Abstract：
OBJECTIVE:To determine the effect of Na(+)-H+ exchange blockade on ischemic rigor contracture and reperfusion-induced hypercontracture. METHODS:Thirty-six pigs were submitted to 55 min of coronary occlusion and 5 h reperfusion. Myocardial segment length analysis with ultrasonic microcrystals was used to detect ischemic rigor (reduction in passive segment length change) and hypercontracture (reduction in end-diastolic length). RESULTS:Pretreatment with the new, highly selective Na(+)-H+ exchange inhibitor HOE642 before occlusion reduced ischemic rigor (P < 0.05), attenuated segment shrinkage (P < 0.05) during subsequent reperfusion, dramatically reduced infarct size (P < 0.0001) and attenuated arrhythmias (P < 0.01). Inhibition of Na(+)-H+ exchange only during reperfusion by means of direct intracoronary infusion of HOE642 into the area at risk prevented reperfusion arrhythmias but had no effect on final infarct size, while treatment with intravenous HOE642 immediately before reperfusion had no detectable effects. CONCLUSION:These results indicate that inhibition of Na(+)-H+ exchange during ischemia is necessary to limit myocardial necrosis secondary to transient coronary occlusion, and that this action could by mediated by a protective effect against ischemic contracture. Inhibition of Na(+)-H+ exchange only during reperfusion has a partial and transient beneficial effect, but only when the inhibitor reaches the area at risk before reflow.
journal_name
Cardiovasc Resjournal_title
Cardiovascular researchauthors
Garcia-Dorado D,González MA,Barrabés JA,Ruiz-Meana M,Solares J,Lidon RM,Blanco J,Puigfel Y,Piper HM,Soler-Soler Jdoi
10.1016/s0008-6363(97)00106-5subject
Has Abstractpub_date
1997-07-01 00:00:00pages
80-9issue
1eissn
0008-6363issn
1755-3245pii
S0008636397001065journal_volume
35pub_type
杂志文章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
pub_type： 杂志文章
doi：
更新日期：1995-04-01 00:00:00
abstract：:The potent anaphylatoxin C3a was measured in the peripheral blood of eleven patients receiving radiocontrast agents whilst undergoing coronary angiography. In seven patients C3a levels were raised during this procedure and in three of these the anaphylatoxin was increased between four and tenfold. In four patients C3a...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1093/cvr/19.2.85
更新日期：1985-02-01 00:00:00
abstract：OBJECTIVES:We investigated whether Angiotensin II (Ang II) modulates peripheral chemoreflex function through carotid body (CB) chemoreceptors in chronic heart failure (CHF). METHODS:We measured renal sympathetic nerve activity (RSNA) in response to graded hypoxia before and after intravenous administration of Ang II (...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1016/j.cardiores.2006.03.017
更新日期：2006-07-01 00:00:00
abstract：OBJECTIVE:Diastolic dysfunction is a characteristic finding of the aged mammalian heart. Parvalbumin acts as a Ca2+ sink and enhances relaxation in skeletal muscle, and overexpression of parvalbumin in myocardium increased cardiac relaxation in vitro as well as in vivo. Therefore, the objective of this study is to test...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1016/j.cardiores.2004.06.028
更新日期：2005-05-01 00:00:00
abstract：AIMS :Activation of the angiotensin (Ang)-(1-7)/Mas receptor (R) axis protects from sympathetic overactivity. Endocytic trafficking is an essential process that regulates receptor (R) function and its ultimate cellular responses. We investigated whether the blunted responses to Ang-(1-7) in hypertensive rats are associ...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1093/cvr/cvz332
