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Haemostasis

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https://www.readbyqxmd.com/read/29779246/regulation-of-plasminogen-activation-on-cell-surfaces-and-fibrin
#1
REVIEW
Tetsumei Urano, Francis J Castellino, Yuko Suzuki
The fibrinolytic system dissolves fibrin and maintains vascular patency. Recent advances in imaging analyses allowed visualization of the spatiotemporal regulatory mechanism of fibrinolysis, as well as its regulation by other plasma haemostasis cofactors. Vascular endothelial cells (VECs) retain tissue-type plasminogen activator (tPA) after secretion and maintain high plasminogen (plg) activation potential on their surfaces. As in plasma, the serpin, plasminogen activator inhibitor type 1 (PAI-1), regulates fibrinolytic potential via inhibition of the VEC surface-bound plg activator, tPA...
May 20, 2018: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29779096/the-status-of-the-hemostasis-system-under-the-influence-of-proline-peptides-during-the-development-of-experimental-metabolic-syndrome
#2
M E Grigorjeva, N F Myasoedov, L A Lyapina, T Y Obergan, L A Andreeva
A comparative study of the influence of regulatory proline peptides Pro-Gly-Pro, Pro-Arg-Pro, Pro-Gly-Pro-Leu, and Arg-Pro-Gly-Pro on the state of the hemostasis system was carried out in an experiment on male rats with metabolic syndrome. Under these conditions, repeated (7-fold) intranasal administration of the peptides in a daily dose of 50 μg/kg resulted in an increase in the anticoagulant potential of the blood, namely, in an increase in the anticoagulant, fibrinolytic, and antiplatelet activity 20 h and 7 days after the last peptide injection...
March 2018: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29765296/peripartum-haemorrhage-haemostatic-aspects-of-the-new-german-pph-guideline
#3
REVIEW
Heiko Lier, Christian von Heymann, Wolfgang Korte, Dietmar Schlembach
Summary Peripartum haemorrhage remains one of the main causes of maternal mortality world-wide. The German, Austrian and Swiss Societies of Gynaecology and Obstetrics have updated the current guidelines for the treatment of peripartum haemorrhage together with the German Society of Anaesthesiology and Intensive Care Medicine and the Society of Thrombosis and Haemostasis Research. The recommendations have been the result of a thorough review of the available scientific literature and a consensus process involving all members of the guideline group...
April 2018: Transfusion Medicine and Hemotherapy
https://www.readbyqxmd.com/read/29764706/atrial-fibrillation-and-ischemic-events-with-rivaroxaban-in-patients-with-stable-coronary-artery-disease-afire-protocol-for-a-multicenter-prospective-randomized-open-label-parallel-group-study
#4
Satoshi Yasuda, Koichi Kaikita, Hisao Ogawa, Masaharu Akao, Junya Ako, Tetsuya Matoba, Masato Nakamura, Katsumi Miyauchi, Nobuhisa Hagiwara, Kazuo Kimura, Atsushi Hirayama, Kunihiko Matsui
BACKGROUND: In atrial fibrillation (AF) patients with coronary artery disease (CAD), anticoagulants are commonly used in combination with antiplatelet drugs. However, dual therapy can increase the risk of bleeding, and the potential therapeutic benefits must be weighed against this. Therefore, it is recommended that dual therapy is only used for a limited time, and that monotherapy with anticoagulants should start from 1 year after percutaneous coronary intervention (PCI). However, there is a lack of evidence on the use of monotherapy, in particular with direct oral anticoagulants, in this group of patients...
May 2, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29760447/the-role-of-platelets-in-acute-kidney-injury
#5
REVIEW
Marcel P B Jansen, Sandrine Florquin, Joris J T H Roelofs
Acute kidney injury (AKI), a major public health problem associated with high mortality and increased risk of progression towards end-stage renal disease, is characterized by the activation of intra-renal haemostatic and inflammatory processes. Platelets, which are present in high numbers in the circulation and can rapidly release a broad spectrum of bioactive mediators, are important acute modulators of inflammation and haemostasis, as they are the first cells to arrive at sites of acute injury, where they interact with endothelial cells and leukocytes...
