Abstract:
BACKGROUND:Low-molecular-weight heparins may have a higher benefit to risk ratio than unfractionated heparin in preventing perioperative thrombosis. The antithrombotic effects of low-molecular-weight heparins, given as adjunctive therapy to alteplase and aspirin, have not previously been compared with those of unfractionated heparin in experimental models of coronary artery thrombosis. METHODS:Occlusive coronary thrombosis was induced in 5 groups of 10 dogs by placing a copper coil into the left anterior descending coronary artery. After 1 h of occlusion, intravenous alteplase (0.1 mg/kg bolus followed by 0.01 mg/kg/min for 30 min), and aspirin (bolus of 5 mg/kg) were administered in combination with one of the following study treatments given intravenously for 2 h: placebo (group 1); unfractionated heparin (200 IU/kg bolus followed by 100 IU/kg/h, group II); the low-molecular weight heparin, nadroparin calcium, in three different doses (100 IU/kg bolus followed by 50 IU/kg/h, group III; 200 IU/kg bolus followed by 100 IU/kg/h, group IV; and 300 IU/kg followed by 150 IU/kg/h, group V). Coronary patency was assessed with angiography at 10 min intervals and hemostasis parameters were measured at baseline, after 1 h of occlusion, and 30 and 120 min after commencing drug administration. RESULTS:Optimal reperfusion [Thrombolysis in Myocardial Infarction (TIMI) flow grade 3 without reocclusion] was more frequently observed in groups II (6/10), IV (8/10) and V (9/10) than in groups I (1/10) and III (3/10) (P < 0.05). Groups II and IV had similar patency rates (P = NS) and were therefore assumed to represent equivalent antithrombotic doses. Both nadroparin calcium and unfractionated heparin effectively prevented new thrombin generation as shown by repeated measurements of thrombin-antithrombin III complex levels in plasma. At equivalent antithrombotic doses, nadroparin calcium (group IV) was associated with significantly lower steady state values than standard heparin (group II) for activated partial thromboplastin time (41.3 +/- 48.9 versus 134.7 +/- 61.6 s), anti-Xa levels (2.4 +/- 0.5 vs 3.4 +/- 0.9 U/ml) and anti-IIa levels (0.8 +/- 0.1 versus 2.1 +/- 0.7 U/ml). CONCLUSION:Both nadroparin calcium and unfractionated heparin significantly enhance alteplase-induced thrombolysis in aspirin-treated dogs. At equivalent antithrombotic doses, nadroparin calcium was associated with less prolongation of the activated partial thromboplastin time and lower steady-state anti-Xa and anti-IIa activities.
journal_name
Coron Artery Disjournal_title
Coronary artery diseaseauthors
Jun L,Arnout J,Vanhove P,Dol F,Lormeau JC,Herbert JM,Collen D,Van de Werf Fsubject
Has Abstractpub_date
1995-03-01 00:00:00pages
257-63issue
3eissn
0954-6928issn
1473-5830journal_volume
6pub_type
杂志文章abstract:BACKGROUND:Following percutaneous transluminal coronary angioplasty (PTCA), the extent of vascular injury is underestimated by angiographic assessment. Conventional intracoronary ultrasound (ICUS) imaging provides additional information with regard to the extent of dissections but requires mental reconstruction of cons...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/01.mca.0000064020.05024.e5
更新日期:2003-05-01 00:00:00
abstract:AIM:This study aimed to investigate whether patients with very low left ventricular ejection fractions (LVEF) should be accepted for reoperative coronary artery bypass grafting (CABG). STUDY POPULATION:Between January 1990 and December 1993, 1681 patients underwent primary CABG and 308 (15.5%) reoperative CABG. One hu...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-199505000-00010
更新日期:1995-05-01 00:00:00
abstract:BACKGROUND:To maintain the integrity of tissues, endothelial cells play critical roles. Fas ligand (FasL) is well known to deliver a death signal through its receptor, Fas. The Fas/FasL system may concomitantly induce expressions of interleukin-8 (IL-8) and monocyte chemoattractant protein-1 (MCP-1) besides triggering ...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-200302000-00010
更新日期:2003-02-01 00:00:00
abstract::During myocardial ischemia, cardiomyocytes can undergo apoptosis or compensatory hypertrophy. Fas expression is upregulated in the myocardial ischemia and is coupled to both apoptosis and hypertrophy of cardiomyocytes. The role of Fas in apoptosis induction or cardiomyocyte hypertrophy during ischemic conditions is, h...
