Abstract：
:To explore endothelium-dependent relaxation and the L-arginine (L-ARG)-nitric oxide (NO) pathway during chronic hypoxia, we examined isolated rings from large conduit pulmonary arteries and aorta from rats exposed to either room air (N), 3-week hypoxia (H), or 3-week H followed by 72-h recovery to normoxia (room air). We examined the vasodilatory actions of acetylcholine (ACh), ionophore A23187, and endothelin-3 (ET-3) on extrapulmonary left and right branches of pulmonary arteries and thoracic aorta precontracted by phenylephrine (PE 10(-6) M). Endothelium-dependent relaxation of N rat pulmonary arteries and aorta to ACh and A23187 was abolished in the presence of L-NG nitroarginine methyl ester (L-NAME 10(-4) M) or methylene blue (MB 10(-5) M) but was suppressed only partially by NG-monomethyl-L-arginine (L-NMMA 5 x 10(-4) M). In pulmonary arteries but not in aorta, ET-3 induced endothelium-dependent relaxation that was suppressed by L-NAME, MB, and L-NMMA. Pulmonary arteries from H rats did not relax with ET-3. As compared with those of N rats, they exhibited less relaxation to ACh and A23187, (47 +/- 3 vs. 89 +/- 2 and 53 +/- 2 vs. 85 +/- 4%, p < 0.001, respectively) but exhibited similar relaxation to the nonendothelium-dependent vasodilator linsidomine. In contrast, endothelial-relaxation did not differ between N and H rat aorta.2+ pretreatment with L-ARG.
journal_name
J Cardiovasc Pharmacoljournal_title
Journal of cardiovascular pharmacologyauthors
Carville C,Raffestin B,Eddahibi S,Blouquit Y,Adnot Sdoi
10.1097/00005344-199312000-00018subject
Has Abstractpub_date
1993-12-01 00:00:00pages
889-96issue
6eissn
0160-2446issn
1533-4023journal_volume
22pub_type
杂志文章abstract：:Nebivolol, a chemically novel beta 1-adrenoceptor antagonist, acutely lowers blood pressure in spontaneously hypertensive rats, anaesthetised normotensive dogs, and hypertensive patients. We have investigated the actions of dl-nebivolol in five conscious normotensive rabbits (sham, mean blood pressure (BP) of 82.2 +/-...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：1992-07-01 00:00:00
abstract：:To evaluate a possible mechanism for the chronic regulation of MAPK/ERK kinase-1 (MEK-1) and p42 mitogen-activated protein kinase (MAPK) we studied the long-term effects of the G-protein-coupled receptor agonist endothelin-1 (ET-1) and the protein tyrosine kinase-coupled receptor agonist platelet-derived growth factor...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：1995-01-01 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：:The prevention of coronary disease in hypertensive patients will see progress in the years to come. It is clearly too much, however, to expect this progress to come exclusively from the application of new therapies, as the incidence of coronary disease in hypertensive patients depends on several factors, which are, es...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：
更新日期：1990-01-01 00:00:00
abstract：:The formation of bone occurs via a series of events that are regulated by various hormones and cytokines. We previously reported that endothelin (ET) inhibits the mineralization by osteoblastic cells and natriuretic peptide (NP) promotes osteoblastic differentiation. Therefore, we attempted to identify the genes induc...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200036051-00084
更新日期：2000-11-01 00:00:00
abstract：:We wished to determine if the previously observed cardioprotective effects of monophosphoryl lipid A (MLA, 65 micrograms/kg intravenously, i.v.), an endotoxin derivative, were time related and mediated by an enhancement of antioxidant defense mechanisms, i.e., myocardial catalase and superoxide dismutase (SOD) activit...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199310000-00021
更新日期：1993-10-01 00:00:00
abstract：:The purpose of this study was to examine whether tetrahydrobiopterin (BH4), one of the cofactors of nitric oxide (NO) synthase, attenuates endothelial cell death induced by 3-morpholinosydnonimine-N-ethylcarbamide (SIN-1), which is known to produce both superoxide and NO. Endothelial cell death was assessed by the rel...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199902000-00018
更新日期：1999-02-01 00:00:00
abstract：:The benefit of thrombolytic agents to reduce myocardial infarct size, improve left ventricular (LV) function, and prolong survival in human subjects is generally recognized, although the precise mechanism is poorly defined. This study was designed to evaluate the cardioprotective effects of streptokinase (SK) in rats,...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199111000-00011
更新日期：1991-11-01 00:00:00
abstract：:Calcium is a signaling element of general importance to cells. In muscle, its key function is the activation of troponin C, which is essential for the contraction of myofibrils in skeletal and heart muscles, and of myosin light chain kinase, which is essential for the contraction of smooth muscles. Calcium modulates t...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：
更新日期：1988-01-01 00:00:00
abstract：:The new anti-anginal drug ranolazine causes a slight (<10 milliseconds) prolongation of the QT interval, raising the concern that its use may be associated with an increased incidence of torsades de pointes ventricular tachyarrhythmias. The goal of this study was to show that ranolazine inhibits the late component of ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200408000-00008
更新日期：2004-08-01 00:00:00
abstract：:Several studies suggested that dopamine may be one of the inhibitory modulators of aldosterone secretion. Metoclopramide, a selective antagonist for dopamine D-2 receptors, increases both basal plasma aldosterone levels and the aldosterone response to angiotensin II (Ang II) in rats and humans kept on a high sodium in...
