introduction:first, definition the stem cell refers to those cells that are still not clear and are not equipped for a particular task. these cells have proliferative properties and  ability to differentiate into other types of cells have become. this characteristic of stem cells to self-directed has absorbed professional opinion that extensive research is done in this regard. nowadays, stem ce...

Trying to use embryonic stem cells about 20 years ago, working with animals,  especially rats began. During these years , many experiments in mouse embryonic stem cells to transform into a variety of cells and transplanting them were led to remarkable success . In the next issue of human stem cells were considered successful until finally in 1998 the first report was published in the proliferat...

objective(s): three-dimensional biomimetic scaffolds have widespread applications in biomedical tissue engineering due to similarity of their nanofibrous architecture to native extracellular matrix. co-culture system has stimulatory effect on chondrogenesis of adult mesenchymal stem cells. this work presents a co-culture strategy using human articular chondrons and adipose-derived stem cells (a...

Background  Isolation of adipose tissue mesenchymal stem cells (MSCs) with current enzymatic methods has some limitations. For example, it is costly and time-consuming and results in a heterogeneous cell population that making compromise proliferation and differentiation of MSCs. Also, it is accompanied with the increased risk of culture contaminations because of several handling steps.In this...

800x600 unfortunately, at present, degenerative retinal diseases such as retinitis pigmentosa remains untreatable. patients with these conditions suffer progressive visual decline resulting from continuing loss of photoreceptor cells and outer nuclear layers. however, stem cell therapy is a promising approach to restore visual function in eyes with degenerative retinal diseases such as retiniti...

background: despite the extensive information available in the literature, cell surface marker signature of human amniotic epithelial cells (haecs) remains controversial. the aim of the present study was to characterize immuno-phenotypic features, proliferative capacity and immunogenicity of haecs. we also tested whether expression of some cell surface markers is influenced by the type of tryps...

objective: allogeneic transplantation with umbilical cord blood (ucb) in adult recipients is limited mainly by a low cd34+ cell dose. to overcome this shortcoming, human placenta as a novel source of human mesenchymal progenitor cell (mpc)- unrestricted somatic stem cells (ussc)- was incorporated in an attempt to expand cd34+ cells from ucb. to provide a similar environment in vitro, we coated ...

Arm grooves of star-fish have mesenchymal stem cells derived from adipose tissue cell. Widespread studies have shown that stem cells derived from adipose-derived mesenchymal stem cell from bone marrow have many similarities in terms of the ability to differentiate into a variety of tissues. Most of the animals live in warm and shallow waters and the waters of this feature is that it is low in d...

background: characteristics of differentiated osteoblasts from adipose derived stem cells (adscs) in compared with isolated osteoblasts from normal bone such as calvaria are unknown. the aim of this study was determination and comparison of phenotypic characterization between differentiated osteoblasts from stem cells and calvaria osteoblasts in vitro . methods: in this study, mesenchymal stem ...