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Low molecular weight heparin

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https://www.readbyqxmd.com/read/29782806/analysis-of-sulfates-on-low-molecular-weight-heparin-using-mass-spectrometry-structural-characterization-of-enoxaparin
#1
Rohitesh Gupta, Moorthy P Ponnusamy
Structural characterization of Low Molecular Weight Heparin (LMWH) is critical to meet biosimilarity standards. In this context, the review focuses on structural analysis of labile sulfates attached to the side-groups of LMWH using mass spectrometry. A comprehensive review of this topic will help readers to identify key strategies for tackling the problem related to sulfate loss. At the same time, various mass spectrometry techniques are presented to facilitate compositional analysis of LMWH, mainly Enoxaparin...
May 21, 2018: Expert Review of Proteomics
https://www.readbyqxmd.com/read/29780621/thromboembolism-prophylaxis-in-orthopaedics-an-update
#2
Dimitrios A Flevas, Panayiotis D Megaloikonomos, Leonidas Dimopoulos, Evanthia Mitsiokapa, Panayiotis Koulouvaris, Andreas F Mavrogenis
Venous thromboembolism (VTE) is a serious complication during and after hospitalization, yet is a preventable cause of in-hospital death.Without VTE prophylaxis, the overall VTE incidence in medical and general surgery hospitalized patients is in the range of 10% to 40%, while it ranges up to 40% to 60% in major orthopaedic surgery. With routine VTE prophylaxis, fatal pulmonary embolism is uncommon in orthopaedic patients and the rates of symptomatic VTE within three months are in the range of 1.3% to 10%.VTE prophylaxis methods are divided into mechanical and pharmacological...
April 2018: EFORT Open Reviews
https://www.readbyqxmd.com/read/29780248/incidence-of-symptomatic-venous-thromboembolism-in-2372-knee-and-hip-replacement-patients-after-discharge-data-from-a-thromboprophylaxis-registry-in-montreal-canada
#3
Andréa Senay, Milanne Trottier, Josée Delisle, Andreea Banica, Benoit Benoit, G Yves Laflamme, Michel Malo, Hai Nguyen, Pierre Ranger, Julio C Fernandes
Background: Low-molecular-weight heparin (LMWH) is a recommended anticoagulant for thromboprophylaxis after major orthopedic surgery. Dabigatran etexilate is an oral anticoagulant recognized as noninferior to LMWH. We aimed to assess the incidence of symptomatic venous thromboembolic events (VTEs) after discharge in patients who underwent joint replacement, using a hospital registry. Patients and methods: Patients who underwent total knee and hip arthroplasty between September 2011 and March 2015 were selected...
2018: Vascular Health and Risk Management
https://www.readbyqxmd.com/read/29772489/prevention-of-venous-thromboembolism-in-pregnant-patients-with-a-history-of-venous-thromboembolic-disease-a-retrospective-cohort-study
#4
Alejandro Lazo-Langner, Fatimah Al-Ani, Sarah Weisz, Camilla Rozanski, Martha Louzada, Judy Kovacs, Michael J Kovacs
BACKGROUND: Optimal prophylactic strategies in pregnant women with a history of venous thromboembolism (VTE) are unknown. PATIENTS AND METHODS: We conducted a retrospective cohort study of consecutive pregnant patients with a previous VTE history. Patients were followed until 6 weeks postpartum. Patients with a previous unprovoked event (including antepartum VTE) received antenatal prophylaxis, mostly with low dose low molecular weight heparin (LMWH). All patients received prophylaxis for six weeks after delivery...
May 5, 2018: Thrombosis Research
https://www.readbyqxmd.com/read/29768734/in-vitro-efficacy-of-pro-and-anticoagulant-strategies-in-compensated-and-acutely-ill-patients-with-cirrhosis
#5
Ton Lisman, Simone Kleiss, Vishal C Patel, Caleb Fisher, Jelle Adelmeijer, Sarah Bos, Arjuna Singanayagam, Sidsel Hyldgaard Stoy, Debbie L Shawcross, William Bernal
BACKGROUND & AIMS: A simultaneous decline in pro- and anticoagulant drivers in patients with liver diseases results in a 'rebalanced' hemostatic system, even in acutely ill patients. Nevertheless, both bleeding and thrombotic events are common. Here, we explored efficacy of pro- and antihemostatic strategies in compensated and acutely ill cirrhotics which may be unpredictable given the profound hemostatic changes. METHODS: We tested the effects in vitro of the addition of clinically relevant doses of commonly used pro- and antihemostatic strategies in plasma from healthy individuals (n=30) and patients with compensated (n=18) and acutely decompensated cirrhosis (n=18), and acute-on-chronic liver failure (n=10)...
