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Platelet microparticles

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https://www.readbyqxmd.com/read/28428025/adipokines-as-atherothrombotic-risk-factors-in-obese-subjects-associations-with-haemostatic-markers-and-common-carotid-wall%C3%A2-thickness
#1
É Csongrádi, M Káplár, B Nagy, C A Koch, A Juhász, L Bajnok, Z Varga, I Seres, Z Karányi, M T Magyar, L Oláh, A Facskó, J Kappelmayer, G Paragh
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...
March 8, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28424820/microparticles-during-long-term-follow-up-after-acute-myocardial-infarction-association-to-atherosclerotic-burden-and-risk-of-cardiovascular-events
#2
Christina Christersson, Åsa Thulin, Agneta Siegbahn
Microparticles (MPs) are formed from platelets (PMPs), endothelial cells (EMPs) and monocytes (MMPs), and in acute myocardial infarction (MI), there is an increase of MPs in the culprit artery. In this study MPs were evaluated in whole blood in 105 patients with MI at five time-points during a two-year follow-up (FU). Patients with non-ST-elevated MI had higher concentrations of CD41+MPs compared to ST-elevated MI patients (p=0.024). The concentrations of PMPs in whole blood increased during the time period (p<0...
April 20, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28409836/platelet-derived-microparticles-regulates-thrombin-generation-via-phophatidylserine-in-abdominal-sepsis
#3
Yongzhi Wang, Su Zhang, Lingtao Luo, Eva Norström, Oscar Ö Braun, Matthias Mörgelin, Henrik Thorlacius
Sepsis is associated with dysfunctional coagulation. Recent data suggest that platelets play a role in sepsis by promoting neutrophil accumulation. Herein, we show that cecal ligation and puncture (CLP) triggered systemic inflammation, which is characterized by formation of IL-6 and CXC chemokines as well as neutrophil accumulation in the lung. Platelet depletion decreased neutrophil accumulation, IL-6 and CXC chemokines formation in septic lungs. Depletion of platelets increased peak thrombin formation and total thrombin generation (TG) in plasma from septic animals...
April 14, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28397383/passive-heat-stress-reduces-circulating-endothelial-and-platelet-microparticles
#4
Anthony R Bain, Philip N Ainslie, Tyler D Bammert, Jamie G Hijmans, Mypinder Sekhom, Ryan L Hoiland, Daniela Flück, Joseph Donnelly, Christopher A DeSouza
Interest in circulating endothelial- (EMPs) and platelet- (PMPs) derived microparticles has increased due to their potential pathogenic role in vascular disease and as biomarkers for vascular health. Hyperthermia is commonly associated with a proinflammatory stress, but may also provide vascular protection when the temperature elevation is non-pathological. Circulating microparticles may contribute to the cellular adjustments and resultant vascular impacts of hyperthermia. Here, we determined whether circulating concentrations of arterial EMPs and PMPs are altered by passive heat stress (+2°C esophageal temperature)...
April 11, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28375155/megakaryocytes-compensate-for-kit-insufficiency-in-murine-arthritis
#5
Pierre Cunin, Loka R Penke, Jonathan N Thon, Paul A Monach, Tatiana Jones, Margaret H Chang, Mary M Chen, Imene Melki, Steve Lacroix, Yoichiro Iwakura, Jerry Ware, Michael F Gurish, Joseph E Italiano, Eric Boilard, Peter A Nigrovic
The growth factor receptor Kit is involved in hematopoietic and nonhematopoietic development. Mice bearing Kit defects lack mast cells; however, strains bearing different Kit alleles exhibit diverse phenotypes. Herein, we investigated factors underlying differential sensitivity to IgG-mediated arthritis in 2 mast cell-deficient murine lines: KitWsh/Wsh, which develops robust arthritis, and KitW/Wv, which does not. Reciprocal bone marrow transplantation between KitW/Wv and KitWsh/Wsh mice revealed that arthritis resistance reflects a hematopoietic defect in addition to mast cell deficiency...
