Enhanced contractile responses of arteries from diabetic rats to alpha 1-adrenoceptor stimulation in the absence and presence of extracellular calcium.

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 release of intracellular Ca2+ or are dependent on the presence of extracellular Ca2+. The pA2 values calculated for the alpha 1-selective antagonist prazosin were similar in arteries from control and diabetic rats and were 2.5-3 log units greater than pA2 values calculated for the alpha 2-selective antagonist yohimbine. Contractile responses of aortae incubated in Ca2(+)-free Krebs' solution containing 1 mM EGTA to maximal but not to ED50 concentrations of the alpha-adrenoceptor agonists were significantly greater in preparations from diabetic than from control rats. Following readdition of Ca2+, contractile responses of diabetic aortae to all concentrations of the agonists tested were significantly greater than control. Similar results were obtained in mesenteric arteries, except that no clonidine response could be detected in preparations from either diabetic or control rats in the absence of extracellular Ca2+. These data indicate that enhanced responses of arteries from diabetic rats to alpha-adrenoceptor agonists are mediated by alpha 1 adrenoceptors, and are largely dependent on the presence of extracellular Ca2+. However, increased release of intracellular Ca2+ appears to contribute to enhanced responses to high concentrations of these agonists.

journal_name

J Cardiovasc Pharmacol

authors

Abebe W,Harris KH,MacLeod KM

doi

10.1097/00005344-199008000-00010

subject

Has Abstract

pub_date

1990-08-01 00:00:00

pages

239-48

issue

2

eissn

0160-2446

issn

1533-4023

journal_volume

16

pub_type

杂志文章
  • Hemodynamic response to adenosine infusion before and after coronary artery bypass surgery.

    abstract::This study describes the hemodynamic dose-response characteristics of a titrated, continuous adenosine infusion before and 1 h (anesthetized), 1 week, and 1 year after coronary artery bypass graft (CABG) surgery. Average tolerated adenosine infusion rates were less 1 h and 1 week after surgery (128 +/- 23 and 118 +/- ...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-199703000-00005

    authors: Anderson RE,Lind B,Owall A,Brodin LA

    更新日期:1997-03-01 00:00:00

  • Intravenous dilevalol in the treatment of severe hypertension.

    abstract::Dilevalol, the stereoisomer of labetalol, was given in repeated incremental intravenous bolus injections to 10 patients with severe hypertension requiring urgent blood pressure lowering. The mean cumulative dose of dilevalol was 445 +/- 165 mg. Blood pressure was reduced from 201 +/- 33/131 +/- 13 to 150 +/- 12/109 +/...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Bursztyn M,Gavras I,Blasucci DJ,Gavras H

    更新日期:1989-05-01 00:00:00

  • Vasodilator and inotropic effects of the antiarrhythmic drug melperone.

    abstract::We investigated the hemodynamic and inotropic effects of the new class III antiarrhythmic drug melperone. In eight pentobarbital-anesthetized dogs, the effects of intravenous melperone 0.5, 2.5, and 12.5 mg/kg-1 were tested. During atrial pacing we measured cardiac output (CO), mean aortic blood pressure (MAP), right ...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-198207000-00017

    authors: Platou ES,Smiseth OA,Refsum H,Rouleau JL,Chuck LH

    更新日期:1982-07-01 00:00:00

  • Endocannabinoids and the heart.

    abstract::Endocannabinoids, such as anandamide and 2-arachidonoylglycerol, are synthesized from membrane phospholipids in the heart and other cardiovascular tissues. They activate cannabinoid CB1 and CB2 receptors, transient receptor potential V1 (TRPV1), peroxisome proliferator-activated receptors, and perhaps a novel vascular...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章,评审

    doi:10.1097/FJC.0b013e318192671d

    authors: Hiley CR

    更新日期:2009-04-01 00:00:00

  • Acute effects of intravenous UD-CG 115 BS (pimobendan) on the cardiovascular system and left ventricular pump function.

    abstract::Acute hemodynamic effects of 5 and 10 mg i.v. UD-CG 115 BS (pimobendan) were studied by right and left heart catheterization in idiopathic dilated cardiomyopathy (NYHA classes II and III; 5 mg = group I, n = 6; 10 mg = group II, n = 6). Effects on left ventricular function were evaluated by left ventricular angiograms...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:

    authors: Permanetter B,Sebening H,Hartmann F,Klein G

    更新日期:1989-01-01 00:00:00

  • Absence of pharmacodynamic interaction between inclacumab and heparin in healthy smokers.

    abstract::Inclacumab is a novel monoclonal antibody directed against P-selectin in development for the prevention and treatment of atherosclerotic cardiovascular diseases. It is likely to be used concomitantly with heparin in patients undergoing percutaneous coronary intervention. Coadministration of both drugs may potentially ...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/FJC.0000000000000211

    authors: Schmitt C,Mudie N,Ciorciaro C,Gaudreault J

    更新日期:2015-04-01 00:00:00

  • Stroke as a clinical problem in hypertension.

