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https://www.readbyqxmd.com/read/28426737/incidence-and-predictors-of-excessive-warfarin-anticoagulation-in-patients-with-atrial-fibrillation-the-ewa-study
#1
Samuli Jaakkola, Ilpo Nuotio, Tuomas O Kiviniemi, Raine Virtanen, Melina Issakoff, K E Juhani Airaksinen
Vitamin K antagonist warfarin is widely used in clinical practice and excessive anticoagulation is a well-known complication of this therapy. Little is known about permanent and temporary predictors for severe overanticoagulation. The aim of this study was to investigate the occurrence and predicting factors for episodes with very high (≥9) international normalized ratio (INR) values in warfarin treated patients with atrial fibrillation (AF). Excessive Warfarin Anticoagulation (EWA) study screened all patients (n = 13618) in the Turku University Hospital region with an INR ≥2 between years 2003-2015...
2017: PloS One
https://www.readbyqxmd.com/read/28394435/real-world-clinical-characteristics-and-treatment-patterns-of-individuals-aged-80-and-older-with-nonvalvular-atrial-fibrillation-results-from-the-real-life-multicenter-survey-evaluating-stroke-study
#2
Murat Biteker, Özcan Başaran, Volkan Doğan, İbrahim Altun, Fatma Özpamuk Karadeniz, Ahmet İlker Tekkesin, Yasin Çakıllı, Ceyhan Türkkan, Mehmet Hamidi, Vahit Demir, Mustafa Ozan Gürsoy, Müjgan Tek Öztürk, Gökhan Aksan, Sabri Seyis, Mehmet Ballı, Mehmet Hayri Alıcı, Serdar Bozyel
OBJECTIVES: To compare the clinical characteristics of and use of oral anticoagulant (OAC) therapy in individuals aged 80 and older with atrial fibrillation (AF) with those of individuals younger than 80 with AF in clinical practice. DESIGN: Observational study. SETTING: The ReAl-life Multicenter Survey Evaluating Stroke prevention strategies in Turkey trial (NCT02344901), a national observational registry. PARTICIPANTS: Turkish adults with nonvalvular AF (NVAF)...
April 10, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28379643/integrating-in-vitro-modeling-and-in-vivo-approaches-to-investigate-warfarin-bioequivalence
#3
Xinyuan Zhang, Hong Wen, Jianghong Fan, Bradley Vince, Tonglei Li, Wei Gao, Minori Kinjo, Jill Brown, Wanjie Sun, Wenlei Jiang, Robert Lionberger
We demonstrate the use of modeling and simulation to investigate bioequivalence concerns raised about generic warfarin products. To test the hypothesis that the loss of isopropyl alcohol and slow dissolution in acidic pH have significant impact on the pharmacokinetics of warfarin sodium tablets, we conducted physiologically based pharmacokinetic absorption modeling and simulation using formulation factors, or in vitro dissolution profiles as input parameters. Sensitivity analyses indicated that warfarin pharmacokinetics was not sensitive to solubility, particle size and density, or dissolution rate in pH 4...
April 5, 2017: CPT: Pharmacometrics & Systems Pharmacology
https://www.readbyqxmd.com/read/28296671/the-use-of-thrombolytic-therapy-in-the-treatment-of-frostbite-injury
#4
Allyson Wexler, Sarah Zavala
Frostbite can lead to severe consequences including loss of digits and limbs. One of the mechanisms of frostbite includes vascular thrombosis. The use of tissue plasminogen activator (tPA) in frostbite has been shown to be effective in case reports and small prospective studies. A retrospective chart review was performed on all patients admitted for frostbite between January 2008 and April 2015, and six patients were identified as having received treatment with intravenous tPA. Patients received an initial bolus dose followed by a 6-hour infusion of tPA...
March 3, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28283218/long-term-performance-evaluation-of-small-diameter-vascular-grafts-based-on-polyvinyl-alcohol-hydrogel-and-dextran-and-mscs-based-therapies-using-the-ovine-pre-clinical-animal-model
#5
Nuno Alexandre, Irina Amorim, Ana Rita Caseiro, Tiago Pereira, Rui Alvites, Alexandra Rêma, Ana Gonçalves, Guilherme Valadares, Elísio Costa, Alice Santos-Silva, Miguel Rodrigues, Maria Ascensão Lopes, André Almeida, José Domingos Santos, Ana Colette Maurício, Ana Lúcia Luís
The functional and structural performance of a 5cm synthetic small diameter vascular graft (SDVG) produced by the copolymerization of polyvinyl alcohol hydrogel with low molecular weight dextran (PVA/Dx graft) associated to mesenchymal stem cells (MSCs)-based therapies and anticoagulant treatment with heparin, clopidogrel and warfarin was tested using the ovine model during the healing period of 24 weeks. The results were compared to the ones obtained with standard expanded polyetetrafluoroethylene grafts (ePTFE graft)...
