Abstract:
PURPOSE:The progressive shortening of the atrial effective refractory period (ERP) during atrial fibrillation (AF) might be due to the activation of the KATP channels by rapid atrial rates. We tested the hypothesis that the cardioselective, sarcolemmal KATP channel blocker HMR 1098 would prevent atrial ERP shortening during AF. METHODS AND RESULTS:Nine dogs were treated with HMR 1098 (3 mg/kg bolus injection followed by a continuous intravenous (i.v.) infusion at 17 microg/kg/min rate maintained throughout the study) and 7 dogs served as controls receiving i.v. saline. Pharmacological autonomic blockade was induced by i.v. administration of atropine (0.04 mg/kg) and propranolol (0.2 mg/kg) and maintained throughout the study by continuous i.v. infusion of atropine (0.007 mg/kg/h) and propranolol (0.04 mg/kg/h). Rapid right atrial pacing at 50 msec cycle length (CL) was initiated and maintained for 6 hours. High right atrial ERP (HRA-ERP) and corrected sinus node recovery time (HRA-cSNRT), coronary sinus ERP (CS-ERP) and corrected SNRT (CS-cSNRT) at three (400, 300, 200 msec) CLs were measured before and after pacing at different time points. Baseline values were not different between control and treated dogs. In the control group the HRA-ERP progressively shortened (from 179 +/- 21 msec at baseline to 161 +/- 23 msec at 360 min at 400 msec CL) ( p = 0.002), with a gradual decrease, loss or inversion of ERP rate adaptation at shorter (300, 200 msec) CLs. HMR 1098 treatment did not prevent the shortening of HRA-ERP during the first 2 to 3 hours of rapid atrial pacing. However, beginning at 180-240 min, HMR 1098 increased the HRA-ERP ( p = 0.01) to baseline by 360 min. HMR 1098 treatment did not prevent another feature of atrial electrical remodeling, the flattening or inversion of ERP rate adaptation. In neither group did CS-ERP shortening occur. The maximum cSNRT at 360 min prolonged significantly in both groups during HRA and CS pacing as well compared with baseline. CONCLUSIONS:HMR 1098 treatment did not prevent the shortening of HRA-ERP, the salient feature of atrial electrical remodeling in the first 2 to 3 hours of rapid atrial rates, but did prevent it thereafter. Another characteristic feature of atrial electrical remodeling, the flattening or inversion of physiological ERP rate adaptation was not prevented by HMR 1098 treatment. Sinus node depression was detectable after short-term (6 hours) rapid atrial pacing and was not affected by HMR 1098.
journal_name
Cardiovasc Drugs Therjournal_title
Cardiovascular drugs and therapyauthors
Vereckei A,Gögelein H,Wirth KJ,Zipes DPdoi
10.1023/B:CARD.0000025752.63337.b2subject
Has Abstractpub_date
2004-01-01 00:00:00pages
23-30issue
1eissn
0920-3206issn
1573-7241pii
5268660journal_volume
18pub_type
杂志文章abstract::We compared the time-course of the hemodynamic effect of isosorbide dinitrate (ISDN), 5 mg, in the form of sublingual tablet and oral spray, in 15 patients with isolated chronic pulmonary congestion (pulmonary arterial end-diastolic pressure of 15 mmHg or more in the presence of normal or only slightly reduced cardiac...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/BF00051192
更新日期:1988-11-01 00:00:00
abstract:PURPOSE:The need for novel approaches to cardiovascular drug development served as the impetus to convene an open meeting of experts from the pharmaceutical industry and academia to assess the challenges and develop solutions for drug discovery in cardiovascular disease. METHODS:The Novel Cardiovascular Therapeutics S...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/s10557-017-6739-9
更新日期:2017-08-01 00:00:00
abstract:PURPOSE:Mechanical stretch is an arrhythmogenic factor found in situations of cardiac overload or dyssynchronic contraction. Ranolazine is an antianginal agent that inhibits the late Na (+) current and has been shown to exert a protective effect against arrhythmias. The present study aims to determine whether ranolazin...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/s10557-015-6587-4
更新日期:2015-06-01 00:00:00
abstract::People who consume a diet rich in fruit and vegetables have lower risks of cancer, cardiovascular disease and all-cause mortality. Many prospective cohort studies have reported inverse associations between dietary intake or blood levels of beta-carotene and risks of cancer. Several large-scale trials were set up to as...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1023/a:1022134418372
更新日期:2002-09-01 00:00:00
abstract:INTRODUCTION:Atrial dilatation is commonly associated with atrial fibrillation (AF), but the electrophysiological mechanisms and the implications for anti-arrhythmic therapy are poorly understood. In a model of acute stretch-related AF in isolated rabbit hearts, we evaluated the electrophysiological effects of three di...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/s10557-007-6001-y
更新日期:2007-02-01 00:00:00
abstract::Heart rate varies with respiration, blood pressure, emotion, etc., and heart rate variability (HRV) is presently one of the best indices to predict fatal issues in cardiac failure and after myocardial infarction. HRV depends on various reflexes. In addition, parallel studies of HRV and the myocardial adrenergic and mu...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/BF00053024
更新日期:1997-01-01 00:00:00
abstract::Twenty-nine patients with severe heart failure (NYHA III) were randomly assigned to receive therapy with an angiotensin converting enzyme inhibitor (ACE inhibitor), either captopril or enalapril. The mean daily dosage of captopril was 56 +/- 5 mg and of enalapril 9.5 +/- 0.4 mg. After a mean of 8 +/- 1 days, the influ...
