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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
751

Stromal precursor cells : purification and the development of bone tissue / Stan Gronthos.

Gronthos, Stan January 1998 (has links)
Bibliography: leaves 152-223. / xxiii, 223, [137] leaves, [27] leaves of plates : ill. (chiefly col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Experiments were designed to identify and purify human bone marrow stromal precursor cells by positive immunoselection, based on the cell surface expression of the VCAM-1 and STRO-1 antigens. The data presented demonstrates a hierarchy of bone cell development in vitro. / Thesis (Ph.D.)--University of Adelaide, Dept. of Orthopaedics Surgery and Trauma, 1998
752

Histone gene "knock-out" in mouse embryonic stem cells / by Varaporn Thonglairoam.

Thonglairoam, Varaporn January 1994 (has links)
Bibliography: leaves 113-126. / v, 126, [113] leaves, [10] leaves of plates : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Studies the biological significance of the mouse Listone variant H2A.Z. Describes the isolation and characterisation of H2A.Z genomic clones from different mouse genomic libraries; H2A.Z gene targeting in mouse E14 embryonic stem cells; and an attempt to generatae ES cell lines and mice which lack the functional H2A.Z protein to investigate H2A.Z function in vitro and in vivo. / Thesis (Ph.D.)--University of Adelaide, Dept. of Biochemistry, 1995?
753

Ovine bone marrow mesenchymal stem cells : isolation, characterisation, and developmental potential for application in growth plate cartilage regeneration.

McCarty, Rosa Clare January 2008 (has links)
Title page, contents and abstract only. The complete thesis in print form is available from the University of Adelaide Library. / The growth plate is a cartilaginous structure located at the proximal and distal ends of immature long bones, which contributes to longitudinal growth through the process of endochondral ossification. Cartilage has a limited ability to regenerate and in children, injury to the the growth plate can result in limb length discrepancies and angular deformity, due to formation of a bone bridge at the damaged site which disturbs structure and function of the growth plate. Current treatments of the abnormalities arising from growth plate arrest involve surgical correction once the deformities have manifested. To date, there is no biological based therapy for the repair of injured/damaged growth plate cartilage. Mesenchymal stem cells (MSC) are self renewable mulitpotential progenitor cells with the capacity to differentiate toward the chondrogenic lineage. Since their discovery, significant interest has been generated in the potential application of these cells for cartilage regeneration. In this study, the ability of autologous bone marrow mesenchymal stem cells to regenerate growth plate cartilage in a sheep model was examined. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1330837 / Thesis (Ph.D.) -- University of Adelaide, School of Paediatrics and Reproductive Health, 2008
754

In Vitro and In Vivo neuronal differentiation capacity of human adult bone marrow-derived mesenchymal stem cells

Khoo, Melissa Li Meng, Clinical School - St Vincent's Hospital, Faculty of Medicine, UNSW January 2009 (has links)
Discovery of the ability of mesenchymal stem cells (MSCs) to differentiate into cells of non-mesodermal tissues, particularly neuronal cells, have raised the possibility of utilising MSCs in regenerative/reparative therapies for neurological disorders. However, a number of hurdles remain to be resolved. This thesis aims to address some of these issues by investigating the characteristics of bone marrow-derived human MSCs (hMSCs) during long-term culture, the potential of hMSCs to differentiate in vitro toward the neuronal lineage under the influence of cytokines, and the effects of intracerebral transplantation in the hemiparkinsonian rat model. During expansion culture hMSCs were found to display the expected characteristics of MSC populations, and also constitutively expressed neural and pluripotency markers simultaneously with mesodermal markers. Analysis of hMSC long-term subcultivation revealed an optimal period for commencing neuronal differentiation (first 6-8 passages), and also showed the absence of spontaneous neural differentiation. Application of neural-inducing cytokines and culture conditions resulted in the generation of an immature neuronal-like phenotype by hMSCs. Through live cell microscopy it was demonstrated for the first time that cytokine-based hMSC neuronal differentiation occurs through active and dynamic cellular processes involving outgrowth and motility of cellular extensions. In addition, single- and multiple-stage cytokine-based strategies for inducing dopaminergic neuronal-like cells from hMSCs were investigated. These studies revealed that FGF-2 and EGF exerted the greatest benefits for hMSC neuronal differentiation. Undifferentiated and neuronal-primed hMSCs were transplanted intracerebrally into the striatum and substantia nigra of cyclosporine-treated hemiparkinsonian rats. Grafted hMSCs could be clearly identified at 1-day and 7-days post-transplantation; however, grafts were gradually lost over time, with complete absence by 21-days. Co-transplantation with olfactory ensheathing cells, neuronal-priming prior to grafting, and nigral as well as striatal grafting could not provide engraftment and differentiation advantages. Immunohistological analysis demonstrated the presence of innate inflammatory responses (microglia and astrocyte activation) at graft sites, fibronectin deposition by hMSCs, and lack of endogenous host neurogenesis. The results of my PhD work indicate that cytokine-based culture methods are capable of differentiating hMSCs to an immature neuronal-like phenotype, and host-mediated innate inflammatory responses may be a key contributing factor for the failure of in vivo hMSC engraftment.
755

