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Haemostatic

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https://www.readbyqxmd.com/read/28532176/synthesis-of-n-alkylated-chitosan-and-its-interactions-with-blood
#1
Yuchen Huang, Yi Zhang, Longbao Feng, Liumin He, Rui Guo, Wei Xue
When hydrophobically modified chitosan (HM-CHI) comes into contact with red blood cells (RBCs), it can cause agglomeration. This property leads HM-CHI to be a potential agent to form a rapid haemostatic plug to stop bleeding at wound sites. In this study, we investigated the properties of the HM-CHI biopolymer to act as an agent that rapidly clots blood. We have examined the synthesis and structural characteristics of HM-CHI - blood substances using X-ray diffraction, infrared spectroscopy and elemental analysis...
May 22, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28510738/pharmacokinetic-pharmacodynamic-model-for-unfractionated-heparin-dosing-during-cardiopulmonary-bypass
#2
X Delavenne, E Ollier, S Chollet, F Sandri, J Lanoiselée, S Hodin, A Montmartin, J-F Fuzellier, P Mismetti, L Gergelé
Background: High-dose heparin is used during cardiopulmonary bypass (CPB) to prevent thrombosis in the circuits used for extracorporeal circulation. The aim of this study was, initially, to develop a population pharmacokinetic/pharmacodynamic (PK/PD) model to assess the variability of PK/PD parameters and their correlation with the results of the routine haemostatic test activated clotting time (ACT) and thereafter to develop a Bayesian estimator enabling an individualized dosing strategy...
May 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28499509/ten-year-study-of-postoperative-complications-following-dental-extractions-in-patients-with-inherited-bleeding-disorders
#3
J-T Hsieh, K Klein, M Batstone
Dental extractions challenge the body's haemostatic mechanism. Postoperative bleeding from dental extraction can be prolonged, or even life threatening in patients with inherited bleeding disorders. Pre- and postoperative clotting factor replacements or systemic desmopressin (ddAVP) have been advocated at our institution to prevent bleeding complications in these patients. This study aimed to assess the postoperative bleeding rate in patients with inherited bleeding disorders that underwent dental extractions at our institution between 2003 and 2012...
May 9, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28492980/-haemostatic-management-in-postpartum-haemorrhage-nationwide-survey-in-germany
#4
L Kaufner, K Ghantus, A Henkelmann, U Friedrichs, K Weizsäcker, A Schiemann, C von Heymann
BACKGROUND: In order to ensure evidence-based haemostatic management of postpartum haemorrhage (PPH, blood loss >500 ml) consistent with guidelines appropriate structural conditions must be fulfilled regardless of different levels (1-3) in perinatal care. The aim of the survey was to identify differences in haemostatic management in PPH under consideration of the different levels of perinatal care in Germany. MATERIALS AND METHODS: An electronic questionnaire assessing the structural and therapeutic preconditions for haemostatic management was sent to 533 anaesthesiology departments serving obstetric units...
May 10, 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/28487256/lipopolysaccharide-lps-induced-pulmonary-neutrophil-recruitment-and-platelet-activation-is-mediated-via-the-p2y1-and-p2y14-receptors-in-mice
#5
R T Amison, S Arnold, B G O'Shaughnessy, S J Cleary, J Ofoedu, M Idzko, C P Page, S C Pitchford
Platelet activation occurs during host defence and in various inflammatory disorders. In animal models of infection and inflammation, experimental depletion of platelets leads to significantly reduced leukocyte recruitment and impaired clearance of pathogens from the lung. It is now appreciated that purinergic receptor activation is required for leukocyte activation, motility and adhesion, and platelet interactions with leukocytes can be modulated by purinergic stimulation of platelets. Here, we have investigated the role of platelet P2Y1, P2Y12, P2Y14, and P2X1 receptors on leukocyte recruitment and chemotaxis...
