Na+/H+ exchange and its inhibition in cardiac ischemia and reperfusion.

abstract：:Perfusion of isoprenaline in the dog may induce left ventricular hypertrophy (LVH), and this effect is suppressed by propranolol. Cultured foetal cardiomyocytes exposed to catecholamines show an increase in protein synthesis and RNA turnover. In spontaneously hypertensive rats (SHR), and perhaps in man, sympatholytic ...

journal_title：Basic research in cardiology

authors： Rorive G,Carlier P,Smelten N,Zgheib A

更新日期：1991-01-01 00:00:00

abstract：:The proximal segments of the left coronary artery are foreshortended in the usual projections. By additional cranio-caudal (half axial) projections the X-ray beam can be directed perpendicular to these segments. In some patients lesions especially of the left main coronary artery or the proximal LAD can be seen or acc...

journal_title：Basic research in cardiology

authors： Rentrop P

更新日期：1976-01-01 00:00:00

abstract：:Epidemiological studies have repeatedly demonstrated a beneficial effect of moderate alcohol consumption on the incidence of coronary heart disease, myocardial infarction and overall mortality. The latter increases with excessive alcohol consumption. Although most epidemiological studies demonstrate a beneficial effec...

journal_title：Basic research in cardiology

authors： Flesch M,Rosenkranz S,Erdmann E,Böhm M

更新日期：2001-04-01 00:00:00

abstract：:The stroke volume at rest of 81 test subjects with no evident cardiac or circulatory dysfunction was determined by impedance cardiography and the measurements were repeated after 11 weeks. In order to attain comparable and reproducible conditions, 44 test subjects were chosen who showed heart rates at rest not higher ...

journal_title：Basic research in cardiology

authors： Stick C,Büchsel R

更新日期：1978-11-01 00:00:00

abstract：:Because of the close anatomical association between the ventricles, the volume of one ventricle can directly affect the volume and pressure within the other ventricle. To study the mechanical coupling between the ventricles, we modeled the right and left ventricles as a two-compartment model with right wall (Crw), sep...

journal_title：Basic research in cardiology

authors： Santamore WP,Shaffer T,Hughes D

更新日期：1986-09-01 00:00:00

abstract：AIMS:There is a need for better identification of patients at high risk for malignant arrhythmias who would benefit from implantable cardioverter defibrillators (ICD). The purpose of this study was to assess whether the C825T polymorphism in the G-protein beta3 subunit gene, GNB3, might serve as a genetic marker for re...

journal_title：Basic research in cardiology

authors： Wieneke H,Naber CN,Piaszek L,Sack S,Frey UH,Heusch G,Erbel R,Siffert W

更新日期：2006-09-01 00:00:00

abstract：:There is no doubt that major advances have been made in cardiac electrophysiology using single heart cells. Accurate analysis of rapid inward sodium current and the second inward current carried by calcium has resulted in a major re-examination of the steps involved in excitation-contraction coupling in the heart. Fut...

journal_title：Basic research in cardiology

authors： Powell T

更新日期：1985-01-01 00:00:00

abstract：:Increased activity of the sympathetic system is an important feature contributing to the pathogenesis and progression of chronic heart failure. While the mechanisms and consequences of enhanced norepinephrine release from sympathetic nerves have been intensely studied, the role of the adrenal gland in the development ...

journal_title：Basic research in cardiology

authors： Schneider J,Lother A,Hein L,Gilsbach R

更新日期：2011-06-01 00:00:00

abstract：:The pathogenesis of atherosclerosis is a multifactorial process. A possible anti-atherosclerotic drug should therefore interfere with different targets that are important during the development of an atherosclerotic lesion. Two of the early events are the activated migration and proliferation of arterial smooth muscle...

journal_title：Basic research in cardiology

authors： Wülfroth P,Grünwald J

更新日期：1989-05-01 00:00:00

abstract：:We hypothesized that nandrolone (ND)-abuse induces cardiac hypertrophy, increases myocardial susceptibility to ischemia/reperfusion (I/R) injury, and reduces responsiveness to postconditioning (PostC) cardioprotection. Wistar-rats were ND treated for 2 weeks (short_ND) or 10 weeks (long_ND). Vehicle-treated rats serve...

journal_title：Basic research in cardiology

authors： Penna C,Tullio F,Perrelli MG,Moro F,Abbadessa G,Piccione F,Carriero V,Racca S,Pagliaro P

更新日期：2011-05-01 00:00:00

abstract：:Sarcoplasmic reticulum (SR) from left ventricles of rats that developed spontaneous hypertension was studied in vitro. Similar increases of left ventricular mass were found when grouping the animals into mild and severe hypertensives (average systolic arterial pressure of 168 +/- 4 and 202 +/- 6 mmHg, respectively). T...

