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- W2466392258 abstract "Background: Cardiomyocytes have small potential for renovation and proliferation in vivo. Consequently, the heart muscle has limited capacity of self-renewal. Mesenchymal stem cells (MSC) therapy, as well as MSC differentiated into cardiomyocytes, has been used in the attempt to minimize the effects of ischemic-hypoxic lesions and those affecting the electrical conduction system of the heart. Objective: The present study compared three distinct protocols for induced differentiation of MSC into cardiomyocytes aimed at finding a viable method for producing a large number of functional cells expressing cardiomyogenic phenotype. Methods: Mesenchymal stem cells were obtained from the adipose tissue of young transgenic Lewis rats expressing green fluorescent protein (GFP), and submitted to three distinct differentiation-inducing media: 1) Planat-Bernard, 2) 5-azacytidine, and 3) Planat-Bernard + 5-azacytidine; further, these cells were identified based on the expression of cardiac cell markers. Results: All three protocols detected the expression of sarcomeric-alpha-actinin protein in the exoskeleton of cells, expression of connexin-43 in the nuclear and cytoplasmic membrane, and formation of gap junctions, which are necessary for electrical impulse propagation in the myocardium. However, no spontaneous cell contraction was observed with any of the tested protocols. Conclusion: Induction with 5-azacytidine provided an effective cadiomyogenic cellular differentiation similar to that obtained with Planat-Benard media. Therefore, 5-azacytidine was the method of choice for being the simplest, fastest and lowest-cost protocol for cell differentiation. (Arq Bras Cardiol. 2013;100(1):82-89)" @default.
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- W2466392258 date "2013-01-01" @default.
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- W2466392258 title "Diferenciação de células-tronco mesenquimais derivadas do tecido adiposo em cardiomiócitos Differentiation of adipose tissue-derived mesenchymal stem cells into cardiomyocytes" @default.
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