptors. They arise in the condition of sheer stress, thrombosis, immune reaction, vessel injury, and the activation of leukocytes or platelets. PLA participate in cardiovascular diseases (CVD). Increased levels of PLA were revealed in acute and chronic coronary syndromes, carotid stenosis cardiovascular risk factors. Due to accessible, available, replicable, quick, and low-cost quantifying using flow cytometry, PLA constitute an ideal biomarker for clinical practice. PLA are promising in early diagnosing and estimating prognosis in patients with acute or chronic coronary syndromes treated by percutaneous coronary intervention (PCI) and coronary artery bypass grafting (CABG). PLA were also a reliable marker of platelet activity for monitoring antiplatelet therapy. PLA consist also targets potential therapies in CVD. All of the above potential clinical applications require further studies to validate methods of assay and proof clinical benefits.
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Affiliation(s)
- Kinga Pluta
- 1st Chair and Department of Cardiology, Medical University of Warsaw, Banacha 1a, 02-097 Warsaw, Poland; (K.P.); (K.P.)
| | - Kinga Porębska
- 1st Chair and Department of Cardiology, Medical University of Warsaw, Banacha 1a, 02-097 Warsaw, Poland; (K.P.); (K.P.)
| | - Tomasz Urbanowicz
- Department of Cardiac Surgery and Transplantology, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (T.U.); (A.O.-W.); (M.J.)
| | - Aleksandra Gąsecka
- 1st Chair and Department of Cardiology, Medical University of Warsaw, Banacha 1a, 02-097 Warsaw, Poland; (K.P.); (K.P.)
- Correspondence: ; Tel.: +48-22-599-1951
| | - Anna Olasińska-Wiśniewska
- Department of Cardiac Surgery and Transplantology, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (T.U.); (A.O.-W.); (M.J.)
| | - Radosław Targoński
- 1st Department of Cardiology, Medical University of Gdansk, 80-210 Gdansk, Poland;
| | - Aleksandra Krasińska
- Department of Ophtalmology, Poznan University of Medical Sciences, 61-701 Poznan, Poland;
| | - Krzysztof J. Filipiak
- Department of Clinical Sciences, Maria Sklodowska-Curie Medical Academy in Warsaw, 00-136 Warsaw, Poland;
| | - Marek Jemielity
- Department of Cardiac Surgery and Transplantology, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (T.U.); (A.O.-W.); (M.J.)
| | - Zbigniew Krasiński
- Department of Vascular and Endovascular Surgery, Angiology and Phlebology, Poznan University of Medical Sciences, 61-701 Poznan, Poland;
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4
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Faria AVS, Andrade SS, Peppelenbosch MP, Ferreira-Halder CV, Fuhler GM. Platelets in aging and cancer-"double-edged sword". Cancer Metastasis Rev 2020; 39:1205-1221. [PMID: 32869161 PMCID: PMC7458881 DOI: 10.1007/s10555-020-09926-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/12/2020] [Indexed: 02/06/2023]
Abstract
Platelets control hemostasis and play a key role in inflammation and immunity. However, platelet function may change during aging, and a role for these versatile cells in many age-related pathological processes is emerging. In addition to a well-known role in cardiovascular disease, platelet activity is now thought to contribute to cancer cell metastasis and tumor-associated venous thromboembolism (VTE) development. Worldwide, the great majority of all patients with cardiovascular disease and some with cancer receive anti-platelet therapy to reduce the risk of thrombosis. However, not only do thrombotic diseases remain a leading cause of morbidity and mortality, cancer, especially metastasis, is still the second cause of death worldwide. Understanding how platelets change during aging and how they may contribute to aging-related diseases such as cancer may contribute to steps taken along the road towards a "healthy aging" strategy. Here, we review the changes that occur in platelets during aging, and investigate how these versatile blood components contribute to cancer progression.
