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Rocha HNM, Velasco LL, Batista GMS, Storch AS, Garcia VP, Teixeira GF, Mentzinger J, da Nóbrega ACL, Rocha NG. Ascorbic acid prevents stress-induced hypercoagulability in overweight and obese individuals. Sci Rep 2024; 14:3122. [PMID: 38326408 PMCID: PMC10850162 DOI: 10.1038/s41598-024-53794-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/05/2024] [Indexed: 02/09/2024] Open
Abstract
Ascorbic acid (AA) may contribute to restoring hemostatic balance after mental stress (MS) in overweight/obese adults. We aimed to determine the effects of AA administration on hemostatic responses to MS in overweight/obese men. Fourteen overweight/obesity men (27 ± 7 years; BMI: 29.7 ± 2.6 kg m-2) performed the Stroop color-word stress task for 5 min after non-simultaneous infusion of placebo (PL, 0.9% NaCl) and AA (3 g). Blood was collected at baseline, during MS, and 60 min after MS to measure: activated partial thromboplastin time, prothrombin time, and fibrinogen concentration, by coagulometer; platelet-derived microvesicles (PMV, mv/μL), by flow cytometry; nitrite (μM), by chemiluminescence. In PL session, MS led to decreases in PTs (stress, p = 0.03; 60 min, p < 0.001), PT-INR (stress, p < 0.001; 60 min, p < 0.01), aPTTs (60 min, p = 0.03), aPTT ratio (60 min, p = 0.04) and fibrinogen (60 min, p = 0.04), while increased PT activity (60 min, p = 0.01) when compared to baseline. Furthermore, AA increased PTs (60 min, p < 0.001), PT-INR (60 min, p = 0.03) and decreased PT activity (60 min, p < 0.001) and fibrinogen (stress, p = 0.04) when compared to PL. Nitrite was increased in response to stress during AA session (p < 0.001 vs PL). There was no difference in PMV. Ascorbic acid prevented the impaired hemostatic profile and improved nitrite response to stress in the overweight and obese adults.
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Affiliation(s)
- Helena N M Rocha
- Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, RJ, 24.020-150, Brazil
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, Rio de Janeiro, Brazil
- National Institute of Science and Technology (INCT) - Physical (In)Activity and Exercise, National Council for Scientific and Technological Development (CNPq), Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, Rio de Janeiro, Brazil
| | - Larissa L Velasco
- Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, RJ, 24.020-150, Brazil
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, Rio de Janeiro, Brazil
| | - Gabriel M S Batista
- Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, RJ, 24.020-150, Brazil
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, Rio de Janeiro, Brazil
| | - Amanda S Storch
- Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, RJ, 24.020-150, Brazil
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, Rio de Janeiro, Brazil
| | - Vinicius P Garcia
- Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, RJ, 24.020-150, Brazil
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, Rio de Janeiro, Brazil
- National Institute of Science and Technology (INCT) - Physical (In)Activity and Exercise, National Council for Scientific and Technological Development (CNPq), Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, Rio de Janeiro, Brazil
| | - Gabriel F Teixeira
- Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, RJ, 24.020-150, Brazil
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, Rio de Janeiro, Brazil
| | - Juliana Mentzinger
- Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, RJ, 24.020-150, Brazil
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, Rio de Janeiro, Brazil
| | - Antonio C L da Nóbrega
- Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, RJ, 24.020-150, Brazil
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, Rio de Janeiro, Brazil
- National Institute of Science and Technology (INCT) - Physical (In)Activity and Exercise, National Council for Scientific and Technological Development (CNPq), Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, Rio de Janeiro, Brazil
| | - Natália G Rocha
- Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, RJ, 24.020-150, Brazil.
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, Rio de Janeiro, Brazil.
- National Institute of Science and Technology (INCT) - Physical (In)Activity and Exercise, National Council for Scientific and Technological Development (CNPq), Rua Alameda Barros Terra, Sala 110, São Domingos, Niterói, Rio de Janeiro, Brazil.
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MicroRNA and Hemostasis Profile of Carotid Atherosclerosis. Int J Mol Sci 2022; 23:ijms231810974. [PMID: 36142883 PMCID: PMC9500617 DOI: 10.3390/ijms231810974] [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: 08/17/2022] [Revised: 09/12/2022] [Accepted: 09/16/2022] [Indexed: 11/24/2022] Open
Abstract
Carotid atherosclerosis (CA) is an important risk factor for ischemic stroke. We described the miRNA and hemostasis profile of patients with moderate and advanced stages of carotid atherosclerosis and elucidated potential correlations with hemostatic activation. A prospective case-control study included 61 patients with evidence of carotid atherosclerosis (via ultrasound). The study population was divided into groups depending on the degree of carotid artery stenosis: 60% or more (advanced) and <60% (moderate). All patients underwent the following blood tests: general blood test, hemostatic parameters and microRNA. Extraction of microRNA was performed using Leukocyte RNA Purification Kit (NORGEN Biotec Corp., Thorold, ON, Canada); miRNA quantification was performed via RT-PCR. Statistical analysis was performed in R programming language (v. 4.1.0) using RSudio. MicroRNA expression profile was different depending on CA degree. MiR-33a-5p/3p levels were higher in patients with ≥60% carotid stenosis (42.70 and 42.45 versus 38.50 and 38.50, respectively, p < 0.05). Almost complete separation can be visualized with the levels of miR-126-5p: 9.50 in the moderate CA group versus 5.25 in the advanced CA (p < 0.001). MiR-29-5p was higher in the moderate CA group: 28.60 [25.50;33.05] than in advanced CA group: 25.75 [24.38;29.50] (p = 0.086); miR-29-3p was also higher in the moderate CA group: 10.36 [8.60;14.99] than in advanced CA group: 8.46 [7.47;10.3] (p = 0.001). By-group pairwise correlation analyses revealed at least three clusters with significant positive correlations in the moderate CA group: miR-29-3p with factors V and XII (r = 0.53 and r = 0.37, respectively, p < 0.05); miR-21-5p with ADAMTS13, erythrocyte sedimentation rate and D-dimer (r = 0.42, r = 0.36 and r = 0.44, respectively, p < 0.05); stenosis degree with miR-33a-5p/3p and factor VIII levels (r = 0.43 (both) and r = 0.62, respectively, p < 0.05). Hemostasis parameters did not reveal significant changes in CA patients: the only statistically significant differences concerned factor VIII, plasminogen and (marginally significant) ADAMTS-13 and protein C. Down-regulation of miR-126-5p expression has been identified as a promising biomarker of advanced carotid atherosclerosis with high specificity and sensitivity. Correlation cluster analysis showed potential interplay between miRNAs and hemostatic activation in the setting of carotid atherosclerosis.
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Extracellular Vesicles as Drivers of Immunoinflammation in Atherothrombosis. Cells 2022; 11:cells11111845. [PMID: 35681540 PMCID: PMC9180657 DOI: 10.3390/cells11111845] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 05/30/2022] [Accepted: 06/01/2022] [Indexed: 02/07/2023] Open
Abstract
Atherosclerotic cardiovascular disease is the leading cause of morbidity and mortality all over the world. Extracellular vesicles (EVs), small lipid-bilayer membrane vesicles released by most cellular types, exert pivotal and multifaceted roles in physiology and disease. Emerging evidence emphasizes the importance of EVs in intercellular communication processes with key effects on cell survival, endothelial homeostasis, inflammation, neoangiogenesis, and thrombosis. This review focuses on EVs as effective signaling molecules able to both derail vascular homeostasis and induce vascular dysfunction, inflammation, plaque progression, and thrombus formation as well as drive anti-inflammation, vascular repair, and atheroprotection. We provide a comprehensive and updated summary of the role of EVs in the development or regression of atherosclerotic lesions, highlighting the link between thrombosis and inflammation. Importantly, we also critically describe their potential clinical use as disease biomarkers or therapeutic agents in atherothrombosis.
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Zhang R, Moscona A, Myndzar K, Luttrell-Williams E, Vanegas S, Jay MR, Calderon K, Berger JS, Heffron SP. More frequent olive oil intake is associated with reduced platelet activation in obesity. Nutr Metab Cardiovasc Dis 2021; 31:3322-3325. [PMID: 34627691 PMCID: PMC8919933 DOI: 10.1016/j.numecd.2021.08.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/11/2021] [Accepted: 08/16/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND AND AIMS Obesity is an independent risk factor for atherosclerotic cardiovascular disease (CVD), and platelet hyperactivation in obesity may contribute to this association. Olive oil consumption is associated with lower cardiovascular disease (CVD) risk in the general population. However, little is known for individuals with obesity. We investigated whether olive oil intake is associated with platelet activation in obesity. METHODS AND RESULTS We assessed platelet activation (surface P-selectin expression) with and without thrombin exposure and diet composition in 63 patients with severe obesity. Among 63 subjects with obesity, the mean age was 32.2 ± 8.0 years and BMI 44.1 ± 8.5 kg/m2. Olive oil intake was stratified into <1 time/week (n = 21), 1-3 times/week (n = 18), ≥4 times/week (n = 24). Strata did not differ by age, BMI or platelet count. Unstimulated P-selectin expression did not differ by olive oil consumption. Subjects with more frequent olive oil intake exhibited lower P-selectin expression on submaximal thrombin exposure. CONCLUSIONS More frequent olive oil intake is associated with reduced thrombin-induced platelet activation in obesity.
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Affiliation(s)
- Ruina Zhang
- Department of Medicine, Leon H. Charney Division of Cardiology, NYU Langone Medical Center, NYU School of Medicine, New York, NY, USA
| | - Alberto Moscona
- Department of Medicine, Leon H. Charney Division of Cardiology, NYU Langone Medical Center, NYU School of Medicine, New York, NY, USA
| | - Khrystyna Myndzar
- Department of Medicine, Leon H. Charney Division of Cardiology, NYU Langone Medical Center, NYU School of Medicine, New York, NY, USA
| | - Elliot Luttrell-Williams
- Department of Medicine, Leon H. Charney Division of Cardiology, NYU Langone Medical Center, NYU School of Medicine, New York, NY, USA
| | - Sally Vanegas
- Department of Medicine, NYU Langone Medical Center, NYU School of Medicine, New York, NY, USA
| | - Melanie R Jay
- Department of Medicine, NYU Langone Medical Center, NYU School of Medicine, New York, NY, USA
| | - Karry Calderon
- Department of Medicine, Leon H. Charney Division of Cardiology, NYU Langone Medical Center, NYU School of Medicine, New York, NY, USA
| | - Jeffrey S Berger
- Department of Medicine, Leon H. Charney Division of Cardiology, NYU Langone Medical Center, NYU School of Medicine, New York, NY, USA; NYU Center for the Prevention of Cardiovascular Disease, NYU Langone Medical Center, NYU School of Medicine, New York, NY, USA; Department of Surgery, NYU Langone Medical Center, NYU School of Medicine, New York, NY, USA
| | - Sean P Heffron
- Department of Medicine, Leon H. Charney Division of Cardiology, NYU Langone Medical Center, NYU School of Medicine, New York, NY, USA; NYU Center for the Prevention of Cardiovascular Disease, NYU Langone Medical Center, NYU School of Medicine, New York, NY, USA.
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Liu JT, Bao H, Fan YJ, Li ZT, Yao QP, Han Y, Zhang ML, Jiang ZL, Qi YX. Platelet-Derived Microvesicles Promote VSMC Dedifferentiation After Intimal Injury via Src/Lamtor1/mTORC1 Signaling. Front Cell Dev Biol 2021; 9:744320. [PMID: 34604241 PMCID: PMC8481604 DOI: 10.3389/fcell.2021.744320] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 08/26/2021] [Indexed: 11/19/2022] Open
Abstract
Phenotypic switch of vascular smooth muscle cells (VSMCs) is important in vascular remodeling which causes hyperplasia and restenosis after intimal injury. Platelets are activated at injured intima and secrete platelet-derived microvesicles (PMVs). Herein, we demonstrated the role of PMVs in VSMC phenotypic switch and the potential underlying mechanisms. In vivo, platelets were locally adhered and activated at intimal injury site, while Lamtor1 was promoted and VSMCs were dedifferentiated. PMVs, collected from collagen-activated platelets in vitro which mimicked collagen exposure during intimal injury, promoted VSMC dedifferentiation, induced Lamtor1 expression, and activated mTORC1 signaling, reflected by the phosphorylation of two downstream targets, i.e., S6K and 4E-BP1. Knockdown of Lamtor1 with small interfering RNA attenuated these processes induced by PMVs. Based on the previously published proteomic data, Ingenuity Pathway Analysis revealed that Src may participate in regulating effects of PMVs. Src inhibitor significantly reversed the effects of PMVs on VSMC dedifferentiation, Lamtor1 expression and mTORC1 activation. Furthermore, in SMC-specific Lamtor1 knockout mice, intimal hyperplasia was markedly attenuated after intimal injury compared with the wild type. Our data suggested that PMVs secreted by activated platelets promoted VSMC dedifferentiation via Src/Lamtor1/mTORC1 signaling pathway. Lamtor1 may be a potential therapeutic target for intimal hyperplasia after injury.
