in the last few years, a lot of preclinical studies showed the therapeutic potential of stem cells in spinal cord injury (sci). neural stem cells (nscs) can be differentiated into all cell types of spinal cord. nscs are cells that maintain the capacity to differentiate into brain-specific cell types, and may also replace or repair of injury in central nervous system. here in, we describe the ef...

objective: despite of many benefits, umbilical cord blood (ucb) hematopoietic stem cell (hsc) transplantation is associated with low number of stem cells and slow engraftment; in particular of platelets. so, expanded hscs and co-transfusion of megakaryocyte (mk) progenitor cells can shorten this period. in this study, we evaluated the cytokine conditions for maximum expansion and mk differentia...

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...

transforming growth factor betas are multifunctional polypeptides in the cytokine superfamily. they have a growth inhibitory role on hemopoietic progenitor cells in semisolid colony assay as well as in long-term bone-marrow culture. tgf - β2 represses stromal cells, stem cell factor gene transcription, and decreases the stability of c-kit transcripts in hemopoietic cells. tgf-β also modulates g...

multiple sclerosis (ms) is an inflammatory disease of the central nervous system (cns). inflammation caused by immune cells destroy the myelin and then axon. cns failure to complete repair results in permanent disabilities. some types of stem cells have special potentials to repair these injuries and even cure ms. neural crest stem cells with a mutual origin with cns and the ability of differen...

multipotent mesenchymal stromal cells or mesenchymal stem cells (mscs) are mainly isolated from bone marrow or fat tissue. because of their potential of multilineage differentiation towards bone, cartilage and fat tissue, they were initially evaluated to develop innovative strategies for tissue engineering applications. more recently, they have gained interest based on their immunomodulatory pr...

spermatogonial stem cells (sscs) maintain spermatogenesis throughout life in the male. maintenance of sscs and induction of spermiogenesis in vitro may provide a therapeutic strategy to treat male infertility. this study investigated in vitro differentiation of mouse sscs in presence or absence of sertoli cells, hormones and vitamins. spermatogonial populations were enriched from testes of 4-6 ...

objective(s)para-nonylphenol (p-np) is used in many industries and our previous study showed that p-np causes a reduction in rats bone marrow mesenchymal stem cells (mscs) viability. the aim of this study was to investigate the effect of p-np on osteogenic differentiation of mscs.materials and methodsmscs were isolated and expanded to 3rd passage, then cultured in dmem supplemented with osteoge...

background: embryonic stem (es) cells are pluripotent cells conventionally isolated from early embryos. studies have shown that es cells serve as a practical model for biomedical studies. objective: the aim of the present study was to optimize culture conditions for establishment of es-like colonies from nmri mouse blastocysts as well as 2-cell stage embryos. materials and methods: both expande...