keyword
MENU ▼
Read by QxMD icon Read
search

thrombin generation

keyword
https://www.readbyqxmd.com/read/28437748/rational-and-timely-haemostatic-interventions-following-cardiac-surgery-coagulation-factor-concentrates-or-blood-bank-products
#1
Mariann Tang, Christian Fenger-Eriksen, Per Wierup, Jacob Greisen, Jørgen Ingerslev, Vibeke Hjortdal, Benny Sørensen
BACKGROUND: Cardiac surgery may cause a serious coagulopathy leading to increased risk of bleeding and transfusion demands. Blood bank products are commonly first line haemostatic intervention, but has been associated with hazardous side effect. Coagulation factor concentrates may be a more efficient, predictable, and potentially a safer treatment, although prospective clinical trials are needed to further explore these hypotheses. This study investigated the haemostatic potential of ex vivo supplementation of coagulation factor concentrates versus blood bank products on blood samples drawn from patients undergoing cardiac surgery...
April 5, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28433626/thrombin-impairs-human-endometrial-endothelial-angiogenesis-implications-for-progestin-only-contraceptive-induced-abnormal-uterine-bleeding
#2
John P Shapiro, Ozlem Guzeloglu-Kayisli, Umit A Kayisli, Nihan Semerci, S Joseph Huang, Sefa Arlier, Kellie Larsen, Paolo Fadda, Frederick Schatz, Charles J Lockwood
OBJECTIVE: Progestin-only contraceptives induce abnormal uterine bleeding, accompanied by pro-thrombin leakage from dilated endometrial microvessels and increased thrombin generation by human endometrial stromal cell (HESC)-expressed tissue factor. Initial studies of the thrombin-treated HESC secretome identified elevated levels of cleaved chondroitin sulfate proteoglycan 4 (CSPG4), impairing pericyte-endothelial interactions. Thus, we investigated direct and CSPG4-mediated effects of thrombin in eliciting abnormal uterine bleeding by disrupting endometrial angiogenesis...
April 19, 2017: Contraception
https://www.readbyqxmd.com/read/28431186/unfractionated-heparin-versus-low-molecular-weight-heparins-for-avoiding-heparin-induced-thrombocytopenia-in-postoperative-patients
#3
REVIEW
Daniela R Junqueira, Liliane M Zorzela, Edson Perini
BACKGROUND: Heparin-induced thrombocytopenia (HIT) is an adverse drug reaction presenting as a prothrombotic disorder related to antibody-mediated platelet activation. It is a paradoxical immune reaction resulting in thrombin generation in vivo, which leads to a hypercoagulable state and the potential to initiate venous or arterial thrombosis. A number of factors are thought to influence the incidence of HIT including the type and preparation of heparin (unfractionated heparin (UFH) or low molecular weight heparin (LMWH)) and the heparin-exposed patient population, with the postoperative patient population at higher risk...
April 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28431006/regulation-of-oxidized-platelet-lipidome-implications-for-coronary-artery-disease
#4
Madhumita Chatterjee, Dominik Rath, Jörg Schlotterbeck, Johannes Rheinlaender, Britta Walker-Allgaier, Nada Alnaggar, Monika Zdanyte, Iris Müller, Oliver Borst, Tobias Geisler, Tilman E Schäffer, Michael Lämmerhofer, Meinrad Gawaz
Aims: Hyperlipidaemia enhances susceptibility to thrombosis, while platelet oxidixed LDL (oxLDL) binding in acute coronary syndrome (ACS) correlates with activation status. This study explores the platelet lipidome in symptomatic coronary artery disease (CAD) patients and the functional consequences of the chemokine CXCL12 and its receptors CXCR-4/-7 on lipid uptake in platelets. Methods and results: Platelet-oxLDL detected by flow cytometry was enhanced (P = 0...
April 18, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28430966/decreased-thromboembolic-stroke-but-not-atherosclerosis-or-vascular-remodeling-in-mice-with-rock2-deficient-platelets
#5
Nikola Sladojevic, Goo Taeg Oh, Hyung-Hwan Kim, Lea M Beaulieu, Hervé Falet, Karol Kaminski, Jane E Freedman, James K Liao
Aims: Rho-associated coiled-coil containing kinase (ROCK)-2 is an important mediator of the actin cytoskeleton. Because changes in the actin cytoskeleton are critical for platelet function, we hypothesized that ROCK2 in platelets will play important role in thrombosis and can be potentially a target for therapeutic intervention in thromboembolic stroke. Methods and Results: We generated platelet-specific ROCK2-deficient mice (ROCK2 Plt-/- ) from conditional ROCK2 fl°x/fl°x and platelet factor (PF)-4-Cre transgenic mice...
