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Journal of Thrombosis and Haemostasis: JTH

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https://www.readbyqxmd.com/read/28520199/economic-evaluation-of-strategies-for-restarting-anticoagulation-therapy-after-a-first-event-of-unprovoked-venous-thromboembolism
#1
M Monahan, J Ensor, D Moore, D Fitzmaurice, S Jowett
BACKGROUND: Following at least three months of anticoagulation therapy after a first unprovoked Venous Thromboembolism (VTE), there is uncertainty about the duration of therapy. Further anticoagulation therapy reduces the risk of having a potentially fatal recurrent VTE but at the expense of a higher risk of bleeding which can also be fatal. OBJECTIVE: An economic evaluation sought to estimate the long-term cost-effectiveness of using a decision rule for restarting anticoagulation therapy versus no extension of therapy in patients based on their risk of a further unprovoked VTE...
May 18, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28509344/cgmp-signalling-inhibits-platelet-shape-change-through-regulation-of-the-rhoa-rho-kinase-mlc-phosphatase-signalling-pathway
#2
Ahmed Aburima, Kochar Walladbegi, Jonathan D Wake, Khalid M Naseem
BACKGROUND: Platelet shape change, spreading and thrombus stability requires activation of the actin cytoskeleton contractile machinery. The mechanisms controlling actin assembly to prevent unwanted platelet activation are unclear. OBJECTIVES: We examined the effects of nitric oxide on the signalling pathways regulating platelet actin-myosin activation. RESULTS: S-nitrosoglutathione (GSNO) inhibited thrombin-induced platelet shape change and myosin phosphorylation of myosin light chain (MLC)...
May 16, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28509332/myeloid-but-not-epithelial-tissue-factor-exerts-protective-anti-inflammatory-properties-in-acid-aspiration-induced-acute-lung-injury
#3
J B Kral-Pointner, W C Schrottmaier, V Horvath, H Datler, L Hell, C Ay, B Niederreiter, B Jilma, J A Schmid, A Assinger, N Mackman, S Knapp, G Schabbauer
INTRODUCTION: Acute lung injury (ALI) is a life-threatening condition characterized by damaged alveolar-capillary structures and activation of inflammatory and hemostatic processes. Tissue factor (TF) represents a crucial link between inflammation and coagulation, as inflammatory mediators induce myeloid TF expression and TF initiates the extrinsic coagulation. OBJECTIVE: Since pulmonary inflammation stimulates TF expression and TF modulates immune responses, we aimed to elucidate its impact on ALI...
May 16, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28498619/race
#4
EDITORIAL
F R Rosendaal, P H Reitsma
No abstract text is available yet for this article.
May 12, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28498565/the-c-reactive-protein-gene-polymorphism-predicts-the-risk-of-thromboembolic-stroke-in-atrial-fibrillation-a-more-than-10-year-prospective-follow-up-study
#5
Sheng-Nan Chang, Ling-Ping Lai, Fu-Tien Chiang, Jiunn-Lee Lin, Juey-Jen Hwang, Chia-Ti Tsai
BACKGROUND: Little evidence is available regarding the impact of genetic polymorphisms on the risk of thromboembolic stroke in patients with atrial fibrillation (AF). An increasing body of evidence demonstrates that inflammatory responses play an important role in the pathophysiology of AF. OBJECTIVES: The purpose of this study was to investigate the effect of genetic polymorphisms of C-reactive protein (CRP) gene on the incidence of thromboembolic stroke in patients with AF...
May 12, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28493528/what-the-neighbors-say
#6
EDITORIAL
(no author information available yet)
No abstract text is available yet for this article.
