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https://www.readbyqxmd.com/read/29792965/characterization-sulfated-modification-and-bioactivity-of-a-novel-polysaccharide-from-millettia-dielsiana
#1
Zhonghua Wang, Tongqiang Cai, Xipu He
Millettia dielsiana is a traditional herb medicine to treat rheumatic arthritis and gynecological diseases. In this study, a novel polysaccharide (MDP1) with a molecular weight of 139.54 kDa was isolated from Millettia dielsiana by DEAE-52 cellulose chromatography. Its sulfated derivative (S-MDP1) was prepared by the chlorosulfonic acid-pyridine method. Structural analysis indicated that MDP1 was a pectic polysaccharide and did not exhibit a triple helical conformation. In vitro, MDP1 and S-MDP1 had protective effect on H2 O2 -induced PC12 cells death...
May 21, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29787913/modulating-the-degree-of-fucosylation-of-fucosylated-chondroitin-sulfate-enhances-heparin-cofactor-ii-dependent-thrombin-inhibition
#2
Li Xu, Na Gao, Chuang Xiao, Lisha Lin, Steven W Purcell, Mingyi Wu, Jinhua Zhao
Fucosylated chondroitin sulfate (FCS), an unusual glycosaminoglycan with fucose side chains, is a promising anticoagulant agent. To assess the effect of its structure on anticoagulant activity, its derivatives with various degrees of fucosylation (DF), molecular weights (Mw) and sulfation patterns were prepared and characterized. Biological tests showed that their APTT (activated partial thromboplastin time) prolonging activity and intrinsic factor Xase complex (factor IXa-VIIIa-Ca2+ -PL complex) inhibitory activity were both reduced in FCS derivatives with lower Mw and DF...
May 15, 2018: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29786530/meta-analysis-of-safety-and-efficacy-of-oral-anti-coagulants-in-patients-requiring-catheter-ablation-for-atrial-fibrillation
#3
Hammad Rahman, Safi U Khan, Michael DePersis, Tehseen Hammad, Fahad Nasir, Edo Kaluski
BACKGROUND: The ideal oral anticoagulant agent during catheter ablation (CA) for atrial fibrillation (AF) remained unclear. HYPOTHESIS: Novel oral anticoagulants (NOACs) are safer and effective compared to uninterrupted vitamin K antagonists (U-VKA) among patients requiring CA for AF. METHODS: Four randomized controlled trials (RCTs) and 9 observational studies (OS) were selected using PubMed/Medline, EMBASE and the CENTRAL data bases (Inception-December-2017)...
May 9, 2018: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29782263/-nonvalvular-atrial-fibrillation-and-diabetic-nephropathy-epidemiology-prognosis-and-choice-of-anticoagulant-therapy
#4
N A Koziolova, E A Polyanskaya, M V Surovtseva, P G Karavaev
In this review we present data on prevalence of atrial fibrillation (AF) among patients with type 2 diabetes (T2D), diabetic nephropathy and chronic kidney disease (CKD). Patients with nonvalvular AF and T2D combined with CKD have elevated risk of both bleeding and thromboembolic complications, as well as of all cause death. Efficacy and safety of novel oral anticoagulants (NOAC) depend on comorbidities and can be determined by the presence of T2D and/or diabetic nephropathy. Use of warfarin in CKD in some cases provides no preventive effect relative to risk of stroke and is characterized by increased risk of bleeding because of poor INR control, and possibly development of calcification of arteries...
April 2018: Kardiologiia
https://www.readbyqxmd.com/read/29782261/-chronic-kidney-disease-as-basis-of-high-thrombotic-and-bleeding-risk-in-patients-with-atrial-fibrillation-place-of-oral-anticoagulants
#5
A G Obrezan, A Y Zemchenkov
Chronic kidney disease (CKD) aggravates course of practically all diseases by worsening outcomes and hindering adequate treatment. Specificities of renal excretion of various drugs, changes of parameters of their pharmacokinetics and pharmacodynamics, nephrotoxic effects of drugs, tactics of drug therapy in conditions of CKD, terminal stage of kidney failure and dialysis are in the focus of attention of internists. To a greatest degree difficulties of drug therapy in CKD and associated clinical states refer to the group of anticoagulants...
