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https://www.readbyqxmd.com/read/27917497/acquired-factor-xiii-inhibitor-associated-with-mantle-cell-lymphoma
#1
Christian P Nixon, Elizabeth H Prsic, Christine A Guertin, Ryan L Stevenson, Joseph D Sweeney
BACKGROUND: Acquired Factor (F)XIII deficiency is a very rare bleeding diathesis with a potentially fatal outcome, previously described in the context of autoimmune disorders and leukemias. There is minimal information on autoantibody characterization and the role of antifibrinolytic therapy in patient management. CASE REPORT: A 79-year-old woman with a 3-month history of bruising and heavy menorrhagia presented with ongoing vaginal bleeding, symptomatic anemia, and a right thigh hematoma...
December 4, 2016: Transfusion
https://www.readbyqxmd.com/read/27899993/predictive-value-of-microparticle-associated-tissue-factor-activity-for-permeability-glycoprotein-mediated-multidrug-resistance-in-cancer
#2
Antonio Angelini, Sebastiano Miscia, Maria Antonietta Centurione, Roberta Di Pietro, Lucia Centurione
Multidrug resistance (MDR) protein 1, which is also known as permeability glycoprotein (Pgp), and tissue factor (TF) are recurrently overexpressed on the surface of cancer cells, likely in response to stimuli such as chemotherapy. Microparticles (MPs) released from cancer cells into the bloodstream express tumour markers on their surface that may be useful as predictive biomarkers for evaluating disease progression. The present study measured the level of TF/factor VII (FVII)-dependent coagulation of MPs isolated from the plasma of cancer patients with various tumours, who were undergoing chemotherapy...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27896950/ppar%C3%AE-agonists-negatively-regulate-%C3%AE-iib%C3%AE-3-integrin-outside-in-signalling-and-platelet-function-through-upregulation-of-protein-kinase-a-activity
#3
A J Unsworth, N Kriek, A P Bye, K Naran, T Sage, G D Flora, J M Gibbins
BACKGROUND: Agonists for the peroxisome proliferator activated receptor PPARγ, have been shown to have inhibitory effects on platelet activity following stimulation by GPVI and GPCR agonists. OBJECTIVES: Profound effects on thrombus formation led us to suspect a role for PPARγ agonists in the regulation of integrin αIIbβ3 mediated signalling. Both GPVI and GPCR signalling pathways lead to αIIbβ3 activation, and signalling through αIIbβ3 plays a critical role in platelet function and normal haemostasis...
November 29, 2016: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/27890816/pathophysiology-of-hemophilic-arthropathy-and-potential-targets-for-therapy
#4
REVIEW
Astrid E Pulles, Simon C Mastbergen, Roger E G Schutgens, Floris P J G Lafeber, Lize F D van Vulpen
Hemophilia is a congenital clotting factor deficiency characterized by spontaneous and trauma-related bleeding. Spontaneous bleeding shows a predilection for joints, and repeated hemarthroses lead to a disabling condition called hemophilic arthropathy. Treatment of this condition consists of preventing joint bleeding on the one hand and orthopedic surgery as a last resort on the other. Up till now, there is no disease modifying therapy available to fill the gap between these extremes. This review provides an overview of the pathogenesis of hemophilic arthropathy in order to identify potential targets for therapy...
November 24, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27871266/antioxidant-antidiarrheal-hypoglycemic-and-thrombolytic-activities-of-organic-and-aqueous-extracts-of-hopea-odorata-leaves-and-in-silico-pass-prediction-of-its-isolated-compounds
#5
Mohammad Shah Hafez Kabir, Mohammed Munawar Hossain, Md Imtiazul Kabir, Shabbir Ahmad, Nishan Chakrabarty, Md Atiar Rahman, Md Mominur Rahman
BACKGROUND: Hopea Odorata, locally known as Telsur (Bangladesh), has some traditional uses as folk medicine. This study aims to investigate the antioxidant, antidiarrheal, hypoglycemic and thrombolytic activities of H. odorata leaf extracts as new therapeutic prospects predicting the activity of some of the isolated compounds of this plant. METHODS: Leaves of Hopea odorata was extracted with pure methanol (MEHO), ethanol (EEHO) and water (AEHO). The extract was tested for antioxidant activity by using reducing power and H2O2 scavenging assay...
