this study discusses the effect of complexes of chitosan grafted polyethylenimine(ch-pei) with plasmid dna on viability of mesenchymal stem cells(mscs) derived from human marrow. ch-pei/pdna nanoparticles were synthesized through the complex coacervation method using pires plasmid containing green fluorescent protein (gfp) gene. to confirm the complexation, samples were run through an agarose g...

Vpr, a 96 amino acid protein, encoded by the human immunodeficiency virus type I (HIV-1), is important for efficient infection of mononuclear phagocytic cells. These cells are abundant in whole bone marrow, which can easily be cultured in vitro to support hematopoiesis. Our experiments indicate that Vpr plays a role in the potent activation of murine and human mononuclear phagocytic cells withi...

Whether the level of terminal deoxynucleotidyl transferase (TdT) activity in mononuclear cells from bone marrow and peripheral blood has prognostic significance has been analyzed prospectively in 164 children with T and non-T, non-B marked acute lymphoblastic leukemia (ALL). TdT was measured at diagnosis to assess its value as a predictor of duration of remission and length of survival. It was ...

Bone remodeling requires cooperation between osteoclasts and other specialized or accessory bone cell populations by mechanisms that have not been completely elucidated. Here we describe the expression and functional role of the proto-oncogene c-kit and of its specific ligand stem cell factor (SCF) on human osteoclasts, osteoblasts, and stromal cells derived from different sources. Our results ...

Vpr, a 96 amino acid protein, encoded by the human immunodeficiency virus type I (HIV-1), is important for efficient infection of mononuclear phagocytic cells. These cells are abundant in whole bone marrow, which can easily be cultured in vitro to support hematopoiesis. Our experiments indicate that Vpr plays a role in the potent activation of murine and human mononuclear phagocytic cells withi...

Rabbits have the capacity to regenerate holes in their ears by forming a blastema, a tissue that is made up of a group of undifferentiated cells. The purpose of the present study was to isolate and characterize blastema progenitor cells and compare them with marrow mesenchymal stem cells (MSCs). Five New Zealand white male rabbits were used in the present study. A 2-mm hole was created in the a...

OBJECTIVES Stem cell therapy may be useful in chronic myocardial infarction (MI); this is conceivable, but not yet demonstrated in humans. BACKGROUND After acute MI, bone marrow-derived cells improve cardiac function. METHODS We treated 18 consecutive patients with chronic MI (5 months to 8.5 years old) by the intracoronary transplantation of autologous bone marrow mononuclear cells and com...

arm grooves of star-fish have mesenchymal stem cells derived from adipose tissue cell. widespread studies have shown that stem cells derived from adipose-derived mesenchymal stem cell from bone marrow have many similarities in terms of the ability to differentiate into a variety of tissues. most of the animals live in warm and shallow waters and the waters of this feature is that it is low in d...

Mast cells are bone marrow derived hemopoietic (Kitamura, et al. [1-3]). The mast cell is one of the important in immune system. It from multipotent hematopoietic progenitor cells. produces a number cytokines to augment responses, growth, and differentiation other