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Journal ArticleDOI

Intracoronary delivery of mesenchymal stem cells reduces proarrhythmogenic risks in swine with myocardial infarction

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TLDR
This study provides strong evidence that MSC infusion via intracoronary route does not cause VAs but tends to reduce the risk of malignant VAs.
Abstract
The electrophysiological consequences of mesenchymal stem cell (MSC) therapy in ischemic heart disease have not been fully understood. Swine myocardial infarction (MI) model by intracoronary balloon occlusion received MSC solution or 0.9% NaCl. Six weeks later, heart rate turbulence (HRT), dispersion of action potential durations (APD) and repolarization time (RT) (APDd and RTd), slope of APD reconstitution curve and programmed electrical stimulation were used to evaluate the ventricular arrhythmic risks. MSC treatment could significantly ameliorate the abnormal HRT, APD90, APDd, RT and RTd. The slope of APD reconstitution curve in MSC group was higher than control group but lower than MI group. MSC therapy markedly reduced inducible malignant ventricular arrhythmias (VAs), and improved impaired cardiac performances and cardiac fibrosis. This study provides strong evidence that MSC infusion via intracoronary route does not cause VAs but tends to reduce the risk of malignant VAs.

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Journal ArticleDOI

Mesenchymal stem cells in cardiac regeneration: a detailed progress report of the last 6 years (2010-2015).

TL;DR: This in-depth review is an attempt to summarize the major sources of mesenchymal stem cells involved in myocardial regeneration, the significant mechanisms involved in the process with a focus on studies conducted in the last 6 years and the challenges that remain to be addressed.
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Similar Effect of Autologous and Allogeneic Cell Therapy for Ischemic Heart Disease: Systematic Review and Meta-Analysis of Large Animal Studies

TL;DR: In this article, a meta-analysis of preclinical data of cell therapy for ischemic heart disease was performed, which showed a significant improvement in mean left ventricular ejection fraction in treated compared with control animals.
Journal ArticleDOI

Mesenchymal stem cells for cardiovascular regeneration.

TL;DR: In vivo and in vitro evidence suggests that MSCs can also differentiate into cardiomyogenic and vasculogenic lineages, offering another cell source for cardiovascular regeneration, as well as their limitations that may prevent them from being effectively used in the clinic.
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Anti-fibrotic mechanisms of exogenously-expanded mesenchymal stromal cells for fibrotic diseases.

TL;DR: An overview of known mechanisms by which MSCs mediate their anti-fibrotic actions and in relation to animal models of pulmonary, liver, renal and cardiac fibrosis is provided.
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Quantitative Assessment of Sialo-Glycoproteins and N-Glycans during Cardiomyogenic Differentiation of Human Induced Pluripotent Stem Cells.

TL;DR: Analysis of the N‐glycome by capillary gel electrophoresis revealed three novel structures comprising β1,3‐linked galactose, α2,6‐linked sialic acid and complex fucosylation, which are proposed to be characteristic of early, immature CMs.
References
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Journal ArticleDOI

Transendocardial, Autologous Bone Marrow Cell Transplantation for Severe, Chronic Ischemic Heart Failure

TL;DR: The present study demonstrates the relative safety of intramyocardial injections of bone marrow–derived stem cells in humans with severe heart failure and the potential for improving myocardial blood flow with associated enhancement of regional and global left ventricular function.
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Autologous skeletal myoblast transplantation for severe postinfarction left ventricular dysfunction

TL;DR: These preliminary data suggest the feasibility and safety of autologous skeletal myoblast transplantation in severe ischemic cardiomyopathy, with the caveat of an arrhythmogenic potential, and new-onset contraction of akinetic and nonviable segments suggests a functional efficacy that requires confirmation by randomized studies.
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Slow conduction in the infarcted human heart. 'Zigzag' course of activation.

TL;DR: Slow conduction perpendicular to the fiber direction in infarcted myocardial tissue is caused by a "zigzag" course of activation at high speed.