Abstract:
:Neutrophil activation and infiltration into the ischemic myocardium after reperfusion may limit the amount of salvageable myocardium (reperfusion injury). The effects of intravenous perfluorochemicals (Fluosol-DA) on infarct size, ventricular contractility, and neutrophil function were assessed in an occlusion-reperfusion canine model. Closed-chest dogs were subjected to 90 minutes of left anterior descending artery occlusion followed by 24 hours of reperfusion. Animals were randomized to receive either Fluosol-DA (FDA, n = 8) or Ringer's lactate (CONT, n = 10) intravenously over 30 minutes just before left anterior descending artery reperfusion. Neutrophil demargination and infiltration into the myocardium were assessed in vivo with In111. Neutrophil chemotaxis, superoxide radical production, and lysozyme degranulation were evaluated ex vivo at baseline, 1 hour after occlusion, and 1 hour after reperfusion. Perfluorochemicals significantly reduced infarct size expressed as percent of area at risk (FDA, 7 +/- 4%; CONT, 24 +/- 6%; p less than 0.01). This was associated with positive wall motion in the jeopardized zone of Fluosol-DA animals compared with dyskinesis in control animals (FDA, +4.4 +/- 2.1%; CONT, -1.1 +/- 1.5%; p less than 0.05). Electron microscopy showed reduced neutrophil and erythrocyte plugging of capillaries with relative preservation of endothelial cells in the Fluosol-DA animals. Myocardial blood flow was greater in the ischemic endocardium of Fluosol-DA animals 1 hour after reperfusion (FDA, 1.23 +/- 0.21; CONT, 0.62 +/- 0.08 ml/g/min; p less than 0.01). Neutrophil demargination and infiltration into the ischemic myocardium was reduced in the animals treated with Fluosol-DA. (FDA, 2.5 +/- 0.7 x 10(3); CONT, 14.1 +/- 2.7 x 10(3) neutrophils/g; p less than 0.01). Neutrophil chemotaxis and lysozyme release were also markedly suppressed in the Fluosol-DA groups ex vivo. These results show that intravenous Fluosol-DA significantly reduces reperfusion injury with greater salvage of myocardium and improved left ventricular function. The chief mechanism of action of Fluosol-DA appears to be the suppression of neutrophil function.
journal_name
Circulationjournal_title
Circulationauthors
Bajaj AK,Cobb MA,Virmani R,Gay JC,Light RT,Forman MBdoi
10.1161/01.cir.79.3.645subject
Has Abstractpub_date
1989-03-01 00:00:00pages
645-56issue
3eissn
0009-7322issn
1524-4539journal_volume
79pub_type
杂志文章相关文献
CIRCULATION文献大全abstract:BACKGROUND:The clinical significance of minor elevations in creatine kinase-myocardial band isoenzyme (CK-MB) after coronary interventions has not been systematically evaluated. METHODS AND RESULTS:We examined 4484 patients who underwent successful percutaneous transluminal coronary angioplasty or directional coronary...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.94.7.1528
更新日期:1996-10-01 00:00:00
abstract:BACKGROUND:There are few studies of cardiac autonomic nervous activity (CANA) in patients with congenital heart disease. Methods and Results-We evaluated CANA in 54 patients after closure of an atrial/ventricular septal defect (group A), 54 patients after successful right ventricular outflow tract reconstruction (RVOTR...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.102.22.2732
更新日期:2000-11-28 00:00:00
abstract:BACKGROUND:Left ventricular (LV) reconstruction surgery leads to early improvement in LV function in ischemic cardiomyopathy (ICM) patients. This study was designed to evaluate the impact of mitral valve (MV) repair associated with LV reconstruction on LV function 1-year after surgery in ICM patients assessed by real-t...
journal_title:Circulation
pub_type: 临床试验,杂志文章
doi:10.1161/01.cir.0000087653.99527.50
更新日期:2003-09-09 00:00:00
abstract:BACKGROUND:In the past few years, although significant efforts have been made to assess flow distribution during retrograde cerebral perfusion with microspheres, dye, or hydrogen clearance, flow distribution in real time is still undefined. We used MR perfusion imaging to monitor flow distribution in the brain during a...
