Abstract:
:Low doses of ethanol can produce negative functional effects in ventricular myocytes. This may be related to the nitric oxide-cyclic GMP signal transduction system. We tested the hypothesis that ethanol stimulated endothelial nitric oxide synthase and this caused the negative functional effects in cardiac myocytes. This hypothesis was tested in ventricular myocytes isolated from endothelial nitric oxide synthase-knockout (eNOS-/-) and wild-type (WT) control mice. Cell function was determined with a video edge detector at 37 degrees C. Myocytes were administered 5 or 10 mM ethanol alone or after 10(-6) M L-nitro-arginine-methyl ester (L-NAME, nitric oxide synthase inhibitor) or 10(-6) M 1H[1,2,4]oxadiazolo[4,3-alpha]quinoxalin-1-one (ODQ, soluble guanylyl cyclase inhibitor). There were no differences in basal perecentage shortening (2.6+/-0.2% WT versus 2.4+/-0.2% eNOS) or maximal rate of shortening (44+/-6 WT versus 47+/-6 microms eNOS) between groups. In the WT mice, 10 mM ethanol significantly decreased percentage shortening (1.8+/-0.1) and maximal rate of shortening (35+/-4). These effects were blocked by L-NAME and ODQ. In the eNOS-/- mice, these values were not affected by ethanol. Similar data were seen for both maximal rate of shortening and relaxation. These data provide both pharmacological and direct genetic proof that these low doses of ethanol act as a stimulator of endothelial nitric oxide synthase, and this leads to the negative functional effects in ventricular myocytes.
journal_name
J Cardiovasc Pharmacoljournal_title
Journal of cardiovascular pharmacologyauthors
Zhang S,Grover GJ,Stokes H,Scholz PM,Weiss HRdoi
10.1097/01.fjc.0000175436.49165.8bsubject
Has Abstractpub_date
2005-09-01 00:00:00pages
343-7issue
3eissn
0160-2446issn
1533-4023pii
00005344-200509000-00015journal_volume
46pub_type
杂志文章abstract::Angiotensin-converting enzyme (ACE) is a widely distributed dipeptidyl carboxydipeptidase. Using computer analysis of the binding of radiolabeled ACE inhibitors, we have mapped the distribution of ACE in normal animals and in models of disease, and have studied the tissue effects of ACE inhibitors. In the myocardium, ...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:
更新日期:1991-01-01 00:00:00
abstract::Histamine released within walls of resistance blood vessels is suggested to mediate an active portion of baroreceptor-mediated neurogenic vasodilatation in skeletal muscle vasculature. Studies were undertaken to examine the possibility that histamine-mediated active vasodilatation could be effected, in part, by an inh...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198706000-00003
更新日期:1987-06-01 00:00:00
abstract::There are several first choices for mild and moderate hypertension. The selection of a drug may of course be influenced by concomitant pathology, with positive indications for particular drugs: for coexistent angina, a beta-receptor blocking drug or a calcium antagonist; for fluid retention, a diuretic; or for contrai...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:
更新日期:1987-01-01 00:00:00
abstract:OBJECTIVE:This study was designed to assess whether angiotensin-converting enzyme inhibitors (ACEIs) and angiotensin receptor blockers (ARBs) could prevent the recurrence of atrial fibrillation (AF). METHODS:A systemic literature search of PubMed, EMBASE, and Cochrane Controlled Trials Register till 2012 was performed...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,meta分析,评审
doi:10.1097/FJC.0b013e3182a094a1
更新日期:2013-10-01 00:00:00
abstract:BACKGROUND:The goal of this study was to determine whether an Angiotensin II receptor antagonist, candesartan, prevents myocardial fibrosis more effectively than enalapril in animals with a non-ACE pathway during the progression of congestive heart failure (CHF). METHODS AND RESULTS:Dogs were randomly assigned to one ...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-200406000-00016
更新日期:2004-06-01 00:00:00
abstract::Statins are known to have cholesterol-independent pleiotropic effects, such as upregulation of the enzyme ecto-5'-nucleotidase. These effects may contribute to the protective effect of statins against ischemia and reperfusion (IR). Interestingly, pleiotropic effects have been shown to differ between hydrophilic and li...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1097/FJC.0b013e318232b1a4
更新日期:2012-01-01 00:00:00
abstract::The effects of various doses of intravenously (i.v.) infused (5-min duration, 0.1-3.2 nmol/kg/min) or bolus-injected (0.1-3.2 nmol/kg) porcine and/or rat/human neuropeptide Y (NPY) on mean arterial pressure (MAP), heart rate (HR), and plasma concentrations of porcine NPY-like immunoreactivity (pNPYir) were examined in...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199111000-00001
更新日期:1991-11-01 00:00:00
abstract::Cardiovascular function is regulated by short-term and long-term neurohormonal and autocrine-paracrine mechanisms that act synergistically or sequentially. Structural adaptive changes that occur progressively over time also contribute to the long-term outcome. The renin-angiotensin system (RAS) can operate as both an ...