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Affiliation(s)
- Ji-Ting Liu
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Han Bao
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yang-Jing Fan
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Zi-Tong Li
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Qing-Ping Yao
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yue Han
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Ming-Liang Zhang
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Diabetes Institute, Shanghai Clinical Center for Diabetes, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Key Clinical Center for Metabolic Disease, Shanghai, China
| | - Zong-Lai Jiang
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Ying-Xin Qi
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
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Smith CW. Release of α-granule contents during platelet activation. Platelets 2021; 33:491-502. [PMID: 34569425 DOI: 10.1080/09537104.2021.1913576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Upon activation, platelets release a plethora of factors which help to mediate their dynamic functions in hemostasis, inflammation, wound healing, tumor metastasis and angiogenesis. The majority of these bioactive molecules are released from α-granules, which are unique to platelets, and contain an incredibly diverse repertoire of cargo including; integral membrane proteins, pro-coagulant molecules, chemokines, mitogenic, growth and angiogenic factors, adhesion proteins, and microbicidal proteins. Clinically, activation of circulating platelets has increasingly been associated with various disease states. Biomarkers indicating the level of platelet activation in patients can therefore be useful tools to evaluate risk factors to predict future complications and determine treatment strategies or evaluate antiplatelet therapy. The irreversible nature of α-granule secretion makes it ideally suited as a marker of platelet activation. This review outlines the release and contents of platelet α-granules, as well as the membrane bound, and soluble α-granule cargo proteins that can be used as biomarkers of platelet activation.
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Affiliation(s)
- Christopher W Smith
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, B15 2TT, Birmingham, UK
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Momi S, Falcinelli E, Petito E, Ciarrocca Taranta G, Ossoli A, Gresele P. Matrix metalloproteinase-2 on activated platelets triggers endothelial PAR-1 initiating atherosclerosis. Eur Heart J 2021; 43:504-514. [PMID: 34529782 DOI: 10.1093/eurheartj/ehab631] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 04/02/2021] [Accepted: 09/09/2021] [Indexed: 11/12/2022] Open
Abstract
AIMS Platelets participate in atherogenesis with mechanisms not yet fully clarified. Vascular wall MMP-2 is involved in the arterial remodelling accompanying atherosclerosis. Platelets contain and release MMP-2 but no informations are available on its role in atherosclerotic lesion formation. METHODS AND RESULTS We generated double knockout mice lacking the LDL receptor and MMP-2 only in circulating blood cells showing that they develop significantly lesser femoral intima thickening after photochemical-induced arterial damage and atherosclerotic lesions in the aorta, measured by the en face method, after 4 months of atherogenic diet. Moreover, repeated transfusions of autologous-activated platelets in LDLR-/- mice on atherogenic diet significantly enhanced the extension of aortic atherosclerotic lesions while transfusion of activated platelets from MMP-2-/- mice did not. In vitro coincubation studies showed that platelet-derived MMP-2 plays a pivotal role in the development and progression of atherosclerosis through a complex cross-talk between activated platelets, monocyte/macrophages, and endothelial cells. Translational studies in patients with CAD and chronic HIV infection showed that platelet surface expression of MMP-2 highly significantly correlated with the degree of carotid artery stenosis. CONCLUSION We show a previously unknown mechanism of the pathway through which platelets expressing MMP-2 trigger the initial phases of atherosclerosis and provide a mechanism showing that they activate endothelial PAR-1 triggering endothelial p38MAPK signalling and the expression of adhesion molecules. The development of drugs blocking selectively platelet MMP-2 or its expression may represent a new approach to the prevention of atherosclerosis.
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Affiliation(s)
- Stefania Momi
- Department of Medicine and Surgery, Section of Internal and Cardiovascular Medicine, University of Perugia, Strada Vicinale Via delle Corse, Perugia 06132, Italy
| | - Emanuela Falcinelli
- Department of Medicine and Surgery, Section of Internal and Cardiovascular Medicine, University of Perugia, Strada Vicinale Via delle Corse, Perugia 06132, Italy
| | - Eleonora Petito
- Department of Medicine and Surgery, Section of Internal and Cardiovascular Medicine, University of Perugia, Strada Vicinale Via delle Corse, Perugia 06132, Italy
| | - Giulia Ciarrocca Taranta
- Department of Medicine and Surgery, Section of Internal and Cardiovascular Medicine, University of Perugia, Strada Vicinale Via delle Corse, Perugia 06132, Italy
| | - Alice Ossoli
- Center E. Grossi Paoletti, Department of Pharmacologic and Biomolecular Science, University of Milan, via delle Corse, Milan 06132, Italy
| | - Paolo Gresele
- Department of Medicine and Surgery, Section of Internal and Cardiovascular Medicine, University of Perugia, Strada Vicinale Via delle Corse, Perugia 06132, Italy
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Yıldırım A, Kücükosmanoglu M, Koyunsever NY, Cekici Y, Dogdus M, Saracoglu E, Kilic S. Association between serum SCUBE1 levels and thrombus burden in patients with ST-segment elevation myocardial infarction. Acta Cardiol 2021; 76:777-784. [PMID: 33283652 DOI: 10.1080/00015385.2020.1852753] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
INTRODUCTION The signal peptide-CUB-EGF domain-containing protein-1 (SCUBE1) is a recently available biomarker which is expressed by activated and adhered platelets. In present study, we aimed to investigate the association between SCUBE1 levels and thrombus burden in patients with ST elevation myocardial infarction (STEMI) who underwent primary percutaneous coronary intervention (PPCI). METHODS A total of 88 patients who were diagnosed with STEMI and underwent PPCI were prospectively included between July 2019 and August 2019. Blood samples were collected for routine biochemistry and serum SCUBE1 levels before PPCI and antiplatelet therapy. Angiographic coronary thrombus burden was classified based on thrombolysis in myocardial infarction (TIMI) thrombus grades. We formed two groups based on the thrombus grade: 37 (42%) patients had high thrombus burden whereas 51 (58%) patients had low thrombus burden. RESULTS The mean age of study population was 58.2 ± 11.8 years (34% female). The mean peak troponin I level, SCUBE1 level, SYNTAX score, and pain-to-balloon time were significantly higher in the high thrombus burden group compared to the low thrombus burden group (p < .05, for all). In ROC analysis, SCUBE1 level >65.63 ng/dL had a sensitivity of 91.9% and a specificity of 76.6% to predict high thrombus burden (AUC: 0.9256; p < .001). In multivariate analysis, SCUBE1 level (HR: 1.133, p = .004) and troponin (HR: 1.002; 95% CI 1.001-1.004, p = .003) were independent predictors of high thrombus burden. CONCLUSION In the present study, we showed that SCUBE1, a novel platelet-endothelial adhesion molecule and a marker of platelet activation, is an independent predictor of high thrombus burden in patients with STEMI.
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Affiliation(s)
- Arafat Yıldırım
- Department of Cardiology, University of Health Sciences – Adana Health Practice and Research Center, Adana, Turkey
| | - Mehmet Kücükosmanoglu
- Department of Cardiology, University of Health Sciences – Adana Health Practice and Research Center, Adana, Turkey
| | - Nermin Yildiz Koyunsever
- Department of Cardiology, University of Health Sciences – Adana Health Practice and Research Center, Adana, Turkey
| | - Yusuf Cekici
- Department of Cardiology, Uşak University Research and Training Hospital, Uşak, Turkey
| | - Mustafa Dogdus
- Department of Cardiology, Mehmet Akif Inan Research and Training Hospital, Şanlıurfa, Turkey
| | - Erhan Saracoglu
- Department of Cardiology, University of Health Sciences, Yıldırım Beyazıt Dışkapı Research and Training Hospital, Ankara, Turkey
| | - Salih Kilic
- Department of Cardiology, University of Health Sciences – Adana Health Practice and Research Center, Adana, Turkey
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Georgescu A, Simionescu M. Extracellular Vesicles: Versatile Nanomediators, Potential Biomarkers and Therapeutic Agents in Atherosclerosis and COVID-19-Related Thrombosis. Int J Mol Sci 2021; 22:5967. [PMID: 34073119 PMCID: PMC8198837 DOI: 10.3390/ijms22115967] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/28/2021] [Accepted: 05/28/2021] [Indexed: 02/06/2023] Open
Abstract
Cells convey information among one another. One instrument employed to transmit data and constituents to specific (target) cells is extracellular vesicles (EVs). They originate from a variety of cells (endothelial, immune cells, platelets, mesenchymal stromal cells, etc.), and consequently, their surface characteristics and cargo vary according to the paternal cell. The cargo could be DNA, mRNA, microRNA, receptors, metabolites, cytoplasmic proteins, or pathological molecules, as a function of which EVs exert different effects upon endocytosis in recipient cells. Recently, EVs have become important participants in a variety of pathologies, including atherogenesis and coronavirus disease 2019 (COVID-19)-associated thrombosis. Herein, we summarize recent advances and some of our own results on the role of EVs in atherosclerotic cardiovascular diseases, and discuss their potential to function as signaling mediators, biomarkers and therapeutic agents. Since COVID-19 patients have a high rate of thrombotic events, a special section of the review is dedicated to the mechanism of thrombosis and the possible therapeutic potential of EVs in COVID-19-related thrombosis. Yet, EV mechanisms and their role in the transfer of information between cells in normal and pathological conditions remain to be explored.
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Affiliation(s)
| | - Maya Simionescu
- Institute of Cellular Biology and Pathology ‘Nicolae Simionescu’ of the Romanian Academy, 050568 Bucharest, Romania;
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Szilágyi B, Fejes Z, Rusznyák Á, Fenyvesi F, Pócsi M, Halmi S, Griger Z, Kunapuli SP, Kappelmayer J, Nagy B. Platelet Microparticles Enriched in miR-223 Reduce ICAM-1-Dependent Vascular Inflammation in Septic Conditions. Front Physiol 2021; 12:658524. [PMID: 34135769 PMCID: PMC8201999 DOI: 10.3389/fphys.2021.658524] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 04/21/2021] [Indexed: 12/19/2022] Open
Abstract
In the process of sepsis, activated platelets shed microvesicles containing microRNAs (miRNAs), which can be internalized by distinct recipient cells in circulation, consequently eliciting a potent capability to regulate their cellular functions in different diseases. In the present study, activated human platelets transferring miR-223 into endothelial cells via platelet-derived microparticles (PMPs) was investigated in vitro during septic conditions with a proposed mechanism involving in downregulation of the enhanced expression of intercellular adhesion molecule-1 (ICAM-1). The uptake of PMPs encasing miR-223 and the adhesion of peripheral blood mononuclear cells (PBMCs) on human coronary artery endothelial cells (HCAECs) were observed by immunofluorescence microscopy upon co-culture with PMPs isolated from sepsis or control plasma. The expression of miR-223-3p and its gene target ICAM1 in HCAECs were quantified by RT-qPCR and ELISA after the cells were incubated with septic or control PMPs, whose levels were induced with thrombin-receptor activating peptide (TRAP). Leukocyte-depleted platelets (LDPs) from septic patients showed a decreased miR-223 level, while septic plasma and PMPs revealed an elevated miRNA level compared to control samples. Similarly, TRAP-activated LDPs demonstrated a reduced intracellular miR-223 expression, while increased levels in the supernatant and PMP isolates were observed vs. untreated samples. Furthermore, TNF-α alone resulted in decreased miR-223 and elevated ICAM1 levels in HCAECs, while PMPs raised the miRNA level that was associated with downregulated ICAM1 expression at both mRNA and protein levels under TNF-α treatment. Importantly, miR-223 was turned out not to be newly synthesized as shown in unchanged pre-miR-223 level, and mature miR-223 expression was also elevated in the presence of PMPs in HCAECs after transfection with Dicer1 siRNA. In addition, septic PMPs containing miR-223 decreased ICAM1 with a reduction of PBMC binding to HCAECs. In conclusion, septic platelets released PMPs carrying functional miR-223 lower ICAM1 expression in endothelial cells, which may be a protective role against excessive sepsis-induced vascular inflammation.
