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https://www.readbyqxmd.com/read/27925685/in-vitro-characterization-of-synthoplate-%C3%A2-synthetic-platelet-technology-and-its-in-vivo-evaluation-in-severely-thrombocytopenic-mice
#1
Meenal Shukla, Ujjal D S Sekhon, Venkaiah Betapudi, Wei Li, DaShawn A Hickman, Christa L Pawlowski, Mitchell R Dyer, Matthew D Neal, Keith R McCrae, Anirban Sen Gupta
BACKGROUND: Platelet transfusion applications face severe challenges due to the limited availability and portability, high risk of contamination and short shelf-life of platelets. Therefore there is significant interest in synthetic platelet substitutes that can render hemostasis while avoiding these issues. Platelets promote hemostasis by injury site-selective adhesion and aggregation, and propagation of coagulation reactions on their membrane. Based on these mechanisms, we have developed a synthetic platelet technology (SynthoPlate(™) ) that integrates platelet-mimetic site-selective 'adhesion' and 'aggregation' functionalities via heteromultivalent surface-decoration of lipid vesicles with Von Willebrand Factor-binding, collagen-binding and active platelet integrin GPIIb-IIIa-binding peptides...
December 7, 2016: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/27922933/the-cross-sectional-association-between-vasomotor-symptoms-and-hemostatic-parameter-levels-in-postmenopausal-women
#2
Laura B Harrington, Marc Blondon, Mary Cushman, Andrew M Kaunitz, Jacques E Rossouw, Matthew A Allison, Lisa W Martin, Karen C Johnson, Jan Rosing, Nancy F Woods, Andrea Z LaCroix, Susan R Heckbert, Barbara McKnight, Nicholas L Smith
OBJECTIVE: Vasomotor symptoms (VMS) may be a marker of cardiovascular risk. We aimed to evaluate the cross-sectional association of VMS presence and severity with hemostatic parameter levels measured at baseline among Women's Health Initiative (WHI) Hormone Therapy trial postmenopausal participants. METHODS: This cross-sectional analysis included 2,148 postmenopausal women with measures of VMS presence and severity reported in the 4 weeks before WHI baseline, who were not using warfarin or hormone therapy and for whom the following baseline hemostatic parameters were measured within the WHI Cardiovascular Disease Biomarker Case-Control Study: antithrombin, plasminogen activator inhibitor-1, protein C antigen, total and free protein S antigen, total and free tissue factor pathway inhibitor, D-dimer, normalized activated protein C sensitivity ratio, and thrombin generation...
December 5, 2016: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/27922523/a-simple-and-effective-technique-for-anatomical-approximation-of-the-upper-pericardium-using-hemostatic-clips
#3
Mubassher Husain, Metesh Nalin Acharya, Ian Cummings, Shahzad Gull Raja
Closure of the pericardium is important to protect bypass grafts, the great vessels, and the heart from injury due to sternal dehiscence. Furthermore, it is reported to reduce the formation of pericardial adhesions and thus facilitate entry into the chest at resternotomy. We here describe a simple, reproducible, and effective technique for tension-free approximation of the upper pericardium by applying small hemostatic clips to the preserved thymic fascia overlying the pericardium.
December 2, 2016: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/27920935/cerebral-foreign-body-granuloma-in-brain-triggering-generalized-seizures-without-obvious-craniocerebral-injury-a-case-report-and-review-of-the-literature
#4
Nina Brawanski, Peter Baumgarten, Jürgen Konczalla, Volker Seifert, Christian Senft
BACKGROUND: Intracerebral foreign body granuloma is rarely reported. We present the case of a male patient with a cerebral foreign body granuloma. CASE DESCRIPTION: Initial admission of a 67-year-old male patient was after an aphasia followed by secondary generalized seizures. Cranial computed tomography (CCT) showed a metal-dense, wedge-shaped foreign body in the range of the frontal sinus on the left side, breaking through the frontal sinus, and creating a connection to the frontal cerebral lobe...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/27920230/troubleshooting-for-bleeding-in-thoracoscopic-anatomic-pulmonary-resection
#5
Hitoshi Igai, Mitsuhiro Kamiyoshihara, Takashi Ibe, Natsuko Kawatani, Fumi Osawa, Ryohei Yoshikawa
INTRODUCTION: The objective of this study was to evaluate intraoperative vessel injury and assess troubleshooting during thoracoscopic anatomic pulmonary resection. METHODS: Between April 2012 and March 2016, 240 patients underwent thoracoscopic anatomic lung resection, 26 of whom were identified as having massive bleeding intraoperatively. We analyzed the injured vessel and the hemostatic procedure employed, then compared the perioperative outcomes in patients with (n = 26) and without (n = 214) vessel injury...