November 21, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27856667/protocolled-redefinition-of-the-therapeutic-range-for-unfractionated-heparin-lost-in-translation
#6
Karlien L M Coene, Fedde van der Graaf, Daan van de Kerkhof
BACKGROUND: Protocolled treatment with unfractionated heparin (UFH) is a subject of ongoing debate. Even though international guidelines prescribe calibration of the activated partial thromboplastin time (aPTT) to 0.3 to 0.7 U/mL anti-Xa activity to establish an UFH therapeutic range, evidence for this approach remains scarce. In this study, we evaluated different strategies to delineate the UFH therapeutic range and analyzed the effects on patient therapeutic classification. METHODS: In 109 patient samples, the aPTT was measured with 2 different reagents, both of which used mechanical clot detection...
November 16, 2016: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/27847121/outcomes-following-routine-antithrombin-iii-replacement-during-neonatal-extracorporeal-membrane-oxygenation
#7
Brian K Stansfield, Linda Wise, P Benson Ham, Pinkal Patel, Malinda Parman, Chan Jin, Sunil Mathur, Gregory Harshfield, Jatinder Bhatia
BACKGROUND: We sought to examine the effect of routine antithrombin III (AT3) infusion on hemorrhagic and thrombotic complications, blood product utilization, and circuit lifespan in neonatal extracorporeal membrane oxygenation (ECMO). METHODS: We performed a retrospective cohort study of 162 infants placed on ECMO for hypoxic respiratory failure. Infants requiring ECMO for primary cardiac support were excluded. Demographic data, time on ECMO, blood product usage, coagulation profile, and complications were compared between 90 control patients and 72 patients treated with AT3...
October 30, 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27833344/clinical-trial-evaluating-the-risk-of-thromboembolic-events-during-dental-extractions
#8
Gokkulakrishnan Sadhasivam, Satya Bhushan, Kho Chai Chiang, Neha Agarwal, P L Vasundhar
PURPOSE: Discontinuation of anti-platelet therapy increases the risk of thrombotic complications whereas its continuation is believed to increase the risk of prolonged post-extraction bleeding. We therefore, performed this study to evaluate the risk of significant bleeding following dental extractions and also to assess the necessity of discontinuing anti-platelet therapy. PATIENTS AND METHODS: Three hundred patients requiring dental extraction were included in the study in which 200 patients were on anti-platelet therapy...
December 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27822142/non-enzymatic-upregulation-of-tissue-factor-expression-by-gamma-glutamyl-transferase-in-human-peripheral-blood-mononuclear-cells
#9
Valentina Scalise, Cristina Balia, Silvana Cianchetti, Tommaso Neri, Vittoria Carnicelli, Riccardo Zucchi, Maria Franzini, Alessandro Corti, Aldo Paolicchi, Alessandro Celi, Roberto Pedrinelli
BACKGROUND: Besides maintaining intracellular glutathione stores, gamma-glutamyltransferase(GGT) generates reactive oxygen species and activates NFkB, a redox-sensitive transcription factor key in the induction of Tissue Factor (TF) gene expression, the principal initiator of the clotting cascade. Thus, GGT might be involved in TF-mediated coagulation processes, an assumption untested insofar. METHODS: Experiments were run with either equine, enzymatically active GGT or human recombinant (hr) GGT, a wheat germ-derived protein enzymatically inert because of missing post-translational glycosylation...
2016: Thrombosis Journal
https://www.readbyqxmd.com/read/27766635/procoagulant-profile-in-patients-with-immune-thrombocytopenia
#10
María T Álvarez-Román, Ihosvany Fernández-Bello, Víctor Jiménez-Yuste, Mónica Martín-Salces, Elena G Arias-Salgado, María I Rivas Pollmar, Raúl Justo Sanz, Nora V Butta
Despite their low platelet count some immune thrombocytopenia (ITP) patients seldom bleed, indicating the presence of factors to compensate thrombocytopenia. Moreover, ITP patients may have an increased risk for thrombosis. These facts suggest the presence of procoagulant mechanisms that have not been clarified yet. The aim of this study was to identify these possible factors. Moreover, the utility of rotational thromboelastometry (ROTEM(®) ) to test haemostasis in these patients was also evaluated. Patients with ITP presented a procoagulant profile due to an increased amount of platelet- and red cell-microparticles, an increased resistance to protein C and the formation of a clot more resistant to fibrinolysis due to augmented levels of plasminogen activator inhibitor-1, which might reflect an endothelial damage/activation in ITP patients...
