Abstract：
:In this study the contribution of alternating architecture and Ca2+ handling of mitochondria to cytosolic Ca2+ homeostasis was elucidated under normoglycemic and hyperglycemic (HGC) conditions in the human endothelial cell line EA.hy926. Exposure of endothelial cells to hyperglycemic medium elevated basal cytosolic free Ca2+ concentration ([Ca2+]cyto), the histamine-initiated cytosolic Ca2+ signaling, and the mitochondrial Ca2+ content after cell stimulation. The latter was possibly due to the prolonged mitochondrial Ca2+ elevation in response to agonists found in HGC-pretreated cells. Moreover, under HGC mitochondrial free radical production was increased and mitochondrial shape changed from a mainly tubular, highly interconnected network toward multiple, isolated singular structures. Such changes could not be correlated with HGC-induced alterations of cytosolic Ca2+ signaling that became normalized with antimycin A, an inhibitor of the respiratory chain. These data suggest that although mitochondrial structure changes considerably during HGC, alterations in cytosolic Ca2+ signaling are more likely due to the enhanced energy status/metabolism of the mitochondria. On the other hand, in normoglycemic cells of unforced fragmentation of mitochondria yielded elevated basal [Ca2+]cyto, while the global Ca2+ signaling in response to histamine remained unchanged. Thus, mitochondrial architecture (ie, tubular versus fragmented structure) per se does not have a detectable impact on agonist-initiated global cytosolic Ca2+ signaling, while this organelle represents an early target in hyperglycemia leading to alterations in cytosolic Ca2+ signaling.
journal_name
J Cardiovasc Pharmacoljournal_title
Journal of cardiovascular pharmacologyauthors
Paltauf-Doburzynska J,Malli R,Graier WFdoi
10.1097/01.fjc.0000139449.64337.1bsubject
Has Abstractpub_date
2004-10-01 00:00:00pages
423-36issue
4eissn
0160-2446issn
1533-4023pii
00005344-200410000-00003journal_volume
44pub_type
杂志文章abstract：:Essential hypertension is now considered a disease of pressure regulation implicating a multiplicity of physiological mechanisms. It is probably genetically predisposed and is associated with altered sensitivity to the sodium ion and a more than chance association with other clinical diseases. New concepts are emergin...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：
更新日期：1984-01-01 00:00:00
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 ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：1991-01-01 00:00:00
abstract：:Calcium is a signaling element of general importance to cells. In muscle, its key function is the activation of troponin C, which is essential for the contraction of myofibrils in skeletal and heart muscles, and of myosin light chain kinase, which is essential for the contraction of smooth muscles. Calcium modulates t...
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：:Angiotensin II receptor blockers (ARBs) are used for the treatment of patients with heart failure and hypertension. Yet their safety has been questioned by some who observed delayed cardiac healing and scar thinning after myocardial infarction (MI). To clarify potential efficacy and safety of ARBs, we administered Azi...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/FJC.0b013e318288a6d7
更新日期：2013-05-01 00:00:00
abstract：:We examined the effects of prolonged oral administration of oxprenolol (twice daily for 6 weeks) to male Sprague-Dawley rats. At two times (1 or 16-18 h) after the last oral dose, the rats were anaesthetised and subjected to acute coronary artery ligation, and the severity of the resulting arrhythmias was assessed. Is...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-198405000-00001
更新日期：1984-05-01 00:00:00
abstract：:The functional and anatomical abnormalities of the right ventricle may occur in hypertensive patients with left ventricular hypertrophy (LVH). The present study was designed to assess the functional and structural changes in both left and right ventricles induced by chronic antihypertensive therapy. Doppler and standa...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199117002-00039
更新日期：1991-01-01 00:00:00
abstract：:After stroke-prone spontaneously hypertensive rats (SHRSP) received a salt-loaded diet to accelerate onset of stroke, the therapeutic effect of clentiazem, a benzothiazepine Ca antagonist, on neurologic and histologic disorders was examined. Treatment with clentiazem (3, 15, and 30 mg/kg) orally twice daily (b.i.d.) f...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199401000-00023
更新日期：1994-01-01 00:00:00
abstract：:The formation of bone occurs via a series of events that are regulated by various hormones and cytokines. We previously reported that endothelin (ET) inhibits the mineralization by osteoblastic cells and natriuretic peptide (NP) promotes osteoblastic differentiation. Therefore, we attempted to identify the genes induc...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200036051-00084
更新日期：2000-11-01 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：:It has been suggested that isosorbide dinitrate (ISDN)-induced venodilation could be ascribed to preferential accumulation of the agent in venous tissues, resulting in higher concentrations of nitric oxide (NO). Here, the authors investigated whether the venodilating effect of ISDN is associated with a preferential in...
