Transmural coronary vasodilator reserve, and flow distribution during tachycardia in conscious young swine with right ventricular hypertrophy.

abstract：BACKGROUND:Clinical trials suggest that sotalol and dofetilide are much more effective in preventing atrial fibrillation (AF) than in terminating it. This study evaluated potential mechanisms of discordant sotalol and dofetilide effects on AF termination vs. prevention. METHODS:We applied 240-electrode epicardial mapp...

journal_title：Cardiovascular research

authors： Derakhchan K,Villemaire C,Talajic M,Nattel S

更新日期：2001-04-01 00:00:00

abstract：OBJECTIVE:Our aim was to determine in desmin homozygous mutant mice the viscoelastic properties, the mechanical strength and the structure of the carotid artery. METHODS:To assess the viscoelastic properties of large arteries, we have performed an in vivo analysis of the diameter-, and distensibility-pressure curves o...

journal_title：Cardiovascular research

authors： Lacolley P,Challande P,Boumaza S,Cohuet G,Laurent S,Boutouyrie P,Grimaud JA,Paulin D,Lamazière JM,Li Z

更新日期：2001-07-01 00:00:00

abstract：OBJECTIVE:The presence is well established in unstable angina of intracoronary thrombosis in a stenosed epicardial coronary artery. The effects of the thrombus formation on the distal microcirculation are however still unclear. METHODS:We adapted the Folts canine model of left circumflex coronary arterial stenosis and...

journal_title：Cardiovascular research

authors： Mansaray M,Belcher PR,Vergroesen I,Wright ZM,Hynd JW,Drake-Holland AJ,Noble MI

更新日期：1999-04-01 00:00:00

abstract：OBJECTIVES:M cells have been described in many mammalian species. They are thought to be relevant for the genesis of long QT intervals, afterdepolarizations and for dispersion in action potential duration and in repolarization time. Their role in the human heart is subject to debate. METHODS:We simulated action potent...

journal_title：Cardiovascular research

authors： Conrath CE,Wilders R,Coronel R,de Bakker JM,Taggart P,de Groot JR,Opthof T

更新日期：2004-05-01 00:00:00

abstract：OBJECTIVES:This study examined the effects of diet-induced hypercholesterolemia on the extent of postischemic myocyte apoptosis and elucidated the potential mechanisms involved. Furthermore, the effects of rosiglitazone (RSG) on postischemic myocardial apoptosis in HC rabbits were investigated. METHODS:Male New Zealan...

journal_title：Cardiovascular research

authors： Liu HR,Tao L,Gao E,Lopez BL,Christopher TA,Willette RN,Ohlstein EH,Yue TL,Ma XL

更新日期：2004-04-01 00:00:00

abstract：Aims:Heart failure (HF) produces left atrial (LA)-selective fibrosis and promotes atrial fibrillation. HF also causes adrenergic activation, which contributes to remodelling via a variety of signalling molecules, including the exchange protein activated by cAMP (Epac). Here, we evaluate the effects of Epac1-signalling ...

journal_title：Cardiovascular research

authors： Surinkaew S,Aflaki M,Takawale A,Chen Y,Qi XY,Gillis MA,Shi YF,Tardif JC,Chattipakorn N,Nattel S

更新日期：2019-01-01 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：:Extracellular potassium activity before and after coronary occlusion was measured in the canine heart by means of potassium-selective surface electrodes. In the ischaemic myocardium potassium activity rapidly increased from a preocclusion value of 3.2 +/- 0.3 mmol.litre-1 to 10 +/- 0.6 mmol.litre-1 within the first 5 ...

journal_title：Cardiovascular research

authors： Wiegand V,Güggi M,Meesmann W,Kessler M,Greitschus F

更新日期：1979-05-01 00:00:00

abstract：:The cellular and molecular physiology and pathology of insulin-dependent diabetes mellitus (IDDM) and non-insulin-dependent diabetes mellitus (NIDDM) are mostly studied and understood through the use of animal models. Fundamental differences between the IDDM and NIDDM animal models may help to explain the etiology beh...

journal_title：Cardiovascular research

authors： Militante JD,Lombardini JB,Schaffer SW

更新日期：2000-06-01 00:00:00

abstract：OBJECTIVE:It has been proposed that human immunodeficiency virus (HIV) infection-induced inflammatory environment may contribute to the pathogenesis of cardiovascular diseases. Recent studies have also demonstrated the potential role of estrogen as therapeutic agents in the prevention or treatment of cardiovascular dis...

journal_title：Cardiovascular research

authors： Lee YW,Eum SY,Nath A,Toborek M

更新日期：2004-07-01 00:00:00

abstract：AIMS:The human ether-a-go-go-related gene (hERG) encodes the rapidly activating delayed rectifier potassium channel (IKr). Malfunction of hERG/IKr is the primary cause of acquired long QT syndrome (LQTS), an electrical disorder of the heart that can cause arrhythmias and sudden death. Patients with autoimmune diseases ...

