keyword
MENU ▼
Read by QxMD icon Read
search

Tissue factor, coagulation

keyword
https://www.readbyqxmd.com/read/28807241/the-impact-of-radiofrequency-assisted-transection-on-local-hepatic-recurrence-after-resection-of-colorectal-liver-metastases
#1
R Quesada, A Moreno, I Poves, E Berjano, L Grande, F Burdío
Resection is the gold standard in the treatment of liver metastases from colorectal cancer. An internal cooled radiofrequency electrode was described to achieve tissue coagulation to a greater margin width. The aim of this study is to determinate if a RF-assisted transection device (RFAT) has any effect on local hepatic recurrence (LHER) compared to conventional technologies. A study population of 103 patients who had undergone a hepatic surgical resection was retrospectively analysed. Patients were classified into two groups according to the device used: a RF-assisted device (RFAT group; n = 45) and standard conventional devices (control group; n = 58)...
September 2017: Surgical Oncology
https://www.readbyqxmd.com/read/28804852/the-overall-hemostatic-potential-ohp-assay
#2
Jennifer Curnow
The principle of the overall hemostatic potential (OHP) assay is the generation of a fibrin time curve by optical density readings, which represent the balance between fibrin generation, triggered by thrombin or tissue factor, and fibrinolysis, triggered by tissue plasminogen activator (tPA). OHP measures the integrated effect of procoagulant, anticoagulant, and fibrinolytic factors, and OHP assay parameters provide a means of quantifying both the coagulation and fibrinolytic potential of platelet poor plasma...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28802974/characteristics-of-thrombin-generation-in-a-fulminant-porcine-sepsis-model
#3
Judit Tóth, Ildikó Beke Debreceni, Ádám Deák, Katalin Pető, Mariann Berhés, Endre Hajdú, Judit Szabó, Norbert Németh, Béla Fülesdi, János Kappelmayer
INTRODUCTION: The activation of blood coagulation has been demonstrated in most cases of sepsis, however previous studies in humans could not detect hypercoagulability with global hemostasis assays. In a fulminant porcine sepsis model we analysed coagulation screening tests and thrombin generation to evaluate hemostatic alterations. MATERIALS AND METHODS: Live Escherichia coli bacteria were inoculated to female pigs and prothrombin time, activated partial thromboplastin time, thrombin time and fibrinogen were measured by coagulometry...
August 1, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28799584/molecular-determinants-involved-in-differential-behaviour-between-soluble-tissue-factor-and-full-length-tissue-factor-towards-factor-viia
#4
Ramesh Prasad, Prosenjit Sen
During blood-coagulation, the transmembrane protein tissue factor (TF) binds to its ligand, factor (F)VII, activating and allosterically modifying it to form a mature active binary complex (TF-FVIIa). Although the extracellular domain of TF (sTF) can bind to FVII, it fails to activate it. Binding of TF with FVIIa only partially enhances FVIIa proteolytic activity. Our previous kinetic study revealed that sTF has a lower binding capacity with FVIIa compared to membrane bound full-length (fl)TF. The reason behind this incapability of FVII activation and reduced catalytic activity remains unexplored due to the lack of an flTF crystal structure...
August 11, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28796276/colistin-dampens-fibrinolysis-and-endothelial-activation-during-endotoxaemia-a-randomised-double-blind-trial
#5
Christian Schoergenhofer, Peter Matzneller, Marion Mußbacher, Johannes A Schmid, Petra Jilma-Stohlawetz, Markus Zeitlinger, Bernd Jilma
Colistin electrostatically interacts with lipopolysaccharides (LPS). Pre-clinical studies demonstrated beneficial effects of colistin on LPS-induced coagulation and fibrinolysis. The objective of this trial was to investigate the effects of colistin during experimental endotoxaemia. In this randomised, double-blind, placebo-controlled, crossover trial 16 healthy volunteers received a 2 ng/kg LPS bolus after infusion of 2.5 million IU colistin or placebo. Plasma levels of F1+2 prothrombin fragments, thrombin-antithrombin complexes (TAT), von Willebrand factor antigen levels (vWF), E-selectin, plasmin-antiplasmin complexes (PAP), tissue-type plasminogen activator (t-PA) antigen and activity, plasminogen activator inhibitor-1 (PAI-1) were measured...
