Abstract：
:The extent to which posture altered the haemodynamic response to slow calcium channel blocker nicardipine was evaluated in 22 male patients with angiographically confirmed coronary artery disease. Patients were randomly allocated to supine or upright posture and an otherwise identical protocol performed in each group. At rest, following a control saline period, four doses of the drug (log cumulative dosage: 1.25, 2.5, 5.0, and 10.0 mg) were administered by i.v. infusion over a total period of 40 min; haemodynamic indices were recorded during the 3-5 min following each 5 min infusion. The exercise effects of the drug, in each posture, were determined by comparison of a control predrug exercise with observations at the same workload following the maximal cumulative dose. Nicardipine reduced resting mean blood pressure (MBP) and systemic vascular resistance index (SVRI) in both postures, the decrease being more pronounced when upright (MBP, -12%, -18%; p less than 0.01: SVRI, -30%, -46%; p less than 0.01). The increases in cardiac index (CI) and stroke volume index (SVI) were higher when upright (29 and 54% vs. 10 and 27%; p less than 0.01). Pulmonary artery occluded pressure (PAOP) increased by 29% when upright, without change when supine. On exercise, the effects for HR, MBP, CI, SI, and SVRI responses were independent of posture; however, a qualitative difference was apparent for PAOP (-17% vs. +14%; p less than 0.05). Thus, although the actions of nicardipine were qualitatively similar, quantitative differences related to posture were confirmed. These differences appeared to relate to posture-related baseline haemodynamic differences between the groups but with similar postnicardipine absolute values.
journal_name
J Cardiovasc Pharmacoljournal_title
Journal of cardiovascular pharmacologyauthors
Silke B,Verma SP,Zezulka AV,Sharma S,Goldhammer E,Jackson N,Taylor SHdoi
10.1097/00005344-199007000-00012subject
Has Abstractpub_date
1990-07-01 00:00:00pages
87-92issue
1eissn
0160-2446issn
1533-4023journal_volume
16pub_type
临床试验,杂志文章,随机对照试验abstract：:The authors studied the involvement of IKr potassium current in ventricular fibrillation during perfusion. Electrophysiologic parameters were measured before and after dofetilide administration (2.5, 7.5, and 12.5 x 10-7 M, n = 8) in isolated perfused feline hearts. During pacing, these parameters included epicardial ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200306000-00003
更新日期：2003-06-01 00:00:00
abstract：:The presence of endothelin (ET) receptors and the nature of the subtype and expression of ET were investigated in the human megakaryoblastic cell line MEG-01. By the RT-PCR procedure, we have shown that both ETA and ETB receptor subtype mRNAs are expressed in the cells. However, binding experiments have shown that the...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：1995-01-01 00:00:00
abstract：:Sotalol is a beta-blocker with class III antiarrhythmic properties that has recently been used in children for the treatment of supraventricular and ventricular arrhythmias. However, little is known about its electrophysiologic effects on the immature heart. Using intracardiac electrocardiographic recordings and stimu...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199201000-00019
更新日期：1992-01-01 00:00:00
abstract：:Selection of the appropriate dose of a new drug for initiation of treatment and then for maintenance is a complicated task. It requires the careful assessment and weighing of benefit vs. risk. A series of studies was carried out with lacidipine to determine the optimal initial dose in a general hypertensive population...
journal_title：Journal of cardiovascular pharmacology
pub_type： 临床试验,杂志文章,随机对照试验,评审
doi：
更新日期：1991-01-01 00:00:00
abstract：:Beta-blocker therapy has been shown to be associated with an increase in the plasma concentration of A-type natriuretic peptide (ANP). Whether the plasma concentration of B-type natriuretic peptide (BNP), which is mainly derived from ventricular tissue, is also increased and whether this increase is caused by increase...
journal_title：Journal of cardiovascular pharmacology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1097/00005344-200310000-00002
更新日期：2003-10-01 00:00:00
abstract：:Acute ischemic left ventricular failure was induced in dogs by coronary embolization with plastic microspheres, resulting in reduced cardiac output (CO), increased left ventricular end-diastolic pressure (LVEDP), pulmonary capillary pressure (PCP), and total peripheral resistance (TPR). Intravenous (i.v.) administrati...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-198907000-00018
更新日期：1989-07-01 00:00:00
abstract：:The hypothesis that local release of prostanoids may contribute to the pharmacologic effect of nitroglycerin (NTG) has long been debated. Results of prostanoid blockade by indomethacin on NTG-induced effects, to date, have been inconclusive. To quantitate the effects of intravenous indomethacin on NTG-induced myocardi...
