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Novel anticoagulants

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https://www.readbyqxmd.com/read/29166373/pilot-study-of-novel-lab-methodology-and-testing-of-platelet-function-in-adolescent-women-with-heavy-menstrual-bleeding
#1
Anne D Rocheleau, Ayesha Khader, Anh T P Ngo, Colin Boehnlein, Cara McDavitt, Susan Lattimore, Michael Recht, Owen J T McCarty, Kristina M Haley
INTRODUCTION: Approximately 40% of adolescent women experience heavy menstrual bleeding (HMB), and 10-62% of them have an underlying bleeding disorder (BD). Diagnosing BD remains challenging due to limitations of available clinical platelet function assays. AIM: To characterize platelet function in a population of adolescent women with HMB using small-volume whole blood assays. METHODS: Anticoagulated whole blood was used to assess platelet GPIIbIIIa activation, α-granule secretion, and aggregation in response to multiple agonists...
November 22, 2017: Pediatric Research
https://www.readbyqxmd.com/read/29164916/age-and-gender-differences-in-medical-adherence-after-myocardial-infarction-women-do-not-receive-optimal-treatment-the-netherlands-claims-database
#2
Daniëlle C Eindhoven, Alexander D Hilt, Thomas C Zwaan, Martin J Schalij, C Jan Willem Borleffs
Background Following myocardial infarction, medication is, besides lifestyle interventions, the cornerstone treatment to improve survival and minimize the occurrence of new cardiovascular events. Still, data on nationwide medication adherence are scarce. This study assesses medical adherence during one year following myocardial infarction, stratifying per type of infarct, age and gender. Design Retrospective cohort study. Methods In The Netherlands, all inhabitants are by law obliged to have health insurance and all claims data are centrally registered...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/29164426/the-impact-of-vascular-disease-treatment-on-platelet-derived-microvesicles
#3
Justyna Rosińska, Maria Łukasik, Wojciech Kozubski
Platelet-derived microvesicles (pMVs) are small, heterogeneous vesicles released from platelet membranes as a result of activation. These microvesicles possess a wide range of properties, including prothrombotic, proatherogenic, proinflammatory, immunomodulatory, and even anticoagulant activity. The elevated release of these microvesicles has been observed in various metabolic, inflammatory, thrombotic, and vascular diseases, including ischemic heart disease, stroke, hypertension, diabetes, and connective tissue disease...
November 22, 2017: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/29162770/correlation-of-the-blood-test-results-obtained-between-assays-using-microliter-scale-fingertip-blood-samples-collected-with-a-novel-blood-collection-device-and-conventional-venous-blood-assays-a-secondary-publication-in-english
#4
Hajime Iwasawa, Tomoaki Nishimura, Shota Nemoto, Naoki Aikawa, Kiyoaki Watanabe
In this study, we investigated the correlations between biochemical and hematological test results obtained using microliter-scale fingertip blood samples collected with a newly developed blood collection device and those obtained using conventional venous blood. Eighty volunteer subjects were enrolled in this study. Blood samples were drawn from the fingertip of the ring finger by a single puncture, and 60-µL samples were promptly and accurately aspirated into a blood collection chip. Then the chip was tightly sealed in a chip container and was shaken to mix the contents without dispersion...
November 21, 2017: Keio Journal of Medicine
https://www.readbyqxmd.com/read/29162159/pulsed-electron-avalanche-knife-peak-plasmablade%C3%A2-in-pacemaker-and-defibrillator-procedures
#5
Elif Kaya, Matthias Totzeck, Tienush Rassaf
BACKGROUND: The pulsed electron avalanche knife (PEAK) PlasmaBlade™ is an innovative electrosurgical device that uses a novel technology to cut tissues. It has been proven to be safe and feasible in ear, nose, and throat surgery, but there are only limited data concerning the use of PlasmaBlade™ instead of conventional electrocautery in cardiac implantable electronic device (CIED) procedures except for generator replacements. METHODS: We conducted a retrospective, single-center study with patients undergoing CIED surgery at our center between December 2015 and March 2017 and evaluate the feasibility and the clinical outcome of the PlasmaBlade™...
