objective(s) the main objective of this study was to investigate the status of chromosome stability in 3 human-mouse hybridoma cell lines over a period of time in various passages. materials and methods metaphase spreads from 3 human-mouse cell lines (hf2x653, spmo-4 and f3b6) that had been cultured in 4 successive passages, from 1 to 4 weeks, were prepared and analyzed. metaphase chromosomes s...

blood sulfhemoglobin (s-hb), total haemoglobin and phosphorous (p) level and blood cell count in 33 matches industry workers of azar abhar, who were exposed directly or indirectly to chemical agents used in the factory (subjects), were measured. the results were compared with the result of the same measurement on 14 farm workers of the region (control) and were analysed. in this study the effec...

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 ...

today’s tissue engineering is an important and interested method to treatment of  bone lesions so tissue engineering specialists and orthopedic surgeons are forced to serve as a safe alternative to current methods.the introduction ofa scaffoldthathas thebestefficiencyisamajor challengeto scientistsand researchersin this field.the aim ofthisstudy is to investigatethe polyaniline(pani) influence ...

introduction: multiple sclerosis (ms) has been recognized as a common neurodegenerative disease that occurs after an auto reactive t cells against myelin antigens.  demyelination and inflammation are the main features of this disease. the anti-inflammatory and neuroprotective roles of bone marrow-derived mesenchymal stem cells (bm-mscs) have been considered as a suitable treatment against autoi...

several sources were introduced for cell therapy after neurotrauma. there are some evidences that quiescent stem cells are located in the various regions of the adult mammalian brain including cortex, hippocampus, amygdala and striatum. but more study is needed to identify the characteristics of these cells. in the present study we investigated the possibility of isolating neural stem cells fro...

in worldwide, an estimated 40 cases per 1 million people reported with new spinal cord injuries each year. people with spinal cord injuries suffer from severe physical, psychological, social and economic problems. damaged or lost cells can't be replaced when the spinal cord is injured; therefore, its function becomes disturbed permanently. despite the significant advances in the understand...

background: atherosclerosis, a chronic inflammatory disease of the vessel wall is characterized by local and systemic immune responses to a variety of antigens. oxidized low-density lipoprotein (oxldl) is considered as an important determining factor in the pathogenesis of atherosclerosis. objective: the purpose of this study was to investigate the degree of peripheral blood mononuclear cells (...

background: dendritic cells (dcs) are professional antigen presenting cells that have an important role in the initiation of immune response. the use of maturation factors in dendritic cell differentiation provides a promising approach in immunotherapy. objective: in this study, we compared tumor necrosis factor-α, polyribocytidylic acid, lipopolysacharide and cpg oligonucleotides in inducing d...

background: tumor necrosis factor alpha (tnf-α) is a primary mediator of immune regulation and might be required in the early stages of dc development from cd34+ cells. however, details of optimal timing of exposure to tnf-α in dc development process in monocytes or non-purified hematopoitic cells are still lacking and clear benefits of this approach to the development of dcs remain to be valid...