ex vivo expansion of human umbilical cord blood cells (hucbc) is explored by several investigators to enhance the repopulating potential of hucbc. the proliferation and expansion of human hematopoietic stem cells (hsc) in ex vivo culture was examined with the goal of generating a suitable clinical protocol for expanding hsc for patient transplantation. using primary human mesenchymal stem cells...

germline and somatic stem cells are distinct types of stem cells that are dedicated to reproduction and somatic tissue regeneration, respectively. germline stem cells (gscs), which can self-renew and generate gametes, are unique stem cells in that they are solely dedicated to transmit genetic information from generation to generation. we developed a strategy for the establishment of germline st...

Stem cell therapies may be valuable in treatment of inflammatory bowel disease (IBD). Here we focus on two very different types of stem cells - hematopoietic stem cells and mesenchymal stem cells. Myeloablation and hematopoietic stem cell transplantation alter host immune response by reconstituting the recipient's blood cell lines with donor cells. Autologous hematopoietic reconstitution may "r...

BACKGROUND CD97 is a member of the epidermal growth factor-seven transmembrane (EGF-TM7) family of adhesion receptors and is broadly expressed on hematopoietic cells. The aim of this study was to investigate the expression of CD97 on hematopoietic stem- and progenitor cells (HSC/HPC). DESIGN AND METHODS CD97 expression on hematopoietic stem- and progenitor cells was studied in BALB/c, C57BL/6...

background: today, hematopoietic stem cells transplantation (hsct) has been accepted as a therapeutic approach and is widely applied in many patients with disorders of hematopoietic systems or patients with malignancies. concomitant use of this therapeutic approach with long term chemotherapeutic procedures and hospitalization requires special care. this study was conducted to examine basic nee...

the increased risk of hemolytic reactions and erythrocyte recovery delay in abo incompatible hematopoietic stem cell transplantation (hsct) is well established. effects of abo incompatibility on transplantation outcomes is evaluated in this study. we prospectively followed 501 patients undergoing allogeneic stem cell transplantation according to abo compatibility groups of minor, major and bidi...

External signals that are mediated by specific receptors determine stem cell fate. The thrombin receptor PAR1 plays an important role in haemostasis, thrombosis and vascular biology, but also in tumor biology and angiogenesis. Its expression and function in hematopoietic stem cells is largely unknown. Here, we analyzed expression and function of PAR1 in primary hematopoietic cells and their leu...

conclusions large amounts of preclinical studies have been made of stem cells and there is an increasing interest to perform these studies within the human population but preclinical studies are insufficient; therefore, much more and efficient studies should be conducted to evaluate the efficacy and safety of stem cells. context musculoskeletal injuries may be painful, troublesome, life limitin...

The concept and characteristics of different types of hematopoietic cells have been described. Hematopoietic stem cells are currently considered to exist in a variety of populations with different degrees of commitment towards a particular cell line. By a combination of animal studies and studies with hematopoietic disorders, the concept of dividing hematopoietic stem cells into uncommitted and...