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https://www.readbyqxmd.com/read/28219222/-relative-analysis-of-platelet-activation-with-bleeding-risk-in-patients-with-primary-immune-thrombocytopenia
#1
M E Lyu, Y Li, C C Lyu, W J Liu, Y Guan, S X Wang, R C Yang
Objective: To study the relationship between platelet activation and the degree of bleeding in patients with primary immune thrombocytopenia (ITP) . Methods: 43 patients with ITP were assessed based on ITP-BAT bleeding grading system. Platelet membrane glycoproteins (GP) Ⅰb, GPⅡb/Ⅲa and P-selectin expression were detected by flow cytometry analysis with and without adenosine diphosphate (ADP) stimulation. Association of platelet activation with platelet count, immature platelet fraction (IPF) , bleeding severity were evaluated...
January 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28214869/effects-of-antimalarial-tafenoquine-on-blood-platelet-activity-and-survival
#2
Hang Cao, Rosi Bissinger, Anja T Umbach, Abdulla Al Mamun Bhuyan, Florian Lang, Meinrad Gawaz
BACKGROUND/AIMS: The 8-aminoquinoline tafenoquine has been shown to be effective against Plasmodia, Leishmania and Trypanosoma. The substance is at least in part effective by triggering apoptosis of the parasites. Moreover, tafenoquine has been shown to trigger eryptosis, the suicidal erythrocyte death characterized by cell shrinkage and cell membrane scrambling with phosphatidylserine translocation to the erythrocyte surface. The effect of tafenoquine on eryptosis is in part due to stimulation of Ca2+ entry and oxidative stress...
January 26, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214521/neuroprotective-effect-of-salvianolic-acid-b-against-cerebral-ischemic-injury-in-rats-via-the-cd40-nf-%C3%AE%C2%BAb-pathway-associated-with-suppression-of-platelets-activation-and-neuroinflammation
#3
Shixin Xu, Aiqin Zhong, Huining Ma, Dan Li, Yue Hu, Yingzhi Xu, Junping Zhang
Neuroinflammation plays a critical role in the pathogenesis of ischemia/reperfusion (I/R) injury. Activated platelets are increasingly regarded as initiators and/or amplifiers of inflammatory processes in cerebral I/R injury. Salvianolic acid B (SAB) is the most abundant bioactive compound of Salviae miltiorrhizae, a well-known Chinese herb used to promote blood circulation and eliminating blood stasis. S. miltiorrhizae has been used clinically in Asia for the treatment of ischemic cerebrovascular diseases...
February 15, 2017: Brain Research
https://www.readbyqxmd.com/read/28211570/platelet-phagocytosis-by-granulopoietic-precursors-in-a-myelodysplastic-syndrome-overexpressing-the-p-selectin-gene
#4
Rosario M Morales-Camacho, M Dolores Serrano-Chacón, Concepción Prats-Martín, M Teresa Vargas, Ricardo Bernal, Sergio Burillo-Sanz
No abstract text is available yet for this article.
February 17, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28210898/flow-cytometric-analysis-reveals-the-high-levels-of-platelet-activation-parameters-in-circulation-of-multiple-sclerosis-patients
#5
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/28209945/effects-of-static-cold-storage-and-hypothermic-machine-perfusion-on-oxidative-stress-factors-adhesion-molecules-and-zinc-finger-transcription-factor-proteins-before-and-after-liver-transplantation
#6
De-Fang Zhao, Qin Dong, Tong Zhang
BACKGROUND This study aimed to investigate the effects of static cold storage (SCS) and hypothermic machine perfusion (HMP) on the oxidative stress factors (OSF), adhesion molecules (AM), and zinc finger transcription factor (Snail) before and after liver transplantation. MATERIAL AND METHODS Experimental dogs were randomly divided into donor (group A), SCS (group B), and HMP (group C) (n=30) groups. Livers retrieved from group A were transplanted into group B after SCS, and the livers sampled from group B were transplanted into group C after HMP...
