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Mesenchymal stem cell therapy for heart disease


Mesenchymal stem cells (MSC) are adult stem cells with capacity for self-renewal and multi-lineage differentiation. Initially described in the bone marrow, MSC are also present in other organs and tissues. From a therapeutic perspective, because of their easy preparation and immunologic privilege, MSC are emerging as an extremely promising therapeutic agent for tissue regeneration and repair. Studies in animal models of myocardial infarction have demonstrated the ability of transplanted MSC to engraft and differentiate into…

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Intramyocardial Injections of Human Mesenchymal Stem Cells Following Acute Myocardial Infarction Modulate Scar Formation and Improve Left Ventricular Function


Cell therapy is a promising treatment modality to improve heart function in acute myocardial infarction. However, the mechanisms of action and the most suitable cell type have not been finally determined. We performed a study to compare the effects of mesenchymal stem cells (MSCs) harvested from different tissues on LV function and explore their effects on tissue structure by morphometry and histological staining for species and lineage relationship. MSCs from skeletal muscle (SM-MSCs) and adipose…

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Clinical Study Using Adipose-Derived Mesenchymal-Like Stem Cells in Acute Myocardial Infarction and Heart Failure


Adipose tissue represents an abundant, accessible source of regenerative cells that can be easily obtained in sufficient amount for therapy. Adipose-derived regenerative cells (ADRC) are comprised of leukocytes, smooth muscles, endothelial cells, and mesenchymal stem cells. In contrast to bone-marrow-derived MSC, the abundance of adipose tissue in patients and the higher frequency per unit mass of regenerative cells allow for the isolation of cells in therapeutic meaningful amounts in less than 2h after donor tissue…

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Tracking Long-Term Survival of Intramyocardially Delivered Human Adipose Tissue-Derived Stem Cells Using Bioluminescence Imaging


Purpose Transplantation of a regenerative cell population derived from human subcutaneous adipose tissue (hASCs) for cardiac regeneration represents a promising therapy due to the capacity of these cells for proliferation and differentiation. Understanding the fate of injected hASCs would help to understand how hASCs work in vivo. The aim of this study was to track the long-term fate, including survival, differentiation, proliferation, apoptosis, migration, and growth factor secretion of intramyocardially injected hASCs following experimental acute…

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Adipose-derived Stem Cells for Myocardial Infarction


In recent years, stem cell treatment of myocardial infarction has elicited great enthusiasm upon scientists and physicians alike, thus making the finding of a suitable cell a compulsory subject for modern medicine. Due to its potential, accessibility and efficiency of harvesting, adipose tissue has become one of the most attractive sources of stem cells for regenerative therapies. The differentiation capacity and the paracrine activity of these cells has made them an optimal candidate for the…

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First Experience in Humans Using Adipose Tissue–Derived Regenerative Cells in the Treatment of Patients With ST-Segment Elevation Myocardial Infarction


In preclinical animal models of acute myocardial infarction (AMI), administration of freshly isolated adipose tissue–derived regenerative cells (ADRCs) immediately after the AMI improved left ventricular (LV) function and myocardial perfusion (1-2). The predominant working mechanism of ADRC therapy in AMI is believed to be through paracrine release of antiapoptotic, immunomodulatory, and proangiogenic factors. These factors evoke cardiomyocyte salvage and stimulate neoangiogenesis in the infarct border zone and eventually result in reduced infarct scar formation and…

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IFATS Collection: Human Adipose Tissue-Derived Stem Cells Induce Angiogenesis and Nerve Sprouting Following Myocardial Infarction, in Conjunction with Potent Preservation of Cardiac Function


The administration of therapeutic cell types, such as stem and progenitor cells, has gained much interest for the limitation or repair of tissue damage caused by a variety of insults. However, it is still uncertain whether the morphological and functional benefits are mediated predominantly via cell differentiation or paracrine mechanisms. Here, we assessed the extent and mechanisms of adipose-derived stromal/stem cells (ASC)-dependent tissue repair in the context of acute myocardial infarction. Human ASCs in saline…

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IFATS Collection: Human Adipose Tissue-Derived Stem Cells Induce Angiogenesis and Nerve Sprouting Following Myocardial Infarction, in Conjunction with Potent Preservation of Cardiac Function


The administration of therapeutic cell types, such as stem and progenitor cells, has gained much interest for the limitation or repair of tissue damage caused by a variety of insults. However, it is still uncertain whether the morphological and functional benefits are mediated predominantly via cell differentiation or paracrine mechanisms. Here, we assessed the extent and mechanisms of adipose-derived stromal/stem cells (ASC)-dependent tissue repair in the context of acute myocardial infarction. Human ASCs in saline…

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Intracoronary administration of autologous adipose tissue-derived stem cells improves left ventricular function, perfusion, and remodelling after acute myocardial infarction


Aims This study was designed to assess whether intracoronary application of adipose tissue-derived stem cells (ADSCs) compared with bone marrow-derived stem cells (BMSCs) and control could improve cardiac function after 30 days in a porcine acute myocardial infarction/reperfusion model. Methods and results An acute transmural porcine myocardial infarction was induced by inflating an angioplasty balloon for 180 min in the mid-left anterior descending artery. Two million cultured autologous stem cells were intracoronary injected through the…

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Human Umbilical Mesenchymal Stem Cells Promote Recovery After Ischemic Stroke


Background and Purpose—Stroke is a cerebrovascular defect that leads to many adverse neurological complications. Current pharmacological treatments for stroke remain unclear in their effectiveness, whereas stem cell transplantation shows considerable promise. Previously, we have shown that human umbilical mesenchymal stem cells (HUMSCs) can differentiate into neurons in neuronal-conditioned medium. Here we evaluate the therapeutic potential of HUMSC transplantation for ischemic stroke in rats. Methods—Focal cerebral ischemia was produced by middle cerebral artery occlusion and reperfusion….

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