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Antithrombotic

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https://www.readbyqxmd.com/read/29240058/-venous-thromboembolic-complications-in-patients-with-cardiovascular-implantable-electronic-devices
#1
R E Kalinin, I A Suchkov, I I Shitov, N D Mzhavanadze, V O Povarov
The problem of venous thromboembolic complications (VTECs) in patients with cardiovascular implantable electronic devices (CIEDs) is extremely important today because of an annually increasing number of surgical interventions for life-threatening arrhythmias and chronic heart failure. There are hitherto no clearly defined reliable risk factors for VTECs due to heterogeneity of the available literature data. Some sources point to elevated thrombus formation in patients with a large number of electrodes, in repeat operative interventions, in the presence of a temporary pacemaker, in implantation on the left side, silicon cover of an electrode, others refute these facts...
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/29240050/-antithrombotic-therapy-after-bypass-grafting-below-the-inguinal-ligament
#2
Iu I Kazakov, I B Lukin, D V Zhuk, N Iu Sokolova
The importance of antithrombotic therapy following reconstructive operations on arteries below the inguinal ligament is beyond question. The pharmaceutical market offers a wide variety of antiaggregant and anticoagulant agents, with many studies (including randomised and multicenter ones) performed worldwide on the problem of choosing optimal antithrombotic therapy in the postoperative period after arterial reconstructions. Nevertheless, the problem of selecting adequate antithrombotic therapy after shunting operations remains undetermined...
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/29236148/dual-antiplatelet-therapy-after-percutaneous-coronary-intervention-for-stable-cad-or-acs-redefining-the-optimal-duration-of%C3%A2-treatment
#3
B E Stähli, U Landmesser
The duration and combination of dual antiplatelet therapy after coronary stent implantation, consisting of aspirin and a P2Y12 inhibitor, is among the most intensely investigated therapeutic strategies in cardiovascular medicine. While initial studies have mainly focused on the efficacy and safety of individual antithrombotic agents, the increased need for a personalized, risk-based approach to define the optimal duration of antithrombotic treatment according to the estimated ischemic and bleeding risk was then recognized...
December 13, 2017: Herz
https://www.readbyqxmd.com/read/29234445/bioactivity-guided-fractionation-of-the-traditional-chinese-medicine-resina-draconis-reveals-loureirin-b-as-a-pai-1-inhibitor
#4
Yu Jiang, Guangping Zhang, Dong Yan, Hong Yang, Zuguang Ye, Tonghui Ma
Thrombotic diseases have become a global burden due to morbidity, mortality, and disability. Traditional Chinese medicine has been proven effective in removing blood stasis and promoting blood circulation, but the exact mechanisms remain unclear. Plasminogen activator inhibitor-1 (PAI-1) is a natural inhibitor of tissue-type and urokinase-type plasminogen activators. In this study, we screened four fractions of Resina Draconis (a traditional Chinese medicine) extract for PAI-1 inhibitory activity. Bioactivity-guided purification and chromogenic substrate-based assay led to the identification of loureirin B as the major PAI-1 inhibitor, with an IC50 value of 26...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29234351/space-and-time-resolved-detection-of-platelet-activation-and-von-willebrand-factor-conformational-changes-in-deep-suspensions
#5
Jacopo Biasetti, Kaushik Sampath, Angel Cortez, Alaleh Azhir, Assaf A Gilad, Thomas S Kickler, Tobias Obser, Zaverio M Ruggeri, Joseph Katz
Tracking cells and proteins' phenotypic changes in deep suspensions is critical for the direct imaging of blood-related phenomena in in vitro replica of cardiovascular systems and blood-handling devices. This paper introduces fluorescence imaging techniques for space and time resolved detection of platelet activation, von Willebrand factor (VWF) conformational changes, and VWF-platelet interaction in deep suspensions. Labeled VWF, platelets, and VWF-platelet strands are suspended in deep cuvettes, illuminated, and imaged with a high-sensitivity EM-CCD camera, allowing detection using an exposure time of 1 ms...
