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 of treatment in which the dose was titrated against the blood pressure. Pharmacokinetic data were collected at baseline, 4 weeks, and 1 year. Mean peak concentrations of ramiprilat (the active diacid) were 11.5 ng/ml acutely, 18.5 ng/ml at 1 month, and 31.3 ng/ml at 1 year, and these were all statistically significantly different. Mean half-lives of ramiprilat were 5.5 h acutely, 5.2 h at 1 month, and 4.6 h at 1 year, and these were not statistically significantly different. Mean areas under the curve excluding the component for saturable binding were 106.8 ng/h/ml acutely, 115.7 ng/h/ml at 1 month, and 248 ng/h/ml at 1 year; the latter was statistically significantly different from the earlier readings. There is no evidence from this study that the pharmacokinetics change in any clinically relevant way.
journal_name
J Cardiovasc Pharmacoljournal_title
Journal of cardiovascular pharmacologyauthors
Hosie J,Meredith Psubject
Has Abstractpub_date
1991-01-01 00:00:00pages
S125-7eissn
0160-2446issn
1533-4023journal_volume
18 Suppl 2pub_type
杂志文章abstract::The effects of the calcium channel blocker, diltiazem hydrochloride (DZ), on conscious, resting spontaneously hypertensive rats (SHR) were evaluated and compared with results from parallel studies on Wistar-Kyoto (WKY) controls. DZ was administered as a continuous, cumulative infusion at rates equal to 0.40, 2.00, and...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198603000-00004
更新日期:1986-03-01 00:00:00
abstract::Several antiarrhythmic agents with Na-channel blocking action have been shown to inhibit cardiac K(ATP) channels. We used cibenzoline to examine its precise target site using patch-clamp techniques and receptor binding assays in guinea-pig ventricular myocytes. Exposure of myocytes to a glucose-free perfusate containi...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-200003000-00014
更新日期:2000-03-01 00:00:00
abstract::Defibrillation strength shocks delivered within an action potential (AP) delay repolarization. Shock-induced AP duration extension (APDE) may prolong refractoriness and terminate or prevent reinitiation of reentry, favoring defibrillation. This study examined LY-190147 (LY) effects on defibrillation threshold (DFT) in...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199602000-00007
更新日期:1996-02-01 00:00:00
abstract::We wished to determine the action of prostaglandins (PG) and to analyze pharmacologically the mechanisms of their action in isolated human uterine arteries in special reference to mediators liberated from the endothelium and subendothelial tissues. Helical strips of the human uterine artery with and without the endoth...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199508000-00021
更新日期:1995-08-01 00:00:00
abstract::The short half-life, low plasma concentrations, and extensive biotransformation of prazosin suggest that it might be subject to extensive first-pass metabolism. Bioavailability, disposition, and hepatic extraction were studied in the dog. In conscious dogs whole blood prazosin concentrations were measured after oral a...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-197911000-00005
更新日期:1979-11-01 00:00:00
abstract::Several 3,5-pyridinedicarboxylic acid [4-(2,3-dichlorophenyl)-1,4-dihydro-2,6-dimethyl-] esters, which are analogs to felodipine, were synthesized and tested for peroral activity and vascular selectivity. Structure-activity relationships demonstrate that felodipine has biological properties (selectivity and oral activ...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198710001-00011
更新日期:1987-01-01 00:00:00
abstract::We determined involvement of nitric oxide (NO) derived from perivascular nerve in venous relaxation. In helical strips of dog superficial temporal veins contracted with prostaglandin F2 alpha (PGF2 alpha) nicotine produced a contraction, which was reversed to a relaxation by prazosin. The relaxation was partially atte...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199505000-00009
更新日期:1995-05-01 00:00:00
abstract::The maximal increases in heart rate produced by intravenous xamoterol in anaesthetized cats and rats are less than that of (-)-isoprenaline. In cats, blood pressure was slightly raised, while in rats, supramaximal cardiac-stimulant doses produced reductions in blood pressure. In anaesthetized guinea pigs, cardiac-stim...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198603000-00014
更新日期:1986-03-01 00:00:00
abstract::The cardioprotective effects on myocardial ischemia of the sarcoplasmic reticulum (SR) Ca2+-ATPase (SERCA) inhibitor, cyclopiazonic acid (CPA), were studied. We used the isolated arterially perfused interventricular septum of the rabbit heart submitted to 30-min global ischemia/30-min reperfusion. Mechanical [maximal ...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199811000-00022
更新日期:1998-11-01 00:00:00
abstract::We previously reported on the development of a pathway-selective estrogen receptor (ER) ligand, WAY-169916, that has ER-dependent antiinflammatory activity and is devoid of classic ER transcriptional activity. In the current study, WAY-169916 and 17beta-estradiol (17beta-E2) were evaluated for protective activity in m...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/01.fjc.0000211793.60528.f7
更新日期:2006-06-01 00:00:00
abstract::The cardiovascular profile of a novel calcium antagonist, MPC-1304 and its active metabolites were investigated in experimental animals in vitro and in vivo, and were compared with those of other calcium antagonists or nitroglycerin (NTG). The ratio of negative chronotropic/negative inotropic effect of MPC-1304 was 23...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199307000-00025
更新日期:1993-07-01 00:00:00
abstract::Possible enhancement by free fatty acids (FFA) of the arrhythmogenic actions of ouabain was studied in rabbits. The mean dose of ouabain required for inducing ventricular tachycardia or fibrillation in conscious animals was significantly lowered by intravenous injection of 5 ml of a 20% fat emulsion (Lipofundin), whic...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198005000-00010
更新日期:1980-01-01 00:00:00
abstract::We examined the involvement of the oxidative stress in high glucose-induced suppression of human aortic endothelial cell proliferation. Chronic glucose treatment for 72 h concentration-dependently (5.6-22.2 mol/l) inhibited human coronary endothelial cell proliferation. Temocaprilat, an angiotensin-converting enzyme i...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-200312001-00013
更新日期:2003-12-01 00:00:00
abstract::Diabetes mellitus is associated with significant morbidity and mortality caused by the micro- and macro-vascular complications that all too frequently develop during the lifetime of the diabetic patient. In attempts to treat the complications of diabetes, several different treatment strategies have been investigated. ...
