Abstract：
:The effect of negatively-charged polymers, used in some artificial devices, on plasma clotting and kinin systems was studied in vitro using polyelectrolyte complexes. Contact activation was observed as an immediate, transient and surface-dependent phenomenon. After incubation of the plasma with the polymer a small decrease of factor XII activity was noticed, which corresponded to a greater reduction of prekallikrein activity and to a marked kinin release. No significant decrease of factor XII, prekallikrein, HMW kininogen could be detected immunologically. Only the initial contact of the plasma with the polyelectrolyte lead to activation, subsequently the surface became inert. Beside contact activation, factor V activity also decreased in the plasma. The decrease was surface and time-dependent. It was independent of contact factor activation, and appeared to be related to the sulfonated groups of the polymer. If purified factor V was used instead of plasma factor V, inactivation was immediate and not time-dependent suggesting a direct adsorption on the surface. A second incubation of the plasma-contacted polymer with fresh plasma resulted in a further loss of Factor V activity.
journal_name
Thromb Haemostjournal_title
Thrombosis and haemostasisauthors
Boffa MC,Dreyer B,Pusineri Csubject
Has Abstractpub_date
1984-02-28 00:00:00pages
61-4issue
1eissn
0340-6245issn
2567-689Xjournal_volume
51pub_type
杂志文章abstract：:Recombinant factor VIIa (rFVIIa; Novoseven) is used for treatment of hemophilia patients with inhibitors. There are poorly defined differences in clinical responsiveness between individuals. Prior to licensure in the United States, rFVIIa was available through the compassionate use program, during which two patients d...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2002-07-01 00:00:00
abstract：BACKGROUND: Evaluation of thromboembolic risk is essential in anticoagulated atrial fibrillation (AF) patients. The CHA2DS2-VASc score is largely validated and recommended by most guidelines. The GARFIELD-AF Stroke score has been proposed as an alternative risk score. METHODS: We analyzed warfarin-treated patients fro...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/a-1333-4448
更新日期：2020-12-09 00:00:00
abstract：:The increase in nitric oxide (NO) production in lipopolysaccharide (LPS)-induced sepsis is thought to contribute to the development of shock. However, NO could also play an antithrombotic role. Little is known about the modulating effect of NO on the endothelial overexpression and production of tissue factor (TF) and ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2002-12-01 00:00:00
abstract：:A group of 90 hemophiliacs who had been regularly treated with non virus-inactivated factor VIII or IX concentrates were studied in 1983. At that time 50 patients were HIV-1-antibody positive, 6 additional seroconversions occurred until 1985. 26 of the 50 patients seropositive in 1983 are currently asymptomatic. 4 pat...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1989-06-30 00:00:00
abstract：:Restenosis following successful percutaneous coronary revascularization continues to represent a major problem limiting the clinical efficacy of this procedure. The underlying mechanisms of restenosis are comprised of a combination of effects from vessel recoil, negative vascular remodeling, thrombus formation and neo...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,评审
doi：
更新日期：1999-09-01 00:00:00
abstract：:The contribution of the various components of the contact system in the generation of factor XIIa (FXIIa) and of kallikrein (KRN) on an electronegative surface and the release of the generated enzymes to the bulk phase was examined in mixtures of normal human plasma and plasmas congenitally deficient in these componen...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1999-09-01 00:00:00
abstract：:The antithrombotic effect of the thromboxane A2 receptor antagonist, vapiprost, was compared with those of other antiplatelet drugs using an arterial thrombosis model which utilized photochemical reaction in the rat femoral artery. Vapiprost prolonged the time required to occlude the artery with thrombus and inhibited...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1992-10-05 00:00:00
abstract：:Thrombocytopenia and platelet dysfunction induced by extracorporeal blood circulation are thought to contribute to postsurgical bleeding complications in neonates undergoing cardiac surgery with cardiopulmonary bypass (CPB). In this study, we examined how changes in platelet function relate to changes in platelet coun...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/s-0039-1700517
