Abstract：
:Heparin-induced thrombocytopenia (HIT), a relatively common complication of heparin therapy, results of platelet activation, via the receptor for the Fc domain of IgG (FcgammaRIIa), by heparin-dependent-antibodies, commonly directed against the heparin-platelet factor 4 (H-PF4) antigenic complex. Our strategy was to use whole blood allowing the study of leukocyte-platelet interactions. Experiments were performed with blood from healthy donors incubated with HIT patients' plasma and different concentrations of heparin. We showed that 75% of the HIT patients' plasma induced the formation of leukocyte-platelet-aggregates in a heparin-dependent-manner. The formation of leukocyte-platelet-aggregates induced by HIT plasma in the presence of heparin was (i) independent of the healthy blood donor FcgammaRIIa polymorphism, (ii) correlated with the levels of anti H-PF4 IgG antibodies contained in the patients' plasma, and to a lesser extent to anti H-PF4 IgM antibodies, and (iii) was mediated by P-selectin. This report opens new prospects in the study of the molecular and cellular events implicated in HIT.
journal_name
Thromb Haemostjournal_title
Thrombosis and haemostasisauthors
Khairy M,Lasne D,Brohard-Bohn B,Aiach M,Rendu F,Bachelot-Loza Ckeywords:
subject
Has Abstractpub_date
2001-06-01 00:00:00pages
1090-6issue
6eissn
0340-6245issn
2567-689Xpii
01061090journal_volume
85pub_type
杂志文章abstract：:The activation of factor XI by meizothrombin was investigated using recombinant meizothrombin (R155A meizothrombin) that is resistant to autocatalytic removal of fragment 1. Meizothrombin was capable of activating factor XI at an activation rate similar to that of thrombin. Dextran sulphate and heparin, known cofactor...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1997-08-01 00:00:00
abstract：:Developmental haemostasis is a concept, now universally accepted, introduced by Andrew et al. in the late 1980's. However, coagulation analysers and reagents have changed significantly over the past 15 years. Coagulation testing is known to be sensitive to changes in individual reagents and analysers. We hypothesised ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH05-01-0047
更新日期：2006-02-01 00:00:00
abstract：:In conclusion, we believe that the baboon offers many advantages as an experimental animal to study vascular disease, thrombus formation and dissolution, the effects of mediating variables, and the relative efficacy of therapeutic interventions. Each specific application for testing therapeutic agents may require test...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,评审
doi：
更新日期：1987-10-28 00:00:00
abstract：:The generation of D-dimer was studied in the course of local thrombolytic therapy of peripheral arterial occlusions with low doses of recombinant human tissue-type plasminogen activator (rt-PA) in 7 patients. Intermittent local application of rt-PA resulted in a marked increase in D-dimer exceeding values usually seen...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1990-10-22 00:00:00
abstract：:Tissue thromboplastin apoprotein was partially purified from human brain. The apoprotein was recombined with mixed phospholipids to yield active thromboplastin. The recombined thromboplastin induced proteolytic activation of isolated human factor IX in the presence of factor VII and Ca2+. The clotting times of various...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1982-08-24 00:00:00
abstract：:Prasugrel, through its active metabolite, reduces atherothrombosis and its clinical manifestations by inhibiting platelet activation and aggregation. Platelets also contribute to inflammation through interaction with different classes of leukocytes. We investigated whether the inhibitory effect of prasugrel on platele...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH11-12-0867
更新日期：2012-06-01 00:00:00
abstract：:Parameters of the fibrinolytic system were studied in a primate model where the generation of thrombin was promoted in vivo. The procoagulant stimulus used was a combination of human factor Xa in combination with phosphatidylcholine/phosphatidylserine lipid vesicles (PCPS) as the source of coagulant active phospholipi...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1990-06-28 00:00:00
