Navegando por Palavras-chave "Ischemic heart disease"

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    Mesenchymal stem cells from sternum: the type of heart disease, ischemic or valvular, does not influence the cell culture establishment and growth kinetics
    (Biomed Central Ltd, 2017) Dias, Lucinara Dadda; Casali, Karina Rabello [UNIFESP]; Ghem, Carine; da Silva, Melissa Kristocheck; Sausen, Grasiele; Palma, Patricia Bonini; Covas, Dimas Tadeu; Kalil, Renato A. K.; Schaan, Beatriz D.; Nardi, Nance Beyer; Markoski, Melissa Medeiros
    Background: In an attempt to increase the therapeutic potential for myocardial regeneration, there is a quest for new cell sources and types for cell therapy protocols. The pathophysiology of heart diseases may affect cellular characteristics and therapeutic results. Methods: To study the proliferative and differentiation potential of mesenchymal stem cells (MSC), isolated from bone marrow (BM) of sternum, we made a comparative analysis between samples of patients with ischemic (IHD) or non-ischemic valvular (VHD) heart diseases. We included patients with IHD (n = 42) or VHD (n = 20), with average age of 60 years and no differences in cardiovascular risk factors. BM samples were collected (16.4 +/- 6 mL) and submitted to centrifugation with Ficoll-Paque, yielding 4.5 +/- 1.5 x 10(7) cells/mL. Results: Morphology, immunophenotype and differentiation ability had proven that the cultivated sternal BM cells had MSC features. The colony forming unit-fibroblast (CFU-F) frequency was similar between groups (p = 0.510), but VHD samples showed positive correlation to plated cells vs. CFU-F number (r = 0.499, p = 0.049). The MSC culture was established in 29% of collected samples, achieved passage 9, without significant difference in expansion kinetics between groups (p > 0.05). Dyslipidemia and the use of statins was associated with culture establishment for IHD patients (p = 0.049 and p = 0.006, respectively). Conclusions: Together, these results show that the sternum bone can be used as a source for MSC isolation, and that ischemic or valvular diseases do not influence the cellular yield, culture establishment or in vitro growth kinetics.