更新日期：2020-10-01 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
pub_type： 杂志文章
doi：
更新日期：1995-01-01 00:00:00
abstract：:To determine the effect of an anteroseptal myocardial infarction on right ventricular systolic and diastolic function, we studied 12 pigs before and 1 h after left anterior descending coronary artery occlusion. Total arterial occlusion was achieved by the percutaneous, transcatheter placement of a 1 mm Teflon plug int...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1093/cvr/23.1.46
更新日期：1989-01-01 00:00:00
abstract：:The effect of digoxin, at two different inotropic levels, was examined in normo- and hyperkalaemic dogs. For similar inotropic responses, normo- and hyperkalaemic dogs had similar levels of (Na+, K+)-ATPase inhibition and microsomal-bound digoxin. ...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1093/cvr/9.4.515
更新日期：1975-07-01 00:00:00
abstract：AIMS:Cholesteryl ester transfer protein (CETP) has a well-established role in lipoprotein metabolism, but the effect of its overexpression or inhibition on the efficiency of reverse cholesterol transport (RCT) is unclear. METHODS AND RESULTS:Neither overexpression of CETP nor treatment with CETP inhibitor Torcetrapib ...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1093/cvr/cvm087
更新日期：2008-03-01 00:00:00
abstract：:Exogenous angiotensin II causes noradrenaline supersensitivity in rat mesenteric vasculature preparations. The noradrenaline supersensitivity of tissues from renal/salt hypertensive rats, with low plasma renin activity, is not caused by endogenous angiotensin II since it was unaffected by Sar1 Ileu8 angiotensin II. Di...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1093/cvr/10.2.232
更新日期：1976-03-01 00:00:00
abstract：:The role of the mitochondrial ATP-sensitive potassium channel (mK(ATP)) in ischemic preconditioning and cardioprotection is reviewed. A great deal of accumulated evidence implicatese opening of this channel as an important step in the anti-infarct effect of ischemic preconditioning. Recent studies, however, reveal tha...
journal_title：Cardiovascular research
pub_type： 杂志文章,评审
doi：10.1016/s0008-6363(02)00439-x
更新日期：2002-08-15 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
pub_type： 杂志文章
doi：10.1016/s0008-6363(98)00270-3
更新日期：1999-04-01 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
pub_type： 杂志文章
doi：
更新日期：1995-12-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to determine whether exercise training could precondition the myocardium against hydrogen peroxide (H(2)O(2))-induced damage. METHODS:Male Fischer 344 rats ran on a treadmill for 9 weeks (60 min/day, 22 m/min, 6 degrees grade, 5 days/week). Isolated perfused working hearts from ...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1016/s0008-6363(03)00285-2
更新日期：2003-06-01 00:00:00
abstract：OBJECTIVES:To investigate the role of ventricular and atrial beta-adrenoceptor activation by isoprenaline in the genesis of rhythm disorders and risk of fibrillation in the healthy or ischaemic heart. METHODS:The study was performed in anaesthetized, open-chest pigs. Electrical fibrillation threshold (EFT) of the vent...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1016/s0008-6363(96)00156-3
更新日期：1996-12-01 00:00:00
abstract：:Angiotensin II (AII) plays a critical role in cardiac remodeling. This peptide promotes cardiac myocyte hypertrophy and cardiac fibroblast interstitial fibrotic changes associated with left ventricular hypertrophy, post myocardial infarction remodeling and congestive heart failure. AII mediates cardiac myocyte hypertr...
