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Platelet microparticles

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https://www.readbyqxmd.com/read/29330877/characterization-of-biologic-response-modifiers-in-the-supernatant-of-conventional-refrigerated-and-cryopreserved-platelets
#1
Lacey Johnson, Shereen Tan, Emily Jenkins, Ben Wood, Denese C Marks
BACKGROUND: Alternatives to room temperature storage of platelets (PLTs) are of interest to support blood banking logistics. The aim of this study was to compare the presence of biologic response modifiers (BRMs) in PLT concentrates stored under conventional room temperature conditions with refrigerated or cryopreserved PLTs. STUDY DESIGN AND METHODS: A three-arm pool-and-split study was carried out using buffy coat-derived PLTs stored in 30% plasma/70% SSP+. The three matched treatment arms were as follows: room temperature (20-24°C), cold (2-6°C), and cryopreserved (-80°C with DMSO)...
January 12, 2018: Transfusion
https://www.readbyqxmd.com/read/29329679/standardization-of-a-fast-and-effective-method-for-the-generation-and-detection-of-platelet-derived-microparticles-by-a-flow-cytometer
#2
Daniela Recabarren-Leiva, Marcelo Alarcón
The Flow Cytometry is the principal method used to measure platelet-derived microparticles (PDMPs), by fluorescent properties analysis. PDMPs (0.1-1.0 microns) are abundant in circulation, accounting for approximately 90% of the microparticles and are associated with Cardiovascular Disease, the leading cause of death in the world.
January 9, 2018: Immunology Letters
https://www.readbyqxmd.com/read/29305843/circulating-microparticles-levels-are-increased-in-patients-with-diabetic-kidney-disease-a-case-control-research
#3
Kathryna Fontana Rodrigues, Nathalia Teixeira Pietrani, Ana Paula Fernandes, Adriana Aparecida Bosco, Maira Cândida Rodrigues de Sousa, Ieda de Fátima Oliveira Silva, Josianne Nicácio Silveira, Fernanda Magalhães Freire Campos, Karina Braga Gomes
BACKGROUND: Type 2 diabetes mellitus (T2DM) is associated with chronic lowgrade inflammation. Microparticles (MPs) are extracellular microvesicles released during apoptosis and cellular activation. The MP's pro-coagulant and pro-inflammatory activities are involved in endothelial dysfunction observed in T2DM patients. This study aimed to evaluate the circulating MPs profile in T2DM patients with diabetic kidney disease (DKD) and correlate it with clinical and laboratorial parameters. METHODS: MPs derived from platelets (PMPs), leukocytes (LMPs), endothelial cells (EMPs), and expressing tissue factor (TFMPs) were measured by flow cytometry, in plasma of 39 DKD patients and 30 non-diabetic controls...
January 3, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29246924/the-prothrombotic-state-in-paroxysmal-nocturnal-haemoglobinuria-a-multifaceted-source
#4
Barnaby Peacock-Young, Fraser L Macrae, Darren J Newton, Anita Hill, Robert A S Ariëns
Paroxysmal nocturnal haemoglobinuria is a rare acquired haematological disorder, the most serious complication of which is thrombosis. The increased incidence of thrombosis in paroxysmal nocturnal haemoglobinuria is still poorly understood, but unlike many other thrombotic disorders, predominantly involves complement mediated mechanisms. This review article discusses the different factors that contribute to the increased risk of thrombosis in paroxysmal nocturnal haemoglobinuria. Paroxysmal nocturnal haemoglobinuria leads to a complex and multifaceted prothrombotic state due to the pathological effects of platelet activation, intravascular haemolysis and neutrophil/monocyte activation...
