abstract：OBJECTIVES:The aim was to determine the effect and mechanisms by which myocyte stretch interacts with the prolongation of action potential duration (APD) by the class III antiarrhythmic agent E-4031. METHODS:Action potentials and whole-cell currents were measured in isolated guinea pig ventricular myocytes with a patc...

journal_title：Cardiovascular research

authors： Groh WJ,Gibson KJ,Maylie JG

更新日期：1996-02-01 00:00:00

abstract：OBJECTIVE:Infusion of angiotensin II (AngII) during the third and fourth week after balloon injury of the left common carotid artery of the rat induces smooth muscle cell (SMC) DNA synthesis. In this study we wanted to investigate whether alpha 1-adrenoreceptors are involved in AngII-induced SMC DNA synthesis in the ne...

journal_title：Cardiovascular research

authors： van Kleef EM,Smits JF,Schwartz SM,Daemen MJ

更新日期：1996-02-01 00:00:00

abstract：BACKGROUND:Nitric oxide (NO) attenuates neutrophil (PMN)-mediated damage, partly by inhibiting superoxide anion (O2-) generation and adherence to the coronary artery endothelium. L-Arginine is the endogenous substrate for production of NO via the NO synthase pathway. This study tested the hypothesis that the endogenous...

journal_title：Cardiovascular research

authors： Sato H,Zhao ZQ,Vinten-Johansen J

更新日期：1996-01-01 00:00:00

abstract：:The contractile response to beta-adrenoceptor stimulation has been found to be reduced in single myocytes from failing human ventricle. A portion of that reduction was statistically related to the age of the patient. We have developed a method for obtaining viable contracting myocytes from small biopsies of human vent...

journal_title：Cardiovascular research

authors： Davies CH,Ferrara N,Harding SE

更新日期：1996-01-01 00:00:00

abstract：OBJECTIVES:Coronary artery often reoccludes after thrombolytic therapy with recombinant tissue-plasminogen activator (rt-PA). This reocclusion is thought to be due to in situ platelet activation mediated by thromboxane (Tx) A2 and thrombin; hence, aspirin and thrombin inhibitors are often used in patients with acute my...

journal_title：Cardiovascular research

authors： Chen LY,Nichols WW,Mattsson C,Teger-Nilson AC,Wallin R,Saldeen TG,Mehta JL

更新日期：1995-12-01 00:00:00

abstract：BACKGROUND:During reperfusion of ischaemic myocardium, Na+/H+ exchange promotes recovery from acidosis resulting in an accumulation of intracellular Na+. This leads to calcium overload via Na+/Ca2+ exchange and might result in cell necrosis contributing to reperfusion injury. METHODS AND RESULTS:We assessed whether HO...

journal_title：Cardiovascular research

authors： Rohmann S,Weygandt H,Minck KO

更新日期：1995-12-01 00:00:00

abstract：:Platelet-activating factor might be responsible for the alterations of diastolic function observed in different disease states and these potential effects have not been studied. The effect of incremental concentrations of platelet-activating factor (to a maximum of 200 nM) was therefore examined in isolated perfused r...

journal_title：Cardiovascular research

authors： Muñoz HR,Evans RD,Marsch SC,Foëx P

更新日期：1995-12-01 00:00:00

abstract：OBJECTIVES:The present study was designed to determine whether tonic nitric oxide (NO)-mediated vasodilator innervation participates in basilar arterial dilatation in the anesthetized Japanese monkey. METHODS:The basilar arterial diameter was angiographically measured, and NG-nitro-L-arginine (L-NNA), a nitric oxide s...

journal_title：Cardiovascular research

authors： Okamura T,Ayajiki K,Toda N

更新日期：1995-11-01 00:00:00

abstract：OBJECTIVE:We determine if action potential duration (APD) shortening and cardioprotection are separable phenomena in ATP-sensitive potassium channel (KATP) openers which protect ischemic myocardium via a glyburide-reversible mechanism. METHODS:We determined the effect of the weakly vasodilating KATP opener, BMS-180448...

journal_title：Cardiovascular research

authors： Grover GJ,D'Alonzo AJ,Hess T,Sleph PG,Darbenzio RB

更新日期：1995-11-01 00:00:00

abstract：OBJECTIVE:To characterise the effect of coronary intra-arterial thrombosis upon the downstream vascular bed. BACKGROUND:The vascular response downstream from a coronary intra-arterial thrombus has not previously been characterised. We postulated that downstream vasoconstriction might result from the presence of endoth...

