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Stem cell derived cardiomyoctes

Jacqueline S Wendel, Lei Ye, Ran Tao, Jianyi Zhang, Jianhua Zhang, Timothy J Kamp, Robert T Tranquillo
UNLABELLED: A tissue-engineered cardiac patch provides a method to deliver cardiomyoctes to the injured myocardium with high cell retention and large, controlled infarct coverage, enhancing the ability of cells to limit remodeling after infarction. The patch environment can also yield increased survival. In the present study, we sought to assess the efficacy of a cardiac patch made from human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) to engraft and limit left ventricular (LV) remodeling acutely after infarction...
November 2015: Stem Cells Translational Medicine
Maaike Hoekstra, Christine L Mummery, Arthur A M Wilde, Connie R Bezzina, Arie O Verkerk
Cardiac arrhythmias are a major cause of morbidity and mortality. In younger patients, the majority of sudden cardiac deaths have an underlying Mendelian genetic cause. Over the last 15 years, enormous progress has been made in identifying the distinct clinical phenotypes and in studying the basic cellular and genetic mechanisms associated with the primary Mendelian (monogenic) arrhythmia syndromes. Investigation of the electrophysiological consequences of an ion channel mutation is ideally done in the native cardiomyocyte (CM) environment...
2012: Frontiers in Physiology
Alexander Deten, Hans Christian Volz, Sören Clamors, Sabine Leiblein, Wilfried Briest, Grit Marx, Heinz-Gerd Zimmer
OBJECTIVE: Recent reports suggest that hematopoietic stem cells (HSC) can transdifferentiate into cardiomyoctes and contribute to myocardial regeneration after injury. This concept has recently been challenged by studies in which bone-marrow (BM)-derived cells do not acquire a cardiac phenotype after direct injection into ischemic myocardium. METHODS: In this study, we analyzed the effect of increased circulating adult BM cells by stimulation with stem cell factor (SCF; 200 microg/kg/d for 7 days) and granulocyte-colony stimulating factor (G-CSF, 50 microg/kg/d for 7 days) or by peripheral delivery of isolated adult BM cells on morphological and hemodynamic parameters of mouse hearts 6 weeks after induction of chronic myocardial infarction (MI)...
January 1, 2005: Cardiovascular Research
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