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https://www.readbyqxmd.com/read/28441541/molecular-interaction-of-2-4-diacetylphloroglucinol-dapg-with-human-serum-albumin-hsa-the-spectroscopic-calorimetric-and-computational-investigation
#1
Pragna Lakshmi T, Moumita Mondal, Krishna Ramadas, Sakthivel Natarajan
Drug molecule interaction with human serum albumin (HSA) affects the distribution and elimination of the drug. The compound, 2,4-diacetylphloroglucinol (DAPG) has been known for its antimicrobial, antiviral, antihelminthic and anticancer properties. However, its interaction with HSA is not yet reported. In this study, the interaction between HSA and DAPG was investigated through steady-state fluorescence, time-resolved fluorescence (TRF), circular dichroism (CD), Fourier transform infrared (FT-IR) spectroscopy, isothermal titration calorimetry (ITC), molecular docking and molecular dynamics simulation (MDS)...
April 18, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28390791/edoxaban-defining-place-in-therapy-for-the-newest-direct-acting-oral-anticoagulant
#2
REVIEW
Caitlin M Gibson, Shannon W Finks
Edoxaban is the most recently approved factor Xa inhibitor within the class of direct oral anticoagulants (DOACs). Like other DOACs, edoxaban was approved by the FDA for treatment of venous thromboembolism and prevention of stroke in patients with non-valvular atrial fibrillation. Similar to other DOACs, edoxaban has fewer drug-drug interactions than warfarin and does not require routine laboratory monitoring. Unlike other DOACs, edoxaban has yet to be approved for secondary or postoperative venous thromboembolism thromboprophylaxis...
April 5, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28324091/association-between-dabigatran-vs-warfarin-and-risk-of-osteoporotic-fractures-among-patients-with-nonvalvular-atrial-fibrillation
#3
Wallis C Y Lau, Esther W Chan, Ching-Lung Cheung, Chor Wing Sing, Kenneth K C Man, Gregory Y H Lip, Chung-Wah Siu, Joanne K Y Lam, Alan C H Lee, Ian C K Wong
Importance: The risk of osteoporotic fracture with dabigatran use in patients with nonvalvular atrial fibrillation (NVAF) is unknown. Objective: To investigate the risk of osteoporotic fracture with dabigatran vs warfarin in patients with NVAF. Design, Setting, and Participants: Retrospective cohort study using a population-wide database managed by the Hong Kong Hospital Authority. Patients newly diagnosed with NVAF from 2010 through 2014 and prescribed dabigatran or warfarin were matched by propensity score at a 1:2 ratio with follow-up until July 31, 2016...
March 21, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28314139/patients-experiences-of-atrial-fibrillation-and-non-vitamin-k-antagonist-oral-anticoagulants-noacs-and-their-educational-needs-a-qualitative-study
#4
Danielle E Clarkesmith, Gregory Y H Lip, Deirdre A Lane
PURPOSE: Qualitative research on atrial fibrillation (AF) patient's experiences and perceptions of taking the non-vitamin K antagonist oral anticoagulants (NOACs) for stroke prevention is limited. This study explores patients' experiences of dabigatran and their recommendations for development of educational materials. PATIENTS AND METHODS: Semi-structured individual interviews with 8 warfarin-naive and 8 warfarin-experienced AF patients, using qualitative deductive thematic analysis...
March 7, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28300284/predictors-and-variability-of-drug-eluting-vs-bare-metal-stent-selection-in-contemporary-percutaneous-coronary-intervention-insights-from-the-prism-study
#5
Ali Shafiq, Kensey Gosch, Amit P Amin, Henry H Ting, John A Spertus, Adam C Salisbury
Drug-eluting stents (DES) reduce risk of in-stent restenosis after percutaneous coronary intervention (PCI) but require dual antiplatelet therapy (DAPT) for a longer term than bare-metal stents (BMS). Few studies have examined clinical predictors of DES vs BMS, and variability in provider selection between DES and BMS in clinical practice has not been well described. These insights can inform our understanding of current practice and may identify opportunities to improve decision-making stent selection decinsion-making...