May 14, 2018: Nature Reviews. Nephrology
https://www.readbyqxmd.com/read/29757137/reversal-of-apixaban-induced-alterations-in-haemostasis-by-different-coagulation-factor-concentrates-in-patients-after-hip-or-knee-replacement-surgery
#6
Katrin Schmidt, Kerstin Krüger, Elisabeth Langer, Martin Schmutzler, Elke Johnen, Klaus D Wernecke, Christian Von Heymann, Mareike K Körber
BACKGROUND: Apixaban is a direct oral anticoagulant (DOAC) with a specific inhibition of activated factor X (FXa). In case of bleeding or need of urgent surgery a direct antidote is not yet available. Off-label application of non-specific haemostatic agents, such as prothrombin complex concentrate (PCC) and recombinant FVIIa (rFVIIa), has been reported to reverse the effects of apixaban in in vitro and animal studies. The aim of this study is to measure the reversal potential of PCC and rFVIIa in patients with prophylactic apixaban concentrations...
May 11, 2018: Blood Transfusion, Trasfusione del Sangue
https://www.readbyqxmd.com/read/29754426/venous-thromboembolism-in-cancer-patients-receiving-neoadjuvant-chemotherapy-a-systematic-review-and-meta-analysis
#7
M Di Nisio, M Candeloro, A W S Rutjes, E Porreca
BACKGROUND: Venous thromboembolism (VTE) is a frequent complication in cancer patients receiving adjuvant treatment. The risk of VTE during neoadjuvant chemo-radiotherapy remains unclear. OBJECTIVES: This systematic review evaluated the incidence of VTE in patients with cancer receiving neoadjuvant treatment. METHODS: MEDLINE and EMBASE databases were searched from inception to October 2017. Search results were supplemented with screening of conference proceedings of the American Society of Clinical Oncology (2009-2016) and the International Society of Thrombosis and Haemostasis (2003-2016)...
May 13, 2018: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29744223/european-perspectives-in-thoracic-surgery-the-ests-venous-thromboembolism-vte-working-group
#8
REVIEW
Yaron Shargall, Virginia R Litle
Venous thromboembolism (VTE), composed of deep vein thrombosis (DVT) and PE is a well-recognized cause for significant perioperative morbidity and mortality. While in orthopedic surgery and general oncology surgery there are well established guidelines regarding VTE prophylaxis, based on carefully conducted high level studies, in thoracic surgery the level of evidence and overall knowledge in the field is still lacking, The European Society of Thoracic Surgeons have established an international working group in 2016, whose task was the define contemporary best practice, coordinate research efforts and eventually define best practice guidelines...
April 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29739664/epidemiology-of-epistaxis-in-the-emergency-department-of-a-southern-european-tertiary-care-hospital
#9
Luis Roque Reis, Filipe Correia, Luis Castelhano, Pedro Escada
OBJECTIVE: Epistaxis is the most common rhinological emergency seen in the emergency department. The purpose of this study was to evaluate epidemiological data of epistaxis in a southern European tertiary care hospital. METHODS: A retrospective study was conducted during the period between January 2009 and December 2015. We analyzed the distribution by cross-referencing the demographic variables, destination after medical discharge, inpatient characteristics (major comorbid diseases, medication, bleeding localization and treatment) and health-care costs with the disease...
May 5, 2018: Acta Otorrinolaringológica Española
https://www.readbyqxmd.com/read/29733494/evolutionary-conservation-of-the-allosteric-activation-of-factor-viia-by-tissue-factor-in-lamprey-comment
#10
J J Madsen, E Persson, O H Olsen
We read with great interest the article on allostery in a protease from the blood coagulation cascade by Beeler et al.(1) in a recent issue of Journal of Thrombosis and Haemostasis. Herein, the authors conclude that the allosteric activation of coagulation factor VIIa (FVIIa) by tissue factor (TF) in lamprey (l-) appears indistinguishable from, and conserved compared to, that in human (h-); meaning that l-FVIIa is assumed to be catalytically incompetent unless allosterically activated by l-TF. The lamprey, an ancient jawless eel-like vertebrate, is a fascinating creature and studying its coagulation system can certainly lead to insights into molecular mechanisms of coagulation as well as evolutionary adaptations over hundreds of millions of years (reviewed in (2))...