December 5, 2016: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/27918320/value-of-preoperative-hemostasis-testing-in-patients-with-liver-disease-for-perioperative-hemostatic-management
#6
Ton Lisman, Robert J Porte
No abstract text is available yet for this article.
December 2, 2016: Anesthesiology
https://www.readbyqxmd.com/read/27917816/effect-of-ankaferd-blood-stopper-on-muscle-healing
#7
Murat Uygun, Osman Y Yavuz, İsmail Uraş, İbrahim G Duman, Hacer Haltaş, Mahmut Kömürcü
PURPOSE: Ankaferd Blood Stopper (ABS), which is a standardized mixture of herbal extracts obtained from five plants, has been proven as an efficient hemostatic agent and is still used in emergency situations. It is not known exactly if decreased bleeding has positive or negative effects on muscle healing and fibrosis, so the purpose of this study was to test the effect of ABS on muscle healing and morphology. METHODS: A total of 66 outbred Wistar rats were divided into three control and three experimental subgroups...
December 1, 2016: Clinical and Investigative Medicine. Médecine Clinique et Experimentale
https://www.readbyqxmd.com/read/27917714/antiplatelet-and-anticoagulation-treatment-in-patients-with-thrombocytopenia
#8
Nuccia Morici, Silvia Cantoni, Paola Vallerio, Marco Cattaneo, Stefano Savonitto
Thrombocytopenia (TP) is a common finding in patients hospitalized for cardiovascular causes and needing antiplatelet and anticoagulant therapies. However, TP is not only a numeric parameter, but mostly a dynamic condition affected by the patients' underlying disorders and concomitant treatments. Platelets are important players in the hemostatic process, taking part to both primary and secondary hemostasis. Although both TP and antithrombotic treatment contribute to the risk of bleeding, the complexity of the pathogenesis of bleeding events makes it difficult to predict them accurately simply based on these two parameters...
December 5, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27917713/antiplatelets-and-antithrombotics-in-patients-with-liver-insufficiency-from-pathophysiology-to-clinical-practice
#9
Melanie Deutsch, John Koskinas
The liver represents the site of synthesis of most procoagulant and anticoagulant factors, fibrinolytic proteins and thrombopoetin while being also involved in the clearance of hemostatic and fibrinolyic proteins. Therefore in patients with liver insufficiency a great variety of disturbances can be documented resulting however in a new "rebalanced" hemostatic system with a labile equilibrium between thromboses or bleeding. Interestingly patients with liver insufficiency may present with arterial or venous thrombotic episodes requiring antiplatelet and/or antithrombotic therapy despite low platelet count or prolonged INR...
