Physical activity and coronary heart disease in men: The Harvard Alumni Health Study.

abstract：BACKGROUND:Aortopulmonary collaterals (APC) have been associated with an increased risk of choreoathetosis after deep hypothermic circulatory arrest (DHCA). To study the effects of APC on cerebral hemodynamics and metabolism before and after DHCA, a piglet model was developed. METHODS AND RESULTS:Protocol 1: Eight 4- ...

journal_title：Circulation

authors： Kirshbom PM,Skaryak LA,DiBernardo LR,Kern FH,Greeley WJ,Gaynor JW,Ungerleider RM

更新日期：1995-11-01 00:00:00

abstract：BACKGROUND:Because acute exercise increases systemic catecholamines, we sought to determine whether exercise training would alter daily or exercise-related catecholamine release and inactivation. METHODS AND RESULTS:In 24-hour urine collections, catecholamines and metabolites provided indexes of overall oxidative deam...

journal_title：Circulation

authors： Rogers PJ,Tyce GM,Weinshilboum RM,O'Connor DT,Bailey KR,Bove AA

更新日期：1991-12-01 00:00:00

abstract：BACKGROUND:There is no treatment proven to limit the growth of abdominal aortic aneurysms, in which the histological hallmarks include inflammation and medial atrophy, with apoptosis of smooth muscle cells and destruction of elastin. METHODS AND RESULTS:Aneurysm biopsies were used for explant cultures, the preparation...

journal_title：Circulation

authors： Walton LJ,Franklin IJ,Bayston T,Brown LC,Greenhalgh RM,Taylor GW,Powell JT

更新日期：1999-07-06 00:00:00

abstract：BACKGROUND:Genetic polymorphisms at codons 16 and 27 of the beta2-adrenergic receptor have been associated with altered response to sympathetic stimulation. We examined these polymorphisms in relation to cardiovascular event risk in the Cardiovascular Health Study. METHODS AND RESULTS:A total of 808 black and 4441 whi...

journal_title：Circulation

authors： Heckbert SR,Hindorff LA,Edwards KL,Psaty BM,Lumley T,Siscovick DS,Tang Z,Durda JP,Kronmal RA,Tracy RP

更新日期：2003-04-22 00:00:00

abstract：BACKGROUND:Although the left prepectoral site is preferred for "hot can" placement, this site is unavailable in some patients. We evaluated the influence of electrode location on defibrillation thresholds with alternative hot can and transvenous lead configurations. METHODS AND RESULTS:Three interrelated studies were ...

journal_title：Circulation

authors： Yamanouchi Y,Mowrey KA,Niebauer MJ,Tchou PJ,Wilkoff BL

更新日期：1997-12-16 00:00:00

abstract：BACKGROUND:Atherosclerosis is complicated by cardiovascular events such as myocardial infarction, stroke, or peripheral arterial occlusive disease. Inflammation and pathological neovascularization are thought to precipitate plaque rupture or erosion, both causes of arterial thrombosis and cardiovascular events. We test...

journal_title：Circulation

authors： Fleiner M,Kummer M,Mirlacher M,Sauter G,Cathomas G,Krapf R,Biedermann BC

更新日期：2004-11-02 00:00:00

abstract：BACKGROUND:It is recommended that comatose survivors of out-of-hospital cardiac arrest should be cooled to 32° to 34°C for 12 to 24 hours. However, the optimal level of cooling is unknown. The aim of this pilot study was to obtain initial data on the effect of different levels of hypothermia. We hypothesized that deepe...

journal_title：Circulation

authors： Lopez-de-Sa E,Rey JR,Armada E,Salinas P,Viana-Tejedor A,Espinosa-Garcia S,Martinez-Moreno M,Corral E,Lopez-Sendon J

更新日期：2012-12-11 00:00:00

abstract：BACKGROUND:Despite successful restoration of epicardial vessel patency with primary percutaneous coronary intervention, coronary microvascular injury occurs in a large proportion of patients with ST-segment-elevation myocardial infarction, adversely affecting clinical and functional outcome. Ticagrelor has been reporte...

journal_title：Circulation

authors： van Leeuwen MAH,van der Hoeven NW,Janssens GN,Everaars H,Nap A,Lemkes JS,de Waard GA,van de Ven PM,van Rossum AC,Ten Cate TJF,Piek JJ,von Birgelen C,Escaned J,Valgimigli M,Diletti R,Riksen NP,van Mieghem NM,Nijveldt R,

更新日期：2019-01-29 00:00:00

abstract：BACKGROUND:The morphological characteristics of coronary plaques in patients with stable versus unstable coronary syndromes have been described in vivo with intravascular ultrasound, but the relationship between arterial remodeling and clinical presentation is not well known. METHODS AND RESULTS:We studied 85 patients...