March 7, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28178408/epidemiology-risk-factors-and-clinical-features-of-intracerebral-hemorrhage-an-update
#6
REVIEW
Sang Joon An, Tae Jung Kim, Byung-Woo Yoon
Intracerebral hemorrhage (ICH) is the second most common subtype of stroke and a critical disease usually leading to severe disability or death. ICH is more common in Asians, advanced age, male sex, and low- and middle-income countries. The case fatality rate of ICH is high (40% at 1 month and 54% at 1 year), and only 12% to 39% of survivors can achieve long-term functional independence. Risk factors of ICH are hypertension, current smoking, excessive alcohol consumption, hypocholesterolemia, and drugs. Old age, male sex, Asian ethnicity, chronic kidney disease, cerebral amyloid angiopathy (CAA), and cerebral microbleeds (CMBs) increase the risk of ICH...
January 2017: Journal of Stroke
https://www.readbyqxmd.com/read/28160742/determination-of-rodenticides-and-related-metabolites-in-rabbit-liver-and-biological-matrices-by-liquid-chromatography-coupled-to-orbitrap-high-resolution-mass-spectrometry
#7
Marina López-García, Roberto Romero-González, Antonia Garrido Frenich
An analytical method based on ultra-high performance liquid chromatography (UHPLC) coupled to Orbitrap high resolution mass spectrometry was developed for the determination of rodenticides (bromadiolone, brodifacoum, difenacoum, chlorophacinone, diphacinone, coumachlor and warfarin) in liver matrix. Different extraction conditions were tested, obtaining the best results when the "dilute and shoot" method (acidified acetonitrile as extraction solvent) and a clean-up step with primary secondary amine (PSA) were used...
January 28, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28119762/synthesis-spectroscopic-dielectric-molecular-docking-and-dft-studies-of-3e-3-4-methylbenzylidene-3-4-dihydro-2h-chromen-2-one-an-anticancer-agent
#8
T Beena, L Sudha, A Nataraj, V Balachandran, D Kannan, M N Ponnuswamy
BACKGROUND: Coumarin (2H-chromen-2-one) and its derivatives have a wide range of biological and pharmaceutical activities. They possess antitumor, anti-HIV, anticoagulant, antimicrobial, antioxidant, and anti-inflammatory activities. Synthesis and isolation of coumarins from different species have attracted the attention of medicinal chemists. Herein, we report the synthesis, molecular structure, dielectric, anticancer activity and docking studies with the potential target protein tankyrase...
2017: Chemistry Central Journal
https://www.readbyqxmd.com/read/28057799/prospective-study-of-oral-anticoagulants-and-risk-of-liver-injury-in-patients-with-atrial-fibrillation
#9
Alvaro Alonso, Richard F MacLehose, Lin Y Chen, Lindsay Gs Bengtson, Alanna M Chamberlain, Faye L Norby, Pamela L Lutsey
OBJECTIVE: To assess the risk of liver injury hospitalisation in patients with atrial fibrillation (AF) after initiation of direct oral anticoagulants (DOACs) or warfarin and to determine predictors of liver injury hospitalisation in this population. METHODS: We studied 113 717 patients (mean age 70, 39% women) with AF included in the MarketScan Commercial and Medicare Supplemental databases with a first prescription for oral anticoagulation after 4 November 2011, followed through 31 December 2014...