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Affiliation(s)
- Bernadett Szilágyi
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Kálmán Laki Doctoral School of Biomedical and Clinical Sciences, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Zsolt Fejes
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Kálmán Laki Doctoral School of Biomedical and Clinical Sciences, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Ágnes Rusznyák
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary.,Doctoral School of Pharmaceutical Sciences, University of Debrecen, Debrecen, Hungary
| | - Ferenc Fenyvesi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary.,Doctoral School of Pharmaceutical Sciences, University of Debrecen, Debrecen, Hungary
| | - Marianna Pócsi
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Sándor Halmi
- Faculty of Medicine, Institute of Internal Medicine, University of Debrecen, Debrecen, Hungary
| | - Zoltán Griger
- Faculty of Medicine, Institute of Internal Medicine, University of Debrecen, Debrecen, Hungary
| | - Satya P Kunapuli
- Department of Physiology and Sol Sherry Thrombosis Center, Temple University School of Medicine, Philadelphia, PA, United States
| | - János Kappelmayer
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Kálmán Laki Doctoral School of Biomedical and Clinical Sciences, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Béla Nagy
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Kálmán Laki Doctoral School of Biomedical and Clinical Sciences, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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11
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Bahmani B, Gong H, Luk BT, Haushalter KJ, DeTeresa E, Previti M, Zhou J, Gao W, Bui JD, Zhang L, Fang RH, Zhang J. Intratumoral immunotherapy using platelet-cloaked nanoparticles enhances antitumor immunity in solid tumors. Nat Commun 2021; 12:1999. [PMID: 33790276 PMCID: PMC8012593 DOI: 10.1038/s41467-021-22311-z] [Citation(s) in RCA: 137] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 03/05/2021] [Indexed: 12/22/2022] Open
Abstract
Intratumoral immunotherapy is an emerging modality for the treatment of solid tumors. Toll-like receptor (TLR) agonists have shown promise for eliciting immune responses, but systemic administration often results in the development of adverse side effects. Herein, we investigate whether localized delivery of the TLR agonist, resiquimod (R848), via platelet membrane-coated nanoparticles (PNP-R848) elicits antitumor responses. The membrane coating provides a means of enhancing interactions with the tumor microenvironment, thereby maximizing the activity of R848. Intratumoral administration of PNP-R848 strongly enhances local immune activation and leads to complete tumor regression in a colorectal tumor model, while providing protection against repeated tumor re-challenges. Moreover, treatment of an aggressive breast cancer model with intratumoral PNP-R848 delays tumor growth and inhibits lung metastasis. Our findings highlight the promise of locally delivering immunostimulatory payloads using biomimetic nanocarriers, which possess advantages such as enhanced biocompatibility and natural targeting affinities.
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Affiliation(s)
| | - Hua Gong
- Department of NanoEngineering, University of California San Diego, La Jolla, CA, 92093, USA
| | - Brian T Luk
- Cello Therapeutics, Inc., San Diego, CA, 92121, USA
| | | | | | - Mark Previti
- Cello Therapeutics, Inc., San Diego, CA, 92121, USA
| | - Jiarong Zhou
- Department of NanoEngineering, University of California San Diego, La Jolla, CA, 92093, USA
| | - Weiwei Gao
- Department of NanoEngineering, University of California San Diego, La Jolla, CA, 92093, USA
| | - Jack D Bui
- Department of Pathology, University of California San Diego, La Jolla, CA, 92093, USA
| | - Liangfang Zhang
- Department of NanoEngineering, University of California San Diego, La Jolla, CA, 92093, USA
| | - Ronnie H Fang
- Department of NanoEngineering, University of California San Diego, La Jolla, CA, 92093, USA.
| | - Jie Zhang
- Cello Therapeutics, Inc., San Diego, CA, 92121, USA.
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12
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Konkoth A, Saraswat R, Dubrou C, Sabatier F, Leroyer AS, Lacroix R, Duchez AC, Dignat-George F. Multifaceted role of extracellular vesicles in atherosclerosis. Atherosclerosis 2020; 319:121-131. [PMID: 33261815 DOI: 10.1016/j.atherosclerosis.2020.11.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 09/13/2020] [Accepted: 11/05/2020] [Indexed: 12/19/2022]
Abstract
Extracellular vesicles (EVs) are small vesicles released by the majority of cells in response to cell activation or death stimuli. They are grouped as small EVs or exosomes, large EVs such as microvesicles (MVs) and apoptotic bodies, resulting from distinct mechanisms of generation. EVs are released into the extracellular space, in most human biological fluids and tissues, including atherosclerotic plaques. They transport complex cargo of bioactive molecules, including proteins, lipids and genetic material and are therefore involved in pathophysiological pathways of cell-cell communication. Indeed, EVs are involved in several processes such as inflammation, coagulation, vascular dysfunction, angiogenesis and senescence, contributing to the initiation and progression of atherothrombotic diseases. Consequently, they behave as a determinant of atherosclerotic plaque vulnerability leading to major cardiovascular disorders. Over the last decade, the field of EVs research has grown, highlighting their involvement in atherosclerosis. However, limitations in both detection methodologies and standardisation have hindered implementation of EVs in the clinical settings. This review summarizes the effect of EVs in atherosclerosis development, progression and severity, with specific attention devoted to their ambivalent roles in senescence and hemostasis. This review will also highlight the role of MVs as multifaceted messengers, able to promote or to attenuate atherosclerosis progression. Finally, we will discuss the main technical challenges and prerequisites of standardization for driving EVs to the clinics and delineate their relevance as emergent biomarkers and innovative therapeutic approaches in atherosclerosis.
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Affiliation(s)
- Akhil Konkoth
- Aix Marseille University, INSERM, INRAE, C2VN, Marseille, France
| | - Ronald Saraswat
- Aix Marseille University, INSERM, INRAE, C2VN, Marseille, France
| | - Cléa Dubrou
- Aix Marseille University, INSERM, INRAE, C2VN, Marseille, France; Department of Hematology and Vascular Biology, CHU La Conception, APHM, Marseille, France
| | - Florence Sabatier
- Aix Marseille University, INSERM, INRAE, C2VN, Marseille, France; Department of Hematology and Vascular Biology, CHU La Conception, APHM, Marseille, France
| | | | - Romaric Lacroix
- Aix Marseille University, INSERM, INRAE, C2VN, Marseille, France; Department of Hematology and Vascular Biology, CHU La Conception, APHM, Marseille, France
| | | | - Francoise Dignat-George
- Aix Marseille University, INSERM, INRAE, C2VN, Marseille, France; Department of Hematology and Vascular Biology, CHU La Conception, APHM, Marseille, France
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13
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Zhang J, Ding Y, Jiang D, Xie J, Liu Y, Ma J, Mu Y, Zhang X, Yu C, Zhang Y, Yi X, Zhou Z, Fang L, Shen S, Yang Y, Cheng K, Zhuang R, Zhang Y. Deficiency of platelet adhesion molecule CD226 causes megakaryocyte development and platelet hyperactivity. FASEB J 2020; 34:6871-6887. [PMID: 32248623 DOI: 10.1096/fj.201902142r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 11/27/2019] [Accepted: 03/16/2020] [Indexed: 12/17/2022]
Abstract
This study used constitutive CD226 gene knockout (KO) mice as a model to investigate the functions and mechanisms of CD226 in megakaryocyte (MK) maturation and platelet activation. Although CD226 deficiency did not cause MK polyploidization or platelet granule abnormalities, increased MK counts were detected in the femora bone marrow (BM) and spleen of CD226 KO mice. Particularly, CD226 KO mice have a more extensive membrane system in MKs and platelets than wild-type (WT) mice. We also demonstrated that CD226 KO mice displayed increased platelet counts, shortened bleeding time, and enhanced platelet aggregation. CD226 KO platelets had an increased mature platelet ratio compared to the control platelets. In addition, the observed reduction in bleeding time may be due to decreased nitric oxide (NO) production in the platelets. Platelet-specific CD226-deficient mice showed similar increased MK counts, shortened bleeding time, enhanced platelet aggregation, and decreased NO production in platelets. Furthermore, we performed middle cerebral artery occlusion-reperfusion surgery on WT and CD226 KO mice to explore the potential effect of CD226 on acute ischemia-reperfusion injury; the results revealed that CD226 deficiency led to significantly increased infarct area. Thus, CD226 is a promising candidate for the treatment of thrombotic disorders.
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Affiliation(s)
- Jinxue Zhang
- Orthopedic Department of Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Yong Ding
- Orthopedic Department of Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Dongxu Jiang
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Jiangang Xie
- Department of Emergency, Fourth Military Medical University, Xi'an, China
| | - Yongming Liu
- Orthopedic Department of Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Jingchang Ma
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Yang Mu
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Xuexin Zhang
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Chaoping Yu
- Department of Emergency, Fourth Military Medical University, Xi'an, China
| | - Yun Zhang
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Xin Yi
- Orthopedic Department of Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Ziqing Zhou
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Liang Fang
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Shen Shen
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Yixin Yang
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Kun Cheng
- Transplant Immunology Laboratory, Fourth Military Medical University, Xi'an, China
| | - Ran Zhuang
- Department of Immunology, Fourth Military Medical University, Xi'an, China.,Transplant Immunology Laboratory, Fourth Military Medical University, Xi'an, China
| | - Yuan Zhang
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China
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14
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Bratseth V, Margeirsdottir HD, Chiva-Blanch G, Heier M, Solheim S, Arnesen H, Dahl-Jørgensen K, Seljeflot I. Annexin V + Microvesicles in Children and Adolescents with Type 1 Diabetes: A Prospective Cohort Study. J Diabetes Res 2020; 2020:7216863. [PMID: 32309448 PMCID: PMC7149325 DOI: 10.1155/2020/7216863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 02/13/2020] [Accepted: 02/21/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Type 1 diabetes is a chronic disease including hyperglycemia and accelerated atherosclerosis, with high risk of micro- and macrovascular complications. Circulating microvesicles (cMVs) are procoagulant cell fragments shed during activation/apoptosis and discussed to be markers of vascular dysfunction and hypercoagulability. Limited knowledge exists on hypercoagulability in young diabetics. We aimed to investigate cMVs over a five-year period in children/adolescents with type 1 diabetes compared with controls and any associations with glycemic control and cardiovascular risk factors. We hypothesized increased shedding of cMVs in type 1 diabetes in response to vascular activation. METHODS The cohort included type 1 diabetics (n = 40) and healthy controls (n = 40), mean age 14 years (range 11) at inclusion, randomly selected from the Norwegian Atherosclerosis and Childhood Diabetes (ACD) study. Citrated plasma was prepared and stored at -80°C until cMV analysis by flow cytometry. RESULTS Comparable levels of Annexin V (AV+) cMVs were observed at inclusion. At five-year follow-up, total AV+ cMVs were significantly lower in subjects with type 1 diabetes compared with controls; however, no significant differences were observed after adjusting for covariates. In the type 1 diabetes group, the total AV+, tissue factor-expressing AV+/CD142+, neutrophil-derived AV+/CD15+ and AV+/CD45+/CD15+, and endothelial-derived AV+/CD309+ and CD309+/CD34+ cMVs were inversely correlated with HbA1c (r = -0.437, r = -0.515, r = -0.575, r = -0.529, r = -0.416, and r = -0.445, respectively; all p ≤ 0.01), however, only at inclusion. No significant correlations with cardiovascular risk factors were observed. CONCLUSIONS Children/adolescents with type 1 diabetes show similar levels of AV+ cMVs as healthy controls and limited associations with glucose control. This indicates that our young diabetics on intensive insulin treatment have preserved vascular homeostasis and absence of procoagulant cMVs.
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Affiliation(s)
- Vibeke Bratseth
- Center for Clinical Heart Research, Department of Cardiology, Oslo University Hospital Ullevaal, Oslo, Norway
- Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Hanna D. Margeirsdottir
- Pediatric Department, Oslo University Hospital Ullevaal, Oslo, Norway
- Oslo Diabetes Research Centre, Oslo, Norway
| | - Gemma Chiva-Blanch
- Cardiovascular Program ICCC, Institut de Recerca Hospital Santa Creu i Sant Pau-IIB Sant Pau, Sant Antoni Maria Claret, 167, 08025 Barcelona, Spain
- Endocrinology and Nutrition Department Institut d' Investigacions Biomediques August Pi Sunyer (IDIBAPS), Hospital Clinic, Barcelona, Spain
- Centro de Investigacion Biomedica en Red Fisiopatologia de la Obesidad y Nutrition (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Spain
| | - Martin Heier
- Pediatric Department, Oslo University Hospital Ullevaal, Oslo, Norway
- Oslo Diabetes Research Centre, Oslo, Norway
| | - Svein Solheim
- Center for Clinical Heart Research, Department of Cardiology, Oslo University Hospital Ullevaal, Oslo, Norway
| | - Harald Arnesen
- Center for Clinical Heart Research, Department of Cardiology, Oslo University Hospital Ullevaal, Oslo, Norway
- Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Knut Dahl-Jørgensen
- Faculty of Medicine, University of Oslo, Oslo, Norway
- Pediatric Department, Oslo University Hospital Ullevaal, Oslo, Norway
- Oslo Diabetes Research Centre, Oslo, Norway
| | - Ingebjørg Seljeflot
- Center for Clinical Heart Research, Department of Cardiology, Oslo University Hospital Ullevaal, Oslo, Norway
- Faculty of Medicine, University of Oslo, Oslo, Norway
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15
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Effects of an acute bout of exercise on circulating extracellular vesicles: tissue-, sex-, and BMI-related differences. Int J Obes (Lond) 2019; 44:1108-1118. [PMID: 31578459 DOI: 10.1038/s41366-019-0460-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 09/03/2019] [Accepted: 09/12/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Exercise is recognized to evoke multisystemic adaptations that, particularly in obese subjects, reduce body weight, improve glucometabolic control, counteract sarcopenia, and lower the risk of cardiometabolic diseases. Understanding the molecular and cellular mechanisms of exercise-induced benefits is of great interest due to the therapeutic implications against obesity. OBJECTIVES AND METHODS The aim of the present study was to evaluate time-related changes in size distribution and cell origin of extracellular vesicles (EVs) in obese and normal-weight subjects who underwent a moderate-intensity exercise on a treadmill (at 60% of their VO2max). Blood samples were drawn before, immediately at the end of the exercise and during the postexercise recovery period (3 and 24 h). Circulating EVs were analyzed by a nanoparticle tracking analysis and flow cytometry after labeling with the following cell-specific markers: CD14 (monocyte/macrophage), CD61 (platelet), CD62E (activated endothelium), CD105 (total endothelium), SCGA (skeletal muscle), and FABP (adipose tissue). RESULTS In all subjects, acute exercise reduced the release of total (i.e., 30-700 nm) EVs in circulation, predominantly EVs in the microvesicle size range (i.e., 130-700 nm EVs). The postexercise release of microvesicles was higher in normal-weight than obese subjects; after exercise, circulating levels of exosomes (i.e., 30-130 nm EVs) and microvesicles were, respectively, lower and higher in females than males. In all experimental subgroups (males vs. females and obese vs. normal-weight subjects), acute exercise reduced and increased, respectively, CD61 + and SCGA + EVs, being the effect on CD61 + EVs prolonged up to 24 h after the end of the test with subjects in resting conditions. Total EVs, exosomes, and CD61 + EVs were associated with HOMA-IR. CONCLUSIONS Though preliminary, the results of the present study show that a single bout of acute exercise modulates the release of EVs in circulation, which are tissue-, sex-, and BMI specific, suggesting that the exercise-related benefits might depend upon a complex interaction of tissue, endocrine, and metabolic factors.