journal_title：Circulation

authors： Schoenhagen P,Ziada KM,Kapadia SR,Crowe TD,Nissen SE,Tuzcu EM

更新日期：2000-02-15 00:00:00

abstract：BACKGROUND:Hypercholesterolemia is a risk factor for coronary disease, and platelet reactivity is increased with hypercholesterolemia, suggesting a prethrombotic risk. The aim of this study was to measure mural platelet thrombus formation on an injured arterial wall in a model simulating vessel stenosis and plaque rupt...

journal_title：Circulation

authors： Lacoste L,Lam JY,Hung J,Letchacovski G,Solymoss CB,Waters D

更新日期：1995-12-01 00:00:00

abstract：:BACKGROUND. A pace mapping technique using body surface potential maps (BSPMs) was developed to guide the positioning of an ablation catheter at the ventricular insertion point of accessory pathways (AP) in patients with the Wolff-Parkinson-White syndrome (WPW). METHODS AND RESULTS. The study was performed on 30 WPW p...

journal_title：Circulation

authors： Dubuc M,Nadeau R,Tremblay G,Kus T,Molin F,Savard P

更新日期：1993-01-01 00:00:00

abstract：BACKGROUND:In the event of rupture of an abdominal aortic aneurysm (AAA), mortality is very high. AAA prevalence and incidence of ruptures have been reported to be decreasing. The treatment of AAA has also undergone a change in recent decades with a shift toward endovascular aneurysm repair (EVAR). Our aim was to evalu...

journal_title：Circulation

authors： Laine MT,Laukontaus SJ,Sund R,Aho PS,Kantonen I,Albäck A,Venermo M

更新日期：2017-10-31 00:00:00

abstract：:Patients undergoing carotid endarterectomy were pretreated with low-dose, oral beta carotene to determine whether the carotenoid content of plaque could be increased in vivo. Beta carotene-treated patients had a 50-fold increase in their plaque beta carotene level from 0.066 to 3.3 micrograms beta carotene/g plaque. M...

journal_title：Circulation

authors： Prince MR,LaMuraglia GM,MacNichol EF Jr

更新日期：1988-08-01 00:00:00

abstract：BACKGROUND:Recent transcatheter aortic valve replacement studies have raised concerns about adverse cerebrovascular events. The etiopathology of the embolized material is currently unknown. METHODS AND RESULTS:A total of 40 patients underwent transcatheter aortic valve replacement with the use of a dual filter-based e...

journal_title：Circulation

authors： Van Mieghem NM,Schipper ME,Ladich E,Faqiri E,van der Boon R,Randjgari A,Schultz C,Moelker A,van Geuns RJ,Otsuka F,Serruys PW,Virmani R,de Jaegere PP

更新日期：2013-06-04 00:00:00

abstract：:Direct examination of the aortic orifice at the level of the aortic valves (aortic valvular orifice area, AVOA) in the short-axis plane was performed with a 3 MHz two-dimensional pulsed Doppler echocardiographic apparatus. The AVOA was mapped with the Doppler gate to detect or rule out the presence of a regurgitant ao...

journal_title：Circulation

authors： Veyrat C,Lessana A,Abitbol G,Ameur A,Benaim R,Kalmanson D

更新日期：1983-11-01 00:00:00

abstract：:Cardiac allograft vasculopathy (CAV) remains a troublesome long-term complication of heart transplantation. It is manifested by a unique and unusually accelerated form of coronary disease affecting both intramural and epicardial coronary arteries and veins.CAV is characterized by vascular injury induced by a variety o...

journal_title：Circulation

authors： Weis M,von Scheidt W

更新日期：1997-09-16 00:00:00

abstract：BACKGROUND:A decreased cardiac compliance is a major feature of the cardiomyopathy of diabetes mellitus. Either an increase in the resistance afterload to the LV or an increase in collagen cross-linking induced by the formation of advanced glycosylation end products (AGEs) of collagen may be responsible for the stiff m...

journal_title：Circulation

authors： Norton GR,Candy G,Woodiwiss AJ

更新日期：1996-05-15 00:00:00

abstract：BACKGROUND:Aortic valve-preserving procedures have resulted in excellent outcomes in selected patients, particularly those with normal aortic valve leaflets and dilated aortic roots. However, several congenital heart lesions are associated with abnormal aortic valve leaflets. The long-term results of aortic valve repai...

journal_title：Circulation

authors： Rao V,Van Arsdell GS,David TE,Azakie A,Williams WG

更新日期：2000-11-07 00:00:00

abstract：BACKGROUND:The role of structural heart disease and sodium channel dysfunction in the induction of electrical instability in Brugada syndrome is still debated. METHODS AND RESULTS:We studied 18 consecutive patients (15 males, 3 females; mean age 42.0+/-12.4 years) with clinical phenotype of Brugada syndrome and normal...

journal_title：Circulation

authors： Frustaci A,Priori SG,Pieroni M,Chimenti C,Napolitano C,Rivolta I,Sanna T,Bellocci F,Russo MA

更新日期：2005-12-13 00:00:00

abstract：:It has been suggested that the rate of left ventricular (LV) relaxation is related to the inotropic state, end-systolic fiber length and peak LV pressure, but little information is available regarding the rate of LV relaxation in patients with coronary artery disease (CAD) and LV dysfunction. To assess the rate of LV ...