2017: International Journal of Biomedical Imaging
https://www.readbyqxmd.com/read/29232365/monitoring-compliance-with-standards-of-care-for-chronic-diseases-using-healthcare-administrative-databases-in-italy-strengths-and-limitations
#6
Rosa Gini, Martijn J Schuemie, Alessandro Pasqua, Emanuele Carlini, Francesco Profili, Iacopo Cricelli, Patrizio Dazzi, Valentina Barletta, Paolo Francesconi, Francesco Lapi, Andrea Donatini, Giulia Dal Co, Modesta Visca, Mariadonata Bellentani, Miriam Sturkenboom, Niek Klazinga
BACKGROUND: A recent comprehensive report on healthcare quality in Italy published by the Organization of Economic Co-operation and Development (OECD) recommended that regular monitoring of quality of primary care by means of compliance with standards of care for chronic diseases is performed. A previous ecological study demonstrated that compliance with standards of care could be reliably estimated on regional level using administrative databases. This study compares estimates based on administrative data with estimates based on GP records for the same persons, to understand whether ecological fallacy played a role in the results of the previous study...
2017: PloS One
https://www.readbyqxmd.com/read/29229544/a-new-textured-polyphosphazene-biomaterial-with-improved-blood-coagulation-and-microbial-infection-responses
#7
Li-Chong Xu, Zhongjing Li, Zhicheng Tian, Chen Chen, Harry R Allcock, Christopher A Siedlecki
A new poly[bis(octafluoropentoxy) phosphazene] (OFP) was synthesized for the purpose of blood contacting medical devices. OFP was further either developed into crosslinkable polyphosphazene (X-OFP) or blended with polyurethane (PU) as the mixture (OFP/PU) for improvement of mechanical property of polyphosphazene polymers. All the materials were fabricated as smooth films or further textured with submicron pillars for the assay of antimicrobial and antithrombotic properties. Results showed that crosslinkable OFP (X-OFP) and blends of OFP/PU successfully improved the mechanical strength of OFP and fewer defects of pillars were found on the textured polyphosphazene surfaces...
December 8, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29229279/outcomes-of-spontaneous-isolated-superior-mesenteric-artery-dissection-without-antithrombotic-use
#8
Hyangkyoung Kim, Hojong Park, Sang Jun Park, Bong Won Park, Jae Chol Hwang, Young Woo Seo, Hong Rae Cho
OBJECTIVES: This study aimed to show the intention to treat results of treatment for spontaneous isolated superior mesenteric artery dissection (SISMAD) without anticoagulation or antiplatelet agents and the follow-up results of SISMAD according to the configuration on computed tomography (CT) scans. DESIGN: Retrospective, observational single centre study METHODS: All cases of SISMAD were enrolled consecutively from 2006 onwards. There were 25 symptomatic and four asymptomatic patients in whom SISMAD was found incidentally...
December 8, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29226969/cudratricusxanthone-a-attenuates-sepsis-induced-liver-injury-via-sirt1-signaling
#9
Yuri Lee, Gil-Saeng Jeong, Wonhwa Lee, Jong-Sup Bae
Cudratricusxanthone A (CTXA), a natural bioactive compound extracted from the roots of Cudraniatricuspidata Bureau, is known to possess antithrombotic, antiproliferative and antiinflammatory activities. It remains unclear that CTXA can improve hepatoprotective activity in vivo. The objective of this study was to investigate the effect of CTXA on lipopolysaccharide (LPS)-induced liver failure in mice, and to elucidate its underlying molecular mechanisms. Liver failure was induced by LPS (15 mg/kg, i.p.) in mice, and 12 h later, they were treated intravenously with CTXA...
December 11, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29225327/plasma-fibrin-clot-structure-and-thromboembolism-clinical-implications
#10
Michał Ząbczyk, Anetta Undas
Fibrin formed as a result of fibrinogen polymerization is a main protein component of a clot in a test tube and intravascular thrombi in vivo. Fibrin clot structure characterized by fibers diameter and pore size differs between healthy subjects and those with thromboembolic diseases, in part due to the quality and quantity of fibrinogen and the magnitude of thrombin generation. A key measure of plasma clot structure is its permeability, reflected by the Darcy constant, Ks. Reduced Ks is a typical feature of the prothrombotic fibrin clot phenotype, which is associated with faster formation of denser fibrin mesh, relatively resistant to lysis...
