Abstract:
AIMS:We sought to define the mechanisms and correlates of leptin's vascular actions in humans with coronary artery disease. METHODS AND RESULTS:In 131 patients (age 65.7+/-0.7 years mean+/-SEM), ex vivo vascular reactivity to leptin (10(-13)-10(-7) M) was assessed in saphenous vein (SV) rings. Leptin led to SV relaxation (maximal relaxation 24.5+/-1.6%). In separate experiments, relaxation to leptin was unaffected by L-NMMA (17.4+/-3.4 vs.17.8+/-3.3%, P = 0.9) or endothelial denudation (17.4+/-4.4 vs. 22.5+/-3.0%, P = 0.4). We explored the possibility that leptin's vascular effects are mediated via smooth muscle hyperpolarization. In the presence of KCl (30 mmol/L) to inhibit hyperpolarization, the vasodilator effect of leptin was completely blocked (0.08+/-4.1%, P < 0.001 vs. control). Similar results were demonstrated in internal mammary artery rings. The only independent correlate of leptin-mediated vasodilatation was plasma TNF-alpha (r = 0.25, P < 0.05). Neither body mass index nor waist circumference correlated with leptin-mediated vasorelaxation. This lack of a correlation with markers of total body fat/fat distribution suggests that leptin resistance may not extend to the vasculature. CONCLUSION:Leptin is a vasoactive peptide in human SV and internal mammary artery. Its action is not nitric oxide or endothelial-dependent. Markers of body fat did not correlate with leptin-mediated vasodilatation, raising the intriguing possibility of selective resistance to leptin's actions.
journal_name
Eur Heart Jjournal_title
European heart journalauthors
Momin AU,Melikian N,Shah AM,Grieve DJ,Wheatcroft SB,John L,El Gamel A,Desai JB,Nelson T,Driver C,Sherwood RA,Kearney MTdoi
10.1093/eurheartj/ehi831subject
Has Abstractpub_date
2006-10-01 00:00:00pages
2294-9issue
19eissn
0195-668Xissn
1522-9645pii
ehi831journal_volume
27pub_type
杂志文章abstract:AIMS:Monocytes are critical mediators of healing following acute myocardial infarction (AMI), making them an interesting target to improve myocardial repair. The purpose of this study was a gain of insight into the source and recruitment of monocytes following AMI in humans. METHODS AND RESULTS:Post-mortem tissue spec...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/eht331
更新日期:2014-02-01 00:00:00
abstract::Diastolic heart disease is common and appears to be the primary abnormality in a substantial proportion of all patients with CHF. The epidemiology and natural history of the condition appears different to that of systolic heart failure, resulting in significant morbidity although contributing little to overall mortali...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:10.1093/oxfordjournals.eurheartj.a060453
更新日期:1994-12-01 00:00:00
abstract:AIMS:Release of progenitor cells is observed during inflammatory conditions and contributes to neovascularization. We, therefore, sought to investigate the relationship of circulating progenitor cells and interleukin (IL)-8 in acute myocardial infarction (AMI). METHODS AND RESULTS:From patients with stable angina and ...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehi761
更新日期:2006-05-01 00:00:00
abstract::This study analyses the immediate outcome and the risk of recurrent restenosis in patients who, at the time of repeat coronary angioplasty for a first restenosis, had unstable (n = 50), 19%) or stable (n = 218, 81%) angina. Successful angioplasty was accomplished in 250 (93%) patients, 222 (89%) of whom had follow-up ...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/14.2.235
更新日期:1993-02-01 00:00:00
abstract::In single vessel disease angioplasty can replace surgery in the majority of patients. In cases of recurrence at the site of angioplasty or in the case of progression elsewhere, a second intervention can be performed. Thus, in the majority of patients surgery can be replaced; in the minority it can be delayed. In patie...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/8.suppl_f.47
更新日期:1987-09-01 00:00:00
abstract::To determine the neurohormonal response to angiotensin-converting enzyme (ACE) inhibition after acute myocardial infarction, 36 patients presenting within 6 h of the onset of chest pain were studied in a single regional cardiology service. In this double-blind study, 13 patients were randomized to receive captopril, 1...