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16
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Agouni A, Parray AS, Akhtar N, Mir FA, Bourke PJ, Joseph S, Morgan DM, Santos MD, Wadiwala MF, Kamran S, Sivaraman SK, Shuaib A. There Is Selective Increase in Pro-thrombotic Circulating Extracellular Vesicles in Acute Ischemic Stroke and Transient Ischemic Attack: A Study of Patients From the Middle East and Southeast Asia. Front Neurol 2019; 10:251. [PMID: 30941096 PMCID: PMC6434679 DOI: 10.3389/fneur.2019.00251] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 02/25/2019] [Indexed: 12/14/2022] Open
Abstract
Stroke attacks were found to be present at a younger age in patients from Southeast Asia (SE) and the Middle East (ME) resident in the state of Qatar. Extracellular vesicles (EVs), which are small membrane vesicles with pro-thrombotic properties, may contribute to the high risk of stroke in this population. Thus, total and cell-specific medium size EVs were counted by flow cytometry in platelet-free plasma from healthy volunteers and patients with transient ischemic attacks (TIA) and acute ischemic stroke (AIS) from SE and ME. Acutely, within 48 h of attacks, there was an increase in total endothelial EVs in TIA (6.73 ± 1.77; P = 0.0156; n = 21) and AIS (11.23 ± 1.95; P = 0.0007; n = 66) patients compared to controls (2.04 ± 0.78; n = 24). Similar increases were also evident in EVs originating from platelets, erythrocytes, granulocytes, and leukocytes. Compared to controls, there was also an increase in EVs derived from activated endothelial cells, platelets, granulocytes, leukocytes, and pro-coagulant EVs (Annexin V+) at 5 and 30-days following the acute events, while a decrease was observed in erythrocyte-derived EVs. This is the first study characterizing EVs in TIA and AIS patients from ME and SE showing an increase in EVs associated with endothelial and platelet cell activation, which may contribute to the elevated risk of stroke at a younger age in this population.
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Affiliation(s)
- Abdelali Agouni
- Department of Pharmaceutical Sciences, College of Pharmacy, Qatar University, Doha, Qatar
| | - Aijaz S Parray
- The Stroke Program, The Neuroscience Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Naveed Akhtar
- The Stroke Program, The Neuroscience Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Fayaz A Mir
- Interim Translational Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Paula J Bourke
- The Stroke Program, The Neuroscience Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Sujata Joseph
- The Stroke Program, The Neuroscience Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Deborah M Morgan
- The Stroke Program, The Neuroscience Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Mark D Santos
- The Stroke Program, The Neuroscience Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Muhammad F Wadiwala
- The Stroke Program, The Neuroscience Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Saadat Kamran
- The Stroke Program, The Neuroscience Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Siveen K Sivaraman
- Interim Translational Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Ashfaq Shuaib
- The Stroke Program, The Neuroscience Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar.,Department of Medicine (Neurology), University of Alberta, Edmonton, AB, Canada
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17
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Molecular Mechanisms Underpinning Microparticle-Mediated Cellular Injury in Cardiovascular Complications Associated with Diabetes. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:6475187. [PMID: 30915196 PMCID: PMC6399542 DOI: 10.1155/2019/6475187] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Accepted: 01/13/2019] [Indexed: 12/15/2022]
Abstract
Microparticles (MPs) are small vesicles shed from the cytoplasmic membrane of healthy, activated, or apoptotic cells. MPs are very heterogeneous in size (100–1,000 nm), and they harbor proteins and surface antigens specific to cells they originate from. Virtually, all cells can shed MPs, and therefore, they can be found in all body fluids, but also entrapped in tissues. Of interest and because of their easy detection using a variety of techniques, circulating MPs were recognized as biomarkers for cell activation. MPs were also found to mediate critical actions in intercellular communication and transmitting biological messages by acting as paracrine vehicles. High plasma numbers of MPs were reported in many cardiovascular and metabolic disturbances that are closely associated with insulin resistance and low-grade inflammation and have been linked to adverse actions on cardiovascular function. This review highlights the involvement of MPs in cardiovascular complications associated with diabetes and discusses the molecular mechanisms that underpin the pathophysiological role of MPs in the onset and progression of cellular injury in diabetes.
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18
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Rosińska J, Ambrosius W, Maciejewska J, Narożny R, Kozubski W, Łukasik M. Association of platelet-derived microvesicles and their phenotypes with carotid atherosclerosis and recurrent vascular events in patients after ischemic stroke. Thromb Res 2019; 176:18-26. [PMID: 30763823 DOI: 10.1016/j.thromres.2019.01.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 12/21/2018] [Accepted: 01/21/2019] [Indexed: 01/28/2023]
Abstract
INTRODUCTION Platelet-derived microvesicles (pMVs) exhibit procoagulant and proinflammatory properties and play a role in the development and progression of atherosclerosis. The study examined the association between the total number of pMVs and their phenotypes with carotid atherosclerosis and recurrent vascular events (VEs) in patients in the convalescent phase of ischemic stroke (IS). MATERIALS AND METHODS The study group consisted of 72 patients with IS secondary to large artery atherosclerosis (LAA) (n = 40) and small arteries occlusion (SAO) (n = 32) and 69 matched cardiovascular disease risk-factor (RF) controls. Total pMV number, defined as CD61+ microvesicles (MVs), and their phenotypes, defined as the surface expression of proinflammatory (CD40L, CD62P, CD31) and procoagulant (PS, PAC-1) markers, were characterized and quantified using flow cytometry. The mean common carotid intima-media thickness (CCA mean IMT), maximal common carotid IMT (CCA max IMT) and maximal bifurcation IMT (BIF max IMT) were measured bilaterally using B-mode, color Doppler ultrasonography. All study subjects were observed for one-year to establish the occurrence of VEs. RESULTS No differences in pMV parameters between LAA and SAO stroke subjects and between stroke subgroups and controls were found. Stroke patients with carotid atherosclerosis exhibited higher concentration of CD62P+/CD61+ and PAC-1+/CD61+ MVs compared to patients without the atherosclerosis. Positive associations between total number of pMVs, AnV+ MVs and AnV+/CD61+ MVs and atherosclerotic thickening of carotid intima-media in stroke patients were found. Elevated concentration of AnV+/CD61+, PAC-1+/CD61+, CD61P+/CD61+ and CD31+/CD61+ MVs, were revealed in stroke patients who suffered from recurrent VE in one-year follow-up period. Negative correlation of pMVs and CD62P+/CD61+ MVs concentration as well as percentage of total CD61+ in AnV+ population of MVs and time elapsed from IS in convalescent stroke subjects was revealed. CONCLUSION Our results confirm positive correlations between total pMV number, the number of PAC-1+/CD61+ and CD62+/CD61+ MVs and carotid atherosclerosis in stroke subjects. Some pMV parameters may exhibit a predictive value for the next VE in groups with a history of stroke. pMVs and some of their phenotypes decline over time elapsed from stroke in convalescent stroke subjects.
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Affiliation(s)
- Justyna Rosińska
- Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland.
| | - Wojciech Ambrosius
- Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland
| | - Joanna Maciejewska
- Laboratory of Flow Cytometry and Vascular Biology, Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland
| | - Robert Narożny
- Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland
| | - Wojciech Kozubski
- Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland
| | - Maria Łukasik
- Laboratory of Flow Cytometry and Vascular Biology, Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland
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19
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Heffron SP, Marier C, Parikh M, Fisher EA, Berger JS. Severe obesity and bariatric surgery alter the platelet mRNA profile. Platelets 2019; 30:967-974. [PMID: 30388921 PMCID: PMC6642854 DOI: 10.1080/09537104.2018.1536261] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Mechanisms explaining the relationship between obesity and cardiovascular disease (CVD) are needed. Despite growing recognition of the importance of the anucleate platelet transcriptome, low levels of RNA in platelets make assessment difficult. We sought to perform unbiased platelet RNA profiling in obesity by performing a prospective study of severe obesity and weight loss via bariatric surgery on platelet characteristics and mRNA profile in 26 pre-menopausal, non-diabetic women (31.6 ± 8.4 years; BMI 43.0 ± 6.5 kg/m2) who underwent sleeve gastrectomy. Totally, 10 women of similar age with normal BMI served as controls. Platelet activation via flow cytometry was assessed before and after surgery. RNA-sequencing (RNAseq) was performed on platelet isolates from a subset of 13 subjects (eight obese women and five normal-BMI subjects). Platelet count, size, and age did not differ between control and obese women. However, platelet surface P-selectin and CD40 were higher in obesity. RNAseq demonstrated 629 differentially abundant transcripts in obesity. Notably, S100A9 and AGER, established markers of cardiovascular risk, were two of the most highly upregulated transcripts (each > 2.5 fold). At 6 months post-operatively, subjects lost 26.1 ± 5.8% body weight and inducible platelet P-selectin expression was reduced. Expression of 170 transcripts was affected by surgery, but only a small fraction (46/629) were genes found altered in obesity. We demonstrate that obesity is associated with an altered platelet transcriptome and increased platelet activation, which is partly attenuated by bariatric surgery. These observations suggest that platelets may contribute to increased cardiovascular risk in obesity through a variety of mechanisms.
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Affiliation(s)
- Sean P Heffron
- Department of Medicine, Leon H. Charney Division of Cardiology and the Center for the Prevention of Cardiovascular Disease;,Address for Correspondence: Sean P. Heffron MD, MS, MSc, Instructor in Medicine, Leon H. Charney Division of Cardiology, New York University School of Medicine, 227 East 30th St., #834, New York, NY 10016, Tel: -1- 646-501-2735,
| | - Christian Marier
- Genome Technology Core Laboratory, New York University School of Medicine, New York, NY
| | - Manish Parikh
- Department of Surgery, New York University Langone Medical Center
| | - Edward A Fisher
- Department of Medicine, Leon H. Charney Division of Cardiology and the Center for the Prevention of Cardiovascular Disease
| | - Jeffrey S Berger
- Department of Medicine, Leon H. Charney Division of Cardiology and the Center for the Prevention of Cardiovascular Disease;,Department of Surgery, Division of Vascular Surgery, New York University Langone Medical Center
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20
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Ranucci M, Aloisio T, Dedda UD, La Rovere MT, De Arroyabe BML, Baryshnikova E. Platelet reactivity in overweight and obese patients undergoing cardiac surgery. Platelets 2018; 30:608-614. [PMID: 29985729 DOI: 10.1080/09537104.2018.1492108] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Body mass index (BMI) and specifically overweight and obesity have been associated with an increased platelet reactivity in different series of patients. This information is derived by different laboratory platelet function tests (PFTs) like mean platelet volume (MPV), platelet microparticles, thromboxane B2 metabolites, and others. Point-of-care PFT, which are often used in cardiac surgery, are rarely addressed. The present study aims to verify platelet reactivity using multiple-electrode aggregometry (MEA) as a function of BMI in cardiac surgery patients. One-hundred ninety-eight cardiac surgery patients free from the effects of drugs acting on the P2Y12 receptor and undergoing cardiac surgery received MEA-PFT immediately before surgery. Platelet reactivity was compared between normal weight and overweight-obese subjects. There were 99 underweight/normal (BMI < 25), 60 overweight (BMI ≥ 25) and 39 obese (BMI ≥ 30) patients. Overweight-obese patients did not show higher platelet counts nor a clear platelet hyper-reactivity, when tested with MPV and MEA ADP test. At TRAPtest, the overweight/obese patients had a significantly (P = 0.011) higher platelet reactivity (median 118, interquartile range 106-136) than controls (median 112, interquartile range 101-123) and a higher rate of platelet hyper-reactivity (odds ratio 2.19, 95% confidence interval 1.15-4.16, P = 0.016) in a multivariable model. A minor association was found between the BMI and platelet reactivity at TRAPtest, with a higher degree of activity for increasing BMI. The BMI determines an increased thrombin-dependent platelet reactivity in cardiac surgery patients. Thrombin is extensively formed during cardiac surgery, and this may explain the lower postoperative bleeding observed in obese patients in previous studies.