journal_title:Circulation
pub_type: 杂志文章
doi:
更新日期:1998-11-10 00:00:00
abstract:BACKGROUND:Hutchinson-Gilford progeria syndrome is an ultrarare segmental premature aging disease resulting in early death from heart attack or stroke. There is no approved treatment, but starting in 2007, several recent single-arm clinical trials administered inhibitors of protein farnesylation aimed at reducing toxic...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/CIRCULATIONAHA.113.008285
更新日期:2014-07-01 00:00:00
abstract:BACKGROUND:The outcome of patients with corrected transposition of the great arteries (CTGA) is variably affected by associated intracardiac defects, tricuspid valve competence, and systemic right ventricular (RV) function. The relative importance of these factors in long-term outcome has not been evaluated. METHODS A...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.98.10.997
更新日期:1998-09-08 00:00:00
abstract:BACKGROUND:Expansion of an acute myocardial infarction predicts progressive left ventricular (LV) dilatation, functional deterioration, and early death. This study tests the hypothesis that restraining expansion of an acute infarction preserves LV geometry and resting function. METHODS AND RESULTS:In 23 sheep, snares ...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.99.1.135
更新日期:1999-01-05 00:00:00
abstract:BACKGROUND:From 1958 to 1969, 592 patients (mostly children) with pulmonary stenosis were admitted to the First Natural History Study of Congenital Heart Defects (NHS-1) after cardiac catheterization. Most with gradients < 50 mm Hg were managed medically; most with gradients > or = 80 mm Hg had pulmonary valvotomy. Amo...
journal_title:Circulation
pub_type: 杂志文章
doi:
更新日期:1993-02-01 00:00:00
abstract::Nine patients (eight males) are reported with one or more episodes of circulatory collapse in the absence of overt heart disease or other known causes of arrhythmias; sudden arrhythmic death occurred in one of these patients. Age at first episode ranged from 16 to 41 (mean, 28) years. In seven patients, ventricular fi...
journal_title:Circulation
pub_type: 杂志文章
doi:
更新日期:1992-01-01 00:00:00
abstract:BACKGROUND:Hypertrophic cardiomyopathy (HCM) is characterized by myocardial hypertrophy of unknown etiology. Missense mutations of the cardiac beta-myosin-heavy-chain (beta-MHC) gene that may be responsible for cardiac hypertrophy have been detected in patients with HCM. On the other hand, gross structural abnormalitie...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.91.12.2911
更新日期:1995-06-15 00:00:00
abstract:BACKGROUND:Operator-independent isotropic 3D MRI may greatly simplify the assessment of complex morphology in congenital heart disease. We sought to evaluate the reliability of this new approach. METHODS AND RESULTS:In 31 adolescent and adult patients (age, 6 to 42 years; median, 16 years) with congenital heart diseas...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.CIR.0000134282.35183.AD
更新日期:2004-07-13 00:00:00
abstract:BACKGROUND:Disturbed fibrinolytic function may influence the progression of coronary atherosclerosis and contribute to thrombotic cardiovascular (CV) events. METHODS AND RESULTS:In the Angina Prognosis Study in Stockholm (APSIS), patients with stable angina pectoris were studied prospectively during double-blind treat...
journal_title:Circulation
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1161/01.cir.95.10.2380
更新日期:1997-05-20 00:00:00
abstract:BACKGROUND:According to the American Heart Association, passive smoking is an important risk factor for coronary heart disease (CHD), but the mechanisms underlying this association are not fully understood. We studied the acute effect of passive smoking on the factors that influence the development of CHD: the antioxid...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.97.20.2012
更新日期:1998-05-26 00:00:00
abstract::One hundred eighteen consecutive patients undergoing valve replacement for aortic stenosis were analyzed to determine the incidence of and predisposing factors to postoperative atrial tachyarrhythmias. Univariate and multivariate analyses were performed on 70 clinical, hemodynamic, radiographic, electrocardiographic, ...
journal_title:Circulation
pub_type: 杂志文章
doi:
更新日期:1985-09-01 00:00:00
abstract::Few data are available regarding the effects of exercise training upon cardiac structure and performance in man. We evaluated the echograms of 24 normals before (PRE) and after (POST) 11 weeks of endurance exercise training. Conditioning consisted of a walk-jog-run protocol at 70% maximal heart rate for one hour four ...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.57.2.237
更新日期:1978-02-01 00:00:00
abstract::We assessed the reversibility of functional and morphological changes of arterialized vein segments by returning them to the venous circulation. Thirteen dogs underwent right carotid and femoral veno-arterial grafting. After 12 weeks, veno-arterial grafts were removed for contractility (norepinephrine [NE] and 5-hydro...
journal_title:Circulation
pub_type: 杂志文章
doi:
更新日期:1990-11-01 00:00:00
abstract::Coronary occlusion in the dog results in irreversible myocardial cell injury which develops first in subendocardial areas of severe ischemica and subsequently spreads into mid and subepicardial areas of moderate ischemia. The effect of propranolol on this progression of ischemic injury was evaluated. Three groups of d...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.56.5.794
更新日期:1977-11-01 00:00:00
abstract:BACKGROUND:Tumor necrosis factor alpha (TNF-alpha) increases in patients with severe congestive heart failure (CHF) and cachexia. Two naturally occurring modulators of TNF-alpha activity have been identified in human serum. These two soluble proteins are the extracellular domains of the TNF receptors (sTNF-RI and sTNF-...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.92.6.1479
更新日期:1995-09-15 00:00:00
abstract::Systolic time intervals, stroke volume, cardiac output and (dZ/dt)/RZ index were serially estimated in 51 normal healthy volunteers at sea level, for ten days after air induction to 3658 m altitude and on return to sea level. The subjects were divided into three groups and were administered a diuretic, beta methyldigo...