August 10, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28782177/lipid-specificity-of-the-membrane-binding-domain-of-coagulation-factor-x
#6
Melanie P Muller, Yan Wang, James H Morrissey, Emad Tajkhorshid
BACKGROUND: Factor X (FX) binds to cell membranes in a highly phospholipid-dependent manner and, in complex with tissue factor and factor VIIa (FVIIa), initiates the clotting cascade. Experimental information concerning the membrane-bound structure of FX with atomic resolution has remained elusive due to the fluid nature of cellular membranes. FX is known to bind preferentially to phosphatidylserine (PS). OBJECTIVES: To develop the first membrane-bound model of FX-GLA domain to PS at atomic level, and to identify PS-specific binding sites of FX-GLA domain...
August 7, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28774197/thrombotic-and-hemorrhagic-conditions-due-to-a-gain-of-function-of-coagulation-proteins-a-special-type-of-clotting-disorders
#7
Antonio Girolami, Elisabetta Cosi, Silvia Ferrari, Annamaria Lombardi, Fabrizio Fabris
Coagulation disorders can be classified into 2 types, namely, type I and type II. In the former, there is a concomitant decrease in factor activity and antigen (activity-antigen ratio is 1), whereas in the latter, there is a discrepancy between factor activity which is always low and antigen which is normal or near normal (activity-antigen ratio is <1, eg, 0.5). Recently, several gain-of-function disorders have been described. These are characterized by an increased activity with respect to the antigen level...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28766731/microparticles-from-stored-red-blood-cells-enhance-procoagulant-and-proinflammatory-activity
#8
Dania Fischer, Julian Büssow, Patrick Meybohm, Christian Friedrich Weber, Kai Zacharowski, Anja Urbschat, Markus Matthias Müller, Carla Jennewein
BACKGROUND: The pathomechanisms of morbidity due to blood transfusions are not yet entirely understood. Elevated levels of red blood cell-derived microparticles (RMPs) are found in coagulation-related pathologies and also in stored blood. Previous research has shown that RMPs mediate transfusion-related complications by the intrinsic pathway. We hypothesized that RMPs might play a role in post-transfusion thrombotic complications by enhancing procoagulant activity also through the extrinsic pathway of coagulation...
August 2, 2017: Transfusion
https://www.readbyqxmd.com/read/28762633/platelet-activation-and-clotting-cascade-activation-by-dialyzers-designed-for-high-volume-online-hemodiafiltration
#9
Kamonwan Tangvoraphonkchai, Anne Riddell, Andrew Davenport
INTRODUCTION: Hemodialysis patients are pro-thrombotic. Higher volume online postdilutional hemodiafiltration (OL-HDF), with increasing hematocrit increases the risk of clotting in the extracorporeal circuit (ECC). We wished to determine whether OL-HDF increased platelet activation and ECC clotting. METHODS: Coagulation parameters, platelet, white cell, and endothelial activation markers were measured at the start and end of dialysis sessions in 10 patients and also pre- and post-dialyzer after 15 minutes using two different dialyzers designed for high volume OL-HDF; cellulose triacetate (TAGP) and polysulphone (PS), and polyvinylpyrrolidone (PVP)...
August 1, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28758160/sphingomyelin-encrypts-tissue-factor-atp-induced-activation-of-a-smase-leads-to-tissue-factor-decryption-and-microvesicle-shedding
#10
Jue Wang, Usha R Pendurthi, L Vijaya Mohan Rao
A majority of tissue factor (TF) on cell surfaces exists in an encrypted state with minimal to no procoagulant activity. At present, it is unclear whether limited availability of phosphatidylserine (PS) and/or a specific membrane lipid in the outer leaflet of the plasma membrane contributes to TF encryption. Sphingomyelin (SM) is a major phospholipid in the outer leaflet, and SM metabolism is shown to be altered in many disease settings that cause thrombotic disorders. The present study is carried out to investigate the effect of SM metabolism on TF activity and TF(+) microvesicles (MVs) release...
May 23, 2017: Blood Advances
https://www.readbyqxmd.com/read/28754863/pathological-expression-of-tissue-factor-confers-promising-antitumor-response-to-a-novel-therapeutic-antibody-sc1-in-triple-negative-breast-cancer-and-pancreatic-adenocarcinoma
#11
Xuesai Zhang, Qingrou Li, Hui Zhao, Lanping Ma, Tao Meng, Jianchang Qian, Rui Jin, Jingkang Shen, Ker Yu
The pathological presence of tissue factor (TF) in cancer cells promotes tumor-initiated thrombosis and cancer metastasis. We found that TF is aberrantly present in large percentage of aggressive triple negative breast cancer (TNBC) and pancreatic adenocarcinoma (PaC), two most lethal forms of malignancy that urgently need effective treatment. TF expression in TNBC clustered with higher levels of vimentin, basal-type keratins KRT5/14 and caveolin-1 but lower levels of luminal-type biomarkers. We developed a novel and specific anti-TF therapeutic antibody SC1, which displayed an exceedingly high potency against TF extracellular domain (EC50: 0...