January 5, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28049362/warfarin-dose-model-for-the-prediction-of-stable-maintenance-dose-in-indian-patients
#10
Tejasvita Gaikwad, Kanjaksha Ghosh, Peter Avery, Farhad Kamali, Shrimati Shetty
The main aim of this study was to screen various genetic and nongenetic factors that are known to alter warfarin response and to generate a model to predict stable warfarin maintenance dose for Indian patients. The study comprised of 300 warfarin-treated patients. Followed by extensive literature review, 10 single-nucleotide polymorphisms, that is, VKORC1-1639 G>A (rs9923231), CYP2C9*2 (rs1799853), CYP2C9*3 (rs1057910), FVII R353Q (rs6046), GGCX 12970 C>G (rs11676382), CALU c.*4A>G (rs1043550), EPHX1 c...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/27884245/acute-kidney-injury-in-asians%C3%A2-with%C3%A2-atrial%C3%A2-fibrillation-treated%C3%A2-with%C3%A2-dabigatran%C3%A2-or-warfarin
#11
Yi-Hsin Chan, Yung-Hsin Yeh, Lai-Chu See, Chun-Li Wang, Shang-Hung Chang, Hsin-Fu Lee, Lung-Sheng Wu, Hui-Tzu Tu, Chi-Tai Kuo
BACKGROUND: Whether dabigatran is associated with a lower risk of acute kidney injury (AKI) in patients with nonvalvular atrial fibrillation (NVAF) remains unknown. OBJECTIVES: The authors compared the risk of AKI in Asians with NVAF who were prescribed dabigatran versus warfarin. METHODS: The authors analyzed patients enrolled in the Taiwan nationwide retrospective cohort study from June 1, 2012, to December 31, 2013. Dabigatran and warfarin were taken by 7,702 and 7,885 NVAF patients without a history of chronic kidney disease (CKD) and 2,256 and 2,089 NVAF patients with a history of CKD, respectively...
November 29, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27698722/analysis-of-the-first-therapeutic-target-achieving-time-of-warfarin-therapy-and-associated-factors-in-patients-with-pulmonary-embolism
#12
Xiaowei Gong, Haiyan Wang, Yadong Yuan
The present study aimed to investigate the factors affecting the first therapeutic-target-achieving (TTA) time of warfarin therapy in patients with acute pulmonary embolism (PTE). Between January 2008 and June 2013, patients with PTE confirmed by transpulmonary arterial enhanced computed tomographic pulmonary angiography or pulmonary ventilation perfusion scanning were included in the present study. Data collected included demographic information, history of tobacco and alcohol intake, basic diseases (stable and unstable hypertension, diabetes, heart failure, cancer/cerebral infarction, old myocardial infarction and atrial fibrillation), liver and kidney function, the haemoglobin and platelet count of the blood, international normalized ratio monitoring, warfarin dosage adjustment and medication combinations...
October 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27688985/cardiovascular-disease-death-before-age-65-in-168-countries-correlated-statistically-with-biometrics-socioeconomic-status-tobacco-gender-exercise-macronutrients-and-vitamin-k
#13
David K Cundiff, Paul S Agutter
BACKGROUND: Nutrition researchers recently recognized that deficiency of vitamin K2 (menaquinone: MK-4-MK-13) is widespread and contributes to cardiovascular disease (CVD). The deficiency of vitamin K2 or vitamin K inhibition with warfarin leads to calcium deposition in the arterial blood vessels. METHODS: Using publicly available sources, we collected food commodity availability data and derived nutrient profiles including vitamin K2 for people from 168 countries...
August 24, 2016: Curēus
https://www.readbyqxmd.com/read/27639624/long-term-performance-evaluation-of-small-diameter-vascular-grafts-based-on-polyvinyl-alcohol-hydrogel-and-dextran-and-mscs-based-therapies-using-the-ovine-pre-clinical-animal-model
#14
Nuno Alexandre, Irina Amorim, Ana Rita Caseiro, Tiago Pereira, Rui Alvites, Alexandra Rêma, Ana Gonçalves, Guilherme Valadares, Elísio Costa, Alice Santos-Silva, Miguel Rodrigues, Maria Ascensão Lopes, André Almeida, José Domingos Santos, Ana Colette Maurício, Ana Lúcia Luís
The functional and structural performance of a 5cm synthetic small diameter vascular graft (SDVG) produced by the copolymerization of polyvinyl alcohol hydrogel with low molecular weight dextran (PVA/Dx graft) associated to mesenchymal stem cells (MSCs)-based therapies and anticoagulant treatment with heparin, clopidogrel and warfarin was tested using the ovine model during the healing period of 24 weeks. The results were compared to the ones obtained with standard expanded polyetetrafluoroethylene grafts (ePTFE graft)...
November 20, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27565120/warfarin-persistence-among-atrial-fibrillation-patients-why-is-treatment-ended
#15
Fredrik Björck, Agnes Ek, Lars Johansson, Anders Själander
BACKGROUND AND AIM: Warfarin treatment discontinuation is significant among patients with atrial fibrillation (AF). Studies mainly focused on whether the proportion of warfarin persistence and discontinuation are clinically appropriate are absent. This study evaluates warfarin persistence with focus on predictors for, and reasons to, warfarin discontinuation in AF patients. METHODS: From the national quality register AuriculA, all AF patients in Sundsvall, Sweden, on warfarin treatment on January 1, 2010 were included...
