Abstract：
:Accurate and precise measurement of plasma D-dimer levels is important in the diagnosis and management of venous thromboembolism. Considerable variability in D-dimer results obtained using different methods has, however, been reported in multicentre studies. This study explored in two separate multicentre exercises the degree of precision amongst laboratory D-dimer measurements, and the degree by which inter-method agreement could be improved using a calibration curve model. The first exercise demonstrated generally good within-centre precision, with 82% of the centres reporting results for two identical but differently coded samples within 10% of each other. However, six centres reported results which would have excluded deep vein thrombosis (DVT) for one sample but failed to exclude DVT for the other, identical sample. In the second exercise, overall between-method precision of D-dimer results for two samples was shown to improve markedly when a calibration model was applied, using the consensus median values obtained by all participants for three "calibration plasmas" to recalculate D-dimer values. For centres reporting results in fibrinogen equivalent units (FEUs), between-centre coefficients of variation (CVs) fell from 25.9% to 11.6% and 22.4% to 7.7%, respectively, for the two samples. For centres reporting in ng/ml, CVs fell from 45.3-21.6% and 40.8-11.6%, respectively. In conclusion, improved harmonisation of D-dimer results by different methods may be achieved by a calibration model and common calibrant plasmas.
journal_name
Thromb Haemostjournal_title
Thrombosis and haemostasisauthors
Jennings I,Woods TA,Kitchen DP,Kitchen S,Walker IDdoi
10.1160/th07-05-0377subject
Has Abstractpub_date
2007-11-01 00:00:00pages
1127-35issue
5eissn
0340-6245issn
2567-689Xpii
07111127journal_volume
98pub_type
杂志文章,多中心研究abstract：:Genetic determinants of venous thromboembolism (VTE) in the African-American population are poorly characterised. It was recently shown that fibrinogen gamma gene (FGG) polymorphisms 10034C>T and 9340T>C influence VTE risk in the Caucasian population. In the African-American population these polymorphisms are common, ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2009-06-01 00:00:00
abstract：:An important physiological anti-thrombotic function has been suggested for plasma fibronectin and the reticuloendothelial system. The current study evaluated the effects of specific immunological fibronectin depletion and fibronectin supplementation upon resistance to infusion of thrombin and ADP in terms of mortality...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1983-06-28 00:00:00
abstract：:Osteoprotegerin (OPG) regulates bone metabolism by reducing the activation of osteoclasts, but may also be involved in blood vessel calcification and atherosclerosis. Within endothelial cells OPG is stored in Weibel-Palade bodies (WPBs). Blood kinetics of OPG are essentially unknown. We aimed to assess these using two...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/s-0040-1712448
更新日期：2020-07-01 00:00:00
abstract：:It was the aim of the present study to perform a systematic review of the published studies that estimated the prevalence of non-responders to aspirin, as assessed by the closure time of PFA-100, a point-of-care device, and to analyse: 1) some major clinical and methodological factors that can influence it and 2) its ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,评审
doi：10.1160/TH07-08-0530
更新日期：2008-01-01 00:00:00
abstract：:To assess whether plasminogen activator inhibitor 1 (PAI-1) activity is elevated in the progeny of young coronary men, 193 young subjects were recruited and divided into two groups. Group A consisted of 104 children whose fathers had suffered a myocardial infarction before the age of 55 ("cases"). Eighty-nine young su...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1996-09-01 00:00:00
abstract：:Limited data exist on thrombophilia and the risk of venous thrombosis (VT) during pregnancy and postpartum. The objectives of the present study were to investigate the role of haemostatic risk factors for pregnancy-related VT and their phenotypic expression in deep-vein thrombosis (DVT) and pulmonary embolism (PE). To...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH12-05-0350
更新日期：2012-12-01 00:00:00
abstract：:An experimental model incorporating cultured endothelial cells (EC) was used to study the "factor VIII bypassing" activity of prothrombin complex concentrates (PCC), a property exploited in the treatment of hemophiliacs with alloantibodies to factor VIII. Two PCC preparations were ineffective as stimuli of tissue fact...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1991-11-01 00:00:00
abstract：:A new model of thrombotic challenge, well suited for screening agents and which acts primarily against platelet thromboembolism, has been used to test the in vivo anti-platelet effects of four calcium channel blockers (CCB). An i.v. injection of a mixture of collagen plus epinephrine (15 micrograms and 1.8 micrograms/...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1987-06-03 00:00:00
abstract：:Samples taken at various stages of preparation of intermediate purity factor VIII concentrate were assayed for factor VIII coagulant activity (VIII:C), factor VIII coagulant antigen (VIIIC:Ag) and factor VIII related antigen (VIIIR:Ag). The antigen results were used to assess mechanical loss during fractionation as th...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1981-10-01 00:00:00
abstract：:Several studies have highlighted a specific role for membrane cholesterol domains in platelet signalling. Upon adhesion to von Willebrand factor (VWF) or collagen, cholesterol-rich domains (CRDs) accumulate in filopodial extensions and selectively harbour counterpart receptors (GPIb and GPVI) and associated signalling...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH07-08-0528
更新日期：2008-06-01 00:00:00
abstract：:alpha-Granule protein storage is important for producing platelets with normal haemostatic function. The low to undetectable levels of several megakaryocyte-synthesized alpha-granule proteins in normal plasma suggest megakaryocytes are important to sequester these proteins in vivo. alpha-Granule protein storage in vit...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH03-02-0125
更新日期：2003-11-01 00:00:00
abstract：:Direct oral anticoagulants may be effective and safe for treatment of venous thromboembolism (VTE) in cancer patients, but they have not been compared with low-molecular-weight heparin (LMWH), the current recommended treatment for these patients. The Hokusai VTE-cancer study is a randomised, open-label, clinical trial...