December 2016: British Journal of Haematology
https://www.readbyqxmd.com/read/27766066/hemophilia-a-gene-therapy-via-intraosseous-delivery-of-factor-viii-lentiviral-vectors
#11
Carol H Miao
Current treatment of hemophilia A (HemA) patients with repeated infusions of factor VIII (FVIII; abbreviated as F8 in constructs) is costly, inconvenient, and incompletely effective. In addition, approximately 25 % of treated patients develop anti-factor VIII immune responses. Gene therapy that can achieve long-term phenotypic correction without the complication of anti-factor VIII antibody formation is highly desired. Lentiviral vector (LV)-mediated gene transfer into hematopoietic stem cells (HSCs) results in stable integration of FVIII gene into the host genome, leading to persistent therapeutic effect...
2016: Thrombosis Journal
https://www.readbyqxmd.com/read/27762105/clinical-profile-and-laboratory-parameters-in-1051-victims-of-snakebite-from-a-single-centre-in-kerala-south-india
#12
J C Menon, J K Joseph, M P Jose, B L Dhananjaya, O V Oommen
INTRODUCTION: Snakebite is an occupational hazard causing considerable morbidity and mortality worldwide, particularly so in tropical countries like India. OBJECTIVE: The aim of this study is to (i) review the demographic, clinical and laboratory findings in patients (1051) admitted with venomous snakebite (ii) to correlate mortality, morbidity and duration of hospital stay with clinical signs, symptoms and laboratory parameters. METHODS: A retrospective study of 1051 patients treated for snakebite over 10 years (2000 - 2009) in Little Flower Hospital, Angamaly, Kerala...
August 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27745797/thromboprophylaxis-with-heparin-during-orthotopic-liver-transplantation-comparison-of-hepcon-hms-plus-and-anti-xa-assays-for-low-range-heparin
#13
Ramona Nicolau-Raducu, Elise Occhipinti, Thomas Marshall, Joseph Koveleskie, Donald Ganier, Brian Evans, William Daly, Brian Fish, Ari J Cohen, Trevor W Reichman, David Bruce, Humberto Bohorquez, John Seal, Emily Ahmed, Ian Carmody, George Loss, Jonathan Rayburn, Bobby Nossaman
OBJECTIVES: The purpose of this study was to compare the agreement between two heparin assays, Hepcon HMS plus/Kaolin-ACT and Anti-Xa, and their predictive power in detecting circulating heparin levels post-reperfusion of the liver graft when compared with thromboelastogram (TEG) r time ratio in patients undergoing orthotopic liver transplantation (OLT). DESIGN: Prospective, observational cohort study design. SETTING: Single center, university hospital...
August 2, 2016: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/27730530/a-combined-approach-using-global-coagulation-assays-quickly-differentiates-coagulation-disorders-with-prolonged-aptt-and-low-levels-of-fviii-activity
#14
Tomoko Matsumoto, Keiji Nogami, Midori Shima
Patients with mild/moderate hemophilia (H)A, acquired HA (AHA) and lupus anticoagulants (LA), have prolonged aPTTs with low levels of factor (F)VIII activity, but the differentiation of these disorders is complex and time consuming. We established an approach to quickly differentiate these disorders using comprehensive coagulation tests. Patients' plasmas with mild/moderate HA, AHA, LA without anti-phospholipid syndrome [LA-APS(-)], and LA with APS [LA-APS(+)] were examined using clot waveform analysis (CWA) and thrombin generation test (TGT)...
