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Thrombosis and Haemostasis

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https://www.readbyqxmd.com/read/28906543/the-role-of-atrial-fibrillation-in-patients-with-an-embolic-stroke-of-unknown-source-esus
#1
Rolf Wachter, Ben Freedman
No abstract text is available yet for this article.
September 14, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28862285/accumulating-data-on-rivaroxaban-for-venous-thromboembolism-in-clinical-practice
#2
Sam Schulman
No abstract text is available yet for this article.
September 1, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28862284/detection-of-atrial-fibrillation-in-patients-with-embolic-stroke-of-undetermined-source-by-prolonged-monitoring-with-implantable-loop-recorders
#3
Carsten Israel, Alkisti Kitsiou, Malik Kalyani, Sameera Deelawar, Lucy Ekosso Ejangue, Andreas Rogalewski, Christoph Hagemeister, Jens Minnerup, Wolf-Rüdiger Schäbitz
Recently, the clinical entity embolic stroke of undetermined source (ESUS) has been defined for patients with ischemic strokes, where neither a cardioembolic nor a non-cardiac source can be detected. These patients may suffer from asymptomatic atrial fibrillation (AF), terminating spontaneously and thus eluding detection. Implantable loop recorders (ILR) with automatic AF detection algorithms can detect short-lasting, subclinical AF. The aim of this study was to prospectively assess and predict AF detection in patients with ESUS using ILR with daily remote interrogation...
September 1, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28837213/antithrombotic-potency-of-ticagrelor-versus-clopidogrel-in-type-2-diabetic-patients-with-cardiovascular-disease
#4
M Urooj Zafar, Usman Baber, Donald A Smith, Samantha Sartori, Johanna Contreras, Juan Rey-Mendoza, Carlos A Linares-Koloffon, Gines Escolar, Roxana Mehran, Valentin Fuster, Juan J Badimon
Type-2 Diabetes Mellitus [T2DM] is associated with increased platelet reactivity and hypo-response to antiplatelet drugs. Ticagrelor, with its faster and more potent antiplatelet effects, was shown to reduce adverse events more than clopidogrel in the overall CAD patient population of PLATO trial, but the benefits did not reach statistical significance in the T2DM subgroup. To better understand these findings, we compared the antithrombotic effects of ticagrelor versus with clopidogrel in T2DM patients with cardiovascular disease...
August 24, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28837210/derivation-and-validation-of-a-novel-bleeding-risk-score-for-elderly-patients-with-venous-thromboembolism-on-extended-anticoagulation
#5
Eva Seiler, Andreas Limacher, Marie Mean, Hans-Jürg Beer, Joseph Osterwalder, Beat Frauchiger, Marc Righini, Markus Aschwanden, Christian M Matter, Martin Banyai, Nils Kucher, Daniel Staub, Bernhard Lämmle, Nicolas Rodondi, Alessandro Squizzato, Drahomir Aujesky
Existing clinical scores do not perform well in predicting bleeding in elderly patients with acute venous thromboembolism (VTE). We sought to derive an easy-to-use clinical score to help physicians identify elderly patients with VTE who are at high-risk of bleeding during extended anticoagulation (>3 months). Our derivation sample included 743 patients aged ≥65 years with VTE who were enrolled in a prospective multicenter cohort study. All patients received extended anticoagulation with vitamin K antagonists...
August 24, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28837208/platelet-count-recovery-and-seroreversion-in-immune-hit-despite-continuation-of-heparin-further-observations-and-literature-review
#6
Andrew W Shih, Jo-Ann I Sheppard, Theodore E Warkentin
One of the standard distinctions between type 1 (non-immune) and type 2 (immune-mediated) heparin-induced thrombocytopenia (HIT) is the transience of thrombocytopenia: type 1 HIT is viewed as early-onset and transient thrombocytopenia, with platelet count recovery despite continuing heparin administration. In contrast, type 2 HIT is viewed as later-onset (i. e., 5 days or later) thrombocytopenia in which it is generally believed that platelet count recovery will not occur unless heparin is discontinued. However, older reports of type 2 HIT sometimes did include the unexpected observation that platelet counts could recover despite continued heparin administration, although without information provided regarding changes in HIT antibody levels in association with platelet count recovery...
August 24, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28837207/apixaban-and-dalteparin-in-active-malignancy-associated-venous-thromboembolism-the-adam-vte-trial
#7
Robert D McBane, Charles L Loprinzi, Aneel Ashrani, Juliana Perez-Botero, Roberto A Leon Ferre, Stanislav Henkin, Charles J Lenz, Jennifer G Le-Rademacher, Waldemar E Wysokinski
Currently, low molecular weight heparin (LMWH) is the guideline endorsed treatment of patients with cancer associated venous thromboembolism (VTE). While apixaban is approved for the treatment of acute VTE, there are limited data supporting its use in cancer patients. The rationale and design of this investigator initiated Phase IV, multicenter, randomized, open label, superiority trial assessing the safety of apixaban versus dalteparin for cancer associated VTE is provided (ADAM-VTE; NCT02585713). The main aim of the ADAM-VTE trial is to test the hypothesis that apixaban is associated with a significantly lower rate of major bleeding compared to dalteparin in the treatment of cancer patients with acute VTE...