May 6, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28486646/altered-preoperative-coagulation-and-fibrinolysis-are-associated-with-myocardial-injury-after-non-cardiac-surgery
#6
J Górka, K Polok, T Iwaniec, K Górka, A Wludarczyk, J Fronczek, P J Devereaux, J W Eikelboom, J Musial, W Szczeklik
Background: Myocardial injury after non-cardiac surgery (MINS), a complication with unclear pathogenesis, occurs within the first 30 days after surgery and worsens prognosis. Hypercoagulability induced by surgery might contribute to plaque rupture, with subsequent thrombosis and myocardial injury. This study assessed haemostatic markers before surgery and evaluated their association with MINS. Methods: This is a substudy of VISION, a prospective cohort study of perioperative cardiovascular events...
May 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28477287/the-current-understanding-of-trauma-induced-coagulopathy-tic-a-focused-review-on-pathophysiology
#7
REVIEW
Stefano Giordano, Luca Spiezia, Elena Campello, Paolo Simioni
The emergency management of acute severe bleeding in trauma patients has changed significantly in recent years. In particular, greater attention is now being devoted to a prompt assessment of coagulation alterations, which allows for immediate haemostatic resuscitation procedures when necessary. The importance of an early trauma-induced coagulopathy (TIC) diagnosis has led physicians to increase the efforts to better understand the pathophysiological alterations observed in the haemostatic system after traumatic injuries...
May 5, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28472483/a-single-chain-antibody-cd39-fusion-protein-targeting-activated-platelets-protects-from-cardiac-ischaemia-reperfusion-injury
#8
Melanie Ziegler, Jan David Hohmann, Amy Kate Searle, Meike-Kristin Abraham, Harshal H Nandurkar, Xiaowei Wang, Karlheinz Peter
Aims: CD39 is a cell membrane NTPase with anti-inflammatory and anti-platelet effects. However, its clinical use is limited by its bleeding side effect. With the goal of harnessing its therapeutic potential while avoiding haemostatic problems, we designed a fusion protein consisting of the extracellular domain of CD39 and a single-chain antibody (Targ-CD39) that specifically binds to activated glycoprotein (GP)IIb/IIIa and thus to activated platelets. Through this enrichment at activated platelets, the required systemic dose is below the dose impairing haemostasis...
May 2, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28470862/first-report-on-the-safety-and-efficacy-of-an-extended-half-life-glycopegylated-recombinant-fviii-for-major-surgery-in-severe-haemophilia-a
#9
K Hampton, P Chowdary, S Dunkley, S Ehrenforth, L Jacobsen, A Neff, E Santagostino, J Sathar, H Takedani, C M Takemoto, C Négrier
BACKGROUND: N8-GP (turoctocog alfa pegol) is an extended half-life glycoPEGylated recombinant factor VIII (FVIII) product developed for the prevention and treatment of bleeds in haemophilia A patients. AIM: This is a planned interim analysis of pathfinder™3, an international, open-label, Phase 3 trial evaluating the efficacy and safety (including immunogenicity) of N8-GP administered before, during and after major surgery in severe haemophilia A patients aged ≥12 years...
May 4, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28469662/combination-therapy-using-evening-primrose-oil-and-electrical-stimulation-to-improve-nerve-function-following-a-crush-injury-of-sciatic-nerve-in-male-rats
#10
Omid Badri, Parviz Shahabi, Jalal Abdolalizadeh, Mohammad Reza Alipour, Hadi Veladi, Mehdi Farhoudi, Mohsen Sharif Zak
Peripheral nerve injuries with a poor prognosis are common. Evening primrose oil (EPO) has beneficial biological effects and immunomodulatory properties. Since electrical activity plays a major role in neural regeneration, the present study investigated the effects of electrical stimulation (ES), combined with evening primrose oil (EPO), on sciatic nerve function after a crush injury in rats. In anesthetized rats, the sciatic nerve was crushed using small haemostatic forceps followed by ES and/or EPO treatment for 4 weeks...
