1 resultado para Sartorato, Ari
em Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP)
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Resumo:
Transplantation of pancreatic islets isolated from organ donors constitutes a promising alternative treatment for type 1 diabetes, however, it is severely limited by the shortage of organ donors. Ex vivo islet cell cultures appear as an attractive but still elusive approach for curing type 1 diabetes. It has recently been shown that, even in the absence of fibrotic over-growth, several factors, such as insufficient nutrition of the islet core, represent a major barrier for long-term survival of islets grafts. The use of immobilized dispersed cells may contribute to solve this problem due to conceivably easier nutritional and oxygen support to the cells. Therefore, we set out to establish an immobilization method for primary cultures of human pancreatic cells by adsorption onto microcarriers (MCs). Dispersed human islets cells were seeded onto Cytodex1 microcarriers and cultured in bioreactors for up to eight days. The cell number increased and islet cells maintained their insulin secretion levels throughout the time period studied. Moreover, the cells also presented a tendency to cluster upon five days culturing. Therefore, this procedure represents a useful tool for controlled studies on islet cells physiology and, also, for biotechnological applications.