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::The primary purpose of the arterial baroreflex is to keep blood pressure close to a particular set point over a relatively short period of time. The rapid resetting of arterial baroreceptor afferents toward any sustained new level of blood pressure ensures that the reflex acts as an effective buffer of short-term bloo...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:
更新日期:1995-01-01 00:00:00
abstract::With increasing age, cardiac beta-adrenoceptor function decreases. To study possible mechanisms underlying this process, we assessed in right atrial appendages from 52 patients of different ages (group A, < 20 years, mean age 3.7 +/- 1.0 years, n = 20; group B, 20-50 years, mean age, 37.9 +/- 2.3 years, n = 9; group C...
journal_title:Journal of cardiovascular pharmacology
pub_type: 临床试验,杂志文章
doi:10.1097/00005344-199507000-00004
更新日期:1995-07-01 00:00:00
abstract::The main therapeutic strategies for treating atrial fibrillation include rate control, maintenance of sinus rhythm, and antiembolic treatment. Current antiarrhythmic drugs are effective in about 50% of patients and are often associated with adverse effects. Multiple trials suggest that rate control with proper anticoa...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:10.1097/FJC.0b013e318175dd73
更新日期:2008-09-01 00:00:00
abstract:BACKGROUND:Myeloid differentiation factor 88 (MyD88) is an endogenous adaptor protein that coordinates the inflammatory response to agonists of the Toll-like receptor and interleukin-1 receptor families. This particular response is activated following myocardial ischemia and infarction and may represent a viable target...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/FJC.0b013e3181d3da24
更新日期:2010-04-01 00:00:00
abstract::The effects of purified baicalin and baicalein from the traditional Chinese herb, Huangqin, on contractions induced by phenylephrine, U46619, and high extracellular K+ were investigated in isolated rat mesenteric arteries. Both baicalin (1-100 microM) and baicalein (1-50 microM) potentiated the contractile response to...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-200008000-00018
更新日期:2000-08-01 00:00:00
abstract::Trimetazidine has no hemodynamic/antithrombotic actions. Hence, its anti-ischemic properties have been mostly attributed to its metabolic effects. However, this issue is not completely elucidated. We investigated whether inhibition of neutrophil activation may also contribute to its cardioprotective action. We first s...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/01.fjc.0000164091.81198.a3
更新日期:2005-07-01 00:00:00
abstract::Several mechanisms of action for Ca2+ antagonists are possible at the vascular muscle cell membrane and at subsequent steps. In rat caudal artery, nitrendipine hyperpolarizes the resting vascular muscle cell, an action different from that of verapamil. Hyperpolarization might be expected to explain the relaxant action...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:
更新日期:1984-01-01 00:00:00
abstract::The effect of canrenone, an antialdosterone and partial ouabain-agonist drug, was studied in rats that developed volume expansion and hypertension after renal mass reduction and excess Na+ intake (RRM-salt). The RRM-salt was characterized by: (1) increased endogenous "digitalis-like" compounds in plasma [cross reactiv...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198801000-00012
更新日期:1988-01-01 00:00:00
abstract::The aim of this study was to determine whether tumor necrosis factor (TNF)-alpha would impair basal and stimulated endothelium-dependent vasomotion in human resistance vessel. Changes in baseline and acetylcholine (ACh)-induced forearm vascular resistance (FVR) were measured plethysmographically before and after a low...