journal_title:Coronary artery disease
pub_type: 杂志文章,评审
doi:10.1097/MCA.0b013e3283093707
更新日期:2008-11-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to clarify clinical and angiographical characteristics of acetylcholine (ACh)-induced spasm in the right and left coronary artery. METHODS AND RESULTS:We performed 557 consecutive procedures of spasm provocation tests of ACh from January 1991 to December 2000 in patients withou...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-200206000-00005
更新日期:2002-06-01 00:00:00
abstract:BACKGROUND:We have previously identified a phenomenon that we called vascular rhexis (VR) after coronary occlusion in mice. To explore its potential pathogenetic impact on the destruction of vessels described, its potential universality, and its characterization as a scaffolding for evaluating amelioration, we studied ...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0b013e32835d6688
更新日期:2013-05-01 00:00:00
abstract:BACKGROUND:The plasma level of homocysteine is an independent risk factor for atherosclerotic vascular disease. The relationship between plasma homocysteine level and the onset of coronary artery disease (CAD) has not been established. OBJECTIVE:To investigate the relationship between plasma homocysteine level and the...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-199910000-00002
更新日期:1999-10-01 00:00:00
abstract:BACKGROUND:Elderly patients with ischaemic heart disease are often treated more conservatively and for longer than younger patients, but this strategy may result in subsequent invasive intervention of more advanced and higher risk coronary disease. METHODS:We performed a retrospective analysis of 109 patients aged > o...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-199711000-00006
更新日期:1997-11-01 00:00:00
abstract:BACKGROUND:P-selectin, an adhesion molecule of the selectin family, is expressed on the surface of activated thrombocytes by thrombin. The aim of the present study was to assess the predictive value of P-selectin (estimated by flow cytometric assay) for acute cardiac events in acute coronary syndrome. METHODS:The stud...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-199508000-00009
更新日期:1995-08-01 00:00:00
abstract:BACKGROUND:The role of thrombolytic therapy (TT) and percutaneous coronary interventions (PCIs) in subgroups of patients with right ventricular infarction (RVI) has not been evaluated. METHODS AND RESULTS:We risk-stratified 302 patients with RVI into three subsets upon admission. Class A (n=197) comprised patients wit...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-200202000-00008
更新日期:2002-02-01 00:00:00
abstract:OBJECTIVE:Data on the comparative effectiveness of contemporary drug-eluting stents (DES) in the unrestricted, real-world setting are limited. We investigated the long-term effectiveness and safety of contemporary different drug-eluting stents by means of multiple treatment propensity score weighting. PATIENTS AND MET...
journal_title:Coronary artery disease
pub_type: 杂志文章,多中心研究
doi:10.1097/MCA.0000000000000730
更新日期:2019-06-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to explore the individual effects of the CYP2C19 G681A polymorphism and omeprazole use and their interaction on clopidogrel responsiveness in acute coronary syndrome (ACS). The CYP2C19 G681A polymorphism and omeprazole use were both known for retarding the effects of clopidogrel unde...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0000000000000808
更新日期:2020-05-01 00:00:00
abstract:BACKGROUND:Second-generation drug-eluting stents (DES) have been used widely to treat DES in-stent restenosis (ISR), which remains a clinical challenge. Knowledge of the outcomes of repeated second-generation DES implantation for focal versus nonfocal-type ISR is still missing. METHODS:In the current study, 254 patien...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0000000000000283
更新日期:2015-11-01 00:00:00
abstract::Ischemic heart disease is a major cause of morbidity and mortality throughout the world. Percutaneous coronary intervention (PCI) has rapidly evolved from balloon angioplasty to drug-eluting stents over the past 25 years and has become an important treatment option for coronary heart disease. During PCI, atherosclerot...
journal_title:Coronary artery disease
pub_type: 杂志文章,评审
doi:10.1097/MCA.0b013e32833729e3
更新日期:2011-03-01 00:00:00
abstract:BACKGROUND:Coronary heart disease is mainly caused by the effects of obstruction to blood flow in the coronary arteries from discrete mural lesions that encroach into the lumen and usually occur in arteries that are involved by atherosclerosis. Even though the level of certain lipoproteins is indisputably related to th...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-199303000-00006
更新日期:1993-03-01 00:00:00
abstract:OBJECTIVE:Erectile dysfunction and coronary artery disease share similar risk factors. Although phosphodiesterase-5 inhibitors used to treat erectile dysfunction do not adversely affect hemodynamic parameters in patients with coronary artery disease, their effects on myocardial blood flow are unknown. METHODS:In a ran...
