Abstract:
:We used strips of human pulmonary arteries from patients undergoing surgery for lung tumor to investigate whether or not this human tissue (like that of the rabbit) is endowed with inhibitory presynaptic alpha 2-adrenoceptors. The strips were incubated with [3H]noradrenaline and subsequently superfused with physiological salt solution containing cocaine, corticosterone, and propranolol. The electrically (2 Hz) evoked overflow of tritium consisted of 89% unmetabolized [3H]noradrenaline and was abolished by tetrodotoxin or omission of Ca2+ from the superfusion fluid. Unlabeled noradrenaline, adrenaline, and the preferential alpha 2-adrenoceptor agonists B-HT 920, alpha-methylnoradrenaline, and clonidine concentration dependently inhibited the evoked overflow (maximum effect of clonidine lower than that of the other compounds): the alpha 1-selective agonist methoxamine was ineffective. The alpha 2-adrenoceptor antagonists BDF 6143 and rauwolscine facilitated the evoked overflow; the alpha 1-selective antagonist prazosin was ineffective. The concentration-response curve of B-HT 920 for its inhibitory effect on evoked overflow was shifted to the right by rauwolscine. It is concluded that the sympathetic nerve fibres of the human pulmonary artery possess presynaptic alpha 2-adrenoceptors. Stimulation-evoked release of noradrenaline is inhibited by activation and facilitated by blockade of these receptors.
journal_name
J Cardiovasc Pharmacoljournal_title
Journal of cardiovascular pharmacologyauthors
Hentrich F,Göthert M,Greschuchna Ddoi
10.1097/00005344-198605000-00016subject
Has Abstractpub_date
1986-05-01 00:00:00pages
539-44issue
3eissn
0160-2446issn
1533-4023journal_volume
8pub_type
杂志文章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 rele...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199008000-00010
更新日期:1990-08-01 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::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 majority of deaths attributable to hypertension are coronary artery disease (CAD) deaths and, consequently, the prevention of CAD should be the primary aim of hypertension management. Recent meta-analyses confirm the results of the individual hypertension intervention trials, which demonstrated a disappointing sho...
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::Nitrendipine, a calcium entry blocker, was administered by gavage (3 mg/100 g body weight/day) to rats with prolonged angiotensin-II-(AII) induced hypertension. AII was infused by osmotic minipump implanted subcutaneously. Persistent hypertension was established after 5 days. Normotensive control rats had empty sham p...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:
更新日期:1984-01-01 00:00:00
abstract::The relationship between sodium sensitivity and borderline hypertension was explored in 63 subjects. Thirty percent of those with borderline hypertension and 15% of normal subjects increased mean arterial pressure by more than 5% when daily sodium intake was increased from 10 to 200 mEq. While most displayed an increa...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198608005-00006
更新日期:1986-01-01 00:00:00
abstract::Left coronary artery ligations or sham operations were performed on pentobarbitone-anesthetized rats. The rats were sacrificed at various times after artery occlusion or sham operation and the creatine kinase (CK), potassium (K+), and noradrenaline (NA) content was determined in the left and right ventricular myocardi...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:
更新日期:1981-07-01 00:00:00
abstract::Reperfusion of ischemic myocardium is accompanied by intracellular Ca overload, leading to cardiac dysfunction. However, the mechanisms underlying intracellular Ca overload have yet to be fully elucidated. The mechanism may involve the activation of store-operated Ca entry, which is primarily mediated through the tran...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/FJC.0000000000000566
更新日期:2018-04-01 00:00:00
abstract::The aim of this study was to compare the effects of the angiotensin-converting enzyme (ACE) inhibitor perindopril and the angiotensin II antagonist losartan on insulin sensitivity and plasma fibrinogen in overweight hypertensive patients. Twenty-eight overweight mild to moderate [diastolic blood pressure (DBP) >90 and...
journal_title:Journal of cardiovascular pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00005344-199810000-00014
更新日期:1998-10-01 00:00:00
abstract::Several mechanisms have been suggested for the absence of reflex tachycardia in response to the hypotensive effect of the selective alpha 1-adrenoceptor antagonist indoramin, including, in animals, membrane-stabilising activity, prolongation of repolarisation time, and reduction in baroreflex sensitivity. The present ...
journal_title:Journal of cardiovascular pharmacology
pub_type: 临床试验,杂志文章
doi:10.1097/00005344-198803000-00004
更新日期:1988-03-01 00:00:00
abstract::This study evaluated the 24-h antihypertensive effect of single daily doses of celiprolol, a beta-1 adrenoceptor antagonist. Patients with supine diastolic BP between 95 and 114 mm Hg started on placebo or celiprolol 200 mg daily for 2 weeks; non-responders received 400 mg daily for 2 weeks and then 600 mg daily for a...