December 15, 2017: Haematologica
https://www.readbyqxmd.com/read/29228624/platelet-microparticle-mediated-transfer-of-mir-939-to-epithelial-ovarian-cancer-cells-promotes-epithelial-to-mesenchymal-transition
#5
Meiling Tang, Lu Jiang, Yingying Lin, Xiaoli Wu, Kai Wang, Qizhi He, Xipeng Wang, Weiping Li
Epithelial ovarian cancer (EOC) patients frequently suffer from thrombocytosis, which leads to a poor prognosis. However, the mechanism underlying platelet regulation of biological behavior in EOC remains unclear. The associations between clinicopathological characteristics and thrombocytosis in 171 EOC patients were studied, preoperative thrombocytosis was significantly associated with the stage, metastasis scope, level of preoperative CA125 and overall survival. When SKOV3 cells were cocultured with platelet microparticles (PMPs), the expression of molecules associated with epithelial-mesenchymal transition (EMT) was increased...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29228619/fibrin-bearing-microparticles-marker-of-thrombo-embolic-events-in-pancreatic-and-colorectal-cancers
#6
Diane Mege, Lydie Crescence, Mehdi Ouaissi, Igor Sielezneff, Regis Guieu, Françoise Dignat-George, Christophe Dubois, Laurence Panicot-Dubois
Background: Microparticles (MPs) are plasma membrane-derived extracellular vesicles present in the bloodstream. We have described a specific signature of MPs, called microparticulosome, in colorectal (CRC) and pancreatic (PC) cancers. We observed that levels of fibrin-bearing MPs were significantly increased in patients suffering from PC and CRC in comparison with control groups. Here, we hypothesised that fibrin-MPs may constitute a relevant biomarker of thrombosis associated with cancer...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29211120/cell-derived-microparticles-in-gingival-crevicular-fluid-from-periodontitis-patients-with-type-2-diabetes
#7
Carlos Marcelo Figueredo, Ronaldo Lira, Manuela Rubim Sete, Ricardo Guimarães Fischer
Cell-derived microparticles (MPs) have been described as vital contributors to the inflammatory process. However, its role in the periodontal disease pathogenesis remains unclear. Therefore, we aimed to detect the presence neutrophil (CD66b+) and platelet (CD41b+) derived microparticles in gingival crevicular fluid from individuals having periodontitis aggravated by type 2 diabetes. Twelve patients (56.2 ±7.2 yrs) with severe form of chronic periodontitis aggravated by type 2 diabetes were included. Clinical and metabolic data were gathered...
November 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29209923/plasma-microparticles-in-alzheimer-s-disease-the-role-of-vascular-dysfunction
#8
Soheila Hosseinzadeh, Maryam Noroozian, Esmaeil Mortaz, Kazem Mousavizadeh
Cerebrovascular lesions, a potent stimulus for endothelial cell activation, trigger cognitive and degenerative changes and contribute to pathology of Alzheimer's disease (AD). Circulating microparticles (MPs) are actively involved in the pathogenesis of AD and cerebrovascular diseases, which share common vascular risk factors. We examined the plasma changes of endothelial MPs (EMPs) and platelet MPs (PMPs) in AD patients with vascular risk factors. The plasma Annexin V+ CD 41a- CD144+ EMPs and Annexin V+ CD41a+ CD144- PMPs of 37 patients with AD, with or without vascular risk factors (hypertension, diabetes, dyslipidemia, stroke, coronary artery disease, and smoking), and 10 age-matched controls were quantified by flow cytometry...
December 5, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29193703/inflammation-and-thrombosis-roles-of-neutrophils-platelets-and-endothelial-cells-and-their-interactions-in-thrombus-formation-during-sepsis
#9
REVIEW
Toshiaki Iba, Jerrold H Levy
The inflammatory response and the activation of coagulation are two important responses in a host's defense against infection. These mechanisms do not work independently but cooperate in a complex and synchronous manner. Recent research has also shed light on the critical role of thrombus formation that prevents the dissemination of microbes. The cellular components of blood vessels, leukocytes, platelets, erythrocytes, and vascular endothelial cells play significant roles in the development of thrombi in combination with activation of the coagulation system...
November 29, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29183152/marathon-running-increases-circulating-endothelial-and-thrombocyte-derived-microparticles
#10
Viktoria Schwarz, Philip Düsing, Thomas Liman, Christian Werner, Juliane Herm, Katrin Bachelier, Matthias Krüll, Lars Brechtel, Gerhard J Jungehulsing, Wilhelm Haverkamp, Michael Böhm, Matthias Endres, Karl Georg Haeusler, Ulrich Laufs
Background Acute vascular effects of high intensity physical activity are incompletely characterized. Circulating microparticles are cellular markers for vascular activation and damage. Methods Microparticles were analysed in 99 marathon runners (49 ± 6 years, 22% female) of the prospective Berlin Beat of Running study. Blood samples were taken within three days before, immediately after and within two days after the marathon run. Endothelial-derived microparticles were labelled with CD144, CD31 and CD62E, platelet-derived microparticles with CD62P and CD42b, leukocyte-derived microparticles with CD45 and monocyte-derived microparticles with CD14...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/29180664/circulating-microparticles-in-acute-diabetic-charcot-foot-exhibit-a-high-content-of-inflammatory-cytokines-and-support-monocyte-to-osteoclast-cell-induction
#11
Jennifer Pasquier, Binitha Thomas, Jessica Hoarau-Véchot, Tala Odeh, Amal Robay, Omar Chidiac, Soha R Dargham, Rebal Turjoman, Anna Halama, Khalid Fakhro, Robert Menzies, Amin Jayyousi, Mahmoud Zirie, Jassim Al Suwaidi, Arash Rafii, Rayaz A Malik, Talal Talal, Charbel Abi Khalil
Circulating microparticles (MPs) are major mediators in cardiovascular complications of type 2 diabetes (T2D); however, their contribution to Charcot foot (CF) disease is not known. Here, we purified and assessed the origin, concentration and content of circulating MPs from 33 individuals: 11 with T2D and acute CF, 11 T2D patients with equivalent neuropathy and 11 non-diabetic controls. First, we demonstrated that there were no differences in the distribution of MPs of endothelial, platelet origin among the 3 groups...
