Abstract:
:The influence of ionic and non-ionic contrast media (CM) on platelet and leukocyte activation and platelet-leukocyte crosstalk was investigated in hirudinized whole blood. The blood was incubated with and without the ionic CM ioxaglate and the nonionic CM iodixanol at 37 degrees C for 5 min, without or with stirring. Platelet and leukocyte activation and platelet-leukocyte aggregation were measured using whole blood flow cytometry. When blood samples were pre-incubated in the presence of 2%, 5%, and 10% of CM without stirring, both ioxaglate and iodixanol had little effect on unstimulated samples, but dose-independently decreased 1 microM ADP-induced platelet P-selectin expression and fibrinogen binding, and thus platelet-leukocyte aggregate formation. Ioxaglate had little effect on leukocyte CD11b expression, whilst iodixanol slightly enhanced resting and N-formyl-methionyl-leucyl-phenylalanine (fMLP; 0.1 microM)-stimulated leukocyte CD11b expression. Blood samples were also incubated with stirring to investigate the impact of CM (5% of ioxaglate or iodixanol) on platelet-leukocyte cross-talk. Collagen induced marked platelet activation and platelet-leukocyte aggregation, and subsequently elevated leukocyte CD11b expression. The latter was attenuated by ioxaglate and iodixanol, and was accompanied by reduced platelet-leukocyte aggregation. In conclusion, the CM ioxaglate and iodixanol attenuate platelet activation and platelet-leukocyte cross-talk. Inhibitory effects of the contrast agents on this cross-talk are apparently exerted by reducing heterotypic conjugation, and may be beneficial in connection with PCI.
journal_name
Thromb Haemostjournal_title
Thrombosis and haemostasisauthors
Ji Q,Ghaly M,Hjemdahl P,Tornvall P,Li Ndoi
10.1160/TH04-12-0809keywords:
subject
Has Abstractpub_date
2005-05-01 00:00:00pages
922-6issue
5eissn
0340-6245issn
2567-689Xpii
05050922journal_volume
93pub_type
杂志文章abstract::Emicizumab, a bispecific monoclonal antibody, bridges activated factor IX (FIXa) and FX, replacing the function of missing FVIIIa to restore effective hemostasis in persons with hemophilia A (PwHA). Here we assess pharmacokinetic (PK) and pharmacodynamic (PD) biomarkers in PwHA with FVIII inhibitors in the Phase III H...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1055/s-0040-1717114
更新日期:2020-10-21 00:00:00
abstract::We investigated the presence of the gene mutation of factor V, FV R506Q or factor V Leiden, responsible for activated protein C resistance, in DNA samples of 127 probands and 188 relatives from 128 families with antithrombin deficiency. The factor V mutation was identified in 18 families. Nine families were available ...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1996-03-01 00:00:00
abstract::To understand the role of the factor X (fX) activation peptide (AP), a deletion mutagenesis approach was employed. Two single-chain, variant enzymes were generated in which 41 residues were deleted from the AP: fX (des-137-183) and fX(des-137-183;N191A), which lacks a carbohydrate moiety at Asn191 due to an alanine su...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:2002-11-01 00:00:00
abstract::The alphaII(b)beta3 integrin and FcgammaRII receptors mediate, respectively, platelet adhesion and spreading on fibrinogen and immunoglobulin (IgG) coated surfaces. Platelet adhesion to fibrinogen resulted in a partial conversion of the faster to the slower migrating (phosphorylated) form of Ca(+2)-sensitive cytosolic...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1999-04-01 00:00:00
abstract::In patients with von Willebrand disease (VWD) replacement therapy with factor VIII/von Willebrand (VWF) concentrates is increasingly applied as prophylactic regimen. Since 2000, 82 consecutively enrolled patients with clinically relevant bleeding episodes (spontaneous, peri- or postoperative) were diagnosed with VWD [...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1160/TH10-09-0616
更新日期:2011-04-01 00:00:00
abstract::The aim of this study was to investigate the anti-thrombotic effects of an inhibitor of the plasminogen activator inhibitor-1 (PAI-1) in rats given endotoxin. In studies in vitro, PRAP-1, a Fab-fragment of a polyclonal antibody against human PAI-1, was shown to inhibit PAI-1 activity in rat plasma as well as to stimul...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1996-01-01 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::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::Serum amyloid P component (SAP), and its acute phase homologue C-reactive protein (CRP), prolonged activated partial thromboplastin times (APTT) in cell free plasma when assayed at physiological concentrations in the presence of heparin. SAP also inhibited clot formation initiated through the extrinsic and terminal ph...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1986-06-30 00:00:00
abstract::Ultra-low-molecular-weight heparins (ULMWHs) with better efficacy and safety ratios are under development; however, there are few structural data available. The main structural features and molecular weight of ULMWHs were studied and compared to enoxaparin. Their monosaccharide composition and average molecular weight...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1160/TH12-11-0795