journal_title:Journal of cardiovascular pharmacology
pub_type: 临床试验,杂志文章
doi:10.1097/00005344-198608004-00027
更新日期:1986-01-01 00:00:00
abstract::alpha-Adrenoceptor agonists and antagonists are widely used perioperatively for internal mammary artery (IMA)-coronary artery bypass operations. To determine subtypes of alpha-adrenoceptors in the human IMA, we studied responses of isolated human IMA segments to alpha-adrenoceptor agonists, antagonists, and electrical...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:
更新日期:1993-02-01 00:00:00
abstract::The objective of this study was to characterize angiotensin II (AII) receptors in cerebral capillary endothelium and to examine whether the first step in AII responsiveness, namely AII receptor binding, is aberrant in cerebral microvessels obtained from adult spontaneously hypertensive rats (SHR). The binding of [3H]a...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198902000-00008
更新日期:1989-02-01 00:00:00
abstract::In view of recent findings on the anatomic heterogeneity of rapid vasodilation via estrogen receptor (ER)-dependent mechanisms, it is obvious that with regard to human physiology and disease much of it is still unknown, and research in this area is urgently needed. This is also important because chronic drug therapy w...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:10.1097/FJC.0b013e31829709d4
更新日期:2013-07-01 00:00:00
abstract::The renin-angiotensin system affects blood pressure and regional blood flow through endocrine, paracrine, and autocrine influences. The circulating endocrine renin-angiotensin system (RAS) is activated for acute cardiovascular homeostasis. The recent demonstration of a local renin-angiotensin system in the blood vesse...
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::Endothelial cells can release both relaxing and contracting factors. Since the release of endothelium-dependent relaxing factor is prevented by incubation in Ca2+-free solution and can be triggered by the Ca2+ ionophore A 23187, it must require an increase in cytoplasmic Ca2+ concentration in the endothelial cells. Ca...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:10.1097/00005344-198812006-00007
更新日期:1988-01-01 00:00:00
abstract::The effect of intrathecal administration of neuropeptide Y (NPY), NPY COOH-terminal fragments as well as an NPY Y1 receptor ligand on arterial blood pressure (ABP) of anesthetized rat was studied. NPY and all NPY COOH-terminal fragments tested (NPY11-36, NPY14-36 and NPY18-36), believed to act through Y2 receptors pro...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199305000-00005
更新日期:1993-05-01 00:00:00
abstract::The purpose of this study was to investigate the mechanisms involved in the angiotensin II-induced increase in the contractile response of the hypertensive wall after prolonged incubation in the organ-bath buffer. In 5-h incubated rings, the contractile response to angiotensin II in aortic rings with endothelium from ...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199804000-00009
更新日期:1998-04-01 00:00:00
abstract::Previous reports have suggested that the posterior hypothalamic adenosine A2 receptors may play a role in central cardiovascular regulation. In this study, we examined the influence of posterior hypothalamic adenosine A2B receptors on the regulation of blood pressure and heart rate. Drugs were injected into the poster...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/FJC.0b013e318198ca6b
更新日期:2009-02-01 00:00:00
abstract::Ischemia was induced by lowering the afterload pressure of the perfused working rat heart, and continued until the heart was reperfused by raising the after load. After ischemia, the following changes were observed: decreases in the pressure-rate product (peak aortic pressure X heart rate) and coronary flow; depletion...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-198309000-00007
更新日期:1983-09-01 00:00:00
abstract::Endothelin (ET) may play an important role in the pathogenesis of vasoconstriction and acute renal failure after aortic cross-clamping (ACC). However, the relative contribution of the ET(A) and ET(B) receptors to the physiopathology of ischemic acute renal failure is poorly understood. This study was carried out to ev...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199908000-00004
更新日期:1999-08-01 00:00:00
abstract::Coronary arteries from animals on normal diets (ND) exhibit well-maintained responses to dilators under ischemic conditions. The reported altered metabolic requirements and K+-currents in blood vessels from hypercholesterolemic animals fed high-fat diets (HF) led us to hypothesize that under metabolically depressed co...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-200404000-00004
更新日期:2004-04-01 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 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:
更新日期:1988-02-01 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::Autoradiographical images of whole body sections from control mice (29 +/- 3 days old) revealed high ETA densities within the cardiovascular system, with ETB receptors predominating in the kidney. A similar distribution of ETA receptors was found in ETB-deficient mice (25 +/- 2 days old) but the density was reduced in...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/01.fjc.0000166284.08657.64
更新日期:2004-11-01 00:00:00
abstract::Angiotensin-converting enzyme (ACE) inhibitors are widely used for treatment of heart failure after myocardial infarction (MI). The beneficial effects consist of a combination of hemodynamic effects and interference with cardiac structural alterations. These effects are believed to depend on inhibition of angiotensin ...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:
更新日期:1992-01-01 00:00:00
abstract::Alterations in the function and structure of the blood vessel wall account for most clinical events in the coronary and cerebrovascular circulation such as myocardial infarction and stroke. Cardiovascular drugs may exert beneficial effects on the vascular wall both at the level of the endothelium and vascular smooth m...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章,评审
doi:10.1097/00005344-200112003-00002
更新日期:2001-12-01 00:00:00
abstract::Isolated perfused rat kidney was used to examine the possible mechanisms involved in the hypotensive/vasodilator actions of cryptolepine. In kidneys preconstricted by phenylephrine (PE 5-7.5 x 10(-7) M), cryptolepine at bolus doses of 2.5, 5, and 10 micrograms elicited dose-dependent reductions in perfusion pressure b...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:10.1097/00005344-199404000-00012
更新日期:1994-04-01 00:00:00
abstract::The in vivo renal microvascular effects of three antihypertensive drugs: nitrendipine, a calcium entry blocker, and two direct-acting vasodilator agents, hydralazine and minoxidil, were compared. The dilator responses of pre- and postglomerular vessels were directly observed after the topical or intravenous administra...
journal_title:Journal of cardiovascular pharmacology
pub_type: 杂志文章
doi:
更新日期:1987-01-01 00:00:00