journal_title:Cardiovascular drugs and therapy
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/BF00054567
更新日期:1992-04-01 00:00:00
abstract::Glucose-insulin-therapy for acute myocardial infarction (AMI) has had a long history, going back 37 years to the pioneering concepts of Sodi-Pallares. Although a recent meta-analysis of a number of smaller trials has suggested mortality benefit, it is only the South American trial, published in Circulation in 1998, th...
journal_title:Cardiovascular drugs and therapy
pub_type: 评论,社论,评审
doi:10.1023/a:1007757407246
更新日期:1999-05-01 00:00:00
abstract::Though the exact physiology and pathology of lipoprotein(a) [Lp(a)] remains unknown, it has been demonstrated that increased serum Lp(a) levels are correlated with an increased risk of atherosclerotic vascular disease. The effects of lipid-lowering drugs on Lp(a) levels is unclear because of inconsistencies between st...
journal_title:Cardiovascular drugs and therapy
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1007/BF00878550
更新日期:1995-10-01 00:00:00
abstract::The present study was designed to evaluate the effects of oral verapamil and normal diet on regression of atherosclerotic plaque in cholesterol fed rabbits. Forty-three rabbits were separated into 6 groups and studied for 24 weeks. All groups had a cholesterol diet for the first 12 weeks. Group I was then sacrificed a...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/BF02125835
更新日期:1987-01-01 00:00:00
abstract::Antihypertensive drugs may lower blood pressure through very different mechanisms, initially as well as during chronic use. This article is a review of the immediate hemodynamic changes induced by a beta blocker (visacor), an alpha-receptor blocker (doxazosin), two calcium antagonists (tiapamil and nisoldipine), an an...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/BF01856510
更新日期:1990-08-01 00:00:00
abstract::Diuretics, either as monotherapy or in combination with other drugs in the management of hypertension, have retarded the development of left ventricular hypertrophy and congestive heart failure in many patients. Diuretics also remain one of the most effective therapies in the treatment of congestive heart failure, whe...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1023/a:1007791814100
更新日期:1997-05-01 00:00:00
abstract::The place of digoxin in the pediatric cardiologist's armamentarium remains uncertain. As an antiarrhythmic, its use in the Wolff-Parkinson-White syndrome is obsolete, but it remains useful in the treatment of the chronic atrial fibrillation seen in some patients postoperatively and in children with dilated cardiomyopa...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/BF01881525
更新日期:1989-03-01 00:00:00
abstract::Recent surveys in the U.S. have reported, for the first time, that a significant number of patients with hypertension are finding that the cost of medication and treatment in general is an obstacle to treatment. The cost of management of hypertension can be contained if: a) the diagnostic workup is kept simple (this d...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/BF01857624
更新日期:1989-10-01 00:00:00
abstract::Tracer techniques have provided new insight in cardiology by allowing noninvasive studies of myocardial perfusion, function, metabolism, and, more recently, ligand-receptor interaction. Positron emission tomography allows accurate quantification and the use of natural substrates labelled with 11C, 13N, or 15O. Myocard...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/BF00051291
更新日期:1990-08-01 00:00:00
abstract::We used Folts' model of critical coronary artery stenosis with endothelial damage, which measures platelet-rich thrombus accumulation from cyclic flow reductions (CFRs). This paper reports results applied to trimetazidine, a member of the piperazine group. Trimetazidine at a dose of 1 mg/kg completely abolished CFRs c...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/BF00878324
更新日期:1993-02-01 00:00:00
abstract:OBJECTIVES:To evaluate and compare the functional type and the degree of antagonism of the selective angiotensin II type 1 receptor blockers (ARB) losartan, EXP 3174 (the active metabolite of losartan), valsartan and candesartan in human internal mammary arteries. METHODS:Human internal mammary arteries were obtained ...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1023/a:1021729909456
更新日期:2002-07-01 00:00:00
abstract::The present study was performed in order to compare the efficacy, safety, and tolerability of lisinopril, a long-acting angiotensin-converting enzyme (ACE) inhibitor, with captopril, the shorter acting ACE inhibitor available, in the treatment of elderly patients (mean age 70 +/- 0.5 years) with congestive heart failu...
