Search Results
Results 401 - 450 of 1902
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Sahin Durmuş Yıldıray - - 2013
Patients with ST-segment elevation myocardial infarction (STEMI) and a patent infarct-related artery (IRA) experience lower mortality and better clinical outcome, but little is known about the predictors of IRA patency before primary percutaneous coronary intervention (PCI) in the setting of STEMI. To assess possible predictors of patency of IRA before ...
Liu Zhong-Zhi - - 2013
To investigate the effect of ischemic postconditioning on the expression of matrix metalloproteinase (MMP)-2 during ischemia-reperfusion of myocardium in a rabbit model. Thirty-six male New Zealand white rabbits were randomly divided into sham, ischemia-reperfusion and ischemic postconditioning groups. Myocardial ischemia-reperfusion was created by ligating the left anterior descending coronary artery ...
Zhao Qifeng - - 2013
This study aims to investigate the pre- and postconditioning effects of lipoxin A4 (LXA4) on myocardial damage caused by ischemia/reperfusion (I/R) injury. Seventy-two rats were divided into 6 groups: sham groups (C1 and C2), I/R groups (I/R1 and I/R2), and I/R plus LXA4 preconditioning and postconditioning groups (LX1 and LX2). ...
Wu Aiming - - 2013
Aim. To determine the effect of a Chinese herbal compound named Wenxin Granule on ventricular remodeling and myocardial apoptosis in rats with myocardial infarction (MI). Methods. Male Sprague-Dawley (SD) rats were randomly divided into four groups: the control group, the model group, the metoprolol group, and the Wenxin Granule group ...
Tsai Wei-Chung - - 2013
Background: The association between increased arterial stiffness and left ventricular diastolic dysfunction (LVDD) may be influenced by left ventricular performance. P wave dispersion is not only a significant determinant of left ventricular performance, but is also correlated with LVDD. This study is designed to compare left ventricular diastolic function among ...
Cokic Ivan - - 2013
Iron deposition has been shown to occur following myocardial infarction (MI). We investigated whether such focal iron deposition within chronic MI lead to electrical anomalies. Two groups of dogs (ex-vivo (n = 12) and in-vivo (n = 10)) were studied at 16 weeks post MI. Hearts of animals from ex-vivo group were explanted and ...
Minicucci Marcos F - - 2013
Our objective was to analyze the effect of spironolactone on cardiac remodeling after experimental myocardial infarction (MI), assessed by matricellular proteins levels, cardiac collagen amount and distribution, myocardial tissue metalloproteinase inhibitor-1(TIMP-1) concentration, myocyte hypertrophy, left ventricular architecture, and in vitro and in vivo cardiac function. Wistar rats were assigned to ...
Liu Z Y - - 2013
The relationship between serum neopterin levels and coronary heart disease (CHD) was investigated. Eighty-six CHD patients were divided into an acute myocardial infarction (AMI) group (N = 21), an unstable angina pectoris (UAP) group (N = 35), and a stable angina pectoris (SAP) group (N = 30), based on coronary ...
Al-Motarreb Ahmed - - 2013
Background. Khat chewing is a common habit in Yemen despite increased evidence of its negative impact on the cardiovascular system. Aims. We aimed to study the epicardial coronary arteries in khat chewers presenting with myocardial infarction (AMI). Materials and Methods. A descriptive, cross-sectional study was conducted between November 2008 and ...
Tong Jiayi - - 2013
This study evaluated the effects of ultrasound combined with the homemade nitric oxide (NO) micro-bubble destruction on the in vitro proliferation, apoptosis, and migration of mesenchymal stem cells (MSCs). Furthermore, we studied whether or not irradiation of the NO micro-bubble combined with bone-marrow derived MSC infusion had a better effect ...
Xu Shasha - - 2013
Purpose: Leukotriene B4 (LTB4) and extracellular matrix metalloproteinase (EMMPRIN) have been suggested as modulators of atherosclerotic plaque instability. This study sought to evaluate the potential diagnostic implication of LTB4 and EMMPRIN in patients with acute coronary syndrome (ACS). Methods: Patients (n=153) who underwent coronary angiography, including 105 patients diagnosed with ...
Raieszadeh Hamid - - 2013
270 Ross broiler chickens of twenty days old were housed in 18-floor pens in a completely randomized design with six treatment groups and three replicate groups and fifteen chicks per each pen. The treatment groups (1-6) consisted of 0, 10, 20, 30, 50, and 70 ppm of nanocide in drinking water, ...
Hidaka Takayuki - - 2013
Primary aldosteronism (PA) is a most common cause of secondary hypertension. In PA, left ventricular hypertrophy (LVH) is more progressive than in any other cause of hypertension. Aldosterone-producing adenoma (APA) and idiopathic hyperaldosteronism (IHA) are major subtypes of PA. However there is little information concerned with differences of cardiac structures ...
