Abstract：
:Protein kinase C (PKC) isoforms improve endothelial nitric oxide synthase activity and contractile Ca sensitivity in blood vessels. These actions may have opposite effects on propofol-induced vasodilation. This study examines the hypothesis that propofol induces relaxation by enhancing the PKC-mediated nitric oxide synthesis in endothelium and/or inhibiting the PKC-regulated Ca sensitivity in vascular smooth muscle (VSM). Propofol (1-100 μM) induced greater relaxation in endothelium-intact rings compared with denuded rings, and this effect was antagonized by the nitric oxide synthase inhibitor NG-nitro-L-arginine methyl ester (L-NAME). In contrast, treatment with the general PKC inhibitor GF-109203X augmented both the endothelium-dependent and endothelium-independent relaxation induced by propofol, and this enhancement was more profound in the intact rings at lower propofol concentrations. The enhancement was unaffected by L-NAME. Interestingly, calphostin C (an inhibitor of conventional and novel PKCs) and Gö-6976 (an inhibitor of conventional PKCs) had similar effects in augmenting propofol-induced relaxation in endothelium-denuded rings. Downregulation of novel isoforms not only reduced the norepinephrine-elicited contraction but also decreased the magnitude of propofol-induced relaxation. In vascular smooth muscle cells, propofol prevented norepinephrine-elicited phosphorylation of myosin light chain. Propofol can increase the PKC-mediated availability of nitric oxide but inhibit the novel PKC-regulated Ca-sensitization, which provides a novel explanation for the mechanism of propofol-induced vasodilation.
journal_name
J Cardiovasc Pharmacoljournal_title
Journal of cardiovascular pharmacologyauthors
Wang Y,Zhou H,Wu B,Zhou Q,Cui D,Wang Ldoi
10.1097/FJC.0000000000000275subject
Has Abstractpub_date
2015-09-01 00:00:00pages
276-84issue
3eissn
0160-2446issn
1533-4023journal_volume
66pub_type
杂志文章abstract：:In this report, alterations between the electrical and mechanical responses of isolated neonatal and adult canine ventricular muscle preparations before and after ouabain exposure are described. No significant differences were observed between the two age groups in the concentration-dependent effects of ouabain on inc...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-198911000-00002
更新日期：1989-11-01 00:00:00
abstract：:[3H]lacidipine binding to its receptor was characterized to explain its slow onset and long duration of antihypertensive activity. Binding parameters were studied in guinea pig myocardial and cerebral membrane preparations and compared with another dihydropyridine (DHP) calcium antagonist, isradipine. Lacidipine binds...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199602000-00017
更新日期：1996-02-01 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：:The present article reviews the experience with amiodarone therapy in life-threatening ventricular tachyarrhythmias. In 13 studies, 1,594 patients were treated with amiodarone in average doses of 300 mg/day. The mean annual death rate was 6.2%; the annual withdrawal rate averaged 8%. Risk factors for arrhythmia recurr...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：
更新日期：1992-01-01 00:00:00
abstract：:Celiprolol is a selective beta(1)-adrenoceptor antagonist with antihypertensive actions, which causes renal vasodilation by increasing tissue nitric oxide (NO) levels. The authors tested whether celiprolol increases coronary blood flow (CBF) by increasing cardiac NO release in the ischemic heart in vivo. In open-chest...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200304000-00001
更新日期：2003-04-01 00:00:00
abstract：:The sensitivity of smooth muscle from aortas of spontaneously hypertensive rats (SHR), renal hypertensive rats: two kidney-one clip and one kidney-one clip (2K-1C, 1K-1C) and DOCA salt hypertensive rats to the relaxant effect of nifedipine (NIF) was studied. A parallel leftward shift of the concentration-relaxation cu...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-198609000-00005
更新日期：1986-09-01 00:00:00
abstract：:Vasoconstrictor actions of endothelin-1 (ET) were compared between endothelium-removed strips of cerebral (basilar, posterior cerebral, and middle cerebral) and peripheral (coronary and mesenteric) arteries of the dog. ET produced a concentration-dependent contraction in these arteries. A threshold concentration and E...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199204000-00014
更新日期：1992-04-01 00:00:00
abstract：:Activation of polymorphonuclear neutrophils (PMNs) during cardiopulmonary bypass (CPB) is a wellknown phenomenon. This study aimed to determine if activated PMNs are sequestered and degranulated within the myocardium at reperfusion in patients undergoing coronary artery bypass grafting (CABG). Nineteen patients underg...