April 2018: Kardiologiia
https://www.readbyqxmd.com/read/29774789/novel-nonsurgical-treatment-of-intractable-bleeding-in-hemorrhoid-patients-on-anticoagulants
#6
Pankaj Garg
No abstract text is available yet for this article.
May 1, 2018: Surgical Innovation
https://www.readbyqxmd.com/read/29770793/pulmonary-embolism
#7
REVIEW
Menno V Huisman, Stefano Barco, Suzanne C Cannegieter, Gregoire Le Gal, Stavros V Konstantinides, Pieter H Reitsma, Marc Rodger, Anton Vonk Noordegraaf, Frederikus A Klok
Pulmonary embolism (PE) is caused by emboli, which have originated from venous thrombi, travelling to and occluding the arteries of the lung. PE is the most dangerous form of venous thromboembolism, and undiagnosed or untreated PE can be fatal. Acute PE is associated with right ventricular dysfunction, which can lead to arrhythmia, haemodynamic collapse and shock. Furthermore, individuals who survive PE can develop post-PE syndrome, which is characterized by chronic thrombotic remains in the pulmonary arteries, persistent right ventricular dysfunction, decreased quality of life and/or chronic functional limitations...
May 17, 2018: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/29767545/pharmacogenetics-of-novel-oral-anticoagulants-a-review-of-identified-gene-variants-future-perspectives
#8
Adna Ašić, Damir Marjanović, Jure Mirat, Dragan Primorac
Novel oral anticoagulants (NOACs) are becoming a therapy of choice in everyday clinical practice after almost 50 years during which warfarin and related coumarin derivatives were used as the main anticoagulants. Advantages of NOACs over standard anticoagulants include their predictable pharmacodynamics and pharmacokinetics, stable plasma concentrations and less drug-drug and food-drug interactions. However, pharmacogenetics has its place in administration of NOACs, as considerable interindividual variations have been detected...
May 16, 2018: Personalized Medicine
https://www.readbyqxmd.com/read/29759666/patients-with-atrial-fibrillation-who-are-not-on-anticoagulant-treatment-due-to-increased-bleeding-risk-are-common-and-have-a-high-risk-of-stroke
#9
Björn Redfors, William A Gray, Randall J Lee, Kenneth A Ellenbogen, Machaon Bonafede, Ori Ben-Yehuda
OBJECTIVES: This study sought to determine how many patients with atrial fibrillation (AF) are not treated with oral anticoagulants (OAC) due to a high risk of bleeding and to characterize their risk of ischemic stroke in a real-world setting. BACKGROUND: AF is associated with a 5-fold increased risk of ischemic stroke. OAC reduce the risk of stroke in patients with AF who do not have an increased bleeding risk, but no comparably effective treatment exists for patients with contraindications to OAC...
December 11, 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29754667/is-there-a-role-for-pharmacokinetic-pharmacodynamic-guided-dosing-for-novel-oral-anticoagulants
#10
REVIEW
Noel Chan, Philip T Sager, Jack Lawrence, Thomas's Ortel, Paul Reilly, Scott Berkowitz, Dagmar Kubitza, John Eikelboom, Jeffry Florian, Norman Stockbridge, Martin Rose, Robert Temple, Jonathan H Seltzer
The novel direct oral anticoagulants (NOACs) represent a major advance in oral anticoagulant therapy and are replacing vitamin K antagonists as the preferred options for many indications. Given in fixed doses without routine laboratory monitoring, they have been shown to be at least as effective in reducing thromboembolic stroke as dose-adjusted warfarin in phase 3 randomized trials and less likely to cause hemorrhagic stroke. Pharmacokinetic and/or pharmacodynamic subanalyses of the major NOAC trials in patients with atrial fibrillation have established relationships between clinical characteristics, and drug levels and/or pharmacodynamic responses with both efficacy and safety...