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.a060995
更新日期:1995-06-01 00:00:00
abstract:AIMS:Recent randomized trials suggest that intensive glycaemic control fails to reduce heart failure-related events in patients with diabetes. The molecular cues underlying persistent myocardial damage despite normoglycaemia restoration remain elusive. MicroRNAs (miRNAs), a class of small non-coding RNAs, orchestrate t...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehv599
更新日期:2016-02-07 00:00:00
abstract::Two patients with myocardial bridging of the left anterior descending coronary artery associated with myocardial infarction are described. One of them died from acute cerebral emboli related to cardiac thrombosis in a left ventricular aneurysm. The other died suddenly while sleeping. Both patients were found to have a...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a059530
更新日期:1989-06-01 00:00:00
abstract::The management of left ventricular hypertrophy (LVH) presupposes that the patient is identified by echocardiography and is carefully evaluated for risk stratification, taking into consideration possible associated complications. The role of non-pharmacological treatment is limited, except in obese patients. Drug treat...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:10.1093/eurheartj/14.suppl_d.22
更新日期:1993-07-01 00:00:00
abstract:AIMS:Anecdotal observations suggest that sub-clinical electrophysiological manifestations of arrhythmogenic right ventricular cardiomyopathy (ARVC) develop before detectable structural changes ensue on cardiac imaging. To test this hypothesis, we investigated a murine model with conditional cardiac genetic deletion of ...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehr472
更新日期:2012-08-01 00:00:00
abstract:AIM:Short-term psychological stress is associated with an immediate physiological response and may be associated with a transiently higher risk of cardiovascular events. The aim of this study was to determine whether brief episodes of anger trigger the onset of acute myocardial infarction (MI), acute coronary syndromes...
journal_title:European heart journal
pub_type: 杂志文章,meta分析,评审
doi:10.1093/eurheartj/ehu033
更新日期:2014-06-01 00:00:00
abstract::A group of investigators met for two days in Santorini, Greece, to discuss progress in the field of identification and treatment of high risk/vulnerable atherosclerotic plaques and patients. Many differences in the manner in which terms are being utilized were noted. It was recognized that increased understanding of t...
journal_title:European heart journal
pub_type: 共识发展会议,杂志文章,评审
doi:10.1016/j.ehj.2004.01.002
更新日期:2004-06-01 00:00:00
abstract::Among 369 patients with native valve infective endocarditis observed during a 14-year period, 17 were related to S: pneumoniae. Fourteen of them were observed in the last 7 years. At the time of admission 13 exhibited purulent meningitis, 6 of them being comatose. An apparent portal of entry was present in 13 patients...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/5.suppl_c.77
更新日期:1984-10-01 00:00:00
abstract::We have evaluated overall and cardiac sympathetic activity in 47 patients undergoing coronary angiography, 27 with stable angina of at least 3 months duration, and 20 with unstable ischaemic symptoms within this period. Cardiac and overall sympathetic activity were assessed using radiotracer noradrenaline kinetic tech...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/14.6.751
更新日期:1993-06-01 00:00:00
abstract:AIMS:We hypothesized that chronic heart failure as a model of systemic hypoxia may result in systemic inflammation. The signs of a systemic inflammatory response should disappear after successful mechanical circulatory support using biventricular assist device systems. METHODS AND RESULTS:Plasma levels of cytokines (I...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1053/euhj.1997.0858
更新日期:1998-05-01 00:00:00
abstract::As regional wall motion abnormality (RWA) is the first sign of ischaemia, transoesophageal echocardiography was evaluated as a monitoring device in 51 patients undergoing abdominal aortic surgery. Wall motion of the entire left ventricular wall (nine segments) was semiquantitatively evaluated 15 min before and after a...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a060309
更新日期:1992-08-01 00:00:00
abstract::We assessed the incremental effect of cardiac catheterization upon the management of 93 adult patients with aortic and/or mitral valve disease, referred for surgical consideration. There were 52 patients with aortic valve disease, 29 with mitral valve disease and 12 with aortic and mitral valve disease. Prior to cardi...
