Abstract:
:In the adult cardiac myocyte the functional and structural integrity of the sarcolemma depends on the presence of calcium ions in the extracellular fluid. Ultrastructural damage to the myocardial cell after Ca is repleted following brief periods of Ca depletion includes (1) sarcolemmal disruption, (2) mitochondrial damage and (3) severely contracted myofibrils. Ca depletion is the necessary first step in the generation of the paradox, presumably altering the sarcolemmal permeability to Ca. The structural basis for the altered membrane permeability is not known. In the adult rabbit heart two major sarcolemmal defects occur with Ca depletion: (1) 90% of Ca-depleted cells have separation of the layers of the glycocalyx over 30% of their surface. (2) Within the bilayer the intramembrane particles on the P face appear to be reoriented. Hypothermia and cadmium substitution protect against the functional manifestations of the paradox and prevent separation of the glycocalyx and the intramembrane particle changes as well. While the paradox is found in many species, the adult rat myocardium appears to be functionally more sensitive than the adult rabbit. With Ca depletion the adult rat has 65.9 +/- 4.6% of its myocardial cell surface separated while the adult rabbit has 33.4 +/- 2.1%. On the other hand, both the rat and rabbit are insensitive to the paradox before 6 days of age. Three-day old rat hearts exposed for 20 min to [Ca] less than 10(-8) mol l-1 show an intact glycocalyx in 95% of their cells. By 20 days all cells show separation of the glycocalyx over 38.5% +/- 1.6% of their surface.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Eur Heart Jjournal_title
European heart journalauthors
Frank JSdoi
10.1093/eurheartj/4.suppl_h.23subject
Has Abstractpub_date
1983-12-01 00:00:00pages
23-7eissn
0195-668Xissn
1522-9645journal_volume
4 Suppl Hpub_type
杂志文章abstract::The effect of 24 weeks of treatment with simvastatin, a new HMG coenzyme A reductase inhibitor (dosages of 20 and 40 mg day-1) on serum lipid, lipoprotein and apolipoprotein A-I and B concentrations as well as safety parameters and subjective side effects were studied in 11 patients with familial (FH) and 10 patients ...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a062541
更新日期:1988-05-01 00:00:00
abstract::In a prospective study, an elderly group of patients (n = 63, 47 male, 16 female, age 40-65 years) was examined before and after open-heart surgery under cardiopulmonary bypass: postoperatively, 19 patients (30%) showed no clinical neuropsychiatric symptoms, whereas in 35 patients (56%) mild or transient neurological ...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/14.7.885
更新日期:1993-07-01 00:00:00
abstract:AIMS:The prognostic role of time-to-treatment in primary angioplasty is still a matter of debate. The aim of our study was to evaluate the relationship between time-to-treatment and myocardial perfusion in patients with ST-segment-elevation myocardial infarction (STEMI) treated by primary angioplasty. METHODS AND RESU...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1016/j.ehj.2004.03.021
更新日期:2004-06-01 00:00:00
abstract::This report describes the results of right ventricle endomyocardial biopsies from 26 subjects (mean age 27 +/- 10 years) with premature ventricular beats and normal cardiac anatomy and mechanical function. Light microscopy examination revealed normal myocardium in 10 subjects (38%), acute myocarditis in two (7%), bord...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a060248
更新日期:1992-06-01 00:00:00
abstract::The effects of the calcium antagonist, diltiazem (D), on left ventricular (LV) response to postextrasystolic potentiation (PESP) were investigated in 15 coronary artery disease patients. Several haemodynamic and LV function parameters, as well as regional wall kinetics, were analysed. During LV angiography, which was ...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a059772
更新日期:1990-07-01 00:00:00
abstract:BACKGROUND:The calculation of valve resistance (R) rather than aortic valve area (AVA) has been proposed for the assessment of aortic stenosis (AS), based on the claim that it is less flow-dependent. Even more importantly, valve resistance has been reported to distinguish between truly severe and "pseudosevere" AS in p...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1016/j.ehj.2004.02.011
更新日期:2004-05-01 00:00:00
abstract:AIMS:Short-QT syndrome 1 (SQT1) is an inherited channelopathy with accelerated repolarization due to gain-of-function in HERG/IKr. Patients develop atrial fibrillation, ventricular tachycardia (VT), and sudden cardiac death with pronounced inter-individual variability in phenotype. We generated and characterized transg...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehy761
更新日期:2019-03-07 00:00:00
abstract:Aims:To elucidate the effects of intensive LDL-C lowering treatment with a standard dose of statin and ezetimibe in patients with dyslipidaemia and high risk of coronary events, targeting LDL-C less than 70 mg/dL (1.8 mmol/L), compared with standard LDL-C lowering lipid monotherapy targeting less than 100 mg/dL (2.6 mm...
