keyword
MENU ▼
Read by QxMD icon Read
search

Thrombosis models

keyword
https://www.readbyqxmd.com/read/27913487/venous-thromboembolism-and-stroke-in-pregnancy
#1
Kelley McLean, Mary Cushman
Pregnancy and the postpartum period substantially increase the risk for thrombotic events. Although the absolute risk for thrombosis is low, these events comprise a significant portion of maternal morbidity and mortality. The vast majority of such events are venous, although the risk for ischemic stroke also appears to be increased in pregnancy. This review will explore the overlapping and unique risk factors for venous and arterial thrombosis in pregnancy. Diagnosis and prevention will be discussed, and treatment will be briefly touched on...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913237/combined-use-of-intravenous-and-topical-versus-intravenous-tranexamic-acid-in-primary-total-joint-arthroplasty-a-meta-analysis-of-randomized-controlled-trials
#2
REVIEW
Xue-Qin Zhang, Jie Ni, Wei-Hong Ge
OBJECTIVE: To compare the safety and efficacy of combined use of intravenous and topical (combined group) tranexamic acid (TXA) with that of intravenous tranexamic acid (IV group) in primary total joint arthroplasty (TJA). METHODS: Literature was searched in PubMed, Cochrane Library, Embase, Medline, and China National Knowledge Infrastructure (CNKI) databases. Only randomized controlled trials (RCTs) were included in our study. Data were using fixed-effects or random-effects models with standard mean differences and risk ratios for continuous and dichotomous variables, respectively...
November 29, 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/27911412/reproducible-arterial-denudation-injury-by-infrarenal-abdominal-aortic-clamping-in-a-murine-model
#3
Aditya S Shirali, Austin I McDonald, Julia J Mack, M Luisa Iruela-Arispe
Percutaneous vascular interventions uniformly result in arterial denudation injuries that subsequently lead to thrombosis and restenosis. These complications can be attributed to impairments in re-endothelialization within the wound margins. Yet, the cellular and molecular mechanisms of re-endothelialization remain to be defined. While several animal models to study re-endothelialization after arterial denudation are available, few are performed in the mouse because of surgical limitations. This undermines the opportunity to exploit transgenic mouse lines and investigate the contribution of specific genes to the process of re-endothelialization...
November 24, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27905492/high-fidelity-computational-simulation-of-thrombus-formation-in-thoratec-heartmate-ii-continuous-flow-ventricular-assist-device
#4
Wei-Tao Wu, Fang Yang, Jingchun Wu, Nadine Aubry, Mehrdad Massoudi, James F Antaki
Continuous flow ventricular assist devices (cfVADs) provide a life-saving therapy for severe heart failure. However, in recent years, the incidence of device-related thrombosis (resulting in stroke, device-exchange surgery or premature death) has been increasing dramatically, which has alarmed both the medical community and the FDA. The objective of this study was to gain improved understanding of the initiation and progression of thrombosis in one of the most commonly used cfVADs, the Thoratec HeartMate II...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27904902/a-novel-hirudin-derivative-inhibiting-thrombin-without-bleeding-for-subcutaneous-injection
#5
Bing Zhao, Yanling Zhang, Yinong Huang, Jinchao Yu, Yaran Li, Qi Wang, Yixin Ma, Hou-Yan Song, Min Yu, Wei Mo
Currently, anticoagulants would be used to prevent thrombosis. Thrombin is an effector enzyme for haemostasis and thrombosis. We designed a direct thrombin inhibitor peptide (DTIP) using molecular simulation and homology modelling and demonstrated that the C-terminus of DTIP interacts with exosite I, and N-terminus with the activity site of thrombin, respectively. DTIP interfered with thrombin-mediated coagulation in human, rat and mouse plasma (n=10 per group) and blocked clotting in human whole blood in vitro...