November 21, 2017: European Journal of Medical Research
https://www.readbyqxmd.com/read/29158017/left-atrial-appendage-occlusion-exclusion-procedural-image-guidance-with-transesophageal-echocardiography
#6
REVIEW
Alan F Vainrib, Serge C Harb, Wael Jaber, Ricardo J Benenstein, Anthony Aizer, Larry A Chinitz, Muhamed Saric
Atrial fibrillation is the most common arrhythmia worldwide and is a major risk factor for embolic stroke. In this article, the authors describe the crucial role of two- and three-dimensional transesophageal echocardiography in the pre- and postprocedural assessment and intraprocedural guidance of percutaneous left atrial appendage (LAA) occlusion procedures. Although recent advances have been made in the field of systemic anticoagulation with the novel oral anticoagulants, these medications come with a significant risk for bleeding and are contraindicated in many patients...
November 17, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/29149708/photodegradation-of-novel-oral-anticoagulants-under-sunlight-irradiation-in-aqueous-matrices
#7
Montaha Yassine, Laura Fuster, Marie-Hélène Dévier, Emmanuel Geneste, Patrick Pardon, Axelle Grélard, Erick Dufourc, Mohamad Al Iskandarani, Selim Aït-Aïssa, Jeanne Garric, Hélène Budzinski, Patrick Mazellier, Aurélien S Trivella
Kinetics of photodegradation of novel oral anticoagulants dabigatran, rivaroxaban, and apixaban were studied under simulated solar light irradiation in purified, mineral, and river waters. Dabigatran and rivaroxaban underwent direct photolysis with polychromatic quantum yields of 2.2 × 10(-4) and 4.4 × 10(-2), respectively. The direct photodegradation of apixaban was not observed after 19 h of irradiation. Kinetics of degradation of rivaroxaban was not impacted by the nature of the aqueous matrix while photosensitization from nitrate ions was observed for dabigatran and apixaban dissolved in a mineral water...
November 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/29149516/feasibility-of-percutaneous-left-atrial-appendage-closure-using-a-novel-lambre-occluder-in-patients-with-atrial-fibrillation-initial-results-from-a-prospective-cohort-registry-study
#8
Shaojie Chen, Boris Schmidt, Stefano Bordignon, Fabrizio Bologna, Takahiko Nagase, Nikolaos Tsianakas, Laura Perrotta, K R Julian Chun
BACKGROUND: The LAmbreۛ occluder is a novel device for percutaneous left atrial appendage closure (LAAC). The presented study aimed to report the initial experience in implantation of the novel LAmbre for LAAC in patients with non-valvular AF. METHODS: We conducted a prospective, observational, cohort registry study to evaluate the feasibility of percutaneous LAAC using the LAmbre occlude. RESULTS: Thirty patients (15 female, mean age 77...
November 17, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29145930/assessment-of-predicted-rate-and-associated-factors-of-dabigatran-induced-bleeding-events-in-malaysian-patients-with-non-valvular-atrial-fibrillation
#9
Semira Abdi Beshir, Lok Bin Yap, Szyuin Sim, Kok Han Chee, Yoke Lin Lo
PURPOSE: To assess the predicted rate and the factors associated with bleeding events among patients with non-valvular atrial fibrillation (NVAF) receiving dabigatran therapy. METHODS: This retrospective cohort study includes adult patients of two tertiary hospitals in Malaysia. Potential study subjects were identified using pharmacy supply database or novel oral anticoagulant (NOAC) registry. Demographics, clinical data and laboratory test results were extracted from the medical records of the patients or electronic databases...