journal_title：Cardiovascular research

authors： Belcher PR,Vergroesen I,Drake-Holland AJ,Noble MI

更新日期：1995-11-01 00:00:00

abstract：OBJECTIVES:While it is probable that the cerebrovascular spasm which occurs after subarachnoid haemorrhage results from the action of haemoglobin, the mechanism of that process remains unclear. These studies were thus designed to test the hypothesis that the action of oxyhaemoglobin results from the iron-catalyzed form...

journal_title：Cardiovascular research

authors： Vollrath B,Chan P,Findlay M,Cook D

更新日期：1995-10-01 00:00:00

abstract：OBJECTIVES:The purpose of this study was to investigate the changes in beta-adrenoceptor density (Bmax) and distribution in a model of chronic myocardial infarction in rats, and to relate possible changes to hemodynamic and neurohumoral abnormalities. In addition, we examined the effects of 8 weeks treatment with ibopa...

journal_title：Cardiovascular research

authors： van Veldhuisen DJ,Brodde OE,van Gilst WH,Schulze C,Hegeman H,Anthonio RL,Scholtens E,de Graeff PA,Wesseling H,Lie KI

更新日期：1995-09-01 00:00:00

abstract：:Experimental studies have provided evidence that the autonomic nervous activity is modulated by oestrogen. Such modulation at central and peripheral levels tends to suppress sympathetic but elevate parasympathetic tone to the cardiovascular system. Thus, available data support the view that cardiovascular protection b...

journal_title：Cardiovascular research

authors： Du XJ,Riemersma RA,Dart AM

更新日期：1995-08-01 00:00:00

abstract：OBJECTIVES:Angiotensin converting enzyme (ACE) activity in the plasma does not change significantly with hypertension in two-kidney, one-clip hypertensive (2K-1C) rats. However, heart ACE activity and mRNA increase with hypertension. We measured the ACE activity and mRNA in hypertrophied hearts at different times after...

journal_title：Cardiovascular research

authors： Challah M,Nicoletti A,Arnal JF,Philippe M,Laboulandine I,Allegrini J,Alhenc-Gelas F,Danilov S,Michel JB

更新日期：1995-08-01 00:00:00

abstract：OBJECTIVE:The aim was to examine the role of nitric oxide (NO) in the myocardial microcirculation. METHODS:Open chest anaesthetised dogs received intracoronary infusion of NG-monomethyl-L-arginine (L-NMMA; 0.5 mg.kg-1 over 30 min). Myocardial microvascular extraction fraction of a small hydrophilic solute (technetium ...

journal_title：Cardiovascular research

authors： Hansen PR,Haunsø S

更新日期：1995-06-01 00:00:00

abstract：OBJECTIVE:At present little is known about the factors that regulate the expression of the endothelins and their receptors in cardiac tissue in vivo. The aim of this study was to investigate changes in expression of the endothelins (ET-1, ET-2, and ET-3) and their receptors (ETAR and ETBR) in the hypertrophied heart of...

journal_title：Cardiovascular research

authors： Brown LA,Nunez DJ,Brookes CI,Wilkins MR

更新日期：1995-06-01 00:00:00

abstract：OBJECTIVE:The aims were (1) to investigate the effect of hypertention on left ventricular dilatation and haemodynamic alterations following acute myocardial infarction in spontaneously hypertensive rats (SHR) and normotensive rats (WKY); (2) to compare haemodynamic indices between the two groups; (3) to assess whether ...

journal_title：Cardiovascular research

authors： Nishikimi T,Yamagishi H,Takeuchi K,Takeda T

更新日期：1995-06-01 00:00:00

abstract：OBJECTIVE:The aim was to determine if either heparin or N-acetylheparin could reduce the extent of myocardial injury resulting from 90 min of coronary artery occlusion and 6 h of reperfusion in the anaesthetised dog. METHODS:Heparin or N-acetylheparin was given in three repeated intravenous doses of 2 mg.kg-1. Drug or...

journal_title：Cardiovascular research

authors： Black SC,Gralinski MR,Friedrichs GS,Kilgore KS,Driscoll EM,Lucchesi BR

更新日期：1995-05-01 00:00:00

abstract：OBJECTIVE:Unidirectional conduction block (UCB) and reentry may occur as a consequence of an abrupt tissue expansion and a related change in the electrical load. The aim of this study was to evaluate critical dimensions of the tissue necessary for establishing UCB in heart cell culture. METHODS:Neonatal rat heart cell...

journal_title：Cardiovascular research

authors： Fast VG,Kléber AG

更新日期：1995-05-01 00:00:00

abstract：OBJECTIVE:The aim was to compare differences in peak twitch force occurring despite similar degrees of right ventricular hypertrophy in ferrets with pulmonary artery banding at either weanling or juvenile age. METHODS:After inducing pressure overload hypertrophy by banding the pulmonary artery of weanling and juvenile...

