Osteoblasts, osteoclasts, chondrocytes, and macrophages that participate in the bone repair process are derived from hematopoietic stem cells (HSCs) and mesenchymal stem cells (MSCs). However, the roles of these stem cells during the repair of injured bone tissue are still unclear. In the present study, we examined the effects of bone defect on HSCs and MSCs in bone marrow and spleen in 75 mice...

Hematopoietic stem-cell transplantation (HSCT) refers to a procedure in which hematopoietic stem cells are infused to restore bone marrow function in cancer patients who receive bone-marrowtoxic doses of cytotoxic drugs, with or without whole-body radiation therapy. Bone marrow stem cells may be obtained from the transplant recipient (i.e., autologous HSCT) or from a donor (i.e., allogeneic HSC...

Abstract A promising strategy to increase the numbers of hematopoietic stem cells (HSCs) for clinical applications, like cell transplantation, is offered by advanced in vitro culture systems. We developed artificial 3D bone marrow-like scaffolds made polydimethylsiloxane (PDMS) mimicking natural HSC niche . These PDMS combination with an optimized medium allow amplification high undifferentiate...

Spermatogenesis is a self-renewing process leading to production of spermatozoa in adult testis. The existence of male germinal stem cells was demonstrated by regeneration of spermatogenesis after transplantation of total testicular germ cells in testis [1], and we have previously shown that mouse testicular cells contain a side population (SP) of stem cells (Hoechst 33342 fluorescent dye efflu...

Summary Hepatosplenic γ/δ T-cell lymphoma (HSTL) is a very rare, aggressive extranodal affecting mainly young adults. Clinically, presents with symptomatic hepatosplenomegaly and systemic symptoms but without lymphadenopathy. The diagnosis confirmed after careful evaluation of bone marrow liver biopsies or, in some cases, diagnostic splenectomy. Overall, survival short regardless chemotherapy r...

BACKGROUND Stem cells, with their regeneration capacity, long-term viability, and differentiation characteristics, have indispensable biological properties. As described by Hauner and Grigoradis et al., mesenchymal stem cell originating from adipose or bone marrow can be differentiated into many tissues such as adipocyte, chondrocyte, myeloblast, and osteoblast. The aim of our study is to compa...

Bone marrow-derived stem cells have been shown to participate in solid organ repair after tissue injury. Animal models suggest that epithelial malignancies may arise as aberrant stem cell differentiation during tissue repair. We hypothesized that if bone marrow stem cells participate in human neoplasia, then solid organ cancers developing after allogeneic bone marrow transplantation (ABMT) migh...

The viability of cryopreserved mouse fresh and postmortem bone marrow cells was studied using methylcellulose clonal cell culture assay and the murine spleen colony technique. This study clearly indicates the presence of pluripotent hemopoietic stem cells in cryopreserved murine postmortem bone marrow cells. The viability of granulocytic precursors in both fresh and postmortem bone marrow cells...

Bone marrow fibrosis is a hallmark of primary and post ET/PV myelofibrosis. To investigated the impact of replacement of the hematopoietic system in myelofibrosis patients by allogeneic stem cell transplantation on bone marrow fibrosis, we studied bone marrow fibrosis on bone marrow samples from 24 patients with myelofibrosis before and after dose-reduced conditioning followed by allogeneic ste...