March 16, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28298749/perioperative-considerations-and-management-of-patients-receiving-anticoagulants
#6
REVIEW
Safiya Imtiaz Shaikh, R Vasantha Kumari, Ganapati Hegade, M Marutheesh
Anticoagulants remain the primary strategy for the prevention and treatment of thrombosis. Unfractionated heparin, low molecular weight heparin (LMWH), fondaparinux, and warfarin have been studied and employed extensively with direct thrombin inhibitors typically reserved for patients with complications or those requiring interventions. Novel oral anticoagulants have emerged from clinical development and are expected to replace older agents with their ease to use and more favorable pharmacodynamic profiles...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28287743/a-systematic-study-of-molecular-interactions-of-anionic-drugs-with-a-dimethylaminoethyl-methacrylate-copolymer-regarding-solubility-enhancement
#7
Wiebke Saal, Alfred Ross, Nicole Wyttenbach, Jochem Alsenz, Martin Kuentz
The methacrylate-copolymer Eudragit EPO (EPO) has raised interest in solubility enhancement of anionic drugs. Effects on aqueous drug solubility at rather low polymer concentrations are barely known despite their importance upon dissolution and dilution of oral dosage forms. We provide evidence for substantial enhancement (factor 4-230) of aqueous solubility of poorly water-soluble anionic drugs induced by low (0.1-5% (w/w)) concentration of EPO for a panel of seven acidic crystalline drugs. Diffusion data (determined by (1)H nuclear magnetic resonance spectroscopy) indicate that the solubility increasing effect monitored by quantitative ultraperformance liquid chromatography was caused primarily by molecular API polymer interactions in the bulk liquid phase...
April 3, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28284508/geographical-differences-in-thromboembolic-and-bleeding-risks-in-patients-with-non-valvular-atrial-fibrillation-an-ancillary-analysis-from-the-sportif-trials
#8
Marco Proietti, Gregory Yh Lip
BACKGROUND: Atrial fibrillation (AF) is associated with an increased risk of stroke, and the use of oral anticoagulation reduces stroke and all-cause mortality. Geographical differences may exist in AF risk factors, risk stratification and treatment strategies. METHODS: A post-hoc subgroup analysis derived from randomized controlled trials, the SPORTIF III and V trials, studying differences between European and North American warfarin-assigned non-valvular AF patients...
February 27, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28254487/synthesis-and-biological-evaluation-of-c-3-aliphatic-coumarins-as-vitamin-k-antagonists
#9
Adrien Montagut-Romans, Manon Boulven, Maïwenn Jacolot, Sylvie Moebs-Sanchez, Claire Hascoët, Abdessalem Hammed, Stéphane Besse, Marc Lemaire, Etienne Benoit, Virginie Lattard, Florence Popowycz
Since the discovery of Warfarin in the 1940s, the design of new warfarin-derived anticoagulants for rodent management has been challenging, with mainly structural modifications performed on the C3 position of the coumarin skeleton. In order to better understand the pharmacomodulation of such derivatives, we have synthesized a family of C3 (linear and branched) alkyl-4-hydroxycoumarins, which led to the identification of compounds 5e and 5f as potential short-term active anticoagulants.
April 1, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28210454/managing-patients-taking-edoxaban-in-dentistry
#10
REVIEW
Adrian Curto, Daniel Curto, Jorge Sanchez
BACKGROUND: Anticoagulation therapy is used in several conditions to prevent or treat thromboembolism. A new group of oral anticoagulants with clear advantages over classic dicoumarin oral anticoagulants (warfarin and acenocoumarol) has been developed in recent years. The Food and Drug Administration has approved edoxaban, dabigatran, rivaroxaban and apixaban. Their advantages include: predictable pharmacokinetics, drug interactions and limited food, rapid onset of action and short half-life...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28178413/spontaneous-intracerebral-hemorrhage-management
#11
REVIEW
Jun Yup Kim, Hee-Joon Bae
Spontaneous non-traumatic intracerebral hemorrhage (ICH) remains a significant cause of mortality and morbidity throughout the world. To improve the devastating course of ICH, various clinical trials for medical and surgical interventions have been conducted in the last 10 years. Recent large-scale clinical trials have reported that early intensive blood pressure reduction can be a safe and feasible strategy for ICH, and have suggested a safe target range for systolic blood pressure. While new medical therapies associated with warfarin and non-vitamin K antagonist oral anticoagulants have been developed to treat ICH, recent trials have not been able to demonstrate the overall beneficial effects of surgical intervention on mortality and functional outcomes...