April 4, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28361115/detection-of-donor-derived-microparticles-in-the-peripheral-blood-of-a-hand-transplant-recipient-during-rejection
#6
Joseph Y Kim, Theodoros Kelesidis, Otto O Yang
BACKGROUND: Microparticles (MPs) are released from the plasma membrane of activated or dying cells and bear surface molecules from those cells. We examined whether donor-derived MPs in the peripheral blood of the recipient could serve as a marker of tissue damage due to rejection of a transplanted hand. METHODS: Platelet-free plasma from the recipient of the transplanted hand was analyzed for MPs bearing the donor-specific HLA molecule A*02 using flow cytometry...
March 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28355122/the-platelets-perspective-to-pathogen-reduction-technologies
#7
Abdimajid Osman, Walter E Hitzler, Patrick Provost
A wide variety of clinical conditions, associated with low circulating platelet counts, require platelet transfusion in order to normalize hemostatic function. Although single-donor apheresis platelets bear the lowest risk of transfusion-transmitted infections, pathogen reduction technologies (PRT) are being implemented worldwide to reduce this risk further through inactivation of known, emergent and as yet to be discovered nucleic acid-based pathogens. Human blood platelets are now known to harbor a diverse transcriptome, important to their function and comprised of >5000 protein-coding messenger RNAs and different classes of non-coding RNAs, including microRNAs...
March 29, 2017: Platelets
https://www.readbyqxmd.com/read/28314136/platelet-microparticle-inspired-clot-responsive-nanomedicine-for-targeted-fibrinolysis
#8
Christa L Pawlowski, Wei Li, Michael Sun, Kavya Ravichandran, DaShawn Hickman, Clarissa Kos, Gurbani Kaur, Anirban Sen Gupta
Intravascular administration of plasminogen activators is a clinically important thrombolytic strategy to treat occlusive vascular conditions. A major issue with this strategy is the systemic off-target drug action, which affects hemostatic capabilities and causes substantial hemorrhagic risks. This issue can be potentially resolved by designing technologies that allow thrombus-targeted delivery and site-specific action of thrombolytic drugs. To this end, leveraging a liposomal platform, we have developed platelet microparticle (PMP)-inspired nanovesicles (PMINs), that can protect encapsulated thrombolytic drugs in circulation to prevent off-target uptake and action, anchor actively onto thrombus via PMP-relevant molecular mechanisms and allow drug release via thrombus-relevant enzymatic trigger...
June 2017: Biomaterials
https://www.readbyqxmd.com/read/28279502/circulating-microparticle-subpopulations-in-systemic-lupus-erythematosus-are-affected-by-disease-activity
#9
Patricia López, Javier Rodríguez-Carrio, Aleida Martínez-Zapico, Luis Caminal-Montero, Ana Suárez
BACKGROUND: Immune cells under chronic inflammation shed microparticles (MPs) that could fuel the inflammatory responses and atherosclerosis typically presented in systemic lupus erythematosus (SLE). This study analyzes total and subset-specific MPs from SLE patients and their possible influence on clinical features, leukocyte activation and serum cytokines. METHODS: Total MPs and those derived from platelets, endothelial cells, monocytes, granulocytes and T-cells were quantified in plasma of 106 SLE patients and 33 healthy controls by flow cytometry...
June 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28275651/platelet-microparticles-a-biomarker-for-recanalization-in-rtpa-treated-ischemic-stroke-patients
#10
Andrew Bivard, Lisa F Lincz, Jane Maquire, Mark Parsons, Christopher Levi
OBJECTIVES: Identification of a biomarker for acute recanalization could have significant clinical impact. METHODS: We prospectively collected baseline, 24-h, and 90-day clinical and imaging data from consecutive ischemic stroke patients who fulfilled standard clinical eligibility criteria for treatment with intravenous recombinant tissue plasminogen activator (rtPA). Computed tomography angiography was acquired at 24 h and assessed using the thrombolysis is myocardial infarction (TIMI) scale with a score of 2b/3 indicating recanalization...