April 14, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28430367/effect-of-dalteparin-administration-on-thrombin-generation-kinetics-in-healthy-dogs
#6
Carolyn Gara-Boivin, Jérôme R E Del Castillo, Marilyn E Dunn, Christian Bédard
BACKGROUND: Dalteparin is used to prevent thrombotic complications in dogs. Measurement of anti-factor Xa (anti-FXa) activity is currently used for monitoring therapy, but remains a nonfunctional test. The calibrated automated thrombogram (CAT) could be a suitable approach for functional monitoring. OBJECTIVES: We hypothesized that the CAT will detect decreased endogenous thrombin potential (ETP) in healthy dogs receiving dalteparin. METHODS: Twenty-four healthy adult Beagles were randomly allocated to 4 equal groups...
April 21, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28429213/effect-of-compound-sbt-828-a-new-indole-derivative-exhibiting-antiaggregant-activity-on-the-prostacyclin-thromboxane-a2-balance
#7
A F Kucheryavenko, A A Spasov, M Tian, K F Suzdalev
We investigated the effect of a new indole derivative Sbt-828 with antiaggregant properties on prostacyclin-generating activity of the vascular wall and thromboxane A2 level in platelets of intact rats. The substance under study did not affect prostacyclin production by the vascular wall and significantly reduced thromboxane A2 level, being superior to the reference drug acetylsalicylic acid by 1.6 times, as seen from reduced malonic dialdehyde level in the thrombin-induced rat platelets.
April 20, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28429138/prothrombotic-state-in-asthma-is-related-to-increased-levels-of-inflammatory-cytokines-il-6-and-tnf%C3%AE-in-peripheral-blood
#8
Stanislawa Bazan-Socha, Lucyna Mastalerz, Agnieszka Cybulska, Lech Zareba, Romy Kremers, Michal Zabczyk, Grazyna Pulka, Teresa Iwaniec, Coenraad Hemker, Anetta Undas
Recently, we have reported that asthma is associated with enhanced plasma thrombin formation and impaired fibrinolysis. The mechanisms underlying the prothrombotic state in this disease are unknown. Our aim was to investigate whether prothrombotic alterations in asthmatics are associated with inflammation. We studied 164 adult, white, stable asthmatics and 72 controls matched for age, sex, body mass index (BMI), and smoking. Plasma tumor necrosis factor α (TNFα), interleukin (IL)-6, and serum periostin were evaluated using ELISAs, and their associations with thrombin generation, fibrinolytic capacity, expressed as clot lysis time (CLT), and platelet markers were later analyzed...
April 20, 2017: Inflammation
https://www.readbyqxmd.com/read/28424818/dose-requirements-for-idarucizumab-reversal-of-dabigatran-in-a-lethal-porcine-trauma-model-with-continuous-bleeding
#9
Markus Honickel, Henri M Spronk, Rolf Rossaint, Christian Stoppe, Joanne van Ryn, Hugo Ten Cate, Oliver Grottke
Idarucizumab is licensed for emergency reversal of dabigatran. A single 5 g dose is usually sufficient, but higher doses may sometimes be required and optimum dosing has not been defined. It was the aim of this study to investigate the effect of idarucizumab, given once or as a split dose, after double trauma in pigs anticoagulated with dabigatran. Dabigatran etexilate (30 mg/kg bid) was given to 18 male pigs orally for 3 days. On day 4, animals were randomised 1:1:1 to receive idarucizumab 60+0, 60+60 or 120+0 mg/kg...
April 20, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28424276/thrombin-induced-podocyte-injury-is-protease-activated-receptor-dependent
#10
Ruchika Sharma, Amanda P Waller, Shipra Agrawal, Katelyn J Wolfgang, Hiep Luu, Khurrum Shahzad, Berend Isermann, William E Smoyer, Marvin T Nieman, Bryce A Kerlin
Nephrotic syndrome is characterized by massive proteinuria and injury of specialized glomerular epithelial cells called podocytes. Studies have shown that, whereas low-concentration thrombin may be cytoprotective, higher thrombin concentrations may contribute to podocyte injury. We and others have demonstrated that ex vivo plasma thrombin generation is enhanced during nephrosis, suggesting that thrombin may contribute to nephrotic progression. Moreover, nonspecific thrombin inhibition has been shown to decrease proteinuria in nephrotic animal models...
