Characterization of distinct angiotensin II binding sites in rat adrenal gland and bovine cerebellum using selective nonpeptide antagonists.

Abstract:

:We investigated the characteristics of 125I-AII binding to rat adrenal and bovine cerebellar membranes in the presence and absence of new nonpeptide angiotensin II (AII) receptor ligands. The imidazole AII ligands, DUP753 and WL19, both produced biphasic competition curves to 125I-AII binding in rat adrenal glomerulosa and adrenal medulla particles, suggesting the existence of two distinct AII binding sites. Antagonist affinity (Ki) and binding capacity (Bmax) for each binding site was determined using nonlinear analysis of competition data fit to a two-site model. The high capacity site (68% of total specific 125I-AII bound) in glomerulosa had high affinity for DUP753 (4.6 +/- 0.8 nM) and low affinity for WL19 (29 +/- 3 microM), and the low capacity site had high affinity for WL19 (3.3 +/- 1.4 nM) and low affinity for DUP753 (51 +/- 9 microM). Conversely, in medulla, the high capacity site (77% total binding) had high affinity for WL19 (19 +/- 6 nM) and low affinity for DUP753 (29 +/- 8 microM), and the low capacity site had low affinity for WL19 (25 +/- 7 microM) but a high affinity for DUP753 (2.8 +/- 2.0 nM). In glomerulosa, binding parameters for the nonpeptide ligands at each site derived from monophasic competition curves obtained in the presence of either 0.3 microM DUP753 or WL19 to selectively block the high or low capacity binding site, respectively, were similar to values determined from the biphasic competition curves. Unlike the nonpeptide inhibitors, unlabeled AII yielded monophasic inhibition curves.(ABSTRACT TRUNCATED AT 250 WORDS)

journal_name

J Cardiovasc Pharmacol

authors

Wiest SA,Rampersaud A,Zimmerman K,Steinberg MI

doi

10.1097/00005344-199102000-00001

subject

Has Abstract

pub_date

1991-02-01 00:00:00

pages

177-84

issue

2

eissn

0160-2446

issn

1533-4023

journal_volume

17

pub_type

杂志文章
  • Effects of tocainide enantiomers on experimental arrhythmias produced by programmed electrical stimulation.

    abstract::The enantiomers of tocainide, a Class Ib antiarrhythmic agent, have recently been shown to exhibit differences in antiarrhythmic activity and pharmacokinetic characteristics. The present study examined the antiarrhythmic and electrophysiological effects of SR tocainide, S tocainide, and R tocainide on arrhythmias in a...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Uprichard AC,Allen JD,Harron DW

    更新日期:1988-02-01 00:00:00

  • Immunoreactive endothelin-1 and its receptors in human adrenal tissues.

    abstract::To elucidate the pathophysiologic significance of endothelin-1 (ET-1) in adrenal and the mechanism for reduced responsiveness to exogenous ET-1 in aldosterone-producing adenoma (APA), we have investigated ET-1 receptors by radioligand binding assay (RBA) in human normal adrenal (NA), APA, idiopathic hyperaldosteronism...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-199800001-00059

    authors: Zeng Z,Tang X,Yang D,Li H,Zhang R,Zeng Q,Li M,Chen J,Lu Z,Demura H,Naruse M,Shi Y

    更新日期:1998-01-01 00:00:00

  • Decrease in plasma NOx concentration by isosorbide dinitrate, an organic nitrate ester.

    abstract::It has been suggested that isosorbide dinitrate (ISDN)-induced venodilation could be ascribed to preferential accumulation of the agent in venous tissues, resulting in higher concentrations of nitric oxide (NO). Here, the authors investigated whether the venodilating effect of ISDN is associated with a preferential in...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 临床试验,杂志文章

    doi:10.1097/00005344-200301000-00006

    authors: Ishibashi T,Himeno M,Kubota K,Matsubara T,Hori T,Ozaki K,Yamazoe M,Aizawa Y,Yoshida J,Nishio M

    更新日期:2003-01-01 00:00:00

  • Hemodynamic effects of isoprostanes (8-iso-prostaglandin F2alpha and E2) in isolated guinea pig hearts.