March 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/28273997/teneligliptin-in-management-of-diabetic-kidney-disease-a-review-of-place-in-therapy
#11
REVIEW
Mohammed Abubaker, Preetesh Mishra, Onkar C Swami
Diabetes is a global health emergency of this century. Diabetic nephropathy is the most common microvascular complication associated with Type 2 Diabetes Mellitus (T2DM). T2DM has been reported as a major etiological factor in almost 45% of patients undergoing dialysis due to kidney failure. Lifestyle modifications; cessation of smoking, optimum control of blood glucose, blood pressure and lipids are required to reduce the progression of Diabetic Kidney Disease (DKD). Presently, Dipeptidyl peptidase-4 (DPP-4) inhibitors are preferred in the management of T2DM due to their established efficacy; favorable tolerability including, low risk of hypoglycaemia; weight neutrality and convenient once-a-day dosage...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28264799/uremic-solute-indoxyl-sulfate-induced-platelet-hyperactivity-contributes-to-ckd-associated-thrombosis-in-mice
#12
Ke Yang, Changhong Du, Xinmiao Wang, Fengju Li, Yang Xu, Song Wang, Shilei Chen, Fang Chen, Mingqiang Shen, Mo Chen, Mengjia Hu, Ting He, Yongping Su, Junping Wang, Jinghong Zhao
Thrombosis is a common complication of chronic kidney disease (CKD), but the causes and mechanisms of CKD-associated thrombosis are not well clarified. Here, we show that platelet activity is remarkably enhanced in CKD mice, with increase of serum indoxyl sulfate (IS), a typical uremic toxin which cannot be effectively cleared by routine dialysis. Ex vivo and in vitro experiments reveal that IS displays a distinct ability to enhance platelet activities, including elevated response to collagen and thrombin, increases in platelet-derived microparticles and platelet-monocyte aggregates...
March 6, 2017: Blood
https://www.readbyqxmd.com/read/28259616/observational-retrospective-study-of-vascular-modulator-changes-during-treatment-in-essential-thrombocythemia
#13
Andrea Piccin, Michael Steurer, Clemens Feistritzer, Ciaran Murphy, Elva Eakins, Muriel Van Schilfgaarde, Daisy Corvetta, Angela Maria Di Pierro, Irene Pusceddu, Luigi Marcheselli, Roberto Gambato, Martin Langes, Dino Veneri, Omar Perbellini, Enrica Pacquola, Michele Gottardi, Filippo Gherlinzoni, Andrea Mega, Martina Tauber, Guido Mazzoleni, Elisa Piva, Mario Plebani, Mauro Krampera, Günther Gastl
Essential thrombocythemia (ET) patients are at risk of developing thrombotic events. Qualitative platelet (PLT) abnormalities and activation of endothelial cells (ECs) and PLTs are thought to be involved. Microparticles (MPs) can originate from PLTs (PMPs), ECs (EMPs), or red cells (RMPs). Previous studies have indicated that MPs contribute to ET pathophysiology. Endothelial modulators (eg, nitric oxide [NO], adrenomedullin [ADM], and endothelin-1 [ET-1]) are also involved in the pathophysiology of this condition...
February 14, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28249919/evaluation-of-plasma-platelet-microparticles-in-thrombotic-thrombocytopenic-purpura
#14
Leila Tahmasbi, Mehran Karimi, Sedigheh Amini Kafiabadi, Mahin Nikougoftar, Sezaneh Haghpanah, Reza Ranjbaran, Mohamad Moghadam
BACKGROUND: Platelet microparticles (PMPs) have a procoagulant activity about 50-100 times greater than active platelets due to high expression of negatively charged phospholipids on their surfaces. In this study, we evaluated microparticle immunophenotyping and also plasma PMPs level in patients with Thrombotic Thrombocytopenic Purpura (TTP) in Southern Iran. METHOD: We had two study groups: 15 TTP patients and 15 healthy control group and PMPs from platelet concentrate (PC) at the 5(th) day of storage...
January 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28238741/microparticles-in-nasal-lavage-fluids-in-chronic-rhinosinusitis-potential-biomarkers-for-diagnosis-of-aspirin-exacerbated-respiratory-disease
#15
Toru Takahashi, Atsushi Kato, Sergejs Berdnikovs, Whitney W Stevens, Lydia A Suh, James E Norton, Roderick G Carter, Kathleen E Harris, Anju T Peters, Kathryn E Hulse, Leslie C Grammer, Kevin C Welch, Stephanie Shintani-Smith, Bruce K Tan, David B Conley, Robert C Kern, Bruce S Bochner, Robert P Schleimer
BACKGROUND: Microparticles (MPs) are submicron-sized shed membrane vesicles released from activated or injured cells and are detectable by flow cytometry. MP levels have been used as biomarkers to evaluate cell injury or activation in patients with pathological conditions. OBJECTIVE: We sought to compare MP types and levels in nasal lavage fluids (NLFs) from controls and patients with chronic rhinosinusitis without nasal polyps (CRSsNP), chronic rhinosinusitis with nasal polyps (CRSwNP), and aspirin-exacerbated respiratory disease (AERD)...
