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Recombinant factor viia

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https://www.readbyqxmd.com/read/28967418/recombinant-factor-viia-use-in-acute-type-a-aortic-dissection-repair-a-multicenter-propensity-score-matched-report-from-the-nordic-consortium-for-acute-type-a-aortic-dissection
#1
Igor Zindovic, Johan Sjögren, Anders Ahlsson, Henrik Bjursten, Simon Fuglsang, Arnar Geirsson, Richard Ingemansson, Emma C Hansson, Ari Mennander, Christian Olsson, Emily Pan, Susann Ullén, Tomas Gudbjartsson, Shahab Nozohoor
BACKGROUND: Surgery for acute type A aortic dissection (ATAAD) is often complicated by excessive bleeding. Recombinant factor VIIa (rFVIIa) effectively treats refractory bleeding associated with ATAAD surgery; however, adverse effects of rFVIIa in these patients have not been fully assessed. Here we evaluated rFVIIa treatment in ATAAD surgery using the Nordic Consortium for Acute Type A Aortic Dissection (NORCAAD) database. METHODS: This was a multicenter, propensity score-matched, retrospective study...
August 24, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28967415/take-me-to-your-bleeder-recombinant-factor-viia-finding-its-way-in-cardiac-surgery
#2
EDITORIAL
John Bozinovski
No abstract text is available yet for this article.
September 4, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28944952/bypassing-agent-prophylaxis-in-people-with-hemophilia-a-or-b-with-inhibitors
#3
REVIEW
Chatree Chai-Adisaksopha, Sarah J Nevitt, Mindy L Simpson, Maissaa Janbain, Barbara A Konkle
BACKGROUND: People with hemophilia A or B with inhibitors are at high risk of bleeding complications. Infusion of bypassing agents, such as recombinant activated FVII (rFVIIa) and plasma-derived activated prothrombin complex concentrate, are suggested as alternative therapies to factor VIII (haemophilia A) or IX (haemophilia B) for individuals who no longer respond to these treatments because they develop inhibitory antibodies. The ultimate goal of treatment is to preserve the individual's joints, otherwise destroyed by recurrent bleeds...
September 25, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28934884/effect-of-a-rapidly-degrading-presolidified-10-kda-chitosan-blood-implant-and-subchondral-marrow-stimulation-surgical-approach-on-cartilage-resurfacing-in-a-sheep-model
#4
Angela D Bell, Mark B Hurtig, Eric Quenneville, Georges-Étienne Rivard, Caroline D Hoemann
Objective This study tested the hypothesis that presolidified chitosan-blood implants are retained in subchondral bone channels perforated in critical-size sheep cartilage defects, and promote bone repair and hyaline-like cartilage resurfacing versus blood implant. Design Cartilage defects (10 × 10 mm) with 3 bone channels (1 drill, 2 Jamshidi biopsy, 2 mm diameter), and 6 small microfracture holes were created bilaterally in n = 11 sheep knee medial condyles. In one knee, 10 kDa chitosan-NaCl/blood implant (presolidified using recombinant factor VIIa or tissue factor), was inserted into each drill and Jamshidi hole...
October 2017: Cartilage
https://www.readbyqxmd.com/read/28934519/intra-pericardial-use-of-recombinant-factor-viia-in-a-patient-with-acute-hemorrhagic-pericardial-effusion-following-transcutaneous-aortic-valve-replacement-a-case-report
#5
Vanya Jaitly, Kimberly Klein, Hlaing Tint, Alice Chen, Paul Allison, Bindu Akkanti, Pranav Loyalka, Brian Castillo
Perioperative bleeding can be a serious life-threatening complication in adult patients undergoing cardiac surgery, given the older age and additional comorbidities present in this patient population. The standard treatment options include transfusion of blood components and surgical re-exploration. We report the first case of an elderly female patient treated with local administration of recombinant factor VIIa (rFVIIa) for intractable hemorrhagic pericardial effusion, which developed following a transcutaneous aortic valve replacement (TAVR) procedure for severe aortic stenosis...