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：:In this study we compared the antithrombotic and anticoagulant properties of sodium and calcium derivatives of pentosan polysulfate (Na-PPS, Ca-PPS), unfractionated heparin (UFH), and low-molecular-weight heparin (Fraxiparin). The antithrombotic effects of these agents have been investigated in an experimental thrombo...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199909000-00004
更新日期：1999-09-01 00:00:00
abstract：:Isoprostanes are a family of prostaglandin-related compounds formed from arachidonic acid in a cyclooxygenase-independent manner as products of free radical-initiated lipid peroxidation. To elucidate the biological activity of the F2-and E2-isoprostanes, 8-iso-prostaglandin F2alpha (8-iso-PGF2alpha) and 8-iso-prostagl...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199706000-00012
更新日期：1997-06-01 00:00:00
abstract：:Stroke is a major clinical problem in hypertension. Cerebral hemorrhage has become considerably less frequent since treatment of hypertension has become more widely used. Antihypertensive treatment has also reduced the incidence of lacunar stroke, which is a result of hypertensive vascular disease of small arteries. C...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：
更新日期：1990-01-01 00:00:00
abstract：:We investigated the effects of an angiotensin-converting enzyme inhibitor (temocapril) and an angiotensin II type 1 receptor blocker (olmesartan) on changes in myocardial sympathetic nervous activity, fatty acid metabolism and myocardial blood flow using 131I-meta-iodobenzylguanidine, 125I-beta-methyl-iodophenyl penta...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
abstract：:Isatin (1H-indole-2,3 dione) is an endogenous compound with biological activities. Many of its derivatives have pharmacological effects, including inhibition of cyclic guanosine monophosphate levels in cardiac tissue; sedative-hypnotic profiles; anticonvulsant, analgesic, antithermic, and anti-inflammatory activities;...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/FJC.0b013e3181fd341c
更新日期：2011-01-01 00:00:00
abstract：:Compound LY249933 and its component diastereomers, (RR) and (SR), were studied for their vascular and cardiac effects in vitro and in vivo. In guinea pig cardiac ventricular membranes, LY249933, (RR), and (SR) potently displaced bound [3H]nitrendipine (Kd values = 2-6 nM). In isolated guinea pig right ventricular stri...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：1989-09-01 00:00:00
abstract：:During myocardial ischemia, the extracellular potassium concentration increases in a triphasic pattern, an initial early increase, a constant phase, and a late increasing phase. The aim of this study was to determine whether diltiazem inhibits the late increasing phase by maintaining glycolytic adenosine triphosphate ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199710000-00004
更新日期：1997-10-01 00:00:00
abstract：:We previously reported that i.v. DAMGO (Tyr-D-Ala-Gly-NMePhe-Gly-ol), a selective mu-opioid agonist, causes an increase in blood pressure with no change in heart rate in unanesthetized sheep and subsequently demonstrated that DAMGO attenuates baroreflex-mediated bradycardia. To determine the site and mechanism by whic...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200002000-00014
更新日期：2000-02-01 00:00:00
abstract：:The cardiovascular effects of catecholamines and related substances after local application into the nucleus tractus solitarii (NTS) of the medulla oblongata of urethane anesthetized rats are summarized. The catecholamines in the nanomolar dose range appear to activate stereospecifically receptor sites in the NTS, res...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-198200041-00016
更新日期：1982-01-01 00:00:00
abstract：:PPARgamma agonists ameliorate insulin resistance and lower blood pressure. Volume expansion/edema has been observed in susceptible patients treated with these agents. Alterations of renal hemodynamics affect renal tubular reabsorption, and thus may contribute to volume expansion. This study seeks to determine whether ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200309000-00016