May 7, 2018: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29731942/haemostasis-in-oral-surgery-with-blue-violet-light
#11
REVIEW
Daniela Veleska-Stevkoska, Filip Koneski
BACKGROUND: The invasive dental procedures usually result in wounds accompanied by physiological bleeding. Even though the bleeding is easily manageable, it is still one of the major concerns of the patients and a reason for their subjective discomfort. Recently, a novel approach with light-emitting diode (LED) was introduced to control the bleeding. This study aims to examine the effectiveness of the irradiation with blue-violet light LEDs on the haemostasis. MATERIAL AND METHODS: The study included 40 patients with an indication for tooth extraction, divided into two groups: examination group (n = 30) and a control group (n = 10)...
April 15, 2018: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29730601/early-application-of-haemostatic-powder-added-to-standard-management-for-oesophagogastric-variceal-bleeding-a-randomised-trial
#12
Mostafa Ibrahim, Ahmed El-Mikkawy, Mohamed Abdel Hamid, Haitham Abdalla, Arnaud Lemmers, Ibrahim Mostafa, Jacques Devière
BACKGROUND: Acute variceal bleeding (AVB) requires early therapeutic management by experienced endoscopists that often poses logistical challenges for hospitals. We assessed a different management concept with early application of haemostatic powder-which does not require high endoscopic expertise-added to conventional management in a randomised trial. METHODS: Cirrhotic patients with AVB received standard medical therapy and were randomised to either immediate endoscopy with haemostatic powder application within 2 hours of admission, followed by early elective endoscopy on the next day, that is, within 12-24 hours of admission for definitive treatment (study group) or to early elective endoscopy only (control group)...
May 5, 2018: Gut
https://www.readbyqxmd.com/read/29729372/management-of-bleeding-and-emergency-invasive-procedures-in-patients-on-dabigatran-updated-guidelines-from-the-french-working-group-on-perioperative-haemostasis-gihp-september-2016
#13
Pierre Albaladejo, Gilles Pernod, Anne Godier, Emmanuel de Maistre, Nadia Rosencher, Jean Louis Mas, Pierre Fontana, Charles Marc Samama, Annick Steib, Sylvie Schlumberger, Emmanuel Marret, Stéphanie Roullet, Sophie Susen, Samia Madi-Jebara, Philippe Nguyen, Jean François Schved, Fanny Bonhomme, Pierre Sié
In 2013, the GIHP published guidelines for the management of severe haemorrhages and emergency surgery. This update applies to patients treated with dabigatran, with a bleeding complication or undergoing an urgent invasive procedure. It includes how to handle the available specific antidote (idarucizumab), when to measure dabigatran plasmatic concentration, and when to use non-specific measures in these situations. It also includes guidelines on how to perform regional anaesthesia and analgesia procedures.
May 2, 2018: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/29727889/-endoscopic-haemostasis-step-by-step
#14
Dirk Hartmann
The clinical spectrum of gastrointestinal bleeding ranges from the possibly clinically,but often only amenable to laboratory anemia to fulminant bleeding with shock and acute danger to life. Endoscopic haemostasis is in many cases the method of choice. There are several methods available that are dependent be used by cause and localization of the bleeding.
May 2018: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/29725281/ovarian-reserve-evaluation-after-laparoscopic-cyst-enucleation-depending-on-applied-haemostasis-technique-and-with-particular-consideration-of-endometrial-cysts
#15
Dariusz Owczarek, Andrzej Malinowski, Miłosz Wilczyński
Aim of the study: was an evaluation of the effects, exerted by obtained haemostasis on ovarian reserve, depending on haemostasis technique, applied after laparoscopic enucleation of endometrial cysts. Material and methods: Sixty-six female patients, at the age of 20-35 years, were included into the study. The diameters of the cystic lesions were within 40-70 mm. The patients were randomly assigned to two study groups. Group 1 involved patients after laparoscopic enucleation of ovarian cysts, in whom haemostasis was achieved by ovary suturing, while Group 2 included patients with haemostasis achieved by bipolar coagulation technique...
March 2018: Przeglad Menopauzalny, Menopause Review
https://www.readbyqxmd.com/read/29723163/a-fibrin-biofilm-covers-the-blood-clot-and-protects-from-microbial-invasion
#16
Fraser L Macrae, Cédric Duval, Praveen Papareddy, Stephen R Baker, Nadira Yuldasheva, Katherine J Kearney, Helen R McPherson, Nathan Asquith, Joke Konings, Alessandro Casini, Jay L Degen, Simon D Connell, Helen Philippou, Alisa S Wolberg, Heiko Herwald, Robert As Ariëns
Haemostasis requires conversion of fibrinogen to fibrin fibres that generate a characteristic network, interact with blood cells, and initiate tissue repair. The fibrin network is porous and highly permeable, but the spatial arrangement of the external clot face is unknown. Here we show that fibrin transitioned to the blood-air interface through Langmuir film formation, producing a protective film confining the clot. We demonstrated that only fibrin is required to form the film, and that it occurred in vitro and in vivo...
