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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

A role for extrarenal cells in the regeneration following acute renal failure

TL;DR: This proof-of-principle clinical observation demonstrates that extrarenal cells can participate in the regenerative response following ATN, and provides rationale for the cellular therapy of acute renal failure.
Journal ArticleDOI

Bone Marrow as a Source of Endothelial Cells and NeuN-Expressing Cells After Stroke

TL;DR: Bone marrow–derived cells are a source of endothelial cells and NeuN-expressing cells after cerebral infarction and this plasticity may be exploited in the future to enhance recovery after stroke.
Journal ArticleDOI

Adult bone marrow-derived cells trans-differentiating into insulin-producing cells for the treatment of type I diabetes

TL;DR: It is demonstrated that adult BM cells are capable of trans-differentiating into a pancreatic lineage in vitro and may represent a pool of cells for the treatment of diabetes mellitus.
Journal ArticleDOI

Origin and structural evolution of the early proliferating oval cells in rat liver.

TL;DR: The data demonstrate that AAF-induced oval cells were preferentially generated by proliferation of the terminal biliary ductules that the authors suggest constitute the primary hepatic stem cell niche.
Journal ArticleDOI

Human embryonic stem cells: research, ethics and policy

TL;DR: Some of the ethical issues surrounding the use of human embryos and human ES cells in the context of state-of-the-art research on the development of stem cell based transplantation therapy are addressed.
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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