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Platelet derived microparticle

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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
#1
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
#2
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/29101610/endothelial-microparticles-are-associated-to-pathogenesis-of-idiopathic-pulmonary-fibrosis
#3
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
#4
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/28980454/incidence-risk-factors-and-outcomes-of-central-venous-catheter-related-thromboembolism-in-breast-cancer-patients-the-caveccas-study
#5
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
https://www.readbyqxmd.com/read/28972406/brain-derived-microparticles-in-patients-with-severe-isolated-tbi
#6
M Nekludov, B-M Bellander, D Gryth, H Wallen, F Mobarrez
PRIMARY OBJECTIVE: to investigate the presence of circulating microparticles (MPs) of brain tissue origin in the systemic and cerebrovenous blood of patients with severe traumatic brain injury (TBI). RESEARCH DESIGN: Prospective observational study in 15 consecutive patients with severe isolated TBI. METHODS AND PROCEDURES: We repeatedly measured concentrations of MPs expressing glial fibrillary acidic protein (GFAP), neuron-specific enolase (NSE) and aquaporin-4 (AQP4), in arterial and cerebrovenous blood at admittance to hospital and up to 72 hours after the injury...
October 3, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28906481/insights-into-the-diagnostic-potential-of-extracellular-vesicles-and-their-mirna-signature-from-liquid-biopsy-as-early-biomarkers-of-diabetic-micro-macrovascular-complications
#7
REVIEW
Valeria La Marca, Alessandra Fierabracci
Extracellular vesicles (EVs) represent a heterogeneous population of small vesicles, consisting of a phospholipidic bilayer surrounding a soluble interior cargo. Almost all cell types release EVs, thus they are naturally present in all body fluids. Among the several potential applications, EVs could be used as drug delivery vehicles in disease treatment, in immune therapy because of their immunomodulatory properties and in regenerative medicine. In addition to general markers, EVs are characterized by the presence of specific biomarkers (proteins and miRNAs) that allow the identification of their cell or tissue origin...
September 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28883845/the-impact-of-hyperglycemia-and-hyperlipidemia-on-plasma-p-selectin-and-platelet-markers-after-ischemic-stroke
#8
Malgorzata Pawelczyk, Beata Kaczorowska, Zbigniew Baj
INTRODUCTION: Platelet activation plays a key role in the pathogenesis of ischemic cerebrovascular diseases. Thus, it is very important to identify novel pharmacological targets for platelet inhibition to improve ischemic stroke treatment. The aim of the study was to assess the relationship between metabolic disorders and platelet activity markers in patients with acute ischemic stroke. MATERIAL AND METHODS: Ninety-four patients with acute ischemic stroke were divided into four groups with: normolipidemia and normoglycemia (NL/NG), n = 25; normolipidemia and hyperglycemia (NL/HG), n = 21; hyperlipidemia and normoglycemia (HL/NG), n = 27; hyperlipidemia and hyperglycemia (NL/NG), n = 21...
August 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28882977/influence-of-diabetes-on-circulating-apoptotic-microparticles-in-patients-with-chronic-hepatitis-c
#9
Jolanta Zuwala-Jagiello, Monika Pazgan-Simon, Eugenia Murawska-Cialowicz, Krzysztof Simon
BACKGROUND/AIM: Type 2 diabetes mellitus (DM) frequently occurs in patients with chronic hepatitis C (CHC) and is associated with atherosclerosis, in which circulating microparticles (MPs) play an important role. We asked whether the presence of DM affects endothelial-derived (EMPs) and platelet-derived microparticles (PMPs) levels; and whether MPs levels associate with biomarkers of inflammation and oxidative stress in patients with CHC. MATERIALS AND METHODS: Overall, 136 patients were enrolled in the study, 86 CHC patients (41 with DM with moderate glycemic control), 20 outpatients with DM and 30 controls...
September 2017: In Vivo
https://www.readbyqxmd.com/read/28841240/preanalytic-processing-of-rat-plasma-influences-thrombin-generation-and-fibrinolysis-assays
#10
Marjory B Brooks, Alyssa P Stablein, Lynn Johnson, Albert Eric Schultze
BACKGROUND: Thrombin generation assays (TGA) have potential applications as measures of hemostatic balance in animal models. However, variations in plasma processing greatly influence human TGA, and may also impact on the translational value of TGA in animal studies. OBJECTIVES: The purpose of the study was to compare the performance characteristics of Sprague-Dawley rat plasma prepared by single vs double centrifugation protocols in TGA and fibrinolysis assays...