May 16, 2018: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/29768323/efficacy-and-risks-of-anticoagulation-for-cerebral-venous-thrombosis
#6
Weilin Xu, Liansheng Gao, Tao Li, Anwen Shao, Jianmin Zhang
BACKGROUND AND PURPOSE: Cerebral venous thrombosis (CVT) is a rare but life-threatening disease. Timely and proper treatments are the keys in saving patients' life and preventing from permanent neurological deficits. We performed this network meta-analysis to evaluate the role of anticoagulation in CVT, especially for the patients accompanied with hemorrhagic stroke. METHODS: PubMed, Embase, Web of Science, Cochrane Database, and Chinese Biomedical (CBM) databases were searched comprehensively to select eligible articles (up to 30 June 2017)...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29764885/compliance-with-current-vte-prophylaxis-guidelines-and-risk-factors-linked-to-complications-of-vte-prophylaxis-in-medical-inpatients-a-prospective-cohort-study-in-a-spanish-internal-medicine-department
#7
Ignacio Novo-Veleiro, Lucía Alvela-Suárez, Alba Costa-Grille, Javier Suárez-Dono, Fernando Ferrón-Vidan, Antonio Pose-Reino
OBJECTIVES: To evaluate the degree of compliance with the current guidelines regarding venous thromboembolism (VTE) prophylaxis in medical patients during admission and to identify risk factors linked to complications of VTE prophylaxis. DESIGN: Prospective cohort study. SETTING: The Internal Medicine Department of the University Hospital of Santiago de Compostela (tertiary referral hospital). PARTICIPANTS: A total of 396 hospitalised, elderly patients who did not undergo surgery and had no active or previous oral anticoagulation or low molecular weight heparin (LMWH) treatment (during the previous year) and who received VTE prophylaxis during admission...
May 14, 2018: BMJ Open
https://www.readbyqxmd.com/read/29750744/experience-and-prognosis-of-systemic-neonatal-thrombosis-at-a-level-iii-nicu
#8
Sevim Unal, Deniz Gönülal, Betül Siyah Bilgin, Vildan Koşan Çulha, Neşe Yarali
OBJECTIVE: The objective of this article was to evaluate neonates diagnosed systemic thrombosis and their outcomes. METHODS: We retrospectively evaluated data of neonatal systemic thrombosis between January 2011 and December 2016. RESULTS: Among 4376 hospitalized, 30 neonates (0.69%) were diagnosed systemic thrombosis. Their mean birth weight was 2422±1152 g (680 to 4750 g), gestational age was 35±5.4 weeks (25 to 41 wk). There were 25 neonates (83...
May 10, 2018: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29746227/comparison-of-an-oral-factor-xa-inhibitor-with-low-molecular-weight-heparin-in-patients-with-cancer-with-venous-thromboembolism-results-of-a-randomized-trial-select-d
#9
Annie M Young, Andrea Marshall, Jenny Thirlwall, Oliver Chapman, Anand Lokare, Catherine Hill, Danielle Hale, Janet A Dunn, Gary H Lyman, Charles Hutchinson, Peter MacCallum, Ajay Kakkar, F D Richard Hobbs, Stavros Petrou, Jeremy Dale, Christopher J Poole, Anthony Maraveyas, Mark Levine
Purpose Venous thromboembolism (VTE) is common in patients with cancer. Long-term daily subcutaneous low molecular weight heparin has been standard treatment for such patients. The purpose of this study was to assess if an oral factor Xa inhibitor, rivaroxaban, would offer an alternative treatment for VTE in patients with cancer. Patient and Methods In this multicenter, randomized, open-label, pilot trial in the United Kingdom, patients with active cancer who had symptomatic pulmonary embolism (PE), incidental PE, or symptomatic lower-extremity proximal deep vein thrombosis (DVT) were recruited...
May 10, 2018: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29741755/anti-tumoral-effects-of-low-molecular-weight-heparins-a-focus-on-the-treatment-of-esophageal-cancer
#10
REVIEW
Seyed Alireza Javadinia, Arezoo Gholami, Mona Joudi Mashhad, Gordon A Ferns, Soodabeh Shahidsales, Amir Avan, Ali Taghizadeh Kermani
Esophageal cancer is one of the most prevalent types of cancer globally. With current treatment options, the survival is poor, and there are ongoing efforts to find new and more efficient therapeutic approaches. There are several reports on the anti-tumoral effects of low-molecular-weight heparins (LMWH). We have assessed the possible survival benefits and underlying mechanisms of LMWHs in malignancies with a focus on esophageal cancer. We conclude that the effects of LMWHs on survival of cancer patients is probably due to a combination of direct anti-tumoral, anti-angiogenic, and immunomodulatory effects and indirect effects on the coagulation system...