journal_title:European heart journal
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1093/eurheartj/ehx162
更新日期:2017-08-01 00:00:00
abstract:AIM:Ventricular fibrosis is promoted by many effectors that chronically activate phospholipase D (PLD), and induces cardiac dysfunction and heart failure in cardiovascular diseases. Since ethanolamine is a product of PLD, we hypothesised that an administration of an analogue of ethanolamine, N-methylethanolamine (MEA),...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1016/j.ehj.2004.05.003
更新日期:2004-07-01 00:00:00
abstract:AIMS:To assess the long-term benefit-risk ratio of drug-eluting (DES) vs. bare-metal stents (BMS) relative to stent size. METHODS AND RESULTS:All 826 consecutive BASKET (BAsel Stent Kosten-Effektivitäts Trial) patients randomized 2:1 to DES vs. BMS were followed after 3 years. Data were analysed separately for patient...
journal_title:European heart journal
pub_type: 杂志文章,随机对照试验
doi:10.1093/eurheartj/ehn516
更新日期:2009-01-01 00:00:00
abstract:BACKGROUND:The CONSENSUS trial was the first study to show prognostic improvement by an ACE inhibitor. Patients in NYHA class IV heart failure were treated with enalapril or placebo. After study completion (average 183 days) all patients were offered open-label enalapril therapy. This paper reports on the survival at t...
journal_title:European heart journal
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1053/euhj.1998.1098
更新日期:1999-01-01 00:00:00
abstract::In a prospective serial study of 96 patients with acute myocardial infarction, two dimensional echocardiography identified left ventricular thrombus in 18 patients. The majority of thrombi (15) developed within the first 4 days after admission. In three patients thrombi were identified for the first time 4 months afte...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a061470
更新日期:1983-05-01 00:00:00
abstract:BACKGROUND:the prototype of a transoesophageal echocardiographic transducer with a rotatable cross-sectional scanning plane underwent initial evaluation. METHODS:the 5 MHz, phased array, 64 element transducer is incorporated into a 16 by 11 by 40 mm echoscope tip. The instrument also has pulsed wave and colour flow Do...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a060338
更新日期:1992-09-01 00:00:00
abstract::Some studies provide a link between the width of QRS complexes and late potentials occurring at the end of the QRS complex in signal-averaged recordings. The purpose of this study was to compare three methods of QRS duration measurement: the conventional 12 lead ECG, the Frank vectorcardiogram (VCG) and the signal-ave...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a060375
更新日期:1994-01-01 00:00:00
abstract::In a total of 339 patients with hypertrophic cardiomyopathies (typical HOCM, n = 224; atypical HOCM, n = 30; HNCM, n = 80) the clinical course, the Sokolow-Lyon index in the ECG and the prognosis as demonstrated by cumulative survival rates were analysed to get more differentiated information for the characterization ...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/4.suppl_f.145
更新日期:1983-11-01 00:00:00
abstract:AIMS:The Pacing to Avoid Cardiac Enlargement (PACE) trial is a prospective, double-blinded, randomized, multicentre study that reported the superiority of biventricular (BiV) pacing to right ventricular apical (RVA) pacing in the prevention of left ventricular (LV) adverse remodelling and deterioration of systolic func...
