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https://www.readbyqxmd.com/read/29239808/drug-class-renal-elimination-and-outcomes-of-direct-oral-anticoagulants-in-asian-patients-a-meta-analysis
#1
Kang-Ling Wang, Chun-Chih Chiu, Robert P Giugliano, Doreen Su-Yin Tan, Chun-Yi Lin, En-Yu Lai, Shinya Goto, Chern-En Chiang
BACKGROUND: Direct oral anticoagulants (DOACs) have a better risk benefit profile in Asian patients with atrial fibrillation (AF). Whether treatment effects could be modified by drug class and dependency on renal elimination of studied agents has not yet been explored. METHODS: We searched PubMed, CENTRAL, and CINAHL databases through November 2016 for phase III randomized controlled trials comparing DOACs with warfarin in patients with AF. Efficacy and safety outcomes were pooled according to drug class and dependency on renal elimination of DOACs and were compared with the Mantel-Haenszel fixed-effects model...
November 24, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29226697/update-on-the-use-of-direct-oral-anticoagulants-for-the-prevention-and-treatment-of-thromboembolism
#2
Anna Jacobs, Rajesh Kabra, Pranab Das, Carrie S Oliphant
Following publication of our review article 4 years ago, there has been an uptake in the use of nonvitamin K oral antagonists, also known as direct oral anticoagulants. The most recent Xa inhibitors to receive approval are edoxaban, which has been approved for use in both atrial fibrillation and venous thromboembolism prevention and betrixaban, which has been approved in the USA for extended thromboprophylaxis in the medically ill population. Additional analyses of certain types of atrial fibrillation patients have now become available...
December 11, 2017: Future Cardiology
https://www.readbyqxmd.com/read/29217335/rivaroxaban-and-apixaban-for-initial-treatment-of-acute-venous-thromboembolism-of-atypical-location
#3
Dawid T Janczak, Malgorzata K Mimier, Robert D McBane, Patrick S Kamath, Benjamin S Simmons, Dalene M Bott-Kitslaar, Charles J Lenz, Emily R Vargas, David O Hodge, Waldemar E Wysokinski
OBJECTIVES: To assess the outcome of direct oral anticoagulants (DOACs), specifically Xa inhibitors: rivaroxaban and apixaban, for the treatment of venous thromboembolism (VTE) of atypical location (VTE-AL), portal, mesenteric, hepatic, splenic, gonadal, renal, and cerebral veins, prospectively collected data of Mayo Thrombophilia Clinic Registry were used. METHODS: Patients with acute VTE-AL treated with DOACs, enrolled between March 1, 2013, and February 1, 2017, were compared with patients with VTE of typical location (VTE-TL: deep vein thrombosis of extremities and/or pulmonary embolism) receiving DOACs and with patients with VTE-AL treated with enoxaparin...
December 4, 2017: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/29202213/rivaroxaban-for-preventing-venous-thromboembolism-in-high-risk-ambulatory-patients-with-cancer-rationale-and-design-of-the-cassini-trial
#4
Alok A Khorana, Saroj Vadhan-Raj, Nicole M Kuderer, Ted Wun, Howard Liebman, Gerald Soff, Chandra Belani, Eileen M O'Reilly, Robert McBane, John Eikelboom, C V Damaraju, Karen Beyers, Flavia Dietrich, Ajay K Kakkar, Hanno Riess, Renata D'Alpino Peixoto, Gary H Lyman
Venous thromboembolism (VTE) is a frequent complication of cancer associated with morbidity, mortality, increased hospitalizations and higher health care costs. Cancer patients at increased risk for VTE can be identified using a validated risk assessment score, and the incidence of VTE can be reduced in high-risk settings using anticoagulation. Rivaroxaban is a potent, oral, direct, factor Xa inhibitor approved for the prevention and treatment of thromboembolic events, including VTE. CASSINI is a double-blind, randomized, parallel-group, multicentre study comparing rivaroxaban with placebo in adult ambulatory patients with various cancers who are initiating systemic cancer therapy and are at high risk of VTE (Khorana score ≥ 2)...
November 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29194698/impaired-rivaroxaban-clearance-in-mild-renal-insufficiency-with-verapamil-coadministration-potential-implications-for-bleeding-risk-and-dose-selection
#5
David J Greenblatt, Maulik Patel, Jerold S Harmatz, Wayne T Nicholson, Christopher M Rubino, Christina R Chow
Pharmacokinetics and antithrombotic effects of the Factor Xa inhibitor rivaroxaban were studied in subjects with mild renal insufficiency concurrently taking the P-glycoprotein and moderate CYP3A inhibitor verapamil, a drug commonly administered to patients with hypertension, ischemic heart disease, or atrial fibrillation. Age-matched controls with normal renal function were studied concurrently. Subjects' overall mean age was 59 years. Mean creatinine clearance values in the 2 groups were 105 and 71 mL/min...
