Abstract:
:The increased production of nitric oxide (NO) has been implicated as the basis for myocardial dysfunction and the lack of response to vasoconstrictors during endotoxin shock induced by lipopolysaccharide (LPS). Our objective was to evaluate and compare NO production in major organs of rats treated with LPS, 1 or 14 mg/kg. A NO spin-trapping technique using electron spin resonance (ESR) spectroscopy has been used to study NO production in the liver, the kidney, the aorta, and the heart. The method was based on the trapping of NO by a metal-chelator complex consisting of N-methyl-D-glucamine dithiocarbamate (MGD) and reduced iron (Fe2+) to form a stable [(MGD)2-Fe2+-NO] complex, giving rise to a characteristic triplet ESR spectrum with g = 2.04 and aN = 12.65 G: Iron was quantified in the different organs to study the [(MGD)2-Fe2+] complex distribution. Six hours after intravenous injection of 1 or 14 mg/kg of LPS, we observed large increases in the [(MGD)2-Fe2+-NO] adduct signal in the liver, the kidney, and in the aorta, strongly suggesting an increased production of NO in these organs. The [(MGD)2-Fe2+-NO] adduct was also detected in the heart, 6 h after injection of LPS. Moreover, we observed dose-dependent increases in [(MGD)2-Fe2+-NO] adduct in the heart, whereas no changes were observed in the other organs. Concurrently, the [(MGD)2-Fe2+-NO] adduct was not detected in the blood from rats treated with LPS, although circulating nitrosylhemoglobin, nitrite, and nitrate levels increased. The spin-trapping technique allowed us to monitor organ-specific formation of NO after LPS administration and for the first time demonstrated direct NO production in aorta and heart of LPS-treated animals.
journal_name
J Cardiovasc Pharmacoljournal_title
Journal of cardiovascular pharmacologyauthors
Lecour S,Maupoil V,Siri O,Tabard A,Rochette Ldoi
10.1097/00005344-199901000-00012subject
Has Abstractpub_date
1999-01-01 00:00:00pages
78-85issue
1eissn
0160-2446issn
1533-4023journal_volume
33pub_type
杂志文章abstract::LY53857, spiperone, ketanserin, and setoperone were potent and competitive 5-HT2-receptor antagonists in the rat jugular vein with equivalent affinities at 5-HT2 receptors. In the rat jugular vein, ritanserin blocked 5-HT2-mediated contractile responses with a depression of the maximum response in concentrations great...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:
更新日期:1988-01-01 00:00:00
abstract::The positive inotropic action of phenylephrine in cardiac muscle is mediated by alpha- and beta-adrenoceptors. Data suggest the responsiveness of myocardium to inotropic agents is altered in cardiac disease. We evaluated the actions of phenylephrine on isometric contraction and K+-induced contracture in isolated cat r...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198403000-00005
更新日期:1984-03-01 00:00:00
abstract:BACKGROUND:The purpose of this study was to determine the effect of a combination of bone marrow mononuclear cell (BM-MNC) implantation and sarpogrelate, a selective 5-HT(2A) antagonist, on endothelial function in patients with critical limb ischemia (CLI). METHODS:We evaluated the leg blood flow (LBF) responses to ac...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1097/FJC.0b013e3181c37da4
更新日期:2010-01-01 00:00:00
abstract:BACKGROUND:Numerous studies have demonstrated that fibroblast growth factor-2 (FGF-2) signaling may play a pivotal role in the development of pulmonary arterial hypertension (PAH). Excessive endothelial FGF-2 contributes to smooth muscle hyperplasia and disease progression. PD173074 is a potent FGF receptor 1 (FGFR-1) ...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/FJC.0000000000000302
更新日期:2015-11-01 00:00:00
abstract::In urban Australia, the risk of retiring with hypertension is greater than 40%, and the basic abnormality--a rise in blood pressure (BP) with age--is almost universal. A hypothesis linking this with salt, therefore, concerns everyone. The diet of early humans was unsalted, and the Na content of breast milk (6 mmol/kg)...
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::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::We have developed three radioimmunoassays (RIAs) of varying specificities toward the endothelin (ET) isoforms. The assays are called the endothelin-1,2[125I] assay system (RPA535), the endothelin 1-21 Specific [125I] assay system (RPA555), and the endothelin-1,2 high-sensitivity [125I] assay system (RPA545). We have f...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199100177-00121
更新日期:1991-01-01 00:00:00
abstract::In this retrospective study, a group of 435 patients provided meaningful analyses of blood pressure and dosage data for treatment periods of up to 4.5 years. The protocol, study objectives, and pretreatment demographic characteristics of the group are summarized in this report, which is the first in a series in this i...