journal_title:Cardiovascular drugs and therapy
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1023/a:1007704024393
更新日期:1997-03-01 00:00:00
abstract:BACKGROUND:Many studies have demonstrated a gap between guidelines for the prevention of cardiovascular disease (CVD) and their implementation in clinical practice. AIM:The PEGASE education program has been devised with an aim to improve the management of patients at high risk of CVD. METHODS:In a multicentre study c...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1007/s10557-008-6137-4
更新日期:2008-12-01 00:00:00
abstract::The purpose of the study was to determine whether a new KATP channel opener, Y 26763 (Y), can influence the electrophysiological properties in the ischemic myocardium as well as to determine whether the blunting effect of the alpha 1-adrenoceptor antagonist bunazosin (BN) on an ischemia-induced shortening of repolariz...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1023/a:1007830607733
更新日期:2000-06-01 00:00:00
abstract:PURPOSE:Ranolazine (RAN) added to amiodarone (AMIO) has been shown to accelerate termination of postoperative atrial fibrillation (POAF) following coronary artery bypass surgery in patients without heart failure (HF). This study aimed to investigate if treatment efficacy with AMIO or AMIO + RAN differs between patients...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,随机对照试验
doi:10.1007/s10557-018-6832-8
更新日期:2018-12-01 00:00:00
abstract:PURPOSE:Homocysteine (Hcy) is an independent risk factor for cardiovascular diseases that impairs endothelial function. We investigated whether the impaired endothelial function can be restored by the eNOS transcription enhancer AVE3085 in porcine coronary arteries. The effects of AVE3085 against Hcy on eNOS-NO functio...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/s10557-013-6478-5
更新日期:2013-12-01 00:00:00
abstract:PURPOSE:Although erythropoietin (EPO) is known to express angiogenic and cardioprotective effects, it also induces hypertension, polycythemia, and platelet activation, which may cause serious adverse effects in patients with cardiovascular diseases. We compared the angiogenic effects of EPO and its nonerythropoietic de...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/s10557-013-6438-0
更新日期:2013-04-01 00:00:00
abstract::In vitro and in vivo studies have demonstrated many similarities between the three calcium antagonists verapamil, nifedipine, and diltiazem in relation to protection of the myocardium during hypoxia. Important clinical differences exist between the three drugs when they are used during or after an acute myocardial inf...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/BF03029738
更新日期:1991-08-01 00:00:00
abstract::Amlodipine increases NO levels in coronary vessels and aorta via bradykinin-dependent mechanisms in vitro. We have previously reported that a long-acting Ca channel blocker, benidipine, increases cardiac NO levels in ischemic canine hearts, suggesting that benidipine may also protect against ischemia and reperfusion i...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1023/a:1011964222712
更新日期:2001-01-01 00:00:00
abstract::During acute myocardial ischemia, passage of potassium ions across the sarcolemma to the extracellular space is a well-established phenomenon. A recent hypothesis is that the ATP-dependent potassium channel plays a role in contributing to the potassium loss. As the potassium loss starts while the overall level of ATP ...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/BF00877615
更新日期:1993-08-01 00:00:00
abstract::Excess activity of the sympathetic nervous system (SNS) is linked to human obese hypertension and to salt-sensitive hypertension. Paradoxically, reduced SNS activity has been implicated as a contributor to obesity, particularly in animal models, and salt loading usually inhibits SNS activity. We have investigated the ...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/BF00120497
更新日期:1996-06-01 00:00:00
abstract::The modifying effect on exercise performance and neuroendocrine response of the nonselective beta blocker timolol (10 mg b.i.d. for 5 days) and the beta 1-selective beta blocker metoprolol (100 mg b.i.d. for 5 days) was studied. The hormones studied were growth hormone, prolactin, cortisol, renin, epinephrine, dopamin...
journal_title:Cardiovascular drugs and therapy
pub_type: 临床试验,杂志文章
doi:10.1007/BF01881530
更新日期:1989-03-01 00:00:00
abstract::Reducing elevated levels of low-density-lipoprotein cholesterol (LDL-C) significantly reduces the incidence of coronary heart disease (CHD) events and mortality in hypercholesterolemic patients. CHD risk reduction is proportional to LDL-C reduction. Despite this knowledge, many physicians are not applying existing tre...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1023/a:1013341606476
更新日期:2001-09-01 00:00:00
abstract::The pathogenetic theories and treatment of Raynaud's phenomenon are reviewed. In primary Raynaud's disease, most evidence supports a local defect at the digital artery level, with vasoconstriction or vasospasm of the digital arteries inducing the color changes. Normal sympathetic activity, low transmural arterial dist...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/BF00053426
更新日期:1990-01-01 00:00:00