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Affiliation(s)
- Alessandra V S Faria
- Department of Gastroenterology and Hepatology, Erasmus University Medical Center Rotterdam, NL-3000 CA, Rotterdam, The Netherlands
- Department of Biochemistry and Tissue Biology, University of Campinas, UNICAMP, Campinas, SP, 13083-862, Brazil
| | | | - Maikel P Peppelenbosch
- Department of Gastroenterology and Hepatology, Erasmus University Medical Center Rotterdam, NL-3000 CA, Rotterdam, The Netherlands
| | - Carmen V Ferreira-Halder
- Department of Biochemistry and Tissue Biology, University of Campinas, UNICAMP, Campinas, SP, 13083-862, Brazil
| | - Gwenny M Fuhler
- Department of Gastroenterology and Hepatology, Erasmus University Medical Center Rotterdam, NL-3000 CA, Rotterdam, The Netherlands.
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5
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Kossmann H, Rischpler C, Hanus F, Nekolla SG, Kunze KP, Götze K, Goedel A, Sager H, Kastrati A, Sinnecker D, Kupatt C, Ibrahim T, Schwaiger M, Laugwitz KL, Dirschinger RJ. Monocyte-platelet aggregates affect local inflammation in patients with acute myocardial infarction. Int J Cardiol 2019; 287:7-12. [PMID: 31003796 DOI: 10.1016/j.ijcard.2019.04.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 04/01/2019] [Indexed: 01/12/2023]
Abstract
The local inflammatory response following acute myocardial infarction (AMI) is increasingly being recognized as a central factor determining infarct healing. Myocardial inflammation can be visualized in patients using fasting 18F-FDG PET/MRI. Although this novel biosignal correlates with long-term functional outcome, the corresponding cellular substrate is not well understood. Here we present a retrospective analysis of 29 patients with AMI who underwent revascularization, suggesting a connection between post infarction myocardial fasting 18F-FDG uptake, monocyte platelet aggregates (MPA), and P2Y12 inhibition. In detail, patients with high MPA percentages of CD14highCD16+ and CD14lowCD16+ monocytes had significantly higher local 18F-FDG uptake (SUVmean) in the infarcted myocardium than patients with low MPA (p < 0.05). Furthermore, there was an association of high MPA percentage in all monocyte subpopulations with deteriorating ΔLV-EF after 6 months (p < 0.01), which was confirmed in an extended analysis with additional 29 patients without PET/MRI data available. In this analysis, administration of Ticagrelor was associated with lower MPA percentage of CD14high monocyte subpopulations than Clopidogrel (p < 0.01) or Prasugrel (p < 0.05). Taken together, the findings from this analysis suggest that platelet aggregability may affect monocyte extravasation into the infarcted myocardium and influence long-term functional outcome. P2Y12 inhibition may intervene in this pathophysiologic process. Prospective studies are needed to further examine this important relationship.
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Affiliation(s)
- Hans Kossmann
- Klinik und Poliklinik für Innere Medizin I, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Christoph Rischpler
- Nuklearmedizinische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Franziska Hanus
- Klinik und Poliklinik für Innere Medizin I, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Stephan G Nekolla
- Nuklearmedizinische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Karl P Kunze
- Nuklearmedizinische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Katharina Götze
- Klinik und Poliklinik für Innere Medizin III, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Alexander Goedel
- Klinik und Poliklinik für Innere Medizin I, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Hendrik Sager
- Deutsches Herzzentrum, Technische Universität München, Munich, Germany
| | - Adnan Kastrati
- Deutsches Herzzentrum, Technische Universität München, Munich, Germany
| | - Daniel Sinnecker
- Klinik und Poliklinik für Innere Medizin I, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Christian Kupatt
- Klinik und Poliklinik für Innere Medizin I, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Tareq Ibrahim
- Klinik und Poliklinik für Innere Medizin I, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Markus Schwaiger
- Nuklearmedizinische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Karl-Ludwig Laugwitz
- Klinik und Poliklinik für Innere Medizin I, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Ralf J Dirschinger
- Klinik und Poliklinik für Innere Medizin I, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
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6
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Brown RA, Lip GYH. Monocyte-platelet cross-talk in peripheral artery disease-how much does the pathogenesis of atherosclerosis depend on anatomical location? ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:S19. [PMID: 31032300 DOI: 10.21037/atm.2019.01.47] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Richard A Brown