August 1, 2017: Laboratory Medicine
https://www.readbyqxmd.com/read/28903884/successful-outcome-of-severe-intra-cerebral-bleeding-associated-with-acquired-factor-v-inhibition-utilization-of-multiple-therapeutic-agents
#6
Panagiotis Andreadis, Katerina Kafantari, Aleka Agapidou, Sofia Vakalopoulou, Efthymia Vlachaki
BACKGROUND: Acquired coagulation Factor inhibitors are antibodies that either inhibit the activity or increase the clearance of a clotting factor leading to an increased risk of bleeding. Most of the times, the disorder is attributed to Factor VIII inhibition (Acquired Hemophilia A), however other coagulation factors could also be implicated. CASE REPORT: We herein would like to report an interesting case of a patient who underwent Coronary Artery Bypass Graft and received antibiotic treatment after surgery with a third-generation cephalosporin...
September 13, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28889826/recombinant-factor-viia-as-a-rescue-therapy-in-severe-haemoptysis-in-a-patient-with-a-fontan-circulation
#7
Thomas W Mason, Andrew Retter, Gareth J Morgan
We describe the successful use of recombinant factor VIIa (rFVIIa) in the control of massive haemoptysis in a 17-year-old patient with a Fontan circulation. The patient was intubated and ventilated in the ICU with deteriorating gas exchange. Conventional methods to control the haemoptysis were ineffective, and rFVIIa was successfully administered as a rescue therapy. rFVIIa is a powerful pro-thrombotic agent, which is only licensed in haemophiliacs with acquired inhibitors to anticoagulation. It has been used off-license in the treatment of massive haemorrhage, although a Cochrane review did not show any significant benefit; however, it may have a role as a rescue therapy where alternatives options have been exhausted after careful risk-benefit analysis...
September 11, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/28789610/management-of-refractory-bleeding-post-cardiopulmonary-bypass-in-an-acute-heparin-induced-thrombocytopenia-type-ii-renal-failure-patient-who-underwent-urgent-cardiac-surgery-with-bivalirudin-angiox-%C3%A2-anticoagulation
#8
Kimberly Hassen, Maria R Maccaroni, Haytham Sabry, Smitangshu Mukherjee, Shankari Serumadar, Inderpaul Birdi
Acute heparin-induced thrombocytopenia (HIT) patients present a myriad of anticoagulation management challenges, in clinical settings where unfractionated heparin (UFH) is the traditional drug of choice. UFH use in cardiac surgery is a known entity that has been subject to rigorous research. Research has, thus, led to its unparalleled use and the development of well-established protocols for cardiac surgery. In comparison to UFH, bivalirudin use for acute HIT patients requiring urgent cardiac surgery with cardiopulmonary bypass (CPB) is still in its infancy...
August 1, 2017: Perfusion
https://www.readbyqxmd.com/read/28765353/hemostatic-management-of-trauma-induced-coagulopathy
#9
Janise B Phillips, Phillip L Mohorn, Rebecca E Bookstaver, Tanya O Ezekiel, Christopher M Watson
Trauma-induced coagulopathy is a primary factor in many trauma-related fatalities. Management hinges upon rapid diagnosis of coagulation abnormalities and immediate administration of appropriate hemostatic agents. Use of crystalloids and packed red blood cells has traditionally been the core of trauma resuscitation, but current massive transfusion protocols include combination therapy with fresh frozen plasma and predefined ratios of platelets to packed red blood cells, limiting crystalloid administration. Hemostatic agents such as tranexamic acid, prothrombin complex concentrate, fibrinogen concentrate, and, in cases of refractory bleeding, recombinant activated factor VIIa may also be warranted...
August 2017: Critical Care Nurse
https://www.readbyqxmd.com/read/28756471/the-research-agenda-for-trauma-critical-care
#10
REVIEW
Karim Asehnoune, Zsolt Balogh, Giuseppe Citerio, Andre Cap, Timothy Billiar, Nino Stocchetti, Mitchell J Cohen, Paolo Pelosi, Nicola Curry, Christine Gaarder, Russell Gruen, John Holcomb, Beverley J Hunt, Nicole P Juffermans, Mark Maegele, Mark Midwinter, Frederick A Moore, Michael O'Dwyer, Jean-François Pittet, Herbert Schöchl, Martin Schreiber, Philip C Spinella, Simon Stanworth, Robert Winfield, Karim Brohi
In this research agenda on the acute and critical care management of trauma patients, we concentrate on the major factors leading to death, namely haemorrhage and traumatic brain injury (TBI). In haemostasis biology, the results of randomised controlled trials have led to the therapeutic focus moving away from the augmentation of coagulation factors (such as recombinant factor VIIa) and towards fibrinogen supplementation and administration of antifibrinolytics such as tranexamic acid. Novel diagnostic techniques need to be evaluated to determine whether an individualised precision approach is superior to current empirical practice...