journal_title：Basic research in cardiology

authors： Cuneo ME,Grassi de Gende AO

更新日期：1988-05-01 00:00:00

abstract：OBJECTIVES:The impact of acute collagen disruption by the disulfide donor, 5,5'-dithio-2-nitrobenzoic acid (DTNB) on ventricular properties was tested in rat hearts. METHODS:Collagen was degraded acutely in 13 isolated, isovolumically contracting rat hearts by perfusion with 1 mM DTNB added to Krebs-Henseleit solution...

journal_title：Basic research in cardiology

authors： Todaka K,Jiang T,Chapman JT,Gu A,Zhu SM,Herzog E,Hochman JS,Steinberg SF,Burkhoff D

更新日期：1997-06-01 00:00:00

abstract：:In the human heart several isoforms of the sodium pump (Na,K-ATPase, the cardiac glycoside receptor) are expressed (alpha1beta1, alpha2beta1, and alpha3beta1). Their expression is regulated in a highly specific manner, so that there are region specific differences in the expression pattern. The isoform expression patt...

journal_title：Basic research in cardiology

authors： Müller-Ehmsen J,McDonough AA,Farley RA,Schwinger RH

更新日期：2002-01-01 00:00:00

abstract：:Reversibly injured myocardium after short periods of ischemia is characterized by a prolonged depression of contractile function which can, however, be enhanced by inotropic interventions. Thus, a lack of inotropic stimulation due to ischemic damage of cardiac sympathetic nerves has been suggested as a mechanism under...

journal_title：Basic research in cardiology

authors： Schulz R,Frehen D,Heusch G

更新日期：1990-01-01 00:00:00

abstract：:Verapamil alleviates symptoms in patients with hypertrophic cardiomyopathy (HCM), but the underlying mechanism of improvement remains speculative. Baseline and dipyridamole myocardial blood flow (MBF) were measured in 15 HCM patients (14 men, 42 +/- 10 years), before and after 4 weeks of verapamil SR 480 mg daily, usi...

journal_title：Basic research in cardiology

authors： Choudhury L,Elliott P,Rimoldi O,Ryan M,Lammertsma AA,Boyd H,McKenna WJ,Camici PG

更新日期：1999-02-01 00:00:00

abstract：:Recent reports indicate that elevating DNA glycosylase/AP lyase repair enzyme activity offers marked cytoprotection in cultured cells and a variety of injury models. In this study, we measured the effect of EndoIII, a fusion protein construct that traffics Endonuclease III, a DNA glycosylase/AP lyase, to the mitochond...

journal_title：Basic research in cardiology

authors： Yang XM,Cui L,White J,Kuck J,Ruchko MV,Wilson GL,Alexeyev M,Gillespie MN,Downey JM,Cohen MV

更新日期：2015-03-01 00:00:00

abstract：:To understand the effect of transcription regulation in modulating cardiac aging, we sought to study the role of serum response factor (SRF), a key transcription factor in the heart that is normally increased with senescence and also in congestive heart failure. A Tet-Off gene expression system was used for cardiac-sp...

journal_title：Basic research in cardiology

authors： Azhar G,Zhang X,Wang S,Zhong Y,Quick CM,Wei JY

更新日期：2007-05-01 00:00:00

abstract：:In recent years research has shown that muscle is capable of reacting to mechanical stimuli by altering biochemical processes. Myocardium is probably the source of a biochemical factor, or factors which activate myocardial protein synthesis. In experimentally induced cardiac hypertrophy adaptive alterations have been ...

journal_title：Basic research in cardiology

authors： Kölbel F,Schreiber V

更新日期：1983-07-01 00:00:00

abstract：:Mitochondria in largely postmitotic cells (e.g. cardiomyocytes, neurons or skeletal muscle myotubes) have a limited life span of a few weeks. Their replacement during normal turnover requires an intergenomic coordination between the mitochondrial genome (mtDNA, encoding for 13 protein subunits of the respiratory chain...

journal_title：Basic research in cardiology

authors： Szibor M,Holtz J

更新日期：2003-07-01 00:00:00

abstract：:Guinea-pig left atria were loaded with 10 microCi 7-[3H]noradrenaline, and noradrenaline release from sympathetic nerve endings was then elicited by refractory period field stimulation. When one pulse of 0.2 ms duration was applied during each refractory period, the resulting transmitter release was halved by 3 x 10(-...