- Barts Heart Centre, Barts Health NHS Trust, St Bartholomew's Hospital, London, UK
| | - Gregory Y H Lip
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Aalborg Thrombosis Research Unit, Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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7
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Tryfonos A, Green DJ, Dawson EA. Effects of Catheterization on Artery Function and Health: When Should Patients Start Exercising Following Their Coronary Intervention? Sports Med 2019; 49:397-416. [PMID: 30719682 DOI: 10.1007/s40279-019-01055-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Coronary artery disease (CAD) is a leading cause of death worldwide, and percutaneous transluminal coronary angiography (PTCA) and/or percutaneous coronary intervention (PCI; angioplasty) are commonly used to diagnose and/or treat the obstructed coronaries. Exercise-based rehabilitation is recommended for all CAD patients; however, most guidelines do not specify when exercise training should commence following PTCA and/or PCI. Catheterization can result in arterial dysfunction and acute injury, and given the fact that exercise, particularly at higher intensities, is associated with elevated inflammatory and oxidative stress, endothelial dysfunction and a pro-thrombotic milieu, performing exercise post-PTCA/PCI may transiently elevate the risk of cardiac events. This review aims to summarize extant literature relating to the impacts of coronary interventions on arterial function, including the time-course of recovery and the potential deleterious and/or beneficial impacts of acute versus long-term exercise. The current literature suggests that arterial dysfunction induced by catheterization recovers 4-12 weeks following catheterization. This review proposes that a period of relative arterial vulnerability may exist and exercise during this period may contribute to elevated event susceptibility. We therefore suggest that CAD patients start an exercise training programme between 2 and 4 weeks post-PCI, recognizing that the literature suggest there is a 'grey area' for functional recovery between 2 and 12 weeks post-catheterization. The timing of exercise onset should take into consideration the individual characteristics of patients (age, severity of disease, comorbidities) and the intensity, frequency and duration of the exercise prescription.
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Affiliation(s)
- Andrea Tryfonos
- Research Institute for Sport and Exercise Science, Liverpool John Moores University, Liverpool, L3 3AF, UK
| | - Daniel J Green
- School of Human Sciences (Exercise and Sport Science), The University of Western Australia, Crawley, WA, 6009, Australia
| | - Ellen A Dawson
- Research Institute for Sport and Exercise Science, Liverpool John Moores University, Liverpool, L3 3AF, UK.
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8
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Brown RA, Lip GYH, Varma C, Shantsila E. Impact of Mon2 monocyte-platelet aggregates on human coronary artery disease. Eur J Clin Invest 2018; 48:e12911. [PMID: 29423944 DOI: 10.1111/eci.12911] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Accepted: 02/04/2018] [Indexed: 12/28/2022]
Abstract
BACKGROUND Monocyte-platelet aggregates (MPAs) form when Mon1, Mon2 or Mon3 monocyte subsets adhere to platelets. They are pathophysiologically linked to coronary artery disease (CAD). However, their individual roles in the occurrence of diffuse CAD remain unknown. MATERIALS AND METHODS Peripheral blood from 50 patients with diffuse CAD, 40 patients with focal CAD and 50 age-matched patients with normal coronary arteries was analysed by flow cytometry to quantify MPAs associated with individual monocyte subsets. Cutaneous forearm microcirculation was assessed using laser Doppler flowmetry at rest and after iontophoresis of acetylcholine (endothelium-dependent vasodilation) and sodium nitroprusside (endothelium-independent vasodilation) at 100 μA for 60 seconds. Patients with CAD had repeat assessment at 6 and 12 months. RESULTS Baseline counts of MPAs with Mon2 subset (CD14++CD16+CC2+ monocytes) were significantly higher in patients with diffuse CAD compared to focal CAD (P = .001) and patients without CAD (P = .006). On multivariate regression, MPAs with Mon2 independently predicted diffuse CAD (odds ratio 1.10, 95% confidence interval 1.02-1.19, P = .01) and correlated negatively with endothelium-dependent microvascular vasodilation (r = -.37, P = .008), an association which persisted after adjustment for covariates. Longitudinal observation confirmed the persistence of an inverse relationship between MPAs with Mon2 and endothelium-dependent microvascular function. CONCLUSION Monocyte-platelet aggregates with Mon2 are increased in patients with diffuse CAD and therefore could represent an important contributor to accelerated coronary atherosclerotic progression by a mechanism involving microvascular endothelial dysfunction.
