Abstract：
INTRODUCTION:Although the procoagulant reactivity of monocytes largely depends on expression and cell surface presentation of tissue factor (TF), little is known about the impact of tissue factor pathway inhibitor (TFPI) on regulation of TF function on the monocyte surface. MATERIALS AND METHODS:Peripheral blood mononuclear cells (PBMCs) were isolated from blood of healthy subjects and cryopreserved. We investigated TF and TFPI mRNA expression by reverse transcription-quantitative real-time PCR (RT-qPCR), surface presentation by flow cytometry and confocal microscopy, and TFPI-mediated regulation of TF functional activity on the surface of resting and LPS-stimulated PBMCs by TF activity assay and Calibrated Automated Thrombogram (CAT) assay. RESULTS:Unstimulated PBMCs contained nearly no TF, but detectable TFPI protein levels. TFPI mRNA levels were 2-fold higher than TF, and the TFPIα mRNA isoform expression was higher than TFPIβ. LPS stimulation caused a parallel and sustained upregulation of both TFPI isoforms, concomitant with increased surface presentation of TFPI antigen. Stronger, but transient upregulation of TF mRNA and surface antigen was observed at 6hrs of LPS stimulation. After LPS stimulation TF and TFPI were co-localized in the same areas of the monocyte membrane. Pre-incubation of PBMCs with anti-TFPI IgG significantly enhanced TF activity, shortened Lag-time, and increased thrombin generation. TFPI-dependent inhibition of TF was more prominent in resting than in LPS-stimulated cells. CONCLUSIONS:Our results support the concept that surface TFPI is an important regulator of procoagulant reactivity of human monocytes.
journal_name
Thromb Resjournal_title
Thrombosis researchauthors
Basavaraj MG,Gruber FX,Sovershaev M,Appelbom HI,Osterud B,Petersen LC,Hansen JBdoi
10.1016/j.thromres.2010.07.014subject
Has Abstractpub_date
2010-11-01 00:00:00pages
418-25issue
5eissn
0049-3848issn
1879-2472pii
S0049-3848(10)00406-8journal_volume
126pub_type
杂志文章abstract：:Homocystinuria due to cystathionine-beta-synthase deficiency (CBS-def-HOCY) initially often presents with vascular disorders, e.g. thromboembolic events. The measurement of vascular endothelial markers in plasma could help to assess endothelial damage. We determined von Willebrand factor (measured as Ristocetincofacto...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(95)90867-f
更新日期：1995-01-01 00:00:00
abstract：INTRODUCTION:A close association exists between oral health and cardiovascular disease. Periodontal disease induces early vascular changes while oral pathogens have been detected in sub gingival and atheromatous plaques. We examined the interrelationship between Periodontal disease, oral bacteria, surrogate sub-clinica...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2013.04.023
更新日期：2013-07-01 00:00:00
abstract：:Since the first description by Dahlbäck et al (1) of a hereditary defect in the plasma of three unrelated thrombophilic patients characterized by a poor anticoagulant response to activated protein C (APC), many reports have shown a high prevalence of the APC resistance in both the general and thrombophilic populations...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/s0049-3848(97)00022-4
更新日期：1997-02-15 00:00:00
abstract：:[3H]-Platelet activating factor (Paf-acether, 1-O-octadecyl-2-acetyl-sn-glycero-3-phosphocholine) binds to washed human platelets in a specific, dose-dependent, and saturable manner. Scatchard analysis reveals a high affinity site with a KD value of 0.25 +/- 0.033 nM (245 +/- 30 sites per platelet), and a second low a...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(86)90233-1
更新日期：1986-01-15 00:00:00
abstract：OBJECTIVES:This study examines whether patient resistance to clopidogrel is associated with long-term thrombotic events after elective coronary drug-eluting stent (DES) implantation. METHODS:We prospectively enrolled 386 patients with stable angina who received elective percutaneous coronary intervention (PCI) with DE...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2008.10.007
更新日期：2009-05-01 00:00:00
abstract：INTRODUCTION:Prediction of venous thromboembolism (VTE) occurrence in cancer patients using individual risk factors may contribute to preventing the burden of disease associated with VTE. Congestive heart failure in patients with cancer may increase the risk of VTE and worsen the prognosis. AIM:We sought to investigat...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/S0049-3848(16)30134-7
更新日期：2016-04-01 00:00:00
abstract：:Blood platelets have recently been shown to express PYK2, a nonreceptor tyrosine kinase belonging to the FAK gene family. In this study, we examined the involvement of protein kinase C (PKC) in PYK2-related responses in human platelets. While PYK2 tyrosine phosphorylation induced by thrombin was inhibited by preincuba...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/s0049-3848(98)00188-1
更新日期：1999-03-15 00:00:00
abstract：:The two objectives of the study were to determine whether a procedure could be developed for measuring cancer procoagulant (CP) activity in human serum and if this procedure provided a method for distinguishing people with cancer from those without cancer. A procedure was developed for processing human serum such that...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(89)90256-9
更新日期：1989-11-01 00:00:00
abstract：BACKGROUND:In the rat liver, growth hormone (GH) affects the synthesis of vitamin-K-dependent factors, including Protein C (prot.C) and protein S (prot.S), two natural anticoagulants that prevent hypercoagulable states. Adults with GH deficiency (GHD) are at risk of thrombotic events. High circulating levels of PAI-1 a...