2017: Journal of Pharmacy & Pharmaceutical Sciences: a Publication of the Canadian Society for Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29140870/a-retrospective-assessment-of-postoperative-bleeding-complications-in-anticoagulated-patients-following-mohs-micrographic-surgery
#10
Robert E Eilers, Alina Goldenberg, Natasha L Cowan, Pallavi Basu, Shang I Brian Jiang
BACKGROUND: A significant number of patients undergoing Mohs micrographic surgery (MMS) for skin cancer are treated with oral anticoagulants. The incidence of postoperative complications associated with new classes of oral anticoagulants remains largely unknown. OBJECTIVE: To determine the incidence of postoperative complications in patients undergoing MMS on both traditional oral anticoagulants and new novel oral anticoagulants. MATERIALS AND METHODS: A single-center retrospective chart review was performed for all patients treated with oral anticoagulants who underwent MMS between July 1, 2012 and June 30, 2015 at University of California, San Diego...
November 14, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
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/29136827/biobarcode-assay-for-the-oral-anticoagulant-acenocoumarol
#12
Marta Broto, J Pablo Salvador, Roger Galve, M Pilar Marco
A novel approach for therapeutic drug monitoring of oral anticoagulants (OA) in clinical samples is reported, based on a NP-based biobarcode assay. The proposed strategy uses specific antibodies for acenocumarol (ACL) covalently bound to magnetic particles (pAb236-MP) and a bioconjugate competitor (hACL-BSA) linked to encoded polystyrene probes (hACL-BSA-ePSP) on a classical competitive immunochemical format. By using this scheme ACL can be detected in low nM range (LOD, 0.96 ± 0.26, N = 3, in buffer) even in complex samples such as serum or plasma (LOD 4 ± 1)...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29131431/synthesis-of-fucosylated-chondroitin-sulfate-glycoclusters-a-robust-route-to-novel-anticoagulant-agents
#13
Xiao Zhang, Wang Yao, Xiaojiang Xu, Huifang Sun, Jinhua Zhao, Xiangbao Meng, Mingyi Wu, Zhongjun Li
Fucosylated chondroitin sulfate (FuCS) is a structurally distinct glycosaminoglycan with excellent anticoagulant activity. Studies show that FuCS and its depolymerized fragments exhibit different anticoagulant mechanism from heparin derivatives, with decreased risks of adverse effects and bleeding. However, further exploitation has been hindered by the scarcity of structurally defined oligosaccharides. Herein we report a facile method to synthesize the repeating trisaccharide unit of FuCS based on the degradation of chondroitin sulfate polymers...
November 13, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29129259/comparison-of-prevalence-and-management-of-left-atrial-appendage-thrombi-under-old-and-new-anticoagulants-prior-to-left-atrial-catheter-ablation
#14
Antoine Da Costa, Clarisse Delolme, Jean Baptiste Guichard, Antoine Gerbay, Romain Pierrard, Cécile Romeyer-Bouchard, Karl Isaaz
BACKGROUND: The prevalence and management of left atrial appendage (LAA) thrombi associated with new anticoagulants remain to be elucidated, especially prior to atrial fibrillation (AFib) ablation. This study sought to (1) compare the prevalence of LAA thrombi and/or severe LAA contrast under vitamin K antagonist (VKA) agents and novel oral anticoagulants (NOACs), (2) evaluate the rate of LAA thrombus resolution after anticoagulation modification, and (3) determine the predictive factors of LAA thrombi and severe LAA contrast in patients prior to LA AFib ablation...
November 2017: American Heart Journal
https://www.readbyqxmd.com/read/29126908/a-novel-formulation-of-6-gingerol-proliposomes-with-enhanced-oral-bioavailability-and-antitumor-effect
#15
Qilong Wang, Qiuyu Wei, Qiuxuan Yang, Xia Cao, Qiang Li, Feng Shi, Shan Shan Tong, Chunlai Feng, Qingtong Yu, Jiangnan Yu, Ximing Xu
[6]-Gingerol, one of the components of the rhizome of Ginger, has a variety of biological activities such as anticoagulant, antioxidative, antitumor, anti-inflammatory, antihypertensive, and so forth. However, as one of the homologous phenolic ketones, [6]-gingerol is insoluble in water which limits its applications. Herein, we prepared [6]-gingerol proliposomes through modified thin-film dispersion method, which was spherical or oval, and physicochemically stable with narrow size distribution. Surprisingly, in vitro release of [6]-gingerol loaded proliposome compared with the free [6]-gingerol was significantly higher and its oral bioavailability increased 5-fold in vivo...
