BACKGROUND AND OBJECTIVE: Obstructive sleep apnea (OSA) and heart failure (HF) are common coexisting diseases. Intermittent hypoxia (IH), caused by repeated apnea/hypopnea events, accompanied by increased systemic inflammation, might contribute to the …

Cytochrome P450 enzymes (P450s), along with their cardioprotective metabolites the epoxyeicosatrienoic acids (EETs) and cardiotoxic metabolite 20-hydroxyeicosatetraeonic acid (20-HETE), were found to be altered in cardiac hypertrophy; however, it is …

BACKGROUND: Bradycardic agents are of interest for the treatment of ischemic heart disease and heart failure, as heart rate (HR) is an important determinant of myocardial oxygen consumption.\n\nOBJECTIVES: To investigate the propensity of …

OBJECTIVES: Reduced cardiac β-adrenoceptor (β-AR) expression and cardiovascular dysfunction occur in models of hyperglycemia and hypoinsulinemia. Cardiac β-AR expression in type-2 diabetes models of hyperglycemia and hyperinsulinemia, remain less clear. …

Although direct myocardial depression has been implicated in the lethal effects of Bacillus anthracis lethal toxin (LT), in hearts isolated from healthy rats and perfused under constant pressure, neither LT or edema toxin (ET) in typically lethal …

a b s t r a c t Pathological cardiac hypertrophy, often accompanied by hypertension, aortic stenosis and valvular de-fects, is typically associated with myocyte remodeling and cardiac dysfunction. Exercise preconditioning (EP) has been proven to enhance …

OBJECTIVE: It has not yet been fully elucidated whether cardiac tissue levels of prorenin, renin and (P)RR are activated in hypertension with a high salt intake. We hypothesized that a high salt intake activates the cardiac tissue renin angiotensin system …

Background—Left ventricular (LV) motion and deformation is dependent on mechanical load and do therefore not reflect myocardial energy consumption directly. Regional myocardial work, however, constitutes a more complete assessment of myocardial function. …

Radiofrequency ablation (RFA) procedures are used to destroy abnormal electrical pathways in the heart that can cause cardiac arrhythmias. Current methods relying on fluoroscopy, echocardiography and electrical conduction mapping are unable to accurately …

An accurate method for detecting contrast agents using diagnostic ultrasound imaging systems is proposed. Contrast agents, such as microbubbles, passing through a blood vessel during ultrasound imaging are detected as blinking signals in the temporal …