journal_title：Thrombosis research
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1016/j.thromres.2010.08.028
更新日期：2010-12-01 00:00:00
abstract：BACKGROUND:Immune thrombocytopenia (ITP) is an immune-mediated bleeding disorder in children. Activated T cells have been shown to play important roles in ITP. The aims of this study were to evaluate whether these T cell activation markers could be used as indicators to differentiate ITP patients from controls, and to ...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2019.05.010
更新日期：2019-08-01 00:00:00
abstract：INTRODUCTION:The use of oral anticoagulant therapy is increasing in children. Managing anticoagulant therapy in children presents unique challenges, including poor venous access. The advent of point-of-care (POC) monitoring of anticoagulant therapy offers a potential solution to this challenge. This paper reviews the p...
journal_title：Thrombosis research
pub_type： 杂志文章,meta分析
doi：10.1016/j.thromres.2005.03.008
更新日期：2006-01-01 00:00:00
abstract：:D-dimer of human fibrin was used as antigen to obtain monoclonal antibodies (mAbs). We have obtained 16 hybridomas producing mAbs of different specificity. Only two of these mAbs inhibited fibrin polymerization. They are of the IgG-class. One mAb (II-4d) inhibited fibrin polymerization to 100% and another (II-3b) to 6...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2004.03.005
更新日期：2004-01-01 00:00:00
abstract：INTRODUCTION:Systemic embolism is the most serious complication of cardioversion of atrial fibrillation (AF) and the immediate post-cardioversion period is associated with increased risk for thrombus formation. For this reason, treatment with vitamin K antagonist (VKA) is recommended for patients with AF. No informatio...
journal_title：Thrombosis research
pub_type： 杂志文章,多中心研究
doi：10.1016/j.thromres.2011.08.031
更新日期：2012-05-01 00:00:00
abstract：:Excess platelets shorten most clotting tests for lupus anticoagulant (LA). Often it is not clear if a shortened, normal or slightly prolonged result in a test masks a weak LA in combination with activated platelets, which express procoagulant phospholipid (PPL). Our aim was to investigate a new LA-insensitive factor X...
journal_title：Thrombosis research
pub_type： 杂志文章,评审
doi：10.1016/j.thromres.2004.06.001
更新日期：2004-01-01 00:00:00
abstract：:An in vitro model of platelet adhesion, the annular perfusion chamber, was utilized to test the effects of Interleukin 1 on vascular thrombogenicity for platelets. De-endothelialized, everted human umbilical arteries were placed in cell culture media with or without Interleukin 1. The arteries were later perfused with...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(89)90235-1
更新日期：1989-11-15 00:00:00
abstract：:Initiation of clotting cascade by tissue factor (TF): Factor VII (FVII) complex is essential for hemostasis however pathologic expression of TF leads to thrombosis. In contrast, the contact pathway factor XII, and to the smaller extent FXI are dispensable for normal hemostasis but still contribute to pathologic thromb...
journal_title：Thrombosis research
pub_type：
doi：10.1016/j.thromres.2014.03.001
更新日期：2014-05-01 00:00:00
abstract：:Tissue factor is an ubiquitous membrane-anchored glycoprotein that initiates blood coagulation by forming a complex with circulating factors VII and VIIa. Under normal circumstances, endothelial cells do not express tissue factor but, in some pathological situations, when the endothelium or the monocytes are exposed t...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(94)90086-8
更新日期：1994-01-15 00:00:00
abstract：:The daily production of billions of platelets must be regulated to avoid spontaneous bleeding or arterial occlusion and organ damage. Complex mechanisms control platelet production and clearance in physiological and pathological conditions. This review will focus on the mechanisms of platelet senescence with specific ...