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/TH15-06-0452
更新日期：2015-11-25 00:00:00
abstract：:We have previously shown that both mental stress and administration of the muscarinic receptor agonist methacholine induce an acute release of tissue-type plasminogen activator (t-PA) across the human forearm. There are data indicating that the regulated acute release of t-PA from the endothelium is closely interrelat...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1997-08-01 00:00:00
abstract：:Recent data has shown that hormone therapy (HT) increases the risk of cardiovascular and thromboembolic disease, particularly in users of oral HT. Phytoestrogens are popular alternatives to oestrogen therapy; however, their effects on cardiovascular risk are unknown. We investigated the effect of the phytoestrogen, ge...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH10-03-0201
更新日期：2010-12-01 00:00:00
abstract：:The haematopoietic hormone erythropoietin (EPO) has neuroprotective properties and is currently being explored for treatment of stroke and other neurological disorders. Short-term, high-dose treatment with EPO seems to improve neurological function of stroke patients but may be associated with increased thrombotic ris...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH07-03-0208
更新日期：2008-04-01 00:00:00
abstract：:Twenty-nine of 54 uremic patients had low levels of protein C measured as anticoagulant activity, contrasting with normal levels measured as amidolytic activity or antigenic concentration. We demonstrate that this discrepancy is due to the presence of a soluble plasma inhibitor that interferes specifically with the an...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1991-10-01 00:00:00
abstract：:Findings from a recent study suggest that earlier start of treatment with factor VIII in patients with severe hemophilia is associated with a higher risk to develop inhibitors. We set out to assess the association between age of first administration of clotting factor VIII and the risk to develop inhibitors in infants...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2003-03-01 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：:The glycosaminoglycan, heparan sulfate (HS) is composed of alternating units of hexuronic acid and glucosamine, that are variously sulfate-substituted at different positions. Proteoglycans carrying HS chains are ubiquitously expressed at cell surfaces and in the extracellular matrix. The structures of these chains are...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,评审
doi：
更新日期：2007-07-01 00:00:00
abstract：:We have devised an improved high pressure liquid chromatographic technique whereby serotonin, nucleosides, cyclic nucleotides, namely cAMP and cGMP, and 5'mono-, 5'di-, and 5'tri-nucleotides can be analyzed. The cyclic nucleotides have been measured in picomolar quantities. All nucleotides can be quantitated in a sing...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1977-12-15 00:00:00
abstract：:Tissue factor (TF) plays a pivotal role in thrombus formation and atherogenesis in acute coronary syndrome. Tissue factor pathway inhibitor (TFPI) is a specific physiological inhibitor of TF/FVIIa complex that regulates TF-induced coagulation. Adiponectin (Adp) is an adipocyte-specific adipocytokine with anti-atheroge...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2008-08-01 00:00:00
abstract：:Two novel polymorphisms were identified in the factor V gene by direct sequencing of intronic areas. One of them, located in intron 9, is the marker closest to the Leiden mutation ever described, whereas the other, in intron 16, displays a rare allele invariantly associated to the mutation. Allele-specific amplificati...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1997-09-01 00:00:00
abstract：:The release of microvesicles ('platelet microparticles', PMPs) by activated platelets has been shown to be an integral part of the thrombotic process. PMPs are believed to mediate many biological processes as they possess various platelet membrane proteins and bioactive lipids. Of note, there is a growing body of evid...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,评审
doi：10.1160/TH05-03-0201
更新日期：2005-09-01 00:00:00
abstract：:Staphylokinase (SAK) expresses plasminogen activator (PA) activity by forming a complex with plasmin. The interaction between the plasmin-SAK complex and plasminogen was investigated using synthesized peptides, which were constructed according to the amino acid sequence of the SAK molecule. A synthetic nonadecapeptide...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2007-05-01 00:00:00
abstract：:Tissue factor (TF) is the primary initiator of the coagulation cascade and is thought to play a key role in the generation of arterial thrombosis. Recent studies have suggested that TF mediates inflammatory processes in the arterial wall and may be an important regulator of intimal hyperplasia. We have employed geneti...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH04-02-0122
更新日期：2004-09-01 00:00:00
abstract：:The biologically active components from Viperidae venoms specifically affect cell-matrix interactions, and have been utilized for developing anti-adhesive therapy as anti-thrombotic and anti-angiogenic agents. Utilizing platelet aggregometry coupled with flow cytometry, we found that a metalloproteinase isolated from ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH03-07-0426
更新日期：2004-02-01 00:00:00
abstract：:A factor VIII inhibitor has been found in a patient with an unusual combination of factor VIII-related properties. The inhibitor is directed specifically against the clotting activity (VIII:C) of the factor VIII complex. It behaves in a similar fashion to high responding inhibitors of factor VIII seen in haemophilia A...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1986-04-30 00:00:00
abstract：:Integrins are cell surface adhesion receptors that participate in a variety of important processes throughout the vasculature. Here we summarize some recent findings on the regulation of integrin mediated cellular adhesion. Particular emphasis is placed on the regulation of integrin affinity for ligand (activation), a...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,评审
doi：
更新日期：2001-07-01 00:00:00
abstract：:Thrombomodulin (TM) is an endothelial glycoprotein that functions as a thrombin cofactor in the activation of protein C. Recent evidence has revealed that TM has unique effects on cellular proliferation, adhesion, and inflammation. We examined TM expression in the arterial remodeling process with different shear condi...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2007-04-01 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
