Abstract:
BACKGROUND:A family history of premature coronary artery disease (CAD) in a first-degree relative is an independent risk factor for coronary disease. Both genetic and environmental influences are likely to be responsible and may interact, but their relative importance is unclear. METHODS AND RESULTS:We studied endothelial function in 50 first-degree relatives (31 men, 19 women; mean age, 25+/-8 years) of patients (men < or = 45 years, women < or = 55 years) with proven CAD. All subjects were well, lifelong nonsmokers, not diabetic, and not hypertensive and took no medications. Using high-resolution external vascular ultrasound, we measured brachial artery diameter at rest and in response to reactive hyperemia (with increased flow causing an endothelium-dependent vasodilatation) and to sublingual glyceryltrinitrate (GTN, an endothelium-independent dilator). Vascular responses were compared with those of 50 healthy control subjects matched for age and sex. Flow-mediated dilatation (FMD) was impaired in the family history group (4.9+/-4.6% versus 8.3+/-3.5% in control subjects, P<.005). In contrast, GTN caused dilatation in all subjects (family history, 17.1+/-8.8%; control subjects, 19.0+/-6.3%; P=NS), suggesting that reduced FMD was due to endothelial dysfunction. When the family history subjects were subdivided, those found to have a serum cholesterol > 4.2 mmol/L (group A, n=10) had mildly impaired FMD compared with control subjects (5.5+/-5.1% versus 8.3+/-3.5%). In others whose affected relative had coronary risk factors (group B, n=24), FMD was also only slightly reduced (6.2+/-4.8% versus 8.3+/-3.5%). In contrast, subjects with no risk factors and whose affected relative had a normal cardiovascular risk factor profile (group C, n=16) had markedly impaired FMD (2.9+/-3.7% versus 8.3+/-3.5%). Although ANOVA of the three family history subgroups did not reach statistical significance (F=2.55, P=.09), pairwise analysis showed that FMD in group C was significantly impaired compared with group B (P=.026). CONCLUSIONS:Healthy young adults with a family history of premature coronary disease may have impaired endothelium-dependent dilatation, even in the absence of other cardiovascular risk factors. Those subjects, who were free of risk factors and whose affected first-degree relative was free of risk factors, had the most impaired endothelial function, suggesting a genetic influence on early arterial physiology that may be relevant to later clinical disease.
journal_name
Circulationjournal_title
Circulationauthors
Clarkson P,Celermajer DS,Powe AJ,Donald AE,Henry RM,Deanfield JEdoi
10.1161/01.cir.96.10.3378subject
Has Abstractpub_date
1997-11-18 00:00:00pages
3378-83issue
10eissn
0009-7322issn
1524-4539journal_volume
96pub_type
杂志文章相关文献
CIRCULATION文献大全abstract::In a porcine preparation of cardiac arrest, we demonstrated that there is a marked paradox of venous acidemia and arterial alkalemia. This paradox is related to decreased clearance of CO2 from the lungs when pulmonary blood flow is critically reduced. Accordingly, increased venous PCO2 rather than metabolic acidosis d...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.74.5.1071
更新日期:1986-11-01 00:00:00
abstract:BACKGROUND:Pollution by particulates has been consistently associated with increased cardiovascular morbidity and mortality. However, the mechanisms responsible for these effects are not well-elucidated. METHODS AND RESULTS:To assess to what extent and how rapidly inhaled pollutant particles pass into the systemic cir...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/hc0402.104118
更新日期:2002-01-29 00:00:00
abstract:BACKGROUND:The Na(+)/Ca(2+) exchange (NCX) extrudes Ca(2+) from cardiac myocytes, but it can also mediate Ca(2+) influx, load the sarcoplasmic reticulum with Ca(2+), and trigger Ca(2+) release from the sarcoplasmic reticulum. In ischemia/reperfusion or digitalis toxicity, increased levels of intracellular [Na(+)] ([Na(...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.101.12.1441
更新日期:2000-03-28 00:00:00
abstract:BACKGROUND:This study was designed to evaluate the effect of arglabin on the NLRP3 inflammasome inhibition and atherosclerotic lesion in ApoE2Ki mice fed a high-fat Western-type diet. METHODS AND RESULTS:Arglabin was purified, and its chemical identity was confirmed by mass spectrometry. It inhibited, in a concentrati...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/CIRCULATIONAHA.114.013730
更新日期:2015-03-24 00:00:00
abstract:BACKGROUND:Several nonpharmacological interventions, including exercise, are recommended in primary prevention of hypertension and other cardiovascular diseases in which the pathogenetic role of endothelial dysfunction has been suggested. We studied the effects of long-term aerobic exercise on endothelial function in p...
