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Antithrombotic therapy for prevention of thrombosis

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https://www.readbyqxmd.com/read/27892890/trial-design-rivaroxaban-for-the-prevention-of-major-cardiovascular-events-after-transcatheter-aortic-valve-replacement-rationale-and-design-of-the-galileo-study
#1
Stephan Windecker, Jan Tijssen, Gennaro Giustino, Ana H C Guimarães, Roxana Mehran, Marco Valgimigli, Pascal Vranckx, Robert C Welsh, Usman Baber, Gerrit-Anne van Es, Peter Wildgoose, Albert A Volkl, Ana Zazula, Karen Thomitzek, Melanie Hemmrich, George D Dangas
BACKGROUND: Optimal antithrombotic treatment after transcatheter aortic valve replacement (TAVR) is unknown and determined empirically. The direct factor Xa inhibitor rivaroxaban may potentially reduce TAVR-related thrombotic complications and premature valve failure. DESIGN: GALILEO is an international, randomized, open-label, event-driven, phase III trial in more than 1,520 patients without an indication for oral anticoagulation who underwent a successful TAVR (ClinicalTrials...
October 31, 2016: American Heart Journal
https://www.readbyqxmd.com/read/27886825/antiplatelet-and-antithrombotic-therapy-in-patients-with-atrial-fibrillation-undergoing-coronary-stenting
#2
REVIEW
Mikhail S Dzeshka, Richard A Brown, Davide Capodanno, Gregory Y H Lip
Stroke prevention is the main priority in the management cascade of atrial fibrillation. Most patients require long-term oral anticoagulation (OAC) and may require percutaneous coronary intervention. Prevention of recurrent cardiac ischemia and stent thrombosis necessitate dual antiplatelet therapy (DAPT) for up to 12 months. Triple antithrombotic therapy with OAC plus DAPT of shortest feasible duration is warranted, followed by dual antithrombotic therapy of OAC and antiplatelet agent, and OAC alone after 12 months...
January 2017: Interventional cardiology clinics
https://www.readbyqxmd.com/read/27875375/management-of-venous-thromboembolism-in-myeloproliferative-neoplasms
#3
Tiziano Barbui, Valerio De Stefano
PURPOSE OF REVIEW: Venous thromboembolism is frequent in chronic myeloproliferative neoplasms (MPN). The current strategy for its management includes cytoreductive therapy and antithrombotic prophylaxis, but many issues remain uncertain. In this review, the risk factors and prevention of recurrences will be discussed. RECENT FINDINGS: Around one-third of patients with polycythemia vera and essential thrombocythemia experience a major thrombosis at diagnosis or during follow-up...
November 21, 2016: Current Opinion in Hematology
https://www.readbyqxmd.com/read/27869893/-anmco-position-paper-recommendations-for-the-follow-up-of-patients-with-pulmonary-thromboembolism
#4
Carlo D'Agostino, Pietro Zonzin, Iolanda Enea, Michele Massimo Gulizia, Walter Ageno, Piergiuseppe Agostoni, Michele Azzarito, Cecilia Becattini, Amedeo Bongarzoni, Francesca Bux, Franco Casazza, Nicoletta Corrieri, Michele D'Alto, Nicola D'Amato, Andrea Maria D'Armini, Maria Grazia De Natale, Giovanni Di Minno, Giuseppe Favretto, Lucia Filippi, Valentina Grazioli, Gualtiero Palareti, Raffaele Pesavento, Loris Roncon, Laura Scelsi, Antonella Tufano
Venous thromboembolism (VTE), including deep venous thrombosis and pulmonary embolism, is the third most common cause of cardiovascular death. The management of the acute phase of VTE is well described in several papers and guidelines, whereas the management of the follow-up of the patients affected from VTE is less defined. This position paper of the Italian Association of Hospital Cardiologists (ANMCO) tries to fill the gap using currently available evidence and the opinion of the experts to suggest the most useful way to manage patients in the chronic phase...
September 2016: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/27856470/thrombosis-in-the-setting-of-obesity-or-inflammatory-bowel-disease
#5
REVIEW
Steven R Lentz
Obesity and inflammatory bowel disease (IBD) are systemic inflammatory disorders that predispose to arterial and venous thrombosis through similar prothrombotic mechanisms. Obesity and IBD are chronic risk factors that lead to a persistently elevated risk of thrombosis, although the thrombotic risk with IBD appears to wax and wane with disease severity. Because of the lack of high-quality evidence to guide management decisions, approaches to the prevention and treatment of thrombosis in patients with obesity or IBD are based on extrapolation from general guidelines for antithrombotic therapy...