August 25, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28836262/immune-status-of-patients-with-haemophilia-a-before-exposure-to-factor-viii-first-results-from-the-hemfil-study
#11
MULTICENTER STUDY
Letícia L Jardim, Daniel G Chaves, Amanda C O Silveira-Cassette, Ana Cristina Simões E Silva, Marcio P Santana, Monica H Cerqueira, Alessandra Prezotti, Claudia Lorenzato, Vivian Franco, Johanna G van der Bom, Suely M Rezende
Previous cross-sectional studies showed that some patients with haemophilia A (HA) without inhibitor presented a pro-inflammatory profile during factor VIII (FVIII) replacement therapy. Furthermore, an anti-inflammatory/regulatory state was described in HA patients after inhibitor development. However, no study investigated the levels of these biomarkers before exposure to exogenous FVIII. This study investigated the immunological profile of previously untreated patients (PUPs) with HA in comparison with non-haemophiliac boys...
September 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28814907/new-prognostic-biomarkers-and-therapeutic-effect-of-bevacizumab-for-patients-with-non-small-cell-lung-cancer
#12
Maiko Niki, Takashi Yokoi, Takayasu Kurata, Shosaku Nomura
BACKGROUND: Several biomarkers have emerged as potential prognostic and predictive markers for non-small-cell lung cancer (NSCLC). Successful inhibition of angiogenesis with the antivascular endothelial growth factor antibody, bevacizumab, has improved the efficacy seen with standard cytotoxic therapy of NSCLC. However, despite such enhanced treatment strategies, the prognosis for patients with advanced NSCLC remains poor. PATIENTS AND METHODS: We assessed potential biomarkers in 161 NSCLC patients and 42 control patients...
2017: Lung Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28774828/flow-rate-calibration-to-determine-cell-derived-microparticles-and-homogeneity-of-blood-components
#13
Egarit Noulsri, Surada Lerdwana, Kulvara Kittisares, Attakorn Palasuwan, Duangdao Palasuwan
BACKGROUND: Cell-derived microparticles (MPs) are currently of great interest to screening transfusion donors and blood components. However, the current approach to counting MPs is not affordable for routine laboratory use due to its high cost. AIM: The current study aimed to investigate the potential use of flow-rate calibration for counting MPs in whole blood, packed red blood cells (PRBCs), and platelet concentrates (PCs). METHODS: The accuracy of flow-rate calibration was investigated by comparing the platelet counts of an automated counter and a flow-rate calibrator...
July 18, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28770875/levels-of-platelet-derived-microparticles-and-soluble-p-selectin-in-patients-of-acute-myocardial-infarction-case-control-study
#14
Aisha Hameed, Zille Rubab, Syed Khizar Abbas Rizvi, Shabbir Hussain, Waqas Latif, Shahida Mohsin
OBJECTIVE: TTo measure levels of platelet-derived microparticles and soluble P-selectin in patients of acute myocardial infarction and their comparison with healthy controls. METHODS: This case-control study was conducted in Department of Haematology, University of Health Sciences Lahore from April to September 2013, and comprised patients of acute myocardial infarction in group 1 and healthy controls in group 2. Platelet-derived microparticles and soluble P-selectin were measured by enzyme-linked immunosorbent assay...
July 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28766731/microparticles-from-stored-red-blood-cells-enhance-procoagulant-and-proinflammatory-activity
#15
Dania Fischer, Julian Büssow, Patrick Meybohm, Christian Friedrich Weber, Kai Zacharowski, Anja Urbschat, Markus Matthias Müller, Carla Jennewein
BACKGROUND: The pathomechanisms of morbidity due to blood transfusions are not yet entirely understood. Elevated levels of red blood cell-derived microparticles (RMPs) are found in coagulation-related pathologies and also in stored blood. Previous research has shown that RMPs mediate transfusion-related complications by the intrinsic pathway. We hypothesized that RMPs might play a role in post-transfusion thrombotic complications by enhancing procoagulant activity also through the extrinsic pathway of coagulation...