journal_title:Circulation
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1161/01.cir.100.11.1194
更新日期:1999-09-14 00:00:00
abstract::As the appreciation of structural heart disease in children and adults has increased and as catheter-based closure procedures are now being performed in clinical practice, cardiovascular physicians have multiple compelling new reasons to better understand cardiac anatomic and spatial relationships. Current 2-dimension...
journal_title:Circulation
pub_type: 杂志文章,评审
doi:10.1161/CIRCULATIONAHA.107.740977
更新日期:2008-05-06 00:00:00
abstract::Peripheral arterial disease is one manifestation of systemic atherosclerosis. The prevalence of peripheral arterial disease increases with the age of the population. It is important to remember the significant association of coincident coronary artery disease, which is the major cause of mortality in these patients. R...
journal_title:Circulation
pub_type: 杂志文章,评审
doi:10.1161/CIRCULATIONAHA.106.621391
更新日期:2007-11-06 00:00:00
abstract:BACKGROUND:Iron overload has an increasing worldwide prevalence and is associated with significant cardiovascular morbidity and mortality. Elevated iron levels in the myocardium lead to impaired systolic and diastolic function and elevated oxidative stress. Taurine accounts for 25% to 50% of the amino acid pool in myoc...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.CIR.0000124229.40424.80
更新日期:2004-04-20 00:00:00
abstract:BACKGROUND:High blood pressure (BP) is a major risk factor for cardiovascular diseases (CVDs), the leading cause of mortality worldwide. Both heritable and lifestyle risk factors contribute to elevated BP levels. We aimed to investigate the extent to which lifestyle factors could offset the effect of an adverse BP gene...
journal_title:Circulation
pub_type: 临床试验,杂志文章
doi:10.1161/CIRCULATIONAHA.117.030898
更新日期:2018-02-13 00:00:00
abstract:BACKGROUND:In humans, angiotensin converting enzyme (ACE) inhibition attenuates the vasoconstriction induced by sympathetic stimulation in a number of peripheral districts. Whether this is also the case in the coronary circulation is unknown, however. METHODS AND RESULTS:In nine normotensive patients with angiographic...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.85.6.2004
更新日期:1992-06-01 00:00:00
abstract:BACKGROUND:Chronic heart failure is associated with endothelial dysfunction including impaired endothelium-mediated, flow-dependent dilation (FDD). Since endothelial function is thought to play an important role in coordinating tissue perfusion and modulating arterial compliance, interventions to improve endothelial dy...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.93.2.210
更新日期:1996-01-15 00:00:00
abstract:BACKGROUND:Esophageal injury is a potential complication after intraoperative or percutaneous transcatheter ablation of the posterior aspect of the left atrium. Understanding the spatial relations between the esophagus and the left atrium is essential to reduce risks. METHODS AND RESULTS:We examined by gross dissectio...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/CIRCULATIONAHA.105.551291
更新日期:2005-09-06 00:00:00
abstract:BACKGROUND:Magnetic resonance (MR) phase-shift velocity mapping is an established method for measurement of nonturbulent intravascular flow. Shortening the echo time of the MR sequence to 3.6 msec allowed application of the technique to turbulent jet flow. The objective of this study was validation of MR jet velocity m...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.87.4.1239
更新日期:1993-04-01 00:00:00
abstract:BACKGROUND:approximately half of patients with heart failure die suddenly as a result of ventricular arrhythmias. Although abnormal Ca(2+) release from the sarcoplasmic reticulum through ryanodine receptors (RyR2) has been linked to arrhythmogenesis, the molecular mechanisms triggering release of arrhythmogenic Ca(2+) ...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/CIRCULATIONAHA.110.982298
更新日期:2010-12-21 00:00:00
abstract:BACKGROUND:Creation of a complete bidirectional inferior vena cava-tricuspid annulus isthmus block (CBIB) by radiofrequency catheter ablation is now a well-accepted criterion for prevention of common atrial flutter (AFl) recurrences. However, some patients still complain of palpitations after ablation, and it is not kn...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.99.4.534
更新日期:1999-02-02 00:00:00
abstract:BACKGROUND:Serotonin (5-hydroxytryptamine; 5-HT) overproduction is responsible for cardiac valvular disease in patients with carcinoid tumors. Reduced 5-HT inactivation is one proposed mechanism of the valvulopathy observed in individuals treated with the appetite suppressants fenfluramine and phentermine. One key prot...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/CIRCULATIONAHA.105.554667
更新日期:2006-01-03 00:00:00
abstract:BACKGROUND:Vasodilatory shock is a potentially lethal complication of severe disease in critically ill patients. Currently, catecholamines are the most widely used vasopressor agents to support blood pressure, but loss of catecholamine pressor effects is a well-known clinical dilemma. Arginine vasopressin (AVP) has rec...