August 24, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28816342/hypofibrinogenaemia-associated-with-novel-a%C3%AE-126val%C3%A2-asp-mutation-in-the-fibrinogen-coiled-coil
#8
Stephen O Brennan, Stephen Brennan, Andrew D Laurie
No abstract text is available yet for this article.
August 17, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28816341/clinical-impact-of-major-bleeding-in-patients-with-venous-thromboembolism-treated-with-factor-xa-inhibitors-or-vitamin-k-antagonists-an-individual-patient-data-meta-analysis
#9
Suzanne M Bleker, Marjolein P A Brekelmans, Elise S Eerenberg, Alexander T Cohen, Saskia Middeldorp, Gary Raskob, Harry R Büller
Factor Xa (fXa)-inhibitors are as effective and safer than vitamin-K-antagonists (VKA) in the treatment of venous thromboembolism (VTE). We previously classified the severity of clinical presentation and course of all major bleeding events from the EINSTEIN, AMPLIFY and HOKUSAI-VTE trials separately. The current aim was to combine these findings in order to increase precision, assess a class effect and analyse presentation and course for different types of bleeding, i. e. intracranial, gastro-intestinal, and other...
August 17, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28816340/coagulation-factor-xii-regulates-inflammatory-responses-in-human-lungs
#10
Rosanna Hess, Lukasz Wujak, Christina Hesse, Katherina Sewald, Danny Jonigk, Gregor Warnecke, Hans-Gerd Fieguth, Steven de Maat, Coen Maas, Francesco Bonella, Klaus T Preissner, Benjamin Weiss, Liliana Schaefer, Wolfgang M Kuebler, Philipp Markart, Malgorzata Wygrecka
Increased procoagulant activity in the alveolar compartment and uncontrolled inflammation are hallmarks of the acute respiratory distress syndrome (ARDS). Here, we investigated whether the contact phase system of coagulation is activated and may regulate inflammatory responses in human lungs. Components of the contact phase system were characterized in bronchoalveolar lavage fluids (BALF) from 54 ARDS patients and 43 controls, and their impact on cytokine/chemokine expression in human precision cut lung slices (PCLS) was assessed by a PCR array...
August 17, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28799620/long-term-bleeding-risk-prediction-in-real-world-patients-with-atrial-fibrillation-comparison-of-the-has-bled-and-abc-bleeding-risk-scores-the-murcia-atrial-fibrillation-project
#11
María Asunción Esteve-Pastor, José Miguel Rivera-Caravaca, Vanessa Roldan, Vicente Vicente, Mariano Valdés, Francisco Marín, Gregory Y H Lip
Risk scores in patients with atrial fibrillation (AF) based on clinical factors alone generally have only modest predictive value for predicting high risk patients that sustain events. Biomarkers might be an attractive prognostic tool to improve bleeding risk prediction. The new ABC-Bleeding score performed better than HAS-BLED score in a clinical trial cohort but has not been externally validated. It was the aim of this study to compare the predictive performance of the ABC-Bleeding score compared to HAS-BLED score in an independent "real-world" anticoagulated AF patients with long-term follow-up...
August 11, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28796275/immature-platelets-as-a-novel-biomarker-for-adverse-cardiovascular-events-in-patients-after-non-cardiac-surgery
#12
Aida Anetsberger, Manfred Blobner, Bernhard Haller, Sebastian Schmid, Katrin Umgelter, Theresa Hager, Clemens Langgartner, Eberhard F Kochs, Karl-Ludwig Laugwitz, Bettina Jungwirth, Isabell Bernlochner
This study evaluates whether immature platelets (IPF) determined in the post anesthesia care unit (PACU) can predict major adverse cardiovascular events (MACE) or other thromboembolic events after intermediate and high-risk surgery. IPF are increased in patients with acute coronary syndrome and recently gained interest as novel biomarker for risk stratification. In this prospective observational trial 732 patients undergoing intermediate or high-risk non-cardiac surgery were enrolled (NCT02097602). IPF was measured preoperatively and postoperatively in the PACU...
August 10, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28796274/endothelial-cell-specific-overexpression-of-developmental-endothelial-locus-1-does-not-influence-atherosclerosis-development-in-apoe-mice
#13
Pallavi Subramanian, Marta Prucnal, Bettina Gercken, Matina Economopoulou, George Hajishengallis, Triantafyllos Chavakis
No abstract text is available yet for this article.
August 10, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28796273/role-of-replacement-therapy-in-the-evaluation-of-thrombosis-occurring-in-congenital-bleeding-conditions
#14
Antonio Girolami, Silvia Ferrari, Elisabetta Cosi, Bruno Girolami
No abstract text is available yet for this article.