November 17, 2016: Blood
https://www.readbyqxmd.com/read/27845573/structure-activity-relationship-studies-for-multitarget-antithrombotic-drugs
#6
Ana R Neves, Marta Correia-da-Silva, Emília Sousa, Madalena Pinto
Thrombosis is a complex process involving multiple pathways. Currently, therapy relies on the combination of two or more antithrombotic drugs, showing that inhibiting more than one target provides benefits in the prevention and treatment of thrombosis. This review focuses on structure-activity relationship studies of molecules possessing multiple actions against thrombosis, namely, dual inhibitors of coagulation, dual inhibitors of coagulation and platelet aggregation, and also dual inhibitors of platelet aggregation...
November 15, 2016: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/27766043/doacs-advances-and-limitations-in-real-world
#7
Lai Heng Lee
The group of new oral anticoagulants or NOACs, now termed direct oral anticoagulants or DOACs, with their favourable results from large scale phase III clinical trials, represent a major advancement and expanded armamentarium in antithrombotic therapy. Dabigatran, rivaroxaban, apixaban and edoxaban are now in clinical routine use for prevention and treatment of arterial and venous thrombotic diseases as addressed in their clinical trials. Usage of the DOACs is expected to increase as clinicians gain more experience and reassurance with data from the real world studies which are generally consistent with that from clinical trials...
2016: Thrombosis Journal
https://www.readbyqxmd.com/read/27760978/efficacy-and-safety-of-danshen-compound-tablets-in-preventing-thalidomide-associated-thromboembolism-in-patients-with-multiple-myeloma-a-multicenter-retrospective-study
#8
Qing-Song Yin, Lin Chen, Rui-Hua Mi, Hao Ai, Jun-Jie Yin, Xiao-Juan Liu, Xu-Dong Wei
BACKGROUND Currently available antithrombotic prophylaxis is not perfectly reliable in elderly patients. The aim of this retrospective study was to evaluate the efficacy and safety of Compound Danshen Tablet (CDT) in preventing thromboembolism in multiple myeloma (MM) patients treated with thalidomide-based regimens. MATERIAL AND METHODS MM patients treated with thalidomide-based regimens were retrospectively reviewed between January 2008 and March 2015. Patients were categorized into 3 cohorts based on thromboembolic prophylaxis used: CDT, Warfarin Tablet, and no prophylaxis...
October 20, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27759438/can-we-prevent-venous-thrombosis-with-statins-an-epidemiologic-review-into-mechanism-and-clinical-utility
#9
Willem M Lijfering, Joseph S Biedermann, Marieke J H A Kruip, Frank W G Leebeek, Frits R Rosendaal, Suzanne C Cannegieter
Statins may be causally associated with a decreased risk of venous thrombosis. If so, this could be a substantive breakthrough since statins do not increase the risk of bleeding and could therefore be used as a safer antithrombotic drug. However, scepticism exists on the observed reduction of venous thrombosis by statins, as it may have been confounded by healthy user effects or other biases. Areas covered: The main focus of this review will be the biases that may have arisen in clinical studies that investigated the relationship between statin use and risk of venous thrombosis...
October 19, 2016: Expert Review of Hematology
https://www.readbyqxmd.com/read/27623680/exploring-unmet-needs-in-venous-and-arterial-thromboembolism-with-rivaroxaban
#10
Riccardo Cappato, Robert Welsh
The vast clinical research programme for the direct, oral factor Xa inhibitor rivaroxaban has generated a wealth of data since the first rivaroxaban approval in 2008 for the prevention of venous thromboembolism (VTE) in patients undergoing elective hip or knee replacement surgery. While rivaroxaban is widely used across a spectrum of seven indications, there is continuous commitment to investigating its wider benefits in new indications and attempts to refine current evidence. Key data from recently completed randomised controlled trials (RCTs) have shown that rivaroxaban is a feasible anticoagulation option for patients with non-valvular atrial fibrillation (NVAF) undergoing cardioversion or catheter ablation...