journal_title：Cardiovascular research
pub_type： 杂志文章,评审
doi：10.1016/s0008-6363(00)00044-4
更新日期：2000-05-01 00:00:00
abstract：OBJECTIVE:Smooth muscle cell proliferation and migration are the predominant responses to intimal and medial injury after percutaneous transluminal coronary angioplasty. The in vivo inhibitory effect of heparin on these responses is well documented. To test the hypothesis that the antiproliferative effect of heparin in...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1093/cvr/27.7.1209
更新日期：1993-07-01 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
pub_type： 杂志文章
doi：
更新日期：1995-11-01 00:00:00
abstract：OBJECTIVE:In several cell types, proteasome inhibitors like carbobenzoxyl-leucinyl-leucinyl-leucinal (MG132) induce the 72 kDa heat shock protein (Hsp72) and exert cell protective effects. However, data in cardiomyocytes are currently lacking. METHODS AND RESULTS:We investigated the effects of MG132 in cultured neonat...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1016/s0008-6363(02)00232-8
更新日期：2002-04-01 00:00:00
abstract：OBJECTIVE:Intercellular adhesion molecule (ICAM)-1 is an immunoglobulin-like cell adhesion molecule expressed by several cell types, including proliferating vascular smooth muscle cells (VSMC). Cross-linking ICAM-1 on the surface of different cell types has previously been shown to cause an increase in cellular activat...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1016/s0008-6363(01)00207-3
更新日期：2001-06-01 00:00:00
abstract：OBJECTIVE:The factors involved in restenosis after balloon angioplasty are poorly characterized but the local concentration of the potent mitogens angiotensin II (AII) and thrombin is known to be increased at sites of vascular injury. We investigated the possibility of a synergistic interaction between AII and thrombin...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1016/s0008-6363(97)00296-4
更新日期：1998-04-01 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
pub_type： 杂志文章,评审
doi：10.1016/j.cardiores.2003.11.036
更新日期：2004-02-15 00:00:00
abstract：OBJECTIVE:We recently showed that mitochondrial coupling factor 6 (CF6) is present as a pressor substance and a prostacyclin inhibitor in systemic circulation. However, the regulation mechanism for circulating CF6 is unknown. We investigated the role of tumor necrosis factor-alpha (TNF-alpha) in the generation and rele...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1016/j.cardiores.2004.01.031
更新日期：2004-06-01 00:00:00
abstract：AIMS:Chronic pressure or volume overload induce concentric vs. eccentric left ventricular (LV) remodelling, respectively. Previous studies suggest that distinct signalling pathways are involved in these responses. NADPH oxidase-4 (Nox4) is a reactive oxygen species-generating enzyme that can limit detrimental cardiac r...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1093/cvr/cvz331
更新日期：2021-01-01 00:00:00
abstract：AIMS:n-3 Polyunsaturated fatty acids (PUFAs) are known to protect the cardiovascular system and improve blood pressure control. These important dietary constituents are converted into bioactive metabolites, but their role in regulation of the cardiovascular system is unclear. In particular, the functions of the cytochr...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1093/cvr/cvq411
更新日期：2011-05-01 00:00:00
abstract：AIMS:Proliferation of mammalian cardiomyocytes stops during the first weeks after birth, preventing the heart from regenerating after injury. Recently, several studies have indicated that induction of cardiomyocyte proliferation can be utilized to regenerate the mammalian heart. Thus, it is important to identify novel ...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1093/cvr/cvp360
更新日期：2010-03-01 00:00:00
abstract：OBJECTIVE:Vascular endothelial growth factor (VEGF), secreted by vascular cells and a variety of tumour cells, is a potent angiogenic factor. Since nitric oxide (NO) seems to play a key role in the VEGF-induced proliferation of endothelial cells, the aim of the present study was to determine whether VEGF stimulates end...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1016/s0008-6363(98)00228-4
更新日期：1999-03-01 00:00:00
abstract：:Cardiomyocytes are long-lived post-mitotic cells with limited regenerative capacity. Proper cardiomyocyte function depends critically on the maintenance of a healthy homeostasis of protein expression, folding, assembly, trafficking, function, and degradation, together commonly referred to as proteostasis. Impairment o...
journal_title：Cardiovascular research
pub_type： 杂志文章,评审
doi：10.1093/cvr/cvv265
更新日期：2016-04-01 00:00:00
abstract：AIMS:SR-B1 is a cholesterol transporter that exerts anti-atherogenic properties in liver and peripheral tissues in mice. Bone marrow (BM) transfer studies suggested an atheroprotective role in cells of haematopoietic origin. Here, we addressed the specific contribution of SR-B1 in the monocyte/macrophage. METHODS AND ...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1093/cvr/cvz138
更新日期：2020-03-01 00:00:00
abstract：OBJECTIVE:While natriuretic peptides can inhibit growth of vascular muscle cells (VSMC), controversy exists as to whether this effect is mediated via the guanylate cyclase-coupled receptors, NPR-A and NPR-B, or the clearance receptor, NPR-C. The original aim of this study was to examine the mechanism by which the NPR-C...
journal_title：Cardiovascular research
pub_type： 杂志文章
doi：10.1016/s0008-6363(97)00086-2
更新日期：1997-07-01 00:00:00