journal_title：Cardiovascular research

authors： Gwathmey JK,Liao R,Ingwall JS

更新日期：1995-04-01 00:00:00

abstract：OBJECTIVE:The aim was to investigate the effect of lowering external potassium on the sensitivity of the normal and hypertrophied rat heart to arrhythmias induced by increases in ventricular wall stress. METHODS:The isolated working heart model was used to compare hypertrophied hearts from the spontaneously hypertensi...

journal_title：Cardiovascular research

authors： Evans SJ,Levi AJ,Jones JV

更新日期：1995-04-01 00:00:00

abstract：OBJECTIVE:The aim was to test for the presence of cAMPi activated and ATPo activated chloride conductances (ICl(cAMP) and ICl(ATP)) in mouse ventricular myocytes. METHODS:Membrane currents were measured in enzymatically dissociated ventricular myocytes using the whole cell configuration of the patch clamp technique. ...

journal_title：Cardiovascular research

authors： Levesque PC,Hume JR

更新日期：1995-03-01 00:00:00

abstract：OBJECTIVE:Anisotropic conduction characteristics, which may be expressed as the ratio of conduction velocities in the longitudinal (Vlong) and transverse (Vtrans) fibre directions, have been shown to stabilise reentry and favour the induction of sustained, uniform ventricular tachycardia. The aim of this study was to i...

journal_title：Cardiovascular research

authors： Hélie F,Cossette J,Vermeulen M,Cardinal R

更新日期：1995-03-01 00:00:00

abstract：:Functional studies in extrarenal non-epithelial cells such as smooth muscle cells and easily accessible human lymphocytes have demonstrated that aldosterone not only produces classical genomic effects, but also rapid non-genomic effects on transmembrane electrolyte movements. These involve the activation of the Na+/H+...

journal_title：Cardiovascular research

authors： Wehling M

更新日期：1995-02-01 00:00:00

abstract：OBJECTIVE:The aim was to investigate the effects of slowing the recovery of ischaemia induced intracellular acidosis with hypercapnic acidosis or dimethyl amiloride (DMA) on the extent of reperfusion induced cell death. METHODS:Isolated arterially perfused rabbit papillary muscles and septa were suspended in a control...

journal_title：Cardiovascular research

authors： Kaplan SH,Yang H,Gilliam DE,Shen J,Lemasters JJ,Cascio WE

更新日期：1995-02-01 00:00:00

abstract：OBJECTIVE:The mechanism of the protective effect of ischaemic preconditioning in the myocardium is not yet known. The aim of this study was to test the hypothesis that endogenous myocardial catecholamines may be mediators of preconditioning. METHODS:To test whether endogenous catecholamines are involved in preconditio...

journal_title：Cardiovascular research

authors： Weselcouch EO,Baird AJ,Sleph PG,Dzwonczyk S,Murray HN,Grover GJ

更新日期：1995-01-01 00:00:00

abstract：OBJECTIVE:The function of angiotensin converting enzyme (ACE) at cell sites of high collagen turnover, such as heart valves, is uncertain. The aim of this study was to assess ACE and kininase-II-like activities and collagen turnover in cultured valvular interstitial cells of the adult rat heart. METHODS:The valvular i...

journal_title：Cardiovascular research

authors： Katwa LC,Ratajska A,Cleutjens JP,Sun Y,Zhou G,Lee SJ,Weber KT

更新日期：1995-01-01 00:00:00

abstract：OBJECTIVE:The aim was to clarify the site in the coronary microcirculation that is dilated by an ATP sensitive potassium channel opener, levcromakalim, and to examine whether the magnitude of dilatation is size dependent. METHODS:Coronary arterial microvessels were observed through an intravital microscope equipped wi...

journal_title：Cardiovascular research

authors： Sato K,Kanatsuka H,Sekiguchi N,Akai K,Wang Y,Sugimura A,Kumagai T,Komaru T,Shirato K

更新日期：1994-12-01 00:00:00

abstract：OBJECTIVE:Increased cardiac collagen is seen in uninephrectomised rats made hypertensive by aldosterone infusion and high salt, with the possibility of a direct effect of aldosterone at the level of the cardiac fibroblast. The aim of this study was to examine the effects of aldosterone, glucocorticoids, and angiotensin...

journal_title：Cardiovascular research

authors： Fullerton MJ,Funder JW

更新日期：1994-12-01 00:00:00

abstract：OBJECTIVE:The aim was to investigate how platelet activation during myocardial ischaemia can induce electrophysiological and arrhythmogenic effects, and examine the involvement of different platelet membrane receptors in producing these effects. METHODS:Transmembrane action potentials and electrograms were recorded fr...