journal_title:Circulation
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1161/01.CIR.0000066692.71008.BB
更新日期:2003-05-13 00:00:00
abstract::Experience with percutaneous transluminal coronary angioplasty (PTCA) of multiple vessels was reviewed to assess short-term outcome and long-term results. PTCA of multiple vessels was performed in 100 of the initial 500 patients (20%) who underwent PTCA at the Medical College of Virginia between July 1979 and August 1...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.72.6.1314
更新日期:1985-12-01 00:00:00
abstract:BACKGROUND:Increased consumption of sugar-sweetened beverages (SSBs) has been associated with an elevated risk of obesity, metabolic syndrome, and type II diabetes mellitus. However, the effects of SSB consumption on blood pressure (BP) are uncertain. The objective of this study was to determine the relationship betwee...
journal_title:Circulation
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1161/CIRCULATIONAHA.109.911164
更新日期:2010-06-08 00:00:00
abstract:BACKGROUND:Single-site ventricular pacing in patients with heart failure, atrial fibrillation, and severe atrioventricular (AV) nodal block risks the generation of discoordinate contraction. Whether altering the site of stimulation can offset this detrimental effect and what role sequential right ventricular-left ventr...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.CIR.0000148177.82319.C7
更新日期:2004-11-30 00:00:00
abstract::We performed transventricular pulmonary valvotomy as initial surgery in 22 consecutive patients with pulmonary atresia and intact ventricular septum who had a patent infundibulum. Nineteen patients also had placement of a central aortopulmonary shunt. All patients survived surgery, and 16 patients have had preoperativ...
journal_title:Circulation
pub_type: 杂志文章
doi:
更新日期:1990-11-01 00:00:00
abstract:BACKGROUND:Increased activity of the sympathetic nervous system contributes significantly to the pathophysiology of heart failure. However, cardiac efferent sympathetic function has not been well characterized in this disorder. In this study, we evaluated cardiac sympathetic innervation using [123I]metaiodobenzylguanid...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.89.6.2843
更新日期:1994-06-01 00:00:00
abstract:BACKGROUND:Inhaled nitric oxide (NO) is a potent and selective pulmonary vasodilator, which induces cGMP synthesis by activating soluble guanylate cyclase (sGC) in ventilated lung regions. Carbon monoxide (CO) has also been proposed to influence smooth muscle tone via activation of sGC. We examined whether direct stimu...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.CIR.0000144469.01521.8A
更新日期:2004-10-12 00:00:00
abstract:BACKGROUND:Persons with end-stage renal disease and those with lesser degrees of chronic kidney disease (CKD) have an increased risk of death after myocardial infarction (MI) that is not fully explained by associated comorbidities. Future cardiovascular event rates and the relative response to therapy in persons with m...
journal_title:Circulation
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1161/01.CIR.0000149806.01354.BF
更新日期:2004-12-14 00:00:00
abstract::The purpose of this investigation was to determine whether blood vessels could develop de novo between an extracardiac artery and a collateral-dependent zone of the heart and to quantify the nutritive blood flow afforded by the new vessels. We also adapted the preparation so that angiogenically active agents could be ...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.82.4.1449
更新日期:1990-10-01 00:00:00
abstract:BACKGROUND:The anti-inflammatory cytokine interleukin-10 (IL-10) has been detected in the plasma of patients with myocardial ischemia/reperfusion. The aim of our study was to investigate the role of endogenously produced IL-10 in myocardial ischemia/reperfusion. METHODS AND RESULTS:In the present study, we used wild-t...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.101.9.1019
更新日期:2000-03-07 00:00:00
abstract::Fifty patients who presented with angina pectoris were studied to examine the disturbances of regional myocardial perfusion during stress. Each patient underwent 16-point precordial mapping of the ECG during an exercise test, and coronary and left ventricular angiography. Regional myocardial perfusion was assessed usi...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.64.1.83
更新日期:1981-07-01 00:00:00
abstract:BACKGROUND:An inverse association between moderate alcohol consumption and coronary heart disease (CHD) has been observed in several epidemiological studies. To assess whether a similar association exists among diabetics, we examined the relation between light to moderate alcohol consumption and CHD in men with and wit...
journal_title:Circulation
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1161/01.cir.102.5.500
更新日期:2000-08-01 00:00:00
abstract:BACKGROUND:Oxidative stress has been implicated in vascular injury and atherogenesis, and antioxidant treatment has shown favorable results in preclinical studies. Despite this, antioxidant therapy has failed to show benefit in clinical trials. Failure of antioxidants in clinical trials may be partly because such thera...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.CIR.0000128034.70732.C2
更新日期:2004-05-25 00:00:00
abstract:BACKGROUND:Radiofrequency catheter ablation of concealed posteroseptal accessory pathways (APS) has been a relatively difficult task for electrophysiologists. Without a detailed mapping procedure, the left versus the right posteroseptal AP could not be distinguished. We investigated the electrophysiological characteris...
journal_title:Circulation
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1161/01.cir.93.5.982
更新日期:1996-03-01 00:00:00