journal_title：Cardiovascular research

authors： Szendrey J,Lamothe SM,Vanner S,Guo J,Yang T,Li W,Davis J,Joneja M,Baranchuk A,Zhang S

更新日期：2019-08-01 00:00:00

abstract：AIMS:Hydrogen sulphide (H(2)S) is an endogenously generated gaseous transmitter that has recently been suggested to regulate cardiovascular functions. To date, there is no direct evidence for a potential role of H(2)S in regulating calcium channels in the heart. The present study aims to examine the hypothesis that H(2...

journal_title：Cardiovascular research

authors： Sun YG,Cao YX,Wang WW,Ma SF,Yao T,Zhu YC

更新日期：2008-09-01 00:00:00

abstract：AIMS:Alterations in cardiac acid-base balance can produce profound impact on excitation-contraction coupling and precipitate cardiac dysfunction and arrhythmias. A member of the solute carrier (SLC) family, Slc26a6, has been shown to be a chloride-hydroxyl exchanger and the predominant chloride-bicarbonate exchanger in...

journal_title：Cardiovascular research

authors： Kim HJ,Myers R,Sihn CR,Rafizadeh S,Zhang XD

更新日期：2013-12-01 00:00:00

abstract：:Cardiac hypertrophy was induced in rabbits at atmospheric pressure by exposing them to hypoxia equivalent to an altitude of 6000 m for 280 to 350 h. Intracellular action potentials were recorded from Purkinje cells, and from atrial and papillary muscles, contractions of which were also measured. Hearts from normoxic l...

journal_title：Cardiovascular research

authors： Dukes ID,Vaughan Williams EM

更新日期：1984-10-01 00:00:00

abstract：AIMS:Vascular inflammation is a major atherogenic factor and Toll-like receptor (TLR) 2 ligands, including bacterial and serum lipoproteins, seem to be involved in atherogenesis. On this basis, we analysed the effect of lipoproteins and different lipid components on TLR2-dependent signalling. METHODS AND RESULTS:In TL...

journal_title：Cardiovascular research

authors： Dueñas AI,Aceves M,Fernández-Pisonero I,Gómez C,Orduña A,Crespo MS,García-Rodríguez C

更新日期：2008-08-01 00:00:00

abstract：OBJECTIVE:Increased expression of the cardiac natriuretic peptides (NP), atrial natriuretic factor (ANF) and brain natriuretic peptide (BNP) is observed during chronic hemodynamic overload. The mechanisms underlying this process are not fully understood. In vitro, endothelin 1 (ET-1) is a powerful stimulator of cardiac...

journal_title：Cardiovascular research

authors： Bianciotti LG,de Bold AJ

更新日期：2001-03-01 00:00:00

abstract：Aims:To investigate the role of chromobox protein homolog 3 (Cbx3) in vascular smooth muscle cell (VSMC) proliferation, migration, and neointima formation following vascular injury. Methods and results:Overexpression of Cbx3 led to a significant increase in VSMC contractile gene expression and VSMC apoptosis as well a...

journal_title：Cardiovascular research

authors： Zhang C,Chen D,Maguire EM,He S,Chen J,An W,Yang M,Afzal TA,Luong LA,Zhang L,Lei H,Wu Q,Xiao Q

更新日期：2018-03-01 00:00:00

abstract：:Platelet-dependent thrombus formation is a key event in the pathogenesis of acute myocardial infarction (AMI). Platelets mediate both thrombotic occlusion of the entire epicardial coronary artery and also accumulate in the microcirculation resulting in impairment of microcirculation and provoking myocardial ischemia d...

journal_title：Cardiovascular research

authors： Gawaz M

更新日期：2004-02-15 00:00:00

abstract：:An in situ preparation of the rabbit thoracic aorta has been used to study the transport of short-lived radioactive isotopes of oxygen (15O16O), nitrogen (13N14N) and an isotope of xenon (133Xe) from 0.9% NaCl into the artery wall. At a luminal hydrostatic pressure of 2 kPa the uptake of all three isotopes by the inti...

journal_title：Cardiovascular research

authors： Davis J,Klinowski J,Winlove CP

更新日期：1981-08-01 00:00:00

abstract：:Twenty patients who had suffered myocardial infarction within the previous 3 to 13 days performed face immersion with breath-holding. The maximum reduction in heart rate was 17 +/- 9 beats-min--1 (mean +/- SD). When compared with 24 patients without evidence ischaemic heart disease, they behaved more like younger pati...