July 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28750085/orphan-nuclear-receptor-err%C3%AE-is-a-key-regulator-of-human-fibrinogen-gene-expression
#12
Yaochen Zhang, Don-Kyu Kim, Yan Lu, Yoon Seok Jung, Ji-Min Lee, Young-Hoon Kim, Yong Soo Lee, Jina Kim, Bedair Dewidar, Won-Il Jeong, In-Kyu Lee, Sung Jin Cho, Steven Dooley, Chul-Ho Lee, Xiaoying Li, Hueng-Sik Choi
Fibrinogen, 1 of 13 coagulation factors responsible for normal blood clotting, is synthesized by hepatocytes. Detailed roles of the orphan nuclear receptors regulating fibrinogen gene expression have not yet been fully elucidated. Here, we identified estrogen-related receptor gamma (ERRγ) as a novel transcriptional regulator of human fibrinogen gene expression. Overexpression of ERRγ specially increased fibrinogen expression in human hepatoma cell line. Cannabinoid receptor types 1(CB1R) agonist arachidonyl-2'-chloroethylamide (ACEA) up-regulated transcription of fibrinogen via induction of ERRγ, whereas knockdown of ERRγ attenuated fibrinogen expression...
2017: PloS One
https://www.readbyqxmd.com/read/28749986/the-role-of-the-tissue-factor-and-its-inhibitor-in-the-development-of-subclinical-atherosclerosis-in-people-living-with-hiv
#13
Katarzyna Barska, Wiesława Kwiatkowska, Brygida Knysz, Katarzyna Arczyńska, Maciej Karczewski, Wojciech Witkiewicz
INTRODUCTION: HIV infection is associated with an increased risk of cardiovascular disease in connection with atherosclerosis and thromboembolic complications. The pathogenesis of atherosclerosis is still unclear in this group of patients. Studies on pathogenesis of atherosclerosis in the general population emphasize the role of the extrinsic pathway of blood coagulation, particularly the tissue factor (TF) and tissue factor pathway inhibitor (TFPI). The effect of persistent activation of the immune system on enhanced expression of TF on the surface of monocytes in subjects infected with HIV is known to be correlated with the level of HIV RNA in blood serum...
2017: PloS One
https://www.readbyqxmd.com/read/28748351/pig-tissue-factor-pathway-inhibitor-%C3%AE-fusion-immunoglobulin-inhibits-pig-tissue-factor-activity-in-human-plasma-moderately-more-efficiently-than-the-human-counterpart
#14
Chang-Yong Choi, Yeon-Hui Kim, Joonbeom Bae, Suk Jun Lee, Hyun Kyung Kim, Chung-Gyu Park, Taehoon Chun
OBJECTIVE: To determine the efficacy of soluble pig tissue factor pathway inhibitor fusion immunoglobulin (TFPI-Ig) in blocking pig to human xenogeneic blood coagulation. RESULTS: To generate pig TFPI-Ig or human TFPI-Ig, expression vector containing cDNA encoding pig TFPIα or human TFPIα combined with human constant Ig heavy chain region was cloned and introduced into CHO cells. After purification of pig TFPI-Ig and human TFPI-Ig, the inhibition of each recombinant protein on pig tissue factor (TF)-mediated blood coagulation was examined in human plasma...
July 26, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28747771/different-potential-of-extracellular-vesicles-to-support-thrombin-generation-contributions-of-phosphatidylserine-tissue-factor-and-cellular-origin
#15
Carla Tripisciano, René Weiss, Tanja Eichhorn, Andreas Spittler, Thomas Heuser, Michael Bernhard Fischer, Viktoria Weber
Cells release diverse types of vesicles constitutively or in response to proliferation, injury, inflammation, or stress. Extracellular vesicles (EVs) are crucial in intercellular communication, and there is emerging evidence for their roles in inflammation, cancer, and thrombosis. We investigated the thrombogenicity of platelet-derived EVs, which constitute the majority of circulating EVs in human blood, and assessed the contributions of phosphatidylserine and tissue factor exposure on thrombin generation. Addition of platelet EVs to vesicle-free human plasma induced thrombin generation in a dose-dependent manner, which was efficiently inhibited by annexin V, but not by anti-tissue factor antibodies, indicating that it was primarily due to the exposure of phosphatidylserine on platelet EVs...
