The mode of direct action of dopamine on the rabbit heart.

abstract：:Guinea pig papillary muscles were preincubated in the presence of 5 x 10(-9) mol/L unlabeled noradrenaline or adrenaline then incubated with (3H)-noradrenaline and superfused. Electrical field stimulation with 180 pulses delivered at 1 or 3 Hz was used to induce overflow of radioactivity. Comparison of the effects of ...

journal_title：Journal of cardiovascular pharmacology

authors： Valenta B,Singer EA

更新日期：1991-02-01 00:00:00

abstract：:Pro-arrhythmia by noncardiac drugs has become an important safety concern in the pharmaceutical industry. The most common underlying mechanism for induction of arrhythmias by noncardiac drugs is off-target block of the native cardiac repolarizing current, I Kr. The pore-forming subunit of I Kr is encoded by the human ...

journal_title：Journal of cardiovascular pharmacology

authors： Margulis M,Sorota S

更新日期：2008-06-01 00:00:00

abstract：:Recently, a potent vasoconstrictor peptide, endothelin-1 (ET-1), was isolated from vascular endothelial cells. We investigated the inhibition of ET-1-induced contractions on isolated porcine coronary artery and rabbit aorta by calcium antagonists of the 1,4-dihydropyridine type. In addition, the vasoconstriction induc...

journal_title：Journal of cardiovascular pharmacology

authors： Stasch JP,Kazda S

更新日期：1989-01-01 00:00:00

abstract：:The present study was undertaken to investigate the interaction between endothelin-1 (ET-1) and norepinephrine (NE) on contractile regulation in dog ventricular myocardium. ET-1 alone did not elicit any inotropic response in isolated dog ventricular trabeculae (37 degrees C, 0.5 Hz). In the presence of NE at a high co...

journal_title：Journal of cardiovascular pharmacology

authors： Chu L,Endoh M

更新日期：2000-01-01 00:00:00

abstract：:The effects of various doses of creatine phosphate have been examined in a rat model of acute myocardial ischaemia. When given directly into the lumen of the left ventricle in pentobarbitone-anaesthetised male rats, creatine phosphate (50 and 100 mg/kg) markedly reduced the incidence of ventricular ectopic beats, and ...

journal_title：Journal of cardiovascular pharmacology

authors： Fagbemi O,Kane KA,Parratt JR

更新日期：1982-01-01 00:00:00

abstract：:To determine if combinations of mexiletine and sotalol retain Class I and III electrophysiologic actions, using standard microelectrode techniques, we examined the electrophysiologic effects on canine Purkinje fibers of solutions of mexiletine (3.1-100 microM), sotalol (3.1-400 microM), and combinations of the two dru...

journal_title：Journal of cardiovascular pharmacology

authors： Berman ND,Loukides JE

更新日期：1988-09-01 00:00:00

abstract：:Several studies were performed to evaluate the degree of inhibition of angiotensin-converting enzyme (ACE) by an ACE inhibitor by assessing the blood pressure response to a continuous i.v. infusion of increasing doses of angiotensin I in healthy volunteers. We assessed pharmacokinetic and pharmacodynamic interactions ...

journal_title：Journal of cardiovascular pharmacology

authors： Belz GG,Breithaupt K,Erb K

更新日期：1994-01-01 00:00:00

abstract：:Celiprolol is reported to be a new cardioselective beta blocker with novel ancillary properties including vasodilator effects. The purpose of this study was to investigate whether celiprolol possesses a direct vasodilatory effect on human vasculature in vivo and in vitro. We studied the in vivo effects of intra-arteri...

journal_title：Journal of cardiovascular pharmacology

authors： Hughes A,Martin G,Goldberg P,Thom S,Sever P

更新日期：1987-11-01 00:00:00

abstract：:We undertook a systematic comparison of the effects of diltiazem and nifedipine and a nonspecific vasodilator, sodium nitroprusside, on renal perfusion, function, and activation of potentially relevant neurohormonal systems in the anesthetized dog. These agents were employed to reduce blood pressure to two levels, a m...

