Academic literature on the topic 'Transplantation de cellules fétales'
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Journal articles on the topic "Transplantation de cellules fétales"
Marais, Ophélie. "Transplantation de cellules souches et infection VIH." Option/Bio 20, no. 420 (June 2009): 9. http://dx.doi.org/10.1016/s0992-5945(09)70165-5.
Full textSchlatt, S. "Transplantation des cellules germinales: Mythe ou réalité?" Andrologie 10, no. 3 (September 2000): 292–93. http://dx.doi.org/10.1007/bf03034752.
Full textYe, Fan, Séverine Lecourt, Amélia Vernochet, and Antoine Durrbach. "Utilisation des Cellules Souches Mésenchymateuses en transplantation d’organe." Bulletin de l'Académie Nationale de Médecine 199, no. 4-5 (April 2015): 515–23. http://dx.doi.org/10.1016/s0001-4079(19)30924-0.
Full textPolentes, J., and P. Gauthier. "Transplantation de cellules gliales olfactives après traumatisme médullaire." Neurochirurgie 51, no. 5 (November 2005): 421–34. http://dx.doi.org/10.1016/s0028-3770(05)83501-5.
Full textPolentes, J., and P. Gauthier. "Transplantation de cellules gliales olfactives après traumatisme médullaire." Neurochirurgie 51, no. 6 (December 2005): 563–76. http://dx.doi.org/10.1016/s0028-3770(05)83631-8.
Full textMarais, Ophélie. "Transplantation de cellules souches périphériques chez les drépanocytaires." Option/Bio 21, no. 431 (February 2010): 6. http://dx.doi.org/10.1016/s0992-5945(10)70365-2.
Full textDreyfus, JC. "Transplantation de cellules souches in utero chez le mouton." médecine/sciences 2, no. 10 (1986): 582. http://dx.doi.org/10.4267/10608/3430.
Full textPeschanski, M. "Analgésie au long cours par transplantation subarachnoïdienne de cellules chromaffines." médecine/sciences 8, no. 2 (1992): 153. http://dx.doi.org/10.4267/10608/3088.
Full textGoureau, Olivier, and Gaël Orieux. "Nouvelle approche thérapeutique pour les rétinites pigmentaires." médecine/sciences 36, no. 6-7 (June 2020): 600–606. http://dx.doi.org/10.1051/medsci/2020097.
Full textDubois-Laforgue, Danièle. "GRAGIL, résultats de la transplantation de cellules d’îlots à 5 ans." Médecine des Maladies Métaboliques 10, no. 3 (June 2016): 85–86. http://dx.doi.org/10.1016/s1957-2557(16)30110-9.
Full textDissertations / Theses on the topic "Transplantation de cellules fétales"
Cattan, Pierre. "Apoptose et transplantation des cellules ß." Paris 11, 2003. http://www.theses.fr/2003PA11T013.
Full textGhazal, Khaldoun. "Le rôle des cellules T régulatrices en transplantation hépatique." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066225/document.
Full textThe results of liver transplantation (LT) have improved significantly, but long-term graft survival is still a major concern for doctors. It depends on the rejection rates, the recurrence of hepatitis C, and the immunosuppressive treatment and its complications. After LT, the graft reinfection with HCV is constant, and the evolution of chronic hepatitis is faster and more aggressive when compared to the time course before transplantation. It has been suggested the regulatory T cells (Treg) are involved in the induction of tolerance after organ transplantation, and in the persistence of HCV infection by suppressing the HCV-specific T responses. Furthermore, the number and function of Treg are very likely influenced by the immunosuppressive therapy used after transplantation. In this context, my work focuses on the role of Treg cells in the evolution of liver transplantation, and the effects of different treatments used after LT (immunosuppressive and anti-HCV) on this population. The results of my thesis show that the Treg cells (Type-1 regulatory cells, Tr1, in particular) are predictive of the response to the anti-HCV treatment after LT, and that Treg cells are associated with severe evolution of recurrent hepatitis C. I show that mTOR inhibitors have a positive impact on the number of circulating Treg cells in patients who underwent a conversion of therapy from Tacrolimus to a mTOR inhibitor, and that calcinurine inhibitors have different effects on Treg suppressive activity in vitro. In conclusion, we bring evidences on the involvement of Treg cells in HCV recurrence and treatment failure after liver transplantation and in their interaction with immunosuppressive drugs
Dimicoli-Salazar, Sophie. "Conversion myogénique striée de cellules humaines non musculaires." Paris 7, 2010. http://www.theses.fr/2010PA077057.