May 11, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28457019/dynamics-of-von-willebrand-factor-reactivity-in-sickle-cell-disease-during-vaso-occlusive-crisis-and-steady-state
#7
Joep W R Sins, Marein Schimmel, Brenda M Luken, Erfan Nur, Sacha S Zeerleder, Charlotte F J van Tuijn, Dees P M Brandjes, Wil F Kopatz, Rolf T Urbanus, Joost C M Meijers, Bart J Biemond, Karin Fijnvandraat
BACKGROUND: Endothelial activation plays a central role in the pathophysiology of vaso-occlusion in sickle cell disease (SCD), facilitating adhesive interactions with circulating blood cells. Upon activation various adhesive molecules are expressed, including von Willebrand factor (VWF). Increased VWF levels have been observed in patients with SCD during steady state. However, the role of VWF in the pathogenesis of SCD vaso-occlusion is unclear. OBJECTIVES: To longitudinally assess quantity and reactivity of VWF and its regulating protease ADAMTS-13 during vaso-occlusive crisis (VOC)...
April 29, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28457015/pregnancy-outcome-after-a-first-episode-of-cerebral-vein-thrombosis-reply
#8
Ida Martinelli, Maria Abbattista, Edgardo Somigliana, Francesca Gianniello, Flora Peyvandi
We thank doctors Fan and Zhu for their comments and appreciation of our work. We do agree that the results of our study (1) cannot be generalized to all women who become pregnant after cerebral vein thrombosis, as our population is selected because we are a tertiary care center for patients referred for thrombophilia work-up and counselling on the secondary prevention of venous thromboembolism. This article is protected by copyright. All rights reserved.
April 29, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28457013/e-health-based-management-of-patients-receiving-oral-anticoagulation-therapy-results-from-the-observational-thrombeval-study
#9
Jürgen H Prochaska, Sebastian Göbel, Karsten Keller, Meike Coldewey, Alexander Ullmann, Heidrun Lamparter, Andreas Schulz, Helmut Schinzel, Christoph Bickel, Michael Lauterbach, Matthias Michal, Roland Hardt, Harald Binder, Christine Espinola-Klein, Karl J Lackner, Hugo Ten Cate, Thomas Münzel, Philipp S Wild
BACKGROUND: Management of oral anticoagulation (OAC) therapy is central to minimize adverse events in patients receiving vitamin K-antagonists (VKA). Data on the effect of e-health based anticoagulation management systems on clinical outcome of OAC patients are limited. OBJECTIVES: To compare the clinical outcome of OAC patients managed by an e-health based coagulation service (CS) to regular medical care (RMC). METHODS: The prospective multi-centre cohort study thrombEVAL (NCT01809015) comprised 1,558 individuals in RMC and 760 individuals in CS...
April 29, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28457011/diagnosis-of-inherited-platelet-disorders-on-a-blood-smear-a-tool-to-facilitate-worldwide-diagnosis-of-platelet-disorders
#10
Andreas Greinacher, Alessandro Pecci, Shinji Kunishima, Karina Althaus, Paquita Nurden, Carlo L Balduini, Tamam Bakchoul
BACKGROUND: Many hereditary thrombocytopenias and/or platelet function disorders have been identified, but diagnosis of these conditions remains challenging. Diagnostic laboratory techniques are available only in a few specialized centers and, using fresh blood, often require the patient to travel long distances. For the same reasons, patients living in developing countries usually have limited access to diagnosis. Further, the required amount of blood is often prohibitive for pediatric patients...
April 29, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28456997/pregnancy-outcome-after-a-first-episode-of-cerebral-vein-thrombosis-comment
#11
Heng Fan, Jian-Hua Zhu
We read with great interest the article by Martinelli I et al. [1] in which the authors report their attempt to evaluate the risk of obstetrical complications, recurrent venous thrombosis and bleeding in a cohort of pregnant women on low-molecular-weight heparin (LMWH) after a first episode of cerebral vein thrombosis (CVT). Furthermore, they also estimated the relative risk of obstetrical complications, patients with previous CVT were compared with a cohort of healthy women without thrombosis and with at least one pregnancy in their life...