February 17, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28208125/mean-platelet-volume-in-heterozygous-beta-thalassaemia
#7
Mehmet Ali Cikrikcioglu, Kenan Celik, Iskender Ekinci, Muharrem Nasifov, Aybala Erek Toprak, Guven Cetin, Sema Genc
BACKGROUND/AIM: It is not known why cerebrovascular and cardiovascular ischaemic events are less frequently observed in heterozygous beta thalassaemia (HBT) patients than in the general population. However, we previously reported that serum levels of some platelet function markers, i.e. soluble CD40 ligand and soluble P-selectin, are lower in patients with HBT than in controls. A high mean platelet volume (MPV) is an indicator of in vivo platelet activation and may indicate a tendency to thrombosis...
February 17, 2017: Acta Haematologica
https://www.readbyqxmd.com/read/28207883/application-of-an-optimized-flow-cytometry-based-quantification-of-platelet-activation-pact-monitoring-platelet-activation-in-platelet-concentrates
#8
Cécile H Kicken, Mark Roest, Yvonne M C Henskens, Bas de Laat, Dana Huskens
BACKGROUND: Previous studies have shown that flow cytometry is a reliable test to quantify platelet function in stored platelet concentrates (PC). It is thought that flow cytometry is laborious and hence expensive. We have optimized the flow cytometry-based quantification of agonist induced platelet activation (PACT) to a labor, time and more cost-efficient test. Currently the quality of PCs is only monitored by visual inspection, because available assays are unreliable or too laborious for use in a clinical transfusion laboratory...
2017: PloS One
https://www.readbyqxmd.com/read/28202840/soluble-vascular-cell-adhesion-molecules-may-be-protective-of-future-cardiovascular-disease-risk-findings-from-the-prevend-prospective-cohort-study
#9
Setor K Kunutsor, Stephan J L Bakker, Robin P F Dullaart
AIM: Soluble cell adhesion molecules, such as vascular cell adhesion molecule-1 (VCAM-1), intercellular adhesion molecule-1, E-selectin, and P-selectin, have been suggested to be associated with cardiovascular disease (CVD) risk; however, the nature and magnitude of the association between VCAM-1 and CVD risk is uncertain. We aimed to assess the association of VCAM-1 with CVD risk and determine its potential utility for CVD risk prediction. METHODS: VCAM-1 concentrations were measured at baseline in the PREVEND prospective study of 2,638 participants...
February 16, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28202126/-effect-of-ulinastatin-on-serum-levels-of-tumor-necrosis-factor-%C3%AE-p-selectin-and-thrombin-antithrombin-complex-in-young-rats-with-sepsis
#10
Yun Liu, Xing-Heng Wu
OBJECTIVE: To investigate the effect of ulinastatin (UTI) for early drug intervention on the serum levels of tumor necrosis factor-α (TNF-α), P-selectin, and thrombin-antithrombin complex (TAT) in young rats with sepsis. METHODS: A total of 120 male rats aged 4 weeks were randomly divided into normal control group, sham-operation group, sepsis group, low-dose UTI group (50 000 U/kg), and high-dose UTI group (200 000 U/kg), with 24 rats in each group. Modified cecal ligation and puncture was performed to establish a rat model of sepsis, and the rats in the low- and high-dose UTI groups were given caudal vein injection of UTI after model establishment...
February 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28195515/targeting-cell-adhesion-molecules-with-nanoparticles-using-in%C3%A2-vivo-and-flow-based-in%C3%A2-vitro-models-of-atherosclerosis
#11
Khosrow Khodabandehlou, Jacqueline J Masehi-Lano, Christopher Poon, Jonathan Wang, Eun Ji Chung
Atherosclerosis is a leading cause of death worldwide; in addition to lipid dysfunction, chronic arterial wall inflammation is a key component of atherosclerosis. Techniques that target cell adhesion molecules, which are overexpressed during inflammation, are effective methods to detect and treat atherosclerosis. Specifically, research groups have identified vascular cell adhesion molecule-1, intercellular adhesion molecule-1, platelet endothelial cell adhesion molecule, and selectins (E-selectin and P-selectin) as correlated to atherogenesis...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28194032/tumour-specific-pi3k-inhibition-via-nanoparticle-targeted-delivery-in-head-and-neck-squamous-cell-carcinoma
#12
Aviram Mizrachi, Yosi Shamay, Janki Shah, Samuel Brook, Joanne Soong, Vinagolu K Rajasekhar, John L Humm, John H Healey, Simon N Powell, José Baselga, Daniel A Heller, Adriana Haimovitz-Friedman, Maurizio Scaltriti
Alterations in PIK3CA, the gene encoding the p110α subunit of phosphatidylinositol 3-kinase (PI3Kα), are frequent in head and neck squamous cell carcinomas. Inhibitors of PI3Kα show promising activity in various cancer types, but their use is curtailed by dose-limiting side effects such as hyperglycaemia. In the present study, we explore the efficacy, specificity and safety of the targeted delivery of BYL719, a PI3Kα inhibitor currently in clinical development in solid tumours. By encapsulating BYL719 into P-selectin-targeted nanoparticles, we achieve specific accumulation of BYL719 in the tumour milieu...