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::Vasoconstrictor responses to intraluminal and extraluminal 5-hydroxytryptamine (5-HT) were studied in isolated mesenteric resistance arteries of Wistar-Kyoto (WKY) rats and spontaneously hypertensive rats (SHRs). Third-order branches of mesenteric arteries were dissected free and mounted on glass cannulae in organ cha...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199108000-00015
更新日期:1991-08-01 00:00:00
abstract::Cardiovascular responsiveness to stress conditions differs between men and women. It is not known to what extent this observation is explained by differences in the release of stress hormones like adrenaline, or by differences in the response to adrenaline. Therefore, we quantified the hemodynamic response to infusion...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/01.fjc.0000198519.28674.cc
更新日期:2006-01-01 00:00:00
abstract::Warfarin international normalized ratio (INR)-related phenotypes such as the percentage of INR time in the therapeutic range (PTTR) and INR variability are associated with warfarin adverse reactions. However, INR-related phenotypes greatly vary among patients, and the underlying mechanism remains unclear. As a key cof...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/FJC.0000000000000834
更新日期:2020-07-01 00:00:00
abstract::The vasoactive effects of calcium antagonist drugs were compared using a multi-organ functional imaging technique with thallium-201 (Tl-201). Four drugs were tested at two different doses: nifedipine (10 and 25 micrograms/kg), verapamil (100 and 250 micrograms/kg), diltiazem (100 and 250 micrograms/kg), and bepridil (...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198311000-00010
更新日期:1983-11-01 00:00:00
abstract::The terminal phases of volume-overload heart failure are characterised by eccentric ventricular hypertrophy. Relatively little attention has been directed to exploring the mechanisms involved in this development. The increase in diastolic wall stress leads to replication of the sarcomeres in series. The hypertrophied ...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:
更新日期:1987-01-01 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::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::Dietary omega-3 polyunsaturated fatty acids (PUFAs) are readily incorporated into heart and skeletal muscle membranes where, in the heart, animal studies show they reduce O2 consumption. To test the hypothesis that omega-3 PUFAs alter O2 efficiency in humans, the effects of fish oil (FO) supplementation on O2 consumpt...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1097/FJC.0b013e3181911913
更新日期:2008-12-01 00:00:00
abstract::Depression of myocardial contractility by muscarinic agonists is dependent on underlying beta-adrenergic tone. The negative inotropic effect of muscarinic agonists is enhanced by previous beta-adrenergic stimulation, an action that has been termed accentuated antagonism. We wished to determine whether accentuated anta...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199512000-00002
更新日期:1995-12-01 00:00:00
abstract::Carvedilol is a dual-acting drug designed to produce two complementary effects: beta-blockade and vasodilation. These effects are induced in the same dose range, a prerequisite for utilizing both properties in an appropriate manner. The vasodilation is mediated predominantly by specific alpha 1-adrenoceptor blockade. ...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:10.1097/00005344-199219001-00003
更新日期:1992-01-01 00:00:00
abstract::Endothelin-1[1-31] is a recently discovered member of the endothelin family with vasoactive properties in several animal models and in man in vivo. It is generated from big endothelin-1 by human mast cell chymase and may be a novel intermediary peptide in the production of endothelin-1[1-21]. Given that both big endot...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/01.fjc.0000166233.11336.67
更新日期:2004-11-01 00:00:00
abstract::Using the radioactive microsphere technique, we studied the acute systemic and regional hemodynamic effects of felodipine (10, 30, and 100 nmol/kg, i.v.) in conscious renal hypertensive rabbits. A dose-dependent decrease in arterial blood pressure was observed after felodipine administration, accompanied by tachycardi...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198407000-00025
更新日期:1984-07-01 00:00:00
abstract::In this study we compared the antithrombotic and anticoagulant properties of sodium and calcium derivatives of pentosan polysulfate (Na-PPS, Ca-PPS), unfractionated heparin (UFH), and low-molecular-weight heparin (Fraxiparin). The antithrombotic effects of these agents have been investigated in an experimental thrombo...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199909000-00004
更新日期:1999-09-01 00:00:00
abstract::Qiliqiangxin (QL), a traditional Chinese medicine, has been used in the treatment of chronic heart failure. However, whether QL can benefit cardiac remodeling in the hypertensive state is unknown. We here examined the effects of QL on the development of cardiac hypertrophy through comparing those of losartan in C57BL/...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/FJC.0b013e31823f888f
更新日期:2012-03-01 00:00:00
abstract::The peptide vasoconstrictors angiotensin II (Ang II) and endothelin-1 (ET-1), originally thought to derive exclusively from the plasma renin-angiotensin system and vascular endothelium, respectively, have been demonstrated to be produced independently of such sources. Local tissue angiotensin-generating systems are we...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:10.1097/00005344-199322005-00007
更新日期:1993-01-01 00:00:00
abstract::The majority of patients with implanted cardioverter defibrillators (ICD) require antiarrhythmic (AR) drugs. ARs may increase defibrillation energy requirements. This study investigated the effects of lidocaine, ajmaline, and diltiazem on ventricular defibrillation energy needs. In 24 isolated rabbit hearts, the 50 an...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199704000-00001
更新日期:1997-04-01 00:00:00