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Journal ArticleDOI

Regenerating functional myocardium: Improved performance after skeletal myoblast transplantation

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TLDR
In rabbits in which myoblasts were incorporated, myocardial performance was improved and the ability to regeneratefunctioning muscle after autologous myoblast transplantation could have a important effect on patients after acuteMyocardial infarction.
Abstract
The adult heart lacks reserve cardiocytes and cannot regenerate. Therefore, a large acute myocardial infarction often develops into congestive heart failure. To attempt to prevent this progression, we transplanted skeletal myoblasts into cryoinfarcted myocardium of the same rabbits (autologous transfer), monitored cardiac function in vivo for two to six weeks and examined serial sections of the hearts by light and electron microscopy. Islands of different sizes comprising elongated, striated cells that retained characteristics of both skeletal and cardiac cells were found in the cryoinfarct. In rabbits in which myoblasts were incorporated, myocardial performance was improved. The ability to regenerate functioning muscle after autologous myoblast transplantation could have a important effect on patients after acute myocardial infarction.

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Human Mesenchymal Stem Cells Differentiate to a Cardiomyocyte Phenotype in the Adult Murine Heart

TL;DR: The persistence of the engrafted hMSCs and their in situ differentiation in the heart may represent the basis for using these adult stem cells for cellular cardiomyoplasty.
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Mobilized bone marrow cells repair the infarcted heart, improving function and survival

TL;DR: In this article, the authors demonstrate that transplanting primitive bone marrow cells (BMC) into the border zone of acute myocardial infarcts resulted in a significant degree of tissue regeneration 27 days later.
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Repair of Infarcted Myocardium by Autologous Intracoronary Mononuclear Bone Marrow Cell Transplantation in Humans

TL;DR: Ten patients who were treated by intracoronary transplantation of autologous, mononuclear bone marrow cells (BMCs) in addition to standard therapy after MI found that the infarct region had decreased significantly within the cell therapy group and was also significantly smaller compared with the standard therapy group.
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Regeneration of ischemic cardiac muscle and vascular endothelium by adult stem cells

TL;DR: The results demonstrate the cardiomyogenic potential of hematopoietic stem cells and suggest a therapeutic strategy that eventually could benefit patients with myocardial infarction.
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Human embryonic stem cells can differentiate into myocytes with structural and functional properties of cardiomyocytes.

TL;DR: The human ES cell--derived cardiomyocytes displayed structural and functional properties of early-stage cardiomers, which may have significant impact on the study of early human cardiac differentiation, functional genomics, pharmacological testing, cell therapy, and tissue engineering.
References
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Genetically selected cardiomyocytes from differentiating embronic stem cells form stable intracardiac grafts.

TL;DR: A simple genetic manipulation can be used to select essentially pure cultures of cardiomyocytes from differentiating ES cells that are suitable for the formation of intracardiac grafts, and should be applicable to all ES-derived cell lineages.
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Linearity of the Frank-Starling relationship in the intact heart: the concept of preload recruitable stroke work.

TL;DR: The Frank-Starling relationship generally has been examined with filling pressure as the index of preload, resulting in a curvilinear function that plateaus at higher filling pressures, which is proposed as a potential measure of intrinsic myocardial performance independent of loading, geometry, and heart rate.
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Formation of nascent intercalated disks between grafted fetal cardiomyocytes and host myocardium

TL;DR: The results suggest that intracardiac grafting might provide a useful approach for myocardial repair, provided that the grafted cells can contribute to myocardIAL function.
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Cellular cardiomyoplasty: Myocardial regeneration with satellite cell implantation

TL;DR: The hypothesis that skeletal muscle satellite cells implanted into injured myocardium can differentiate into cardiac muscle fibers and thus repair damaged heart muscle is tested and data are consistent with the hypothesis of milieu-influenced differentiation of satellite cells into cardiac-like muscle cells.
Journal ArticleDOI

Factors which affect the diastolic pressure-volume curve.

TL;DR: The observation that the pressure-volume curve changes with disease motivated considerable effort to compute a clinical index of cardiac stiffness to quantify the extent and severity of ischemia.
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