Abstract：
BACKGROUND:Influencing factors for clopidogrel-mediated platelet inhibition have only been evaluated by one or two different test systems in the same population so far. Since previous studies revealed poor correlations between the various platelet function tests, the identification of influencing variables for clopidogrel response may vary from one test system to the next. We therefore investigated whether the influencing factors for clopidogrel-mediated platelet inhibition depend on the used assay. PATIENTS AND METHODS:Adenosine diphosphate (ADP)-inducible platelet reactivity was assessed by light transmission aggregometry (LTA), the VerifyNow P2Y12 assay, the vasodilator-stimulated phosphoprotein (VASP) phosphorylation assay, multiple electrode aggregometry (MEA), and the Impact-R in 288 patients after angioplasty and stenting for cardiovascular disease. By univariate and multivariate regression analyses, we evaluated the impact of age ≥ 75, gender, body mass index (BMI), diabetes, active smoking, hypertension, hyperlipidemia, C-reactive protein, platelet count, creatinine, use of calcium-channel blockers (CCBs), statins, proton pump inhibitors, beta blockers, angiotensin converting enzyme inhibitors, and angiotensin receptor blockers on clopidogrel-mediated platelet inhibition in each test system. RESULTS:None of the independent influencing variables was consistent through all test systems. Only by LTA and the VerifyNow P2Y12 assay, age ≥ 75 and the use of CCBs were independently associated with higher on-treatment platelet reactivity. Only by the VASP assay and MEA, on-treatment platelet reactivity increased linearly with BMI. Further, only by MEA, residual ADP-inducible platelet reactivity increased linearly with platelet count, whereas an increase in platelet count was independently associated with a decrease in ADP-inducible platelet activation by the Impact-R. CONCLUSION:The influencing factors for platelet reactivity during clopidogrel therapy are assay-dependent.
journal_name
Thromb Resjournal_title
Thrombosis researchauthors
Gremmel T,Steiner S,Seidinger D,Koppensteiner R,Panzer S,Kopp CWdoi
10.1016/j.thromres.2011.05.008subject
Has Abstractpub_date
2011-10-01 00:00:00pages
352-7issue
4eissn
0049-3848issn
1879-2472pii
S0049-3848(11)00234-9journal_volume
128pub_type
杂志文章abstract：:Platelet prothrombin converting activity was measured in a system using washed human platelets and purified coagulation factors Xa, Va and prothrombin. Exposure of platelet prothrombin converting activity evoked by collagen or the combined action of collagen and thrombin was effectively inhibited when a collagen deriv...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(85)90065-9
更新日期：1985-02-01 00:00:00
abstract：:Fucoidan [sulfated poly (L-fucopyranose)] was compared with 6-aminohexanoic acid (6-AH) or CNBr-cleaved fibrinogen (CNBr-Fbg) alone or in combination in enhancing the activation of glutamic plasminogen (Glu-Plg) or lysine plasminogen (Lys-Plg) by two-chain tissue plasminogen activator (t-PA) or LMwt-urokinase or by st...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(95)00111-4
更新日期：1995-08-01 00:00:00
abstract：INTRODUCTION:Pathogenesis of idiopathic pulmonary arterial hypertension (iPAH) includes endothelial dysfunction and in situ thrombosis. A hypercoagulable state has also been postulated but never demonstrated. Our objective was to determine whether patients with iPAH had a hypercoagulable state using calibrated automate...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2010.08.020
更新日期：2010-12-01 00:00:00
abstract：:Lp(a) lipoprotein contains a unique apolipoprotein, apolipoprotein (a), that has a striking homology with plasminogen. This homology has brought forward speculations as to an inhibitory effect of Lp(a) lipoproteins on fibrinolysis. The present investigation was undertaken to study the influence of Lp(a) lipoprotein on...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(92)90080-t
更新日期：1992-11-01 00:00:00
abstract：:The loss of sialic acid was determined in human platelets stored during a seven day period in their homologous plasma. Approximately 30% of the sialic acid was lost during the first three days of incubation at room temperature and a total of 73% was lost after seven days. The rapid in vitro loss of sialic acid may mim...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(82)90316-4
更新日期：1982-06-15 00:00:00
abstract：:Calcium accumulating vesicles were prepared from washed human platelets. Ca2+ uptake could be stimulated with calmodulin. The stimulation of Ca2+ uptake was not abolished by the adenylate cyclase inhibitor 2',5'-dideoxyadenosine, thus excluding enhanced cAMP formation as a possible cause for the calmodulin effect. Our...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(86)91697-x
