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Platelet derived microparticle

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https://www.readbyqxmd.com/read/28774828/flow-rate-calibration-to-determine-cell-derived-microparticles-and-homogeneity-of-blood-components
#1
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
#2
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
#3
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
#4
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
#5
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...
July 18, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/28718063/new-insights-on-platelets-and-platelet-derived-microparticles-in-systemic-lupus-erythematosus
#6
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
#7
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
#8
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
https://www.readbyqxmd.com/read/28681240/platelets-and-cancer-angiogenesis-nexus
#9
Marek Z Wojtukiewicz, Ewa Sierko, Dominika Hempel, Stephanie C Tucker, Kenneth V Honn
There has been remarkable insight into the importance of platelets in a wide range of pathophysiologic events, including inflammation and cancer progression. Thrombocytosis in cancer patients is a common finding. Tumor cells induce platelet activation and subsequent aggregation through direct and indirect mechanisms. Platelets are recognized to contribute to metastatic dissemination. There is plenty of evidence that components of the hemostatic system contribute to the process of angiogenesis. Furthermore, there are accumulated data on the substantial influence of blood platelets in the process of blood vessel formation during malignancy...
July 5, 2017: Cancer Metastasis Reviews
https://www.readbyqxmd.com/read/28657582/biocompatibility-of-hbv-liposome-encapsulated-hemoglobin-molecules-liposome-effects-on-immune-function
#10
REVIEW
Hiroshi Azuma, Mitsuhiro Fujihara, Hiromi Sakai
Hemoglobin vesicles (HbVs) are oxygen carriers consisting of Hb molecules and liposome in which human hemoglobin (Hb) molecules are encapsulated. Investigations of HbV biocompatibility have shown that HbVs have no significant effect on either the quality or quantity of blood components such as RBC, WBC, platelets, complements, or coagulation factors, reflecting its excellent biocompatibility. However, their effects on the immune system remain to be evaluated. HbVs might affect the function of macrophages because they accumulate in the reticuloendothelial system...
June 28, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/28649187/distinct-proteome-pathology-of-circulating-microparticles-in-systemic-lupus-erythematosus
#11
Ole Østergaard, Christoffer Tandrup Nielsen, Julia T Tanassi, Line V Iversen, Søren Jacobsen, Niels H H Heegaard
BACKGROUND: The pathogenesis of systemic lupus erythematosus (SLE) is poorly understood but has been linked to defective clearance of subcellular particulate material from the circulation. This study investigates the origin, formation, and specificity of circulating microparticles (MPs) in patients with SLE based on comprehensive MP proteome profiling using patients with systemic sclerosis (SSc) and healthy donors (HC) as controls. METHODS: We purified MPs from platelet-poor plasma using differential centrifugation of samples from SLE (n = 45), SSc (n = 38), and two sets of HC (n = 35, n = 25)...
2017: Clinical Proteomics
https://www.readbyqxmd.com/read/28624718/microparticles-in-acute-coronary-syndrome
#12
Chrysostomos A Mavroudis, Despina Eleftheriou, Ying Hong, Bikash Majumder, Sudheer Koganti, Ray Sapsford, Janet North, Mark Lowdell, Nigel Klein, Paul Brogan, Roby D Rakhit
BACKGROUND: Emerging evidence supports the role of cell-derived microparticles (MPs) in the pathophysiology of acute coronary syndrome (ACS). OBJECTIVES: To explore the relationship between coronary and systemic MP levels, investigate the correlation between MPs, inflammatory markers and Troponin T in patients with ACS. METHODS: Thirty seven patients with ACS scheduled for percutaneous coronary interventions (PCI) were studied. Eleven patients with stable angina (SA) were included as a control group...
June 9, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28581272/the-usefulness-of-platelet-derived-microparticle-as-biomarker-of-antiplatelet-therapy-in-kawasaki-disease
#13
Hyun Jung Kim, Eun Hye Choi, Yeon Jung Lim, Hong Ryang Kil
Little is known about platelet dynamics and the effect of antiplatelet therapy in Kawasaki disease (KD). This study sought to define platelet activation dynamics in KD patients by assaying platelet-derived microparticles (PDMPs). We measured plasma PDMPs levels in 46 patients with KD using an enzyme-linked immunosorbent assay (ELISA). Blood samples were collected before, at 2-5 days, and 9-15 days after intravenous immunoglobulin (IVIG) infusion, 2 months and 4-5 months after the onset of KD. We measured PDMP levels in 23 febrile and 10 afebrile control patients...
July 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28561434/intracellular-origin-and-ultrastructure-of-platelet-derived-microparticles
#14
A A Ponomareva, T A Nevzorova, E R Mordakhanova, I A Andrianova, L Rauova, R I Litvinov, J W Weisel
Essentials Platelet microparticles play a major role in pathologies, including hemostasis and thrombosis. Platelet microparticles have been analyzed and classified based on their ultrastructure. The structure and intracellular origin of microparticles depend on the cell-activating stimulus. Thrombin-treated platelets fall apart and form microparticles that contain cellular organelles. SUMMARY: Background Platelet-derived microparticles comprise the major population of circulating blood microparticles that play an important role in hemostasis and thrombosis...