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Affiliation(s)
- Marco Ranucci
- a Department of Cardiothoracic-Vascular Anesthesia and Intensive Care , IRCCS Policlinico San Donato, Milan, Italy
| | - Tommaso Aloisio
- a Department of Cardiothoracic-Vascular Anesthesia and Intensive Care , IRCCS Policlinico San Donato, Milan, Italy
| | - Umberto Di Dedda
- a Department of Cardiothoracic-Vascular Anesthesia and Intensive Care , IRCCS Policlinico San Donato, Milan, Italy
| | - Maria Teresa La Rovere
- b Department of Cardiology, Fondazione Salvatore Maugeri , IRCCS Istituto Scientifico di Montescano , Montescano , Italy
| | | | - Ekaterina Baryshnikova
- a Department of Cardiothoracic-Vascular Anesthesia and Intensive Care , IRCCS Policlinico San Donato, Milan, Italy
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21
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Schurgers LJ, Akbulut AC, Kaczor DM, Halder M, Koenen RR, Kramann R. Initiation and Propagation of Vascular Calcification Is Regulated by a Concert of Platelet- and Smooth Muscle Cell-Derived Extracellular Vesicles. Front Cardiovasc Med 2018; 5:36. [PMID: 29682509 PMCID: PMC5897433 DOI: 10.3389/fcvm.2018.00036] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 03/26/2018] [Indexed: 12/20/2022] Open
Abstract
The ageing population continues to suffer from its primary killer, cardiovascular disease (CVD). Despite recent advances in interventional medicinal and surgical therapies towards the end of the 20th century, the epidemic of cardiovascular disease has not been halted. Yet, rather than receding globally, the burden of CVD has risen to become a top cause of morbidity and mortality worldwide. Most CVD arises from thrombotic rupture of an atherosclerotic plaque, the pathologic thickening of coronary and carotid artery segments and subsequent distal ischemia in heart or brain. In fact, one-fifth of deaths are directly attributable to thrombotic rupture of a vulnerable plaque. Atherosclerotic lesion formation is caused by a concert of interactions between circulating leukocytes and platelets, interacting with the endothelial barrier, signalling into the arterial wall by the release of cytokines and extracellular vesicles (EVs). Both platelet- and cell-derived EVs represent a novel mechanism of cellular communication, particularly by the transport and transfer of cargo and by reprogramming of the recipient cell. These interactions result in phenotypic switching of vascular smooth muscle cells (VSMCs) causing migration and proliferation, and subsequent secretion of EVs. Loss of VSMCs attracts perivascular Mesenchymal Stem Cells (MSCs) from the adventitia, which are a source of VSMCs and contribute to repair after vascular injury. However, continuous stress stimuli eventually switch phenotype of cells into osteochondrogenic VSMCs facilitating vascular calcification. Although Virchow’s triad is over 100 years old, it is a reality that is accurate today. It can be briefly summarised as changes in the composition of blood (platelet EVs), alterations in the vessel wall (VSMC phenotypic switching, MSC infiltration and EV release) and disruption of blood flow (atherothrombosis). In this paper, we review the latest relevant advances in the identification of extracellular vesicle pathways as well as VSMCs and pericyte/MSC phenotypic switching, underlying vascular calcification.
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Affiliation(s)
- Leon J Schurgers
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht, Netherlands
| | - Asim C Akbulut
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht, Netherlands
| | - Dawid M Kaczor
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht, Netherlands
| | - Maurice Halder
- Division of Nephrology, RWTH Aachen University, Aachen, Germany
| | - Rory R Koenen
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht, Netherlands
| | - Rafael Kramann
- Division of Nephrology, RWTH Aachen University, Aachen, Germany
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22
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Hayward C. Platelet activation in the pathogenesis of obesity and vascular disease. Thromb Haemost 2017; 106:567-8. [DOI: 10.1160/th11-08-0527] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Accepted: 08/19/2011] [Indexed: 11/05/2022]
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23
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Radu CM, Spiezia L, Gavasso S, Fadin M, Woodhams B, Vettor R, Campello E, Zabeo E, Simioni P. Hypercoagulability in overweight and obese subjects who are asymptomatic for thrombotic events. Thromb Haemost 2017; 113:85-96. [DOI: 10.1160/th14-02-0156] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 09/04/2014] [Indexed: 11/05/2022]
Abstract
SummaryThe role of circulating microparticles (MP) of different origin and tissue factor (TF)-bearing in overweight and obese patients with and without metabolic syndrome is still a matter of debate. In a case-control study, the presence of hypercoagulability was evaluated in overweight and obese patients by measuring MP, thrombin generation (TG) and FVIIa-AT complexes. Twenty overweight patients (body mass index [BMI] range 25–29.9 kg/m2), 20 with I degree (30–34.9 kg/m2), 20 with II degree (35–39.9 kg/m2) and 20 with III degree obesity (≥ 40 kg/m2) were enrolled and compared to 40 age and gender-matched normal weight individuals. A significant increase in median levels of all MP subtypes was observed in the three degrees of obese patients compared to controls. Overweight patients had higher levels of annexin V-MP (AMP), endothelial-derived, leukocyte-derived and TF-bearing MP than controls. Obese patients had a significantly shorter median lag time (p< 0.05), higher median peak thrombin (p< 0.01) and increased median endogenous thrombin potential [ETP] (p< 0.001) compared to controls. Overweight subjects had significantly increased ETP compared to controls (p< 0.05). Both AMP levels and ETP were found to positively correlate with BMI, waist circumference, and inflammatory parameters. No significant increase in FVIIa-AT complex was seen in cases compared to controls. We conclude that obesity is associated with overproduction of procoagulant MP and increase TG. Interestingly, hypercoagulability is found in overweight patients free of metabolic syndrome and increases with the severity of obesity. Assessment of MP and TG may be helpful in the early characterisation of the prothrombotic state in obese patients.
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24
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Shantsila E, Montoro-García S, Gallego P, Lip GYH. Circulating microparticles: challenges and perspectives of flow cytometric assessment. Thromb Haemost 2017; 111:1009-14. [DOI: 10.1160/th13-11-0937] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 01/07/2014] [Indexed: 12/18/2022]
Abstract
SummaryCirculating blood microparticles are likely to play a significant role as messengers of biological information. Their accurate quantification and characterisation is challenging and needs to be carefully designed with preferable usage of fresh minimally-processed blood samples. Utilisation of flow cytometers specifically designed for analysis of small-size particles is likely to provide considerable methodological advantages and should be the preferable option. This viewpoint manuscript provides a critical summary of the key methodological aspects of microparticle analysis.Note: The review process for this viewpoint article was fully handled by Christian Weber, Editor in Chief.
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25
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Zaldivia MTK, McFadyen JD, Lim B, Wang X, Peter K. Platelet-Derived Microvesicles in Cardiovascular Diseases. Front Cardiovasc Med 2017; 4:74. [PMID: 29209618 PMCID: PMC5702324 DOI: 10.3389/fcvm.2017.00074] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 11/07/2017] [Indexed: 12/15/2022] Open
Abstract
Microvesicles (MVs) circulating in the blood are small vesicles (100–1,000 nm in diameter) derived from membrane blebs of cells such as activated platelets, endothelial cells, and leukocytes. A growing body of evidence now supports the concept that platelet-derived microvesicles (PMVs), the most abundant MVs in the circulation, are important regulators of hemostasis, inflammation, and angiogenesis. Compared with healthy individuals, a large increase of circulating PMVs has been observed, particularly in patients with cardiovascular diseases. As observed in MVs from other parent cells, PMVs exert their biological effects in multiple ways, such as triggering various intercellular signaling cascades and by participating in transcellular communication by the transfer of their “cargo” of cytoplasmic components and surface receptors to other cell types. This review describes our current understanding of the potential role of PMVs in mediating hemostasis, inflammation, and angiogenesis and their consequences on the pathogenesis of cardiovascular diseases, such as atherosclerosis, myocardial infarction, and venous thrombosis. Furthermore, new developments of the therapeutic potential of PMVs for the treatment of cardiovascular diseases will be discussed.
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Affiliation(s)
- Maria T K Zaldivia
- Atherothrombosis and Vascular Biology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia.,Department of Medicine, Monash University, Melbourne, VIC, Australia
| | - James D McFadyen
- Atherothrombosis and Vascular Biology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia.,Department of Medicine, Monash University, Melbourne, VIC, Australia.,Department of Haematology, The Alfred Hospital, Melbourne, VIC, Australia
| | - Bock Lim
- Atherothrombosis and Vascular Biology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Xiaowei Wang
- Atherothrombosis and Vascular Biology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia.,Department of Medicine, Monash University, Melbourne, VIC, Australia
| | - Karlheinz Peter
- Atherothrombosis and Vascular Biology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia.,Department of Medicine, Monash University, Melbourne, VIC, Australia.,Heart Centre, The Alfred Hospital, Melbourne, VIC, Australia
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26
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Leite NRP, Siqueira de Medeiros M, Mury WV, Matsuura C, Perszel MBM, Noronha Filho G, Brunini TM, Mendes-Ribeiro AC. Platelet hyperaggregability in obesity: is there a role for nitric oxide impairment and oxidative stress? Clin Exp Pharmacol Physiol 2017; 43:738-44. [PMID: 27145241 DOI: 10.1111/1440-1681.12589] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 03/09/2016] [Accepted: 04/29/2016] [Indexed: 12/16/2022]
Abstract
Epidemiological evidence has shown that platelet activation markers are consistently elevated in obesity, contributing to its prothrombotic state. In order to improve the understanding of the regulation of platelet function in obesity, the aim of this study was to investigate the l-arginine-nitric oxide (NO) pathway in obese adults without other cardiovascular risk factor. Seventeen obese (body mass index [BMI] 35.9±1.0 kg/m(2) ) and eighteen age-matched normal weight subjects (BMI 22.0±0.6 kg/m(2) ) were included in this study. l-arginine influx was measured with incubation of l-[(3) H]-arginine. NO synthase (NOS) and arginase activities were determined by the citrulline assay and the conversion of l-[(14) C]-arginine to [(14) C]-urea, respectively. Cyclic guanosine monophosphate (cGMP) content was evaluated by enzyme-linked immunosorbent assay. In addition, the study analyzed: platelet aggregation; intraplatelet antioxidant enzymes, via superoxide dismutase (SOD) and catalase activities; and systemic levels of l-arginine, fibrinogen, and C-reactive protein (CRP). Obese patients presented a significant decrease of platelet l-arginine influx, NOS activity, and cGMP levels, along with platelet hyperaggregability. On the presence of NO donor, platelet aggregation was similar between the groups. The fibrinogen and CRP systemic levels were significantly higher and SOD activity was reduced in obesity. No significant differences were observed in plasma levels of l-arginine and intraplatelet arginase and catalase activities between groups. The diminished NO bioavailability associated with inflammatory status and impaired enzymatic antioxidant defence may contribute to future cardiovascular complications in obesity.
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Affiliation(s)
| | | | - Wanda Vianna Mury
- Department of Pharmacology and Psychobiology, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Cristiane Matsuura
- Department of Pharmacology and Psychobiology, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Monique Bandeira Moss Perszel
- Department of Pharmacology and Psychobiology, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.,Discipline of Pharmacology, Department of Physiological Sciences, Federal University of the State of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Gerson Noronha Filho
- Department of Internal Medicine, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Tatiana Mc Brunini
- Department of Pharmacology and Psychobiology, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Antônio Claúdio Mendes-Ribeiro
- Department of Pharmacology and Psychobiology, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.,Discipline of Pharmacology, Department of Physiological Sciences, Federal University of the State of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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27
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The Interaction of Selectins and PSGL-1 as a Key Component in Thrombus Formation and Cancer Progression. BIOMED RESEARCH INTERNATIONAL 2017; 2017:6138145. [PMID: 28680883 PMCID: PMC5478826 DOI: 10.1155/2017/6138145] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 04/12/2017] [Accepted: 04/23/2017] [Indexed: 12/11/2022]
Abstract
Cellular interaction is inevitable in the pathomechanism of human disease. Formation of heterotypic cellular aggregates, between distinct cells of hematopoietic and nonhematopoietic origin, may be involved in events leading to inflammation and the complex process of cancer progression. Among adhesion receptors, the family of selectins with their ligands have been considered as one of the major contributors to cell-cell interactions. Consequently, the inhibition of the interplay between selectins and their ligands may have potential therapeutic benefits. In this review, we focus on the current evidence on the selectins as crucial modulators of inflammatory, thrombotic, and malignant disorders. Knowing that there is promiscuity in selectin binding, we outline the importance of a key protein that serves as a ligand for all selectins. This dimeric mucin, the P-selectin glycoprotein ligand 1 (PSGL-1), has emerged as a major player in inflammation, thrombus, and cancer development. We discuss the interaction of PSGL-1 with various selectins in physiological and pathological processes with particular emphasis on mechanisms that lead to severe disease.