April 19, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28414934/blood-clot-parameters-thromboelastography-and-scanning-electron-microscopy-in-research-and-clinical-practice
#11
Etheresia Pretorius, Albe C Swanepoel, Sulette DeVilliers, Janette Bester
BACKGROUND: Clotting parameters are informative of overall haematological healthiness of an individual. Particularly, clotting parameters can be used as a measure of the degree of pathology of the coagulation system. Thromboelastography (TEG) is a well-known technique that is an important point-of-care method, as well as research method. Scanning electron microscopy (SEM) is a novel research method, but with possible clinical application. However, there are no clear standardized guidelines for TEG and SEM result interpretation...
April 11, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28413976/laboratory-monitoring-or-measurement-of-direct-oral-anticoagulants-doacs-advantages-limitations-and-future-challenges
#12
Emmanuel J Favaloro, Leonardo Pasalic, Jennifer Curnow, Giuseppe Lippi
BACKGROUND: The Direct Oral Anticoagulants (DOACs) represent a new generation of antithrombotic agents, providing direct inhibition of either thrombin (factor IIa; FIIa) or activated factor X (FXa). Around the globe, their use is progressively rising, as these new agents replace the historical anticoagulants (heparin and vitamin K antagonists including warfarin) for various clinical conditions in medical practice. Other acronyms used to designate DOACs include TSOAC (target specific oral anticoagulants) and NOAC (novel; or non-vitamin K antagonist oral anticoagulants)...
April 17, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28413832/statistical-analysis-plan-for-the-woman-etaplat-study-effect-of-tranexamic-acid-on-platelet-function-and-thrombin-generation
#13
Kastriot Dallaku, Haleema Shakur, Phil Edwards, Danielle Beaumont, Ian Roberts, Sumaya Huque, Maria Delius, Ulrich Mansmann
Background. Postpartum haemorrhage (PPH) is a potentially life-threatening complication for women, and the leading cause of maternal mortality. Tranexamic acid (TXA) is an antifibrinolytic used worldwide to treat uterine haemorrhage and to reduce blood loss in general surgery. TXA may have effects on thrombin generation, platelet function and coagulation factors as a result of its inhibition on the plasmin. Methods. WOMAN ETAPlaT is a sub-study of the World Maternal Antifibrinolitic trial (WOMAN trial). All adult women clinically diagnosed with PPH after a vaginal delivery or caesarean section, are eligible for inclusion in the study...
December 15, 2016: Wellcome Open Research
https://www.readbyqxmd.com/read/28411820/thrombin-aptasensor-enabled-by-pt-nanoparticles-functionalized-co-based-metal-organic-frameworks-assisted-electrochemical-signal-amplification
#14
Yang Yang, Zhehan Yang, Jiajia Lv, Ruo Yuan, Yaqin Chai
In this work, a Pt nanoparticles-functionalized Co-based metal organic frameworks (PtNPs@Co(II)MOFs@PtNPs) was synthesized and applied in electrochemical aptasensor for thrombin (TB) detection. First, the Co(II)MOFs@PtNPs were prepared via the mixed solvothermal method, which consists of inner Pt nanoparticles (PtNPs) encapsulated by aminofunctionalized Co(II)MOFs materials. Following that, additional PtNPs were adsorbed on the surface of Co(II)MOFs@PtNPs, resulting in the formation of PtNPs@Co(II)MOFs@PtNPs nanocomposite...
July 1, 2017: Talanta
https://www.readbyqxmd.com/read/28410617/treatment-with-high-dose-n-3-pufas-has-no-effect-on-platelet-function-coagulation-metabolic-status-or-inflammation-in-patients-with-atherosclerosis-and-type-2-diabetes
#15
Malgorzata Poreba, Magdalena Mostowik, Aleksander Siniarski, Renata Golebiowska-Wiatrak, Krzysztof Piotr Malinowski, Maciej Haberka, Ewa Konduracka, Jadwiga Nessler, Anetta Undas, Grzegorz Gajos
BACKGROUND: Despite numerous studies on cardioprotective effects of omega-3 polyunsaturated fatty acids (n-3 PUFAs), there is limited evidence for n-3 PUFA-mediated effects, especially at its higher dose, on cardiovascular risk in patients with type 2 diabetes (DM2) and established atherosclerosis. PURPOSE: To investigate the effect of daily treatment with a higher dose (2 g) of n-3 PUFAs on platelet function, coagulation parameters, fibrin clot properties, markers of systemic inflammation and metabolic status, in patients with atherosclerotic vascular disease and DM2 who receive optimal medical therapy...