journal_title:Journal of cardiovascular pharmacology
pub_type: 临床试验,杂志文章
doi:
更新日期:1981-01-01 00:00:00
abstract::The integration of the needs of children into the legal drug development process since 1997 in the United States and since 2007 in the European Union has improved health and stimulated innovative approaches in the design of clinical trials and will benefit both current and future populations. According to the US Food ...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:10.1097/FJC.0b013e31822233c1
更新日期:2011-09-01 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::This presentation has reviewed evidence from our laboratory that both structural and functional changes participate in the initiation and maintenance of hypertension in spontaneously hypertensive rats (SHR). Structural changes are present in the muscular arteries of the mesenteric and renal vasculature at 3- to 5-week...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198406004-00014
更新日期:1984-01-01 00:00:00
abstract::Doxorubicin (DOX), a potent antineoplastic agent, poses limitations for its therapeutic use due to the associated risk of developing cardiomyopathy and congestive heart failure. The cardiotoxicity of doxorubicin is associated with oxidative stress and apoptosis. We have recently shown that Spirulina, a blue-green alga...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/01.fjc.0000191520.48404.27
更新日期:2006-01-01 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::Cardiac remodeling is regulated by an extensive intracellular signal transduction network. Each of the many signaling pathways in this network contributes uniquely to the control of cellular adaptation. In the last few years, it has become apparent that multimolecular signaling complexes or "signalosomes" are importan...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:10.1097/FJC.0000000000000206
更新日期:2015-03-01 00:00:00
abstract::Calcium channel blockade appears to be at least as effective as beta-blockade in the treatment of anginal syndromes, but whether a similar protective effect is afforded against sudden death is unknown. In order to compare experimental antifibrillatory effects of calcium channel blockade (diltiazem), beta-adrenoceptor ...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198409000-00007
更新日期:1984-09-01 00:00:00
abstract::The effects of tilisolol, a nonselective beta-adrenoceptor blocker, on transmembrane ionic currents were studied in single guinea pig ventricular myocytes by using the whole-cell voltage clamp technique. In the absence of beta-adrenergic stimulation, 10 microM tilisolol, a concentration higher than that used in the cl...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199705000-00005
更新日期:1997-05-01 00:00:00
abstract::Effects of diltiazem on coronary vascular functional integrity were assessed in isolated rabbit hearts during reperfusion after 30 min of global, no-flow ischemia. External detection of radiolabeled albumin, [125I]bovine serum albumin ([125I]BSA), and compartmental-model analysis were used to estimate the mean transit...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198505000-00003
更新日期:1985-05-01 00:00:00
abstract::The effects of local myocardial administration of lactic acid and low-dose edaravone were investigated to determine if this combination provides benefits similar to mechanical postconditioning. We randomly divided 108 rats into 6 groups: sham, reperfusion injury, postconditioning (Post), lactic acid (Lac), low-dose ed...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/01.fjc.0000432860.48345.9d
更新日期:2013-10-01 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::Since beta-adrenoceptor blocking drugs were originally discovered and shown to be important therapeutic agents in the management of both angina pectoris and hypertension, many other similar drugs have become available. These share the common property of beta-adrenoceptor antagonism, though they may vary in terms of po...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:10.1097/00005344-198608006-00002
更新日期:1986-01-01 00:00:00
abstract::Results of previous studies indicate that monophosphoryl lipid A (MLA) reduces myocardial infarct size when administered 24 but not 1 h before a prolonged period of regional ischemia in dogs and rabbits. This cardioprotective effect of MLA could be reversed by the administration of the adenosine triphosphate (ATP)-sen...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199807000-00008
更新日期:1998-07-01 00:00:00
abstract::In this study, we compared the effect of the essential oil of Citrus bergamia Risso [bergamot, bergamot essential oil (BEO)] on the intracellular Ca levels in vascular endothelial (EA) and mouse vascular smooth muscle (MOVAS) cells, using the fura-2 fluorescence technique. BEO caused an initial transient increase in i...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/FJC.0b013e3182834681
更新日期:2013-04-01 00:00:00
abstract::By using red wine (RW), dealcoholized red wine (DARW), polyphenols-stripped red wine (PSRW), ethanol-water solution (ET), and water (W), the role of wine polyphenols, ethanol, and urate on vascular function was examined in humans (n = 9 per beverage) and on isolated rat aortic rings (n = 9). Healthy males randomly con...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1097/01.fjc.0000211762.06271.ce
更新日期:2006-05-01 00:00:00
abstract::We studied the short-term effects of oral administration of nisoldipine (10 mg) and propranolol (80 mg) alone and in combination in 14 patients with chronic exertional angina pectoris in a double-blind, randomized, cross-over study. The 14 patients (13 men and 1 woman, mean age 56 +/- 7 years) performed symptoms-limit...
journal_title:Journal of cardiovascular pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00005344-199008000-00020
更新日期:1990-08-01 00:00:00
abstract::Although myocardial ischemia is associated with regional cardiac sympathetic nerve deterioration, it remains unknown whether acute hindlimb ischemia impairs muscle sympathetic nerve function. In the study presented here we implanted dialysis probes in the adductor muscle of anesthetized rabbits and measured dialysate ...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-200312001-00003
更新日期:2003-12-01 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::In patients on chronic hemodialysis hypotensive episodes are frequently encountered during the course of treatment and the prevalence of atherosclerosis is increased. Endothelin-1 (ET-1), an endothelium-derived peptide with vasoconstrictive and mitogenic effects on smooth muscles, is involved in vascular tone regulati...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/01.fjc.0000166215.50415.36
更新日期:2004-11-01 00:00:00
abstract::Endothelin (ET)-related peptides robustly stimulated [3H]-inositol phosphate (IP) formation in cultured cerebellar granule cells, astrocytes, and C6 glioma cells. Their agonist selectivities were ET-1 = ET-2 greater than or equal to sarafotoxin S6b greater than ET-3 greater than big ET-1 for granule cells and ET-1 gre...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:
更新日期:1991-01-01 00:00:00
abstract::Left ventricular hypertrophy (LVH), an increase in the muscle mass of the left ventricle, has been identified as a powerful risk factor for future cardiovascular morbidity and mortality. The risk of acute myocardial infarction, congestive heart failure, sudden death, and other cardiovascular events increases six- to e...
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::Lidocaine and tocainide had no effect on ventricular conduction of extrasystoles with coupling intervals longer than 500 msec in isolated blood-perfused dog hearts, but caused interval-related increases in conduction time of extrasystoles in the range of 250--400 msec, here called mid-range extrasystoles (MRE). Quinid...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-197905000-00005
更新日期:1979-05-01 00:00:00