December 2016: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/27401780/safety-and-feasibility-of-treatment-with-rivaroxaban-for-non-canonical-indications-a-case-series-analysis
#16
Domenico Acanfora, Chiara Acanfora, Pietro Scicchitano, Marialaura Longobardi, Giuseppe Furgi, Gerardo Casucci, Bernardo Lanzillo, Ilaria Dentamaro, Annapaola Zito, Raffaele Antonelli Incalzi, Marco Matteo Ciccone
BACKGROUND AND OBJECTIVES: The new oral anticoagulants (NOACs) are used for the prevention of thromboembolic complications in patients with non-valvular atrial fibrillation (AF) and those at risk of deep venous thrombosis. Their rapid onset of action and predictable pharmacokinetic and pharmacodynamic profiles make them the optimal alternative to warfarin in the treatment of these two categories of patients. Unfortunately, however, NOACs cannot be used in patients with valvular AF or valvular cardiac prostheses...
October 2016: Clinical Drug Investigation
https://www.readbyqxmd.com/read/27328700/risk-profile-of-symptomatic-lacunar-stroke-versus-nonlobar-intracerebral-hemorrhage
#17
Andrea Morotti, Maurizio Paciaroni, Andrea Zini, Giorgio Silvestrelli, Elisabetta Del Zotto, Valeria Caso, Maria Luisa Dell'Acqua, Anna Maria Simone, Alessia Lanari, Paolo Costa, Loris Poli, Valeria De Giuli, Massimo Gamba, Alfonso Ciccone, Marco Ritelli, Augusto Di Castelnuovo, Licia Iacoviello, Marina Colombi, Giancarlo Agnelli, Mario Grassi, Giovanni de Gaetano, Alessandro Padovani, Alessandro Pezzini
BACKGROUND AND PURPOSE: Although lacunar stroke (LS) and deep intracerebral hemorrhage (dICH) represent acute manifestations of the same pathological process involving cerebral small vessels (small vessel disease), it remains unclear what factors predispose to one phenotype rather than the other at individual level. METHODS: Consecutive patients with either acute symptomatic LS or dICH were prospectively enrolled as part of a multicenter Italian study. We compared the risk factor profile of the 2 subgroups using multivariable logistic regression...
August 2016: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/27247158/profile-and-anticoagulation-outcomes-of-patients-on-warfarin-therapy-in-an-urban-hospital-in-cape-town-south-africa
#18
Babatunde O Sonuga, Derek A Hellenberg, Clint S Cupido, Cilia Jaeger
BACKGROUND: Warfarin is the most frequently used oral anticoagulant worldwide and it is the oral anticoagulant of choice in South Africa for reducing thrombosis-related morbidity and mortality. However, the safety and efficacy of warfarin therapy depends mainly on careful monitoring and maintenance of the international normalised ratio (INR) within an optimal therapeutic range. AIM: The aim of this study was to describe the profile and the anticoagulation outcomes of patients on warfarin therapy in a major warfarin clinic in the Western Cape Province of South Africa...
May 31, 2016: African Journal of Primary Health Care & Family Medicine
https://www.readbyqxmd.com/read/27245760/predictors-of-supratentorial-deep-intracerebral-hemorrhage-volume-and-their-effect-on-short-term-mortality-in-asians
#19
Myung Hoon Han, Jae Min Kim, Hyeong-Joong Yi, Jin Hwan Cheong, Yong Ko, Choong Hyun Kim, Young-Soo Kim
BACKGROUND: The volume of intracerebral hemorrhage (ICH) measured at hospital admission is the strongest predictor of clinical outcomes in patients with ICH. Despite the high incidence rate of ICH in Asians, there is lack of data regarding predictors of ICH volume in this ethnic group. The purpose of this study was to determine predictors of deep ICH volume and examine their effect on short-term mortality in Asians. METHODS: Hematoma volume was measured using the ABC/2 method...
2016: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/27055738/carbonyl-reduction-of-warfarin-identification-and-characterization-of-human-warfarin-reductases
#20
Petra Malátková, Simona Sokolová, Lucie Chocholoušová Havlíková, Vladimír Wsól
Warfarin is a widely used anticoagulant and, unfortunately, is a drug that is commonly implicated in serious adverse events including fatalities. Although several factors, including the metabolism of warfarin via CYP450, have been reported to affect the safety and efficacy of warfarin therapy, the wide variance in the warfarin dosage in patients has not been completely clarified. In addition to the oxidative metabolism of warfarin mediated by CYP450, reductive metabolism is involved in warfarin biotransformation...
June 1, 2016: Biochemical Pharmacology
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