abstract：:An abnormal fibrinogen was discovered in the plasma of a clinically asymptomatic woman. This fibrinogen variant was analyzed by high resolution two-dimensional gel electrophoresis and its molecular abnormality established consisting in a slight decrease in molecular mass of the B beta-chains. Analysis of fibrin reveal...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1988-04-08 00:00:00
abstract：:At the moment of hemostasis, the platelet must be able to reorganize its cytoskeleton through a complexly orchestrated signaling cascade that is regulated, in part, by polyphosphoinositides. In the past 6 years, evidence has accumulated that PH domains bind these polyphosphoinositides and play a role in cytoskeletal c...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,评审
doi：
更新日期：1999-08-01 00:00:00
abstract：:We have established a new analytical method which allows the characterization of von Willebrand factor (vWF) degradation fragments in minute amounts (10 microliters) of plasma, without the need for immunopurification of vWF. Plasma vWF was hydrolysed by S aureus V-8 protease (V-8 protease) and the cleaved fragments se...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1988-12-22 00:00:00
abstract：:During the collection of samples for plasma beta-thromboglobulin (beta-TG) determination, it is well established that artificially high values can be observed due to in-vitro release. To estimate the reliability of a single beta-TG measurement, blood samples were collected simultaneously from both arms on two separate...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1987-04-07 00:00:00
abstract：:We compared the Ivy bleeding time method and two alternatives of the Simplate II method (incisions in horizontal and vertical direction) with each other, with regard to the sensitivity, the specificity, the costs and the burden for the patient. In the aspirin study an aspirin-induced bleeding defect was used. Seventy-...
journal_title：Thrombosis and haemostasis
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：1992-05-04 00:00:00
abstract：:Several members of a family from Scranton, Pennsylvania were identified to have normal levels of prothrombin antigen while their prothrombin clotting activity was approximately 50% of normal. There has been no previous history of bleeding or other clinical manifestations in this family. The genomic DNA from the proban...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2001-04-01 00:00:00
abstract：:An assay of human antiplasmins has been developed utilizing radial diffusion of plasma from wells cut in plasmin-enriched, fibrinogen-agarose plates. After diffusion the fibrinogen is clotted. Zones of fibrin protected from background fibrinolysis develop as the result of plasma antiplasmin activity. A pooled plasma s...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1978-04-30 00:00:00
abstract：:Evaluation of factor F(V)III replacement in patients with haemophilia A undergoing surgery is critical for FVIII concentrates, yet large scale, multi-center prospective studies, particularly using continuous infusion, are generally lacking for new products. This study evaluated efficacy and safety of a newly developed...
journal_title：Thrombosis and haemostasis
pub_type： 临床试验,杂志文章,多中心研究
doi：
更新日期：2008-08-01 00:00:00
abstract：:Catabolism of coagulation factor VIII (FVIII) is mediated by low-density lipoprotein receptor-related protein (LRP). The ligand-binding sites of LRP are formed by complement-type repeats (CR), and CR clusters II and IV bind most of LRP ligands. FVIII contains two major LRP-binding sites located in the A2 and A3 domain...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2007-12-01 00:00:00
abstract：:Thirty-three patients with acute iliofemoral thrombosis were randomly assigned to three treatment groups in a pilot dose-ranging study of thrombolytic therapy in deep vein thrombosis. One group received tissue culture urokinase in a dose of 2,200 I.U./kg/hr, and a second group in a dose of 1,100 I.U./kg/hr following a...