In Vitro and In Vivo neuronal differentiation capacity of human adult bone marrow-derived mesenchymal stem cells

Khoo, Melissa Li Meng, Clinical School - St Vincent's Hospital, Faculty of Medicine, UNSW January 2009 (has links)
Discovery of the ability of mesenchymal stem cells (MSCs) to differentiate into cells of non-mesodermal tissues, particularly neuronal cells, have raised the possibility of utilising MSCs in regenerative/reparative therapies for neurological disorders. However, a number of hurdles remain to be resolved. This thesis aims to address some of these issues by investigating the characteristics of bone marrow-derived human MSCs (hMSCs) during long-term culture, the potential of hMSCs to differentiate in vitro toward the neuronal lineage under the influence of cytokines, and the effects of intracerebral transplantation in the hemiparkinsonian rat model. During expansion culture hMSCs were found to display the expected characteristics of MSC populations, and also constitutively expressed neural and pluripotency markers simultaneously with mesodermal markers. Analysis of hMSC long-term subcultivation revealed an optimal period for commencing neuronal differentiation (first 6-8 passages), and also showed the absence of spontaneous neural differentiation. Application of neural-inducing cytokines and culture conditions resulted in the generation of an immature neuronal-like phenotype by hMSCs. Through live cell microscopy it was demonstrated for the first time that cytokine-based hMSC neuronal differentiation occurs through active and dynamic cellular processes involving outgrowth and motility of cellular extensions. In addition, single- and multiple-stage cytokine-based strategies for inducing dopaminergic neuronal-like cells from hMSCs were investigated. These studies revealed that FGF-2 and EGF exerted the greatest benefits for hMSC neuronal differentiation. Undifferentiated and neuronal-primed hMSCs were transplanted intracerebrally into the striatum and substantia nigra of cyclosporine-treated hemiparkinsonian rats. Grafted hMSCs could be clearly identified at 1-day and 7-days post-transplantation; however, grafts were gradually lost over time, with complete absence by 21-days. Co-transplantation with olfactory ensheathing cells, neuronal-priming prior to grafting, and nigral as well as striatal grafting could not provide engraftment and differentiation advantages. Immunohistological analysis demonstrated the presence of innate inflammatory responses (microglia and astrocyte activation) at graft sites, fibronectin deposition by hMSCs, and lack of endogenous host neurogenesis. The results of my PhD work indicate that cytokine-based culture methods are capable of differentiating hMSCs to an immature neuronal-like phenotype, and host-mediated innate inflammatory responses may be a key contributing factor for the failure of in vivo hMSC engraftment.
756

Bioinductive protein-based scaffolds for human mesenchymal stem cells differentiation /

Karageorgiou, Vassilis. January 2004 (has links)
Thesis (Ph. D.)--Tufts University, 2004. / Adviser: David L. Kaplan. Submitted to the Dept. of Chemical and Biological Engineering. Includes bibliographical references. Access restricted to members of the Tufts University community. Also available via the World Wide Web;
757

Stem cell markers in the posterior limbus and cornea

McGowan, Sara L. January 2007 (has links) (PDF)
Thesis (M.S.)--University of Alabama at Birmingham, 2007. / Title from first page of PDF file (viewed Feb. 15, 2008). Includes bibliographical references (p. 33-37).
758

Autologous bone marrow-derived mesenchymal stem cell transplantation as a therapy for neuronal ceroid lipofuscinosis

Sanders, Douglas N., January 2007 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2007. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Vita. "August 2007" Includes bibliographical references.
759

Bone marrow cell transplantation for therapeutic angiogenesis in ischemic myocardium from bench to bedside /

Tse, Hung-fat. January 2007 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2007. / Also available in print.
760

Intervertebral disc regeneration using mesenchymal stem cells a mouse model study /

Yang, Fan, January 2007 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2008. / Also available in print.

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