December 1, 2016: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/27903864/oral-thrombin-inhibitor-aggravates-platelet-adhesion-and-aggregation-during-arterial-thrombosis
#6
Tobias Petzold, Manuela Thienel, Ildiko Konrad, Irene Schubert, Ron Regenauer, Boj Hoppe, Michael Lorenz, Annekathrin Eckart, Sue Chandraratne, Carsten Lennerz, Christof Kolb, Daniel Braun, Janina Jamasbi, Richard Brandl, Siegmund Braun, Wolfgang Siess, Christian Schulz, Steffen Massberg
In patients with atrial fibrillation, oral anticoagulation with oral thrombin inhibitors (OTIs), in contrast to vitamin K antagonists (VKAs), associates with a modest increase in acute coronary syndromes (ACSs). Whether this observation is causatively linked to OTI treatment and, if so, whether OTI action is the result of a lower antithrombotic efficacy of OTI compared to VKA or reflects a yet undefined prothrombotic activity of OTI remain unclear. We analyzed platelet function in patients receiving OTI or dose-adapted VKA under static and flow conditions...
November 30, 2016: Science Translational Medicine
https://www.readbyqxmd.com/read/27903531/dream-plays-an-important-role-in-platelet-activation-and-thrombogenesis
#7
Kyungho Kim, Alan Tseng, Andrew Barazia, Joseph E Italiano, Jaehyung Cho
Downstream regulatory element antagonist modulator (DREAM), a transcriptional repressor, is known to modulate pain responses. However, it is unknown whether DREAM is expressed in anucleate platelets and plays a role in thrombogenesis. By using intravital microscopy with DREAM-null mice and their bone marrow chimeras, we demonstrated that both hematopoietic and non-hematopoietic cell DREAM are required for platelet thrombus formation following laser-induced arteriolar injury. In a FeCl3-induced thrombosis model, we found that compared to WT control and non-hematopoietic DREAM knockout (KO) mice, DREAM KO control and hematopoietic DREAM KO mice showed a significant delay in time to occlusion...
November 30, 2016: Blood
https://www.readbyqxmd.com/read/27903507/hydroxychloroquine-inhibits-proinflammatory-signalling-pathways-by-targeting-endosomal-nadph-oxidase
#8
Nadine Müller-Calleja, Davit Manukyan, Antje Canisius, Dennis Strand, Karl J Lackner
OBJECTIVES: Hydroxychloroquine (HCQ) has been used for decades to treat patients with rheumatic diseases, for example, systemic lupus erythematosus (SLE), rheumatoid arthritis or the antiphospholipid syndrome (APS). We hypothesise that HCQ might target endosomal NADPH oxidase (NOX), which is involved in the signal transduction of cytokines as well as antiphospholipid antibodies (aPL). METHODS: For in vitro experiments, monocytic cells were stimulated with tumour necrosis factor α (TNFα), interleukin-1β (IL-1β) or a human monoclonal aPL and the activity of NOX was determined by flow cytometry...
November 30, 2016: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/27901002/shorter-versus-longer-duration-dual-antiplatelet-therapy-in-patients-with-diabetes-mellitus-undergoing-drug-eluting-stents-implantation-a-meta-analysis-of-randomized-controlled-trials
#9
He Huang, Ya Li, Yu Chen, Guo-Sheng Fu
BACKGROUND: Patients with diabetes mellitus (DM) have a higher risk of thromboembolic events; however, the optimal duration of dual antiplatelet therapy (DAPT) remains unclear. The goal of this study was to assess the efficacy and safety of various DAPT durations in patients with DM undergoing drug-eluting stent implantation. METHODS: We conducted a literature search for randomized controlled trials (RCTs). We searched databases including EMBASE, PubMed, Cochrane Library, and Scopus up to June 2016...
2016: Chinese Medical Journal
https://www.readbyqxmd.com/read/27899521/venous-thrombotic-events-after-liver-transplantation
#10
Annabel Blasi, Virginia Hernandez, Javier Fernandez, Jordi Colmenero, Joan Beltran, Juan Carlos Garcia-Valdecasas, Joan Carles Reverter
Thromboprophylaxis is not well defined after liver transplantation (LT). The aim of this study was to evaluate the incidence of splanchnic vein thrombosis (SVT) and nonsplanchnic vein thrombosis (NSVT) after LT. Liver transplantations performed between 2009 and 2013 in our institution were reviewed. Demographic, intraoperative, and postoperative data were recorded. Low-molecular-weight heparin was only administered postoperatively if intraoperative thrombectomy was performed or in patients preoperatively anticoagulated...