May 9, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29738044/livedoid-vasculopathy-a-french-observational-study-including-therapeutic-options
#11
Emma Gardette, Philippe Moguelet, Jean-David Bouaziz, Dan Lipsker, Olivier Dereure, Francois Le Pelletier, Catherine Lok, Thierry Maisonobe, Didier Bessis, Jacqueline Conard, Camille Francès, Stéphane Barete
Livedoid vasculopathy is a rare thrombotic cutaneous disease. This observational study aimed to assess the clinical and biological features of livedoid vasculopathy and the efficacy of treatments. Patients enrolled had typical livedoid vasculopathy both clinically and histologically. Investigation of thrombophilia was performed. Electromyography was undertaken in the presence of symptoms suggesting peripheral neuropathy. 18 women and 8 men were included, with a mean age of 35.5 years at onset. 20 patients had at least one thrombophilia factor...
May 8, 2018: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/29737288/effect-of-different-types-of-anticoagulants-in-the-prevention-of-venous-thrombosis-in-the-operation-of-knee-joint-bone-operation
#12
Wensheng Xu, Tao Zhang, Zenghua Yang, Lin Nie
Deep venous thrombosis is one of the common complications after major surgery in the Department of Orthopedics. The selective knee replacement of the lower extremities is more likely to cause the occurrence of DVT. The most commonly used anticoagulants in the Department of Orthopedics now include low molecular weight heparin (LMWH), Rivaroxaban, ordinary heparin, aspirin and warfarin. At present, the clinical application of low molecular weight heparin is the most, and the effect is the most accurate. This study compared the efficacy and safety of three commonly used anticoagulants such as aspirin, LMWH and Rivaroxaban in preventing VTE after hip and knee arthroplasty, so as to provide a theoretical basis for selecting suitable anticoagulant drugs in clinic...
May 2018: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29735456/effect-of-different-types-of-anticoagulants-in-the-prevention-of-venous-thrombosis-in-the-operation-of-knee-joint-bone-operation
#13
Wensheng Xu, Tao Zhang, Zenghua Yang, Lin Nie
Deep venous thrombosis is one of the common complications after major surgery in the Department of Orthopedics. The selective knee replacement of the lower extremities is more likely to cause the occurrence of DVT. The most commonly used anticoagulants in the Department of Orthopedics now include low molecular weight heparin (LMWH), Rivaroxaban, ordinary heparin, aspirin and warfarin. At present, the clinical application of low molecular weight heparin is the most, and the effect is the most accurate. This study compared the efficacy and safety of three commonly used anticoagulants such as aspirin, LMWH and Rivaroxaban in preventing VTE after hip and knee arthroplasty, so as to provide a theoretical basis for selecting suitable anticoagulant drugs in clinic...
May 2018: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29733996/low-molecular-weight-heparin-for-the-prevention-of-deep-venous-thrombosis-after-total-knee-arthroplasty-a-systematic-review-and-meta-analysis
#14
REVIEW
Ze-Nan Xia, Qing Zhou, Wei Zhu, Xi-Sheng Weng
BACKGROUND: To systematically evaluate the prophylaxis efficacy of low-molecular-weight heparin (LMWH) in the prevention of deep venous thrombosis (DVT) after total knee arthroplasty (TKA). METHOD: PubMed, Cochrane, Embase, Wanfang, CNKI, and VIP databases were searched by index words to identify the eligible RCTs; relevant literature sources were also searched. The latest research was conducted in March 2017. Relative risks (RR), mean difference (MD), and their corresponding 95% confidence intervals (95% CIs) were used to analyze the main outcomes...
May 4, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29733637/anticoagulant-properties-of-poly-sodium-2-acrylamido-2-methylpropanesulfonate-based-di-and-triblock-polymers
#15
Bartlomiej Kalaska, Kamil Kamiński, Joanna Miklosz, Keita Nakai, Shin-Ichi Yusa, Dariusz Pawlak, Maria Nowakowska, Andrzej Mogielnicki, Krzysztof Szczubiałka
Di- and triblock copolymers with low dispersity of molecular weight were synthesized using radical addition-fragmentation chain transfer polymerization. The copolymers contained anionic poly(sodium 2-acrylamido-2-methylpropanesulfonate) (PAMPS) block as an anticoagulant component. The block added to lower the toxicity was either poly(ethylene glycol) (PEG) or poly(2-(methacryloyloxy)ethyl phosphorylcholine) (PMPC). The polymers prolonged clotting times both in vitro and in vivo. The influence of the polymer architecture and composition on the efficacy of anticoagulation and safety parameters was evaluated...