December 5, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27917335/ultrastructural-analyses-of-the-novel-chimeric-hemostatic-agent-generated-via-nanotechnology-abs-nanohemostat-at-the-renal-tissue-level
#10
Emre Huri, Engin Dogantekin, Murvet Hayran, Umit Yavuz Malkan, Mine Ergun, Aysegul Firat, Yavuz Beyazit, Huseyin Ustun, Murat Kekilli, Mumtaz Dadali, Muzeyyen Astarci, Ibrahim C Haznedaroglu
Ankaferd Blood Stopper (ABS), a hemostatic agent of plant origin, has been registered for the prevention of clinical hemorrhages. Currently there is no data regarding the ultrastructural analysis of ABS at the tissue level. The aim of this study is to assess renal tissue effects via scanning electron microscopy (SEM) analyses for the ABS and ABS nanohemostat (formed by the combination of self-assembling peptide amphiphile molecules and ABS). SEM experiments were performed with FEI Nova NanoSEM 230, using the ETD detector at low vacuum mode with 30 keV beam energy...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27913736/additional-effects-of-topical-tranexamic-acid-in-on-pump-cardiac-surgery
#11
Noppon Taksaudom, Sophon Siwachat, Apichat Tantraworasin
OBJECTIVE: Postoperative bleeding after cardiac surgery is commonly associated with hyperfibrinolysis. This study was designed to evaluate the efficacy of topical tranexamic acid in addition to intravenous tranexamic acid in reducing bleeding in cardiac surgery cases. METHODS: From July 1, 2014 to September 30, 2015, 82 patients who underwent elective on-pump cardiac surgery were randomized into a tranexamic acid group and a placebo group. In the tranexamic acid group, 1 g of tranexamic acid dissolved in 100 mL of normal saline solution was poured into the pericardium during sternal closure; the placebo group had 100 mL of saline only...
December 2, 2016: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/27913545/what-have-we-learned-from-large-population-studies-of-von-willebrand-disease
#12
Robert R Montgomery, Veronica H Flood
Von Willebrand factor (VWF) is a critical regulator of hemostatic processes, including collagen binding, platelet adhesion, and platelet aggregation. It also serves as a carrier protein to normalize plasma factor VIII synthesis, release, and survival. While VWF protein measurements by immunoassay are reasonably comparable between institutions, the measurement of VWF ristocetin cofactor activity (VWF:RCo) has significant variability. Other tests of VWF function, including collagen binding or platelet glycoprotein IIb-IIIa binding, are not universally available, yet these functional defects may cause major bleeding even with normal VWF antigen (VWF:Ag) and VWF:RCo assays...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913544/treatment-of-rare-factor-deficiencies-in-2016
#13
Flora Peyvandi, Marzia Menegatti
Rare bleeding disorders (RBDs) are a heterogeneous group of coagulation disorders characterized by fibrinogen, prothrombin, factors V, VII, X, XI, or XIII (FV, FVII, FX, FXI, or FXIII, respectively), and the combined factor V + VIII and vitamin K-dependent proteins deficiencies, representing roughly 5% of all bleeding disorders. They are usually transmitted as autosomal, recessive disorders, and the prevalence of the severe forms could range from 1 case in 500 000 for FVII up to 1 in 2-3 million for FXIII in the general population...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913540/sickle-cell-disease-an-inherited-thrombophilia
#14
Ted Wun, Ann Brunson
Activation of the hemostatic system occurs in patients with sickle cell disease. The extent to which this activation contributes to sickle cell pathophysiology is uncertain. Clinical trials of anticoagulants or platelet inhibitors have demonstrated the ability to decrease biomarkers of hemostatic activation, but this has generally not resulted in improvement in clinically relevant outcomes. Venous thromboembolism (VTE: deep venous thrombosis and pulmonary embolism) has been until recently an underappreciated complication of sickle cell disease, with incident event and recurrence rates consistent with a strong thrombophilia...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913489/platelets-in-infectious-disease
#15
Elizabeth Middleton, Matthew T Rondina