journal_title：Journal of cardiovascular pharmacology
pub_type： 临床试验,杂志文章
doi：10.1097/00005344-200301000-00006
更新日期：2003-01-01 00:00:00
abstract：:Coronary artery disease (CAD) is the major cause of death in hypertensive patients in Western populations and further efforts are required to determine how best to reduce its incidence. Large-scale placebo-controlled trials of blood pressure reduction could resolve the uncertainty about the effects of antihypertensive...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：
更新日期：1990-01-01 00:00:00
abstract：:In conscious rats, intrathecal (i.t.) administration of norepinephrine (NE) produced pressor responses, whereas i.t. epinephrine (Epi) caused depressor responses at low doses (0.1-1 microgram) and pressor responses at a higher dose (10 micrograms). Epi administered i.t. produced bradycardia; however, NE caused tachyca...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199209000-00005
更新日期：1992-09-01 00:00:00
abstract：:Endothelium-derived relaxing factors (EDRFs) and prostacyclin (PGI2) released from endothelial cells are potent vasodilators; endothelin-1 and thromboxane A2 may be their physiological antagonists. Interactions between these vasodilators and vasoconstrictors were studied in isolated intramyocardial porcine coronary ar...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-199107000-00016
更新日期：1991-07-01 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：:This article presents selected aspects of the presynaptic modulation of noradrenaline release from the heart. Several presynaptic effector systems that mediate either inhibition or facilitation of noradrenaline release are discussed. In particular, the potencies of muscarinic agonists and antimuscarinic drugs in musca...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：10.1097/00005344-198500075-00002
更新日期：1985-01-01 00:00:00
abstract：BACKGROUND:The goal of this study was to determine whether an Angiotensin II receptor antagonist, candesartan, prevents myocardial fibrosis more effectively than enalapril in animals with a non-ACE pathway during the progression of congestive heart failure (CHF). METHODS AND RESULTS:Dogs were randomly assigned to one ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200406000-00016
更新日期：2004-06-01 00:00:00
abstract：ABSTRACT:Limited data are available on the transition from subcutaneous to intravenous prostacyclin in precapillary pulmonary hypertension. We performed a retrospective analysis of all patients who were switched from subcutaneous to intravenous treprostinil with an implantable infusion pump. We included 85 consecutive,...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/FJC.0000000000000933
更新日期：2021-01-01 00:00:00
abstract：:Platelet GPIIb/IIIa antagonists are not only used to prevent platelet aggregation, but also in combination with thrombolytic agents for the treatment of coronary thrombi. Recent data indicate a potential of abciximab alone to dissolve thrombi in vivo. We investigated the potential of abciximab, eptifibatide, and tirof...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200304000-00011
更新日期：2003-04-01 00:00:00
abstract：:Cardiovascular medicine is based on high-technology management of end-stage disease. Preventive medicine is preferable but, before magnetic resonance (MR), there was no noninvasive, safe, repeatable method of detecting occlusive vascular disease, which accounts for more deaths than any other disease at a presymptomati...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章,评审
doi：
更新日期：1992-01-01 00:00:00
abstract：:Calcium channel blockade appears to be at least as effective as beta-blockade in the treatment of anginal syndromes, but whether a similar protective effect is afforded against sudden death is unknown. In order to compare experimental antifibrillatory effects of calcium channel blockade (diltiazem), beta-adrenoceptor ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-198409000-00007
更新日期：1984-09-01 00:00:00
abstract：:A randomized, double-blind, crossover trial was carried out in 17 hypertensive patients to evaluate the hypotensive efficacy and safety of verapamil. Verapamil in doses of 120 mg thrice daily was compared with pindolol in doses of 7.5 mg twice daily. A thiazide diuretic was given with both drugs. Blood pressure fell a...
journal_title：Journal of cardiovascular pharmacology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1097/00005344-198103000-00007
更新日期：1981-03-01 00:00:00
abstract：:: Interstitial fibrosis is a common pathological change in various heart diseases, especially cardiac hypertrophy. Arginine vasopressin (AVP), one of the hallmarks of heart failure, exhibits a profibrotic effect by promoting the proliferation and differentiation of cardiac fibroblasts (CFs). In contrast, angiotensin-(...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/FJC.0000000000000151
更新日期：2014-12-01 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
pub_type： 杂志文章
doi：10.1097/00005344-199504000-00005
更新日期：1995-04-01 00:00:00
abstract：:To assess dose-related effects of enalapril, we treated eight hospitalized hypertensive patients receiving constant sodium intake with incremental doses of this new angiotensin converting-enzyme blocking drug. After a few days of placebo treatment, enalapril was given in single daily doses, starting with 1.25 mg and i...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-198600081-00006
更新日期：1986-01-01 00:00:00
abstract：:Ghrelin is a novel growth hormone (GH)-releasing peptide, isolated from the stomach, which is identified as an endogenous ligand for GH secretagogues receptor. Although both ghrelin and its specific receptor are expressed in blood vessels, the cardiovascular effects of ghrelin remain unknown. To clarify whether ghreli...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/00005344-200206000-00001
更新日期：2002-06-01 00:00:00
abstract：UNLABELLED:The role of mitochondrial transporters in the cardioprotection of rat hearts exposed to high [K+]-low [Ca2+]-cardioplegia (CPG) and ischemia and reperfusion (I/R) was studied through the mechano-energetic consequences of target drugs. The total heat rate (Ht) and the left intraventricular pressure (LVP) were...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/FJC.0b013e3181b04ce3
更新日期：2009-09-01 00:00:00
abstract：:Efficacy of flecainide was investigated in 50 patients with sustained ventricular tachycardia (n = 38) or ventricular fibrillation (n = 12) during a 4-week in-hospital and 1-year follow-up period. Furthermore, the predictive value of programmed electrical stimulation, Holter monitoring, and exercise testing on outcome...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：
更新日期：1990-06-01 00:00:00
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
更新日期：1988-12-01 00:00:00
abstract：:The mechanisms by which tolerance to organic nitrates develops are still poorly understood. Enhanced oxidative stress, i.e., increased free radical production following organic nitrate administration, has been recently suggested as a possible mechanism. A randomized, double-blind, crossover study assessed in 18 health...
journal_title：Journal of cardiovascular pharmacology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1097/00005344-200302000-00018
更新日期：2003-02-01 00:00:00
abstract：:Glucocorticoids (GCs) are widely used anti-inflammatory drugs well known to cause many adverse effects. Still, there is a dearth of data on the long-term cardiovascular effects of GCs in patients with established cardiovascular disease and the effect on atherosclerotic plaque composition. A total of 1894 patients who ...
journal_title：Journal of cardiovascular pharmacology
pub_type： 杂志文章
doi：10.1097/FJC.0000000000000292
更新日期：2015-10-01 00:00:00