    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

    authors: Möbert J,Becker BF,Zahler S,Gerlach E

    更新日期:1997-06-01 00:00:00

  • Molecular characterization of endothelin receptors and the effect of insulin on their expression in retinal microvascular pericytes.

    abstract::Microvascular pericytes contain predominantly endothelin A (ET(A))-like binding sites and also a smaller number of ETB binding sites. In this study we verified the expression of both receptors in these cells. We then examined the effect of insulin, a potent mediator of vasodilatation, on the expression of these recept...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:

    authors: McDonald D,Bailie J,Archer D,Chakravarthy U

    更新日期:1995-01-01 00:00:00

  • SIN-1-induced cytotoxicity in cultured endothelial cells involves reactive oxygen species and nitric oxide: protective effect of sepiapterin.

    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

    authors: Ishii M,Shimizu S,Momose K,Yamamoto T

    更新日期:1999-02-01 00:00:00

  • Upregulation of OX40-OX40 ligand system on T lymphocytes in patients with acute coronary syndromes.

    abstract:OBJECTIVE:To investigate whether upregulation of OX40-OX40 ligand (OX40L) system is related to stability of coronary atherosclerotic plaque in patients with coronary heart diseases. METHODS:Thirty normal controls and 250 patients, including 80 with stable angina (SA), 110 with unstable angina (UA), and 60 with acute m...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/FJC.0b013e3181be7578

    authors: Yan J,Chen G,Gong J,Wang C,Du R

    更新日期:2009-11-01 00:00:00

  • Diuretic effectiveness of hydrochlorothiazide and furosemide alone and in combination in chronic renal failure.

    abstract::In the absence of formal clinical trials, the efficacy of thiazide diuretics in patients with renal impairment remains in doubt. Our study was therefore designed to evaluate the separate and combined effects of single and multiple doses of hydrochlorothiazide (HCTZ) and furosemide (FU) on the glomerular filtration rat...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1097/00005344-199509000-00008

    authors: Knauf H,Mutschler E

    更新日期:1995-09-01 00:00:00

  • Low-density lipoprotein inhibits receptor-mediated prostaglandin synthesis without affecting calcium and arachidonic acid mobilization in human endothelial cells.

    abstract::Vascular serotonin 5-HT1 receptors have quiescent constrictor activity that is activated by other vasoactive agents such as histamine. Previously, we observed that the 5-HT1-selective agonist 5-carboxamidotryptamine (5-CT) potentiated histamine-stimulated arachidonic acid (AA) mobilization and prostaglandin production...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-200411000-00015

    authors: Kilbourne EJ

    更新日期:2004-11-01 00:00:00

  • Influence of CYP2D6 genotype on metoprolol plasma concentration and beta-adrenergic inhibition during long-term treatment: a comparison with bisoprolol.

    abstract::In patients routinely treated with metoprolol, influences of CYP2D6 genotype on the response of heart rate to isoproterenol (IP) were studied at its peak and trough concentrations and were compared with those of bisoprolol. In 72 patients treated with metoprolol or bisoprolol, CYP2D6 genotype (ie, CYP2D6*1, *2, *4, *5...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/01.fjc.0000184117.76188.68

    authors: Nozawa T,Taguchi M,Tahara K,Hashimoto Y,Igarashi N,Nonomura M,Kato B,Igawa A,Inoue H

    更新日期:2005-11-01 00:00:00

  • Modulators of calcium and potassium channels: their effects on endothelin-1 binding to cardiac membranes.

    abstract::Endothelin-1 (ET-1) causes long-lasting vasoconstriction associated with a prolonged elevation of intracellular free Ca2+. Because this may be mediated through an effect on membrane ion channels, we investigated the effects of the dihydropyridine calcium channel antagonist nifedipine; two structurally distinct K+ chan...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-199322008-00041

    authors: Haynes WG,Waugh CJ,Dockrell ME,Olverman HJ,Williams BC,Webb DJ

    更新日期:1993-01-01 00:00:00

  • Baroreflexes and cardiovascular regulation in hypertension.