Sepsis is a dynamic, acute, infectious disease syndrome characterized by dysregulated thrombo-inflammatory responses. The high mortality associated with sepsis has been recognized since the earliest clinicians' writings. Despite this, advances in the treatment of sepsis have been more modest. This is limited, in part, by the heterogeneity in the definition, population, presentation, and causal factors of infectious syndromes. Given the persistently high morbidity and mortality associated with sepsis, a better understanding of the dysregulated cellular biology underpinning sepsis is needed...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913486/heavy-menstrual-bleeding-work-up-and-management
#16
Andra H James
Heavy menstrual bleeding (HMB), which is the preferred term for menorrhagia, affects ∼90% of women with an underlying bleeding disorder and ∼70% of women on anticoagulation. HMB can be predicted on the basis of clots of ≥1 inch diameter, low ferritin, and "flooding" (a change of pad or tampon more frequently than hourly). The goal of the work-up is to determine whether there is a uterine/endometrial cause, a disorder of ovulation, or a disorder of coagulation. HMB manifest by flooding and/or prolonged menses, or HMB accompanied by a personal or family history of bleeding is very suggestive of a bleeding disorder and should prompt a referral to a hematologist...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27911985/hemorrhagic-hemostatic-and-thromboelastometric-disorders-in-35-dogs-with-a-clinical-diagnosis-of-leptospirosis-a-prospective-study
#17
A Barthélemy, M Magnin, C Pouzot-Nevoret, J-M Bonnet-Garin, M Hugonnard, I Goy-Thollot
BACKGROUND: Leptospirosis in dogs is occasionally associated with a hemorrhagic syndrome, the pathophysiology of which is not fully understood. HYPOTHESIS/OBJECTIVES: To characterize hematologic, hemostatic, and thromboelastometric abnormalities in dogs with leptospirosis and to study their association with hemorrhagic diatheses and outcomes. ANIMALS: Thirty-five client-owned dogs. METHODS: A prospective observational single cohort study was conducted...
December 2, 2016: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/27910727/tannin-based-adhesive-for-protection-of-colonic-anastomosis-in-the-open-abdomen
#18
Youming Deng, Jianan Ren, Guopu Chen, Gefei Wang, Guosheng Gu, Jieshou Li
: Background:This study was aimed to evaluate the effect of tannin acid- polyethylene glycol (TP) adhesive on the wound healing process of primary colonic anastomosis in the open abdomen (OA). MATERIALS AND METHODS: Adhesion strength test, degradation and hemostatic ability of TP were investigated. In a rat model, after standard colonic anastomoses, rats were divided into three groups: OA group; OA + FG (fibrin glue) group; OA + TP group. Five days after surgery, body weight, anastomotic bursting pressure (ABP), and histology of anastomotic tissue were evaluated...
December 2, 2016: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/27909508/arguments-to-apply-epinephrine-for-pocket-hematoma-reduction-the-maitre-study
#19
REVIEW
Nikolay Ilov Md, Nikolay Ilov Md, Anatoly Nechepurenko Md, Albert Abdulkadyrov, Damir Paskeev, Elena Damrina, Elena Kulikova, Marina Terent'eva, Dinara Stompel, Dmitry Tarasov Md
Pocket hematoma (PH) is a common complication of implantations of cardiac electrophysiological devices with occurring at a particularly high rate in patients on oral anticoagulation or antiplatelet treatment. Different pharmacological agents with hemostatic effect are used to avoid PH. We supposed that the vasoconstrictor effects of epinephrine may reduce bleeding extent and be effective in prevention of PH. Maitre is the first clinical trial conducted with an aim to show the safety and efficacy of epinephrine in PH prophylaxis...
June 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27907937/tranexamic-acid-for-trauma-resuscitation-in-the-united-states-of-america
#20
Mark Walsh, Scott Thomas, Ernest Moore, Hunter Moore, Andres Piscoya, Daniel Hake, Michael Son, Tim Pohlman, Julie Wegner, John Bryant, Alberto Grassetto, Patrick Davis, Nathan Nielsen, Anton Crepinsek, Jacob T Shreve, Francis Castellino
The utilization of tranexamic acid (TXA) for the management of bleeding trauma patients has been a subject of much debate on both sides of the Atlantic and in Australia. As a result of the large randomized controlled study called the Clinical Randomization of an Antifibrinolytic in Severe Hemorrhage (CRASH-2), there was an initial enthusiasm for the use of TXA to treat bleeding patients. However, the adoption of TXA in the United States was delayed by concerns of "knowledge and evidence gaps" of the CRASH-2 study and because of a lack of mechanistic rationale that would explain the survival benefit noted in the study...
December 1, 2016: Seminars in Thrombosis and Hemostasis
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