November 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29132745/-membranous-microparticles-and-respiratory-disease
#12
REVIEW
B Renaud-Picard, J Toussaint, A Leclercq, J Reeb, L Kessler, F Toti, R Kessler
Microparticles (MP) are plasmic membrane fragments released from cells after physiological stimulation or stress conditions like inflammation or infection. Their production is correlated to the rate of cell apoptosis. All types of cells can produce MP but they are produced mainly by platelets, endothelial cells, and leukocytes. They carry many bio-active molecules on their surface, specific to the parental cell, giving them the ability to be biomarkers and bio-effectors. MP are present in circulating blood, tissues and many biological fluids...
November 10, 2017: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/29130961/endothelial-cell-derived-microparticles-from-patients-with-obstructive-sleep-apnea-hypoxia-syndrome-and-coronary-artery-disease-increase-aortic-endothelial-cell-dysfunction
#13
Lixin Jia, Jingyao Fan, Wei Cui, Sa Liu, Na Li, Wayne Bond Lau, Xinliang Ma, Jie Du, Shaoping Nie, Yongxiang Wei
BACKGROUND/AIMS: Obstructive sleep apnea hypoxia syndrome (OSAHS) is an independent risk factor for coronary artery disease (CAD). Treatment of OSAHS improves clinical outcome in some CAD patients, but the relationship between OSAHS and CAD is complex. Microparticles (MPs) are shed by the plasma membrane by either physiologic or pathologic stimulation. In the current study, we investigated the role of MPs in the context of OSAHS. METHODS AND RESULTS: 54 patients with both suspected coronary artery stenosis and OSAHS were recruited and underwent both coronary arteriography and polysomnography...
November 1, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29126756/-vascular-dysfunction-in-obstructive-sleep-apnoea-implication-of-microparticules
#14
REVIEW
W Trzepizur, P Priou, N Meslier, T Urban, M C Martínez, R Andriantsitohaina, F Gagnadoux
Obstructive sleep apnea (OSA) is associated with increased cardiovascular diseases, including myocardial infarction and stroke and promotes cardiovascular risk factors including diabetes and hypertension. OSA has also been proposed to have a direct proatherogenic effects. Recent studies have investigated the role of microparticles (MPs) in the atherogenic process. MPs are small plasma membrane vesicles that can be released by a variety of vascular or blood cells and that contain membrane and cytosolic elements...
November 7, 2017: Revue de Pneumologie Clinique
https://www.readbyqxmd.com/read/29119007/endothelial-dysfunction-is-associated-with-activation-of-the-type-i-interferon-system-and-platelets-in-patients-with-systemic-lupus-erythematosus
#15
Helena Tydén, Christian Lood, Birgitta Gullstrand, Christoffer Tandrup Nielsen, Niels H H Heegaard, Robin Kahn, Andreas Jönsen, Anders A Bengtsson
Objectives: Endothelial dysfunction may be connected to cardiovascular disease (CVD) in systemic lupus erythematosus (SLE). Type I interferons (IFNs) are central in SLE pathogenesis and are suggested to induce both endothelial dysfunction and platelet activation. In this study, we investigated the interplay between endothelial dysfunction, platelets and type I IFN in SLE. Methods: We enrolled 148 patients with SLE and 79 sex-matched and age-matched healthy controls (HCs)...