February 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/28190975/reduced-platelet-hyper-reactivity-and-platelet-leukocyte-aggregation-after-periodontal-therapy
#13
Efthymios Arvanitidis, Sergio Bizzarro, Elena Alvarez Rodriguez, Bruno G Loos, Elena A Nicu
BACKGROUND: Platelets from untreated periodontitis patients are hyper-reactive and form more platelet-leukocyte complexes compared to cells from individuals without periodontitis. It is not known whether the improvement of the periodontal condition achievable by therapy has beneficial effects on the platelet function. We aimed to assess the effects of periodontal therapy on platelet reactivity. METHODS: Patients with periodontitis (n = 25) but unaffected by any other medical condition or medication were included and donated blood before and after periodontal therapy...
2017: Thrombosis Journal
https://www.readbyqxmd.com/read/28185978/long-term-serial-changes-in-platelet-activation-indices-following-sirolimus-eluting-and-bare-metal-stents-implantation-in-patients-with-stable-coronary-artery-disease
#14
Maria Marketou, George E Kochiadakis, Aikaterini Giaouzaki, Katerini Sfiridaki, Stelios Petousis, Fragiskos Maragoudakis, Konstantinos Roufas, Despoina Vougia, John Logakis, Gregory Chlouverakis, Panos E Vardas
BACKGROUND: Platelet activation is crucial in the development of stent thrombosis following percutaneous coronary intervention (PCI). We carried out a long-term assessment of multiple factors implicated in the thrombotic process and markers of platelet activation, after implantation of sirolimus-eluting stents (SES) in patients with stable coronary artery disease (CAD), and we compared the results with those after bare-metal stent (BMS) implantation. METHODS: Forty-seven consecutive patients, aged <70 years, with severe stenosis (>70% narrowing of the lumen) of one major epicardial coronary artery and stable CAD, underwent successful elective PCI and were randomly allocated to SES (n=25) or BMS (n=22)...
February 6, 2017: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
https://www.readbyqxmd.com/read/28185008/physical-activity-initiated-by-employer-induces-improvements-in-a-novel-set-of-biomarkers-of-inflammation-an-8-week-follow-up-study
#15
Lars-Kristian Lunde, Øivind Skare, Hans C D Aass, Asgeir Mamen, Elín Einarsdóttir, Bente Ulvestad, Marit Skogstad
PURPOSE: We investigated the level of pro- and anti-inflammatory biomarkers before and after 8 weeks of unsupervised physical activity (PA) initiated by employer. METHODS: During autumn 2014, background data, blood samples and self-reported exercise level were collected from 76 men and 41 women in a Norwegian road maintenance company. Monocyte chemoattractant protein-1 (MCP-1), tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), leptin, adiponectin, p-selectin and CD40 ligand (CD40L) were analyzed...
February 9, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28183821/exercise-induced-upregulation-of-endothelial-adhesion-molecules-in-human-skeletal-muscle-and-number-of-circulating-cells-with-remodeling-properties
#16
Anna Strömberg, Eric Rullman, Eva Jansson, Thomas Gustafsson
Multipotent cells have received great interest due to their potential capacity to repair and remodel peripheral tissues. We examined the effect of an acute exercise bout on the number of circulating cells with known remodeling properties, and the level of factors in plasma and skeletal muscle tissue with potential to recruit these cells. Twenty healthy male subjects performed a 60 min cycling exercise. Blood samples for flow cytometry were drawn from 10 subjects (Group 1) before and up to 2 h after exercise, and absolute cell counts of the classical (CD14(++)CD16(-)), intermediate (CD14(++)CD16(+)), and nonclassical (CD14(+)CD16(++)) monocyte (MO) subpopulations, and of CD45(dim)CD34(+)VEGFR2(+) endothelial progenitor cells (EPCs) were measured using bead-based determination...