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28
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Csongrádi É, Káplár M, Nagy B, Koch CA, Juhász A, Bajnok L, Varga Z, Seres I, Karányi Z, Magyar MT, Oláh L, Facskó A, Kappelmayer J, Paragh G. Adipokines as atherothrombotic risk factors in obese subjects: Associations with haemostatic markers and common carotid wall thickness. Nutr Metab Cardiovasc Dis 2017; 27:571-580. [PMID: 28428025 DOI: 10.1016/j.numecd.2017.02.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 02/21/2017] [Accepted: 02/25/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND AIMS Some crucial associations between obesity-related altered adipokine levels and the main factors of atherosclerotic, atherothrombotic processes are not fully known. We analysed the relationships of classic adipokines, namely leptin, resistin, adiponectin, tumour necrosis factor-alpha (TNF-α), interleukin 6 (IL-6) with the markers of platelet activation, including mean platelet volume (MPV), platelet surface/soluble P-selectin, platelet-derived microparticles (PMPs), the parameters of coagulation abnormalities and common carotid intima-media thickness (IMT) in obese patients with or without atherosclerotic comorbidities in comparison to age- and sex-matched controls. METHODS AND RESULTS We enrolled 154 obese individuals, including 98 suffering from atherosclerotic concomitant conditions, 56 free of atherosclerotic comorbidities and 62 healthy controls. Plasma levels of leptin, resistin, adiponectin, TNF-α, IL-6, soluble P-selectin, and plasminogen activator inhibitor-1 antigen (PAI-1 ag) were analysed by ELISA. Platelet surface P-selectin and PMPs were measured by flow cytometry. IMT was detected by ultrasonography. Adipokines were closely associated with markers of platelet hyperactivity, hypercoagulability, hypofibrinolysis and IMT. Significant independent associations were found between leptin and platelet count (p < 0.0001), MPV (p = 0.019), PMPs (p < 0.0001), fibrinogen (p = 0.001), factor VIII (FVIII) activity (p = 0.035); adiponectin and PAI-1 ag (p = 0.035); resistin and soluble P-selectin (p = 0.002); TNF-α and PAI-1 ag (p < 0.0001); and IL-6 and fibrinogen (p = 0.011). Finally, leptin (p = 0.0005), adiponectin (p = 0.019), IL-6 (p = 0.001), MPV (p = 0.0003), PMP (p = 0.008), and FVIII activity (p = 0.043) were independent predictors of IMT. CONCLUSION Overall, we suggest that in obese subjects altered adipokine levels play a key role in common carotid atherosclerosis both directly and through haemostatic parameters.
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Affiliation(s)
- É Csongrádi
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary; Department of Medicine, University of Mississippi Medical Center, Jackson, MS, United States.
| | - M Káplár
- Department of Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - B Nagy
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - C A Koch
- Department of Medicine, University of Mississippi Medical Center, Jackson, MS, United States
| | - A Juhász
- Department of Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - L Bajnok
- 1st Department of Medicine, Faculty of Medicine, University of Pécs, Pécs, Hungary
| | - Z Varga
- Department of Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - I Seres
- Department of Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Z Karányi
- Department of Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - M T Magyar
- Department of Neurology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - L Oláh
- Department of Neurology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - A Facskó
- Department of Ophthalmology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - J Kappelmayer
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - G Paragh
- Department of Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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29
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Ridger VC, Boulanger CM, Angelillo-Scherrer A, Badimon L, Blanc-Brude O, Bochaton-Piallat ML, Boilard E, Buzas EI, Caporali A, Dignat-George F, Evans PC, Lacroix R, Lutgens E, Ketelhuth DFJ, Nieuwland R, Toti F, Tunon J, Weber C, Hoefer IE. Microvesicles in vascular homeostasis and diseases. Position Paper of the European Society of Cardiology (ESC) Working Group on Atherosclerosis and Vascular Biology. Thromb Haemost 2017; 117:1296-1316. [PMID: 28569921 DOI: 10.1160/th16-12-0943] [Citation(s) in RCA: 167] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 04/27/2017] [Indexed: 12/15/2022]
Abstract
Microvesicles are members of the family of extracellular vesicles shed from the plasma membrane of activated or apoptotic cells. Microvesicles were initially characterised by their pro-coagulant activity and described as "microparticles". There is mounting evidence revealing a role for microvesicles in intercellular communication, with particular relevance to hemostasis and vascular biology. Coupled with this, the potential of microvesicles as meaningful biomarkers is under intense investigation. This Position Paper will summarise the current knowledge on the mechanisms of formation and composition of microvesicles of endothelial, platelet, red blood cell and leukocyte origin. This paper will also review and discuss the different methods used for their analysis and quantification, will underline the potential biological roles of these vesicles with respect to vascular homeostasis and thrombosis and define important themes for future research.
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Affiliation(s)
| | - Chantal M Boulanger
- Victoria Ridger, PhD, Department of Infection, Immunity and Cardiovascular Disease, Faculty of Medicine, Dentistry and Health, University of Sheffield, Sheffield, UK, E-mail: , or, Chantal M. Boulanger, PhD, INSERM UMR-S 970, Paris Cardiovascular Research Center - PARCC, 56 rue Leblanc, 75015 Paris, France, E-mail:
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30
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Ne JYA, Cai TY, Celermajer DS, Caterson ID, Gill T, Lee CMY, Skilton MR. Obesity, arterial function and arterial structure - a systematic review and meta-analysis. Obes Sci Pract 2017; 3:171-184. [PMID: 28702212 PMCID: PMC5478805 DOI: 10.1002/osp4.108] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 03/23/2017] [Accepted: 03/26/2017] [Indexed: 12/28/2022] Open
Abstract
OBJECTIVE Obesity is an established risk factor for cardiovascular disease. The mechanisms by which obesity affects cardiovascular risk have not been fully elucidated. This paper reports a comprehensive systematic review and meta-analysis on obesity and two key aspects of vascular health using gold-standard non-invasive measures - arterial endothelial function (brachial flow-mediated dilatation) and subclinical atherosclerosis (carotid intima-media thickness). METHODS Electronic searches for 'Obesity and flow-mediated dilatation' and 'Obesity and intima-media thickness' were performed using Ovid Medline and Embase databases. A meta-analysis was undertaken for brachial flow-mediated dilatation and carotid intima-media thickness to obtain pooled estimates for adults with obesity and those with healthy weight. RESULTS Of the 5,810 articles retrieved, 19 studies on flow-mediated dilatation and 19 studies on intima-media thickness were included. Meta-analysis demonstrated that obesity was associated with lower flow-mediated dilatation (-1.92 % [95% CI -2.92, -0.92], P = 0.0002) and greater carotid intima-media thickness (0.07 mm [95% CI 0.05, 0.08], P < 0.0001). CONCLUSIONS Obesity is associated with poorer arterial endothelial function and increased subclinical atherosclerosis, consistent with these aspects of vascular health at least partially contributing to the increased risk of cardiovascular events in adults with obesity. These estimated effect sizes will enable vascular health benefits in response to weight loss treatment to be put in greater perspective, both in the research setting and potentially also clinical practice.
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Affiliation(s)
- J Y A Ne
- Boden Institute of Obesity, Nutrition, Exercise and Eating Disorders University of Sydney Australia.,Sydney Medical School University of Sydney Australia.,National University Health System Singapore
| | - T Y Cai
- Boden Institute of Obesity, Nutrition, Exercise and Eating Disorders University of Sydney Australia.,Sydney Medical School University of Sydney Australia
| | | | - I D Caterson
- Boden Institute of Obesity, Nutrition, Exercise and Eating Disorders University of Sydney Australia
| | - T Gill
- Boden Institute of Obesity, Nutrition, Exercise and Eating Disorders University of Sydney Australia
| | - C M Y Lee
- Boden Institute of Obesity, Nutrition, Exercise and Eating Disorders University of Sydney Australia
| | - M R Skilton
- Boden Institute of Obesity, Nutrition, Exercise and Eating Disorders University of Sydney Australia
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31
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Fejes Z, Póliska S, Czimmerer Z, Káplár M, Penyige A, Gál Szabó G, Beke Debreceni I, Kunapuli SP, Kappelmayer J, Nagy B. Hyperglycaemia suppresses microRNA expression in platelets to increase P2RY12 and SELP levels in type 2 diabetes mellitus. Thromb Haemost 2016; 117:529-542. [PMID: 27975100 DOI: 10.1160/th16-04-0322] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 11/26/2016] [Indexed: 12/19/2022]
Abstract
Megakaryocyte (MK)-derived miRNAs have been detected in platelets. Here, we analysed the expression of platelet and circulating miR-223, miR-26b, miR-126 and miR-140 that might be altered with their target mRNAs in type 2 diabetes mellitus (DM2). MiRNAs were isolated from leukocyte-depleted platelets and plasma samples obtained from 28 obese DM2, 19 non-DM obese and 23 healthy individuals. The effect of hyperglycaemia on miRNAs was also evaluated in MKs using MEG-01 and K562 cells under hyperglycaemic conditions after 8 hours up to four weeks. Quantitation of mature miRNA, pre-miRNAs and target mRNA levels (P2RY12 and SELP) were measured by RT-qPCR. To prove the association of miR-26b and miR-140 with SELP (P-selectin) mRNA level, overexpression or inhibition of these miRNAs in MEG-01 MKs was performed using mimics or anti-miRNAs, respectively. The contribution of calpain substrate Dicer to modulation of miRNAs was studied by calpain inhibition. Platelet activation was evaluated via surface P-selectin by flow cytometry. Mature and pre-forms of investigated miRNAs were significantly reduced in DM2, and platelet P2RY12 and SELP mRNA levels were elevated by two-fold at increased platelet activation compared to controls. Significantly blunted miRNA expressions were observed by hyperglycaemia in MEG-01 and K562-MK cells versus baseline values, while the manipulation of miR-26b and miR-140 expression affected SELP mRNA level. Calpeptin pretreatment restored miRNA levels in hyperglycaemic MKs. Overall, miR-223, miR-26b, miR-126 and miR-140 are expressed at a lower level in platelets and MKs in DM2 causing upregulation of P2RY12 and SELP mRNAs that may contribute to adverse platelet function.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Béla Nagy
- Béla Nagy Jr, MD, PhD, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98. H-4032, Debrecen, Hungary, Tel.: +36 52 340 006, Fax: +36 52 417 631, E-mail:
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Becs G, Hudák R, Fejes Z, Debreceni IB, Bhattoa HP, Balla J, Kappelmayer J. Haemodiafiltration elicits less platelet activation compared to haemodialysis. BMC Nephrol 2016; 17:147. [PMID: 27737645 PMCID: PMC5064778 DOI: 10.1186/s12882-016-0364-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 10/11/2016] [Indexed: 11/20/2022] Open
Abstract
Background Mortality in patients with end-stage renal disorders is often a consequence of cardiovascular complications. Renal replacement therapies may contribute to this morbidity by promoting cellular activation. In renal failure patients peripheral blood samples were investigated for platelet and endothelial cell activation markers to compare the effects of haemodiafiltration (HDF) and haemodialysis (HD). Methods Overall 28 patients were included in the study. Platelet P-selectin and leukocyte - platelet heterotypic aggregates were studied by flow cytometry. Soluble P- and E-selectin values were determined by ELISA, while von Willebrand factor (vWF) antigen levels were measured by immunoturbidimetry. Statistical analysis was done by the SPSS v22 software. Results Platelet surface P-selectin was below 3.0 % in healthy controls, but it was higher during the dialysis after 4 h, 8 % and 14.3 % in HDF and HD, respectively. Monocyte-platelet heterotypic aggregates were significantly elevated after 4 h in both treatments, up to 69.2 % in HDF and to 82.9 % in HD. Soluble P-selectin levels were also significantly elevated by the end of both treatment procedures (p < 0.001), vWF antigen values, however, showed elevation only during HD treatment. Conclusions The attenuated platelet activating effects of HDF compared to HD may contribute to a less unfavourable vascular effect in this treatment modality. Electronic supplementary material The online version of this article (doi:10.1186/s12882-016-0364-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Gergely Becs
- Department of Nephrology, University of Debrecen, Debrecen, Hungary
| | - Renáta Hudák
- Department of Laboratory Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, Hungary
| | - Zsolt Fejes
- Department of Laboratory Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, Hungary
| | - Ildikó Beke Debreceni
- Department of Laboratory Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, Hungary
| | - Harjit Pal Bhattoa
- Department of Laboratory Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, Hungary
| | - József Balla
- Department of Nephrology, University of Debrecen, Debrecen, Hungary.,MTA-DE Vascular Biology, Thrombosis and Hemostasis Research Group, Hungarian Academy of Sciences, Debrecen, Hungary
| | - János Kappelmayer
- Department of Laboratory Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, Hungary.
