منابع مشابه
M cells in the human heart.
Dispersion of repolarization across the ventricular wall has been suggested to underlie the inscription of the normal electrocardiographic T wave and when amplified to contribute prominently to the development of cardiac arrhythmias.1–3 The magnitude of transmural dispersion of repolarization (TDR) is attributable to intrinsic differences in the action potential duration (APD) of the 3 principa...
متن کاملIntercellular coupling through gap junctions masks M cells in the human heart.
OBJECTIVES M cells have been described in many mammalian species. They are thought to be relevant for the genesis of long QT intervals, afterdepolarizations and for dispersion in action potential duration and in repolarization time. Their role in the human heart is subject to debate. METHODS We simulated action potential propagation in a strand of transversally oriented myocytes running from ...
متن کاملComparison of the effects of intramyocardial and intravenous injections of human mesenchymal stem cells on cardiac regeneration after heart failure
Objective(s): Existing studies have demonstrated that intravenous and intramyocardial-administrated mesenchymal stem cells (MSCs) lead to tissue repair after cardiac disorders. We compared the efficiency of both administration methods.Materials and Methods: A rat model of isoproterenol-induced heart failure (ISO-HF) was established to co...
متن کاملFunctional and Developmental Analysis of CD4+CD25+ Regulatory T Cells under the Influence of Streptococcal M Protein in Rheumatic Heart Disease
The purpose of this study was to determine the role of streptococcal M protein in naturally-occurring CD4+CD25+ regulatory T cells (nTregs) function and development in rheumatic heart disease in Iraqi patients. Streptococcus pyogenes was isolated for subsequent M protein extraction. Also, peripheral blood nTregs and CD4+ T cells were isolated by using Magnetic Cell Separation System. Tissue cul...
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The adaptive response (AR) is a phenomenon by which cells exposure to sublethal doses of DNA-damaging agents (non-mutagenic dose of chemical or radiation), known as conditioning treatment (CT), leads to increased resistance to a subsequent exposure to a higher dose of the same or other agents, known as challenge treatment (CR). The adaptive response (AR) induced by radiation in human lymphocyte...
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ژورنال
عنوان ژورنال: Circulation Research
سال: 2010
ISSN: 0009-7330,1524-4571
DOI: 10.1161/circresaha.109.216226