journal_title：Journal of cardiovascular pharmacology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1097/00005344-199712000-00005
更新日期：1997-12-01 00:00:00
abstract：:The combination of a beta-adrenoceptor-blocking drug with the dihydropyridine calcium channel antagonist, nitrendipine, has particular therapeutic advantages in the management of hypertension. The beta-blocker reduces any reflex increases in sympathetic nervous system and renin-angiotensin system activity that result ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：10.1097/00005344-198806124-00015
更新日期：1988-01-01 00:00:00
abstract：:Dihydropyridine calcium antagonists play an important role in the treatment of arterial hypertension. In many centers, they are used as first-line treatment. Since impaired renal function can be a complication of long-standing blood pressure elevation, the usefulness of dihydropyridine calcium antagonists in hypertens...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：
更新日期：1989-01-01 00:00:00
abstract：:Abdominal aortic aneurysms (AAA) is a multifactorial vascular disease with a high rate of mortality and brings heavy burden to both human and society. The pathological process behind AAA is complex. Elastin degradation, chronic inflammation, and vascular smooth muscle cell phenotypic modulation are involved in AAA for...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/FJC.0000000000000785
更新日期：2020-03-01 00:00:00
abstract：:Intracellular [Ca2+]i overloading in cardiomyocytes is a fundamental pathogenic event associated with chronic aldosterone/salt treatment (ALDOST) and accounts for an induction of oxidative stress that leads to necrotic cell death and consequent myocardial scarring. This prooxidant response to Ca2+ overloading in cardi...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/FJC.0b013e3181cf0090
更新日期：2010-03-01 00:00:00
abstract：OBJECTIVES:To identify and quantify the stimulatory and inhibitory activity of endothelial factors on Arginine vasopressin (AVP)-induced contractions. METHODS:In a standard organ bath set-up for isometric force recording, rabbit isolated renal artery rings were exposed to cumulative concentrations of AVP. Experiments ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200312000-00002
更新日期：2003-12-01 00:00:00
abstract：:ATP utilization (delta approximately P) during an isometric contraction has been studied in terms of both measurements of oxygen consumption and lactate production as well as of the tissue nucleotide and metabolite levels. The contribution of breakdown of preformed ATP and phosphocreatine (PCr) pools to delta approxim...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：10.1097/00005344-198406002-00006
更新日期：1984-01-01 00:00:00
abstract：:The target proteins for calcium, when it acts as a second messenger, are a group of intracellular, specific calcium-binding proteins that contain EF-hand structures. Calmodulin regulates a number of Ca2+-dependent processes and is present in all eukaryotic cells. Parvalbumin, the S-100 proteins, two vitamin D-dependen...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：
更新日期：1986-01-01 00:00:00
abstract：AIMS:To determine whether short-term treatment with trimetazidine (TMZ), an antiischemic agent that directly inhibits fatty acid oxidation and results in stimulation of glucose oxidation, may improve myocardial perfusion and left ventricular systolic function in diabetic patients with ischemic cardiomyopathy. METHODS ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,随机对照试验
doi：10.1097/FJC.0b013e31817bdd66
更新日期：2008-06-01 00:00:00
abstract：:Human saphenous veins were obtained at operation and assayed immediately (n = 10). The veins were cut into rings, suspended in organ chambers, and connected to force transducers for recording of isometric tension. One ring served as control; others were treated with either the alpha 1-adrenoceptor antagonist prazosin ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：1994-03-01 00:00:00
abstract：:The actions of SK&F 94120, a selective phosphodiesterase (PDE III) inhibitor, have been characterised on human ventricular myocardium obtained from heart failure patients. Some actions have been compared directly with those of the drug on guinea pig and cat ventricular myocardium. SK&F 94120 caused positive inotropic ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-198706000-00013
更新日期：1987-06-01 00:00:00
abstract：:Vascular smooth muscle cells (SMCs) play a key role in the development of atherosclerotic lesions. Vascular smooth muscle, however, does not represent a homogeneous tissue. Using myosin as a marker of the differentiation processes in development and in vascular disease, we have been able to demonstrate the existence o...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：10.1097/00005344-199219002-00004
更新日期：1992-01-01 00:00:00