July 29, 2017: Intensive Care Medicine
https://www.readbyqxmd.com/read/28734839/recombinant-expression-of-ixolaris-a-kunitz-type-inhibitor-from-the-tick-salivary-gland-for-nmr-studies
#11
V S De Paula, F H S Silva, I M B Francischetti, R Q Monteiro, A P Valente
Ixolaris is an anticoagulant protein identified in the tick saliva of Ixodes scapularis. Ixolaris contains 2 Kunitz like domains and binds to Factor Xa or Factor X as a scaffold for inhibition of the Tissue Factor (TF)/Factor VIIa (FVIIa). In contrast to tissue factor pathway inhibitor (TFPI), however, Ixolaris does not bind to the active site cleft of FXa. Instead, complex formation is mediated by the FXa heparin-binding exosite. Due to its potent and long-lasting antithrombotic activity, Ixolaris is a promising agent for anticoagulant therapy...
November 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/28693567/protocol-based-invasive-intracranial-pressure-monitoring-in-acute-liver-failure-feasibility-safety-and-impact-on-management
#12
Venkatakrishna Rajajee, Robert J Fontana, Anthony J Courey, Parag G Patil
BACKGROUND: Acute liver failure (ALF) may result in elevated intracranial pressure (ICP). While invasive ICP monitoring (IICPM) may have a role in ALF management, these patients are typically coagulopathic and at risk for intracranial hemorrhage (ICH). Contemporary ICP monitoring techniques and coagulopathy reversal strategies may be associated with a lower risk of hemorrhage. Our objective was to evaluate the safety, feasibility, impact on clinical management and outcomes associated with protocol-directed use of IICPM in ALF...
July 11, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28672139/management-of-surgical-third-lower-molar-extraction-and-postoperative-progress-in-patients-with-factor-vii-deficiency-a-clinical-protocol-and-focus-on-this-rare-pathologic-entity
#13
Pier Carmine Passarelli, Guido Pasquantonio, Antonio D'Addona
PURPOSE: The purpose of the present study was to analyze the management of surgical third molar extraction and postoperative progress in patients with a diagnosis of factor VII deficiency. Close collaboration between the oral-maxillofacial surgeon and hematologist will allow the team to categorize the risk and operate safely, thereby minimizing the incidence and severity of intraoperative and postoperative complications. MATERIALS AND METHODS: The present retrospective study included 7 patients with factor VII deficiency who had undergone third lower molar surgery...
October 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28594467/biochemical-characterization-of-lr769-a-new-recombinant-factor-viia-bypassing-agent-produced-in-the-milk-of-transgenic-rabbits
#14
G Chevreux, N Tilly, Y Leblanc, C Ramon, V Faid, M Martin, F Dhainaut, N Bihoreau
BACKGROUND: The bypassing agent factor VII (FVIIa) is a first-line therapy for the treatment of acute bleeding episodes in patients with haemophilia and high-titre inhibitors. FVIIa is a highly post-translationally modified protein that requires eukaryotic expression systems to produce a fully active molecule. A recombinant FVIIa was produced in the milk of transgenic rabbits to increase expression and provide an efficient, safe and affordable product after purification to homogeneity (LR769)...
June 8, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28523327/complicated-diverticulitis-in-a-de-novo-kidney-transplanted-patient
#15
Liliana Ana TuŢă, Mădălina Boşoteanu, Eugen Dumitru, Mariana Deacu
Diverticular disease is frequent amongst the elderly and immunosuppressed patients. It mainly presents as sigmoid diverticulitis, but severe complications, like bleedings, infections and colon perforation may occur, frequently due to immunosuppressive therapy. Moreover, antibiotherapy and hemostatics may not efficiently control evolution in such cases. Early diagnose and adequate treatment of colonic diverticulosis complicated with lower gastrointestinal bleeding and diverticulitis in immunocompromised patients...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28512053/effect-of-chitosan-and-coagulation-factors-on-the-wound-repair-phenotype-of-bioengineered-blood-clots
#16
Caroline D Hoemann, Catherine Marchand, Georges-Etienne Rivard, Hani El-Gabalawy, Patrice E Poubelle
Controlling the blood clot phenotype in a surgically prepared wound is an evolving concept in scaffold-guided tissue engineering. Here, we investigated the effect of added chitosan (80% or 95% Degree of Deacetylation, DDA) or coagulation factors (recombinant human Factor VIIa, Tissue Factor, thrombin) on inflammatory factors released by blood clots. We tested the hypothesis that 80% DDA chitosan specifically enhances leukotriene B4 (LTB4) production. Human or rabbit whole blood was combined with isotonic chitosan solutions, coagulation factors, or lipopolysaccharide, cultured in vitro at 37°C, and after 4hours the serum was assayed for LTB4 or inflammatory factors...