January 2017: Journal of Stroke
https://www.readbyqxmd.com/read/28151543/prediction-of-major-and-clinically-relevant-bleeding-in-patients-with-vte-treated-with-edoxaban-or-vitamin-k-antagonists
#12
Marcello Di Nisio, Gary Raskob, Harry R Büller, Michael A Grosso, George Zhang, Shannon M Winters, Alexander Cohen
Better understanding of risk factors for major bleeding events during anticoagulant treatment for venous thromboembolism (VTE) may help physicians when deciding on intensity and duration of treatment. The primary aim of this study was to identify risk factors for major and clinically relevant bleeding in patients receiving the oral factor Xa inhibitor edoxaban or warfarin for the treatment of acute VTE. We analysed data from 8240 patients who received ≥1 dose of study drug in the Hokusai-VTE study. Bleeding risk factors were evaluated in 4118 patients who received edoxaban and significant variables were combined in a prediction model...
April 3, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28123977/use-of-novel-oral-anticoagulant-agents-in-venous-thromboembolism
#13
REVIEW
Shivanshu Madan, Shenil Shah, Patrick Dale, Sasan Partovi, Sahil A Parikh
New oral anticoagulants (NOAC) serve as alternatives for patients currently using warfarin for the prevention and treatment of venous thromboembolic (VTE) disease. This article provides a brief summary of the clinical use of these drugs as well as a review of the landmark clinical trials which evaluated described their safety and efficacy. As more data becomes available, a fundamental understanding of these medications will be vital to cardiovascular practitioners managing patients with VTE.
December 2016: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/28061906/bilateral-rectus-sheath-haematoma-complicating-dengue-virus-infection-in-a-patient-on-warfarin-for-mechanical-aortic-valve-replacement-a-case-report
#14
Chamith Thushanga Rosa, Mitrakrishnan Rayno Navinan, Sincy Samarawickrama, Himam Hamza, Maheshika Gunarathne, Arulprashanth Arulanantham, Neeha Subba, Udari Samarasiri, Thushara Mathias, Aruna Kulatunga
BACKGROUND: The management of Dengue virus infection can be challenging. Varied presentations and numerous complications intrinsic to dengue by itself increase the complexity of treatment and potential mortality. When burdened with the presence of additional comorbidities and the need to continue compulsory medications, clear stepwise definitive guidance is lacking and patients tend to have more complex complications and outcomes calling to question the clinical decisions that may have been taken...
January 7, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/27991522/quantitative-assessment-of-the-regenerative-and-mineralogenic-performances-of-the-zebrafish-caudal-fin
#15
João Cardeira, Paulo J Gavaia, Ignacio Fernández, Ibrahim Fatih Cengiz, Joana Moreira-Silva, Joaquim Miguel Oliveira, Rui L Reis, M Leonor Cancela, Vincent Laizé
The ability of zebrafish to fully regenerate its caudal fin has been explored to better understand the mechanisms underlying de novo bone formation and to develop screening methods towards the discovery of compounds with therapeutic potential. Quantifying caudal fin regeneration largely depends on successfully measuring new tissue formation through methods that require optimization and standardization. Here, we present an improved methodology to characterize and analyse overall caudal fin and bone regeneration in adult zebrafish...
December 19, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27957279/implications-of-apixaban-for-dental-treatments
#16
REVIEW
Adrian Curto, Alberto Albaladejo
BACKGROUND: Anticoagulation therapy is used in several conditions to prevent or treat thromboembolism. Recently, new oral anticoagulants have been introduced as alternatives to warfarin and acenocoumarol. In Europe, the European Medicines Agency has approved dabigatran, rivaroxaban and apixaban. Their advantages include: predictable pharmacokinetics, drug interactions and limited food, rapid onset of action and short half-life. However, they lack a specific reversal agent. MATERIAL AND METHODS: A literature search was conducted through November 2015 for publications in the ISI Web of Knowledge, PubMed, Scopus and Cochrane Library using the keywords "apixaban", "rivaroxaban", "dabigatran", "new oral anticoagulants", "dental treatment" and "dental implications"...
