Abstract:
:Bromocriptine, a dopamine (DA) receptor agonist, has been reported to have hypotensive effects in anesthetized and conscious normotensive rats but its mechanism of action is still not fully understood. Therefore, we studied the changes in mean arterial blood pressure (MAP) and heart rate (HR) elicited by an intravenous (i.v.) administration of bromocriptine (150 micrograms/kg), in either pentobarbital-anesthetized or conscious normotensive rats, pretreated with either i.v. (0.3 mg/kg) or intrathecal (i.t.) (93 nmol) domperidone, a DA receptor antagonist that does not cross the blood-brain barrier. In these preparations, i.v. administration of bromocriptine elicited dose-dependent decreases in MAP and rises in HR. The hypotensive effect was antagonized partially by i.t. and fully by i.v. domperidone. However, the latter compound did not modify the tachycardia, which could be blocked by propranolol (0.5 mg/kg i.v.). In rats pretreated with the latter beta-adrenoceptor antagonist, bromocriptine produced only a decrease in blood pressure that was inhibited by i.v. and i.t. domperidone. These results suggest that, in anesthetized and conscious normotensive rats, the hypotension induced by systemic administration of bromocriptine is fully mediated by DA2 dopamine receptors, which are located partly within the spinal cord and partly in the peripheral circulation.
journal_name
J Cardiovasc Pharmacoljournal_title
Journal of cardiovascular pharmacologyauthors
Lahlou S,Demenge Pdoi
10.1097/00005344-199109000-00003subject
Has Abstractpub_date
1991-09-01 00:00:00pages
317-25issue
3eissn
0160-2446issn
1533-4023journal_volume
18pub_type
杂志文章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
更新日期:1993-01-01 00:00:00
abstract::Imidazoline/guanidinium receptive sites (IGRS) are shown to be present in the subfornical organ and hypothalamic arcuate nucleus by a derivative of cirazoline, 2-(3-amino-4-[125I]iodophenoxy)methylimidazoline ([125I]AMIPI). Because many of the nonpeptide angiotensin II (Ang II) receptor antagonists contain imidazole r...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199609000-00012
更新日期:1996-09-01 00:00:00
abstract::As part of the Amlodipine Cardiovascular Community Trial (ACCT), which was a large multicenter study designed to assess the effects of the calcium channel blocker amlodipine besylate (Norvasc) as monotherapy for treatment of mild to moderate hypertension, we sought to determine the effects of amlodipine on regression ...
journal_title:Journal of cardiovascular pharmacology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1097/00005344-199509000-00018
更新日期:1995-09-01 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::Reviewed herein are data supporting the hypothesis that insulin and the sympathoadrenal system are involved in the pathogenesis of hypertension in the obese. Data from the Normative Aging Study, a population-based cohort followed in Boston, confirm other epidemiologic reports of a direct relationship between upper-bod...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:
更新日期:1994-01-01 00:00:00
abstract::A sodium/calcium exchange mechanism that mediates both Ca2+ exit and Ca2+ entry is present in the sarcolemma of most types of muscle including mammalian cardiac muscle and vascular smooth muscle (VSM). The rate and direction of Ca2+ transport mediated by the exchanger are normally regulated primarily by: (a) the intra...
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::Large controlled trials have shown that intake of fish oil (marine n-3 fatty acids, eicosapentaenoic acid, and docosahexaenoic acid), whether from dietary sources or fish oil supplements, may exhibit beneficial effects on total and cardiovascular disease mortality. Stabilization of cell membranes and suppression of ca...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:10.1097/FJC.0b013e3181af6c56
更新日期:2009-11-01 00:00:00
abstract::Severe pulmonary arterial hypertension (PAH) is characterized by clustered proliferation of endothelial cells (ECs) in the lumina of small size pulmonary arteries resulting in concentric obliteration of the lumina and formation of complex vascular structures known as plexiform lesions. This debilitating disease occurs...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:10.1097/FJC.0b013e3181f9ea8d
更新日期:2010-12-01 00:00:00
abstract::Toll-like receptors (TLRs) are important in innate immune responses, which are crucial in collateral artery formation (arteriogenesis). TLR4⁻/⁻ mice undergoing hind limb ischemia show decreased perfusion recovery accompanied by an impaired infiltration of inflammatory cells. TLR antagonists are currently developed and...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/FJC.0000000000000019
更新日期:2014-01-01 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::Kinins elicit prostaglandin and inositol phosphate production in 3T3 fibroblasts through stimulation of B2 receptors. Prostaglandin synthesis is maximum by 5 min, whereas inositol phosphate production continues for longer than 30 min. Prostaglandin synthesis is stimulated by phospholipase A2, which releases arachidona...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:
更新日期:1990-01-01 00:00:00
abstract::The elimination of an acute oral saline load is markedly blunted in adult Sabra hypertension-prone (SBH) rats compared with hypertension-resistant Sabra normotensive (SBN) rats. Within 2 h, urinary output and the excretion of sodium and potassium are significantly reduced, while urine osmolality is markedly elevated i...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:
更新日期:1987-01-01 00:00:00
abstract::Long-term effects of antihypertensive treatment on various electrocardiogram (ECG) voltages and the association between ECG findings at randomization and subsequent mortality were evaluated in the double-blind, placebo-controlled trial of elderly hypertensive patients, conducted by the European Working Party on High B...
journal_title:Journal of cardiovascular pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00005344-199117002-00020
更新日期:1991-01-01 00:00:00
abstract::Loop diuretics could adversely influence prognosis due to activation of neurohumoral mechanism in the long term. Previous study showed torasemide, a loop diuretic with anti-aldosteronergic properties, was associated with lower mortality in patients with chronic heart failure (CHF). We evaluated the effects of torasemi...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1097/FJC.0b013e3181a717f7
更新日期:2009-06-01 00:00:00
abstract::Fourteen women with hypertension of pregnancy and who were in their last trimester were subjected to three standardized physical stress tests before and after 1-2 weeks of treatment with 5 mg of isradipine twice daily. Their blood pressure and heart rate responses to the isometric handgrip exercise, the cold pressor t...