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Affiliation(s)
- Richard A Brown
- Institute of Cardiovascular Sciences, City Hospital, University of Birmingham, Birmingham, UK.,Hull and East Yorkshire Hospitals NHS Trust, Castle Hill Hospital, Cottingham, UK
| | - Gregory Y H Lip
- Institute of Cardiovascular Sciences, City Hospital, University of Birmingham, Birmingham, UK.,Sandwell and West Birmingham Hospitals NHS Trust, City Hospital, Birmingham, UK
| | - Chetan Varma
- Sandwell and West Birmingham Hospitals NHS Trust, City Hospital, Birmingham, UK
| | - Eduard Shantsila
- Institute of Cardiovascular Sciences, City Hospital, University of Birmingham, Birmingham, UK
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9
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Haynes A, Linden MD, Robey E, Naylor LH, Cox KL, Lautenschlager NT, Green DJ. Relationship between monocyte-platelet aggregation and endothelial function in middle-aged and elderly adults. Physiol Rep 2017; 5:e13189. [PMID: 28533260 PMCID: PMC5449553 DOI: 10.14814/phy2.13189] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 02/09/2017] [Indexed: 01/22/2023] Open
Abstract
Low-grade inflammation, endothelial dysfunction, and platelet hyper-reactivity to agonists are associated with an increased risk of cardiovascular events. In vitro and animal studies infer an inverse mechanistic relationship between platelet activation and the production of endothelium-derived nitric oxide and prostacyclin. This concept is supported by evidence of an inverse relationship between endothelial function and platelet activation in high-risk cardiac patients. The aim of this study was to investigate what relationship, if any, exists between platelet and endothelial function in healthy, middle-aged, and elderly adults. In 51 participants (18 male, 33 post menopausal female), endothelial function was assessed by flow-mediated dilation (FMD). Platelet function was assessed by flow cytometric determination of glycoprotein IIb/IIIa activation (measured by PAC-1 binding), granule exocytosis (measured by surface P-selectin expression), and monocyte-platelet aggregates (MPAs), with and without stimulation by canonical platelet agonists adenosine diphosphate (ADP), arachidonic acid (AA), and collagen. Correlation analysis indicated there was no significant (all P => 0.05) relationship between FMD and any marker of in vivo platelet activation (MPAs R = 0.193, PAC-1 R = -0.113, anti-CD62P R = -0.078) or inducible platelet activation by ADP (MPA R = -0.128, anti-CD62P R = -0.237), AA (MPA R = -0.122, PAC-1 R = -0.045, anti-CD62P R = -0.142), or collagen (MPA R = 0.136, PAC-1 R = 0.174, anti-CD62P R = -0.077). Our findings contrast with two previous studies performed in high-risk cardiac patients, which reported inverse relationships between platelet activation and endothelial function, suggesting that some compensatory redundancy may exist in the relationship between platelet and endothelial function in preclinical populations.