December 2016: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/27918545/warfarin-traps-human-vitamin-k-epoxide-reductase-in-an-intermediate-state-during-electron-transfer
#17
Guomin Shen, Weidong Cui, Hao Zhang, Fengbo Zhou, Wei Huang, Qian Liu, Yihu Yang, Shuang Li, Gregory R Bowman, J Evan Sadler, Michael L Gross, Weikai Li
Although warfarin is the most widely used anticoagulant worldwide, the mechanism by which warfarin inhibits its target, human vitamin K epoxide reductase (hVKOR), remains unclear. Here we show that warfarin blocks a dynamic electron-transfer process in hVKOR. A major fraction of cellular hVKOR is in an intermediate redox state containing a Cys51-Cys132 disulfide, a characteristic accommodated by a four-transmembrane-helix structure of hVKOR. Warfarin selectively inhibits this major cellular form of hVKOR, whereas disruption of the Cys51-Cys132 disulfide impairs warfarin binding and causes warfarin resistance...
January 2017: Nature Structural & Molecular Biology
https://www.readbyqxmd.com/read/27914497/acute-management-of-stroke-patients-taking-non-vitamin-k-antagonist-oral-anticoagulants-addressing-real-world-anticoagulant-management-issues-in-stroke-aramis-registry-design-and-rationale
#18
Ying Xian, Adrian F Hernandez, Tina Harding, Gregg C Fonarow, Deepak L Bhatt, Robert E Suter, Yosef Khan, Lee H Schwamm, Eric D Peterson
BACKGROUND: Non-vitamin K antagonist oral anticoagulants (NOACs, dabigatran, rivaroxaban, apixaban, and edoxaban) have been increasingly used as alternatives to warfarin for stroke prophylaxis in patients with atrial fibrillation. Yet there is substantial lack of information on how patients on NOACs are currently treated when they have an acute ischemic stroke and the best strategies for treating intracerebral hemorrhage for those on chronic anticoagulation with warfarin or a NOAC. These are critical unmet needs for real world clinical decision making in these emergent patients...
December 2016: American Heart Journal
https://www.readbyqxmd.com/read/27909544/reducing-the-risk-of-stroke-in-patients-with-nonvalvular-atrial-fibrillation-with-direct-oral-anticoagulants-is-one-of-these-not-like-the-others
#19
REVIEW
Paul P Dobesh Pharm D, John Fanikos Mba R Ph
Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia and increases risk of stroke by nearly 5-fold. While warfarin has been employed successfully to reduce the risk of stroke in these patients, there are a number of challenges with therapy. These include the need for therapeutic monitoring due to variability in patient response, frequent dose adjustments, numerous drug-drug, drug-food, and drug-disease interactions, and a heightened risk of thrombosis and bleeding due to these issues. Current guidelines recommend that the vitamin K antagonists (VKA) or direct oral anticoagulants (DOACs) should be used for thromboprophylaxis in patients with nonvalvular AF at risk for stroke or systemic embolic events...
August 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27861698/influence-of-competing-risks-on-estimating-the-expected-benefit-of-warfarin-in-individuals-with-atrial-fibrillation-not-currently-taking-anticoagulants-the-anticoagulation-and-risk-factors-in-atrial-fibrillation-study
#20
Jeffrey M Ashburner, Alan S Go, Yuchiao Chang, Margaret C Fang, Lisa Fredman, Katie M Applebaum, Daniel E Singer
OBJECTIVES: To provide greater understanding of the "real world" effect of anticoagulation on stroke risk over several years. DESIGN: Cohort study. SETTING: Anticoagulation and Risk Factors in Atrial Fibrillation Study community-based cohort. PARTICIPANTS: Adults with nonvalvular atrial fibrillation (AF) between 1996 and 2003 (13,559). MEASUREMENTS: All events were clinician adjudicated. Extended Cox regression with longitudinal warfarin exposure was used to estimate cause-specific hazard ratios (HRs) for thromboembolism and the competing risk event (all cause death)...
January 2017: Journal of the American Geriatrics Society
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