April 14, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28410150/platelet-toll-like-receptors-in-thromboinflammation
#16
Lina Paola D' Atri, Mirta Schattner
Besides their undiscussed role in hemostasis and thrombosis, platelets are also key effector cells capable of assisting and modulating inflammatory reactions and immune responses. Platelets play a sentinel role in immune surveillance by recognizing danger signals from pathogens and cell damage through the expression of toll-like receptors (TLRs) on its surface and internal compartments. Platelets express all 10 TLRs transcripts and its signalosome, including adaptor proteins and transcription factors. The activation of these receptors in platelets triggers hemostatic and inflammatory responses which participate in the host's response to bacterial and viral infections, linking thrombosis with infection and immunity...
June 1, 2017: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28409836/platelet-derived-microparticles-regulates-thrombin-generation-via-phophatidylserine-in-abdominal-sepsis
#17
Yongzhi Wang, Su Zhang, Lingtao Luo, Eva Norström, Oscar Ö Braun, Matthias Mörgelin, Henrik Thorlacius
Sepsis is associated with dysfunctional coagulation. Recent data suggest that platelets play a role in sepsis by promoting neutrophil accumulation. Herein, we show that cecal ligation and puncture (CLP) triggered systemic inflammation, which is characterized by formation of IL-6 and CXC chemokines as well as neutrophil accumulation in the lung. Platelet depletion decreased neutrophil accumulation, IL-6 and CXC chemokines formation in septic lungs. Depletion of platelets increased peak thrombin formation and total thrombin generation (TG) in plasma from septic animals...
April 14, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28408374/expression-of-biglycan-in-first-trimester-chorionic-villous-sampling-placental-samples-and-altered-function-in-telomerase-immortalized-microvascular-endothelial-cells
#18
Amy Chui, Tilini Gunatillake, Shaun P Brennecke, Vera Ignjatovic, Paul T Monagle, John M Whitelock, Dagmar E van Zanten, Jasper Eijsink, Yao Wang, James Deane, Anthony J Borg, Janet Stevenson, Jan Jaap Erwich, Joanne M Said, Padma Murthi
OBJECTIVE: Biglycan (BGN) has reduced expression in placentae from pregnancies complicated by fetal growth restriction (FGR). We used first trimester placental samples from pregnancies with later small for gestational age (SGA) infants as a surrogate for FGR. The functional consequences of reduced BGN and the downstream targets of BGN were determined. Furthermore, the expression of targets was validated in primary placental endothelial cells isolated from FGR or control pregnancies. APPROACH AND RESULTS: BGN expression was determined using real-time polymerase chain reaction in placental tissues collected during chorionic villous sampling performed at 10 to 12 weeks' gestation from pregnancies that had known clinical outcomes, including SGA...
April 13, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28406575/monitoring-once-weekly-recombinant-factor-ix-prophylaxis-in-hemophilia-b-with-thrombin-generation-assay-and-factor-ix-activity
#19
V Nummi, A Jouppila, R Lassila
INTRODUCTION: Prophylaxis is the recommended treatment mode for severe hemophilia B. However, no single treatment regimen fits for all patients. Once-weekly prophylaxis with high-dose recombinant factor IX (rFIX) is efficacious, nevertheless, laboratory outcomes following 72 h after administration are lacking. METHODS: In a prospective open-label noncomparative study, 10 severe/moderate (FIX ≤2 IU/dL) adult patients received rFIX dose (60-100 IU/kg) after >72 h washout on two occasions, separated by 7 days...
April 13, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28405673/gly74ser-mutation-in-protein-c-causes-thrombosis-due-to-a-defect-in-protein-s-dependent-anticoagulant-function
#20
Changming Chen, Likui Yang, Bruno O Villoutreix, Xuefeng Wang, Qiulan Ding, Alireza R Rezaie
Protein C is a vitamin K-dependent serine protease zymogen in plasma which upon activation by thrombin in complex with thrombomodulin (TM) down-regulates the clotting cascade by a feedback loop inhibition mechanism. Activated protein C (APC) exerts its anticoagulant function through protein S-dependent degradation of factors Va and VIIIa. We recently identified a venous thrombosis patient whose plasma level of protein C antigen is normal, but its anticoagulant activity is only 34 % of the normal level. Genetic analysis revealed that the proband and her younger brother carry a novel heterozygous mutation c...
April 13, 2017: Thrombosis and Haemostasis
keyword
keyword
34691
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"