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 muscarinic transduction system in experimental models of cardiac hypertrophy (CH) have suggested that the myocardial phenotype at the sinus-node level may also play a role. A transgenic strain of mice with atrial overexpression of the beta 1-adrenergic receptors was generated with attenuated HRV, which demonstrates that the phenotype itself is a determinant of HRV. HRV is explored by noninvasive techniques, including simple determination of the standard error of the mean, time-domain analysis, and Fourier transformation. We recently developed a time and frequency domain method of analysis, the smoothed pseudo-Wigner-Ville transformation, which allows better exploration of nonstationarity. Nonlinear methods have also been applied due to the extreme complexity of the biological determinants, and have provided evidence of a chaotic attractor in certain conditions. It is proposed that in steady state a very simple process, which is not completely deterministic, could better explain intermit interval regulations than chaotic behavior. In contrast, under extreme circumstances the regulation proceeds using chaotic behavior. Arrhythmias and HRV can be quantitated in 16-month-old unanesthetized spontaneously hypertensive rats (SHR). Ventricular premature beats are more frequent in SHR than in age-matched controls; they disappear after converting enzyme inhibition (CEI) relative to the reduction of both cardiac hypertrophy and ventricular fibrosis. HRV is attenuated in SHR, as it is in compensatory CH in humans. When CH is prevented, HRV returns to normal. CEI is therefore antiarrhythmic. Another pharmacological application of this concept concerns the bradycardic agents that may improve HRV.
journal_name
Cardiovasc Drugs Therjournal_title
Cardiovascular drugs and therapyauthors
Swynghedauw B,Jasson S,Chevalier B,Clairambault J,Hardouin S,Heymes C,Mangin L,Mansier P,Médigue C,Moalic JM,Thibault N,Carré Fdoi
10.1007/BF00053024subject
Has Abstractpub_date
1997-01-01 00:00:00pages
677-85issue
6eissn
0920-3206issn
1573-7241journal_volume
10pub_type
杂志文章,评审abstract::The present study was undertaken on 10 patients with angina undergoing percutaneous transluminal coronary angioplasty. The angioplasty procedure consisted of two successive 30-second balloon inflations at 5 minute intervals. After the first inflation, nicorandil (0.1 mg/kg) was given intravenously over a 2-minute peri...
journal_title:Cardiovascular drugs and therapy
pub_type: 临床试验,杂志文章
doi:10.1007/BF00878473
更新日期:1995-03-01 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
abstract::To compare the antiischemic effects of intracoronary administration of a beta blocker, atenolol, and of a calcium antagonist, nifedipine, on the clinical and electrocardiographic signs of myocardial ischemia induced by balloon occlusion of the coronary artery, we studied 32 consecutive patients undergoing routine PTCA...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/BF00051147
更新日期:1992-06-01 00:00:00
abstract::The following discourse addresses the pharmacologic profile of KT-362, its clinical potential as an anti-arrhythmic agent with associated hypotensive effects, as well as its additional related potential in myocardial ischemia and related sequellae, and the specific cellular actions that may be responsible for these po...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/BF02018262
更新日期:1990-10-01 00:00:00
abstract::Thiazide diuretics are particularly efficacious in the treatment of hypertension in blacks. A number of observations suggest that many hypertensive blacks have features consistent with a status of "corrected" volume expansion. Our studies, as well as those of other investigators, show that the Na,K pump is inhibited i...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/BF02603181
更新日期:1990-03-01 00:00:00
abstract::We studied the acute and chronic effects of propionyl-L-carnitine (PLC) on mechanical function of isolated rabbit heart. Propionyl-L-carnitine was either directly delivered in the perfusate (10(-9) to 10(-3) M) or intraperitoneally injected (250 mg/kg) for 10 days to the animals. When added acutely, propionyl-L-carnit...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/BF00128239
更新日期:1991-02-01 00:00:00
abstract:AIM:To review whether brain natriuretic peptides (BNP) can be used as a surrogate for the traditional methods of assessing functional status in interventional studies of patients with left ventricular systolic dysfunction (LVSD). METHODS AND RESULTS:The traditional methods for assessing functional status including New...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1023/B:CARD.0000033643.93393.46