更新日期:2013-03-01 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::In 70-80% of cases, pulmonary embolism is the consequence of lower extremity deep vein thrombosis. It has been demonstrated that the most common coagulation defect predisposing to venous thrombosis, resistance to activated protein C (APC), is not associated with an increased risk for pulmonary embolism, but the eviden...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1997-03-01 00:00:00
abstract::The effect of IgGs from 4 patients with antiphospholipid antibodies and elevated excretion of urinary 11-dehydro-thromboxane B2 was evaluated on the production of prostacyclin by human endothelial cells in culture. After 6 h incubation, there was no change in 6-keto-prostaglandin F1 alpha in the supernatant. However p...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1995-08-01 00:00:00
abstract:BACKGROUND: Accurate diagnosis of symptomatic low von Willebrand factor (VWF) remains a major challenge in von Willebrand disease (VWD). However, present tests do not adequately take into account flow forces that, at very high shear rates, reveal a weakness in the VWF-platelet glycoprotein glycoprotein Ib bond in norma...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1055/s-0040-1709525
更新日期:2020-05-01 00:00:00
abstract::Hormone replacement therapy has been associated with venous thromboembolism. Controversy exists regarding the appropriate management of hormone replacement in the perioperative setting and in other situations--such as acute illness--predisposing to acute venous thromboembolism. We performed a case-control study to det...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1160/TH04-03-0165
更新日期:2004-08-01 00:00:00
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journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1996-09-01 00:00:00
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journal_title:Thrombosis and haemostasis
pub_type: 杂志文章,多中心研究
doi:10.1160/TH12-05-0313
更新日期:2012-10-01 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::Increased procoagulant activity in the alveolar compartment and uncontrolled inflammation are hallmarks of the acute respiratory distress syndrome (ARDS). Here, we investigated whether the contact phase system of coagulation is activated and may regulate inflammatory responses in human lungs. Components of the contact...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1160/TH16-12-0904
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abstract::One hundred patients were included in a randomized open trial to assess the systemic factor Xa (FXa) and thrombin inhibitory effect as well as the safety profile of low molecular weight heparin (LMWH) given subcutaneously in conjunction with streptokinase (SK) in patients with acute myocardial infarction (MI). The tre...
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:1997-01-01 00:00:00
abstract::Causative mutations in the factor VIII gene of seven unrelated patients with severe haemophilia A were identified using the mutation screening procedure conformation sensitive gel electrophoresis (1) and characterised by direct sequencing. Female family members of all patients had requested either carrier status deter...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
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journal_title:Thrombosis and haemostasis
pub_type: 杂志文章,评审
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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
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journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1989-02-28 00:00:00
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journal_title:Thrombosis and haemostasis
pub_type: 杂志文章,评审
doi:10.1160/TH15-07-0597
更新日期:2016-03-01 00:00:00
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journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1994-07-01 00:00:00
abstract::Data on the in vivo function of platelets induced by the thrombopoietin receptor agonist eltrombopag are scarce. To assess a possible influence of eltrombopag we compared platelet function of eltrombopag-treated immune thrombocytopenia (ITP) patients (group 1; n=10) after treatment response to that from control ITP pa...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1160/TH12-07-0522
更新日期:2013-04-01 00:00:00
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journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:2007-08-01 00:00:00
abstract::The risk of acute cardiovascular events is highest during morning hours, and platelet activity peaks during morning hours. The effect of timing of aspirin intake on circadian rhythm and morning peak of platelet reactivity is not known. It was our objective to evaluate the effect of timing of aspirin intake on circadia...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章,随机对照试验
doi:10.1160/TH14-05-0453
更新日期:2014-12-01 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