Abstract:
:Ouabain, when applied to rings of the left circumflex coronary artery of the dog (which contains both alpha 1-adrenoceptors leading to contraction and beta 1-adrenoceptors leading to relaxation) caused an initial contraction which peaked within 15 minutes and a later secondary increase in tension which peaked within 60 minutes. These contractions were prevented by Ca2+ removal or by verapamil. Adrenergic denervation with 6-hydroxydopamine did not affect the initial contraction. Thus it is due to a nonadrenergic effect of the glycoside. Since the secondary increase in tension was prevented by adrenergic denervation and prazosin, it is likely to be due to norepinephrine released from adrenergic nerves acting on alpha-adrenoceptors. This interpretation was confirmed by the finding that ouabain, after a latent period of about 35 minutes, augmented the output of 3H-norepinephrine from helical strips of the artery previously incubated with tritiated transmitter. In rings contracted with prostaglandin F2 alpha, ouabain reduced beta-adrenergic relaxations caused by isoproterenol or exogenous norepinephrine, but not those caused by sodium nitroprusside. Thus, in this artery, ouabain depresses the responses of the beta-adrenoceptors to the norepinephrine which it releases, thereby permitting the neurotransmitter to cause contraction by activating postjunctional alpha 1-adrenoceptors.
journal_name
Cardiovasc Drugs Therjournal_title
Cardiovascular drugs and therapyauthors
Cooke JP,Shepherd JT,Vanhoutte PMdoi
10.1007/BF00051242subject
Has Abstractpub_date
1988-07-01 00:00:00pages
255-63issue
2eissn
0920-3206issn
1573-7241journal_volume
2pub_type
杂志文章abstract::To assess the effect of antihypertensive drugs on aortic distensibility, we evaluated the aortic distensibility of 33 hypertensive patients before and after antihypertensive treatment by using cine magnetic resonance imaging. Thirty three hypertensive patients were divided into three groups and treated for 12 weeks wi...
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:1007711617112
更新日期:1999-07-01 00:00:00
abstract::In animal models, calcium antagonists (Ca-A) administered before ischemia and reperfusion reduced myocardial necrosis, attenuated postischemic contractile dysfunction, and reduced tissue calcium. In 753 patients with acute myocardial infarction (AMI), we examined if use of Ca-A at the onset of symptoms (n = 127 patien...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1023/a:1007727518684
更新日期:1997-09-01 00:00:00
abstract::Eighteen hypertensive patients (13 males, 5 females; age 48 +/- 13; diastolic blood pressure greater than 95 mmHg), either previously untreated or who had been off treatment for more than 3 months, underwent M-mode echocardiography before (DO) and after (D90) 3 months of nicardipine therapy (60-90 mg/day). All echocar...
journal_title:Cardiovascular drugs and therapy
pub_type: 临床试验,杂志文章
doi:10.1007/BF01865511
更新日期:1989-08-01 00:00:00
abstract:PURPOSE:The PPAR-alpha agonists (fibrates) are commonly used in the treatment of dyslipidemia. It has been hypothesized that the cardio-protective effects of fibrates are partially due to immunomodulatory effects. However, there is a paucity of data regarding the effect of fibrates on neutrophilic chemokines such as ep...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/s10557-011-6368-7
更新日期:2012-04-01 00:00:00
abstract::Resistance arteries depolarize and constrict to elevations in intravascular pressure. However, many of the molecular aspects of this phenomenon are not known. We present evidence that large conductance calcium-dependent potassium (KCa) channels, which are activated by intracellular calcium and membrane depolarization,...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/BF00877627
更新日期:1993-08-01 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::True positive inotropy of enoximone is hard to prove clinically. It could increase the risk of myocardial ischemia when used in coronary artery disease (CAD). The analysis of the end-systolic pressure-volume relationship (ESPVR) as a load-independent parameter of the contractile left ventricular function (LVF) allows ...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/BF02018269
更新日期:1990-10-01 00:00:00
abstract::High-density lipoprotein cholesterol (HDL-c) has long been referred to as 'good cholesterol' due to its apparent inverse relationship with future CVD risk. More recent research has questioned a causal role for HDL-c in this relationship, however, as both genetic studies and numerous large-scale randomised controlled t...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/s10557-018-06846-w
更新日期:2019-04-01 00:00:00
abstract:OBJECTIVE:The aim was to study the pharmacodynamic interactions and safety of the co-administration of the calcium sensitizer levosimendan and the calcium antagonist felodipine in patients with coronary heart disease (CHD) and with normal ejection fraction (EF). METHODS:The study was a randomized, double blind, placeb...
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/b:card.0000015860.08185.6d
更新日期:2003-09-01 00:00:00
abstract::Cardiovascular disease is the leading cause of death in men and women in the USA. Once a patient experiences an acute coronary syndrome (ACS), they are at increased risk for hospital readmission within 30 days and 6 months after discharge and more importantly, they have worse survival. Hospital readmissions lead to po...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/s10557-018-6798-6
更新日期:2018-12-01 00:00:00
abstract::The DAVIT-II trial has shown that the verapamil type of calcium antagonist can beneficially be used in post-infarct patients. A recent re-analysis suggests that verapamil may also prevent post-infarct sudden death. There are good theoretical reasons to suppose that calcium antagonists should help prevent ventricular f...
journal_title:Cardiovascular drugs and therapy
pub_type: 临床试验,社论,评审
doi:10.1007/BF03029739
更新日期:1991-08-01 00:00:00
abstract::The purpose of this study was to examine the effects of the angiotensin-converting enzyme (ACE) inhibitor cilazapril on the elastic properties of the aorta. A standard diuretic antihypertensive drug, hydrochlorothiazide, served for comparisons. Increased aortic stiffness leads to a reduction of the buffering windkesse...