更新日期：1986-02-15 00:00:00
abstract：:The effect of warfarin-induced factor VII deficiency on the skin bleeding time was investigated in 10 consecutive patients with mean prothrombin times of 33 sec and factor VII levels of 7%. Bleeding times in all but one subject were entirely within the normal range. We conclude that warfarin administration, even to th...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(83)90243-8
更新日期：1983-02-15 00:00:00
abstract：BACKGROUND:It has been previously shown that platelets of patients with diabetes are more reactive and less responsive to anti-platelet drugs compared with platelets from subjects without diabetes. Studies examining the effect of glycemic control on platelet reactivity have yielded conflicting data. Thus, in this study...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2014.05.010
更新日期：2014-07-01 00:00:00
abstract：INTRODUCTION:Previous studies have suggested the used of off-label recombinant factor VII (rFVIIa) increases the risk of thromboembolic events, but the effect of the dose of rFVIIa is not well described in the literature. MATERIALS AND METHODS:All adult patients that received off-label rFVIIa from 2005-2012 were inclu...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2014.02.026
更新日期：2014-05-01 00:00:00
abstract：BACKGROUND:Statins have been shown to have a protective effect for venous thromboembolism (VTE) in the general population. This study sought to assess the association between statins and the risk for cancer-associated deep vein thrombosis (DVT) and pulmonary embolism (PE). METHODS:Patients with newly diagnosed cancer ...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2017.08.001
更新日期：2017-10-01 00:00:00
abstract：:Effects of mechanical trauma of platelets and red blood cells on dynamic viscoelasticity of blood during clotting were examined. Two different methods were attempted to give the mechanical damage to blood cells. In one method, a flow apparatus consisting of a thin teflon tube and two sample reservoirs connecting to bo...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(86)90084-8
更新日期：1986-08-15 00:00:00
abstract：:The extracellular nucleotides, ATP and ADP, as well as adenosine have been implicated in a great number of physiological functions. ADP is one of the major platelet recruiting factors, whereas ATP is considered to be a competitive inhibitor of ADP-induced platelet aggregation and adenosine is able to induce vasodilata...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2007.01.006
更新日期：2007-01-01 00:00:00
abstract：:Normal haemostasis requires maintenance of a careful equilibrium between the necessity to clot when bleeding and the retention of fluid phase at all other times. Disruption of this equilibrium can result in catastrophic outcomes, e.g. acute myocardial infarction and pulmonary embolism. However, despite the significant...
journal_title：Thrombosis research
pub_type： 杂志文章,评审
doi：10.1016/j.thromres.2019.04.033
更新日期：2019-07-01 00:00:00
abstract：INTRODUCTION:No data are available regarding appropriate strategies for the transition of patients undergoing total hip or knee replacement (THR/TKR) surgery from subcutaneous low molecular weight heparin (LMWH) to rivaroxaban. This study determined the pharmacodynamic effects of rivaroxaban on the first day of adminis...
journal_title：Thrombosis research
pub_type： 临床试验,杂志文章,多中心研究
doi：10.1016/j.thromres.2012.07.014
更新日期：2012-11-01 00:00:00
abstract：INTRODUCTION:The first aim of this study is to evaluate the biological effect of doubling the maintenance dose of clopidogrel in pre-defined clopidogrel "low responders", compared to the biological effect of the standard dose in "responders". The second aim is to test the influence of the CYP 2C19*2 allele on clopidogr...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2007.06.012
更新日期：2008-01-01 00:00:00
abstract：INTRODUCTION:Hemolytic uremic syndrome is a thrombotic microangiopathy. Clopidogrel, a recently developed platelet aggregation inhibitor, has not been previously reported as a treatment for this illness. Our study's objective was to explore the efficacy and safety of clopidogrel in children with diarrhea associated hem...
journal_title：Thrombosis research
pub_type： 临床试验,杂志文章
doi：10.1016/j.thromres.2012.05.017
更新日期：2012-09-01 00:00:00
abstract：:Major orthopaedic surgery is associated with an increased risk of venous thromboembolism. Direct oral anticoagulants (DOACs) are recommended as thromboprophylactic agents after orthopaedic surgery. Although routine monitoring of DOACs in general is not required, measuring DOAC concentration may be necessary in clinica...