May 3, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29723157/testosterone-and-dihydrotestosterone-reduce-platelet-activation-and-reactivity-in-older-men-and-women
#17
Kamil Karolczak, Lucyna Konieczna, Tomasz Kostka, Piotr J Witas, Bartlomiej Soltysik, Tomasz Baczek, Cezary Watala
The cardiovascular effects of testosterone and dihydrotestosterone are generally attributed to their modulatory action on lipid and glucose metabolism. However, no ex vivo studies suggest that circulating androgen levels influence the activation and reactivity of blood platelets - one of the main components of the haemostasis system directly involved in atherosclerosis. The levels of testosterone, dihydrotestosterone and oestradiol in plasma from men and women aged from 60 to 65 years were measured by LC-MS; the aim was to identify any potential relationships between sex steroid levels and the markers of platelet activation (surface membrane expression of GPII/IIIa complex and P-selectin) and platelet reactivity in response to arachidonate, collagen or ADP, monitored with whole blood aggregometry and flow cytometry...
May 2, 2018: Aging
https://www.readbyqxmd.com/read/29722491/-routine-preoperative-testing-in-adults-undergoing-elective-non-cardiothoracic-surgery
#18
REVIEW
N Benahmed, G Briat, K Rondia, J Vlayen
INTRODUCTION: The Belgian Health Care Knowledge Center (KCE) developed a guideline about routine preoperative testing in adults undergoing elective non-cardiothoracic surgery. The guideline is intended for all care providers involved in the preoperative and perioperative management (incl. anesthesiologists, surgeons, cardiologists, lung specialists, radiologists, clinical biologists, general practitioners, etc). METHOD: A recent English guideline published by NICE (National Institute for Health and Care Excellence) was used as a starting point and adapted to the Belgian context...
2018: Revue Médicale de Bruxelles
https://www.readbyqxmd.com/read/29720744/peripartum-haemorrhage-diagnosis-and-therapy-guideline-of-the-dggg-oeggg-and-sggg-s2k-level-awmf-registry-no-015-063-march-2016
#19
Dietmar Schlembach, Hanns Helmer, Wolfgang Henrich, Christian von Heymann, Franz Kainer, Wolfgang Korte, Maritta Kühnert, Heiko Lier, Holger Maul, Werner Rath, Susanne Steppat, Daniel Surbek, Jürgen Wacker
Purpose: This is an official interdisciplinary guideline, published and coordinated by the German Society of Gynaecology and Obstetrics (DGGG), the Austrian Society of Gynaecology and Obstetrics (OEGGG) and the Swiss Society of Gynaecology and Obstetrics (SGGG). The guideline was developed for use in German-speaking countries and is backed by the German Society of Anaesthesiology and Intensive Medicine (DGAI), the Society of Thrombosis and Haemostasis Research (GTH) and the German Association of Midwives...
April 2018: Geburtshilfe und Frauenheilkunde
https://www.readbyqxmd.com/read/29720054/newly-proposed-sepsis-induced-coagulopathy-precedes-international-society-on-thrombosis-and-haemostasis-overt-disseminated-intravascular-coagulation-and-predicts-high-mortality
#20
Toshiaki Iba, Makoto Arakawa, Marcello Di Nisio, Satoshi Gando, Hideaki Anan, Koichi Sato, Yutaka Ueki, Jerrold H Levy, Jecko Thachil
BACKGROUND: Disseminated intravascular coagulation (DIC) has been recognized as an urgent and critical condition in patients with sepsis. Therefore, unfamiliar and time-consuming tests or a complex scoring system are not suitable for diagnosis. Sepsis-induced coagulopathy (SIC), a newly proposed category delineated by a few global coagulation tests, has been established as an early warning sign for DIC. The purpose of this study was to elucidate the characteristics of SIC, especially in relation to the score of the International Society on Thrombosis and Haemostasis (ISTH) for overt DIC...
January 1, 2018: Journal of Intensive Care Medicine
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