    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:

    authors: Doyle AE,Donnan GA

    更新日期:1990-01-01 00:00:00

  • Fenofibrate increases homocystinemia through a PPARalpha-mediated mechanism.

    abstract::Plasma homocysteine levels increase in humans treated with fibrates but the molecular mechanisms are unknown. The goal of the present study was to determine the mechanism of this increase using animal models. Firstly, an increase in homocysteine was observed in mice treated with fenofibrate irrespective of the genetic...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-200403000-00017

    authors: Luc G,Jacob N,Bouly M,Fruchart JC,Staels B,Giral P

    更新日期:2004-03-01 00:00:00

  • Antihypertensive effect of canrenone in a model where endogenous ouabain-like factors are present.

    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

    authors: de Mendonça M,Grichois ML,Pernollet MG,Wauquier I,Trouillet-Thormann B,Meyer P,Devynck MA,Garay R

    更新日期:1988-01-01 00:00:00

  • Heart rate turbulence to guide treatment for prevention of sudden death.

    abstract::Heart rate turbulence (HRT) denotes the baroreflex-mediated short-term oscillation of cardiac cycle lengths after spontaneous ventricular premature complexes. The physiological pattern of HRT consists of brief heart rate acceleration followed by more gradual heart rate deceleration before the heart rate returns to bas...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章,评审

    doi:10.1097/FJC.0b013e3181d4c973

    authors: Bauer A,Zürn CS,Schmidt G

    更新日期:2010-06-01 00:00:00

  • Reduction of reperfusion arrhythmias in the ischemic isolated rat heart by angiotensin converting enzyme inhibitors: a comparison of captopril, enalapril, and HOE 498.

    abstract::The effects of the angiotensin converting enzyme (ACE) inhibitors captopril, enalapril, HOE 498, and its prodrug on reperfusion arrhythmias after 15 min of coronary ligation were investigated in the isolated rat heart. Drug concentrations were equipotent in their effect on angiotensin I pressor response. Furthermore, ...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:

    authors: van Gilst WH,de Graeff PA,Wesseling H,de Langen CD

    更新日期:1986-07-01 00:00:00

  • Effect of fenofibrate on lipoprotein(a) in hypertriglyceridemic patients: impact of change in triglyceride level and liver function.

    abstract::We investigated the effect of fenofibrate on lipoprotein(a)levels in hypertriglyceridemic patients and the parameters relating to its effect. Patients with a triglyceride level >/=300 mg/dL or with a triglyceride level >/=200 mg/dL and a high density lipoprotein cholesterol level

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/01.fjc.0000175875.48167.c7

    authors: Ko HS,Kim CJ,Ryu WS

    更新日期:2005-10-01 00:00:00

  • Ethanol reduces the endothelin-B receptor-mediated increase in portal inflow resistance in the isolated, perfused canine liver.

    abstract::Ethanol can affect the regulation of liver hemodynamics through the release of vasoactive mediators such as nitric oxide and endothelins (ETs). The purpose of this study was to investigate the effects of ethanol on the changes in arterial and portal perfusion pressure induced by ET receptor activation. Ethanol signifi...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-199800001-00079

    authors: Faro F,Ferraz JG,Stella HJ,Faro R,Antunes E,Opgennorth TJ,Withrington PG,de Nucci G

    更新日期:1998-01-01 00:00:00

  • Biochemical studies on the mechanism of cardiotonic activity of MDL 17,043.

    abstract::MDL 17,043 (1,3-dihydro-4-methyl-5-[4-(methylthio)-benzoyl]-2H-imidazol-2-one) is a new drug with cardiotonic properties. Its effects on several biochemical systems considered to be important in myocardial contraction were investigated and compared with those produced by amrinone and theophylline. Dog cardiac phosphod...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-198205000-00024

    authors: Kariya T,Wille LJ,Dage RC

    更新日期:1982-05-01 00:00:00

  • Is the ECG measure RSh a promising technique for detecting class I antiarrhythmic drug action in men?