journal_title：Basic research in cardiology

authors： Brasch H

更新日期：1993-11-01 00:00:00

abstract：:Denervation deprives the heart of its normal adrenergic and cholinergic control via the sympathetic and parasympathetic pathways. In a heart which is blood supplied by a donor animal of the same species, normal contractility is maintained, probably by blood borne catecholamines or possibly by unknown inotropic agents ...

journal_title：Basic research in cardiology

authors： Reichel H

更新日期：1976-01-01 00:00:00

abstract：:This study was designed to identify mechanisms responsible for coronary vasodilation in response to progressive decreases in hematocrit. Isovolemic hemodilution was produced in open-chest, anesthetized swine via concurrent removal of 500 ml of arterial blood and the addition of 500 ml of 37 °C saline or synthetic plas...

journal_title：Basic research in cardiology

authors： Kiel AM,Goodwill AG,Noblet JN,Barnard AL,Sassoon DJ,Tune JD

更新日期：2017-09-30 00:00:00

abstract：:The effects of 3 hours of ischemia and 1 hour of reperfusion on biochemical, physiological and ultrastructural parameters were studied in 12 dogs. In the ischemic subendocardium without reperfusion, mitochondrial losses of adenine (ATP + ADP + AMP) and pyridine (NAD + NADH) nucleotides far exceeded those observed in w...

journal_title：Basic research in cardiology

authors： Regitz V,Paulson DJ,Hodach RJ,Little SE,Schaper W,Shug AL

更新日期：1984-03-01 00:00:00

abstract：:The PKC hypothesis and its variants are attractive but unproved. The chief difficulty is the lack of an objective means to assess whether or not PKC has been activated in hearts preconditioned in vivo with ischemia or in hearts preconditioned by pharmacologic means. The strongest evidence is supporting the PKC hypothe...

journal_title：Basic research in cardiology

authors： Jennings RB

更新日期：1997-01-01 00:00:00

abstract：:Hemodynamics and myocardial contractility were evaluated in five unanesthetized calves during acute hypocapnic and isocapnic hypoxia and during acute hypocapnic hypoxia with beta-adrenergic blockade. Both hypocapnic and isocapnic hypoxia, with mean PaO2 levels of 33.1 and 39.1 mm Hg respectively, produced a decline in...

journal_title：Basic research in cardiology

authors： Buss DD,Bisgard GE

更新日期：1976-09-01 00:00:00

abstract：:The assessment of proarrhythmic risks of drugs remains challenging. To evaluate the suitability of rat engineered heart tissue (EHT) for detecting proarrhythmic effects. We monitored drug effects on spontaneous contractile activity and, in selected cases, on action potentials (sharp microelectrode) and Ca2+ transients...

journal_title：Basic research in cardiology

authors： Eder A,Hansen A,Uebeler J,Schulze T,Neuber C,Schaaf S,Yuan L,Christ T,Vos MA,Eschenhagen T

更新日期：2014-01-01 00:00:00

abstract：:Carotid baroreceptor stimulation (CBS) has been shown to improve cardiac dysfunction and pathological structure remodelling. This study aimed to investigate the effects of CBS on the ventricular electrophysiological properties in canines with chronic heart failure (CHF). Thirty-eight beagles were randomized into contr...

journal_title：Basic research in cardiology

authors： Wang J,Dai M,Cao Q,Yu Q,Luo Q,Shu L,Zhang Y,Bao M

更新日期：2019-09-09 00:00:00

abstract：:Apart from local heterogeneities of myocardial blood flow, the regulation of vascular tone is equally complex. Changes in vascular tone are essential for the adaptation of coronary blood flow to varying metabolic demands. The majority of coronary vascular resistance is found in the microcirculation, that is, in vessel...

journal_title：Basic research in cardiology

authors： Tiefenbacher CP,Chilian WM

更新日期：1998-12-01 00:00:00

abstract：:We have used x-ray microangiography to investigate the influence of EDRF and endothelin-1 on arterial diameters (70-800 microns) at bifurcations in the isolated rabbit ear and the "optimality" of its branching geometry. The median value of the junction exponent x (which is given by d0x = d1x + d2x, where d0, d1 and d2...

journal_title：Basic research in cardiology

authors： Griffith TM,Edwards DH,Randall MD

更新日期：1991-01-01 00:00:00

abstract：:We describe diastolic properties of the myocardium in terms of stress-strain relations. In a mathematical analysis, the equation sigma = alpha(e beta.epsilon-1) of the stress-strain curve can be changed by an increase in the exponent beta or the multiplicative constant alpha. It can be experimentally shown that in hyp...

journal_title：Basic research in cardiology

authors： Holubarsch C

更新日期：1987-01-01 00:00:00