November 30, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29176379/thrombin-generation-estimates-the-anticoagulation-effect-of-direct-oral-anticoagulants-with-significant-interindividual-variability-observed
#6
Joseph Rigano, Cheryl Ng, Harshal Nandurkar, Prahlad Ho
: Direct oral anticoagulants (DOACs) are increasingly being used, primarily due to their drug stability and patient convenience. Although these drugs have been evaluated to be well tolerated in numerous clinical trials, their impact on in-vivo anticoagulation effect, variability and therapeutic drug level remains unknown. Hence, we aim to study the effect and variability of DOACs on thrombin generation via the calibrated automated thrombogram. Anonymized coagulation specimens from outpatients on warfarin were collected...
November 25, 2017: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/29175298/does-type-2-diabetes-affect-the-on-treatment-levels-of-direct-oral-anticoagulants-in-patients-with-atrial-fibrillation
#7
Matej Samoš, Tomáš Bolek, Lucia Stančiaková, Ingrid Škorňová, Jela Ivanková, František Kovář, Peter Galajda, Peter Kubisz, Ján Staško, Marián Mokáň
AIMS: Type 2 diabetes (T2D) is connected with several abnormalities in haemostasis; and with higher risk of stroke and systemic embolism in patients with non-valvular atrial fibrillation (NV-AF). However, it is recently unknown whether T2D affects the activity of direct oral anticoagulants (DOACs). The aim of this study was to determine the impact of T2D on DOACs activity in patients with NV-AF. METHODS: This pilot prospective study enrolled totally 65 patients with NV-AF (20 dabigatran-treated, 110 mg/twice daily; 28 rivaroxaban-treated, 15 mg/daily; 17 apixaban-treated, 5 mg/twice daily)...
November 23, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/29173156/identification-of-human-acetylcholine-esterase-inhibitors-from-the-constituents-of-egb761-by-modeling-docking-and-molecular-dynamics-simulations
#8
Lihu Zhang, Dongdong Li, Fuliang Cao, Wei Xiao, Linguo Zhao, Zhenzhong Wang, Gang Ding
EGb761, a standardized and well-defined product extract of Ginkgo biloba leaves, has beneficial effects on the treatment of multiple diseases, particularly Alzheimer's disease (AD). Identification of natural acetylcholine esterase (AChE) inhibitors from EGb761 would provide a novel therapeutic approach against the Alzheimer's disease. A series of 21 kinds of promising EGB761 compounds were selected, and subsequently evaluated for their potential ability to bind AChE enzyme by molecular docking and a deep analysis of protein surface pocket features...
November 23, 2017: Combinatorial Chemistry & High Throughput Screening
https://www.readbyqxmd.com/read/29172203/-factor-xa-inhibitor-for-the-treatment-of-cerebral-venous-thrombosis-with-intracerebral-hemorrhage-during-anticoagulation-therapy-a-case-report
#9
Takehiro Kitagawa, Tetsuhiro Kitahara
A 46-year-old man presented with headache, right hemiparesis, and motor aphasia. A diagnosis of cerebral venous thrombosis with subarachnoid hemorrhage was made. We started intravenous administration of unfractionated heparin. After 6 days in hospital, the right hemiparesis and motor aphasia worsened, and brain computed tomographic(CT)images demonstrated intracerebral hemorrhage in the left parietal lobe. Therefore, we switched treatment from heparin to apixaban. His condition improved and a brain magnetic resonance(MR)venogram after 7 days in hospital showed recanalization of the cerebral veins...
November 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/29147720/anticoagulation-in-atrial-fibrillation-current-evidence-and-guideline-recommendations
#10
J W Erath, S H Hohnloser
Atrial fibrillation (AF) is the most frequently encountered sustained arrhythmia with a prevalence of 0.5-10%, depending predominantly on age. The arrhythmia is associated with significant morbidity and mortality, mainly due to thromboembolic events including stroke and systemic embolisms. These complications can be effectively prevented with anticoagulation therapy either with vitamin K antagonists (VKA) or with non-vitamin K antagonists (NOAC). VKA therapy is effective in preventing strokes but these medications are difficult to use, are associated with significant bleeding risk, and have pharmacokinetic/dynamic properties that make their use cumbersome...