journal_title:Journal of cardiovascular pharmacology
pub_type: 临床试验,杂志文章
doi:10.1097/00005344-200010000-00011
更新日期:2000-10-01 00:00:00
abstract::Late sodium channel current (late INa) is considered to be an antiarrhythmic target. The prime antiarrhythmic mechanisms of late INa inhibition have been suggested to be (1) suppression of intracellular calcium [Cai]-mediated rhythmic activity (through reduction in Cai secondary to the decrease in intracellular sodium...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:10.1097/FJC.0000000000000510
更新日期:2017-09-01 00:00:00
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journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199106000-00014
更新日期:1991-06-01 00:00:00
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journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199004000-00012
更新日期:1990-04-01 00:00:00
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journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199405000-00002
更新日期:1994-05-01 00:00:00
abstract::Qian Yang He Ji (QYHJ) is a traditional Chinese medicine composed of Digitalis purpurea, Uncaria gambir, Fructus tribuli terrestris, and Ligustrum lucidum. Here, we explored whether combining an antihypertensive angiotensin II receptor blocker (ARB) therapy with QYHJ can improve the arterial functionality of hypertens...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1097/FJC.0b013e31827afddf
更新日期:2013-05-01 00:00:00
abstract::We studied the inotropic and possible antioxidant effects of levosimendan in human atrial strips, before and after induction of oxidative stress induced by H2O2. Levosimendan (10(-9) to 10(-6) M) increased contractions induced by electrical stimulation (ES) in human atrial strips. The maximal positive inotropic effect...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/FJC.0b013e318123fbf9
更新日期:2007-10-01 00:00:00
abstract::There is increasing interest in initial therapy of hypertension with sympatholytic agents and the influence of antihypertensive therapy on cardiac and renal function. We treated 26 men with essential hypertension with either guanabenz alone (n = 14) or propranolol alone (n = 12) and assessed blood pressure and renal p...
journal_title:Journal of cardiovascular pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1984-01-01 00:00:00
abstract::Cardiac hypertrophy causes heart failure and is associated with hyperglycemia in patients with diabetes mellitus. Mibefradil, which acts as a T-type calcium channel blocker, exerts beneficial effects in patients with heart failure. In this study, we explored the effects and mechanism of mibefradil on high-glucose-indu...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/FJC.0000000000000844
更新日期:2020-08-01 00:00:00
abstract::The study was designed to assess the antihypertensive effect of combined angiotensin-converting enzyme (ACE) inhibition and angiotensin II type 1 receptor (AT1) antagonism in patients with essential hypertension. Twenty patients with uncontrolled ambulatory diastolic blood pressure (BP) after 6 weeks of ACE inhibitor ...
journal_title:Journal of cardiovascular pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00005344-200006000-00017
更新日期:2000-06-01 00:00:00
abstract::The maximal increases in heart rate produced by intravenous xamoterol in anaesthetized cats and rats are less than that of (-)-isoprenaline. In cats, blood pressure was slightly raised, while in rats, supramaximal cardiac-stimulant doses produced reductions in blood pressure. In anaesthetized guinea pigs, cardiac-stim...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198603000-00014
更新日期:1986-03-01 00:00:00
abstract::Studies were undertaken to ascertain whether metoprolol, a beta 1-selective adrenergic blocking agent, could offer a limitation of myocardial injury throughout a 24-h period of coronary embolization in the dog. Regional myocardial ischaemia was induced through the use of a bead embolization technique which did not req...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:
更新日期:1984-11-01 00:00:00
abstract::Loop diuretics could adversely influence prognosis due to activation of neurohumoral mechanism in the long term. Previous study showed torasemide, a loop diuretic with anti-aldosteronergic properties, was associated with lower mortality in patients with chronic heart failure (CHF). We evaluated the effects of torasemi...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1097/FJC.0b013e3181a717f7
更新日期:2009-06-01 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