April 29, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28453902/lighting-up-kinase-action-in-platelets
#12
Albert Smolenski
Platelet functions are highly regulated by signaling networks involving at least 300 protein kinases [2]. Platelets express members of the mitogen-activated protein kinase (MAPK) family including p42 ERK2 and, at lower concentrations, p44 ERK1. Both ERK isoforms are activated by agonists like von Willebrand factor, collagen, thrombin, ADP and thromboxane A2 [3-7]. ERK activation depends on MAPK kinase (MKK-1 or MEK) and involves Gq, Gi, phospholipase C and Src family kinase signaling [5, 8]. Active ERK has been shown to stimulate thromboxane A2 production [5] and to contribute to platelet aggregation [4, 9]...
April 28, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28453901/quasi-static-acoustic-tweezing-thromboelastometry
#13
R G Holt, D Luo, N Gruver, D B Khismatullin
BACKGROUND: Thromboelastography is widely used as a tool to assess the coagulation status of surgical patients. It allows observation of changes in material properties of whole blood, beginning with early stages of clot formation and ending with clot lysis. However, the contact activation of the coagulation cascade at surfaces of thromboelastographic systems leads to inherent variability and unreliability in predicting bleeding or thrombosis risks. OBJECTIVES: To develop acoustic tweezing thromboelastometry as a noncontact method for perioperative assessment of blood coagulation...
April 28, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28453889/discrepant-platelet-and-plasma-von-willebrand-factor-in-von-willebrand-disease-patients-with-p-pro2808leufs-24
#14
Mackenzie L Bowman, Fred G Pluthero, Angie Tuttle, Lara Casey, Ling Li, Hilary Christensen, K Sue Robinson, David Lillicrap, Walter H A Kahr, Paula James
BACKGROUND: A novel variant, p.Pro2808Leufs*24, in the von Willebrand factor (VWF) gene was previously identified in the Canadian von Willebrand disease (VWD) patient population. Clinical observations of type 3 VWD patients with this variant indicate a milder bleeding phenotype compared to other type 3 patients. OBJECTIVE: To assess the effect of the Pro2808Leufs*24 variant on the molecular pathogenesis of VWD and correlate with the phenotype observed in patients...
April 28, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28453888/live-imaging-of-extracellular-signal-regulated-kinase-and-protein-kinase-a-activities-during-thrombus-formation-in-mice-expressing-biosensors-based-on-f%C3%A3-rster-resonance-energy-transfer
#15
Takuya Hiratsuka, Takeshi Sano, Hisashi Kato, Naoki Komatsu, Masamichi Imajo, Yuji Kamioka, Kenta Sumiyama, Fumiaki Banno, Toshiyuki Miyata, Michiyuki Matsuda
BACKGROUND: Dynamic features of thrombus formation have been visualized by conventional video wide field microscopy or confocal microscopy in live mouse. However, due to technical limitations precise spatiotemporal regulation of intracellular signaling molecule activities, which have been extensively studied in vitro, remains elusive in vivo. OBJECTIVES: By two-photon excitation microscopy of transgenic mice expressing Förster resonance energy transfer (FRET) biosensors for extracellular signal-regulated kinase (ERK) and protein kinase A (PKA), we visualized ERK and PKA activities during thrombus formation in laser-injured subcutaneous arterioles RESULTS: When a core of densely packed platelets was developed, ERK activity was increased from the basal region close to the injured arterioles...
April 28, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28445600/caplacizumab-reduces-the-frequency-of-major-thromboembolic-events-exacerbations-and-death-in-patients-with-acquired-thrombotic-thrombocytopenic-purpura
#16
F Peyvandi, M Scully, J A Kremer Hovinga, P Knöbl, S Cataland, K De Beuf, F Callewaert, H De Winter, R K Zeldin
BACKGROUND: Acquired thrombotic thrombocytopenic purpura (aTTP) is a life-threatening autoimmune thrombotic microangiopathy. In spite of treatment with plasma exchange and immunosuppression, patients remain at risk for thrombotic complications, exacerbations and death. In the Phase II TITAN study, treatment with caplacizumab, an anti-vWF Nanobody(®) , was shown to reduce the time to confirmed platelet count normalization and exacerbations during treatment. OBJECTIVE: The clinical benefit of caplacizumab was further investigated in a post-hoc analysis of the incidence of major thromboembolic events and exacerbations during the study drug treatment period and TTP-related death during the study...