journal_title：Journal of cardiovascular pharmacology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1097/00005344-199500252-00026
更新日期：1995-01-01 00:00:00
abstract：:We investigated the effects of a newly synthesized dihydropyridine (DHP) derivative (NZ-105) on intracellular Ca transients and contraction in ferret ventricular muscles, using the aequorin method. Low concentrations of NZ-105 (10(-9)-10(-7) M) showed no significant effects on the light signal of aequorin and tension ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：1994-08-01 00:00:00
abstract：:In congestive heart failure, the chronic sympathetic hyperactivity contributes to a poor prognosis. In this respect, clonidine, a centrally acting sympathoinhibitory drug, has previously been tested in clinical trials. The aim of the current study was to evaluate the effects of clonidine on morbidity and mortality in ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200302000-00008
更新日期：2003-02-01 00:00:00
abstract：:In a double blind, randomized placebo-controlled crossover study we characterized how terbutaline affects the mean and short-term fluctuations of peripheral vascular resistance and arterial compliance. The study was carried out in six young and healthy male subjects in the supine and upright positions by recording con...
journal_title：Journal of cardiovascular pharmacology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1097/00005344-200407000-00010
更新日期：2004-07-01 00:00:00
abstract：:To evaluate the safety and pharmacologic activity of ITF 296 in humans, three groups of healthy male normotensive subjects were studied. The first two groups (six subjects each) received, in ascending order, three dose levels of ITF 296 by 30-min intravenous infusion (group I, 0.1, 0.5, 1.0 microgram/kg/min; group II,...
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：1995-01-01 00:00:00
abstract：:We investigated the role of nitric oxide (NO) in the modulation of renal O2 consumption in dogs with pacing-induced congestive heart failure (CHF). O2 consumption in the renal cortex (C) and medulla (M) of normal dogs and dogs with CHF was measured under control conditions and in the presence of increasing concentrati...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200103000-00008
更新日期：2001-03-01 00:00:00
abstract：:The similarity between the metabolic pathways of serotonin in platelets and serotoninergic nerve endings has often been emphasized. The turnover of serotonin was therefore investigated in two diseases: hypertension (as central serotoninergic neurones appear to modulate central sympathetic nervous activity) and depress...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-198500077-00003
更新日期：1985-01-01 00:00:00
abstract：:Endothelium-derived relaxing factor (EDRF) and donors of nitric oxide (NO) (glyceryl trinitrate, SIN-1--a metabolite of molsidomine--S-nitroso-N-acetyl-penicillamine, and sodium nitroprusside) but not prostacyclin and its analog, iloprost, relax strips of rabbit aorta. Strips of human coronary artery also relax when e...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：1989-01-01 00:00:00
abstract：:Endothelial progenitor cells (EPCs) play a critical role in maintenance of the endothelial integrity and vascular homeostasis, as well as in neovascularization. Dysfunctional EPCs are believed to contribute to the endothelial dysfunction and are closely related to the development of various cardiovascular diseases, su...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：10.1097/FJC.0000000000000166
更新日期：2015-01-01 00:00:00
abstract：:We recently found that TGF-beta increases ET-1 secretion in MDCK, a renal tubular cell line. The secretion of ET-1, by a confluent monolayer of MDCK cells grown on a filter, to the basolateral side of the epithelium was two times greater than that to the apical side. However, TGF-beta-increased ET-1 and big ET-1 secre...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199100177-00065
更新日期：1991-01-01 00:00:00
abstract：:We examined four commercially available human cell lines for endothelin-converting-enzyme-(ECE) like activity and compared the results with primary porcine aortic endothelial cell enzymes. The cells that were investigated were 293 (transformed primary human embryonal kidney), Hep G2 (human hepatocellular carcinoma), H...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199322008-00025
更新日期：1993-01-01 00:00:00
abstract：:Diazepam (DZP) is commonly used in treatment of patients with acute ischemic syndromes to allay anxiety, but benzodiazepines reduce myocardial contractility and increase myocardial blood flow. To investigate the antiischemic effect of DZP, we studied 13 patients with a positive exercise test and angiographically docum...