journal_title:European heart journal
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1093/eurheartj/ehr336
更新日期:2011-10-01 00:00:00
abstract::Oxygen supplementation is a standard treatment for all patients who present with acute coronary syndrome, regardless of oxygen saturation levels. Most of the data regarding the function of oxygen in myocardial infarction is based on a limited number of basic and clinical studies. We performed a systematic literature r...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:10.1093/eurheartj/eht110
更新日期:2013-06-01 00:00:00
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journal_title:European heart journal
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1093/oxfordjournals.eurheartj.a015226
更新日期:1997-02-01 00:00:00
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journal_title:European heart journal
pub_type: 杂志文章
doi:10.1053/euhj.2001.3115
更新日期:2002-06-01 00:00:00
abstract::The Alliance for Biomedical Research in Europe, co-founded by the European Society of Cardiology, has persuaded the European Parliament to move towards European Union-wide means of better directing and coordinating biomedical research, from the laboratory bench to the marketplace. ...
journal_title:European heart journal
pub_type: 新闻
doi:
更新日期:2014-04-01 00:00:00
abstract::The antibody prevalence data indicate that C. pneumoniae infections are common worldwide and more frequently occur in middle-aged and elderly males than in females. C. pneumoniae infections are first acquired in childhood in heavily populated areas, whereas in northern countries, first infections are generally at teen...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:
更新日期:1993-12-01 00:00:00
abstract::The purpose of this study was to evaluate the accuracy of adenosine Tc-99m sestamibi single photon emission computed tomography (SPECT) in the detection of jeopardized myocardium early after acute myocardial infarction. Coronary arteriography and myocardial scintigraphy were performed in 50 consecutive patients with a...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a061074
更新日期:1995-09-01 00:00:00
abstract::The objectives of this study were to assess the impact of the new 'Shahal' (pre-hospital cardiac service) on subscribers' 'decision time'. A professional 24-h mobile emergency cardiac service has been set up, monitored by intensive care nurses via a central computerized operation unit. All subscribers carry a cardiobe...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/16.1.129
更新日期:1995-01-01 00:00:00
abstract::The prevalence of coronary heart disease (CHD) was determined in a general population sample of 9141 Icelandic men aged 34-79 years, and the prevalence of four different forms of CHD was estimated separately: symptomatic infarction fulfilling WHO-MONICA criteria for definite myocardial infarction; myocardial infarctio...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/14.5.584
更新日期:1993-05-01 00:00:00
abstract::Ten patients with chronic intermittent claudication were included in a double-blind, randomized cross-over study of placebo, propranolol 80 mg b.i.d. and metoprolol 100 mg b.i.d., each given for two months. At the end of each treatment period, the patients were tested on a treadmill and the time to first claudication ...
journal_title:European heart journal
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1093/oxfordjournals.eurheartj.a061440
更新日期:1983-03-01 00:00:00
abstract::Based on a study of 20 patients operated on between the ages of 21 and 38 for congenital valvular aortic stenosis, the distinguishing features of congenital aortic valvular stenosis in adults are reviewed: valvular calcification (75%), valvular dome rarely present (10%), usually moderate cardiac disability (70%), dimi...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/9.suppl_e.37
更新日期:1988-04-01 00:00:00
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journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehw159
更新日期:2017-03-21 00:00:00
abstract::Type 2 diabetes mellitus (T2DM) is characterized by multiple pathophysiologic abnormalities. With time, multiple glucose-lowering medications are commonly required to reduce and maintain plasma glucose concentrations within the normal range. Type 2 diabetes mellitus individuals also are at a very high risk for microva...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:10.1093/eurheartj/ehv239
更新日期:2015-09-07 00:00:00
abstract:BACKGROUND:Recent studies have shown that left ventricular geometric adaptation to hypertension is complex. The spectrum of geometric adaptations in a general population and its relationship to systolic and diastolic function has, however, not been investigated. OBJECTIVES AND METHODS:This echocardiographic and Dopple...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a014795
更新日期:1996-12-01 00:00:00
abstract:AIMS:N-terminal pro-brain natriuretic peptide (NT-proBNP) levels predict outcomes in ST-elevation myocardial infarction patients treated with fibrinolysis or primary percutaneous coronary intervention (PCI). However, its role in facilitated PCI has not yet been assessed; it may be a tool to evaluate the lower event rat...
journal_title:European heart journal
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1093/eurheartj/ehp246
更新日期:2009-09-01 00:00:00