更新日期：2003-09-01 00:00:00
abstract：:Prostaglandin E1 (PGE1) has been reported to be a coronary vasodilator and has been considered clinically in the treatment of coronary vasospasm, but its mechanism of action is not known. To evaluate the vasomotor effect of PGE1, epicardial coronary and distal resistance vessel responses were compared by PGE1 and nitr...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-198908000-00012
更新日期：1989-08-01 00:00:00
abstract：:Oxidative stress is believed to play a role in diabetes-induced vascular complications. In this study, we tested whether chronic treatment with a known hydroxyl radical scavenger, dimethylthiourea (DMTU), could prevent endothelial dysfunction in diabetes. Lewis strain rats were made diabetic by an intravenous injectio...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199612000-00002
更新日期：1996-12-01 00:00:00
abstract：:In an initial double-blind randomized study with three parallel groups, 48 patients, mean age 49.6 years (32-65 years), with hypertension WHO I-II, were given bisoprolol in doses of 5, 10, and 20 mg. Bisoprolol is a new beta 1-selective beta-blocking agent with a plasma half-life of 10-12 h and without intrinsic sympa...
journal_title：Journal of cardiovascular pharmacology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1097/00005344-198511001-00020
更新日期：1986-01-01 00:00:00
abstract：:The aim of this study was to examine the electrophysiological effects of isoprenaline, phenylephrine, and noradrenaline on sheep Purkinje fibers in vitro, superfused either with a normal or with a modified physiological salt solution (PSS) designed to mimic some of the conditions occurring during mild myocardial ische...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-198902000-00018
更新日期：1989-02-01 00:00:00
abstract：ABSTRACT:Establishing efficient perfusion into the myocardium is the main purpose in patients with acute coronary syndrome, but the process of reperfusion is not without risk and can damage the myocardium paradoxically. Unfortunately, there is no effective treatment for reperfusion injury, and efforts to find an effici...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/FJC.0000000000000980
更新日期：2021-01-04 00:00:00
abstract：:Inhibition of plasma angiotensin II generation does not fully explain the chronic hypotensive effects of angiotensin-converting enzyme (ACE) inhibitors. Therefore, the pattern of tissue ACE inhibition in rats was studied after oral administration of perindopril, a new ACE inhibitor. Tissue ACE was measured by quantita...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-198812000-00013
更新日期：1988-12-01 00:00:00
abstract：:The study objective was to characterize the electrophysiologic interactions of procainamide (PA) and its metabolite, N-acetylprocainamide (NAPA), in canine Purkinje fibers. Cell (N = 43) action potentials were measured in Tyrode's solution (K+ = 4.0 mM, 36 degrees C) at a basic cycle length of 1,000 ms using standard ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199208000-00004
更新日期：1992-08-01 00:00:00
abstract：:We studied the effects of cicletanine, an anti-hypertensive drug, on reperfusion arrhythmias in relation to 6-keto-PGF1 alpha, thromboxane B2 (TXB2), and ion shifts (Na+, K+, Ca2+, and Mg2+) induced by ischemia and reperfusion in hearts isolated from spontaneously hypertensive rats. Hearts were subjected to 30-min glo...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：1991-04-01 00:00:00
abstract：:Experiments were carried out on isolated canine right atria to investigate the effects of N-(2-hydroxyethyl)nicotinamide nitrate (nicorandil, SG-75) and its interaction with beta-adrenoceptor stimulation on the cyclic nucleotide levels accompanying inotropic changes. The results were compared with those during muscari...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-198309000-00027
更新日期：1983-09-01 00:00:00