journal_title：Journal of cardiovascular pharmacology

authors： Blackshear JL,Orlandi C,Williams GH,Hollenberg NK

更新日期：1986-01-01 00:00:00

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

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

更新日期：2009-11-01 00:00:00

abstract：:Felodipine, a dihydropyridine calcium antagonist, was used to treat eight patients with severe uncontrolled hypertension: five had essential hypertension, two had renovascular disease, and one chronic pyelonephritis. Mean blood pressure (BP) was 221 +/- 14/120 +/- 4 mm Hg despite treatment with three or more antihyper...

journal_title：Journal of cardiovascular pharmacology

authors： Herlitz H,Granérus G,Aurell M

更新日期：1990-01-01 00:00:00

abstract：:Amlodipine, a new long-acting dihydropyridine calcium antagonist, was compared with hydrochlorothiazie (HCTZ) in 145 patients with mild to moderate hypertension. After 4 weeks of single-blind placebo runin, patients were randomly allocated to receive amlodipine (2.5-10 mg once daily, n = 97) or HCTZ (25-100 mg once da...

journal_title：Journal of cardiovascular pharmacology

authors： Burris JF,Ames RP,Applegate WB,Ram CV,Davidov ME,Mroczek WJ

更新日期：1988-01-01 00:00:00

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

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

更新日期：1992-10-01 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

authors： Rossetti E,Fragasso G,Xuereb RG,Xuereb M,Margonato A,Chierchia SL

更新日期：1994-07-01 00:00:00

abstract：:The effects of a newly synthesized antiarrhythmic agent, TYB-3823 on the transmembrane action potential were examined in isolated papillary muscles of guinea pig. TYB-3823 (3 x 10(-6)-3 x 10(-5)M) caused a dose-dependent decrease in the maximum upstroke velocity (Vmax) and a shortening of action potential duration (AP...

journal_title：Journal of cardiovascular pharmacology

authors： Kodama I,Morimoto M,Toyama J,Shibata S

更新日期：1989-04-01 00:00:00

abstract：:21-Aminosteroids are a group of new synthetic compounds developed as antiperoxidants. Although several studies have demonstrated their cardioprotective properties in acute ischemic models, none has assessed their long-term benefits after chronic myocardial infarction. In this investigation, we examined the cardioprote...

journal_title：Journal of cardiovascular pharmacology

authors： Ngo PL,Chen H,Qi S,Paquette F,Dumont L

更新日期：1999-12-01 00:00:00

abstract：:In this study the effects of a new calcium entry blocking agent, 2,6-dimethyl-3-methoxycarbonyl-4-(2-nitrophenyl)-5-(2-furoyl)-1, 4-dihydropyridine (MDL 72567), were compared with those of nifedipine on blood pressure, heart rate, ECG, and cardiac contractility indices in conscious sinoaortic baroreceptor-denervated (...

journal_title：Journal of cardiovascular pharmacology

authors： Petty MA,Spedding M,Di Francesco GF

更新日期：1987-10-01 00:00:00

abstract：:We studied the acute intravenous (i.v.) effects of the antiarrhythmic agents ibutilide, sematilide, lidocaine, and encainide in a canine Y-shaped right atrial incision model of atrial flutter. After baseline determination of atrial effective refractory period (AERP), sustained atrial flutter (AFL) was initiated by atr...

journal_title：Journal of cardiovascular pharmacology

authors： Buchanan LV,Kabell G,Gibson JK

更新日期：1995-04-01 00:00:00

abstract：:This study determined whether flavin adenine dinucleotide (FAD) may elicit vasodilation in conscious rats via release of preformed endothelium-derived nitrosyl factors. Injections 1-6 (inj(1-6)) of FAD (2.5 micromol/kg, IV) elicited pronounced and equivalent vasodilator responses in saline-treated rats. Inj(1) of FAD ...

journal_title：Journal of cardiovascular pharmacology

authors： Hashmi-Hill MP,Sandock K,Bates JN,Robertson TP,Lewis SJ

更新日期：2007-08-01 00:00:00

abstract：:The effect of lidocaine on the conduction of extrasystoles was studied in 8 open-chest dogs after atrioventricular nodal block. Simultaneous recording of endocardial and epicardial activation provided separate measures of endocardial (Purkinje) conduction as well as myocardial (muscle) conduction. Lidocaine (1.25--10....