July 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28747025/platelet-function-and-microparticle-levels-in-atrial-fibrillation-changes-during-the-acute-episode
#16
Line Pourtau, Jean Marc Sellal, Romaric Lacroix, Philippe Poncelet, Olivier Bernus, Gisèle Clofent-Sanchez, Mélèze Hocini, Michel Haïssaguerre, Françoise Dignat-George, Frédéric Sacher, Paquita Nurden
BACKGROUND: Thrombotic risk constitutes a major complication of atrial fibrillation (AF). Platelets and microparticles (MPs) are important for hemostasis and thrombosis, however their participation during AF is not well known. The aim of this study was to characterize platelet function and MPs procoagulant and fibrinolytic activity in AF patients and to determine the effects of an acute-AF episode. METHODS: Blood was collected from paroxysmal (21) and persistent (16) AF patients referred for AF catheter ablation...
September 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28744150/radiofrequency-ablation-using-barrx-%C3%A2-for-the-endoscopic-treatment-of-gastric-antral-vascular-ectasia-a-series-of-three-cases-and-a-review-of-the-literature-on-treatment-options
#17
Anish Patel, Sunil Patel, Prasanna C Wickremesinghe, Deepak Vadada
Gastric antral vascular ectasia (GAVE), also known as "watermelon stomach", is an uncommon condition, which can cause gastrointestinal bleeding due to rupture of blood vessels that line the stomach. The pathogenesis of GAVE remains unclear; however it is thought that hemodynamic changes, mechanical stress, and autoimmune factors all have a part to play. A range of conditions are also commonly associated with the syndrome, such as portal hypertensive gastropathy, liver cirrhosis, and autoimmune disorders. Less commonly, chronic renal failure, cardiac diseases, and bone marrow transplantation have coexisted with GAVE...
2017: Clinical and Experimental Gastroenterology
https://www.readbyqxmd.com/read/28742614/compression-socks-worn-during-flight-and-hemostatic-balance-in-boston-marathon-runners-on-oral-contraceptives
#18
Beth A Taylor, Amanda L Zaleski, Kevin D Ballard, Gregory A Panza, Antonio B Fernandez, Lauren Corso, Linda S Pescatello, Aaron L Baggish, Christopher Troyanos, Paul D Thompson
OBJECTIVE: To investigate the effect of oral contraceptive (OC) use and compression socks on hemostatic activation in women flying cross-country to and from a marathon. DESIGN: Prospective study. SETTING: 2015 Boston Marathon. PARTICIPANTS: Women were divided into non-OC using (CONTROL; n = 12), OC-using (OC; n = 15), and OC-using plus compression sock (OC + SOCK; n = 14) groups. INTERVENTION: Women in OC + SOCK wore compression socks during flights to and from the marathon...
July 21, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28738008/randomized-placebo-controlled-study-of-the-effects-of-yunnan-baiyao-on-hemostasis-in-horses
#19
SallyAnne L Ness, Amelia H Frye, Thomas J Divers, Mark Rishniw, Hollis N Erb, Marjory B Brooks
OBJECTIVE To determine effects of oral administration of Yunnan Baiyao on platelet activation, coagulation, and fibrinolysis in healthy horses. ANIMALS 12 healthy adult horses. PROCEDURES In a randomized blinded crossover study that included a 4-week washout period between treatments, horses were orally administered a paste containing Yunnan Baiyao (15 mg/kg) or placebo at 12-hour intervals for 3 days. Blood samples were collected before start of treatment (time 0) and at 24 and 72 hours for a CBC, measurement of fibrinogen concentration, coagulation screening tests, and a panel of assays to assess platelet activation (including ADP- and collagen-induced aggregation and closure times, flow-cytometric variables of platelet-leukocyte aggregates, platelet membrane P-selectin and phosphatidylserine expression, and microparticle release), von Willebrand factor (vWF) concentration, and cofactor activity...
August 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28734839/recombinant-expression-of-ixolaris-a-kunitz-type-inhibitor-from-the-tick-salivary-gland-for-nmr-studies
#20
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...
July 19, 2017: Protein Expression and Purification
keyword
keyword
15856
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"