December 11, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/29224364/new-anticoagulants-for-venous-thromboembolism-and-atrial-fibrillation-what-the-future-holds
#11
Gerasimos Dimitropoulos, S M Zubair Rahim, Alexandra Sophie Moss, Gregory Y H Lip
Introduction The field of anticoagulation has seen impressive progress over the last decade. The introduction of the Non Vitamin K Oral Anticoagulants (NOACs) has revolutionized practice surrounding thromboprophylaxis, treatment of thromboembolic disease and stroke prevention in atrial fibrillation (AF). However, the search for the "holy grail" of anticoagulation, an agent that combines optimal efficacy with minimal bleeding diathesis, continues. Areas covered In this paper we aim to summarize the current evidence from pre-clinical studies and early phase clinical trials, presenting the pharmacodynamic and pharmacokinetic properties as well as the safety and efficacy profiles of the most important antithrombotic agents in development...
December 9, 2017: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/29223435/atrial-fibrillation-decision-support-tool-population-perspective
#12
Mark H Eckman, Alexandru Costea, Mehran Attari, Jitender Munjal, Ruth E Wise, Carol Knochelmann, Matthew L Flaherty, Pete Baker, Robert Ireton, Brett M Harnett, Anthony C Leonard, Dylan Steen, Adam Rose, John Kues
BACKGROUND: Appropriate thromboprophylaxis for patients with atrial fibrillation or atrial flutter (AF) remains a national challenge. The recent availability of direct oral anticoagulants (DOACs) with comparable efficacy and improved safety compared with warfarin alters the balance between risk factors for stroke and benefit of anticoagulation. Our objective was to examine the impact of DOACs as an alternative to warfarin on the net benefit of oral anticoagulant therapy (OAT) in a real-world population of AF patients...
December 2017: American Heart Journal
https://www.readbyqxmd.com/read/29222320/anticoagulation-with-vads-and-ecmo-walking-the-tightrope
#13
REVIEW
Leslie Raffini
The evolution of devices for mechanical circulatory support (MCS), including ventricular assist devices (VADs) for patients with heart failure and extracorporeal membrane oxygenation (ECMO) for patients with acute cardiac or respiratory failure, has improved survival for subsets of critically ill children and adults. The devices are intricate and complex, allowing blood to bypass the heart or lungs (or both). As blood flows through these artificial devices, normal hemostasis is disrupted, coagulation is promoted, and in the absence of anticoagulation, a thrombus may form in the device, resulting in device failure or embolic stroke...
December 8, 2017: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/29217662/long-term-prognostic-implications-of-cerebral-microbleeds-in-chinese-patients-with-ischemic-stroke
#14
Kui Kai Lau, Yuen Kwun Wong, Kay Cheong Teo, Richard S K Chang, Man Yu Tse, Chu Peng Hoi, Chung Yan Chan, Oi Ling Chan, Ryan Hoi Kit Cheung, Edmund Ka Ming Wong, Joseph Shiu Kwong Kwan, Edward S Hui, Henry Ka Fung Mak
BACKGROUND: This study was performed to determine the clinical correlates and long-term prognostic implications of microbleed burden and location in Chinese patients with ischemic stroke. METHODS AND RESULTS: We recruited 1003 predominantly Chinese patients with ischemic stroke who received magnetic resonance imaging at the University of Hong Kong. We determined the clinical correlates of microbleeds and the long-term risks (3126 patient-years of follow-up) of recurrent ischemic stroke and intracerebral hemorrhage (ICH) by microbleed burden (0 versus 1, 2-4, and ≥5) and location, adjusting for age, sex, and vascular risk factors and stratified by antithrombotic use...