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Affiliation(s)
- Andrew Haynes
- School of Sport ScienceExercise and HealthUniversity of Western AustraliaCrawleyWestern AustraliaAustralia
| | - Matthew D. Linden
- School of Pathology and Laboratory MedicineUniversity of Western AustraliaCrawleyWestern Australia
| | - Elisa Robey
- School of Sport ScienceExercise and HealthUniversity of Western AustraliaCrawleyWestern AustraliaAustralia
| | - Louise H. Naylor
- School of Sport ScienceExercise and HealthUniversity of Western AustraliaCrawleyWestern AustraliaAustralia
| | - Kay L. Cox
- School of Sport ScienceExercise and HealthUniversity of Western AustraliaCrawleyWestern AustraliaAustralia
- School of Medicine and Pharmacology (Royal Perth Hospital Unit)University of Western AustraliaCrawleyWestern AustraliaAustralia
| | - Nicola T. Lautenschlager
- Academic Unit for Psychiatry of Old AgeDepartment of PsychiatryUniversity of MelbourneMelbourneVictoriaAustralia
- NorthWestern Mental HealthMelbourne HealthParkvilleVictoriaAustralia
- School of Clinical Neurosciences and the Western Australia Centre for Health and AgeingUniversity of Western AustraliaCrawleyWestern AustraliaAustralia
| | - Daniel J. Green
- School of Sport ScienceExercise and HealthUniversity of Western AustraliaCrawleyWestern AustraliaAustralia
- Research Institute for Sport and Exercise ScienceLiverpool John Moores UniversityLiverpoolUnited Kingdom
- Principal Research FellowNational Health and Medical Research CouncilCanberraAustralian Capital TerritoryAustralia
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10
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Brown RA, Shantsila E, Varma C, Lip GYH. Epidemiology and pathogenesis of diffuse obstructive coronary artery disease: the role of arterial stiffness, shear stress, monocyte subsets and circulating microparticles. Ann Med 2016; 48:444-455. [PMID: 27282244 DOI: 10.1080/07853890.2016.1190861] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Despite falling age-adjusted mortality rates coronary artery disease (CAD) remains the leading cause of death worldwide. Advanced diffuse CAD is becoming an important entity of modern cardiology as more patients with historical revascularisation no longer have suitable anatomy for additional procedures. Advances in the treatment of diffuse obstructive CAD are hampered by a poor understanding of its development. Although the likelihood of developing clinically significant (obstructive) CAD is linked to traditional risk factors, the morphology of obstructive CAD among individuals is highly variable - some patients have diffuse stenotic disease, while others have a focal stenosis. This is challenging to explain in mechanistic terms as vascular endothelium is equally exposed to injury stimulants. Patients with diffuse disease are at high risk of adverse outcomes, particularly if unsuitable for revascularisation. We searched multiple electronic databases (MEDLINE, EMBASE and the Cochrane Database) and reviewed the epidemiology, pathogenesis and prognosis relating to advanced diffuse CAD with particular focus on the role of endothelial shear stress, large artery stiffness, monocyte subsets and circulating microparticles. Key messages Although traditional CAD risk factors correlate strongly with disease severity, significant individual variation in disease morphology exists. Advanced, diffuse CAD is difficult to treat effectively and can significantly impair quality of life and increases mortality. The pathophysiology associated with the progression of CAD is the result of complex maladaptive interaction between the endothelium, cells of the immune system and patterns of blood flow.
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Affiliation(s)
- Richard A Brown
- a University of Birmingham Institute of Cardiovascular Sciences, City Hospital , Birmingham , UK
| | - Eduard Shantsila
- a University of Birmingham Institute of Cardiovascular Sciences, City Hospital , Birmingham , UK.,b Cardiology Department, City Hospital , Birmingham , UK
| | - Chetan Varma
- b Cardiology Department, City Hospital , Birmingham , UK
| | - Gregory Y H Lip
- a University of Birmingham Institute of Cardiovascular Sciences, City Hospital , Birmingham , UK.,b Cardiology Department, City Hospital , Birmingham , UK
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11
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Barbato E, Barton PJ, Bartunek J, Huber S, Ibanez B, Judge DP, Lara-Pezzi E, Stolen CM, Taylor A, Hall JL. Review and Updates in Regenerative and Personalized Medicine, Preclinical Animal Models, and Clinical Care in Cardiovascular Medicine. J Cardiovasc Transl Res 2015; 8:466-74. [DOI: 10.1007/s12265-015-9657-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Accepted: 09/28/2015] [Indexed: 12/22/2022]
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