نتایج جستجو برای: mesanchymal stem cells

تعداد نتایج: 1506203  

Journal: :گوارش 0
negin raei saeid latifi-navid saber zahri

helicobacter pylori was the main cause of gastric cancer (gc) in all over the world that results in intestinal- and diffuse-type carcinoma. infection by this bacterium remains chronic for a long time. in vitro studies have highlighted the role of stem cells in gc. h. pylori infection results in tissue injury and the adult/tissue stem cells subsequently start to replace the dead cells. the genet...

Objective(s):Mesenchymal stem cells (MSC) can be isolated from adult tissues such as adipose tissue and other sources. Among these sources, adipose tissue (because of easy access) and placenta (due to its immunomodulatory properties, in addition to other useful properties), have attracted more attention in terms of research. The isolation and comparison of MSC from these two sources provides a ...

Journal: :international journal of reproductive biomedicine 0
maryam hosseinzadeh shirzeily parichehr pasbakhsh fardin amidi kobra mehrannia

background: recent publications about differentiation of stem cells to germ cells have motivated researchers to make new approaches to infertility. in vitro production of germ cells improves understanding differentiation process of male and female germ cells. due to the problem of using embryonic stem cells (esc), it’s necessary the mentioned cells be replaced with some adult multi-potent stem ...

Journal: :avicenna journal of medical biotechnology 0

background: niche cells, regulating spermatogonial stem cells (sscs) fate are believed to have a reciprocal communication with sscs. the present study was conducted to evaluate the effect of ssc elimination on the gene expression of glial cell line-derived neurotrophic factor (gdnf), fibroblast growth factor 2 (fgf2) and kit ligand (kitlg), which are the main growth factors regulating sscs deve...

Journal: :physiology and pharmacology 0
hossein baharvand department of stem cells, royan institute, tehran, iran bijan hatami mohammad massumi

introduction: to evaluate the camp -mediated ibmx (3-isobutyle -1-methyl xanthin) and db-camp (dibutyryl camp) effects on differentiation of human embryonic stem cells (hescs) into nerve cells were the objectives of this study. methods: we have used royan h1 hesc- derived embryoid bodies with four treatment groups: six days treatment with ibmx (5×10 -4m) and db-camp (10 -9m) (referred to as cam...

Journal: :iranian biomedical journal 0
mehri fayazi mojdeh salehnia saeideh ziae

background: the aim of this study was to investigate the percentage of the stem cells population in human endometrial tissue sections and cultured cells at fourth passage. methods: human endometrial specimens were divided into two parts, one part for morphological studies and the other part for in vitro culture. full thickness of human normal endometrial sections and cultured endometrial cells ...

Journal: :journal of dentistry, tehran university of medical sciences 0
sara soheilifar department of priodontics, faculty of dentistry, hamadan university of medical sciences, hamadan, ir iran iraj amiri research center for endometrium and endometriosis, hamadan university of medical sciences, hamadan, ir iran mohsen bidgoli mohsen bidgoli: assistant professor, priodontics department, faculty of dentistry, hamadan university of medicalsciences, hamadan, iran morad hedayatipanah morad hedayatipanah, department of priodontics, faculty of dentistry, hamadan university of medical sciences, hamadan, ir iran. tel: +98-9188413990, e-mail: [email protected].

objectives : stem cell (sc) therapy is a promising technique for tissue regeneration. this study aimed to compare the viability and proliferation ability of periodontal ligament stem cells (pdlscs) isolated from the periodontium of healthy and periodontitis-affected teeth to obtain an autologous, easily accessible source of scs for tissue regeneration in periodontitis patients. materials and me...

Journal: :مجله علوم اعصاب شفای خاتم 0
maryam borhani-haghighi a. shefa neuroscience research center, khatam alanbia hospital, tehran, iran b. department of anatomy, tehran university of medical sciences, tehran, iran fatemeh alipour shefa neuroscience research center, khatam alanbia hospital, tehran, iran

naturally the brain is ineffective in regenerating functional tissue after disease or injury, so to overcome these defects innovative curative strategies such as stem cell transplantation and tissue engineering have to be considered. researchers investigate the use of strategies to attain better functional repair results. one of the important challenges of effective transplantation is the deliv...

Journal: :modares journal of medical sciences: pathobiology 2012
sahba mobini mehran solati-hashjin saeed hesaraki michael gelinsky

objective: one of the major issues in bone tissue engineering is the design and fabrication of bioactive, bioresorbable porous 3d scaffolds capable of maintaining their structure and integrity over a predictable period of time. one such approach is the fabrication of composite scaffolds. methods: in this study we present fabrication and characterization of novel silk/bioglass-composite scaffold...

Journal: :iranian journal of pediatric hematology and oncology 0
fatemeh eskandari department of hematology, school of medical sciences, tarbiat modares university, tehran, iran hoda pourkarim department of hematology, allied medical school, tehran university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه تربیت مدرس (tarbiat modares university) mehdi sahmani department of clinical biochemistry, cellular and molecular research center, qazvin, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) mehdi goudarzi department of microbiology, school of medicine, shahid beheshti university of medical science, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی قزوین (qazvin university of medical sciences) naser mobarra . stem cell research center, school of medicine, golestan university of medical sciences, gorgan, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) ali dehghanifard sarem cell research center, sarem women’s hospital, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی گلستان (golestan university of medical sciences)

background: vhl (von hippel-lindau), runx-3 (runt-related transcription factor 3), e-cadherin (epithelial cadherin), p15 (ink4a, cyclin dependent kinase inhibitor), and p16 (ink4b) genes are essential in hematopoiesis. the aim of this study was to explore the correlation between gene expression and promoter methylation in cd34+ stem cells before and after differentiation to erythroid lineage. m...

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