May 13, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28509781/correction-of-severe-coagulopathy-and-hyperfibrinolysis-by-tranexamic-acid-and-recombinant-factor-viia-in-a-cirrhotic-patient-after-trauma-a-case-report
#17
Jack Louro, Katherine Andersen, Roman Dudaryk
Coagulopathy induced by trauma or cirrhosis is a well-recognized entity. Viscoelastic testing has been used in either condition for goal-directed transfusion and detection of fibrinolysis since conventional coagulation tests do not correlate with clinical risk of bleeding. Hemostatic resuscitation may not be adequate for a trauma patient with liver disease due to complex alterations in coagulation systems and occasionally require adjuvant therapy. We report a case of trauma-induced coagulopathy presenting as severe hyperfibrinolysis in a cirrhotic patient who was refractory to hemostatic resuscitation but was rapidly corrected by the administration of tranexamic acid and recombinant Factor VIIa...
September 1, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28496951/can-aptameric-ligands-specific-to-plasma-coagulation-factor-vii-bind-the-recombinant-form-with-high-affinity-affinity-measurement-by-fluorescence-method
#18
Maryam Tabarzad, Marzieh Jafari, Nastaran Nafissi-Varcheh
BACKGROUND: Among diverse protein purification systems, affinity chromatography is the most attractive one in the purification process of coagulation factors. Coagulation factor VII is a plasma serine protease that has a significant role in natural human hemostasis and its recombinant form such as AryoSeven(™), has been applied in clinical treatment of bleeding disorders. Immunoaffinity chromatography is the purification method of choice that is currently applied in the development of coagulation factor VIIa products...
April 2017: Avicenna Journal of Medical Biotechnology
https://www.readbyqxmd.com/read/28496540/recombinant-factor-viia-use-for-endoscopic-retrograde-cholangiopancreatography-with-sphincterotomy-in-a-patient-with-choledocholithiasis-and-unusual-coagulopathy
#19
Molham Abdulsamad, Pavithra Reddy, Suvarna Guvvala, Anil Dev
Endoscopic retrograde cholangiopancreatography (ERCP) is a procedure that combines the use of endoscopy and fluoroscopy to diagnose and treat pancreaticobiliary disorders. The risks of ERCP include pancreatitis, infection, bleeding and perforation. Bleeding during ERCP typically develops after sphincterotomy, hence patients should be screened and tested for coagulopathy before undergoing ERCP. Coagulopathy is a major risk factor for ERCP-related bleeding. Inherited factor VII (FVII) deficiency is a rare autosomal recessive hemorrhagic disorder that can lead to significant coagulopathy and severe bleeding if not appropriately recognized and treated preoperatively...
April 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/28475272/recombinant-factor-viia-addition-to-haemophilic-blood-perfused-over-collagen-tissue-factor-can-sufficiently-bypass-the-factor-ixa-viiia-defect-to-rescue-fibrin-generation
#20
R Li, K A Panckeri, P F Fogarty, A Cuker, S L Diamond
INTRODUCTION: Factor VIII (FVIII) or factor IX (FIX)-deficient haemophilic patients display deficits in platelet and fibrin deposition under flow detectable in microfluidics. Compared to fibrin generation, decreased platelet deposition in haemophilic blood flow is more easily rescued with recombinant factor VIIa (rFVIIa), whereas rFVIIa requires FXIIa participation to generate fibrin when tissue factor (TF) is absent. AIMS: Perfusion of haemophilic whole blood (WB) over collagen/TF surfaces was used to determine whether rFVIIa/TF was sufficient to bypass poor FIXa/FVIIIa function in blood from patients with haemophilia A and B...
September 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
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