August 10, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28771280/comparison-of-clinical-probability-adjusted-d-dimer-and-age-adjusted-d-dimer-interpretation-to-exclude-venous-thromboembolism
#15
Sarah Takach Lapner, Jim A Julian, Lori-Ann Linkins, Shannon Bates, Clive Kearon
Two new strategies for interpreting D-dimer results have been proposed: i) using a progressively higher D-dimer threshold with increasing age (age-adjusted strategy) and ii) using a D-dimer threshold in patients with low clinical probability that is twice the threshold used in patients with moderate clinical probability (clinical probability-adjusted strategy). Our objective was to compare the diagnostic accuracy of age-adjusted and clinical probability-adjusted D-dimer interpretation in patients with a low or moderate clinical probability of venous thromboembolism (VTE)...
August 3, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28771279/superoxide-dismutase-2-is-dispensable-for-platelet-function
#16
Trevor P Fidler, Jesse W Rowley, Claudia Araujo, Luc H Boudreau, Alex Marti, Rhonda Souvenir, Kali Dale, Eric Boilard, Andrew S Weyrich, E Dale Abel
Increased intracellular reactive oxygen species (ROS) promote platelet activation. The sources of platelet-derived ROS are diverse and whether or not mitochondrial derived ROS, modulates platelet function is incompletely understood. Studies of platelets from patients with sickle cell disease, and diabetes suggest a correlation between mitochondrial ROS and platelet dysfunction. Therefore, we generated mice with a platelet specific knockout of superoxide dismutase 2 (SOD2-KO) to determine if increased mitochondrial ROS increases platelet activation...
August 3, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28771278/co-injection-of-mesenchymal-stem-cells-with-endothelial-progenitor-cells-accelerates-muscle-recovery-in-hind-limb-ischemia-through-an-endoglin-dependent-mechanism
#17
Elisa Rossi, David Smadja, Celine Goyard, Audrey Cras, Blandine Dizier, Nour Bacha, Anna Lokajczyk, Coralie L Guerin, Nicolas Gendron, Benjamin Planquette, Virginie Mignon, Carmelo Bernabéu, Olivier Sanchez, David M Smadja
Endothelial colony-forming cells (ECFCs) are progenitor cells committed to endothelial lineages and have robust vasculogenic properties. Mesenchymal stem cells (MSCs) have been described to support ECFC-mediated angiogenic processes in various matrices. However, MSC-ECFC interactions in hind limb ischemia (HLI) are largely unknown. Here we examined whether co-administration of ECFCs and MSCs bolsters vasculogenic activity in nude mice with HLI. In addition, as we have previously shown that endoglin is a key adhesion molecule, we evaluated its involvement in ECFC/MSC interaction...
August 3, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28771276/downregulation-of-hypoxia-inducible-factor-1%C3%AE-contributes-to-impaired-megakaryopoiesis-in-immune-thrombocytopenia
#18
Jiaqian Qi, Tao You, Tingting Pan, Qi Wang, Li Zhu, Yue Han
Impaired megakaryocyte maturation and exaggerated platelet destruction play a pivotal role in the pathogenesis of immune thrombocytopenia (ITP). Previous studies have shown that HIF-1α promotes the homing and engraftment of haematopoietic stem cells (HSCs), thereby stimulating HSC differentiation. However, whether HIF-1α plays a role in megakaryocytic maturation and platelet destruction in ITP remains elusive. Using enzyme-linked immunosorbent assays (ELISAs), we demonstrated that there were lower HIF-1α levels in the bone marrow (BM) of ITP patients than in that of healthy donors and patients with chemotherapy-related thrombocytopenia...
August 3, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28837209/erythrocyte-heme-proteins-and-stemi-implications-in-prognosis
#19
Judit Cubedo, Rosa Suades, Teresa Padro, Victoria Martin-Yuste, Manel Sabate-Tenas, Juan Cinca, Jordi Sans-Rosello, Alessandro Sionis, Lina Badimon
The role of erythrocytes in thrombus formation has been often neglected, but some studies have highlighted their active role in thrombotic events. Free-haemoglobin (Hb) has shown to induce oxidative-stress damage. Herein we have investigated the coordinated changes in heme-related proteins in patients with acute-coronary-syndromes (ACS), their association to ongoing thrombosis and their impact on patients' prognosis. The serum proteome of STEMI-patients (N=27) within the first 6h after event-onset and 3d after were compared to controls (N=60)...
July 27, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28837206/neutrophil-extracellular-traps-are-increased-in-patients-with-acute-ischemic-stroke-prognostic-significance
#20
Juana Vallés, Aída Lago, María Teresa Santos, Ana María Latorre, Jose Tembl, Juan B Salom, Candela Nieves, Antonio Moscardó
Neutrophil extracellular traps (NETs) are networks of DNA, histones, and proteolytic enzymes produced by activated neutrophils through different mechanisms. NET formation is promoted by activated platelets and can in turn activate platelets, thus favoring thrombotic processes. NETs have been detected in venous and arterial thrombosis, but data in stroke are scarce. The aim of this study was to evaluate NETs in the plasma of patients with acute ischemic stroke and their potential association with baseline clinical characteristics, stroke severity, and one-year clinical outcomes...
July 27, 2017: Thrombosis and Haemostasis
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