March 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28466601/adult-extracorporeal-membrane-oxygenation-an-international-survey-of-transfusion-and-anticoagulation-techniques
#11
S A Esper, I J Welsby, K Subramaniam, W John Wallisch, J H Levy, J H Waters, D J Triulzi, J W A Hayanga, G J Schears
BACKGROUND AND OBJECTIVES: Extracorporeal membrane oxygenation (ECMO) is a method of life support for either isolated cardiac failure or respiratory failure, with or without cardiac failure. When used for hemodynamic support, the ECMO circuit presents a non-endothelialized, artificial surface to blood inciting an inflammatory response which activates haemostatic pathways. Anticoagulation may complicate a pre-existing coagulopathy and/or inadequate surgical hemostasis of varying severity...
May 3, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28452886/platelet-transfusions-reduce-fibrinolysis-but-do-not-restore-platelet-function-during-trauma-hemorrhage
#12
Paul Vulliamy, Scarlett Gillespie, Lewis S Gall, Laura Green, Karim Brohi, Ross A Davenport
INTRODUCTION: Platelets play a critical role in hemostasis with aberrant function implicated in trauma-induced coagulopathy. However, the impact of massive transfusion protocols on platelet function during trauma hemorrhage is unknown. The aim of this study was to characterize the effects of platelet transfusion on platelet aggregation and fibrinolytic markers during hemostatic resuscitation. METHODS: Trauma patients enrolled into the prospective Activation of Coagulation and Inflammation in Trauma (ACIT) study between January 2008 and November 2015 who received at least four units of packed red blood cells (PRBCs) were included...
April 27, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28438758/diabetes-mellitus-and-acquired-haemophilia-new-association
#13
Carlos Tavares Bello, Yuliya Vasylenko, José Esteves, Carlos Augusto Vasconcelos
Diabetes mellitus encompasses a group of highly prevalent carbohydrate metabolic disorders with an increasing incidence. Some subtypes are thought to be associated with other immune-mediated diseases. Acquired haemophilia on the other hand is a quite rare autoimmune disease that is thought to be secondary to the emergence of inhibiting anticoagulation factor VIII antibodies (inhibitors) in patients with previously normal haemostatic function. More recently, numerous different diseases have been associated with acquired haemophilia namely immune-mediated diseases, drugs and solid and haematologic neoplasms...
April 24, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28437748/rational-and-timely-haemostatic-interventions-following-cardiac-surgery-coagulation-factor-concentrates-or-blood-bank-products
#14
Mariann Tang, Christian Fenger-Eriksen, Per Wierup, Jacob Greisen, Jørgen Ingerslev, Vibeke Hjortdal, Benny Sørensen
BACKGROUND: Cardiac surgery may cause a serious coagulopathy leading to increased risk of bleeding and transfusion demands. Blood bank products are commonly first line haemostatic intervention, but has been associated with hazardous side effect. Coagulation factor concentrates may be a more efficient, predictable, and potentially a safer treatment, although prospective clinical trials are needed to further explore these hypotheses. This study investigated the haemostatic potential of ex vivo supplementation of coagulation factor concentrates versus blood bank products on blood samples drawn from patients undergoing cardiac surgery...
April 5, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28428025/adipokines-as-atherothrombotic-risk-factors-in-obese-subjects-associations-with-haemostatic-markers-and-common-carotid-wall%C3%A2-thickness
#15
É Csongrádi, M Káplár, B Nagy, C A Koch, A Juhász, L Bajnok, Z Varga, I Seres, Z Karányi, M T Magyar, L Oláh, A Facskó, J Kappelmayer, G Paragh
BACKGROUND AND AIMS: Some crucial associations between obesity-related altered adipokine levels and the main factors of atherosclerotic, atherothrombotic processes are not fully known. We analysed the relationships of classic adipokines, namely leptin, resistin, adiponectin, tumour necrosis factor-alpha (TNF-α), interleukin 6 (IL-6) with the markers of platelet activation, including mean platelet volume (MPV), platelet surface/soluble P-selectin, platelet-derived microparticles (PMPs), the parameters of coagulation abnormalities and common carotid intima-media thickness (IMT) in obese patients with or without atherosclerotic comorbidities in comparison to age- and sex-matched controls...