May 2018: American Heart Journal
https://www.readbyqxmd.com/read/29744595/synthesis-and-biocompatibility-of-an-argatroban-modified-polysulfone-membrane-that-directly-inhibits-thrombosis
#11
Xiao Fu, Jian-Ping Ning
Anticoagulation therapy plays a vital role in the prevention of blood clot formation during hemodialysis and hemofiltration, especially for critical care patients. Here, we synthesized a novel argatroban (Arg)-modified polysulfone (PSf) membrane for anticoagulation. Arg was grafted onto the PSF membrane via chemical modification to increase membrane hydrophilicity. Protein adsorption, coagulation, as well as activation of platelets and complement systems were greatly reduced on the Arg-modified PSf membrane...
May 9, 2018: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/29743994/approaches-to-left-atrial-appendage-closure-device-design-performance-and-limitations
#12
REVIEW
Amish S Dave, Miguel Valderrábano
Up to 6.1 million people in the United States have atrial fibrillation (AF), which is associated with an increased risk of stroke. Oral anticoagulants are the mainstay of stroke prevention in AF. For decades, warfarin was the only available drug, fraught with compliance limitations, a narrow therapeutic window, and a high risk of hemorrhage. Pharmacologic developments have produced new anticoagulants that have improved the rates of stroke related to AF; however, they still confer a high risk of bleeding, making them unsuitable for some patients...
July 2017: Methodist DeBakey Cardiovascular Journal
https://www.readbyqxmd.com/read/29743683/rivaroxaban-does-not-influence-hemorrhagic-transformation-in-a-diabetes-ischemic-stroke-and-endovascular-thrombectomy-model
#13
Feng-Di Liu, Rong Zhao, Xiao-Yan Feng, Yan-Hui Shi, Yi-Lan Wu, Xiao-Lei Shen, Ge-Fei Li, Yi-Sheng Liu, Ying Zhao, Xin-Wei He, Jia-Wen Yin, Mei-Ting Zhuang, Bing-Qiao Zhao, Jian-Ren Liu
Managing endovascular thrombectomy (ET) in diabetic ischemic stroke (IS) with novel anticoagulants is challenging due to putative risk of intracerebral hemorrhage. The study evaluates increased hemorrhagic transformation (HT) risk in Rivaroxaban-treated diabetic rats post ET. Diabetes was induced in male Sprague-Dawley rats by intraperitoneal injection of 60 mg/kg streptozotocin. After 4-weeks, rats were pretreated orally with 30 mg/kg Rivaroxaban/saline; prothrombin time was monitored. IS and ET was induced after 1 h, by thread-induced transient middle cerebral artery occlusion (tMCAO) that mimicked mechanical ET for proximal MCA occlusion at 60 min...
May 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29742732/recurrent-pulmonary-embolism-associated-with-deep-venous-thrombosis-diagnosed-as-protein-s-deficiency-owing-to-a-novel-mutation-in-pros1-a-case-report
#14
Xiaojie Huang, Fangfang Xu, Carmel Rebecca Assa, Laigen Shen, Bing Chen, Zhenjie Liu
RATIONALE: Protein S (PS) deficiency that can be inherited or acquired is an independent risk factor for venous thromboembolism (VTE). PATIENT CONCERNS: In this report, we present a case of recurrent pulmonary embolism (PE) and deep venous thrombosis (DVT) due to PS deficiency. DIAGNOSES: A 32-year-old male patient with significant decrease in PS activity was detected by laboratory tests. Genetic examination of the PROS1 gene showed a transition of G to T in exon 14 (c...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29741099/economic-evaluation-of-prescribing-conventional-and-newer-oral-anticoagulants-in-older-adults
#15
Syed Shahzad Hasan, Chia Siang Kow, Louise E Curley, Darrin L Baines, Zaheer-Ud-Din Babar
Anticoagulants refer to a variety of agents that inhibit one or more steps in the coagulation cascade. Generally, clinical conditions that require the prescribing of an oral anticoagulant increase in frequency with age. However, a major challenge of anticoagulation use among older patients is that this group of patients also experience the highest bleeding risk. To date, economic evaluation of prescribing of anticoagulants that includes the novel or newer oral anticoagulants (NOACs) in older adults has not been conducted and is warranted...