journal_title：Thrombosis research
pub_type： 杂志文章,评审
doi：10.1016/S0049-3848(16)30370-X
更新日期：2016-05-01 00:00:00
abstract：BACKGROUND:The diagnostic work-up for heparin induced thrombocytopenia (HIT) can take several days. Consequently patients may be speculatively switched onto replacement anticoagulant therapy before a diagnosis is confirmed. On-demand immunoassay diagnostic testing enables timely treatment decisions, based on test resul...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2016.01.025
更新日期：2016-04-01 00:00:00
abstract：:Human apolipoprotein B was purified by barium sulphate adsorption, subsequent delipidation and gel filtration. The protein was then reconstituted in soya bean lecithin and its inhibitory effect towards thromboplastin was assayed by incubation with rabbit brain thromboplastin. The use of an antibody against human apoli...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(92)90033-7
更新日期：1992-10-15 00:00:00
abstract：:Binding of 3H-labeled 1-O-alkyl-2-acetyl-sn-glycero-3-phosphocholine (platelet-activating factor; PAF) to the intact, washed canine platelet has been defined and characterized as being specific and receptor-mediated. Under the conditions described, specific binding to 2 X 10(7) canine platelets reached saturation with...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(88)90339-8
更新日期：1988-06-15 00:00:00
abstract：:Capsaicin was found to be a potent inhibitor of platelet aggregation and release reaction. It inhibited the aggregation of rat platelet induced by collagen and thrombin, but only slightly reduced those of AA and A23187. The IC50 on collagen-induced platelet aggregation was about 85 micrograms/ml. Less inhibition was o...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(84)90189-0
更新日期：1984-12-15 00:00:00
abstract：:The thrombin inhibitory role of antithrombin III (ATIII) and heparin cofactor II (HCII) was studied in vitro using intact and injured rabbit aortae. When intact vessels were loaded with thrombin and then exposed to either heat defibrinogenated human plasma (HDHP) or ATIII the same degree of thrombin inhibition was ach...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(91)90014-n
更新日期：1991-06-01 00:00:00
abstract：:Generation of active Factor XII (FXIIa) triggers blood clotting on artificial surfaces and may also enhance intravascular thrombosis. We developed a patterned kaolin (0 to 0.3 pg/μm(2))/type 1 collagen fibril surface for controlled microfluidic clotting assays. Perfusion of whole blood (treated only with a low level o...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2014.09.030
更新日期：2014-12-01 00:00:00
abstract：INTRODUCTION:Antithrombin (AT), protein C (PC) and protein S (PS) deficiencies are risk factors for venous thromboembolism. Overlapping values between heterozygous carriers and normal individuals often make a correct classification of a deficiency difficult. The aim of this study was to investigate the effect of sex, a...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2013.07.003
更新日期：2013-08-01 00:00:00
abstract：:The effects of sodium salicylate (SS) on ADP-induced platelet aggregation and on a metabolism of calcium in platelets were studied, using gel-filtrated platelets (GFP). SS inhibited dose-responsively ADP-induced aggregation in the presence of fibrinogen and Ca2+. It was found that extracellular 45Ca2+ was rapidly take...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(85)90232-4
更新日期：1985-08-01 00:00:00
abstract：:Resistance to Activated Protein C (APC) was evaluated using 3 different methods: two of them were based on the prolongation of the Activated Partial Thromboplastin Time (APTT) using 2 different APTT reagents in the presence of APC, whereas the third method was based on the prolongation of prothrombin time when APC is ...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(94)90206-2
更新日期：1994-10-01 00:00:00
abstract：:Seven males with atherosclerotic disease received daily 1.6 g of the thromboxane antagonist BM 13.177 in two separate oral dosages over a period of four days. The drug significantly reduced elevated plasma levels of thromboxane B2, beta-thromboglobulin and platelet factor 4, whereas thromboxane B2 generation was only ...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(84)90229-9
更新日期：1984-08-15 00:00:00
abstract：BACKGROUND:Cerebral vein thrombosis (CVT) is a rare, life-threatening disease affecting one adult per 100,000 per year. Genetic risk factors are deficiencies of the natural anticoagulant proteins antithrombin, protein C, protein S or single nucleotide polymorphisms such as factor V Leiden and prothrombin 20210A. In 20%...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2018.06.011
更新日期：2018-09-01 00:00:00
abstract：:The effect of several vitamin K (Vit K) analogues on the aggregation of human platelets was examined. The analogues were potent inhibitors of aggregation induced by ADP, thrombin, collagen and arachidonate but were less active against aggregation induced by the calcium ionophore A23187. Vit K3 also prevented platelet ...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(85)90037-4
更新日期：1985-01-01 00:00:00
