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Journal ArticleDOI

Bone marrow as a potential source of hepatic oval cells.

TLDR
A stem cell associated with the bone marrow has epithelial cell lineage capability and a proportion of the regenerated hepatic cells were shown to be donor-derived.
Abstract
Bone marrow stem cells develop into hematopoietic and mesenchymal lineages but have not been known to participate in production of hepatocytes, biliary cells, or oval cells during liver regeneration. Cross-sex or cross-strain bone marrow and whole liver transplantation were used to trace the origin of the repopulating liver cells. Transplanted rats were treated with 2-acetylaminofluorene, to block hepatocyte proliferation, and then hepatic injury, to induce oval cell proliferation. Markers for Y chromosome, dipeptidyl peptidase IV enzyme, and L21-6 antigen were used to identify liver cells of bone marrow origin. From these cells, a proportion of the regenerated hepatic cells were shown to be donor-derived. Thus, a stem cell associated with the bone marrow has epithelial cell lineage capability.

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Journal ArticleDOI

Stem/progenitor cells in liver injury repair and regeneration.

TL;DR: Recent preclinical and clinical investigations that explore the therapeutic potential of stem cells in repair of liver injuries support the notion that stem cell technology may lead to the development of effective clinical modalities for human liver diseases.
Journal ArticleDOI

Characterization of the Potential Subpopulation of Bone Marrow Cells Involved in the Repair of Injured Liver Tissue

Satish Khurana, +1 more
- 01 Jun 2007 - 
TL;DR: The potential phenotype of BM cells involved in regeneration of liver from acute injury is demonstrated, primarily by the process of direct differentiation.
Journal ArticleDOI

Multiorgan engraftment and multilineage differentiation by human fetal bone marrow Flk1+/CD31-/CD34- Progenitors.

TL;DR: Results show the Flk1(+)/CD31(-)/CD34(-) cells possess remarkable differentiation potential and may thereby provide an alternative to hematopoietic stem cells for transplantation in NOD/SCID mice and thus holds therapeutic promise for treatment of genetic disorders, organ dysfunction, and tissue repair in humans.
Journal ArticleDOI

Evidence for bone marrow adult stem cell plasticity: properties, molecular mechanisms, negative aspects, and clinical applications of hematopoietic and mesenchymal stem cells transdifferentiation.

TL;DR: The present paper supports the plasticity of the bone marrow stem cells (BMSCs) by bringing the most striking and the latest evidences of the transdifferentiation properties of theBone marrow hematopoietic and mesenchymal stem cell (BMHSCs, and BMMSCs), the two BM populations of ASCs better characterized.
Journal ArticleDOI

The presence of AC133-positive cells suggests a possible role of endothelial progenitor cells in the formation of choroidal neovascularization.

TL;DR: These findings support animal studies that vasculogenesis, in addition to angiogenesis, may contribute to the neovascularization that occurs in AMD.
References
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Journal ArticleDOI

Muscle Regeneration by Bone Marrow-Derived Myogenic Progenitors

TL;DR: Transplantation of genetically marked bone marrow into immunodeficient mice revealed that marrow-derived cells migrate into areas of induced muscle degeneration, undergo myogenic differentiation, and participate in the regeneration of the damaged fibers.
Journal Article

In vivo differentiation of rat liver oval cells into hepatocytes.

TL;DR: The data indicate that oval cells can differentiate to hepatocytes and may have an important physiological function as a source of major serum proteins when hepatocytes are unable to synthesize these proteins.
Journal ArticleDOI

Presence of hematopoietic stem cells in the adult liver

TL;DR: The data obtained from the mouse study strongly suggest that hematopoietic stem cells residing in the donor liver are responsible for mixed chimerism and maintenance of tolerance after liver transplantation.
Journal Article

Expression of stem cell factor and its receptor, c-kit, during liver regeneration from putative stem cells in adult rat.

TL;DR: The SCF/c-kit system may, possibly in combination with other growth factor/receptor systems, be involved in the early activation of the hepatic stem cells as well as in the expansion and differentiation of oval cells.
Journal ArticleDOI

Variable chimerism, graft-versus-host disease, and tolerance after different kinds of cell and whole organ transplantation from Lewis to brown Norway rats.

TL;DR: Both the GVHD propensity and tolerogenicity in these experiments were closely associated with recipient tissue chimerism 30 and 100 days after the experiments began, and these observations provide guidelines that should be considered in devising leukocyte augmentation protocols for human whole organ recipients.
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