February 9, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28178038/p-selectin-glycoprotein-ligand-1-in-t-cells
#17
Michael Abadier, Klaus Ley
PURPOSE OF REVIEW: We review P-selectin glycoprotein ligand-1 (PSGL-1) as a selectin and chemokine-binding adhesion molecule. PSGL-1 is widely studied in neutrophils. Here, we focus on T cells, because PSGL-1 was recently described as a major immunomodulatory molecule during viral infection. PSGL-1 also plays a crucial role in T-cell homeostasis by binding to lymphoid chemokines, and can induce tolerance by enhancing the functions of regulatory T cells. RECENT FINDINGS: PSGL-1 was originally described as a leukocyte ligand for P-selectin, but it is actually a ligand for all selectins (P-, L- and E-selectin), binds chemokines, activates integrins and profoundly affects T-cell biology...
February 7, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28176928/n-3-hydroxymethyl-%C3%AE-carboline-1-yl-ethyl-2-yl-l-phe-development-toward-a-nanoscaled-antitumor-drug-capable-of-treating-complicated-thrombosis-and-inflammation
#18
Jianhui Wu, Ming Zhao, Yuji Wang, Yaonan Wang, Haimei Zhu, Shurui Zhao, Lin Gui, Xiaoyi Zhang, Shiqi Peng
It is well documented that the surfaces of cancer cells, activated platelets and inflammatory cells are rich in P-selectin. N-(3-hydroxymethyl-β-carboline-1-yl-ethyl-2-yl)-l-Phe (HMCEF) is a P-selectin inhibitor capable of simultaneously inhibiting thrombosis and inflammation. Based on the knowledge that P-selectin is a common target for antithrombotic, anti-inflammatory and antitumor drugs, the aim of this study article was to estimate the possibility of HMCEF as a nanoscaled antitumor drug. Images of transmission electron micro scopy, scanning electron microscopy and atomic force microscopy proved that HMCEF forms nanoparticles with a diameter of <120 nm that promote delivery in blood circulation...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28167447/associations-between-ambient-wood-smoke-and-other-particulate-pollutants-and-biomarkers-of-systemic-inflammation-coagulation-and-thrombosis-in-cardiac-patients
#19
Daniel P Croft, Scott J Cameron, Craig N Morrell, Charles J Lowenstein, Frederick Ling, Wojciech Zareba, Philip K Hopke, Mark J Utell, Sally W Thurston, Kelly Thevenet-Morrison, Kristin A Evans, David Chalupa, David Q Rich
BACKGROUND: Increased particulate air pollution has been associated with both an increased risk of myocardial infarction (MI) and adverse changes in cardiac biomarkers. Up to 30% of ambient wintertime fine particles (PM2.5) in Rochester, NY are from wood burning. Our study examined associations between ambient levels of a marker of wood smoke (Delta-C) and other particulate air pollutants and biomarkers of inflammation, coagulation and thrombosis. METHODS: We measured blood concentrations of C-reactive protein (CRP), D-dimer, fibrinogen, P-selectin, platelet factor 4 (PF-4), von Willebrand factor (vWF), and myeloperoxidase (MPO) of 135 patients undergoing cardiac catheterization during the winters of 2011-2013...
February 3, 2017: Environmental Research
https://www.readbyqxmd.com/read/28159803/tripartite-motif-containing-28-bridges-endothelial-inflammation-and-angiogenic-activity-by-retaining-expression-of-tnfr-1-and-2-and-vegfr2-in-endothelial-cells
#20
Yinfang Wang, Jinping Li, Yitong Huang, Xiuqin Dai, Youbin Liu, Zongjun Liu, Ying Wang, Nanping Wang, Peng Zhang
Angiogenesis and inflammation are regarded as important factors in the pathogenesis of chronic inflammation, cancer, and wound healing. Recent studies have supported prior evidence that common signaling pathways are involved in angiogenesis and inflammatory responses; however, key factors controlling both processes remain unclear. Although tripartite motif-containing (TRIM)-28 is known to have an immunosuppressive role in immune cells, its expression level and role in endothelial cells (ECs) are still unclear...
February 3, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
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