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• W2276831704 abstract "Acute Kidney Disease (CKD) is a major public health problem that affects some 3-7% of patients admitted to the hospital and approximately 25-30% of patients in the intensive care unit. None of the existing therapies are exempt from side effects and kidney physiological functionality is never restored. Transplantation has been reported as the preferred cure for CKD management but organ shortage and risks due to the immunosuppressive therapy makes it far from being the perfect treatment for ESRD. In this study we have focused our attention on finding novel strategies, in vitro and in vivo, to obtain kidney regeneration in case of acute and chronic kidney damage. First we have demonstrated the ability of hAFSCs to survive, proliferate and integrate into the embryonic kidney, while it undergoes organ development, in an in vitro culture system. We observed the presence of hAFSCs within kidney primordial, including tubules and developing nephrons. Thus, hAFSCs seem to have the capacity to undergo the expected mesenchymal to epithelial transition that occurs in normal renal development and are induced to express important early kidney markers such as GDNF, ZO-1 and Claudin. Moreover, hAFSCs do not appear to require prior genetic modification or exogenous production of kidney proteins for their differentiation to occur. This is a very important advantage that hAFSCs have for potential future regenerative or bioengineering application. With the in vivo experiments, we have demonstrated that early direct injection of hAFSCs into the kidney strongly ameliorates ATN injury as reflected by more rapid resolution of tubular structural damage and by normalization of creatinine and BUN levels. In addition, our data show evidence of immunomodulatory and antinflammatory effect of hAFSCs, at an early time point, comparable in magnitude to endogenous cytokine production. Understanding how donor and host cells combine to attenuate tubular damage may lead eventually to the application of hAFSCs for therapeutic purposes in acute kidney diseases.Nonetheless, beside the presence of a small number (1%) of cells with pluripotent characteristics, the composition of the other 99% of Amniotic Fluid cells is diverse, with a great amount of cells exhibiting commitment to a defined germ line or cellular endpoint.There seems to be clear evidence for the existence of progenitor cells in Amniotic Fluid, which can give rise to different cell types of mature organs. By 17 weeks of gestation is notable an increase tissue specific cellular presence and this data may indicate that the choice of the time point for cell selection is fundamental. In addition, we demonstrated in the amniotic fluid, the presence of a renal population with specific traits of commitment. In particular, the presence of podocytes at both undifferentiated and almost mature stages could favour their use for kidney regeneration in vitro and in vivo animal models. The presence and identification of specific renal progenitor cells in the Amniotic Fluid, committed to different compartments of the kidney environment, could represent a valuable new tool for regenerative purposes with regards to the treatment of a broad range of renal diseases. The discovery of renal specific progenitor cells within Amniotic Fluid could bring a breakthrough in the study for novel and more selective approaches in the renal therapy. However, the real pluripotential capability of these progenitors cells, in particular the kidney progenitors presenting more differentiation characteristics, has to be established. Moreover, their potential for survival, proliferation, integration, and differentiation needs to be assessed in in vivo models involving different types of renal damage." @default.
• W2276831704 created "2016-06-24" @default.
• W2276831704 creator A5077361295 @default.
• W2276831704 date "2010-01-26" @default.
• W2276831704 modified "2023-09-27" @default.
• W2276831704 title "AMNIOTIC FLUID STEM CELLS AND KIDNEY REGENERATION" @default.
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