March 8, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28425765/the-prevention-and-treatment-of-venous-thromboembolism-in-pregnancy
#16
Michela Villani, Walter Ageno, Elvira Grandone, Francesco Dentali
Venous thromboembolism (VTE) in pregnancy represents an important cause of maternal morbidity and mortality in developed countries, with an incidence of 0.5-2.2 per 1000 pregnancies. In addition to hemostatic changes occurring during normal pregnancy, several risk factors have been identified. Thus, a variety of clinical conditions as well as fetal and maternal risks linked to a possible anticoagulant therapy should be considered for the management of VTE during pregnancy. Unfortunately, there is a paucity of high-quality evidence from randomized trials in this field, and current recommendations are based on observational studies or evidence gathered from studies in the non-pregnant population...
May 2017: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/28425573/evaluation-of-australian-dermatological-postoperative-patient-information-leaflets-should-we-have-a-national-checklist
#17
William Tn Hunt, Niamh-Anna O'Sullivan, Alan Donnelly
BACKGROUND/OBJECTIVES: Patient information leaflets (PILs) are frequently provided to patients following dermatological surgery to provide advice and reassurance in the community. This evaluation reviewed the guidance specified in postoperative PILs across the 40 Australian dermatology teaching departments and clinics. METHODS: All 40 departments and clinics were identified and asked to provide their postoperative information leaflets on sutured wound care (preferable) or excision biopsy (September-October 2015)...
April 20, 2017: Australasian Journal of Dermatology
https://www.readbyqxmd.com/read/28425265/effects-of-ankaferd-bloodstopper-on-dermal-healing-in-diabetic-rats
#18
Sertaç Aktop, Burcu Çevreli, Deniz Genç, Emel Serdaroğlu Kaşikçi, Nil Çomunoğlu Üstündağ, Noushin Zibandeh, Elif Merve Özcan, Gökhan Göçmen, Mehmet Kamil Göker, İsmail Tayfun Uzbay, Tunç Akkoç
BACKGROUND/AIM: Diabetes mellitus inhibits wound-induced angiogenesis, impairs the wound healing process, and leads to the development of chronic wounds. Ankaferd BloodStopper (ABS) is a new and promising local haemostatic agent. Although the mechanism of ABS-mediated haemostasis is well established, little is known about the associated histological and biochemical tissue reactions. The aim of this study was to evaluate the effects of this new-generation local haemostatic agent on short-term soft-tissue healing in streptozotocin (STZ)-treated rats...
April 18, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28420167/treatment-and-prevention-of-bleeds-in-haemophilia-patients-with-inhibitors-to-factor-viii-ix
#19
REVIEW
Angiola Rocino, Massimo Franchini, Antonio Coppola
The development of alloantibodies neutralising therapeutically administered factor (F) VIII/IX (inhibitors) is currently the most severe complication of the treatment of haemophilia. When persistent and at a high titre, inhibitors preclude the standard replacement treatment with FVIII/FIX concentrates, making patients' management challenging. Indeed, the efficacy of bypassing agents, i.e., activated prothrombin complex concentrates (aPCC) and recombinant activated factor VII (rFVIIa), needed to overcome the haemostatic interference of the inhibitor, is not comparable to that of factor concentrates...
April 17, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28405125/panicker-s-vacuum-suction-haemostatic-device-for-treating-post-partum-haemorrhage
#20
REVIEW
T N Vasudeva Panicker
No abstract text is available yet for this article.
April 2017: Journal of Obstetrics and Gynaecology of India
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