更新日期:2004-05-01 00:00:00
abstract::Mivazerol, 3-[1(H-imidazol-4-yl)methyl]-2-hydroxybenzamide hydrochloride, is a selective alpha 2-adrenoceptor agonist designed for the prevention of myocardial infarction in perioperative patients. Because unintended hypothermia occurs frequently during surgery, we were interested, in this study, to examine the relati...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1023/a:1007762107360
更新日期:1997-12-01 00:00:00
abstract::Early reperfusion after an organ ischemia is essential to salvage tissue from eventual death. However, abundant evidence suggests that reperfusion also elicits pathophysiological changes responsible for additional tissue injury after restoration of blood flow. Postconditioning (Postcon) defined as rapid sequential int...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/s10557-010-6240-1
更新日期:2010-06-01 00:00:00
abstract::An 82-year old man was admitted with acute pulmonary edema. Myocardial ischemia and electrolyte abnormalities were excluded and he responded promptly to frusemide, nitrates and morphine. On admission, the duration of the QRS interval was markedly abnormal at 240 ms with a nonspecific intraventricular conduction defect...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1023/a:1027384731525
更新日期:2003-07-01 00:00:00
abstract::The calcium antagonist (CA) controversy has been fueled in part by disagreements among scientists and clinicians over the scientific documentation required for drugs used to treat lifelong conditions. From a public health perspective, there are three unanswered questions: (1) Does long-term use of CAs convey health be...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/BF00051111
更新日期:1996-09-01 00:00:00
abstract::ATP generates nitric oxide (NO) via activation of P2y receptors, and is degraded to adenosine. This study was undertaken to examine whether ATP causes coronary hyperemic flow via purinoceptors-, NO- and adenosine-dependent mechanisms, and attenuates the severity of contractile and metabolic dysfunction in the ischemic...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1023/a:1007899822136
更新日期:1999-09-01 00:00:00
abstract:PURPOSE:The prevalence and consequences of prediabetic dysglycemia and undiagnosed diabetes is unknown in patients with heart failure (HF) and preserved ejection fraction (HFpEF) and has not been compared to heart failure and reduced ejection fraction (HFrEF). METHODS:We examined the prevalence and outcomes associated...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/s10557-017-6754-x
更新日期:2017-12-01 00:00:00
abstract::The purpose of the present study was to test whether the administration of a vascular-selective organic calcium antagonist (nisoldipine) at the onset of early mechanical reperfusion (by coronary angioplasty) in acute myocardial infarction could prevent or attenuate postischemic stunning and enhance the recovery of lef...
journal_title:Cardiovascular drugs and therapy
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1023/a:1007713118941
更新日期:1997-03-01 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::Pulmonary arterial hypertension is a rare disease, with drug-induced causes even more uncommon, accounting for only 10% of cases in large registry series. Predisposing factors for drug-induced PAH have not been completely defined. This review summarizes drugs with definite, possible, or likely association to pulmonary...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/s10557-019-06920-x
更新日期:2019-12-01 00:00:00
abstract:INTRODUCTION:Surrogate markers represent a significant contribution to early diagnosis, longitudinal prognoses, and outcome prediction in cases of hypertension. They often enable detection of disease and disease potential when the disease is still subclinical and are useful noninvasive tools for designing and evaluatin...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/s10557-009-6177-4
更新日期:2009-08-01 00:00:00
abstract::The effects of administration of guava and papaya fruit (100 g/day), vegetables, and mustard oil (5 g/day) (group A); antioxidant vitamins C (50 mg/day) and E (30 mg/day), plus betacarotene (10 mg/day) (group B); a high-fat (5-10 g/day) (group C); or a low-fat (4-5 g/day) diet (group D) were compared over 24 diet week...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/BF00879869
更新日期:1995-12-01 00:00:00