journal_title：Cardiovascular research

authors： Flores NA,Goulielmos NV,Seghatchian MJ,Sheridan DJ

更新日期：1994-11-01 00:00:00

abstract：OBJECTIVE:Important physiological and pathophysiological conditions are associated with changes in secretion and synthesis of atrial natriuretic factor (ANF) and brain natriuretic peptide (BNP). The aim of this study was to examine the effects of mechanical stretch and endothelin-1 on ANF and BNP secretion and gene exp...

journal_title：Cardiovascular research

authors： Bruneau BG,de Bold AJ

更新日期：1994-10-01 00:00:00

abstract：OBJECTIVE:Washed platelets have been shown to protect isolated buffer perfused rat hearts from injury and dysfunction following ischaemia-reperfusion. This study was designed to investigate whether platelet glutathione redox cycle contributes to the protective effect of platelets. METHODS:Isolated rat hearts were perf...

journal_title：Cardiovascular research

authors： Yang BC,Mehta A,Mehta JL

更新日期：1994-10-01 00:00:00

abstract：OBJECTIVE:The aim was to investigate the effect on the coronary network of the interaction between high arterial blood oxygen tension (PaO2) and stimulation by the alpha adrenergic agonist phenylephrine or by serotonin in an isolated, blood perfused rabbit heart preparation. METHODS:Fresh pig erythrocytes in Krebs-Hen...

journal_title：Cardiovascular research

authors： Mouren S,Vicaut E,Charansonney O,Duvelleroy M

更新日期：1994-09-01 00:00:00

abstract：OBJECTIVE:Transient atrial fibrillation is sometimes observed following adenosine administration and adenosine is known to shorten atrial action potential duration and refractory period. This study was designed to characterise the dose-response relationship of adenosine on these variables relative to arrhythmia inducti...

journal_title：Cardiovascular research

authors： Kabell G,Buchanan LV,Gibson JK,Belardinelli L

更新日期：1994-09-01 00:00:00

abstract：OBJECTIVE:The aim was to determine the ionic basis of action potential lengthening associated with cardiac hypertrophy. METHODS:Action potentials and ionic currents of left ventricular myocytes isolated from normal and hypertrophied hearts were recorded with patch pipettes. Since cardiac hypertrophy is a time dependen...

journal_title：Cardiovascular research

authors： Cerbai E,Barbieri M,Li Q,Mugelli A

更新日期：1994-08-01 00:00:00

abstract：OBJECTIVE:Cytokine induction of intercellular adhesion molecule-1 (ICAM-1) on cardiac myocytes may be a critical step in cardiac inflammation associated with acute myocardial infarction and myocarditis. The aim of this study was to investigate the involvement of monocyte chemoattractant protein-1 (MCP-1), a homologue o...

journal_title：Cardiovascular research

authors： Ban K,Ikeda U,Takahashi M,Kanbe T,Kasahara T,Shimada K

更新日期：1994-08-01 00:00:00

abstract：OBJECTIVE:The Na+ activated K+ channel (IK(Na)) may be activated during ischaemia when the intracellular Na+ concentration is raised. As ischaemia is also associated with intracellular acidification, the influence of intracellular pH on this K+ channel was investigated. METHODS:The effects of intracellular Na+ and H+ ...

journal_title：Cardiovascular research

authors： Veldkamp MW,Vereecke J,Carmeliet E

更新日期：1994-07-01 00:00:00

abstract：OBJECTIVE:Ischaemic preconditioning may be mediated by oxygen free radicals generated during preconditioning. Conflicting results have been reported regarding the effect of superoxide dismutase (SOD) in attenuating the cardioprotective effect of preconditioning. The aim of the study was to reconcile this conflict by ex...

journal_title：Cardiovascular research

authors： Tanaka M,Fujiwara H,Yamasaki K,Sasayama S

更新日期：1994-07-01 00:00:00

abstract：OBJECTIVE:The aim was to further characterise an experimental model of preconditioning of isolated rabbit cardiomyocytes and to determine the role of adenosine receptor subtypes in initiation of the protective response. METHODS:Isolated myocytes were subjected to 5 min preincubation in the presence or absence of gluco...

journal_title：Cardiovascular research

authors： Armstrong S,Ganote CE

更新日期：1994-07-01 00:00:00

abstract：OBJECTIVE:The alpha adrenoceptor antagonist phentolamine prevents ischaemia related arrhythmias in rat, guinea pig, and cat heart. This effect has been related to the attenuation of ischaemia induced shortening of the action potential and has been ascribed to its alpha adrenoceptor antagonist properties. The aim of thi...

journal_title：Cardiovascular research

authors： Wilde AA,Veldkamp MW,van Ginneken AC,Opthof T

更新日期：1994-06-01 00:00:00