November 17, 2017: Herz
https://www.readbyqxmd.com/read/29138609/non-valvular-atrial-fibrillation-impact-of-apixaban-on-patient-outcomes
#11
REVIEW
Adam Ioannou, Irene Tsappa, Sofia Metaxa, Constantinos G Missouris
Atrial fibrillation is the most common arrhythmia worldwide, and carries a significantly increased risk of thromboembolic stroke. Initially, vitamin K antagonists were used as stroke prophylaxis; but more recently, a group of drugs known as novel oral anticoagulants have been developed. Apixaban belongs to this group of drugs, and is a factor Xa inhibitor that has emerged as a popular pharmacological agent worldwide. In this review, we will provide an overview of the pivotal trials in the development of apixaban, while also critically evaluating the new emerging real-world data, and discussing the effectiveness, safety, economic viability and future prospects of apixaban and how it impacts on patient outcomes in those with non-valvular atrial fibrillation...
2017: Patient related Outcome Measures
https://www.readbyqxmd.com/read/29132879/rivaroxaban-with-or-without-aspirin-in-patients-with-stable-coronary-artery-disease-an-international-randomised-double-blind-placebo-controlled-trial
#12
Stuart J Connolly, John W Eikelboom, Jackie Bosch, Gilles Dagenais, Leanne Dyal, Fernando Lanas, Kaj Metsarinne, Martin O'Donnell, Anthony L Dans, Jong-Won Ha, Alexandr N Parkhomenko, Alvaro A Avezum, Eva Lonn, Liu Lisheng, Christian Torp-Pedersen, Petr Widimsky, Aldo P Maggioni, Camilo Felix, Katalin Keltai, Masatsugu Hori, Khalid Yusoff, Tomasz J Guzik, Deepak L Bhatt, Kelley R H Branch, Nancy Cook Bruns, Scott D Berkowitz, Sonia S Anand, John D Varigos, Keith A A Fox, Salim Yusuf
BACKGROUND: Coronary artery disease is a major cause of morbidity and mortality worldwide, and is a consequence of acute thrombotic events involving activation of platelets and coagulation proteins. Factor Xa inhibitors and aspirin each reduce thrombotic events but have not yet been tested in combination or against each other in patients with stable coronary artery disease. METHODS: In this multicentre, double-blind, randomised, placebo-controlled, outpatient trial, patients with stable coronary artery disease or peripheral artery disease were recruited at 602 hospitals, clinics, or community centres in 33 countries...
November 10, 2017: Lancet
https://www.readbyqxmd.com/read/29131074/tranexamic-acid-failed-to-reverse-the-anticoagulant-effect-and-bleeding-by-an-oral-direct-factor-xa-inhibitor-edoxaban
#13
Yuko Honda, Taketoshi Furugohri, Yoshiyuki Morishima
BACKGROUND/AIMS: Agents to reverse the anticoagulant effect of edoxaban, an oral direct factor Xa inhibitor, would be desirable in emergency situations. The aim of this study is to determine the effect of tranexamic acid, an antifibrinolytic agent, on the anticoagulant activity and bleeding by edoxaban in rats. METHODS: A supratherapeutic dose of edoxaban (3 mg/kg) was intravenously administered to rats. Three minutes after dosing, tranexamic acid (100 mg/kg) was given intravenously...
November 3, 2017: Pharmacology
https://www.readbyqxmd.com/read/29126301/coagulation-testing-in-the-core-laboratory
#14
William E Winter, Sherri D Flax, Neil S Harris
Primary hemostasis begins with endothelial injury. VWF, produced by endothelial cells, binds to platelets and links them to subendothelial collagen. Platelet-derived ADP and thromboxane activate non-adhered platelets via their GPIIb/IIIa receptors, allowing these platelets to participate in platelet aggregation. Secondary hemostasis is initiated with the binding of factor VII to extravascular tissue factor (TF). Factors II, VII, IX and X are vitamin K-dependent factors. The role of vitamin K is to assist in the addition of gamma carboxylate groups to glutamic acids in the "GLA" domains of these factors...
November 8, 2017: Laboratory Medicine
https://www.readbyqxmd.com/read/29120909/rivaroxaban-induced-hepatotoxicity-review-of-the-literature-and-report-of-new-cases
#15
Anna Licata, Fania Puccia, Vania Lombardo, Antonietta Serruto, Maria G Minissale, Ilaria Morreale, Lydia Giannitrapani, Maurizio Soresi, Giuseppe Montalto, Piero L Almasio
AIM/OBJECTIVE/BACKGROUND: Direct-acting oral anticoagulant drugs are marketed worldwide for the primary and secondary prevention and treatment of thromboembolic disorders. Rivaroxaban, an oral, direct factor Xa inhibitor, is one of the most used. Rivaroxaban-induced hepatotoxicity is unusual, although a number of adverse reports have recently been reported. Here, we report two new cases of rivaroxaban-induced hepatitis. METHODS: A systematic search of case reports on the MEDLINE database encompassing the years 2008-2016 was carried out...