journal_title：Circulation

authors： Papapietro SE,Coghlan HC,Zissermann D,Russell RO Jr,Rackley CE,Rogers WJ

更新日期：1979-05-01 00:00:00

abstract：:Exit block from a parasystolic focus is recognized when automatic discharges fail to become manifest during the excitable phase of the ventricular cycle. In the present study, an apparently complete exit block and a persistently concealed ventricular parasystole (VP) resulted from an exit refractory period (ExRP) long...

journal_title：Circulation

authors： Nau GJ,Aldariz AE,Acunzo RS,Chiale PA,Elizari MV,Rosenbaum MB

更新日期：1981-07-01 00:00:00

abstract：:To assess the impact of operative reduction of left ventricular outflow obstruction in hypertrophic cardiomyopathy, measurements of great cardiac vein flow, oxygen and lactate content, left ventricular pressures, and cardiac index were measured at rest and during pacing stress in 20 consecutive patients (13, myotomy-m...

journal_title：Circulation

authors： Cannon RO 3rd,McIntosh CL,Schenke WH,Maron BJ,Bonow RO,Epstein SE

更新日期：1989-04-01 00:00:00

abstract：BACKGROUND:Conflicting results from recent observational studies have raised questions concerning the benefit of β-blockers for patients undergoing coronary artery bypass grafting (CABG). Furthermore, the efficacy of long-term β-blocker therapy in CABG patients after hospital discharge is uncertain. METHODS AND RESULT...

journal_title：Circulation

authors： Zhang H,Yuan X,Zhang H,Chen S,Zhao Y,Hua K,Rao C,Wang W,Sun H,Hu S,Zheng Z

更新日期：2015-06-23 00:00:00

abstract：BACKGROUND:Peripheral arterial disease (PAD) is associated with an impairment in exercise performance and muscle function that is not fully explained by the reduced leg blood flow during exercise. This study characterized the effects of PAD on muscle function, histology, and metabolism. METHODS AND RESULTS:Twenty-six ...

journal_title：Circulation

authors： Regensteiner JG,Wolfel EE,Brass EP,Carry MR,Ringel SP,Hargarten ME,Stamm ER,Hiatt WR

更新日期：1993-02-01 00:00:00

abstract：BACKGROUND:Acute coronary ischemia is usually initiated by rupture of atherosclerotic plaque, leading to intracoronary thrombosis and clinical sequelae. The proximate cause of plaque rupture is unknown. Accordingly, we investigated the potential role of the 92-kD gelatinase member of the matrix metalloproteinase family...

journal_title：Circulation

authors： Brown DL,Hibbs MS,Kearney M,Loushin C,Isner JM

更新日期：1995-04-15 00:00:00

abstract：BACKGROUND:PCTP (phosphatidylcholine transfer protein) regulates the intermembrane transfer of phosphatidylcholine. Higher platelet PCTP expression is associated with increased platelet responses on activation of protease-activated receptor 4 thrombin receptors noted in black subjects compared with white subjects. Litt...

journal_title：Circulation

authors： Mao G,Songdej N,Voora D,Goldfinger LE,Del Carpio-Cano FE,Myers RA,Rao AK

更新日期：2017-09-05 00:00:00

abstract：BACKGROUND:A key component of reperfusion of myocardial infarction is an immediate inflammatory response, which enhances tissue repair. Matrix turnover is crucial to tissue repair, and matrix metalloproteinases (MMPs) are key enzymes involved in matrix degradation. The hypothesis tested is that one inflammation-based e...

journal_title：Circulation

authors： Lindsey M,Wedin K,Brown MD,Keller C,Evans AJ,Smolen J,Burns AR,Rossen RD,Michael L,Entman M

更新日期：2001-05-01 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

authors： Chyu KY,Babbidge SM,Zhao X,Dandillaya R,Rietveld AG,Yano J,Dimayuga P,Cercek B,Shah PK

更新日期：2004-05-25 00:00:00

abstract：:The morphologic consequences of transluminal angioplasty of stenotic atherosclerotic coronary arteries are unknown. This study describes the production of aortoiliac atherosclerosis in rabbits and reports the morphologic changes after transluminal angioplasty of stenotic arterial lesions. Atherosclerotic lesions were ...

journal_title：Circulation

authors： Block PC,Baughman KL,Pasternak RC,Fallon JT

更新日期：1980-04-01 00:00:00

abstract：BACKGROUND:In the Myocardial Infarction, Triage, and Intervention (MITI) registry of acute myocardial infarction, 441 (12%) of 3750 patients had direct angioplasty as initial treatment. Approximately half (233) were performed in hospitals with no on-site surgery. METHODS AND RESULTS:Procedure success rates, use of eme...

journal_title：Circulation

authors： Weaver WD,Litwin PE,Martin JS

更新日期：1993-11-01 00:00:00