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Badimon L, Suades R, Fuentes E, Palomo I, Padró T. Role of Platelet-Derived Microvesicles As Crosstalk Mediators in Atherothrombosis and Future Pharmacology Targets: A Link between Inflammation, Atherosclerosis, and Thrombosis. Front Pharmacol 2016; 7:293. [PMID: 27630570 PMCID: PMC5005978 DOI: 10.3389/fphar.2016.00293] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 08/22/2016] [Indexed: 12/24/2022] Open
Abstract
Reports in the last decade have suggested that the role of platelets in atherosclerosis and its thrombotic complications may be mediated, in part, by local secretion of platelet-derived microvesicles (pMVs), small cell blebs released during the platelet activation process. MVs are the most abundant cell-derived microvesicle subtype in the circulation. High concentrations of circulating MVs have been reported in patients with atherosclerosis, acute vascular syndromes, and/or diabetes mellitus, suggesting a potential correlation between the quantity of microvesicles and the clinical severity of the atherosclerotic disease. pMVs are considered to be biomarkers of disease but new information indicates that pMVs are also involved in signaling functions. pMVs evoke or promote haemostatic and inflammatory responses, neovascularization, cell survival, and apoptosis, processes involved in the pathophysiology of cardiovascular disease. This review is focused on the complex cross-talk between platelet-derived microvesicles, inflammatory cells and vascular elements and their relevance in the development of the atherosclerotic disease and its clinical outcomes, providing an updated state-of-the art of pMV involvement in atherothrombosis and pMV potential use as therapeutic agent influencing cardiovascular biomedicine in the future.
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Affiliation(s)
- Lina Badimon
- Cardiovascular Research Center, Consejo Superior de Investigaciones Científicas - Institut Català de Ciències Cardiovasculars, Institut d'Investigació Biomèdica Sant Pau, Hospital Santa Creu i Sant PauBarcelona, Spain; Cardiovascular Research Chair, Universitat Autònoma de BarcelonaBarcelona, Spain
| | - Rosa Suades
- Cardiovascular Research Center, Consejo Superior de Investigaciones Científicas - Institut Català de Ciències Cardiovasculars, Institut d'Investigació Biomèdica Sant Pau, Hospital Santa Creu i Sant Pau Barcelona, Spain
| | - Eduardo Fuentes
- Department of Clinical Biochemistry and Immunohematology, Faculty of Health Sciences, Interdisciplinary Excellence Research Program on Healthy Aging, Universidad de TalcaTalca, Chile; Centro de Estudios en Alimentos Procesados, Conicyt-RegionalGore-Maule, Talca, Chile
| | - Iván Palomo
- Department of Clinical Biochemistry and Immunohematology, Faculty of Health Sciences, Interdisciplinary Excellence Research Program on Healthy Aging, Universidad de TalcaTalca, Chile; Centro de Estudios en Alimentos Procesados, Conicyt-RegionalGore-Maule, Talca, Chile
| | - Teresa Padró
- Cardiovascular Research Center, Consejo Superior de Investigaciones Científicas - Institut Català de Ciències Cardiovasculars, Institut d'Investigació Biomèdica Sant Pau, Hospital Santa Creu i Sant Pau Barcelona, Spain
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Koklu E, Yuksel IO, Arslan S, Cagirci G, Gencer ES, Koc P, Cay S, Kizilirmak F, Esin M. Predictors of Symptom Development in Intermediate Carotid Artery Stenosis: Mean Platelet Volume and Platelet Distribution Width. Angiology 2015; 67:622-9. [PMID: 26514416 DOI: 10.1177/0003319715613916] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Platelets play an important role in the pathogenesis of atherothrombosis. Platelet activation is associated with increased mean platelet volume (MPV) and platelet distribution width (PDW). In this study, we investigated the relation of MPV and PDW with the risk of stroke in patients with intermediate (50%-70%) carotid artery stenosis. A total of 254 patients (115 symptomatic and 139 asymptomatic) with intermediate carotid artery stenosis were enrolled in this study. Symptomatic and asymptomatic patients were compared in regard to MPV and PDW. Mean platelet volume was significantly greater in the symptomatic group compared with the asymptomatic group (11.1 and 9.4 fL, respectively; P < .001). Platelet distribution width was significantly greater in the symptomatic group compared with the asymptomatic group (15.0% and 11.9%, respectively; P < .001). Multivariate regression analysis showed that an MPV ≥10.2 fL and a PDW ≥14.3% were independent predictors of developing symptomatic carotid artery stenosis. Mean platelet volume and PDW are increased in the presence of symptomatic intermediate carotid artery stenosis. Increased MPV and PDW may be independent predictors of developing symptomatic carotid artery plaque.
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Affiliation(s)
- Erkan Koklu
- Cardiology Clinic, Antalya Training and Research Hospital, Antalya, Turkey
| | - Isa Oner Yuksel
- Cardiology Clinic, Antalya Training and Research Hospital, Antalya, Turkey
| | - Sakir Arslan
- Cardiology Clinic, Antalya Training and Research Hospital, Antalya, Turkey
| | - Goksel Cagirci
- Cardiology Clinic, Antalya Training and Research Hospital, Antalya, Turkey
| | | | - Pinar Koc
- Radiology Clinic, Antalya Training and Research Hospital, Antalya, Turkey
| | - Serkan Cay
- Cardiology Clinic, Turkiye Yuksek Ihtisas Training and Research Hospital, Ankara, Turkey
| | - Filiz Kizilirmak
- Department of Cardiology, Medipol University Faculty of Medicine, Istanbul, Turkey
| | - Murat Esin
- Cardiology Clinic, Antalya Training and Research Hospital, Antalya, Turkey
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Alterations in adhesion molecules, pro-inflammatory cytokines and cell-derived microparticles contribute to intima-media thickness and symptoms in postmenopausal women. PLoS One 2015; 10:e0120990. [PMID: 25993480 PMCID: PMC4438064 DOI: 10.1371/journal.pone.0120990] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 02/09/2015] [Indexed: 12/14/2022] Open
Abstract
Menopause, the cessation of menses, occurs with estrogens decline, low-grade inflammation, and impaired endothelial function, contributing to atherosclerotic risk. Intima-media thickness (IMT) is an early subclinical biomarker of atherosclerosis. Inflammation may have a role on symptoms: hot flashes, anxiety, and depressive mood, which also are related to endothelial dysfunction, increased IMT and cardiovascular risk. In this study we compared several inflammatory markers in early vs. late postmenopausal women and studied the association of IMT and symptoms with these markers in the full sample. In a cross-sectional design including 60 women (53.1 ± 4.4 years old) at early and late postmenopause, we evaluated the expression of CD62L, ICAM-1, PSGL-1, CD11b, CD11c, and IL-8R on PBMC by flow cytometry. Serum soluble ICAM-1, sVCAM-1, sCD62E, sCD62P, CXCL8, IL-1β, IL-6, and TNF-α levels were quantified by ELISA. Plasma levels of microparticles (MPs) were determined by FACS. Finally, carotid intima-media thickness (IMT) was measured by ultrasound. We observed that ICAM-1 expression by lymphocytes and serum sVCAM-1 levels were augmented at late postmenopause. Late postmenopause women with severe hot flashes had increased expression of CD62L and IL-8R on neutrophils. By multivariate analysis, the carotid IMT was strongly associated with membrane-bound TNF-α, CD11b expression, Annexin V(+) CD3(+) MPs, LPS-induced NO production, HDL-cholesterol and age. Depressive mood was associated negatively with PSGL-1 and positively with LPS-induced NO. Finally, Log(AMH) levels were associated with carotid IMT, IL-8R expression and time since menopause. IMT and depressive mood were the main clinical features related to vascular inflammation. Aging, hormonal changes and obesity were also related to endothelial dysfunction. These findings provide further evidence for a link between estrogen deficiency and low-grade inflammation in endothelial impairment in mature women.
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Microvesicles and diabetic complications--novel mediators, potential biomarkers and therapeutic targets. Acta Pharmacol Sin 2014; 35:433-43. [PMID: 24608676 DOI: 10.1038/aps.2013.188] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 12/12/2013] [Indexed: 12/13/2022] Open
Abstract
Microvesicles (MVs), also known as microparticles, are small membrane vesicles released from different cell types under different conditions. MVs have been detected in the circulation and in organs/tissues in various diseases, including diabetes. Patients with different types of diabetes and complications have different cellular MV patterns. Studies have shown that MVs may mediate vascular thrombosis, vascular inflammation, angiogenesis, and other pathological processes of the disease through their procoagulant, pro-inflammatory, pro-angiogenic, proteolytic, and other properties. Therefore, MVs contribute to the development of diabetic macrovascular and microvascular complications. In addition, clinical studies have indicated that changes in MV number and composition may reflect the pathophysiological conditions of disease, and therefore, may serve as potential biomarkers for diagnostic and prognostic use. Understanding MVs' involvement in the pathophysiological conditions may provide insight into disease mechanisms and would also be helpful for the development of novel therapeutic strategies in the future. Here, we review the latest publications from our group and other groups and focus on the involvement of MVs in diabetic complications.
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Mayer FJ, Hoke M, Schillinger M, Minar E, Arbesú I, Koppensteiner R, Mannhalter C. Mean platelet volume predicts outcome in patients with asymptomatic carotid artery disease. Eur J Clin Invest 2014; 44:22-8. [PMID: 24117332 PMCID: PMC6340475 DOI: 10.1111/eci.12184] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Accepted: 09/23/2013] [Indexed: 01/18/2023]
Abstract
BACKGROUND AND OBJECTIVE Platelets play a pivotal role in atherothrombosis and are potentially involved in the pathogenesis of atherosclerosis. We investigated whether mean platelet volume (MPV) predicts clinical outcome and progression of atherosclerosis in patients with asymptomatic carotid artery disease. METHODS We studied 1006 of 1268 prospectively collected consecutive patients with asymptomatic carotid atherosclerosis who were evaluated by duplex sonography. Patients were followed up clinically for the occurrence of a major adverse cardiovascular event (MACE), a composite of myocardial infarction, percutaneous coronary intervention, coronary artery bypass graft, stroke and death. RESULTS During a median follow-up of 3.1 years (interquartile range, 2.5-3.5), a total of 316 (31.5%) MACEs were recorded. Increased levels of MPV were significantly associated with increased risk of the occurrence of MACEs (adjusted hazard ratio [HR] for an increase in one standard deviation [SD] of MPV 1.22, confidence interval [CI] 1.05-1.35, P < 0.01). Patients with MPV levels above 11.8 femtolitre (= fifth quintile) had a significantly higher event rate (41.3% vs. 29.3%, P < 0.001) with an adjusted HR for MACEs of 1.65 (95% CI 1.26-2.16, P < 0.001) compared with patients with MPV levels in the first to fourth quintile. No significant association was found between baseline MPV levels with either baseline degree or progression during a 6-month follow-up of carotid stenosis. CONCLUSION Mean platelet volume was independently and significantly associated with adverse cardiovascular outcome in patients with asymptomatic carotid atherosclerosis.
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Affiliation(s)
- Florian J Mayer
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
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Dalmas E, Kahn JF, Giral P, Abdennour M, Bouillot JL, Fellahi S, Oppert JM, Clément K, Guerre-Millo M, Poitou C. Intima-media thickness in severe obesity: links with BMI and metabolic status but not with systemic or adipose tissue inflammation. Diabetes Care 2013; 36:3793-802. [PMID: 24062328 PMCID: PMC3816856 DOI: 10.2337/dc13-0256] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Obesity is associated with cardiovascular risk and a low-grade inflammatory state in both blood and adipose tissue (AT). Whether inflammation contributes to vascular alteration remains an open question. To test this hypothesis, we measured arterial intima-media thickness (IMT), which reflects subclinical atherosclerosis, in severely obese subjects and explored associations with systemic inflammation and AT inflammation. RESEARCH DESIGN AND METHODS IMT of the carotid artery (C-IMT) and IMT of the femoral artery (F-IMT) were measured in 132 nonobese (control) subjects (BMI 22.3 kg/m2; mean age 44.8 years) and 232 subjects who were severely obese without diabetes (OB/ND; n = 146; BMI 48.3 kg/m2; age 38.2 years) or severely obese with type 2 diabetes (OB/D; n = 86; BMI 47.0; age 49.4 years). In 57 OB/ND subjects, circulating soluble E-selectin, matrix metalloproteinase 9, myeloperoxidase, soluble intracellular adhesion molecule 1, soluble vascular cell adhesion molecule 1, tissue plasminogen activator inhibitor 1, cystatin C, cathepsin S, and soluble CD14 were measured in serum. AT macrophages were quantified by CD68 immunochemistry. RESULTS Both C-IMT and F-IMT increased in OB/ND and OB/D patients. In OB/ND patients, age was the sole independent determinant of IMT. No significant association was found with circulating inflammation-related molecules, number of CD68+ cells, or the presence of crown-like structures in visceral or subcutaneous AT of OB/ND patients. CONCLUSIONS IMT increased with severe obesity but was not influenced by the degree of systemic inflammation or AT macrophage accumulation.