journal_title:Journal of cardiovascular pharmacology
pub_type: 临床试验,杂志文章
doi:
更新日期:1992-01-01 00:00:00
abstract::Primary pulmonary hypertension continues to be a fatal disease. We have recently demonstrated that long-term inhibition of Rho-kinase, an effector of the small GTPase Rho, is effective for the treatment of pulmonary hypertension (PH) in rats and humans. Prostacyclin has been clinically used for the treatment of PH wit...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/01.fjc.0000151898.65260.6a
更新日期:2005-02-01 00:00:00
abstract::Cardiotrophin-1 (CT-1) a novel IL-6-related cytokine, induces distinct hypertrophic responses to endothelin-1 (ET-1) on cultured neonatal rat cardiac myocytes. We found that ET-1 and CT-1 show a distinct pattern of gene induction of natriuretic peptides. Elucidation of the transcriptional mechanisms of brain natriuret...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199800001-00099
更新日期:1998-01-01 00:00:00
abstract::Acute myocardial infarction (AMI) is known to alter the pharmacokinetics of several antiarrhythmic agents. To study the effects of AMI on the kinetics of mexiletine (MEX), a single intravenous dose of 200 mg MEX HCl was infused over 30 min in 11 patients with AMI. The study was performed within 24 h of the onset of pa...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:
更新日期:1984-01-01 00:00:00
abstract::Atherosclerosis is an inflammatory response to accumulation of cholesterol in the artery wall. Low-density lipoproteins (LDL) accumulate and are oxidized to proinflammatory compounds in the arterial intima during hypercholesterolemia, leading to activation of endothelial cells, macrophages, and T cells. We sought to d...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/FJC.0b013e318032aa11
更新日期:2007-04-01 00:00:00
abstract::The electrophysiologic effects of the metabolites of verapamil are unknown and may contribute to the observed differences between intravenous and oral verapamil. We examined the electrophysiologic effects of verapamil and its metabolites (norverapamil, N-dealkylverapamil (D617), and N-dealkylnorverapamil (D620)) at es...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199105000-00020
更新日期:1991-05-01 00:00:00
abstract::Acute occlusion of a coronary artery can result in myocardial infarction-a leading cause of premature death. Prompt restoration of blood flow to the myocardium can prevent excessive death of cardiomyocytes and improve clinical outcome. Although the major mechanism of cell death after reperfusion is necrosis, it is now...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:10.1097/FJC.0000000000000694
更新日期:2019-09-01 00:00:00
abstract::To investigate the epidemiological relationship of dietary factors to blood pressure (BP) and major cardiovascular diseases, we carried out the International Cooperative Cardiovascular Diseases and Alimentary Comparison (CARDIAC) Study, which so far involves 45 centers in 20 countries. From each population, 100 men an...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:
更新日期:1990-01-01 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::The vascular effects of cardamonin and alpinetin from Alpinia henryi K. Schum. were examined in the rat isolated mesenteric arteries. 1H and 13C nuclear magnetic resonance spectra showed that cardamonin is present in trans-form, and single-crystal radiographic structure revealed that alpinetin is present in S configur...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-200105000-00011
更新日期:2001-05-01 00:00:00
abstract::Hyperhomocysteinemia is a risk factor for atherosclerosis, and is found in the heterozygous form in approximately one-third of all individuals with coronary artery disease. The sulfhydryl group of homocysteine has been viewed as contributing to the atherogenic effects of this low-molecular-weight thiol, largely as a c...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199204002-00057
更新日期:1992-01-01 00:00:00
abstract::Beraprost sodium is a stable analog of the vasodilator, platelet antiaggregatory eicosanoid, prostacyclin. Experiments were performed to determine whether long-term therapy with beraprost produces vascular protective effects in saline-drinking stroke-prone spontaneously hypertensive rats (SHRSPs). Oral beraprost at 30...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199709000-00003
更新日期:1997-09-01 00:00:00
abstract::Cilnidipine has a blocking action against N-type calcium channels as well as L-type calcium channels. We studied the effect of morning and bedtime dosing on circadian variation of blood pressure (BP), heart rate (HR), and activity of the autonomic nervous system, using an open randomized crossover study in 13 essentia...
journal_title:Journal of cardiovascular pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00005344-200401000-00011
更新日期:2004-01-01 00:00:00
abstract::We examined the effects of NIP-121, a potassium channel opener, on KCl- and norepinephrine (NE)-induced contraction, the phasic-contraction under the Ca(2+)-free condition and cytosolic free-Ca2+ mobilization using isolated rat aorta. NIP-121 as well as cromakalim inhibited, in the KCl- and NE-contractions concentrati...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:
更新日期:1994-12-01 00:00:00
abstract::Irisin, a muscle-origin protein derived from the extracellular domain of the fibronectin domain-containing 5 protein (FNDC5), has been shown to modulate mitochondria welfare through paracrine action. Here, we test the hypothesis that irisin contributes to cardioprotection after myocardial infarction by preserving mito...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/FJC.0000000000000608
更新日期:2018-12-01 00:00:00
abstract::The effects of divalent cations on human platelet vasopressin receptor binding characteristics and effects of receptor occupancy on endogenous protein phosphorylation were investigated. Binding of vasopressin to its receptor is modulated by both the nature and the concentration of ions. Whatever the cation present, gu...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198707000-00004
更新日期:1987-07-01 00:00:00