Search Results - "Laurita, Kenneth R"
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Targeted Sarcoplasmic Reticulum Ca2+ ATPase 2a Gene Delivery to Restore Electrical Stability in the Failing Heart
Published in Circulation (New York, N.Y.) (23-10-2012)“…Recently, we reported that sarcoplasmic reticulum Ca(2+) ATPase 2a (SERCA2a), the pump responsible for reuptake of cytosolic calcium during diastole, plays a…”
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Polarization-sensitive optical coherence tomography monitoring of percutaneous radiofrequency ablation in left atrium of living swine
Published in Scientific reports (21-12-2021)“…Radiofrequency ablation (RFA) is commonly used to treat atrial fibrillation (AF). However, the outcome is often compromised due to the lack of direct real-time…”
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Ventricular arrhythmias in mouse models of diabetic kidney disease
Published in Scientific reports (18-10-2021)“…Chronic kidney disease (CKD) affects more than 20 million people in the US, and it is associated with a significantly increased risk of sudden cardiac death…”
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An infrared optical pacing system for screening cardiac electrophysiology in human cardiomyocytes
Published in PloS one (24-08-2017)“…Human cardiac myocytes derived from pluripotent stem cells (hCM) have invigorated interest in genetic disease mechanisms and cardiac safety testing; however,…”
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Oxygen-coupled redox regulation of the skeletal muscle ryanodine receptor-Ca2+ release channel by NADPH oxidase 4
Published in Proceedings of the National Academy of Sciences - PNAS (20-09-2011)“…Physiological sensing of O2 tension (partial O2 pressure, pO2) plays an important role in some mammalian cellular systems, but striated muscle generally is not…”
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Cellular mechanisms of arrhythmogenic cardiac alternans
Published in Progress in biophysics and molecular biology (01-06-2008)“…Despite the strong association between mechanical dysfunction of the heart and sudden death due to arrhythmias, the causal relationship is not well understood…”
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Redox modification of ryanodine receptors underlies calcium alternans in a canine model of sudden cardiac death
Published in Cardiovascular research (01-12-2009)“…Aims Although cardiac alternans is a known predictor of lethal arrhythmias, its underlying causes remain largely undefined in disease settings. The potential…”
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KChIP2 regulates the cardiac Ca2+ transient and myocyte contractility by targeting ryanodine receptor activity
Published in PloS one (06-04-2017)“…Pathologic electrical remodeling and attenuated cardiac contractility are featured characteristics of heart failure. Coinciding with these remodeling events is…”
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Arrhythmogenic Delayed Afterdepolarizations Are Promoted by Severe Hypothermia But Not Therapeutic Hypothermia
Published in Circulation Journal (01-01-2018)“…Background:Severe hypothermia (SH) is known to be arrhythmogenic, but the effect of therapeutic hypothermia (TH) on arrhythmias is unclear. It is hypothesized…”
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Targeted SERCA2a Gene Expression Identifies Molecular Mechanism and Therapeutic Target for Arrhythmogenic Cardiac Alternans
Published in Circulation. Arrhythmia and electrophysiology (01-12-2009)“…BACKGROUND—Beat-to-beat alternans of cellular repolarization is closely linked to ventricular arrhythmias in humans. We hypothesized that sarcoplasmic…”
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S-phase Synchronization Facilitates the Early Progression of Induced-Cardiomyocyte Reprogramming through Enhanced Cell-Cycle Exit
Published in International journal of molecular sciences (04-05-2018)“…Direct reprogramming of fibroblasts into induced cardiomyocytes (iCMs) holds a great promise for regenerative medicine and has been studied in several major…”
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Cellular Mechanism of Calcium-Mediated Triggered Activity in the Heart
Published in Circulation Research (18-03-2005)“…Calcium overload due to enhanced calcium entry is a mechanism for spontaneous calcium release (SCR) from the sarcoplasmic reticulum,…”
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Role of Calcium Cycling Versus Restitution in the Mechanism of Repolarization Alternans
Published in Circulation research (30-04-2004)“…ABSTRACT—T-wave alternans, a powerful marker of arrhythmic events, results from alternation in action potential duration (APD). The underlying cellular…”
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KChIP2 is a core transcriptional regulator of cardiac excitability
Published in eLife (06-03-2017)“…Arrhythmogenesis from aberrant electrical remodeling is a primary cause of death among patients with heart disease. Amongst a multitude of remodeling events,…”
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Atrial SERCA2a Overexpression Has No Affect on Cardiac Alternans but Promotes Arrhythmogenic SR Ca2+ Triggers
Published in PloS one (09-09-2015)“…Atrial fibrillation (AF) is the most common arrhythmia in humans, yet; treatment has remained sub-optimal due to poor understanding of the underlying…”
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Aberrant S-nitrosylation mediates calcium-triggered ventricular arrhythmia in the intact heart
Published in Proceedings of the National Academy of Sciences - PNAS (30-10-2012)“…Nitric oxide (NO) derived from the activity of neuronal nitric oxide synthase (NOS1) is involved in S-nitrosylation of key sarcoplasmic reticulum (SR) Ca ²⁺…”
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Effect of Amiodarone and Hypothermia on Arrhythmia Substrates During Resuscitation
Published in Journal of the American Heart Association (18-05-2021)“…Background Amiodarone is administered during resuscitation, but its antiarrhythmic effects during targeted temperature management are unknown. The purpose of…”
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Heart failure enhances susceptibility to arrhythmogenic cardiac alternans
Published in Heart rhythm (01-02-2009)“…Background Although heart failure (HF) is closely associated with susceptibility to sudden cardiac death (SCD), the mechanisms linking contractile dysfunction…”
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A Singular Role of IK1 Promoting the Development of Cardiac Automaticity during Cardiomyocyte Differentiation by IK1–Induced Activation of Pacemaker Current
Published in Stem cell reviews (01-10-2017)“…The inward rectifier potassium current (I K1 ) is generally thought to suppress cardiac automaticity by hyperpolarizing membrane potential (MP). We recently…”
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