August 2, 2017: Transfusion
https://www.readbyqxmd.com/read/28748286/normalized-levels-of-red-blood-cells-expressing-phosphatidylserine-their-microparticles-and-activated-platelets-in-young-patients-with-%C3%AE-thalassemia-following-bone-marrow-transplantation
#16
Phatchanat Klaihmon, Sinmanus Vimonpatranon, Egarit Noulsri, Surapong Lertthammakiat, Usanarat Anurathapan, Nongnuch Sirachainan, Suradej Hongeng, Kovit Pattanapanyasat
Bone marrow transplantation (BMT) serves as the only curative treatment for patients with β-thalassemia major; however, hemostatic changes have been observed in these BMT patients. Aggregability of thalassemic red blood cells (RBCs) and increased red blood cell-derived microparticles (RMPs) expressing phosphatidylserine (PS) are thought to participate in thromboembolic events by initially triggering platelet activation. To our knowledge, there has been no report providing quantitation of these circulating PS-expressing RBCs and RMPs in young β-thalassemia patients after BMT...
July 26, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28718695/enhanced-procoagulant-activity-of-platelets-after-chemotherapy-in-non-small-cell-lung-cancer
#17
Ruishuang Ma, Yayan Bi, Junjie Kou, Jin Zhou, Jialan Shi
The procoagulant status of patients with non-small cell lung cancer (NSCLC) after chemotherapy is poorly characterized and the role of platelets in hypercoagulative state of NSCLC is unknown. The aim of this study was to evaluate the procoagulant activity (PCA) of platelets in NSCLC before and after chemotherapy. The subjects were 52 patients newly diagnosed with NSCLC. The patients had decreased clotting time compared with healthy subjects, and the thrombin-antithrombin complex increased 2.5-fold after chemotherapy...
August 3, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/28718063/new-insights-on-platelets-and-platelet-derived-microparticles-in-systemic-lupus-erythematosus
#18
REVIEW
Marc Scherlinger, Vanja Sisirak, Christophe Richez, Estibaliz Lazaro, Pierre Duffau, Patrick Blanco
PURPOSE OF REVIEW: Current knowledge on the role of platelets and platelet-derived microparticles (PMPs) on the immune system has been fast-growing. Systemic lupus erythematosus (SLE) is a systemic auto-immune disorder characterized by a loss of tolerance toward nuclear auto-antigens. Although recent studies allowed a better understanding of SLE pathogenesis, there is an urgent need for the development of new treatments and the identification of new biomarkers to assess the disease activity...
August 2017: Current Rheumatology Reports
https://www.readbyqxmd.com/read/28704431/modulation-of-platelet-derived-microparticles-to-adhesion-and-motility-of-human-rheumatoid-arthritis-fibroblast-like-synoviocytes
#19
Wenwen Wang, Jiahuan Liu, Binzhou Yang, Zhongshuang Ma, Guiping Liu, Weigan Shen, Yu Zhang
Platelet-derived microparticles (PMPs) are closely associated with disease activity in rheumatoid arthritis (RA) and contribute to the inflammatory process. Rheumatoid arthritis fibroblast-like synoviocytes (RA-FLSs) play important roles in the progression of joint destruction. The aim of this study is to demonstrate whether PMPs affect the adhesion and motility of RA-FLSs. Our data indicated that PMPs promoted migration, invasion and adhesion to extracellular matrix (ECM) of RA-FLSs. Further study showed that PMPs up-regulated the expression of matrix metalloproteinase-1 (MMP1) and increased the level of phosphorylation of NF-κB (p-NF-κB) and Erk (p-Erk) in RA-FLSs...
2017: PloS One
https://www.readbyqxmd.com/read/28681632/graft-product-for-autologous-peripheral-blood-stem-cell-transplantation-enhances-thrombin-generation-and-expresses-procoagulant-microparticles-and-tissue-factor
#20
Fatoumata Sidibe, Anastasia Spanoudaki, Valerie Vanneaux, Elisabeth Mbemba, Jerome Larghero, Patrick Van Dreden, Jean-Pierre Lotz, Ismail Elalamy, Annette K Larsen, Grigoris T Gerotziafas
The beneficial effect of autologous peripheral blood stem cell transplantation (APBSCT) may be compromised by acute vascular complications related to hypercoagulability. We studied the impact of graft product on thrombin generation of normal plasma and the expression of tissue factor (TF) and procoagulant platelet-derived procoagulant microparticles (Pd-MPs) in samples of graft products. Graft products from 10 patients eligible for APBSCT were mixed with platelet-poor plasma (PPP) or platelet-rich plasma (PRP) from healthy volunteers and assessed for in vitro thrombin generation...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
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