Full textTreatments for patients suffering from myopathies and cardiovascular diseases are not always very efficient. Therefore, injection in the diseased organs of some of their healthy precursors has been tested as possible replacement sources, with no significant improvement. Therefore, with all the enthusiasm linked to the stem cell plasticity phenomenon, the therapeutic efficiency of numerous other cell types has been experimentally tested, with modest myogenic conversion. Several teams have experimentally tested the efficacy of reprogrammed non myogenic cells by using factors which have a key role in muscle regulation. For skeletal muscle, Myf5 is a master gene. For heart myogenesis, Nkx2. 5, Gata4 and Tbx5 are important. In our work, we followed this strategy. In the skeletal muscle case, we used Myf5 to reprogram several primary human cells. Except for the haematopoietic stem cells (HSC), we observed promising results with skin fibroblasts, mesenchymal stem cells (MSC), human umbilical vein endothelial cells (HUVEC), endothelial progenitors from umbilical cord blood. In thé heart muscle case, we co-transduce cells with Nkx2,5 and Gata4. We observe no change for HSC. Mesenchymal stem cells, HUVEC and satellite cells could only initiate cardiac transcriptional program. The combination of the three transgenes Nkx2. 5, Gata4 and Tbx5 in satellite cells could improve significantly the cardiac program activation. This work allows us to evaluate the myogenic potential of several reprogrammed primary human cells expressing particular transgenes. It opens discussion on the cell replacement therapy area and may give new informations on the transdifferenciation phenomenon
Rabesandratana, Oriane. "Les cellules ganglionnaires rétiniennes dérivées de cellules souches pluripotentes humaines : de la caractérisation à la transplantation." Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS322.
Full textAmong the different treatments for optic neuropathies, cell therapy using transplantation of retinal ganglion cells (RGCs) derived from human induced pluripotent stem cells (hiPSC) is one of the most promising strategy. In this project, we validated the optimized production of RGCs from retinal organoids derived from four different hiPSC lines. Our methodology included a double selection process, comprising the culture of retinal dissociated cell in adherent conditions and a magnetic sorting protocol, based on the expression of surface antigen CD90/THY1. We identified enriched RGCs resulting from this double protocol, according morphological, molecular and functional properties. These results were validated for all four hiPSC lines, including a ubiquitous fluorescent reporter cell line, using Crispr/Cas9 strategy. Intravitreal injection of reporter hiPSC line-derived RGCs into an optic nerve crush mouse model led to a partial integration of surviving cells into the host retina establishing the possibility to performed RGC transplantation. This work will be continued in order to explore the capacity of hiPSC-derived RGCs to reconnect with both retinal partners and with the different targets in the brain
Le, Grand Fabien. "Les cellules embryonnaires : des outils pour la reconstruction musculaire squelettique." Nantes, 2004. http://www.theses.fr/2004NANT2059.
Full textWe studied the myogenic potential of different types of mouse embryonic cells. In vitro myogenic commitment of dermomyotomal cells is modified when they are co-cultivated with osteogenic or neural cells from their microenvironment. The combination of these environmental cells is needed for successful development of dermomyotomal cells into adult transplanted muscle. Endothelial progenitor cells within embryonic skeletal muscles purified by magnetic-bead selection on the basis of CD34 expression, are able to differentiate into endothelial cells and skeletal myofibers in in vitro culture. When transplanted into an adult mdx mouse muscle, CD34+ cells display a high propensity to disperse within the recipient muscle, fuse with host fibers, restoring dystrophin expression
Lemoine, Roxane. "Propriétés régulatrices des cellules dendritiques humaines traitées par l’acide mycophénolique." Thesis, Tours, 2009. http://www.theses.fr/2009TOUR3138/document.