November 7, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29125921/management-of-anticoagulation-in-patients-with-prostate-cancer-receiving-enzalutamide
#16
Joseph J Shatzel, Molly M Daughety, Sven R Olson, Tomasz M Beer, Thomas G DeLoughery
Enzalutamide, a novel, oral androgen receptor antagonist used for the treatment of metastatic, castration-resistant prostate cancer, has been shown to improve overall and progression-free survival, prolong time to initiation of chemotherapy, reduce skeletal-related events, and carry a favorable adverse effect profile. Metastatic prostate cancer is a disease of older men, a population with an increased incidence of medical comorbidities warranting anticoagulation. Prostate cancer itself, along with some of its therapies, is also prothrombotic...
November 2017: Journal of Oncology Practice
https://www.readbyqxmd.com/read/29125171/nanomechanical-clinical-coagulation-diagnostics-and-monitoring-of-therapies
#17
Francesco Padovani, James Duffy, Martin Hegner
Clinical coagulation diagnostics often requires multiple tests. Coagulation times are a first indication of an abnormal coagulation process, such as a coagulation factor deficiency. To determine the specific deficient factor, additional immuno- and/or enzyme assays are necessary. Currently, every clinical laboratory has to normalize their assays (international normalized ratio, INR), and therefore, certain variability within the clinical analytics exists. We report a novel strategy for a quick, reliable and quantitative diagnosis of blood coagulation diseases (e...
November 10, 2017: Nanoscale
https://www.readbyqxmd.com/read/29117993/an-update-on-the-bleeding-risks-associated-with-doacs
#18
(no author information available yet)
The direct oral anticoagulants (DOACs), also referred to as novel (or non-vitamin K antagonist) oral anticoagulants (NOACs), represent a major development in anticoagulation therapy due to their rapid onset of action, predictable dose-response with fixed doses and limited interactions with food and drugs.(1,2) However, these agents have been in widespread clinical use for less than a decade and, compared with extensive experience with warfarin, there is uncertainty relating to optimal laboratory monitoring of anticoagulation, perioperative management and treatment of bleeding...
November 2017: Drug and Therapeutics Bulletin
https://www.readbyqxmd.com/read/29115615/effects-of-dabigatran-regulates-no%C3%A2-reflow-phenomenon-in-acute-myocardial-infarction-mice-through-anti%C3%A2-inflammatory-and-anti%C3%A2-oxidative-activities-and-connective-tissue-growth-factor-expression
#19
Kunqing Song, Yanshan Wang, Jizhang Sheng, Chunmei Ma, Hongmei Li
Pradaxa is a novel oral anticoagulant, which was originally used to prevent thrombosis following joint replacement surgery. The aim of the current study was to investigate the effect dabigatran on acute myocardial infarction through regulating no‑reflow phenomenon and oxidative stress, neutrophil intraplaque infiltration and apoptosis. In the present study, dabigatran significantly inhibited the infarct size, increased arterial pressure and reduced no‑reflow phenomenon in acute myocardial infarction (AMI) vehicle rabbits...
October 25, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29112901/novel-method-for-the-determination-of-average-molecular-weight-of-natural-polymers-based-on-2d-dosy-nmr-and-chemometrics-example-of-heparin
#20
Yulia B Monakhova, Bernd W K Diehl, Tung X Do, Margit Schulze, Steffen Witzleben
Apart from the characterization of impurities, the full characterization of heparin and low molecular weight heparin (LMWH) also requires the determination of average molecular weight, which is closely related to the pharmaceutical properties of anticoagulant drugs. To determine average molecular weight of these animal-derived polymer products, partial least squares regression (PLS) was utilized for modelling of diffused-ordered spectroscopy NMR data (DOSY) of a representative set of heparin (n=32) and LMWH (n=30) samples...
November 4, 2017: Journal of Pharmaceutical and Biomedical Analysis
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