Liang Min-Jie - - 2013
To identify changes in brain activation patterns in bipolar disorder (BD) and unipolar depression (UD) patients. Resting-state fMRI scans of 16 healthy controls, 17 BD and 16 UD patients were obtained. T-test of normalized regional homogeneity (ReHo) was performed in a voxel-by-voxel manner. A combined threshold of á = 0.05, minimum cluster ...
Lee Chi-Hang CH Department of Cardiology, National University Heart Centre, Singapore ; Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, - - 2013
We assessed whether excessive daytime sleepiness was associated with coronary plaque phenotype and subsequent adverse cardiovascular events. Prospective cohort study. Intravascular ultrasound (IVUS) examination of the culprit coronary stenosis was performed. The Epworth Sleepiness Scale (ESS) questionnaire was administered, and the patients were divided into 2 groups-(1) sleepier and (2) ...
Foster Cerrone R CR Department of Biomedical Sciences, James H Quillen College of Medicine, James H Quillen Veterans Affairs Medical Center, East Tennessee State University, Johnson City, Tennessee, United States of - - 2013
Ataxia telangiectasia mutated kinase (ATM) is a cell cycle checkpoint protein activated in response to DNA damage. We recently reported that ATM plays a protective role in myocardial remodeling following β-adrenergic receptor stimulation. Here we investigated the role of ATM in cardiac remodeling using myocardial infarction (MI) as a model. ...
Cai Anping A Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Road 2, Guangzhou 510080, - - 2013
Background and Aim. Incidence of coronary restenosis after stent placement is high. Our study was going to investigate whether Lp(a) elevation was potential for predicting coronary restenosis and whether the effects of Lp(a) elevation on coronary restenosis were dependent on LDL-C level. Methods and Results. Totally 832 participants eligible for ...
Wang Xinguo X Department of Cardiology, Beijing Anzhen Hospital affiliated to Capital Medical University, Beijing, - - 2013
Periprocedural myocardial infarction (PMI) may occur in approximately 5% to 30% of patients undergoing percutaneous coronary intervention. Whether the morphology of coronary plaque calcium affects the occurrence of PMI is unknown. A total of 616 subjects with stable angina and normal baseline cardiac troponin I levels who had undergone computed ...
Wang Yakun Y Department of Nephrology, Tongji Hospital of Tongji University Shanghai, - - 2013
This study aimed to investigate the relationship between microalbuminuria (MAU) and cardiovascular events. A total of 1259 hospitalized patients who received urinary albumin detection were recruited from Tongji Hospital of Tongji University in 2012. They were divided into two groups according to the level of urinary albumin: normal albuminuria (NAU) ...
Li Min M Department of Medical Imaging, Jinan Military General Hospital, Jinan, Shandong Province, - - 2013
As Doppler ultrasound has been proven to be an effective tool to predict and compress the optimal pulsing windows, we evaluated the effective dose and diagnostic accuracy of coronary CT angiography (CTA) incorporating Doppler-guided prospective electrocardiograph (ECG) gating, which presets pulsing windows according to Doppler analysis, in patients with a ...
Resic Nerma N Clinic for Heart disease and rheumatism, Clinical Center University of Sarajevo, Sarajevo, Bosnia and Herzegovina. - - 2013
Usage of fibrinolytic therapy leads to reperfusion of the occluded coronary arteries, rescue of ventricle myocardium and successful recovery of patient. The objective of this study was to compare the reperfusion effect of streptokinase and alteplase in acute myocardial infarction (AMI) by analyzing echocardiographic parameters and post-coronarography treatment. We observed ...
Cagliyan Caglar E - - 2012
BACKGROUND: We aimed to examine the association between plasminogen activator inhibitor-1 (PAI-1) genetic polymorphism and early spontaneous recanalization in patients presenting with acute ST-elevation myocardial infarction. METHODS: Patients admitted to our emergency department with ST-elevation myocardial infarction in the first 6 h of symptom onset were included. An immediate primary ...
Tsaroucha Athanasia - - 2012
ABSTRACT Objective: The objective of this experimental study was to investigate a possible myocardial involvement in acute liver failure. Materials and Methods: A porcine model of acute liver failure induced by hepatic devascularization was used. Twenty animals were allocated to the Acute Liver Failure (ALF) or Control Group (CG). Serum ...
Loh Joshua P - - 2012
Patients with acute coronary syndrome undergoing percutaneous coronary intervention (PCI) commonly receive a loading dose of either clopidogrel or prasugrel, in addition to aspirin. The present study aimed to assess the safety of reloading prasugrel in patients who had initially received a loading dose of clopidogrel compared to prasugrel loading ...