2017: RMD Open
https://www.readbyqxmd.com/read/29106832/-diabetes-mellitus-a-prothrombotic-disease
#16
F Picard, J Adjedj, O Varenne
In patients with acute atherothrombotic disease, diabetes or glucose intolerance is frequently found. Indeed, the number of people with diabetes in the world continues to increase and is expected to reach more than 500 million people by 2035. Diabetes is a pathology commonly associated with both microvascular and macrovascular complications. Although the mortality of coronary artery disease has decreased significantly over the past 20 years, mortality in patients with type 2 diabetes has changed little and atherothrombotic events remain the leading cause of death in diabetic patients...
October 26, 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/29101610/endothelial-microparticles-are-associated-to-pathogenesis-of-idiopathic-pulmonary-fibrosis
#17
Nour C Bacha, Adeline Blandinieres, Elisa Rossi, Nicolas Gendron, Nathalie Nevo, Séverine Lecourt, Coralie L Guerin, Jean Marie Renard, Pascale Gaussem, Eduardo Angles-Cano, Chantal M Boulanger, Dominique Israel-Biet, David M Smadja
Idiopathic pulmonary fibrosis (IPF) is a devastating disease characterized by obliteration of alveolar architecture, resulting in declining lung function and ultimately death. Pathogenic mechanisms remain unclear but involve a concomitant accumulation of scar tissue together with myofibroblasts activation. Microparticles (MPs) have been investigated in several human lung diseases as possible pathogenic elements, prognosis markers and therapeutic targets. We postulated that levels and cellular origins of circulating MPs might serve as biomarkers in IPF patients and/or as active players of fibrogenesis...
November 3, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/29039531/prognostic-implications-and-procoagulant-activity-of-phosphatidylserine-exposure-of-blood-cells-and-microparticles-in-patients-with-atrial-fibrillation-treated-with-pulmonary-vein-isolation
#18
Huan Meng, Junjie Kou, Ruishuang Ma, Wenbo Ding, Yan Kou, Muhua Cao, Zengxiang Dong, Yayan Bi, Hemant S Thatte, Jialan Shi
The present study aimed to evaluate the procoagulant effects of phosphatidylserine (PS) exposure on blood cells and microparticles (MPs), and examine its role in predicting early recurrence atrial fibrillation (ERAF) in patients with atrial fibrillation (AF) treated with pulmonary vein isolation (PVI). Blood samples were obtained from 40 healthy controls and 56 patients with AF at baseline (prior to PVI), and 0, 1 h, 1 day, 3 days and 7 days following PVI. The exposure of PS (PS+) to blood cells (platelets, erythrocytes and leukocytes) and MPs was detected using flow cytometry...
December 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29030343/carbohydrate-restriction-with-postmeal-walking-effectively-mitigates-postprandial-hyperglycemia-and-improves-endothelial-function-in-type-2-diabetes
#19
Monique Emily Francois, Etienne Myette-Cote, Tyler Daniel Bammert, Cody Durrer, Helena Neudorf, Christopher A DeSouza, Jonathan Peter Little
Postprandial hyperglycemia has deleterious effects on endothelial function. Restricting carbohydrate intake and postmeal walking have each been shown to reduce postprandial hyperglycemia but their combination and subsequent effects on endothelial function have not been investigated. Here, we sought to examine the effect of blunting postprandial hyperglycemia by following a low-carbohydrate diet, with or without postmeal walking exercise, on markers of vascular health in type 2 diabetes (T2D). In a randomized crossover design, individuals with T2D (N=11) completed three four-day controlled diet interventions consisting of i) low-carbohydrate diet alone (LC), ii) low-carbohydrate diet with 15-minute postmeal walks (LC+Ex), and iii) Low-fat control diet (CON)...
October 13, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28980454/incidence-risk-factors-and-outcomes-of-central-venous-catheter-related-thromboembolism-in-breast-cancer-patients-the-caveccas-study
#20
Philippe Debourdeau, Marc Espié, Sylvie Chevret, Joseph Gligorov, Antoine Elias, Pierre François Dupré, Kristell Desseaux, Issa Kalidi, Stephane Villiers, Sylvie Giachetti, Corinne Frere, Dominique Farge
Previous epidemiologic studies investigating central venous catheter (CVC)-related venous thromboembolism (CRT) were conducted in heterogenous cancer populations and data in breast cancer (BC) remain limited. To investigate the Doppler ultrasound (DUS)-CRT incidence, risk factors and outcomes in BC, we designed a prospective, multicenter cohort of nonmetastatic invasive BC patients undergoing insertion of a CVC for chemotherapy. All patients underwent double-blind DUS before, 7, 30, and 90 days after CVC insertion and a 6 months clinical follow-up...
November 2017: Cancer Medicine
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