introduction: during the last decade, advances in tissue engineering and stem cell-based tooth regeneration have provided realistic and attractive means of replacing lost or damaged teeth. the first adult stem cells isolated from dental tissues were dental pulp stem cells (dpscs). when transplanted with hydroxyl apatite/tri calcium phosphate (ha/tcp) powder, they formed a dentin-like structure ...

background :gelatin and chitosan are known as biodegradable and biocompatible biopolymers.these biopolymers have recently receivedincreasingly more attention for tissueengineering.the aim of this study was to evaluate the toxicity effects of gelatin-chitosan film on bone marrow stromal cell(bmscs) culture in rat.                                                  materials & methods: first, gelat...

introduction:   mesenchymal stem cells have the potential of self-renewal and differentiation into different cell types, including blood cells, heart, nerves and cartilage, and have unlimited power for division. these cells can be obtained from cord, before implantation from fertilized cells and also from various tissues of adults although the differentiation power and the ability to reproduce ...

background: pancreatic islet transplantation has emerged as a promising treatment for type i diabetes. however, its efficacy is severely hampered due to poor islet engraftment and revascularization, which have been resulted to partially loss of transplanted islets. it has been shown that local delivery of vascular endothelial growth factor (vegf) could accelerate transplanted islet revasculariz...

background recently, the clinical use of low power lasers has increased, and it is said that wound healing is accelerated by their irradiation. the aim of this study was evaluation of the effect of platelet-rich plasma on proliferation and differentiation of human dental pulp stem cells with or without ga-al-as laser. methods: in this experimental study, human lower third molar dental pulp cell...

background  recent investigations show that both proliferation and secretion of macromolecules by cells can be regulated by low level laser therapy (lllt). the aim of this study was to determine whether lllt could induce a bio-stimulatory effects on human gingival fibroblasts (hgf3-pi 53). therefore, the effect of laser irradiation on human gingival cell proliferation and collagen type i gene e...

the complexity of multiple sclerosis (ms) and the incompetence of a large number of promise treatments in ms urge us to plan new and more effective therapeutic approaches that aim to suppress ongoing autoimmune responses and induction of local endogenous regeneration. emerging data propose that hematopoietic, mesenchymal and neural stem cells have the potential to restore self-tolerance, to pro...

background dox is a powerful chemotherapeutic agent used in the treatment of solid tumors and malignant hematological diseases. however, its cardiac toxicity limits the clinical usefulness of this drug. previous reports have shown corticosteroids induce a cytoprotective effect on cardiomyocytes. mouse transgenic embryonic stem cell-derived pure cardiomyocytes may be considered as a model for as...

background the ability to follow the distribution and migration of biologically active cells in human is essential for the development of cell-based therapies and diagnostics. nuclear medicine imaging is widely applied in clinic as an attractive technique for in vivo wbc and stem cell tracking. the aim of this study was to evaluate prosthesis infection of a 51 years old man with previous histor...

background the aim of this clinical trial was the assessment of safety and efficacy of submocosal and periurethral injections of peripheral blood derived autologous stem cells along with platelets, and focused on outcome for six months. methods an open, prospective study was conducted on 10 patients presenting with stress urinary incontinence. at the baseline (pre-operative), 1, 3 and 6 months ...