更新日期：2020-01-01 00:00:00
abstract：:Increased fibrinogen concentration is a well known phenomenon following acute ischemic stroke. However, the natural course of this hyperfibrinogenemia is uncertain. We aimed to clarify whether it is of a transient or more persistent nature in patients who harbor an underlying morbid biology of atherothrombo-inflammati...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH07-08-0484
更新日期：2008-01-01 00:00:00
abstract：:Pulmonary embolism (PE) may encompass a wide spectrum of severity. To determine whether clinical findings, D-dimer (DD) concentration, and deep vein thrombosis (DVT) shown by lower-limb venous compression ultrasonography (US) might predict the scintigraphic extent of PE, we studied 104 hemodynamically stable consecuti...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2001-11-01 00:00:00
abstract：:Bypassing inhibitors in haemophilia patients is limited to activated (a) Factor(F)VII products. We introduced "FVa activity augmentation" as another bypassing strategy and studied effects of an engineered FVa variant designated superFVa. Procoagulant and clot stabilising properties of superFVa and recombinant human (r...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH15-07-0525
更新日期：2016-03-01 00:00:00
abstract：:Primary prevention of cardiovascular events with aspirin in patients with elevated cardiovascular risk, including diabetics, is currently under intense discussion. Data from meta-analyses suggests that the efficacy of aspirin in these patients is low, whereas there is a significantly increased bleeding tendency. Howev...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,评审
doi：10.1055/s-0039-1694774
更新日期：2019-10-01 00:00:00
abstract：:Paired blood samples were obtained from mothers (venous) and babies (cord venous blood) at the time of delivery by caesarean section under epidural anaesthetic. Fetal platelets failed to aggregate in response to adrenaline in vitro although adrenaline could potentiate the threshold response to adenosine diphosphate (1...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1985-02-18 00:00:00
abstract：BACKGROUND: There have been no prior nationwide reports on the prevalence of hypertrophic cardiomyopathy (HCM) among patients suffering from atrial fibrillation (AF). It is also unclear how much stroke risk is attributable to HCM compared with other stroke risks in patients with AF. This study assessed the prevalence o...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/s-0038-1676818
更新日期：2019-02-01 00:00:00
abstract：:The endothelial protein C receptor (EPCR) is expressed by trophoblast cells. Mid-gestation pregnancy loss is described in animals with a haemochorial placenta lacking EPCR. The A6936G allele of the EPCR gene (PROCR) may be associated with lower EPCR densities on trophoblasts, but data are lacking for its effect on the...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH-09-04-0224
更新日期：2009-10-01 00:00:00
abstract：:Microparticles (MPs) are formed from platelets (PMPs), endothelial cells (EMPs) and monocytes (MMPs), and in acute myocardial infarction (MI), there is an increase of MPs in the culprit artery. In this study MPs were evaluated in whole blood in 105 patients with MI at five time-points during a two-year follow-up (FU)....
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH16-11-0837
更新日期：2017-07-26 00:00:00
abstract：:Sulodexide, a highly purified glycosaminoglycan, was investigated for treatment of venous leg ulcers. Patients (n = 235) undergoing local treatment including wound care and compression bandaging, were randomised to receive either sulodexide or matching placebo for three months. Primary study endpoint was complete ulce...
journal_title：Thrombosis and haemostasis
pub_type： 临床试验,杂志文章,多中心研究,随机对照试验
doi：
更新日期：2002-06-01 00:00:00
abstract：:FPA level, fibrinogen turnover rate, and fibrinolytic activity were studied on 18 patients with malignant disease. It was found that the FPA levels were significantly elevated and were correlated with fibrinogen turnover rate (r = 0.74, p less than 0.001) and FDP (r - 0.58, p less than 0.02). Estimated FPA turnover ra...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1981-12-23 00:00:00
abstract：:This study aims to establish the relative effectiveness and safety of low molecular weight heparin in elderly patients with venous thrombosis in order to find an alternative to oral anticoagulant therapy with less bleeding complications in the long-term treatment of deep venous thrombosis (DVT). One hundred consecutiv...
