نتایج جستجو برای: Differentiation

تعداد نتایج: 224048  

Background and Objectives: Control processes in osteoblastic differentiation of mesenchymal stem cells are not yet fully understood. Epigenetic mechanisms, especially the methylation of CpG Islands in the promoter of genes, are considered as one of the most important control mechanisms in stem cell differentiation. In the process of differentiation, it is debated whether only the methylation of...

Back ground: Although the cell differentiation is an inseparable part of development in multicellular organisms, the regulating molecular pathway of it still is not fully defined. In the other hand, apoptosis is a fundamental physiological process which plays an essential role in a variety of biological events during development. Moreover, recent studies have found that apoptosis shows several ...

ژورنال: پیاورد سلامت 2016
آزاد, مهدی, الحذیفی, رجاء, دهقانی فرد, علی, رضایی, سمیرا, سلالی, سعید, مشهدی خان, مائده, نوروزی نیا, مهرداد, کاویانی, سعید,

Background and Aim: Different regulation processes have an effect on osteoblastic differentiation of mesenchymal stem cells (MSCs), and among them Wnt signaling pathway is particularly desirable. In Wnt signaling pathway, Adenomatous Polyposis Coli (APC) bind to β-catenin and induce its degradation, thereby acting as a negative regulator of canonical Wnt pathway. In this study, gene expression ...

There are several differentiation methods for mesenchymal stem cells (MSCs) into hepatocyte-like cell. Investigators reported various hepatic differentiation protocols such as modifying culturing conditions or using various growth factors/cytokines. In this literature review, we compared different MSCs extraction and isolation protocols from Wharton’s jelly (WJ) and explored various MSCs differ...

Amir Atashi Fatemeh Skandari Mehdi Azad Mehrdad Noruzinia, Mohammad Hosein Ahmadi Mohammad Shahjahani Naser Mobarra, Saeid Abroun Saeid Kaviani Shaban Alizadeh, Yousef Mortazavi, Zahra Zonoubi

  Objective(s): Stem cell differentiation into different cell lineages depends upon several factors, cell cycle control elements and intracellular signaling elements, including P15INK4b and P16INK4a genes. Epigenetics may be regarded as a control mechanism which is affected by these factors with respect to their promoter structure.   Materials and Methods: The CD34 + cord blood s...

ژورنال: پیاورد سلامت 2011
سلیمانی, مسعود, فرش دوستی حق, مجید, محمودی نیامیمند, مریم, مرتضوی, یوسف, نوروزی نیا, مهرداد, کاویانی, سعید,

Background and Aim: Bone sialoprotein (BSP) is a specific marker of osteoblastic differentiation. In this research, the effect of Zoledronic Acid on BSP expression and methylation status during osteoblastic differentiation of mesenchymal stem cells (MSCs) was evaluated. Materials and Methods: In this experimental study, MSCs were isolated from human bone marrow. For osteogenic differentiation,...

Journal: :cell journal 0

objective: osteoblasts arise from multipotent mesenchymal stem cells (mscs) present in the bone marrow stroma and undergo further differentiation to osteocytes or bone cells. many factors such as proteins present in the wnt signaling pathway affect osteoblast differentiation. ror2 is an orphan tyrosine kinase receptor that acts as a co-receptor in the non-canonical wnt signaling pathway. howeve...

Journal: :cell journal 0

management of mesenchymal stem cells (mscs) capabilities to differentiate into osteogenic and chondrogenic lineages would be of utmost importance for their future use in difficult to treat cases of destroyed bone and cartilage. thus, an understanding of the epigenetic mechanisms as important modulators of stem cell differentiation might be useful. epigenetic mechanism refers to a process that r...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد مرودشت - دانشکده روانشناسی و علوم تربیتی 1387

چکیده ندارد.

Journal: :iranian journal of pathology 0
parya bameni moghaddam dept. of pathology, tehran university of medical sciences, tehran. iran fatemeh mahjoub dept. of pathology, tehran university of medical sciences, tehran. iran amirhossein emami dept. of internal medicine, tehran university of medical sciences, tehran, iran alireza abdollahi dept. of pathology ,imam hospital complex, tehran university of medical sciences, tehran, iran

background: automatic cell counter devises make the cbc differential very easy and delivering the results in few second. however, the problem with this device is facing a flag requires a time-consuming microscopic review of the specimen which causes unacceptable wait times for patient as well as costs for laboratories. in this study, we calculated the validity of wbc diff flags in sysmex xt-180...

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