October 11, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/27693845/anti-inflammatory-and-anti-fibrinolytic-effects-of-thrombomodulin-alfa-through-carboxypeptidase-b2-in-the-presence-of-thrombin
#15
Shunsuke Tawara, Takumi Sakai, Osamu Matsuzaki
BACKGROUND: Thrombomodulin (TM) alfa, a recombinant human soluble TM, enhances activation of pro-carboxypeptidase B2 (pro-CPB2) by thrombin. Activated pro-CPB2 (CPB2) exerts anti-inflammatory and anti-fibrinolytic activities. Therefore, TM alfa may also have anti-inflammatory and anti-fibrinolytic effects through CPB2. However, these effects of TM alfa have not been elucidated. In the present study, we investigated the effects of TM alfa on inactivation of complement component C5a as an anti-inflammatory effect and prolongation of clot lysis time as an anti-fibrinolytic effect via CPB2 in vitro...
September 17, 2016: Thrombosis Research
https://www.readbyqxmd.com/read/27684194/ferric-chloride-induced-murine-thrombosis-models
#16
Wei Li, Marvin Nieman, Anirban Sen Gupta
Arterial thrombosis (blood clot) is a common complication of many systemic diseases associated with chronic inflammation, including atherosclerosis, diabetes, obesity, cancer and chronic autoimmune rheumatologic disorders. Thrombi are the cause of most heart attacks, strokes and extremity loss, making thrombosis an extremely important public health problem. Since these thrombi stem from inappropriate platelet activation and subsequent coagulation, targeting these systems therapeutically has important clinical significance for developing safer treatments...
September 5, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27665416/how-can-the-pressure-in-anti-embolism-stockings-be-maintained-during-use-laboratory-evaluation-of-simulated-wear-and-different-reconditioning-protocols
#17
Lisa Macintyre, Hazel Stewart, Michelle Rae
BACKGROUND: Deep vein thrombosis is a major global health issue, responsible for thousands of deaths each year. While thrombi can form under a variety of circumstances, lack of mobility significantly increases risk and therefore non-ambulant patients are frequently fitted with anti-embolism stockings on admission to hospital, to aid blood flow, prevent pooling and thus clotting. Anti-embolism stockings are the most widely used non-invasive medical device on the market and are believed to reduce the risk of deep vein thrombosis by 40%...
September 13, 2016: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/27662809/differential-regulation-of-macrophage-inflammatory-activation-by-fibrin-and-fibrinogen
#18
Jessica Y Hsieh, Tim D Smith, Vijaykumar S Meli, Thi N Tran, Elliot L Botvinick, Wendy F Liu
: Fibrin is a major component of the provisional extracellular matrix formed during tissue repair following injury, and enables cell infiltration and anchoring at the wound site. Macrophages are dynamic regulators of this process, advancing and resolving inflammation in response to cues in their microenvironment. Although much is known about how soluble factors such as cytokines and chemokines regulate macrophage polarization, less is understood about how insoluble and adhesive cues, specifically the blood coagulation matrix fibrin, influence macrophage behavior...
September 20, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27658470/direct-oral-anticoagulants-in-emergency-trauma-admissions
#19
Marc Maegele, Oliver Grottke, Herbert Schöchl, Oliver A Sakowitz, Michael Spannagl, Jürgen Koscielny
BACKGROUND: Direct (non-vitamin-K-dependent) oral anticoagulants (DOAC) are given as an alternative to vitamin K antagonists (VKA) to prevent stroke and embolic disease in patients with atrial fibrillation that is not due to pathology of the heart valves. Fatal hemorrhage is rarer when DOACs are given (nonvalvular atrial fibrillation: odds ratio [OR] 0.68; 95% confidence interval [95% CI: 0.48; 0.96], and venous thromboembolism: OR 0.54; [0.22; 1.32]). 48% of emergency trauma patients need an emergency operation or early surgery...
September 5, 2016: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/27619744/to-neither-bleed-nor-clot-that-is-the-question
#20
EDITORIAL
Rhian E Davies, Ian C Gilchrist
Patients with atrial fibrillation (AF) when stented with thin-strut colbalt chrome stents may have a similar outcome to patients without AF. Management of patients with AF potentially place patients at enhanced bleeding risk with triple antithrombotic therapy, or potential thrombotic risk if either oral anticoagulation is held or anti-platelet therapy is truncated. Guideline-based oral anticoagulation for AF is expanding this patient group presenting to the cardiac catheterization laboratory, yet management decisions are still based on limited studies and rely on expert concensus...
September 2016: Catheterization and Cardiovascular Interventions
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