    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:

    authors: Head GA

    更新日期:1995-01-01 00:00:00

  • Comparison of the effects of nifedipine and nitroglycerin on hemodynamic determinants of myocardial oxygen consumption and supply during exertional angina.

    abstract::To investigate the antianginal action of nitroglycerin and nifedipine, systemic and right heart pressures, cardiac output, oxygen consumption, and radionuclide left ventricular ejection fraction and volume were measured in 14 men with stable effort angina and a positive exercise electrocardiogram. Exercise tests were ...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-198903000-00002

    authors: Choong CY,Freedman SB,Roubin GS,Shen WF,Bautovich GJ,Harris PJ,Kelly DT

    更新日期:1989-03-01 00:00:00

  • The effect of dihydropyridine calcium antagonists in hypertensive patients with impaired renal function.

    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:

    authors: Hansson LH

    更新日期:1989-01-01 00:00:00

  • Regional hemodynamic dose-response of lemakalim and glybenclamide in anesthetized rats.

    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

    authors: Smits GJ,Perrone MH,Cox BF

    更新日期:1997-01-01 00:00:00

  • Nitric oxide in responses of regional kidney blood flow to vasoactive agents in anesthetized rabbits.

    abstract::To determine whether differential release of nitric oxide underlies the diversity of regional kidney blood flow responses to vasoactive agents, this study examined how nitric oxide synthase blockade with IV N(G)-nitro-L-arginine (L-NNA), and also IV L-NNA plus co-infusion of glyceryl trinitrate, affected responses to ...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-200208000-00006

    authors: Rajapakse NW,Oliver JJ,Evans RG

    更新日期:2002-08-01 00:00:00

  • mAKAP-a master scaffold for cardiac remodeling.

    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

    authors: Passariello CL,Li J,Dodge-Kafka K,Kapiloff MS

    更新日期:2015-03-01 00:00:00

  • Development and application of three radioimmunoassays of endothelin of varying specificities.

    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

    authors: Capper SJ,Ella SJ,Kalinka S

    更新日期:1991-01-01 00:00:00

  • Selective targeting of matrix metalloproteinase inhibition in post-infarction myocardial remodeling.

    abstract:BACKGROUND:A cause-effect relationship has been established between MMP activation and left ventricular (LV) remodeling following myocardial infarction. The goal of the present study was to examine a selective MMP inhibitor (sMMPi) strategy that effectively spared MMP-1, -3, and -7 with effect to regional and global le...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/01.fjc.0000200989.23987.b8

    authors: Apple KA,Yarbrough WM,Mukherjee R,Deschamps AM,Escobar PG,Mingoia JT,Sample JA,Hendrick JW,Dowdy KB,McLean JE,Stroud RE,O'Neill TP,Spinale FG

    更新日期:2006-02-01 00:00:00

  • Comparison of captopril and enalapril to study the role of the sulfhydryl-group in improvement of endothelial dysfunction with ACE inhibitors in high dieted methionine mice.

    abstract::To examine the role of sulfhydryl (-SH) group in improvement of endothelial dysfunction with angiotensin-converting enzyme (ACE) inhibitors in experimental high dose of methionine dieted rats. We compared the effects of Captopril (an ACE inhibitor with -SH group), enalapril (an ACE-inhibitor without -SH group), N-acet...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/01.fjc.0000195306.61719.64

    authors: Liu YH,Liu LY,Wu JX,Chen SX,Sun YX

    更新日期:2006-01-01 00:00:00

  • Electrophysiologic effects of intravenous nicardipine on sinus node function and conduction in humans.

    abstract::We conducted an intracardiac study of the electrophysiologic effects and kinetics of intravenous nicardipine (N) in 16 patients with or without impaired cardiac conduction, using a randomized, double-blind, crossover design versus placebo (P). N or P were infused intravenously over 5 min: the dose of N was 9.46 +/- 3....

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1097/00005344-199001000-00021

    authors: David D,Guize L,Leheuzey JY,Lavergne T,Loria Y,Ourbak P

    更新日期:1990-01-01 00:00:00

  • Interaction between NO donors and iloprost in human vascular smooth muscle, platelets, and leukocytes.