journal_title：Thrombosis research
pub_type： 临床试验,杂志文章
doi：10.1016/j.thromres.2016.01.012
更新日期：2016-03-01 00:00:00
abstract：:Fasting plasma homocysteine level and the related clinical findings were analysed in 240 consecutive patients with venous thromboembolism. Hyperhomocysteinemia, defined as a plasma level above 20 micromol/l (corresponding to the percentile 95th in the controls), was present in 11.2% of the patients. Plasma homocystein...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/s0049-3848(02)00096-8
更新日期：2002-04-15 00:00:00
abstract：BACKGROUND:Plasminogen activator inhibitor type-1 (PAI-1) is considered to be the main inhibitor of fibrinolysis in sepsis. However, the contribution of TAFI to the inhibition of fibrinolysis in sepsis is currently unknown. METHODS:TAFI antigen and PAI-1 levels were measured in severe sepsis (n = 32) and septic shock ...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2005.06.007
更新日期：2006-01-01 00:00:00
abstract：:Approximately one-fifth of all cases of venous thromboembolism (VTE) are related to cancer. VTE complications may have a substantial impact on prognosis, quality of life and care in patients with cancer. Patients with cancer-related VTE are at increased risk of developing recurrent VTE compared to patients without can...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/S0049-3848(20)30409-6
更新日期：2020-07-01 00:00:00
abstract：:Mice were implanted subcutaneously with a pellet containing 0.5 mg estradiol or with a placebo. Eight to 12 days later platelet aggregation was produced in mesenteric arterioles by injuring their endothelium in vivo with a noxious light/dye stimulus. The time between the onset of the noxious stimulus and the appearanc...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(85)90220-8
更新日期：1985-08-01 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:The mortality rate associated with UGI bleeding remains high at 7-14%. Pharmacologic and endoscopic interventions are the current standard treatment, but there are few alternative options should these fail. This study aimed to assess the efficacy and safety of recombinant activated factor VII (rFVIIa) in t...
journal_title：Thrombosis research
pub_type： 临床试验,杂志文章
doi：10.1016/j.thromres.2005.10.008
更新日期：2006-01-01 00:00:00
abstract：:Coagulation is initiated by tissue factor (TF). Coagulant TF is constitutively expressed by extravascular cells, but there is increasing evidence that TF can also be present within the blood, in particular during pathological conditions. Such TF is exposed on circulating cell-derived vesicles, and its presence has bee...
journal_title：Thrombosis research
pub_type： 杂志文章,评审
doi：10.1016/j.thromres.2012.08.281
更新日期：2012-10-01 00:00:00
abstract：:Epidemiological studies have shown that oral contraceptives increase the risk of thromboembolic disease in susceptible women however the mechanisms involved are unclear. We investigated whole blood platelet aggregation in 44 women randomly allocated to 6 cycles of treatment with either gestodene (75ug) or desogestrel ...
journal_title：Thrombosis research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/0049-3848(96)00013-8
更新日期：1996-02-15 00:00:00
abstract：:We examined the effects of verapamil on platelet function. Verapamil (0.5 micrograms/ml) in this study inhibited platelet aggregation induced by threshold amounts of ADP, AA, and epinephrine. With higher concentrations of aggregating stimuli, verapamil caused a dose-dependent inhibition of aggregation. Verapamil reduc...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(83)90181-0
更新日期：1983-06-01 00:00:00
abstract：INTRODUCTION:Pre-eclampsia is an important cause of maternal morbidity and mortality. Its etiology is still unknown. Clinical symptoms correlate with activation of coagulation and inherited thrombophilia has been associated with pre-eclampsia. ABO blood group has been associated with thrombotic disorders and pre-eclamp...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2008.11.012
更新日期：2009-06-01 00:00:00
abstract：:Upon stimulation or apoptosis, eukaryotic cells shed membrane vesicles of submicron size. These so-called microparticles (MPs) are detected and characterized based on the exposure of antigens characteristic of their respective parental cells and on the increased distribution of negatively charged phospholipids to the ...
journal_title：Thrombosis research
pub_type： 杂志文章,评审
doi：10.1016/S0049-3848(08)70019-7
更新日期：2008-01-01 00:00:00
abstract：:An insertion/deletion (4G/5G) polymorphism in what has been shown to be an enhancer/repressor binding site in the promoter region of the PAI-1 gene has been related to plasma PAI-1 activity. Transfection studies demonstrated increased interleukin-1 stimulated PAI-1 synthesis in cells containing the 4G sequence. To stu...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/s0049-3848(98)00132-7
更新日期：1998-12-01 00:00:00
abstract：INTRODUCTION:Pulmonary embolism (PE) is a common cause of morbidity and mortality. In this study, we investigated patterns of morbidity and mortality from PE in Australia. MATERIALS & METHODS:Australian government databases were used to extract data on age and sex specific rates of mortality between 1997 and 2007, and...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2013.04.032
更新日期：2013-07-01 00:00:00