Iliodromitis Konstantinos - - 2012
BACKGROUND: Preconditioning (PreC) and postconditioning (PostC) reduce infarct size. We sought to determine the effects of PreC and PostC, alone or in combination, on infarct size and expression of intracellular signals in different ischemia models. METHODS: Male rabbits were subjected to myocardial ischemia followed by 3-hour reperfusion. In a first ...
Nishizaki Fumie - - 2012
This study evaluates the clinical significance of re-elevation of T-wave in patients with ST segment elevation acute myocardial infarction (STEMI) undergoing successful percutaneous coronary intervention (PCI). Resolution of ST elevation within 24 h after reperfusion is associated with better outcome. However, little is known about the serial electrocardiography (ECG) changes ...
Lei Juan - - 2012
Expression of the proteoglycan syndecan-1 (Sdc1) is increased in rats with myocardial infarction (MI). This study investigated the effects of Sdc1 overexpression on ventricular remodeling and cardiac function in MI and explored the possible mechanism through in vivo transfection of rats with recombinant adenovirus-carrying rat Sdc1 cDNA. Sprague-Dawley rats (n = 48) ...
Li Qian - - 2012
BACKGROUND: The noble gas anaesthetic, xenon has previously been shown to protect the adult myocardium from ischaemia/reperfusion (I/R) injury, however its effect on immature myocardium is unclear. The aim of this study was to investigate the effect of xenon on the isolated immature heart. METHODS: Isolated, immature (2-3weeks old) New ...
Rosengart Todd K TK Division of Cardiothoracic Surgery, Department of Surgery, Stony Brook University Medical Center, Stony Brook, NY 11794, - - 2013
On the basis of studies in experimental animals demonstrating that AdVEGF121, an E1(-)E3(-) serotype 5 adenovirus coding the 121 isoform of vascular endothelial growth factor (VEGF), could mediate the generation of new blood vessels and reverse coronary ischemia, a clinical study of direct myocardial administration of AdVEGF121 was initiated in ...
Peng Ding-Feng - - 2013
This study aimed to investigate the pathophysiological changes in a rat chronic heart failure complicated with renal failure model, caused by three-quarters nephrectomy and subcutaneous injection of isoproterenol (ISO). Sprague-Dawley (SD) rats in the model group received three-quarters nephrectomy after twice undergoing surgical resections and subcutaneous injection of ISO (100 ...
De Schutter Alban - - 2012
Although obesity is a coronary heart disease risk factor, in cohorts of patients with coronary heart disease, an "obesity paradox" exists whereby patients with obesity have a better prognosis than do leaner patients. Obesity is generally defined by body mass index, with relatively little described regarding body fat (BF). In ...
Delacrétaz Etienne - - 2012
BACKGROUND: In the Ventricular Tachycardia Ablation in Coronary Heart Disease (VTACH) study, an intention-to-treat approach was used and may have diminished the observed degree of treatment effect. We present a subanalysis of the VTACH study by treatment actually received. METHODS AND RESULTS: The VTACH study was a prospective, open, randomized ...
Bartholomä Mark D MD Division of Nuclear Medicine and Molecular Imaging, Boston Children's Hospital, Boston, Massachusetts 02115, - - 2012
We recently reported the development of the 2-[(18)F]fluoroethyl ester of rhodamine B as a potential positron emission tomography (PET) tracer for myocardial perfusion imaging. This compound, which was prepared using a [(18)F]fluoroethyl prosthetic group, has significant uptake in the myocardium in rats but also demonstrates relatively high liver uptake and ...
Hashizume Ryotaro - - 2012
OBJECTIVE: Myocardial infarction (MI) can lead to irreversible adverse left ventricular remodeling resulting in subsequent severe dysfunction. The objective of this study was to investigate the potential for biodegradable, elastomeric patch implantation to positively alter the remodeling process after MI in a porcine model. METHODS: Yorkshire pigs underwent a 60-minute ...
Fu Jian-Hua - - 2012
OBJECTIVE: To investigate the effects and mechanisms of hawthorn leaves flavonoids (HLF) on acute myocardial ischemia/reperfusion in anesthetized dogs. METHODS: The acute ischemia models were prepared by ligating left anterior descending (LAD) artery for 60 min. Qualified 15 male dogs were randomly divided into 3 groups with 5 in each ...
Berg Kirsti - - 2012
OBJECTIVES: Acetylsalicylic acid (ASA) is a cornerstone in the treatment of coronary artery disease (CAD) due to its antiplatelet effect. Cessation of aspirin before coronary artery bypass grafting (CABG) is often recommended to avoid bleeding, but the practice is controversial because it is suggested to worsen the underlying CAD. The ...