    abstract::Previous animal experiments suggest that the increase in the amplitude from the R-wave to the S-wave (RSh) may be more sensitive than other ECG measures to sodium channel blocking drug actions. We measured RSh of three orthogonal leads at baseline and during intravenous pharmacologic stimulation with adenosine, ajmali...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 临床试验,杂志文章

    doi:10.1097/00005344-199510000-00023

    authors: Wolzt M,Schmetterer L,Gouya G,Zanaschka G,Eichler HG

    更新日期:1995-10-01 00:00:00

  • Vasopeptidase inhibition with omapatrilat improves cardiac geometry and survival in cardiomyopathic hamsters more than does ACE inhibition with captopril.

    abstract::Vasopeptidase inhibitors are single molecules that inhibit neutral endopeptidase (NEP) and angiotensin-converting enzyme (ACE) simultaneously. Omapatrilat, the first in this new class of cardiovascular agents, potentiates vasodilatory and cardioprotective peptides and represses angiotensin II. This study compared the ...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-199912000-00003

    authors: Trippodo NC,Fox M,Monticello TM,Panchal BC,Asaad MM

    更新日期:1999-12-01 00:00:00

  • Chronic treatment after acute myocardial infarction: which drug for which patient? Nitrates.

    abstract::Nitrates are beneficial in post-myocardial infarction patients with stable, unstable, and Prinzmetal's variant angina and as adjunctive therapy in congestive heart failure. They are available in multiple formulations that differ in chemical structure, pharmacokinetics, onset and duration of activity, and peak effect; ...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章,评审

    doi:

    authors: Scardi S

    更新日期:1989-01-01 00:00:00

  • Bisoprolol improves survival in rats with heart failure.

    abstract::The cardioprotective effects of bisoprolol were studied in a rat model of severe heart failure induced by autoimmune myocarditis. Twenty-eight days after immunization, Lewis rats were divided into four groups: 0.1 mg/kg/day bisoprolol (Group 0.1), 1.0 mg/kg/day bisoprolol (Group 1) and 10 mg/kg/day bisoprolol (Group 1...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-200110001-00012

    authors: Watanabe K,Ohta Y,Inoue M,Ma M,Wahed MI,Nakazawa M,Hasegawa G,Naito M,Fuse K,Ito M,Kato K,Hanawa H,Kodama M,Aizawa Y

    更新日期:2001-10-01 00:00:00

  • Inability of metoprolol to achieve a sustained limitation of infarct size 24 h after coronary artery embolization in the closed chest dog.

    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:

    authors: Kudoh Y,Maxwell MP,Hearse DJ,Downey JM,Yellon DM

    更新日期:1984-11-01 00:00:00

  • The effect of flutamide on systemic and renal hemodynamics in Zucker diabetic rats: paradoxic renal vasodilator response to endothelin-1 and TXA2 receptor activation in female sex.

    abstract:BACKGROUND:There is increasing evidence that endogenous sex hormones regulate vascular reactivity, and testosterone may contribute to the worse prognosis for renal disease in men. Male Zucker diabetic rats exhibit improved renal hemodynamic responses after castration. It is, however, unclear whether endogenous testoste...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/01.fjc.0000246941.84607.11

    authors: Ajayi AA,Fidelis P

    更新日期:2006-11-01 00:00:00

  • Hypertension and atherosclerosis: effects of antihypertensive drugs on arterial flow patterns.

    abstract::High blood pressure (BP) is associated with increased risk of vascular disease, including myocardial infarction and stroke. Since drugs that lower BP will reduce the risk of those complications of hypertension that are due to high pressure (strokes due to small-vessel disease, including lacunar infarction and intracer...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章,评审

    doi:

    authors: Spence JD

    更新日期:1987-01-01 00:00:00

  • Inactivation of released norepinephrine in rat tail artery by neuronal uptake.

    abstract::The relationship between adrenergic nerve activity and neuronal uptake was investigated. Helically cut strips of rat tail artery were mounted in organ chambers and isometric contractions were recorded. Spontaneous contractions were occasionally observed and these contractions were blocked by phentolamine. Cumulative a...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-198003000-00004

    authors: Webb RC,Vanhoutte PM,Bohr DF

    更新日期:1980-01-01 00:00:00

  • Ketanserin reduces graft arteriosclerosis after allogeneic aorta transplantation in rats.