journal_title:Circulation
pub_type: 临床试验,杂志文章
doi:10.1161/01.cir.57.6.1180
更新日期:1978-06-01 00:00:00
abstract:BACKGROUND:Whether passively collected data can substitute for adjudicated outcomes to reproduce the magnitude and direction of treatment effect observed in cardiovascular clinical trials is not well known. METHODS:We linked adults ≥65 years of age in the HiR (US CoreValve Pivotal High Risk) and SURTAVI trials (Surgic...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/CIRCULATIONAHA.120.046159
更新日期:2020-07-21 00:00:00
abstract::The amplitude and distribution of epicardial ST-segment elevation (ST) were examined for an 8-hour period after coronary occlusion in eight baboons and five pigs. ST was determined from unipolar epicardial electrograms obtained from a high-resolution matrix of fixed electrodes overlying a transmural region of ischemia...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.60.4.930
更新日期:1979-10-01 00:00:00
abstract:BACKGROUND:Resting cardiac function does not necessarily affect exercise capacity. However, to determine whether it affects early dynamics of oxygen uptake (VO2) during exercise, we measured VO2 during a constant work rate and during incremental exercise testing in patients with a history of myocardial infarction. VO2 ...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.90.5.2324
更新日期:1994-11-01 00:00:00
abstract:BACKGROUND:Abnormalities of arterial pulse and limb growth after retrograde femoral arterial catheterization have been well documented. However, the magnitude of such complications after transfemoral artery balloon dilatation has not been thoroughly investigated. This study sought to evaluate the prevalence of these ab...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.95.4.974
更新日期:1997-02-18 00:00:00
abstract:BACKGROUND:Relieving the inhibition of sarcoplasmic reticular function by phospholamban is a major target of beta-adrenergic stimulation. Chronic beta-adrenergic receptor activity has been suggested to be detrimental, on the basis of transgenic overexpression of the receptor or its signaling effectors. However, it is n...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.103.6.889
更新日期:2001-02-13 00:00:00
abstract:BACKGROUND:Exercise stimulates the vascular response in pathological conditions, including ischemia; however, the molecular mechanisms by which exercise improves the impaired hypoxia-induced factor (HIF)-1 alpha-mediated response to hypoxia associated with aging are poorly understood. Here, we report that swimming trai...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/CIRCULATIONAHA.109.909218
更新日期:2010-08-17 00:00:00
abstract::Variations in the frequency of complex ventricular arrhythmias were evaluated by consecutive 24-hour long-term electrocardiographic recordings over 4 days using a two-channel recorder and computer-assisted analysis system with a weighted relative mean error of 7.5 +/ 5% (SD). Twenty patients (mean age 58 +/- 9 years ...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.61.4.690
更新日期:1980-04-01 00:00:00
abstract::Reactive oxygen species such as the superoxide anion (.O2-) have recently been implicated as important agents involved in causing cell death in the setting of myocardial ischemia and reperfusion. When superoxide anion is involved in ischemic injury the administration of superoxide dismutase (SOD) may limit infarct siz...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.75.6.1237
更新日期:1987-06-01 00:00:00
abstract:BACKGROUND:Precise knowledge of the expected "normal" lumen diameter at a given coronary anatomic location is a first step toward developing a quantitative estimate of coronary disease severity that could be more useful than the traditional "percent stenosis." METHODS AND RESULTS:Eighty-three arteriograms were careful...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.86.1.232
更新日期:1992-07-01 00:00:00
abstract:BACKGROUND:Less invasive methods are replacing traditional invasive means of measuring coronary flow reserve (CFR). Transesophageal echocardiography (TEE) is becoming a useful tool for evaluation of coronary artery disease and has recently been used to measure CFR. This has always been done using dipyridamole, but aden...
journal_title:Circulation
pub_type: 临床试验,杂志文章
doi:10.1161/01.cir.92.2.190
更新日期:1995-07-15 00:00:00
abstract:BACKGROUND:Chronic pulmonary regurgitation after repair of tetralogy of Fallot (TOF) may lead to right ventricular dilatation, which may be accompanied by ventricular tachycardia and sudden death. We aimed to examine the effects of pulmonary valve replacement (PVR) on (1) certain electrocardiographic markers predictive...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.103.20.2489
更新日期:2001-05-22 00:00:00