journal_title:European heart journal
pub_type: 杂志文章
doi:
更新日期:1991-05-01 00:00:00
abstract:AIMS:Cardiac biomarkers are routinely elevated after uncomplicated cardiac surgery to levels considered diagnostic of myocardial infarction in ambulatory populations. We investigated the diagnostic power of electrocardiogram (ECG) and cardiac biomarker criteria to predict clinically relevant myocardial injury using ben...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehp134
更新日期:2009-07-01 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:AIMS:Increased cardiovascular morbidity is manifested a long time after the repair of aortic coarctation (CoA). By way of impaired flow-mediated vasodilation (FMD) and increased intima media thickness (IMT), surrogate parameters of atherosclerosis, cardiovascular risk factors (RFs) can be correlated with early vascular...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehi037
更新日期:2005-03-01 00:00:00
abstract:BACKGROUND:We evaluated prognostic value at 6 months of residual pulmonary vascular obstruction (RPVO) measured before discharge in patients with intermediate- or high-risk pulmonary embolism (PE). METHODS AND RESULTS:Prospective registry including 416 consecutive patients with intermediate- or high-risk PE who surviv...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehs365
更新日期:2013-03-01 00:00:00
abstract::Transient ischaemic episodes, defined as chest pain with ST segment elevation resolving in less than 15 min, have been encountered in 18 out of 130 patients during or in the 12h following percutaneous transluminal angioplasty (PTCA). During PTCA, ischaemic episodes occurred in 11 patients (8.5%) along with complete co...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a061669
更新日期:1984-05-01 00:00:00
abstract:Aims:Arrhythmogenic right ventricular cardiomyopathy (ARVC) is characterized by right ventricular myocardial replacement and life-threatening ventricular arrhythmias. Desmosomal gene mutations are sometimes identified, but clinical and genetic diagnosis remains challenging. Desmosomal skin disorders can be caused by de...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehy567
更新日期:2018-11-21 00:00:00
abstract:AIMS:The impact on mortality outcomes of beta-blockers and calcium blockers in post-myocardial infarction (MI) has been suggested to be related to resting heart rate (HR) reduction. A meta-regression of randomized clinical trials was carried out to assess this relationship using weighted meta-regression of logarithm of...
journal_title:European heart journal
pub_type: 杂志文章,meta分析,评审
doi:10.1093/eurheartj/ehm489
更新日期:2007-12-01 00:00:00
abstract:Aims:The burden of cardiovascular disease is increasing worldwide, which has to be reflected by cardiovascular (CV) research in Europe. CardioScape, a FP7 funded project initiated by the European Society of Cardiology (ESC), identified where CV research is performed, how it is funded and by whom. It could be transforme...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehx106
更新日期:2018-07-01 00:00:00
abstract::Spectral turbulence analysis of the signal-averaged electrocardiogram is a new method for identifying patients prone to sustained monomorphic ventricular tachycardia. In contrast to analysis in the time domain, it has been claimed to be applicable in patients with bundle branch block. The aim of this study was to asse...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a060851
更新日期:1995-12-01 00:00:00
abstract::Treatment of 8 hypertensive elderly subjects with atenolol or with labetalol did not affect exercise performance, except after the development of circulatory congestion in 1 patient. Treatment with beta blockers did not alter the response to an exercise training programme in 15 elderly patients with ischaemic heart di...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/5.suppl_e.117
更新日期:1984-11-01 00:00:00
abstract:AIMS:The aim of this study was to assess whether perioperative N-acetylcysteine (NAC), an antioxidant, prevents acute renal injury (ARI) after cardiac surgery. METHODS AND RESULTS:We performed a systematic review of randomized controlled trials (RCTs) of NAC in adult cardiac surgery patients. The RCTs were identified ...
journal_title:European heart journal
pub_type: 杂志文章,meta分析,评审
doi:10.1093/eurheartj/ehp053
更新日期:2009-08-01 00:00:00
abstract::I.S.A.M. was a prospective, placebo-controlled, double-blind multicentre trial of high-dose short-term intravenous streptokinase in acute myocardial infarction (AMI) within 6 h of the onset of symptoms. Determination of left ventricular ejection fraction (LVEF) by radionuclide ventriculography was performed 1 and 7 mo...
journal_title:European heart journal
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1093/oxfordjournals.eurheartj.a059610
更新日期:1990-10-01 00:00:00
abstract:BACKGROUND:Sixteen cases of sudden unexpected cardiac death, 15 males and one female, are known to have occurred among young Swedish orienteers from 1979 to 1992, of which seven cases occurred between 1989 and 1992. This is considered to be indicative of an increased death rate. RESULTS:Histopathological evaluation sh...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a014972
更新日期:1996-06-01 00:00:00