    abstract::The serotonin-2 receptor antagonist ketanserin has been suggested to diminish arteriosclerotic development by its effect on platelet function and on vascular smooth muscle cells. We investigated the ability of ketanserin in reducing immune-mediated arteriosclerosis using the BN-WAG and WAG-BN rat aortic transplantatio...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-199603000-00001

    authors: Geerling RA,de Bruin RW,Scheringa M,Bonthuis F,IJzermans JN,Marquet RL

    更新日期:1996-03-01 00:00:00

  • The combination of chlorthalidone with nifedipine does not exert an additive antihypertensive effect in essential hypertensives: a crossover multicenter study.

    abstract::To evaluate whether the combination of nifedipine with chlorthalidone exerts an additive antihypertensive effect when compared to single-drug treatment, 66 uncomplicated essential hypertensives, whose diastolic blood pressure was greater than 100 and less than 115 mm Hg at the end of a 1-month washout placebo period, ...

    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:10.1097/00005344-199102000-00021

    authors: Salvetti A,Magagna A,Innocenti P,Ponzanelli F,Cagianelli A,Cipriani M,Gandolfi E,Del Prato C,Ballestra AM,Saba P

    更新日期:1991-02-01 00:00:00

  • Effect of HMGCoA reductase inhibitors on cytochrome P450 expression in endothelial cell line.

    abstract::Endothelial cells and smooth muscle cells are the major cells that constitute blood vessels, and endothelial cells line the lumen of blood vessels. These 2 types of cells also play an integral role in the regional specialization of vascular structure. On the basis of these observations, we designed our study to invest...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/FJC.0b013e31803e8756

    authors: Bertrand-Thiebault C,Masson C,Siest G,Batt AM,Visvikis-Siest S

    更新日期:2007-05-01 00:00:00

  • Tetrachlorodecaoxygen, a wound healing agent, produces vascular relaxation through hemoglobulin-dependent inactivation of serotonin and norepinephrine.

    abstract::We investigated the vasoactive actions of the wound-healing agent tetrachlorodecaoxygen (TCDO). TCDO (20 microM) had no direct effect on tone in isolated calf pulmonary arteries precontracted with potassium with or without 1 microM reduced hemoglobin under O2 or N2 atmosphere. However, TCDO, in a reduced hemoglobin-de...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-199404000-00022

    authors: Wolin MS,Kleber E,Mohazzab KM,Elstner EF

    更新日期:1994-04-01 00:00:00

  • Comparative effects of loratadine and terfenadine on cardiac K+ channels.

    abstract::Nonsedating H1-receptor antagonists appear to have wide and variable effects on the QT interval, mediated through modulation of cardiac K+ channels. By using the whole-cell patch-clamp technique, we examined the effects of terfenadine, loratadine, and descarboethoxyloratadine on a large family of K+ channels in ventri...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-199707000-00007

    authors: Ducic I,Ko CM,Shuba Y,Morad M

    更新日期:1997-07-01 00:00:00

  • Antiarrhythmic Effect of Either Negative Modulation or Blockade of Small Conductance Ca2+-activated K+ Channels on Ventricular Fibrillation in Guinea Pig Langendorff-perfused Heart.

    abstract::During recent years, small conductance Ca-activated K (SK) channels have been reported to play a role in cardiac electrophysiology. SK channels seem to be expressed in atria and ventricles, but from a functional perspective, atrial activity is predominant. A general notion seems to be that cardiac SK channels are pred...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/FJC.0000000000000278

    authors: Diness JG,Kirchhoff JE,Sheykhzade M,Jespersen T,Grunnet M

    更新日期:2015-09-01 00:00:00

  • Beneficial effects of a new prostacyclin analogue, KP-10614, on acute myocardial infarction in rats.

    abstract::The potential therapeutic value of a new prostacyclin analogue, (4z, 16s)-4,5,18,18,19,19-hexadehydro-16,20-dimethyl-delta 6(9a)- 9-(O)-methano-PGI1 (KP-10614), was studied in acute myocardial infarction in rats. Myocardial infarction was induced by ligation of the left coronary artery and ischemic injury was followed...

    journal_title:Journal of cardiovascular pharmacology

    pub_type: 杂志文章

    doi:10.1097/00005344-199210000-00017

    authors: Kanayama T,Kimura Y,Tamao Y,Mizogami S

    更新日期:1992-10-01 00:00:00

  • Effects of perindopril on tissue angiotensin-converting enzyme activity demonstrated by quantitative in vitro autoradiography.

    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

    authors: Sakaguchi K,Jackson B,Chai SY,Mendelsohn FA,Johnson CI

    更新日期:1988-12-01 00:00:00