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Majumdar S, Webb S, Norcross E, Mannam V, Ahmad N, Lirette S, Iyer R. Stroke with intracranial stenosis is associated with increased platelet activation in sickle cell anemia. Pediatr Blood Cancer 2013; 60:1192-7. [PMID: 23509099 DOI: 10.1002/pbc.24473] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Accepted: 12/17/2012] [Indexed: 12/21/2022]
Abstract
BACKGROUND Overt stroke in sickle cell anemia (SCA) is associated with intracranial stenosis and thrombus formation. Platelet activation is critical for thrombus formation. PROCEDURE Platelet activation studies were performed in 50 subjects: 18 SCA patients with history of stroke or abnormal transcranial Doppler (TCD) and intracranial stenosis seen by magnetic resonance angiogram (MRA), 7 SCA patients with history of stroke or abnormal TCD but no intracranial stenosis, 13 SCA patients with no history of stroke or abnormal TCD, and 12 healthy African-Americans. RESULTS Of the 18 patients with intracranial stenosis, 11 (61%) had evidence of the moyo-moya phenomenon on MRA. SCA children with intracranial stenosis had a significantly greater total white cell count compared to both healthy African-American controls and SCA patients in the steady-state (P < 0.001). In addition, SCA patients with history of stroke or abnormal TCD had a significantly higher platelet count compared to healthy African-American controls (P < 0.002). The percentage of platelet surface P-selectin expression was significantly greater in patients with intracranial stenosis compared to the other groups (P < 0.05), particularly in individuals that did not have the moya-moya phenomenon seen on MRA. CONCLUSION Stroke with intracranial stenosis is associated with increased platelet activation in sickle cell anemia, and further investigation is needed on the role of anti-platelet agents in this high-risk population.
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Affiliation(s)
- Suvankar Majumdar
- Department of Pediatrics, University of Mississippi Medical Center, Jackson, Mississippi 39216, USA.
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Cooper JN, Evans RW, Mori Brooks M, Fried L, Holmes C, Barinas-Mitchell E, Sutton-Tyrrell K. Associations between arterial stiffness and platelet activation in normotensive overweight and obese young adults. Clin Exp Hypertens 2013; 36:115-22. [PMID: 23654212 DOI: 10.3109/10641963.2013.789045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Obese individuals have elevated platelet activation and arterial stiffness, but the strength and temporality of the relationship between these factors remain unclear. We aimed to determine the effect of increased arterial stiffness on circulating platelet activity in overweight/obese young adults. This analysis included 92 participants (mean age 40 years, 60 women) in the Slow Adverse Vascular Effects of excess weight (SAVE) trial, a clinical trial examining the effects of a lifestyle intervention with or without sodium restriction on vascular health in normotensive overweight/obese young adults. Carotid-femoral (cf), brachial-ankle (ba) and femoral-ankle (fa) pulse wave velocity (PWV) served as measures of arterial stiffness and were measured at baseline and 6, 12 and 24 months follow-up. Platelet activity was measured as plasma β-thromboglobulin (β-TG) at 24 months. Higher plasma β-TG was correlated with greater exposure to elevated cfPWV (p = 0.02) and baPWV (p = 0.04) during the preceding two years. After adjustment for serum leptin, greater exposure to elevated baPWV remained significant (p = 0.03) and exposure to elevated cfPWV marginally significant (p = 0.054) in predicting greater plasma β-TG. Greater arterial stiffness, particularly central arterial stiffness, predicts greater platelet activation in overweight/obese individuals. This relationship might partly explain the association between increased arterial stiffness and incident atherothrombotic events.
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Abstract
Hemostasis encompasses the tightly regulated processes of blood clotting, platelet activation, and vascular repair. After wounding, the hemostatic system engages a plethora of vascular and extravascular receptors that act in concert with blood components to seal off the damage inflicted to the vasculature and the surrounding tissue. The first important component that contributes to hemostasis is the coagulation system, while the second important component starts with platelet activation, which not only contributes to the hemostatic plug, but also accelerates the coagulation system. Eventually, coagulation and platelet activation are switched off by blood-borne inhibitors and proteolytic feedback loops. This review summarizes new concepts of activation of proteases that regulate coagulation and anticoagulation, to give rise to transient thrombin generation and fibrin clot formation. It further speculates on the (patho)physiological roles of intra- and extravascular receptors that operate in response to these proteases. Furthermore, this review provides a new framework for understanding how signaling and adhesive interactions between endothelial cells, leukocytes, and platelets can regulate thrombus formation and modulate the coagulation process. Now that the key molecular players of coagulation and platelet activation have become clear, and their complex interactions with the vessel wall have been mapped out, we can also better speculate on the causes of thrombosis-related angiopathies.
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Affiliation(s)
- Henri H. Versteeg
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands; Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands; and Department of Medicine, Academic Medical Center, Amsterdam, The Netherlands
| | - Johan W. M. Heemskerk
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands; Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands; and Department of Medicine, Academic Medical Center, Amsterdam, The Netherlands
| | - Marcel Levi
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands; Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands; and Department of Medicine, Academic Medical Center, Amsterdam, The Netherlands
| | - Pieter H. Reitsma
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands; Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands; and Department of Medicine, Academic Medical Center, Amsterdam, The Netherlands
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Artoni A, Merati G, Padovan L, Scalambrino E, Chantarangkul V, Tripodi A. Residual platelets are the main determinants of microparticles count in frozen-thawed plasma. Thromb Res 2012; 130:561-2. [DOI: 10.1016/j.thromres.2012.04.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 03/30/2012] [Accepted: 04/12/2012] [Indexed: 10/28/2022]
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Klempfner R, Leor J, Tenenbaum A, Fisman EZ, Goldenberg I. Effects of a vildagliptin/metformin combination on markers of atherosclerosis, thrombosis, and inflammation in diabetic patients with coronary artery disease. Cardiovasc Diabetol 2012; 11:60. [PMID: 22672501 PMCID: PMC3403890 DOI: 10.1186/1475-2840-11-60] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Accepted: 06/06/2012] [Indexed: 11/10/2022] Open
Abstract
Background Diabetic patients present with an accelerated atherosclerotic process and an increased risk for future cardiovascular events. In addition to the risk imposed by the disease itself, pharmacological treatment adds also a sizable risk, especially if certain classes of antidiabetic drugs are employed. Animal evidence indicates that dipeptidyl peptidase-4 inhibitors have anti-atherosclerotic effects, yet clinical data are scarcely available. Design We plan to prospectively investigate the effects of dipeptidyl peptidase-4 inhibition with vildagliptin on a number of atherothrombotic markers and adipokines in patients with proven atherosclerosis and type 2 diabetes. The selected markers are: interleukin-6, high sensitivity C reactive protein, interleukin 1-beta, total adiponectin levels, matrix metallo-proteinase 9 and platelet reactivity testing. Sixty eligible patients will be randomized in a 2:1 ratio to vildagliptin/metformin or metformin only treatment, for a 3-month duration treatment. Blood sampling for the proposed investigations will be taken at enrollment and immediately after completion of the study period. Discussion Demonstrating antiatherothrombotic properties of dipeptidyl peptidase-4 inhibitors on proven markers is of substantial clinical significance. Coupled with their proven good safety profile these findings could translate into a significant clinical benefit.
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Affiliation(s)
- Robert Klempfner
- Cardiac Rehabilitation Institute, Leviev Heart Center, Sheba Medical Center, 52621, Tel Hashomer, Israel.
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Kochunov P, Glahn DC, Hong LE, Lancaster J, Curran JE, Johnson MP, Winkler AM, Holcomb HH, Kent JW, Mitchell B, Kochunov V, Olvera RL, Cole SA, Dyer TD, Moses EK, Goring H, Almasy L, Duggirala R, Blangero J. P-selectin Expression Tracks Cerebral Atrophy in Mexican-Americans. Front Genet 2012; 3:65. [PMID: 22558002 PMCID: PMC3340599 DOI: 10.3389/fgene.2012.00065] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Accepted: 04/05/2012] [Indexed: 11/13/2022] Open
Abstract
Background and Purpose: We hypothesized that the P-selectin (SELP) gene, localized to a region on chromosome 1q24, pleiotropically contributes to increased blood pressure and cerebral atrophy. We tested this hypothesis by performing genetic correlation analyses for 13 mRNA gene expression measures from P-selectin and 11 other genes located in 1q24 region and three magnetic resonance imaging derived indices of cerebral integrity. Methods: The subject pool consisted of 369 (219F; aged 28–85, average = 47.1 ± 12.7 years) normally aging, community-dwelling members of large extended Mexican-American families. Genetic correlation analysis decomposed phenotypic correlation coefficients into genetic and environmental components among 13 leukocyte-based mRNA gene expressions and three whole-brain and regional measurements of cerebral integrity: cortical gray matter thickness, fractional anisotropy of cerebral white matter, and the volume of hyperintensive WM lesions. Results: From the 13 gene expressions, significant phenotypic correlations were only found for the P- and L-selectin expression levels. Increases in P-selectin expression levels tracked with decline in cerebral integrity while the opposite trend was observed for L-selectin expression. The correlations for the P-selectin expression were driven by shared genetic factors, while the correlations with L-selectin expression were due to shared environmental effects. Conclusion: This study demonstrated that P-selectin expression shared a significant variance with measurements of cerebral integrity and posits elevated P-selectin expression levels as a potential risk factor of hypertension-related cerebral atrophy.
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Affiliation(s)
- P Kochunov
- Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland School of Medicine Baltimore, MD, USA
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Lukasik M, Rozalski M, Luzak B, Michalak M, Ambrosius W, Watala C, Kozubski W. Enhanced platelet-derived microparticle formation is associated with carotid atherosclerosis in convalescent stroke patients. Platelets 2012; 24:63-70. [PMID: 22372532 DOI: 10.3109/09537104.2011.654292] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Platelets participate in the development and progression of atherosclerosis. During this process they interact with endothelial cells and leukocytes. Therefore, we investigated the associations between carotid atherosclerosis and platelet reactivity markers. The platelet surface expression of P-selectin (CD62P) and the activated GPIIb/IIIa receptor (corresponding to increased binding of PAC-1), as well as the fraction of platelet-derived microparticles (PMPs) prior to and after platelet stimulation with TRAP or ADP, were determined using flow cytometry in 94 subjects in the convalescent phase of ischaemic stroke and in 76 disease controls. The mean common carotid intima-media thickness (CCA(mean) IMT), maximal common carotid IMT (CCA(max) IMT) and maximal bifurcation IMT (BIF(max) IMT) were measured bilaterally using B mode, colour Doppler ultrasonography. In stroke subjects IMT within CCA and BIF were greater than in disease controls and the percentage of PMPs prior to and after ex vivo stimulation with agonists was significantly higher than in controls. Multiple regression analysis revealed that PMPs were positively and independently correlated with both CCA(mean) IMT (β = 0.23; p < 0.01) and stroke (β = 0.21; p<0.01), while PAC-1 binding to platelets activated with ADP was negatively and independently associated with CCA(mean) IMT (β = -0.29; p<0.001) and atherosclerotic carotid plaque presence (β = -0.28, p = 0.003). We found a positive association between enhanced PMP formation and atherosclerotic thickening of carotid intima-media or carotid plaque in patients after ischaemic stroke. We demonstrated that diminished expression of active GPIIb/IIIa in the ADP-activated platelets is associated with increased carotid IMT, independently of stroke.
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Affiliation(s)
- Maria Lukasik
- Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland.
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Van Laecke S, Nagler EVT, Vanholder R. Thrombotic microangiopathy: a role for magnesium? Thromb Haemost 2012; 107:399-408. [PMID: 22274299 DOI: 10.1160/th11-08-0593] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2011] [Accepted: 12/01/2011] [Indexed: 12/15/2022]
Abstract
Despite advances in more recent years, the pathophysiology and especially treatment modalities of thrombotic microangiopathy (TMA) largely remain enigmatic. Disruption of endothelial homeostasis plays an essential role in TMA. Considering the proven causal association between magnesium and both endothelial function and platelet aggregability, we speculate that a magnesium deficit could influence the course of TMA and the related haemolytic uraemic syndrome and thrombotic thrombocytopenic purpura. A predisposition towards TMA is seen in many conditions with both extracellular and intracellular magnesium deficiency. We propose a rationale for magnesium supplementation in TMA, in analogy with its evidence-based therapeutic application in pre-eclampsia and suggest, based on theoretical grounds, that it might attenuate the development of TMA, minimise its severity and prevent its recurrence. This is based on several lines of evidence from both in vitro and in vivo data showing dose-dependent effects of magnesium supplementation on nitric oxide production, platelet aggregability and inflammation. Our hypothesis, which is further amenable to assessment in animal models before therapeutic applications in humans are implemented, could be explored both in vitro and in vivo to decipher the potential role of magnesium deficit in TMA and of the effects of its supplementation.
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Affiliation(s)
- Steven Van Laecke
- Department of Nephrology, Ghent University Hospital, Ghent, Belgium.
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