journal_title：Thrombosis and haemostasis
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：1983-10-31 00:00:00
abstract：:We have investigated the effect of a new Leu196Pro mutation, identified in the MIDAS-like domain of the beta3 integrin subunit in a patient with type II Glanzmann thrombasthenia, on beta3 integrin receptor function. Expression of the mutant beta3Pro196 subunit in CHO cells, either associated with recombinant human alp...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2001-12-01 00:00:00
abstract：:This study compares the ability of unmodified and carbohydrate-modified forms of factor VIII/von Willebrand factor (FVIII/vWF) protein to bind to platelets in the presence of ristocetin or thrombin. Treatment of intact FVIII/vWF with alpha-D-neuraminidase results in more than 95% desialylation. Asialo FVIII/vWF retain...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1985-06-24 00:00:00
abstract：:Tissue factor pathway inhibitor (TFPI) is a potent inhibitor of the TF-dependent coagulation system. In meningococcal disease, up-regulation of tissue factor expression on blood monocytes and possibly on endothelial cells has the potential to trigger the activation of the TF-dependent pathway of coagulation. Intravasc...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2001-02-01 00:00:00
abstract：:Plasminogen activator inhibitor 1 (PAI-1) is the main inhibitor of tissue-type and urokinase-type plasminogen activators (t/uPA) and plays an important role in fibrinolysis. Inhibition of PAI-1 activity prevents thrombosis and accelerates fibrinolysis, indicating that PAI-1 inhibitors may be used as effective antithro...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH16-11-0891
更新日期：2017-06-28 00:00:00
abstract：:The availability of mice with tissue-specific expression of recombinase Cre is the limiting step for a successful gene targeting by the Cre-LoxP methodology. This work aimed at generating transgenic mice with restricted expression of recombinase Cre in megakaryocytes and platelets, driven by the promoter of the αIIb g...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH10-06-0378
更新日期：2011-01-01 00:00:00
abstract：:Neuroserpin is a member of the serine proteinase inhibitor (serpin) gene family that reacts preferentially with tissue-type plasminogen activator (tPA) and is primarily localized to neurons in regions of the brain where tPA is also found. Outside of the central nervous system (CNS) tPA is predominantly found in the bl...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,评审
doi：10.1160/TH03-12-0766
更新日期：2004-03-01 00:00:00
abstract：:The effect of additional treatments combined with conventional therapy on pregnancy outcomes was examined in high-risk primary antiphospholipid syndrome (PAPS) patients to identify the most effective treatment strategy. The study's inclusion criteria were (1) positivity to lupus anticoagulant alone or associated with ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,多中心研究
doi：10.1055/s-0038-1632388
更新日期：2018-04-01 00:00:00
abstract：:The clinical severity in some patients with haemophilia A appears to be unrelated to the levels of factor (F)VIII activity (FVIII:C), but mechanisms are poorly understood. We have investigated a patient with a FVIII gene mutation at Arg1781 to His (R1781H) presenting with a mild phenotype despite FVIII:C of 0.9 IU/dl....
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH12-10-0762
更新日期：2013-06-01 00:00:00
abstract：:Positively charged macromolecule, polylysine (mol. wt. 15,000; 23,000; 180,000) could induce the platelet aggregation in low concentration but high concentration was required in the case of neutral macromolecule, dextran (mol. wt. 40,000; 250,000; 2,000,000). The larger molecules of polylysine and dextran were more ef...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1978-08-31 00:00:00
abstract：:A simple collagen binding assay (CBA) for measuring activity of the von Willebrand factor cleaving protease in clinical samples is described, and results of fifty masked plasmapheresis samples rom patients with TTP/HUS and other diseases are presented. There was 97.5% concordance between the CBA and a multimer gel ass...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2002-10-01 00:00:00
abstract：:In vitro and in vivo effects of adrenaline (ADR) on platelet aggregation, on platelet factor 3 (PF3) availability and on platelet factor 4 (PF4) release were studied in man. Inhibitory action of an alpha-blocker, phentolamine (PHEN) was investigated in the same conditions. The threshold concentration (TC) of ADR induc...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1978-10-31 00:00:00
abstract：: ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/s-0038-1657077
更新日期：1979-07-01 00:00:00
abstract：:In vitro, concentration-dependent effects of rt-PA on a range of coagulation and fibrinolytic assays in thawed plasma samples were investigated. In absence of a fibrinolytic inhibitor, 2 micrograms rt-PA/ml blood (3.4 micrograms/ml plasma) caused prolongation of clotting time assays and decreases of plasminogen (to 44...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1987-10-28 00:00:00