abstract:PURPOSE:Protein kinase C alpha (gene: PRKCA) is a key regulator of cardiac contractility. Two genetic variants have recently been discovered to regulate PRKCA expression in failing human heart tissue (rs9909004 [T → C] and rs9303504 [C → G]). The association of those variants with clinical outcomes in patients with hea...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/s10557-019-06909-6
更新日期:2019-12-01 00:00:00
abstract:BACKGROUND:Clinical guidelines recommend peri-cardioversion anticoagulation in patients with atrial fibrillation (AF). We performed a systematic review and meta-analysis to compare the safety and efficacy of direct oral anticoagulants (DOACs) versus vitamin K antagonists (VKAs) in patients with AF undergoing cardiovers...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,meta分析
doi:10.1007/s10557-019-06869-x
更新日期:2019-06-01 00:00:00
abstract:AIMS:The primary ain of this study was to investigate the effect of carbachol on ventricular repolarisation in an intact animal heart. METHODS:In five sheep, carbachol was administered to the left circumflex coronary artery (LCX) at 1.0 and 2.5 micromol/ml/min respectively for 3 min. Multiple unipolar ECGs were acquir...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1023/a:1027324412869
更新日期:2003-07-01 00:00:00
abstract::Torsades de pointes (TdP) is a life-threatening ventricular tachycardia that occurs in the setting of a prolonged QT interval and is most frequently related to administration of antiarrhythmic drugs. Patients with organic heart disease, with low serum electrolyte levels, with a previous episode of TdP and with bradyca...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/BF03029778
更新日期:1991-04-01 00:00:00
abstract::This article considers the dominant role of trials involving thousands of patients--the mega-trials--in cardiovascular disease. Problems with large trials mean that alternative strategies must be developed to aid the introduction of new drugs. The limitations of meta-analysis, and of trials with combined and surrogate...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/BF00053034
更新日期:1997-01-01 00:00:00
abstract:BACKGROUND:Although Takotsubo syndrome (TS) was once considered to be rare and largely benign, it is now recognized to represent a major cause of cardiac morbidity and mortality, especially in ageing women. The biochemical precipitant of attacks of TS is an increase in catecholamine concentrations within the myocardium...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/s10557-019-06918-5
更新日期:2020-02-01 00:00:00
abstract::The novel insights provided by the molecular genetic applied to the study of cardiac arrhythmias have just started to scratch the surface of the complex relationships between the genetic abnormalities of ion channel structure and the susceptibility to life threatening ventricular arrhythmias. These crucial pieces of i...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1023/a:1015793113771
更新日期:2002-03-01 00:00:00
abstract::Ranolazine, an inhibitor of the late current of the cardiac action potential (late I(Na)), is a well established clinical treatment for chronic angina. The late INa in cardiac myocytes also plays an important role in the pathophysiology of acute myocardial ischemia and reperfusion, and thus is a potential therapeutic ...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/s10557-014-6548-3
更新日期:2014-10-01 00:00:00
abstract:AIM:To study the relationship between Daxx expression and the antiapoptotic effects of probucol in THP-1 macrophage. MATERIALS AND METHODS:Apoptosis of THP-1 derived macrophages was induced by exposure to oxidized low density lipoprotein (oxLDL). The development of apoptosis was determined by flow cytometry analysis a...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/s10557-007-6002-x
更新日期:2007-02-01 00:00:00
abstract:PURPOSE:Hypothyroidism (HT) is associated with accelerated atherosclerosis (AS). The efficacy of traditional strategies of hypothyroid AS remains controversial. Here, we aimed to deepen the understanding of the HT-induced acceleration of AS, to decrease the residual risk of coronary artery disease (CAD) and to find a n...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/s10557-020-06996-w
更新日期:2020-06-03 00:00:00
abstract::Diabetic cardiomyopathy as a distinct entity was first recognized by Rubler et al. in diabetics with congestive heart failure (CHF), who had no evidence of coronary atherosclerosis. The Framingham study showed a 2.4-fold increased incidence of CHF in diabetic men and a 5.1-fold increase in diabetic women over 18 years...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/BF00877091
更新日期:1994-02-01 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