journal_title：Journal of cardiovascular pharmacology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1097/00005344-199407000-00010
更新日期：1994-07-01 00:00:00
abstract：:The purpose of the two double-blind studies summarized in this article was to compare the antianginal and anti-ischemic effects of nicorandil with those of two different nitrate preparations. A total of 129 patients with stable New York Heart Association functional class II or III coronary heart disease were enrolled ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 临床试验,杂志文章,多中心研究,随机对照试验
doi：
更新日期：1992-01-01 00:00:00
abstract：:Ghrelin is a novel growth hormone (GH)-releasing peptide, isolated from the stomach, which is identified as an endogenous ligand for GH secretagogues receptor. Although both ghrelin and its specific receptor are expressed in blood vessels, the cardiovascular effects of ghrelin remain unknown. To clarify whether ghreli...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200206000-00001
更新日期：2002-06-01 00:00:00
abstract：:Studies were undertaken to establish the regional hemodynamic profile and dose-response relation of the adenosine triphosphate (ATP)-dependent potassium channel activator lemakalim in anesthetized rats. In addition, the ability of the sulphonylurea potassium channel blocker glybenclamide to reverse the hemodynamic eff...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199701000-00008
更新日期：1997-01-01 00:00:00
abstract：:Clopidogrel (CLO) is a clinical antiplatelet agent, about which there are major concerns because its antiplatelet efficiency decreases with insufficient metabolic activation, leading to "clopidogrel resistance." We aimed to determine the antiplatelet effects of W1, a novel molecule composed of 2-O-clopidogrel and aspi...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/FJC.0000000000000449
更新日期：2017-02-01 00:00:00
abstract：:The development of tolerance to the antihypertensive effect of clonidine and related imidazolines is clinically recognized. Here, we employed a restricted daytime (8:30 AM until 4:30 PM) clonidine regimen to establish a model of sustained hypotension in spontaneously hypertensive rats (SHRs). Blood pressure (BP), hear...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/FJC.0b013e3180318afb
更新日期：2007-03-01 00:00:00
abstract：:Calcium sensitizers may influence myocardial energetics by their action on calcium turnover and on crossbridge behavior. Using a myothermal method, the effects of the Ca2+ sensitizer EMD-53998 on calcium cycling, crossbridge behavior, and myocardial energy turnover were compared with the effects of an increase in extr...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：1995-01-01 00:00:00
abstract：:Prazosin, in daily doses of 6--16 mg, was used along with furosemide and polythiazide in 11 hypertensive heart failure patients. Average supine and standing blood pressures were reduced from 180/108 and 171/106 to 130/84 and 135/86, respectively. Average heart rate decreased from 83 to 73 supine and from 84 to 75 stan...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：1979-11-01 00:00:00
abstract：:Reduced pressor responsiveness to angiotensin II (Ang II) during pregnancy and sodium depletion is a well-known but little understood phenomenon; whether the same mechanisms are involved in both situations is unclear. In pregnant humans, altered vascular reactivity to norepinephrine (NE) has also been demonstrated. Ni...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199606000-00020
更新日期：1996-06-01 00:00:00
abstract：:The renin-angiotensin system (RAS) plays an important role in blood pressure control and in water and salt homeostasis. It is involved in the pathophysiology of hypertension and structural alterations of the vasculature, kidney, and heart, including neointima formation, nephrosclerosis, postinfarction remodeling, and ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：10.1097/00005344-199900001-00005
更新日期：1999-01-01 00:00:00
abstract：:An attempt was made to study possible interaction between neuromodulation by adenosine and nicotine stimulatory effects. Dose-effect curves were made double blind in 7 nonsmoking, nonsnuffing healthy volunteers (25-49 years) before and during exposition to nicotine roughly corresponding to the nicotine of one cigarett...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199012000-00015
更新日期：1990-12-01 00:00:00
abstract：:The purpose of this study was to determine the receptor subtype mediating enhanced contractile responses of aortae and mesenteric arteries from diabetic rats to the alpha-adrenoceptor agonists, norepinephrine, clonidine, and methoxamine and to establish whether the enhanced responses are associated with increased rele...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199008000-00010
更新日期：1990-08-01 00:00:00