November 28, 2016: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/27899178/choice-of-a-hemodynamic-model-for-occlusive-thrombosis-in-arteries
#11
David N Ku, Lauren D C Casa, Susan M Hastings
Intravascular thrombosis can lead to heart attacks and strokes that together are the leading causes of death in the US (Kochanek, K.D., Murphy, S.L., Xu, J.Q., 2014). The ability to identify the offending biofluid mechanical conditions and predict the timescale of thrombotic occlusion in vessels and devices may improve patient outcomes. A computational model was developed to describe the growth of thrombus based on the local hemodynamic shear rate. The model predicts thrombus deposition based on initial geometric and fluid mechanical conditions, which are updated throughout the simulation to reflect the changing lumen dimensions...
November 12, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27897205/coulomb-nanoradiator-mediated-site-specific-thrombolytic-proton-treatment-with-a-traversing-pristine-bragg-peak
#12
Jae-Kun Jeon, Sung-Mi Han, Soon-Ki Min, Seung-Jun Seo, Kyuwook Ihm, Won-Seok Chang, Jong-Ki Kim
Traversing proton beam-irradiated, mid/high-Z nanoparticles produce site-specific enhancement of X-ray photon-electron emission via the Coulomb nanoradiator (CNR) effect, resulting in a nano- to micro-scale therapeutic effect at the nanoparticle-uptake target site. Here, we demonstrate the uptake of iron oxide nanoparticles (IONs) and nanoradiator-mediated, site-specific thrombolysis without damaging the vascular endothelium in an arterial thrombosis mouse model. The enhancement of low-energy electron (LEE) emission and reactive oxygen species (ROS) production from traversing proton beam-irradiated IONs was examined...
November 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27897087/nuclear-imaging-of-thrombosis-in-small-animal
#13
Marie-Cécile Valéra, Bernard Payrastre, Olivier Lairez
Thromboembolic disorders are a major cause of morbidity and mortality worldwide. The progress in noninvasive imaging techniques has led to the development of radionuclide imaging based on SPECT and PET approaches to observe molecular and cellular processes that may underlie the onset and progression of disease. The advantages of using normal and genetically modified small animal research have spurred the development of dedicated small animal imaging systems. Animal models of venous and arterial thrombosis are largely used and have improved our understanding of the etiology and pathogenesis of thrombosis...
November 29, 2016: Platelets
https://www.readbyqxmd.com/read/27895638/intercellular-interactions-as-regulators-of-netosis
#14
REVIEW
Nayef M Kazzaz, Gautam Sule, Jason S Knight
Neutrophil extracellular traps (NETs) are chromatin-derived webs extruded from neutrophils in response to either infection or sterile stimulation with chemicals, cytokines, or microbial products. The vast majority of studies have characterized NET release (also called NETosis) in pure neutrophil cultures in vitro. The situation is surely more complex in vivo as neutrophils constantly sample not only pathogens and soluble mediators but also signals from cellular partners, including platelets and endothelial cells...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27895068/impact-of-a-dedicated-cancer-associated-thrombosis-service-on-clinical-outcomes-a-mixed-methods-evaluation-of-a-clinical-improvement-exercise
#15
Simon Noble, Nikki Pease, Jessica Sui, James Davies, Sarah Lewis, Usman Malik, Raza Alikhan, Hayley Prout, Annmarie Nelson
OBJECTIVES: Cancer-associated thrombosis (CAT) complex condition, which may present to any healthcare professional and at any point during the cancer journey. As such, patients may be managed by a number of specialties, resulting in inconsistent practice and suboptimal care. We describe the development of a dedicated CAT service and its evaluation. SETTING: Specialist cancer centre, district general hospital and primary care. PARTICIPANTS: Patients with CAT and their referring clinicians...