May 9, 2018: Expert Review of Pharmacoeconomics & Outcomes Research
https://www.readbyqxmd.com/read/29738377/proton-pump-inhibition-in-patients-treated-with-novel-antithrombotic-drugs-should-we-worry-about-thrombosis
#16
Tomáš Bolek, Matej Samoš, Ingrid Škorňová, Frantisek Kovář, Peter Galajda, Ján Stasko, Peter Kubisz, Marián Mokáň
Proton pump inhibition (PPI) administrated together with antiplatelet and anticoagulant agents reduces the risk of gastrointestinal hemorrhage. Several novel antithrombotic agents have been recently introduced for acute coronary syndrome patients (prasugrel, ticagrelor), or for patients requiring long-term anticoagulation (dabigatran, rivaroxaban, apixaban, edoxaban, betrixaban). In fact, these agents might offer even stronger inhibition of platelets or coagulation compared with older agents; and therefore, the need for gastroprotection might be even stronger when these new agents are used for long-term antithrombotic therapy...
April 24, 2018: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/29727892/hemostasis-during-extreme-exertion
#17
Cécile Hélène Kicken, Adam Miszta, Hilde Kelchtermans, Bas De Laat
Exercise is protective against cardiovascular disease, but can also provoke sudden cardiac death, a phenomenon referred to as "the exercise paradox." Extreme exertion is known to induce a rebalanced hemostatic state by causing hypercoagulability and concomitantly enhanced fibrinolysis. Over the past decade, novel techniques for quantifying hemostasis have been introduced, which may provide new insights into this process. This review summarizes recent literature on the effect of extreme exertion of both short and long duration on coagulation, fibrinolysis, and recovery of hemostatic balance...
May 4, 2018: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/29710637/anticoagulant-rodenticide-use-non-target-impacts-and-regulation-a-case-study-from-australia
#18
REVIEW
Michael T Lohr, Robert A Davis
The impacts of anticoagulant rodenticides (ARs) on non-target wildlife have been well documented in Europe and North America. While these studies are informative, patterns of non-target poisoning of wildlife elsewhere in the world may differ substantially from patterns occurring in Australia and other countries outside of cool temperate regions due to differences in the types of ARs used, patterns of use, legislation governing sales, and potential pathways of secondary exposure. Most of these differences suggest that the extent and severity of AR poisoning in wildlife may be greater in Australia than elsewhere in the world...
September 1, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29710007/-approach-to-practical-training-in-basic-clinical-pharmacy-for-third-year-pharmacy-students-literature-appraisal-and-professional-writing
#19
Ryuichi Ogawa
 Training pharmacy students to become future clinical pharmacists is an important mission in the 6-year school of pharmacy curriculum in Japan. Since 2014, we have conducted an on-campus practical training program to develop basic skills in clinical pharmacy for third-year pharmacy students at Meiji Pharmaceutical University. This training program includes searching for and retrieving drug information; interpretation of laboratory findings, vital signs, and physical examinations; literature appraisal; and professional writing...
2018: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/29707095/a-case-of-a-reversible-neurologic-adverse-reaction-to-apixaban-confirmed-by-re-challenge
#20
James A Josyln, Furqan H Khattak, Stephen A Geraci
Post-marketing reporting of adverse drug events is essential for new medications, as pre-FDA approval studies lack sufficient subject numbers to detect signals for rare events. Prescriptions for the novel oral anticoagulant factor Xa inhibitors (rivaroxaban, apixaban, edoxaban) have equaled or exceeded those for vitamin K antagonists in many clinical settings requiring chronic anticoagulation, and those of injectable heparins for deep vein thrombosis prophylaxis. We report the case of a 60-year-old woman followed for permanent atrial fibrillation who was prescribed apixaban...
June 2018: Journal of Clinical Medicine Research
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