journal_title：Journal of cardiovascular pharmacology

authors： Carson DL,Dresel PE

更新日期：1981-09-01 00:00:00

abstract：:To establish a model of hypertension in marmosets, increasing doses of the immune-modulator cyclosporin (from 3 to 30 mg/kg/day) were given orally to marmosets for 31 days. Cyclosporin consistently induced hypertension with doses greater than or equal to 10 mg/kg/day. Time course and level of hypertension reached were...

journal_title：Journal of cardiovascular pharmacology

authors： Clozel JP,Fischli W

更新日期：1989-07-01 00:00:00

abstract：:Late sodium channel current (late INa) is considered to be an antiarrhythmic target. The prime antiarrhythmic mechanisms of late INa inhibition have been suggested to be (1) suppression of intracellular calcium [Cai]-mediated rhythmic activity (through reduction in Cai secondary to the decrease in intracellular sodium...

journal_title：Journal of cardiovascular pharmacology

authors： Burashnikov A

更新日期：2017-09-01 00:00:00

abstract：:Because the role of sodium channels in the initiation and maintenance of VF is not fully elucidated, we studied the significance of sodium channel activity in VF using sodium channel blockers. In nonischemic isolated feline hearts, the following electrophysiologic parameters were measured before and after application ...

journal_title：Journal of cardiovascular pharmacology

authors： Amitzur G,Schoels W,Visokovsky A,Lev-Ran V,Novikov I,Mueller M,Kraft P,Kaplinsky E,Eldar M

更新日期：2000-12-01 00:00:00

abstract：:Five-year morbidity and mortality in the Hypertension Detection and Follow-Up Program (HDFP) were stratified by age groups at entry to the study and by Stepped Care (SC) and Referred Care (RC) treatment groups. Although the incidence of stroke increased with age in both treatment groups, the greatest reduction in stro...

journal_title：Journal of cardiovascular pharmacology

authors： Maxwell MH,Ford CE

更新日期：1985-01-01 00:00:00

abstract：:The hypothesis that local release of prostanoids may contribute to the pharmacologic effect of nitroglycerin (NTG) has long been debated. Results of prostanoid blockade by indomethacin on NTG-induced effects, to date, have been inconclusive. To quantitate the effects of intravenous indomethacin on NTG-induced myocardi...

journal_title：Journal of cardiovascular pharmacology

authors： Bednarcyzk EM,Furniss SM,Green JA,Munger MA

更新日期：1997-12-01 00:00:00

abstract：:Twenty-four-hour urinary sodium excretion and plasma renin activity were monitored in 36 patients receiving bendrofluazide as sole antihypertensive therapy. There was no increase in urinary sodium output compared with pretreatment values during a 2-year period, and there is therefore no evidence that an increase in sa...

journal_title：Journal of cardiovascular pharmacology

authors： Swales JD,Bing RF,Swart S,Thurston H

更新日期：1984-01-01 00:00:00

abstract：:Endothelin-1 (ET-1) is a 21-residue peptide isolated from the conditioned medium of cultured porcine endothelial cells and is widely distributed throughout the body, with relatively high levels in the kidney and lung. In this study we examined the influence of thyroid hormone status on immunoreactive endothelin (ir-ET...

journal_title：Journal of cardiovascular pharmacology

authors： Lam HC,Wang JP,Lee JK,Ho LT,Han TM,Lu CC,Chiang HT,Cheng DL

更新日期：1993-01-01 00:00:00

abstract：:The beta-blocking activity of flestolol was established during increasing isoprenaline infusions and during graded physical exercise in conscious, chronically instrumented dogs. After a control cycle, flestolol was infused at three doses (1, 2.67, and 10 micrograms/kg/min). Flestolol has an extremely short half-life, ...

journal_title：Journal of cardiovascular pharmacology

authors： Grohs JG,Fischer G,Raberger G

更新日期：1990-02-01 00:00:00

abstract：:Experiments were designed to examine mechanisms of relaxations to nitric oxide (NO) in venous smooth muscle. Rings of canine femoral veins without endothelium were suspended for measurement of isometric force in organ chambers. Concentration-response curves to NO and 8-Br-cyclic guanosine monophosphate (cGMP) were obt...

journal_title：Journal of cardiovascular pharmacology

authors： Bracamonte MP,Burnett JC Jr,Miller VM

更新日期：1999-09-01 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

authors： Smits GJ,Perrone MH,Cox BF

更新日期：1997-01-01 00:00:00