May 7, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29723895/anticancer-drug-related-nonvalvular-atrial-fibrillation-challenges-in-management-and-antithrombotic-strategies
#16
Antonella Tufano, Maurizio Galderisi, Luca Esposito, Valentina Trimarco, Daniela Sorriento, Guy Gerusalem, Marco Picardi, Patrizio Lancellotti, Fabrizio Pane
Cancer patients may experience nonvalvular atrial fibrillation (AF) as a manifestation of cardiotoxicity. AF may be a direct effect of a neoplasm or, more often, appear as a postsurgical complication, especially after thoracic surgery. AF may also develop as a consequence of anticancer therapy (chemotherapy or radiotherapy), a condition probably underestimated. Cancer patients with AF require a multidisciplinary approach involving oncologists/hematologists, cardiologists, and coagulation experts. An echocardiogram should be performed to detect possible abnormalities of left ventricular systolic and diastolic function, as well as left atrial dilation and the existence of valvular heart disease, to determine pretest probability of sinus rhythm restoration, and identify the best treatment...
May 3, 2018: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/29719413/intermittent-pneumatic-compression-is-a-cost-effective-method-of-orthopedic-postsurgical-venous-thromboembolism-prophylaxis
#17
Rhodri Saunders, Anthony J Comerota, Audrey Ozols, Rafael Torrejon Torres, Kwok Ming Ho
Background: Venous thromboembolism (VTE) is a major complication after lower-limb arthroplasty that increases costs and reduces patient's quality of life. Using anticoagulants for 10-35 days following arthroplasty is the standard prophylaxis, but its cost-effectiveness after accounting for bleeding complications remains unproven. Methods: A comprehensive, clinical model of VTE was created using the incidences, clinical effects (including bleeding), and costs of VTE and prophylaxis from randomized controlled trials, meta-analyses, and large observational studies...
2018: ClinicoEconomics and Outcomes Research: CEOR
https://www.readbyqxmd.com/read/29718846/high-risk-pulmonary-embolism-assessed-by-transthoracic-echocardiography-a-case-report
#18
Jiahong Wu, Jing Zhang, Fangfang Yang, Chuanbao Li, Mei Ni
RATIONALE: Acute pulmonary embolism (APE) as a life-threatening illness may present with a wide range of manifestations. APE was diagnosed using computed tomographic pulmonary angiography (CTPA); however, transthoracic echocardiography (TTE) can reveal hemodynamic status. Early thrombolysis is the most effective therapy for the treatment of massive pulmonary embolism. PATIENTS CONCERNS: Herein, we report a case of high-risk APE with a wide range of manifestations, including chest pain, dyspnea, low-blood pressure, and syncope...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29717364/acute-promyelocytic-leukemia-cell-adhesion-to-vascular-endothelium-is-reduced-by-heparins
#19
Alfonso Vignoli, Marina Marchetti, Anna Falanga
Adhesion of acute promyelocytic leukemia (APL) cells to endothelial cells (EC) is among the mechanisms of the APL-associated coagulopathy, responsible for early hemorrhagic deaths in affected patients. We compared the effects of dalteparin and enoxaparin, two low-molecular-weight heparins (LMWH), and unfractionated heparin (UFH), on APL NB4 adhesion to micro- (HMEC-1) and macro-vascular EC (HUVEC), in resting and interleukin-1β (IL-1β)-stimulated conditions. The heparin effect on EC adhesion molecule (ICAM-1, VCAM-1, E-selectin) expression was also assessed...
May 1, 2018: Annals of Hematology
https://www.readbyqxmd.com/read/29709455/the-approach-to-peripartum-management-of-anticoagulation-a-multidisciplinary-survey
#20
Sagar Rohailla, Ann Kinga Malinowski, Shital Gandhi, Anne McLeod, Rosane Nisenbaum, Nadine Shehata
OBJECTIVE: This study sought to determine whether there is practice variation in the treatment and prevention of acute venous thromboembolism (VTE) in pregnant patients, potentially to prioritize future studies. BACKGROUND: The risk of VTE during pregnancy is five-fold that of the non-pregnant state. Guidance is often lacking for the treatment and prophylaxis of VTE because there are few RCTs. METHODS: The study used a cross-sectional study design using a self-administered electronic questionnaire consisting of 11 case scenarios that were sent to hematologists, maternal-fetal medicine specialists, obstetricians and gynaecologists, and internal medicine specialists across Canada...
April 27, 2018: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
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