November 28, 2016: BMJ Open
https://www.readbyqxmd.com/read/27893059/the-localized-hemodynamics-of-drug-eluting-stents-are-not-improved-by-the-presence-of-magnetic-struts
#16
P R S Vijayaratnam, T J Barber, J A Reizes
The feasibility of implementing magnetic struts into drug-eluting stents (DESs) to mitigate the adverse hemodynamics which precipitate stent thrombosis is examined. These adverse hemodynamics include platelet-activating high wall shear stresses (WSS) and endothelial dysfunction-inducing low wall shear stresses. By magnetizing the stent struts, two forces are induced on the surrounding blood: (1) magnetization forces which reorient red blood cells to align with the magnetic field and (2) Lorentz forces which oppose the motion of the conducting fluid...
January 1, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/27887590/comparing-the-adverse-clinical-outcomes-in-patients-with-non-insulin-treated-type-2-diabetes-mellitus-and-patients-without-type-2-diabetes-mellitus-following-percutaneous-coronary-intervention-a-systematic-review-and-meta-analysis
#17
Nuo Li, Ye-Gui Yang, Meng-Hua Chen
BACKGROUND: Several studies showed Type 2 Diabetes Mellitus (T2DM) to be associated with worse adverse clinical outcomes compared to non-T2DM (NDM) following Percutaneous Coronary Intervention (PCI). In addition, patients with insulin-treated T2DM (ITDM) showed worse clinical outcomes compared to patients with non-insulin treated T2DM (NITDM). Since NITDM and NDM have seldom been systematically analyzed, this study aimed to compare the short and long term adverse clinical outcomes observed in patients with NITDM and patients without T2DM following PCI...
November 25, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27886001/strategy-for-the-hemocompatibility-testing-of-microparticles
#18
S Braune, S Basu, K Kratz, J Bäckemo Johansson, M Reinthaler, A Lendlein, F Jung
Polymer-based microparticles are applied as non-thrombogenic or thrombogenic materials in a wide variety of intra- or extra-corporeal medical devices. As demanded by the regulatory agencies, the hemocompatibility of these blood contacting biomaterials has to be evaluated in vitro to ensure that the particle systems appropriately fulfill the envisioned function without causing undesired events such as thrombosis or inflammation. Currently described in vitro assays for hemocompatibility testing of particles comprise tests with different single cell types (e...
November 23, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27884512/design-synthesis-and-antithrombotic-evaluation-of-novel-non-peptide-thrombin-inhibitors
#19
Dongxing Chen, Jinyu Shi, Jing Liu, Xueying Zhang, Xiaoying Deng, Yanyan Yang, Shuang Cui, Qihua Zhu, Guoqing Gong, Yungen Xu
Ten derivatives of 4-((1,2,3,4-tetrahydrobenzo[4,5]imidazo[1,2-a]pyrazin-1-yl)methyl)benzimida-mide (I-1∼I-2, II-1∼II-8) were designed, synthesized and evaluated for their inhibitory effect on human thrombin. Compound II-7 (IC50=82.8nM), which showed the strongest thrombin inhibitory activity among the tested compounds, was chosen as the lead compound, and ten carbamate derivatives (II-9a∼II-13a, II-9b∼II-12b, II-14) were prepared and evaluated for their anticoagulant activity. The results indicate that most of the tested compounds exhibit a certain degree of inhibitory effect on thrombin-induced platelet aggregation, among which compounds II-11a (IC50=8...
November 9, 2016: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/27882227/g2691a-and-c2491t-mutations-of-factor-v-gene-and-pre-disposition-to-myocardial-infarction-in-morocco
#20
Wiam Hmimech, Brehima Diakite, Hind Hassani Idrissi, Khalil Hamzi, Farah Korchi, Dalila Baghdadi, Rachida Habbal, Sellama Nadifi
Coagulation factor Leiden mutation has been described as a common genetic risk factor for venous thrombosis; however, this mutation was reported to be practically absent in an African population. Recently, a novel non-sense mutation in the gene encoding factor V has been associated with the risk of occurrence of cardio-cerebrovascular diseases such as stroke and venous thrombosis. The aim of the present study was to investigate whether the factor V Leiden (FVL) and C2491T non-sense mutations are associated with the risk of developing myocardial infarction...
November 2016: Biomedical Reports
keyword
keyword
114136
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"