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：2000-10-01 00:00:00
abstract：:In eighteen patients with fulminant hepatic failure (FHF), in grade III or IV coma, both protein C antigen and activity were significantly decreased (0.35 +/- 0.03 u/ml and 0.35 +/- 0.03 u/ml respectively). There was a significant correlation between protein C antigen and activity (r = 0.61, p less than 0.01). Protein...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1988-04-08 00:00:00
abstract：:The calcium electrode is a convenient, inexpensive, and non-traumatic method for measuring changes in the extracellular calcium which accompanies a platelet release reaction. With this instrument, the temporal pattern of release by platelets in a buffered-saline medium following thrombin stimulation was observed as fo...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1977-06-30 00:00:00
abstract：:Injection of human alpha 2-antiplasmin resulted in delayed elimination of fibrin from the lungs in rats with thrombin-induced intravascular coagulation. The amount of alpha 2-antiplasmin injected was chosen so as to simulate the posttraumatic increase of this inhibitor in man. By injecting trace amounts only of radiol...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1981-12-23 00:00:00
abstract：:Over the last few years methods have been developed to assess appearance of thrombin during blood clotting in a clinical setting. This can be achieved either by measurement of the specific thrombin markers or by analysis of the thrombin generation kinetics. Thrombin markers rise following coronary occlusion and, surpr...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,评审
doi：
更新日期：1995-07-01 00:00:00
abstract：:In hereditary angioedema (HAE), normal C1-inhibitor (C1-INH) is low and the contact system activated. Recently, the findings of a tissue factor mutant selectively deficient in promoting the conversion of FVII to FVIIa, but with retained cofactor for FVIIa, made it possible to examine reliably the pre-existing content ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1995-10-01 00:00:00
abstract：:An analysis was made of 346 cases of disseminated intravascular coagulation (DIC) diagnosed by utilizing a combination of laboratory tests which reflect the pathophysiology of the syndrome. The goals of the study were three fold: 1) to compare our clinical disease categories with those of other investigators, 2) to re...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1980-02-29 00:00:00
abstract：:Outcomes of acute coronary syndrome (ACS) patients undergoing percutaneous coronary intervention (PCI) have been significantly improved with the use of potent P2Y12 receptor inhibitors like prasugrel. While most of the ischaemic risk reduction for prasugrel versus clopidogrel was demonstrated in the early treatment pe...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1160/TH16-07-0557
更新日期：2017-01-05 00:00:00
abstract：:Patterns of VIIIR:AG in the plasma and its fractions, cryoprecipitate and cryosupernatant, from various types of von Willebrand's disease (vWd) were observed by SDS 1.5% polyacrylamide gel electrophoresis - cross immunoelectrophoresis (SDS PAGE - CIE). VIIIR:AG in normal cryoprecipitate showed several precipitin peaks...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1981-06-30 00:00:00
abstract：:Clot retraction is an essential step during primary haemostasis, thereby promoting thrombus stability and wound healing. Integrin αIIbβ3 plays a critical role in clot retraction, by inducing acto-myosin interactions that allow platelet cytoskeleton reorganisation. However, the signalling pathways that lead to clot ret...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH13-04-0335
更新日期：2013-12-01 00:00:00
abstract：:Activation of coagulation was studied during the peri-operative period in patients undergoing cardiopulmonary bypass (CPB) surgery using activation markers which have recently become available: prothrombin fragment F1 + 2 (F1 + 2), which is a measure of total thrombin generation, and thrombin-antithrombin complex, whi...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1993-08-02 00:00:00
abstract：:Shear stress has an established effect on mature endothelial cells, but less is known about how shear stress regulates endothelial progenitor cells (EPCs). In vitro expanded EPCs isolated from adult human blood represent a novel tool in regenerative vessel therapy. However, in vitro culturing may generate cells with u...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH09-12-0854
更新日期：2010-09-01 00:00:00