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/BF00051130
更新日期:1996-03-01 00:00:00
abstract::Understanding and controlling the consequences of myocardial ischemia requires us to acknowledge that we are dealing with a complex, dynamic, and highly variable process. The severity and progression of ischemic injury is not solely determined by the extent of oxygen deprivation, but by many other factors, including t...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/BF00054247
更新日期:1988-05-01 00:00:00
abstract::Chronic renal failure (CRF) patients with a stable course were asked to participate in a follow-up program in which they were randomized into two groups: 1) the placebo group taking their standard antihypertensive therapy without any calcium ion blocker: and 2) the nisoldipine group, those patients taking the calcium ...
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/BF02125735
更新日期:1988-01-01 00:00:00
abstract:BACKGROUND:High health service expenditure on the one hand, and the politically declared objective of stability of statutory contributions and restriction of public funds on the other hand, have been central points of the political and social discussion for several years. The over-proportional increase in health servic...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1023/a:1015323700206
更新日期:2002-01-01 00:00:00
abstract::This study was designed to compare once-daily administration of 5-10 mg amlodipine with two daily doses of 40 mg sustained-release isosorbide dinitrate in 59 patients with stable angina using a randomized, double-blind, crossover study design. Anginal episodes, nitroglycerin consumption, and possible adverse events we...
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:1007726722284
更新日期:1997-11-01 00:00:00
abstract::When choosing antihypertensive agents for the treatment of hypertension, it is necessary to consider the predisposition of individuals to renal damage, which may be associated with the long-term effect of such agents. In this respect, this study examined the effect of two commonly used antihypertensive drugs (Brinerdi...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/BF00879029
更新日期:1995-06-01 00:00:00
abstract:OBJECTIVE:Permanent polymer drug-eluting stents (DES) are associated with a higher risk of late and very late stent thrombosis (ST); biodegradable polymer drug-eluting stents (BP-DES) were designed to reduce these risks. However, their benefits are not completely clear. METHOD:We undertook a meta-analysis of randomize...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,meta分析
doi:10.1007/s10557-014-6528-7
更新日期:2014-08-01 00:00:00
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::Quality of life in heart failure patients is receiving increased attention as a reflection of a treatment's potential secondary benefit of general well-being and daily functioning. The Metoprolol in Dilated Cardiomyopathy (MDC) trial was conducted as a large, multicenter trial to establish the effects of metoprolol on...
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/BF02627961
更新日期:1996-07-01 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::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::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::Patients with mild to moderate hypertension (diastolic blood pressure > or = 95 and < or = 115 mmHg) and renal dysfunction entered one of two studies to assess the safety of efficacious daily doses of quinapril on renal function and blood pressure. Twenty-four patients with moderate renal impairment (MRI) (creatinine ...
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/BF00877336
更新日期:1994-04-01 00:00:00
abstract::Pulmonary arterial hypertension (PAH) is a group of diseases characterized by a progressive increase of pulmonary vascular resistance (PVR), initially due to abnormal pulmonary vasoconstriction in response to endothelial injury. Recent studies have here confirmed the prominent role of endothelin (ET)-1 in vasoconstric...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/s10557-015-6605-6
更新日期:2015-01-01 00:00:00
abstract::In the latter half of the 20th century, among participants of the Framingham Heart Study, incidence of heart failure (HF) has declined by about a third in women but not in men and survival after the onset of HF has improved in both sexes; however, HF remains highly lethal with over 50% dying within 5 years after onset...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/s10557-015-6599-0
更新日期:2015-08-01 00:00:00
abstract::Cardiovascular diseases are of fundamental importance in the cause of death and morbidity in the elderly as a group. If the successful management of blood pressure can effect a reduction in morbid events as well as death, as has been indicated by recent trials, the elderly have more to gain than any other group within...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/BF00114231
更新日期:1991-01-01 00:00:00
abstract:PURPOSE:Single- and multiple-dose studies were conducted to assess the pharmacokinetics, pharmacodynamics and safety of tolvaptan in healthy Japanese subjects. METHODS:All studies were single-center, randomized, placebo-controlled, single-blind or double-blind. In an ascending single-dose study, subjects were given a ...
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/s10557-011-6299-3
更新日期:2011-12-01 00:00:00
abstract::The effects of oral zofenopril pretreatment were investigated in a chronic closed-chest pig model of ischemia and reperfusion. Pigs (25-35 kg) were pretreated orally with zofenopril (15 mg/day) on the 2 days prior to ischemia, which was evoked by the inflation of a catheter balloon in the left anterior descending coro...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章
doi:10.1007/BF01856557
更新日期:1990-06-01 00:00:00
abstract::Specific antiarrhythmic therapy with class I and III drugs for atrial fibrillation (AF) conversion and prevention of its recurrence is frequently utilized in clinical practice. Besides being only moderate effective, the utilization of antiarrhythmic drugs may be associated with serious side effects. In the clinical se...
journal_title:Cardiovascular drugs and therapy
pub_type: 杂志文章,评审
doi:10.1007/s10557-005-5062-z
更新日期:2004-09-01 00:00:00