February 24, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28229158/detection-of-procoagulant-imbalance-modified-endogenous-thrombin-potential-with-results-expressed-as-ratio-of-values-with-to-without-thrombomodulin
#16
Armando Tripodi
Each individual possesses his/her own endogenous-thrombin-potential (ETP) (i. e. the ability to generate thrombin) which depends on the relative strength of the pro- and anticoagulant drivers operating in plasma. This ability depends in turn on the clinical conditions in which the balance between the two drivers is variably affected. One of the major determinants of this balance is the factor (F)VIII-protein C(PC) axis and its effect can be conveniently explored by the thrombin generation procedures with results expressed as ETP ratio with/without thrombomodulin (TM) (ETP-TM ratio)...
February 23, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28228072/curcumin-and-endothelial-function-evidence-and-mechanisms-of-protective-effects
#17
Maryam Saberi Karimian, Matteo Pirro, Thomas P Johnston, Muhammed Majeed, Amirhossein Sahebkar
BACKGROUND: The endothelium is a large paracrine organ regulating cell growth, vascular tone and thrombogenicity as well as platelet and leukocyte interactions. Endothelial function can be assessed by non-invasive techniques [e.g. flow-mediated vasodilation, nitroglycerin-mediated dilation and pulse wave velocity] and measuring specific circulating biomarkers [cell adhesion molecules, endothelial microparticles and endothelial progenitor cells]. Impaired endothelial function plays a key role in the development of atherosclerosis, arterial hypertension, heart failure, ischemia-reperfusion injury, Alzheimer's disease and other conditions...
February 22, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28214553/mimicking-oxygen-delivery-and-waste-removal-functions-of-blood
#18
REVIEW
Huaifa Zhang, Jake E Barralet
In addition to immunological and wound healing cell and platelet delivery, ion stasis and nutrient supply, blood delivers oxygen to cells and tissues and removes metabolic wastes. For decades researchers have been trying to develop approaches that mimic these two immediately vital functions of blood. Oxygen is crucial for the long-term survival of tissues and cells in vertebrates. Hypoxia (oxygen deficiency) and even at times anoxia (absence of oxygen) can occur during organ preservation, organ and cell transplantation, wound healing, in tumors and engineering of tissues...
February 16, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28210898/flow-cytometric-analysis-reveals-the-high-levels-of-platelet-activation-parameters-in-circulation-of-multiple-sclerosis-patients
#19
Agnieszka Morel, Joanna Rywaniak, Michał Bijak, Elżbieta Miller, Marta Niwald, Joanna Saluk
The epidemiological studies confirm an increased risk of cardiovascular disease in multiple sclerosis, especially prothrombotic events directly associated with abnormal platelet activity. The aim of our study was to investigate the level of blood platelet activation in the circulation of patients with chronic phase of multiple sclerosis (SP MS) and their reactivity in response to typical platelets' physiological agonists. We examined 85 SP MS patients diagnosed according to the revised McDonald's criteria and 50 healthy volunteers as a control group...
February 16, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28207887/platelet-monocyte-derived-and-tissue-factor-carrying-circulating-microparticles-are-related-to-acute-myocardial-infarction-severity
#20
Gemma Chiva-Blanch, Kristian Laake, Peder Myhre, Vibeke Bratseth, Harald Arnesen, Svein Solheim, Lina Badimon, Ingebjørg Seljeflot
OBJECTIVE: Circulating microparticles (cMPs) are phospholipid-rich vesicles released from cells when activated or injured, and contribute to the formation of intracoronary thrombi. Tissue factor (TF, CD142) is the main trigger of fibrin formation and TF-carrying cMPs are considered one of the most procoagulant cMPs. Similar types of atherosclerotic lesions may lead to different types of AMI, although the mechanisms behind are unresolved. Therefore, we aimed to investigate the phenotype of cMPs found in plasma of ACS patients and its relation to AMI severity and thrombotic burden...
2017: PloS One
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