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 ...

background mandibular continuity defects occur after tumor resection, maxillofacial injury, or osteomyelitis. despite the current availability of a plethora of treatment modalities, bone substitutes, and various clinical adjuncts, an exact reconstructive recapitulation of large bony defects continues to be beyond reach. in this clinical pilot study, we report a novel method for reconstruction o...

stem cells are undifferentiated biological cells that can differentiate into specialized cells and can divide (through mitosis) to produce more stem cells. they are found in multicellular organisms. in mammals, there are two broad types of stem cells: embryonic stem cells, which are isolated from the inner cell mass of blastocysts, and adult stem cells, which are found in various tissues. in ad...

background chronic allograft nephropathy(can)  is one of the most common causes of chronic and end stage renal disease. it  is defined with mainly tubular atrophy and  interstitial fibrosis and no evidence of any other etiology, or functional disorder that caused at least three months after transplantation . control of risk factors (htn,dm,hlp, …) and limiting  usage of calcineurin inhibitors o...

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.                                                  material & methods: first, gelatin...

background cleft palate (cp) is a common congenital defect. it makes serious difficulties for cleft-affected children. the gold standard of care is autogenous bone grafting which may cause additional problems in donor site along with disappointing results. tissue engineering is a promising solution for a widespread range of defects and disorders. it is reasonable to utilize this novel technolog...

background: mesenchymal stem cells (mscs) are multipotent cells, capable of differentiating into different cell lines.they can sense their surrounding biochemical and biophysical factors, which play major roles in their differentiation toward different phenotypes. therefore, the exposure of these cells to endothelial growth factor (vegf) as well as hemodynamic biomechanical forces, which act on...

introduction: mesenchymal stem cells can be isolated from adult tissues, such as the adipose tissue, or other sources. among all these sources, adipose tissue because of easy access, and placenta due to its immunomodulatory properties, in addition to another useful properties, were attracted more attention to themselves. isolation and comparing these two different sources can help us for access...

introduction  insulin-like growth factor i (igf-i) which is produced in abundance in the normal adult liver, is deeply involved in hepatocyte survival, growth, and differentiation during liver development. igf-i plays the roles via the receptor (igf-ir) signaling pathway. igf-ir unlike igf-i is expressed strongly in the developing liver, but much more weakly in adults. objective:  we hypothesiz...

background  the mammary gland in humans is a dynamic organ that undergoes significant developmental changes during pregnancy, lactation, and involution. stem cells derived from human breast milk possess the adult stem cell-like characteristics such as self-renewal, proliferative and differentiate potential. this source of stem cells avoids invasive procedures and the ethical controversy of embr...