April 26, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28445598/dabigatran-enhances-platelet-reactivity-and-platelet-thrombin-receptor-expression-in-patients-with-atrial-fibrillation-reply
#17
Alina Achilles, Annemarie Mohring, Tobias Zeus, Malte Kelm, Amin Polzin
Firstly, we would like to thank Bonello et al. for their comment on our recent publication. We completely agree that until now, data were contradicting regarding the impact of dabigatran on platelet reactivity. Additionally, we completely agree that during the last year, different groups have clearly shown enhanced platelet aggregation and platelet adhesion in dabigatran treated patients. [1-3] Furthermore, two different mechanisms have been described (enhanced platelet adhesion to the endothelium mediated by GPIb-α by Petzold et al...
April 26, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28445597/taller-height-as-a-risk-factor-for-venous-thromboembolism-a-mendelian-randomization-meta-analysis
#18
N S Roetker, S M Armasu, J S Pankow, P L Lutsey, W Tang, M A Rosenberg, T M Palmer, R F MacLehose, S R Heckbert, M Cushman, M de Andrade, A R Folsom
BACKGROUND: Taller height is associated with greater risk of venous thromboembolism (VTE). OBJECTIVES: We used instrumental variable (IV) techniques (Mendelian randomization) to further explore this relationship METHODS: Participants of European ancestry were included from two cohort studies [Atherosclerosis Risk in Communities (ARIC) study and Cardiovascular Health Study (CHS)] and one case-control study [Mayo Clinic VTE Study (Mayo)]. We created two weighted genetic risk scores (GRS) for height; the full GRS included 668 single nucleotide polymorphisms (SNPs) from a previously published meta-analysis and the restricted GRS included a subset of 362 SNPs not associated with weight independently of height...
April 26, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28440069/occult-cancer-related-first-venous-thromboembolism-is-associated-with-an-increased-risk-of-recurrent-venous-thromboembolism
#19
Olga V Gran, Sigrid K Braekkan, Benedikte Paulsen, Hanne Skille, Frits R Rosendaal, John-Bjarne Hansen
BACKGROUND: Although venous thromboembolism (VTE) is associated with a high recurrence rate, the absolute recurrence rates in cancer-related VTE, particularly in occult cancer, are not well known. OBJECTIVES: We aimed to investigate the risk of VTE recurrence in patients with occult- and overt cancer-related VTE. METHODS: Incident VTE events among participants of the Tromsø 1-6 surveys occurring in the period 1994-2012 were included. Occult cancer was defined as cancer diagnosed within a year following a VTE, whereas overt cancer was defined as cancer diagnosed within the two years before a VTE...
April 25, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28440041/ultrasound-assisted-versus-conventional-catheter-directed-thrombolysis-for-acute-ilio-femoral-deep-vein-thrombosis-one-year-follow-up-data-of-a-randomized-controlled-trial
#20
Rolf P Engelberger, Anna Stuck, David Spirk, Torsten Willenberg, Axel Haine, Daniel Périard, Iris Baumgartner, Nils Kucher
BACKGROUND: In patients with acute ilio-femoral deep vein thrombosis (IFDVT), catheter-directed thrombolysis (CDT) aims to prevent the post-thrombotic syndrome (PTS). Adding intravascular high-frequency, low-power ultrasound energy to CDT does not seem to improve the immediate thrombolysis results but its impact on clinical outcomes at 12 months is not known. PATIENTS/METHODS: In this randomized-controlled trial, 48 patients (mean age 50±21 years, 52% women) with acute IFDVT were randomized to conventional CDT (n=24) or ultrasound-assisted CDT (USAT; n=24)...
April 25, 2017: Journal of Thrombosis and Haemostasis: JTH
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