December 7, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29216693/a-comparative-study-in-patients-with-fractures-of-the-lower-limbs-between-rivaroxaban-versus-enoxaparin-and-its-impact-on-bone-healing-time
#15
P Peláez-Damy, A Torres-Gómez, F Mas-Celis, M Martínez-Villalobos
BACKGROUND: Each year it is estimated in the United States an approximate of 8 million fractures; 5 to 10% develop delayed union or absence of periosteal new bone. There are several factors that can cause delay in fracture healing, among the well known, is the use of prophylactic antithrombotic therapy for deep vein thrombosis (DVT). DVT appears in 40 to 60% of the patients undergoing orthopedic surgery without prophylactic antithrombotic therapy. The goal of this study was to assess whether there is a difference in time of bone healing in lower limb fractures (femur and tibia) comparing rivaroxaban to enoxaparin as the prophylactic antithrombotic management...
July 2017: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/29214724/cme-1-a-novel-polysaccharide-suppresses-inos-expression-in-lipopolysaccharide-stimulated-macrophages-through-ceramide-initiated-protein-phosphatase-2a-activation
#16
Joen-Rong Sheu, Zhih-Cherng Chen, Ming-Jen Hsu, Shwu-Huey Wang, Kuo-Wei Jung, Wei-Fan Wu, Szu-Han Pan, Ruei-Dun Teng, Chih-Hao Yang, Cheng-Ying Hsieh
CME-1, a novel water-soluble polysaccharide purified from Ophiocordyceps sinensis mycelia, has anti-oxidative, antithrombotic and antitumour properties. In this study, other major attributes of CME-1, namely anti-inflammatory and immunomodulatory properties, were investigated. Treating lipopolysaccharide (LPS)-stimulated RAW 264.7 cells with CME-1 concentration-dependently suppressed nitric oxide formation and inducible nitric oxide synthase (iNOS) expression. In the CME-1-treated RAW 264.7 cells, LPS-induced IκBα degradation and the phosphorylation of p65, Akt and mitogen-activated protein kinases (MAPKs), including extracellular signal-regulated kinase, c-Jun N-terminal kinase and p38, were reduced...
December 7, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29212621/stenotic-lesions-and-the-maximum-diameter-of-coronary-artery-aneurysms-in-kawasaki-disease
#17
Etsuko Tsuda, Nobuyuki Tsujii, Yohsuke Hayama
OBJECTIVES: To determine the prevalence of subsequent stenotic lesions based on the maximum diameter of the largest coronary artery aneurysm in patients with Kawasaki disease and the threshold value of coronary artery diameter associated with risk of developing stenotic lesion. STUDY DESIGN: There were 214 patients (160 males) who had at least 1 aneurysm in a selective coronary angiogram (CAG) done <100 days after the onset of Kawasaki disease were studied. We measured the maximal coronary artery aneurysm diameter in 3 major branches in the initial CAGs...
December 4, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/29212125/regional-differences-in-antithrombotic-treatment-for-atrial-fibrillation-insights-from-the-gloria-af-phase-ii-registry
#18
Michał Mazurek, Menno V Huisman, Kenneth J Rothman, Miney Paquette, Christine Teutsch, Hans-Christoph Diener, Sergio J Dubner, Jonathan L Halperin, Chang Sheng Ma, Kristina Zint, Amelie Elsaesser, Shihai Lu, Gregory Y H Lip
No abstract text is available yet for this article.
December 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29212110/antithrombotic-therapy-in-atrial-fibrillation-associated-with-valvular-heart-disease-executive-summary-of-a-joint-consensus-document-from-the-european-heart-rhythm-association-ehra-and-european-society-of-cardiology-working-group-on-thrombosis-endorsed-by-the
#19
Gregory Y H Lip, Jean Philippe Collet, Raffaele de Caterina, Laurent Fauchier, Deirdre A Lane, Torben B Larsen, Francisco Marin, Joao Morais, Calambur Narasimhan, Brian Olshansky, Luc Pierard, Tatjana Potpara, Nizal Sarrafzadegan, Karen Sliwa, Gonzalo Varela, Gemma Vilahur, Thomas Weiss, Giuseppe Boriani, Bianca Rocca
No abstract text is available yet for this article.
December 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29208578/endeavours-to-define-optimal-antithrombotic-therapy-after-percutaneous-coronary-intervention
#20
Takeshi Kimura
No abstract text is available yet for this article.
December 8, 2017: EuroIntervention
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