September 28, 2016: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/27565018/design-and-rationale-of-the-re-dual-pci-trial-a-prospective-randomized-phase-3b-study-comparing-the-safety-and-efficacy-of-dual-antithrombotic-therapy-with-dabigatran-etexilate-versus-warfarin-triple-therapy-in-patients-with-nonvalvular-atrial-fibrillation
#11
Christopher P Cannon, Savion Gropper, Deepak L Bhatt, Stephen G Ellis, Takeshi Kimura, Gregory Y H Lip, Ph Gabriel Steg, Jurriën M Ten Berg, Jenny Manassie, Jörg Kreuzer, Jon Blatchford, Joseph M Massaro, Martina Brueckmann, Ernesto Ferreiros Ripoll, Jonas Oldgren, Stefan H Hohnloser
Antithrombotic management of patients with atrial fibrillation (AF) undergoing coronary stenting is complicated by the need for anticoagulant therapy for stroke prevention and dual antiplatelet therapy for prevention of stent thrombosis and coronary events. Triple antithrombotic therapy, typically comprising warfarin, aspirin, and clopidogrel, is associated with a high risk of bleeding. A modest-sized trial of oral anticoagulation with warfarin and clopidogrel without aspirin showed improvements in both bleeding and thrombotic events compared with triple therapy, but large trials are lacking...
October 2016: Clinical Cardiology
https://www.readbyqxmd.com/read/27511819/significant-improvement-of-antithrombotic-responses-to-clopidogrel-by-use-of-a-novel-conjugate-as-revealed-in-an-arterial-model-of-thrombosis
#12
Haoming Zhang, D Adam Lauver, Hui Wang, Duxin Sun, Paul F Hollenberg, Y Eugene Chen, Yoichi Osawa, Daniel T Eitzman
Clopidogrel is a prodrug that requires bioactivation by cytochrome P450 (P450) enzymes to a pharmacologically active metabolite for antiplatelet action. The clinical limitations of clopidogrel are in large part due to its poor pharmacokinetics resulting from inefficient bioactivation by P450s. In this study, we determined the pharmacokinetics and pharmacodynamics of a novel conjugate of clopidogrel, referred to as ClopNPT, in animal models and we evaluated its potential to overcome the limitations of clopidogrel...
October 2016: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/27476618/modulation-of-plasminogen-activator-inhibitor-1-pai-1-by-the-naphthoquinone-shikonin
#13
Tingting Han, Guangping Zhang, Dong Yan, Hong Yang, Tonghui Ma, Zuguang Ye
Plasminogen activator inhibitor-1 (PAI-1) is a key negative regulator of the fibrinolytic system. Elevated levels of PAI-1 are associated with thrombosis and cardiovascular and metabolic diseases. Inhibition of PAI-1 activity represents a new strategy for antithrombotic and antifibrinolysis therapies. In this study, we systematically investigated the inhibitory effect of shikonin on PAI-1 activity. In the chromogenic substrate-based urokinase (uPA)/PAI-1 assay, we found that shikonin inhibited human PAI-1 activity with IC50 values of 30...
September 2016: Fitoterapia
https://www.readbyqxmd.com/read/27384603/-st-segment-elevation-myocardial-infarction-in-a-patient-with-thrombophilia-taking-new-oral-anticoagulants
#14
Mauro Li Calzi, Angelo Placci, Daniela Lina, Francesca Grassi, Giorgia Paoli, Michele Bianconcini, Maria Alberta Cattabiani, Alberto Menozzi
We report the case of a 65--year-old woman admitted for inferior ST-segment elevation myocardial infarction complicated by complete atrioventricular block. The patient was under treatment with a novel oral anticoagulant (NOAC, rivaroxaban) because of a history of recurrent idiopathic pulmonary embolism. Emergency angiography showed complete acute thrombotic occlusion of the right coronary artery. After manual thrombectomy, there was no angiographic evidence of underlying atherosclerosis, therefore no further percutaneous coronary intervention was performed...
June 2016: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/27362653/cangrelor-for-the-management-and-prevention-of-arterial-thrombosis
#15
Robert F Storey, Akanksha Sinha
INTRODUCTION: Despite advances in antiplatelet therapy, the optimum antithrombotic regimen during percutaneous coronary intervention (PCI) remains to be determined. Cangrelor is an intravenous, reversibly-binding platelet P2Y12 receptor antagonist with ultra-rapid onset and offset of action that is approved in Europe and United States for use in patients undergoing PCI. This article describes the background for the development of cangrelor, the biology, pharmacology and clinical evidence supporting its use, and its likely position in the future...