journal_title:Coronary artery disease
pub_type: 杂志文章,随机对照试验
doi:10.1097/00019501-200609000-00001
更新日期:2006-09-01 00:00:00
abstract:AIM:To determine how hypertension affects the left ventricular diastolic function of patients with effort angina. METHODS:We performed radionuclide ventriculography in 14 patients with isolated stenosis of the left anterior descending coronary artery and in seven healthy volunteers. RESULTS:Neither global nor regiona...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:
更新日期:1994-10-01 00:00:00
abstract:BACKGROUND:Spinal cord stimulation (SCS) is effective in the treatment of severe coronary artery disease (CAD) unresponsive to anti-anginal medication or revascularization procedures. However, there is still concern about its safety. OBJECTIVE:To investigate the reliability, morbidity, and mortality aspects of SCS in ...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-199701000-00005
更新日期:1997-01-01 00:00:00
abstract:AIM:We evaluated the accuracy of multidetector computed tomography in detecting coronary artery disease and how it could change the indication to coronary angiography in patients with suspected cardiac chest pain. METHODS AND RESULTS:We enrolled 142 consecutive patients who had already performed an exercise electrocar...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0b013e328035f8ae
更新日期:2007-06-01 00:00:00
abstract::The coronary microvasculature plays a key role in determining and modulating coronary blood flow across the spectrum of myocardial demand. Our understanding of this complex system has been limited partly due to our inability to visualize the anatomy of an extensive microvascular bed and its complicated functional path...
journal_title:Coronary artery disease
pub_type: 杂志文章,评审
doi:10.1097/MCA.0000000000000119
更新日期:2014-08-01 00:00:00
abstract:OBJECTIVE:To investigate the predictive value of the PRECISE-DAPT score for the development of arrhythmias in patients with ST-segment elevation myocardial infarction undergoing primary percutaneous coronary intervention. METHOD:A total of 706 patients with a diagnosis of ST-segment elevation myocardial infarction who...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0000000000000788
更新日期:2019-11-01 00:00:00
abstract::The phenomenon of myocardial stunning has been observed in all animal species studied. The possible occurrence of myocardial stunning in man has been demonstrated after either regional ischemia (such as exercise-induced angina, vasospastic or unstable angina) or after global ischemia (i.e., after cardioplegic arrest d...
journal_title:Coronary artery disease
pub_type: 杂志文章,评审
doi:10.1097/00019501-200108000-00004
更新日期:2001-08-01 00:00:00
abstract::The patient population with the need for oral anticoagulation to reduce stroke risk associated with atrial fibrillation (AF) and dual antiplatelet therapy to prevent stent thrombosis and myocardial infarction after percutaneous coronary intervention is increasing. However, patients treated with a triple therapy consis...
journal_title:Coronary artery disease
pub_type: 杂志文章,评审
doi:10.1097/MCA.0000000000000549
更新日期:2017-12-01 00:00:00
abstract:OBJECTIVE:To examine the contribution of six cardiovascular polymorphisms to the occurrence of a first event of ischemic heart disease (IHD) in a primary care population with a high prevalence of hypertension. Furthermore, we specified the data for sex and age. METHODS:In this cross sectional case-control study, patie...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0b013e328330d541
更新日期:2009-12-01 00:00:00
abstract:BACKGROUND:Free-radical generation after successful thrombolysis in acute myocardial infarction may jeopardize ischaemic but viable myocardium, thus limiting the optimal benefits of reperfusion. METHODS:Circulating free-radical activity was assessed in 25 consecutive patients with acute myocardial infarction. Those wh...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-199309000-00003
更新日期:1993-09-01 00:00:00
abstract:BACKGROUND:Although smoking is a risk factor for coronary atherosclerosis, the age-related impact on lesion characteristics and plaque instability remains unclear. PATIENTS AND METHODS:In ADAPT-DES, 780 patients with 916 culprit lesions were evaluated by preprocedural grayscale and virtual histology-intravascular ultr...
journal_title:Coronary artery disease
pub_type: 杂志文章,多中心研究
doi:10.1097/MCA.0000000000000268
更新日期:2015-09-01 00:00:00
abstract:BACKGROUND:We hypothesized that an increase in plasminogen activator inhibitor 1 (PAI-1) might reduce low-density lipoprotein (LDL) particle size in conjunction with triglyceride (TG) metabolism disorder, resulting in an increased risk of atherosclerotic cardiovascular disease (ASCVD). METHODS:This study was carried o...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0000000000000521
更新日期:2017-11-01 00:00:00
abstract:BACKGROUND:Although coronary artery bypass graft surgery (CABG) has been proven to have mortality and morbidity benefits in patients with non-ST elevation myocardial infarction and multivessel disease, the appropriate timing of this procedure remains unclear. Therefore, we proposed a propensity score-matched analysis c...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0000000000000537
更新日期:2017-12-01 00:00:00
abstract:OBJECTIVES:The activity of matrix Gla-protein (MGP), a potent inhibitor of vascular calcification, is dependent on carboxylation using vitamin K as a co-factor. In animals, low intake of total vitamin K has been shown to accelerate vascular calcification via the MGP mechanism. This has led to the hypothesis that low le...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-200505000-00010
更新日期:2005-05-01 00:00:00
abstract:BACKGROUND:The aim of this study was to evaluate the safety and efficacy of the novel NovaCross microcatheter system in patients with ischemic heart disease due to coronary chronic total occlusions (CTO). METHODS:A total of 191 subjects between the ages of 25-80 years were recruited in 10 investigational sites. Each s...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0000000000000947
更新日期:2020-11-01 00:00:00