abstract：:To assess flecainide's ability to suppress ventricular fibrillation during reperfusion, we compared flecainide acetate (2 mg/kg i.v.) with saline placebo in 50 pentobarbital-anesthetized dogs undergoing proximal anterior descending coronary artery occlusion for 20 min followed by sudden release. Treatment selection wa...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：1989-04-01 00:00:00
abstract：:Before the withdrawal of 2 COX-2 selective agents (COX-2s) from the market, many rheumatoid arthritis patients were using these products regularly, with disease-modifying antirheumatic agents. Clinical trials have shown benefit of COX-2s equivalent to nonselective nonsteroidal anti-inflammatory drugs (NS-NSAIDs) in rh...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200605001-00010
更新日期：2006-01-01 00:00:00
abstract：:At present, endothelin (ET) receptor classification remains controversial. We investigated the presence of atypical ETA receptors in human saphenous veins (SV). Human SV was obtained from 24 patients undergoing coronary artery bypass grafting. Vessels were set up in organ baths, stretched to a tension of 6 g, and left...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199800001-00049
更新日期：1998-01-01 00:00:00
abstract：:The binding of [3H]ketanserin and [125I]BE 2254 [( beta-(4-hydroxyphenyl)ethylaminomethyl]tetralone) was characterized in human brain cortex membranes. As observed in saturation experiments, [3H]ketanserin (a reportedly selective serotonin 5-HT2 ligand) and [125I]BE 2254 (a selective alpha 1-adrenergic antagonists) la...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：1987-01-01 00:00:00
abstract：:Amlodipine, a new long-acting dihydropyridine calcium antagonist, was compared with hydrochlorothiazie (HCTZ) in 145 patients with mild to moderate hypertension. After 4 weeks of single-blind placebo runin, patients were randomly allocated to receive amlodipine (2.5-10 mg once daily, n = 97) or HCTZ (25-100 mg once da...
journal_title：Journal of cardiovascular pharmacology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1097/00005344-198812007-00022
更新日期：1988-01-01 00:00:00
abstract：:Development of tolerance to nicorandil (NCR), N-(2-hydroxyethyl)nicotinamide nitrate (ester), was compared with that to nitroglycerin (NTG) or isosorbide dinitrate (ISDN) in dogs. An intracoronary arterial (i.a.) injection of NCR (20 micrograms), ISDN (30 micrograms), or NTG (1 microgram) caused coronary vasodilation....
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：1987-01-01 00:00:00
abstract：:Activation of adrenoceptors of the alpha 2-subtype can cause an inhibitory or an excitatory response, depending on the cellular system affected. At the plasma membrane, where the extracellular signal is transduced via the alpha 2-adrenoceptor into an intracellular signal, only one transduction process has clearly been...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-198500076-00018
更新日期：1985-01-01 00:00:00
abstract：:Gamma-hydroxybutyrate (GHB) is generally thought to be a central nervous system depressant; however, GHB also has sympathomimetic cardiovascular actions. Radio telemetry was used to record the cardiovascular responses elicited by GHB (180-1000 mg/kg IV) in conscious rats. GHB elicited increases in mean arterial pressu...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200412000-00002
更新日期：2004-12-01 00:00:00
abstract：:The effects of the thromboxane A2 (TXA2)/prostaglandin endoperoxide (TP) receptor antagonist ifetroban (BMS-180291) on infarct size (IS) resulting from coronary occlusion/reperfusion was determined in anesthetized dogs and ferrets. In dogs, ifetroban (1 + 1 mg/kg/h, intravenously, i.v.) or vehicle administration was i...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199424060-00014
更新日期：1994-12-01 00:00:00
abstract：:The dihydropyridine calcium antagonist nitrendipine offers a pathophysiologically based antihypertensive treatment with a potent dilation of resistance vessels, increased arterial compliance, and an acute natriuretic/diuretic response. Prolonged nitrendipine treatment in essential hypertension is not associated with s...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：10.1097/00005344-198806124-00004
更新日期：1988-01-01 00:00:00
abstract：:The signaling impact of a human beta1-adrenergic receptor (beta1 AR) polymorphism at residue 49 of the aminoterminus (Ser-to-Gly substitution) was studied by recombinantly expressing each receptor. The two receptors displayed identical agonist and antagonist binding affinities. Furthermore, basal and agonist-stimulate...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200202000-00001
更新日期：2002-02-01 00:00:00
abstract：:Arterial hypertension complicating acute myocardial infarction (AMI) may aggravate myocardial damage, possibly through an increase in myocardial oxygen demand. This study reports the effects of clonidine in patients with hypertension complicating acute myocardial infarction. Forty patients (37 men and three women, ave...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-198608003-00008
更新日期：1986-01-01 00:00:00