September 2016: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/27362395/heparins-in-cancer-associated-venous-thrombosis
#16
Zbigniew Krasiński, Beata Krasińska, Łukasz Dzieciuchowicz, Tomasz Urbanek, Marcin Gabriel
A close causal relationship between cancer and venous thrombosis gives rise to questions about the effect of treatment modalities, in particular of the administered drugs, in patients with cancer-related venous thrombosis. An increased risk of chemotherapy-associated venous thromboembolism (VTE) has been well documented, while the effect of heparins used in VTE treatment on the disease course and prognosis in cancer patients has not been fully elucidated. This paper discusses the outcomes of the studies conducted so far investigating the role of heparins, in particular, low-molecular-weight heparins (LMWHs), in the prevention of thrombosis in cancer patients...
June 23, 2016: Polskie Archiwum Medycyny Wewnętrznej
https://www.readbyqxmd.com/read/27346176/bivariate-evaluation-of-thromboembolism-and-bleeding-in-clinical-trials-of-anticoagulants-in-patients-with-atrial-fibrillation
#17
John M Kittelson, Philippe Gabriel Steg, Jonathan L Halperin, Neil A Goldenberg, Sam Schulman, Alex C Spyropoulos, Craig M Kessler, Alexander G G Turpie, Neal R Cutler, William R Hiatt
Clinical trials of antithrombotic therapy require a cohesive assessment of benefit and risk. A new graphical method to represent the bivariate relation of benefit and risk in trials of antithrombotic drugs is described and illustrated using published data from the four major registration clinical trials of non-vitamin K oral anticoagulants (NOACs) totalling 71,683 patients for prevention of thromboembolic events (TE) in patients with atrial fibrillation (RE-LY, ROCKET AF, ARISTOTLE, and ENGAGE-AF TIMI48). A curve representing a null hypothesis defines a region of benefit on a two-dimensional plane...
August 30, 2016: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/27339429/selection-of-antithrombotic-therapy-in-patients-with-atrial-fibrillation-and-percutaneous-coronary-intervention
#18
Theodoros A Zografos, Demosthenes G Katritsis
BACKGROUND: In patients with coronary artery disease (CAD) undergoing percutaneous coronary intervention (PCI), dual antiplatelet therapy has been shown to effectively prevent stent thrombosis and other ischemic cardiovascular event. The frequent occurrence of atrial fibrillation (AF) and concomitant CAD in the same individuals, suggests that clinicians will encounter many patients treated with PCI who will require anticoagulant treatment for the prevention of the thromboembolic complications of AF...
June 22, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27265818/thromboprophylaxis-adherence-to-the-ninth-edition-of-american-college-of-chest-physicians-antithrombotic-guidelines-in-a-tertiary-care-centre-a-cross-sectional-study
#19
T Thériault, M Touchette, V Goupil, D Echenberg, L Lanthier
RATIONALE: Venous thromboembolic disease is a source of significant morbidity in hospitalized patients. The American College of Chest Physicians published the ninth edition of antithrombotic therapy and prevention guidelines (AT9) in 2012, addressing thromboprophylaxis in hospitalized patients. A notable difference from previous guidelines was utilization of risk assessment models for thrombosis and bleeding to classify patients into risk categories. AIM: This study's objective was to evaluate thromboprophylaxis adherence to AT9 guidelines in a population of patients at the Centre intégré universitaire de santé et de service sociaux de l'Estrie - Centre hospitalier universitaire de Sherbrooke...
December 2016: Journal of Evaluation in Clinical Practice
https://www.readbyqxmd.com/read/27255114/transcatheter-closure-of-pfo-as-secondary-prevention-of-cryptogenic-stroke
#20
R De Vecchis, C Baldi, S Cantatrione
This article covers the main unsolved issues regarding the potential role that the patent foramen ovale (PFO) plays in the genesis of so-called cryptogenic stroke. Some brief notions of the anatomy and epidemiology of the PFO are outlined. Subsequently, the results of the three trials on secondary prevention (medical therapy vs. transcatheter closure) in patients with PFO and a history of cryptogenic stroke are presented. The conflicting results of numerous meta-analyses derived from the three randomized controlled trials are discussed...
June 2, 2016: Herz
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