May 31, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28531186/parvovirus-b19-induced-vascular-damage-in-the-heart-is-associated-with-elevated-circulating-endothelial-microparticles
#15
Katrin Bachelier, Susanne Biehl, Viktoria Schwarz, Ingrid Kindermann, Reinhard Kandolf, Martina Sauter, Christian Ukena, Ali Yilmaz, Karen Sliwa, Claus-Thomas Bock, Karin Klingel, Michael Böhm
BACKGROUND: Diagnosis of viral myocarditis is difficult by clinical criteria but facilitated by detection of inflammation and viral genomes in endomyocardial biopsies. Parvovirus B19 (B19V) targets endothelial cells where viral nucleic acid is exclusively detected in the heart. Microparticles (MPs) are released after cell damage or activation of specific cells. We aimed to investigate whether circulating endothelial MPs (EMPs) in human and experimental models of myocarditis are associated with B19V myocarditis...
2017: PloS One
https://www.readbyqxmd.com/read/28520220/endothelial-damage-effects-of-circulating-microparticles-from-patients-with-stable-angina-is-reduced-by-aspirin-though-erk-p38-mapks-pathways
#16
Cheng Gong, Xue-Feng Shan, Xu-Lang Wang, Wei-Wei Dong, Zhe Li, D Xin-Hong Liu, Wei Zhang, Kun Xing, Feng-Jun Chang
INTRODUCTION: Platelet activation participate in the development of both coronary artery disease (CAD) and circulating microparticles (MPs). As a commonly used medicine for coronary heart disease, whether aspirin affects the function of MPs remains unclear. AIMS: This study was designed to test MPs from healthy subjects, stable angina (SA) patients before and after aspirin administration were obtained. MPs origins were tested by flow cytometry. Rat thoracic aortas were incubated with MPs (with or without aspirin) to determine the effects of MPs on expression of ERK1/2, JNKs and p38 MAPK...
May 18, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28500171/platelet-microparticles-infiltrating-solid-tumors-transfer-mirnas-that-suppress-tumor-growth
#17
James V Michael, Jeremy G T Wurtzel, Guang Fen Mao, A Koneti Rao, Mikhail A Kolpakov, Abdelkarim Sabri, Nicholas E Hoffman, Sudarsan Rajan, Dhanendra Tomar, Muniswamy Madesh, Marvin T Nieman, Johnny Yu, Leonard C Edelstein, Jesse W Rowley, Andrew S Weyrich, Lawrence E Goldfinger
Platelet-derived microparticles (PMPs) are associated with enhancement of metastasis and poor cancer outcomes. Circulating PMPs transfer platelet microRNAs (miRNAs) to vascular cells. Solid tumor vasculature is highly permeable, allowing the possibility of PMP-tumor cell interaction. Here, we show that PMPs infiltrate solid tumors in humans and mice and transfer platelet-derived RNA, including miRNAs, to tumor cells in vivo and in vitro, resulting in tumor cell apoptosis. MiR-24 was a major species in this transfer...
August 3, 2017: Blood
https://www.readbyqxmd.com/read/28489923/differences-of-microparticle-patterns-between-sickle-cell-anemia-and-hemoglobin-sc-patients
#18
Yohann Garnier, Séverine Ferdinand, Maryse Etienne-Julan, Gisèle Elana, Marie Petras, Lydia Doumdo, Benoit Tressières, Marie-Laure Lalanne-Mistrih, Marie-Dominique Hardy-Dessources, Philippe Connes, Marc Romana
Sickle cell anemia (SCA) and hemoglobin SC (HbSC) disease are the two most common forms of sickle cell disease (SCD), a frequent hemoglobinopathy which exhibits a highly variable clinical course. Although high levels of microparticles (MPs) have been consistently reported in SCA and evidence of their harmful impact on the SCA complication occurrences have been provided, no data on MP pattern in HbSC patients has been reported so far. In this study, we determined and compared the MP patterns of 84 HbSC and 96 SCA children, all at steady-state, using flow cytometry...
2017: PloS One
https://www.readbyqxmd.com/read/28478796/platelet-derived-mir-142-3p-induces-apoptosis-of-endothelial-cells-in-hypertension
#19
H Bao, Q-P Yao, K Huang, X-H Chen, Y Han, Z-L Jiang, L-Z Gao, Y-X Qi
The dysfunction of endothelial cells (ECs) plays crucial roles in vascular remodeling during hypertension. Researches suggested that ECs are regulated by the circulating platelets in vivo, which may participate in abnormal EC apoptosis in hypertension. However the molecular mechanism in this process is still unclear. Here we focused on the microRNAs (miRs) in platelets, and detected the potential role and delivery mechanism of platelet-derived miRs in ECs. Using microarray, the differentially expressed profile of miRs between platelets and ECs was detected...
April 29, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28465231/rac1-regulates-sepsis-induced-formation-of-platelet-derived-microparticles-and-thrombin-generation
#20
Yongzhi Wang, Lingtao Luo, Matthias Mörgelin, Henrik Thorlacius
Dysfunctional coagulation aggravates clinical outcome in patients with sepsis. The aim of this study was to define the role of Rac-1 in the formation of platelet-derived microparticles (PMPs) and thrombin generation (TG) in abdominal sepsis. Male C57BL/6 mice underwent cecal ligation and puncture (CLP). Scanning electron microscopy and flow cytometry were used to quantify PMPs. TG was determined by use of a fluorimetric assay. It was found that CLP increased Rac1 activity in platelets, which was abolished by administration of the Rac1 inhibitor NSC23766...
June 10, 2017: Biochemical and Biophysical Research Communications
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