journal_title：Cardiovascular research

authors： Gooden BA,Holdstock G,Hampton JR

更新日期：1978-04-01 00:00:00

abstract：:To evaluate the effect of beta blockade on energy metabolism in ischaemic myocardium metoprolol tartrate in doses of 0.2 or 0.5 mg.kg-1 or saline was injected into 24 anaesthetised dogs 20 min after coronary ligation. Regional myocardial blood flow was measured by the hydrogen gas clearance method, and the heart rate ...

journal_title：Cardiovascular research

authors： Nanki M,Itoh K,Matsubara T,Nishimura K,Kambe T,Sugiyama S,Ozawa T,Sakamoto N

更新日期：1987-09-01 00:00:00

abstract：:Myocardial capillary permeability was determined in 20 dogs by applying a new method which resembles the tissue-uptake technique. The method consisted of a bolus injection of 51Cr-EDTA into the left atrium, determination of the average arterial tracer concentration and subsequent assay of myocardial tissue activity 10...

journal_title：Cardiovascular research

authors： Amtorp O,Eliasen P,Abildgaard U,Haunsø S

更新日期：1984-05-01 00:00:00

abstract：:Atherosclerosis is considered to be a form of chronic inflammation governed by a complex network of inter- and intra-cellular signaling pathways. The pleiotropic cytokine interferon-gamma (IFN-gamma) is a key pro-inflammatory mediator that is expressed at high levels in atherosclerotic lesions. IFN-gamma regulates the...

journal_title：Cardiovascular research

authors： Harvey EJ,Ramji DP

更新日期：2005-07-01 00:00:00

abstract：OBJECTIVE:Myocardial cellular electrophysiology and intracellular Ca2+ regulation are altered in heart failure. The extent of these changes may vary within the layers of the ventricular wall. To examine this, cell size, action potential and intracellular Ca2+ transient characteristics (Fura-2) were measured in single c...

journal_title：Cardiovascular research

authors： McIntosh MA,Cobbe SM,Smith GL

更新日期：2000-01-14 00:00:00

abstract：STUDY OBJECTIVE:The aim was to investigate whether basal coronary vascular tone and myocardial perfusion depend upon endothelial nitric oxide (NO) synthesis. DESIGN:Myocardial blood flow and vascular resistance of the left and right ventricles were studied before and after intravenous infusions of either NG-nitro-L-ar...

journal_title：Cardiovascular research

authors： Benyó Z,Kiss G,Szabó C,Csáki C,Kovách AG

更新日期：1991-08-01 00:00:00

abstract：:This paper puts emphasis on pioneers who developed cardiac flow dynamics concepts during the second half of the 20th century at a period where pressure measurements were the rule. Thinking flow instead of pressure dynamics corresponded to in-depth conceptual changes: whereas blood pressure generally has a single posit...

journal_title：Cardiovascular research

authors： Veyrat C

更新日期：2001-08-01 00:00:00

abstract：:Surgical preparation of human saphenous vein for coronary artery bypass grafting involving distension and storage in iso-osmotic sodium chloride solution reduced tissue adenosine triphosphate (ATP) (mean(SEM] concentration from 280(20) nmol.g-1 wet wt (n = 25) to 140(30) nmol.g-1 wet wt (n = 12) and the adenosine trip...

journal_title：Cardiovascular research

authors： Angelini GD,Passani SL,Breckenridge IM,Newby AC

更新日期：1987-12-01 00:00:00

abstract：OBJECTIVE:The development of collateral microvessels following therapeutic angiogenesis with vascular endothelial growth factor (VEGF) was investigated using a new system of microangiography that employs monochromatic synchrotron radiation (SR) and a high definition video system to visualize arteries with a spatial res...

journal_title：Cardiovascular research

authors： Takeshita S,Isshiki T,Mori H,Tanaka E,Tanaka A,Umetani K,Eto K,Miyazawa Y,Ochiai M,Sato T

更新日期：1997-09-01 00:00:00

abstract：STUDY OBJECTIVE:The objectives were (a) to describe the effects of vasoactive drugs in normal rats upon cardiovascular function assessed by computing aortic haemodynamic power and input impedance, each separated into their component parts, and (b) to study the relationship between left ventricular pulsatile power outpu...

journal_title：Cardiovascular research

authors： Wright G

更新日期：1991-11-01 00:00:00

abstract：OBJECTIVE:The aim was to examine the effect of doxorubicin on spontaneous cyclic Ca2+ release from the sarcoplasmic reticulum of skinned fibres, as measured by isometric tension development in EGTA free, Ca2+ free solution. METHODS:Experiments were done on fragments of papillary muscles from the right ventricles of gu...

journal_title：Cardiovascular research

authors： Asayama J,Yamahara Y,Tatsumi T,Miyazaki H,Inoue M,Omori I,Inoue D,Nakagawa M

更新日期：1992-04-01 00:00:00