November 8, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29119147/betrixaban-a-direct-oral-inhibitor-of-activated-factor-x-for-the-prophylaxis-of-venous-thromboembolism-in-patients-hospitalized-for-acute-medical-illness
#16
G Escolar, M Díaz-Ricart, E Arellano-Rodrigo
Venous thromboembolism (VTE), comprising deep vein thrombosis and pulmonary embolism, is a serious clinical and public health concern. Hospitalization is a major risk factor for developing VTE. Hospital-associated events account for more than 50% of all cases of VTE. Heparins have demonstrated to be efficacious in the prevention of VTE in medically ill patients. Despite the demonstrated efficacy and safety of the available direct oral anticoagulants in the prevention and treatment of different thromboembolic conditions, their net benefit in the prevention of VTE in hospitalized medically ill patients has not been fully confirmed...
August 2017: Drugs of Today
https://www.readbyqxmd.com/read/29117605/-new-oral-anticoagulants-noac-in-stroke-treatment
#17
Clemens Küpper, Lars Kellert, Steffen Tiedt, Frank Arne Wollenweber
Since 2011, new oral anticoagulants (NOAC) can be prescribed for prevention of cardio-embolic ischemic strokes in addition to vitamin K antagonists. NOAC are indicated in patients with non-valvular atrial fibrillation. Although its use is a matter of debate in Germany, the neurological and cardiological societies recommend the use of NOAC over and above vitamin K antagonists due to a better benefit-to-risk ratio attributed to it, especially because of the lower risk of intracranial hemorrhage in NOAC use. A specific antidote is commercially available for the direct thrombin inhibitor dabigatran only...
November 8, 2017: Fortschritte der Neurologie-Psychiatrie
https://www.readbyqxmd.com/read/29106076/rivaroxaban-reversal-with-prothrombin-complex-concentrate-or-tranexamic-acid-in-healthy-volunteers
#18
J H Levy, K T Moore, M D Neal, D Schneider, V S Marcsisin, J Ariyawansa, J I Weitz
BACKGROUND: Oral factor Xa inhibitors such as rivaroxaban are widely used, but specific reversal agents are lacking. Although 4-factor-prothrombin complex concentrate (4F-PCC) and tranexamic acid (TXA) are sometimes used to manage serious bleeding, their efficacy is unknown. Prior studies in healthy subjects taking rivaroxaban revealed that 4F-PCC partially reverses the prolonged prothrombin time (PT), and fully restores endogenous thrombin potential (ETP). The effect of TXA has not been evaluated...
November 6, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29105666/-low-or-reduced-semantics-of-the-doses-of-new-oral-anticoagulants
#19
Andrea Rubboli
The four new oral anticoagulants (NOACs) dabigatran, rivaroxaban, apixaban and edoxaban are marketed in two doses each for the prevention of stroke and/or systemic thromboembolism in non-valvular atrial fibrillation (NVAF). The meaning and indications for use of the lower dose compared with the higher dose are, however, different between the thrombin-inhibitor dabigatran on the one hand and the activated factor X (Xa) inhibitors on the other. These differences stem from the different design of the registration studies where NOACs were compared with warfarin for the prevention of stroke and/or systemic thromboembolism in patients with NVAF...
September 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/29105079/direct-oral-anticoagulants-versus-warfarin-for-preventing-stroke-and-systemic-embolic-events-among-atrial-fibrillation-patients-with-chronic-kidney-disease
#20
REVIEW
Miho Kimachi, Toshi A Furukawa, Kimihiko Kimachi, Yoshihito Goto, Shingo Fukuma, Shunichi Fukuhara
BACKGROUND: Chronic kidney disease (CKD) is an independent risk factor for atrial fibrillation (AF), which is more prevalent among CKD patients than the general population. AF causes stroke or systemic embolism, leading to increased mortality. The conventional antithrombotic prophylaxis agent warfarin is often prescribed for the prevention of stroke, but risk of bleeding necessitates regular therapeutic monitoring. Recently developed direct oral anticoagulants (DOAC) are expected to be useful as alternatives to warfarin...
November 6, 2017: Cochrane Database of Systematic Reviews
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