De Carlo Marco - - 2012
The aim of this study was to evaluate whether thrombectomy during primary percutaneous coronary intervention (pPCI) in patients with high thrombus burden improves myocardial reperfusion and reduces infarct size. Thrombectomy aims at reducing distal thrombotic embolization during pPCI, improving myocardial reperfusion and clinical outcome. We randomized 208 patients with high ...
Dominguez-Rodriguez Alberto - - 2012
Cardiopulmonary exercise testing (CPET) is used in cardiology to grade the severity of heart failure and to assess its prognosis. However, it is unknown whether CPET may be a useful technique to rule out coronary artery disease (CAD) in patients with anginal chest pain and left bundle branch block (LBBB). ...
Gu Wei - - 2012
BACKGROUND: This study investigated whether an imbalance in Th1/Th2 cells is involved in the post-resuscitation myocardial immune dysfunction. METHODS: 26 Wuzhishan miniature pigs were randomly divided into return of spontaneous circulation (ROSC) group (n=20) and sham-operated group (n=6), 20 pigs were subjected to 8min of electrically-induced cardiac arrest, After successful ...
Nemes A - - 2012
A recently developed computerized method for estimation of myocardial perfusion, based on the analysis of the time-density curves, is demonstrated to assess myocardial blush over a selected myocardial region of interest in a patient with obstructive hypertrophic cardiomyopathy before and after alcohol septal ablation.
Piccirillo Gianfranco - - 2013
The QT variability index, calculated between Q- and the T-wave end (QTend VI), is an index of temporal myocardial repolarization lability associated with sudden cardiac death (SCD) in chronic heart failure (CHF). Little is known about temporal variability in the other two temporal myocardial repolarization descriptors obtained from Q-Tpeak and ...
Lilli Alessio - - 2012
Background: Left ventricular (LV) twist represents a main aspect of ejection. It is defined as the difference between the apical and basal rotation and can be assessed by speckle tracking echocardiography (STE). Twist may be underestimated when assessed by two-dimensional-echocardiography due to the difficulty of identifying the real apex. Aim ...
Tian Li - - 2012
OBJECTIVE: Several studies to date have examined whether admission levels of hemoglobin A1c (HbA1c) correlate with short-term and long-term outcomes in patients with acute myocardial infarction treated with primary percutaneous coronary intervention (PCI). However, the results have been ambiguous. We speculated that admission levels of HbA1c correlate with short-term outcomes ...
Qiao Shigang - - 2012
PURPOSE: Delayed volatile anesthetic preconditioning (APC) can protect against myocardial ischemia/reperfusion (I/R) injury; the delayed phase is called the second window of protection (SWOP), but the underlying mechanism is unclear. Nuclear factor-κB (NF-κB) is involved in the myocardial protection conferred by APC in the acute phase; autophagy has been reported ...
Assumpção Antonio Carlos - - 2012
AIMS: Although an increase in the ventricular pacing threshold (VPT) has been observed after administration of transthoracic shock for ventricular defibrillation, few studies have evaluated the phenomenon with respect to the defibrillation waveform energy. Therefore, this study examined the VPT behaviour after transthoracic shock with a monophasic or biphasic energy ...
Yamashita Kennosuke - - 2012
To investigate the efficacy and safety of a second-generation drug-eluting stent (DES) for in-stent restenosis (ISR) after first-generation DES implantation. The everolimus-eluting stent is a second-generation DES that is very effective for de novo coronary lesions. The subjects were 145 consecutive patients who underwent re-stenting, including 93 given a first-generation ...
Acar Z - - 2012
<strong> </strong> In ST elevation myocardial infarction (STEMI) patients, mean platelet volume (MPV) is associated with infarct related artery patency both before and after reperfusion. In anterior STEMI patients successfully treated with primary percutaneous coronary intervention (PCI), the relationship between left ventricular (LV) function and MPV on admission is unknown. ...
Song Young Bin - - 2012
The authors sought to compare conservative and aggressive strategies for provisional side branch (SB) intervention in coronary bifurcation lesions. The optimal provisional approach for coronary bifurcation lesions has not been established. In this prospective randomized trial, 258 patients with a coronary bifurcation lesion treated with drug-eluting stents were randomized to ...
Boos Christopher J - - 2012
The European Society of Cardiology (ESC) recently published its updated recommendations for electrocardiogram (ECG) interpretation in athletes. It distinguishes ECG changes related to physical training (group 1 abnormalities) from training-unrelated changes (group 2) which may represent underlying electrical and structural heart disorders implicated in exercise related sudden cardiac death. This ...
Parsaee Mozhgan - - 2012
Diabetes mellitus is capable of impairing the myocardial function. Several studies have documented the influential impact of diabetes mellitus on the left ventricular function. The right ventricular function plays a significant role in the overall myocardial contractility; hence, this study was undertaken to evaluate the effect of diabetes mellitus type ...
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