    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:

    authors: Gryglewski RJ,Korbut R,Trabka-Janik E,Zembowicz A,Trybulec M

    更新日期:1989-01-01 00:00:00

  • Perspectives of hypertension in black patients: black vs. white differences.

    abstract::Hypertension is a major disease in the black population of sub-Saharan Africa and the U.S. The prevalence of hypertension varies from 1-30% of the adult population. Differences in blood pressure (BP) between black and white patients have been documented. In this review, genetic, endocrine, and environmental characteri...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章,评审

    doi:

    authors: Seedat YK

    更新日期:1990-01-01 00:00:00

  • Effects of verapamil on accessory pathway properties and induction of circus movement tachycardia in patients with the Wolf-Parkinson-White syndrome.

    abstract::The electrophysiological effects of 0.2 mg/kg of intravenously administered verapamil (mean plasma level, 51.3 ng/ml) were evaluated using intracardiac recordings and electrical stimulation in 10 patients with the concealed or manifest Wolff-Parkinson-White syndrome. Verapamil produced a minimal effect on both the ant...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-198101000-00002

    authors: Matsuyama E,Konishi T,Okazaki H,Matsuda H,Kawai C

    更新日期:1981-01-01 00:00:00

  • Antihypertensive therapy with MK 421: angiotensin II--renin relationships to evaluate efficacy of converting enzyme blockade.

    abstract::Nineteen hypertensive patients were treated with increasing doses of the new angiotensin-converting enzyme inhibitor MK 421. Twenty milligrams orally reduced blood pressure from 180/112 +/- 6.8/3.6 (mean +/- SEM) to 160/100 +/- 6.5/3.3 mm Hg (p less than 0.005) while heart rate increased from 75 +/- 2 to 87 +/- 3 beat...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Biollaz J,Brunner HR,Gavras I,Waeber B,Gavras H

    更新日期:1982-11-01 00:00:00

  • Preconditioning with levosimendan prevents contractile dysfunction due to H2O2-induced oxidative stress in human myocardium.

    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

    authors: Sahin AS,Görmüş N,Duman A

    更新日期:2007-10-01 00:00:00

  • The pharmacokinetics of ramipril in a group of ten elderly patients with essential hypertension.

    abstract::This open, general practice study looked at the pharmacokinetics of ramipril over a period of 1 year in elderly (greater than 65 years) hypertensive patients. Ten patients with a diastolic blood pressure between 95 and 125 mm Hg were treated with 5 mg of ramipril daily for 4 weeks, followed by an additional 11 months ...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Hosie J,Meredith P

    更新日期:1991-01-01 00:00:00

  • Oxidative stress and apoptosis in cardiomyocyte induced by high-dose alcohol.

    abstract::Binge drinking of alcohol causes cardiac dysfunction in some people. The mechanism remains unclear. This study was designed to investigate high doses of alcohol-induced oxidative stress and apoptosis in cardiomyocytes and protective effects of antioxidants. Cardiomyocytes isolated from 1- to 2-day-old Sprague-Dawley r...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-200412000-00012

    authors: Guan Z,Lui CY,Morkin E,Bahl JJ

    更新日期:2004-12-01 00:00:00

  • The effects of milrinone on action potential characteristics, conduction, automaticity, and reflected reentry in isolated myocardial fibers.

    abstract::Milrinone, a newly developed analogue of amrinone, possesses potent positive inotropic effects. Electrophysiologic actions of the drug have thus far been reported in only one study conducted on canine Purkinje fibers. The present study used microelectrode techniques to evaluate the electrophysiologic effects of milrin...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-198503000-00021

    authors: Davidenko J,Antzelevitch C

    更新日期:1985-03-01 00:00:00

  • Heterogeneity of endothelin receptor.

    abstract::The complex formed between endothelin (ET) and its binding protein was adequately stable to be separated by sodium dodecyl sulfate (SDS)-polyacrylamide gel electrophoresis (PAGE) at low temperature. Cross-linking was not necessary. This simple method was applied for both qualitative (determination of molecular weight ...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-199100177-00028

    authors: Takasuka T,Satoh N,Horii I,Furuichi Y,Watanabe T

    更新日期:1991-01-01 00:00:00