Full textIn organ transplantation, host immune response against donor still remains a major cause of graft loss. A better control of allogeneic response through the induction of specific tolerance is a major goal in human transplantation. In this work, we explored the effects of mycophenolic acid (MPA, an immunosuppressive drug currently used in transplantation) on dendritic cell (DC) functions. We demonstrated that MPA inhibits DC ability to induce allogeneic cytotoxic CD8+ T cells through inhibition of interferon gamma synthesis in DC. Moreover, mycophenolic acid-treated dendritic cells (MPA-DC) are able to induce antigen-specific regulatory CD4+ T lymphocytes (iTreg) which can convert fully mature DC into tolerogenic DC. These iTreg decrease the expression of proteins associated with cytotoxic function (perforin and granzymes A and B), reduce IFN-γ production by CD8+ T cells and inhibit their cytotoxic function in response to allogeneic stimulation. These results taken together suggest that human MPA-DC could be use in cellular therapy in order to promote allograft tolerance
Andrieu-Vidal, Isabelle. "Etude des phénomènes impliqués en regénération hépathique, en vue de favoriser l'implantation en transplantation d'hépatocytes." Besançon, 2008. http://www.theses.fr/2008BESA2074.
Full textHepatocyte transplantation could become an interesting alternative to liver transplantation. In order to improve the understanding of the mechanisms involved in hepatocyte transplantation, we first elaborated different Nude mouse models of acute liver deficiency, by partial hepatectomy, D-galactosamine or thioacetamide treatment or liver apoptosis induced by a mouse specific anti-Fas antibody: Jo2. Rat hepatocyte transplantation was performed into these different models, it resulted in an engrafment rate similar to non-treated Nude mouse, except in the model of Nude mouse challenged by repeated sublethal Jo2 injections. In the latter mouse model, rat hepatocyte implantation was 7-fold higher better than in others. Genomic analysis revealed mainly ago-regulation of cell cycle genes associated with down-regulation of circadian genes known to be proliferative ones. This was interpreted as a Nude mouse cell cycle blockage, whereas rat hepatocytes could proliferate. This could correspond to a selective advantage model. In Nude mouse challenged by repeated sublethal Jo2 injections, transplantation of human hepatocytes resulted in a very low and inconsistant engrafment. Nevertheless, when posology ofJo2 infections was increased to perform repeated lethal liver deficiency challenges, human hepatocyte transplantation could improve survival rate. Surprisingly, genomic analysis revealed that there were no markers of selective advantage, but, on the contrary, there was ago-regulation of proliferation early genes and circadian genes, and absence of cell cycle blocker genes. Human hepatocyte transplantation acted as if it modified Nude mouse liver response to Jo2, which could explain improvement of survival. Absence of selective advantage and differences of self-species chronology could explain, at least partly, the failure of human hepatocyte engraftment. In conclusion, a successful engrafment of transplanted hepatocytes requires an environment in favour of interactions between transplated hepatocytes and host liver
Bouilland, Caroline. "Agression et réparation endothéliales en transplantation." Rouen, 2009. http://www.theses.fr/2009ROUENR06.
Full textChronic graft dysfunction-induced transplant arteriosclerosis is considered to constitute the main cause of mortality in cardiac transplantation. The TA protes is considered to be initiated by an immune and inflammatory attack of donor endothelial tell. In the present work, we show that early endothelial recovery may lirait intimai prolifération development in aortic allograft rat model. This reendothélialisation was induced by fucan, which mobilize bone marrow-derived progenitors tells and by autologous mononuclear bone marrow tell direct transfer. Systemic endothelial dysfunction, which mainly contributes to the pathophysiology of cardiovascular diseases, is currently observed alter organ transplantation. Immunosuppressive therapies based on cyclosporine (CsA), a CNI agent, are probably a major factor causing vascular damage. The second part of this work demonstrates that MMF prevents the alteration in endothelial function and the enhanced sensitivity to vasoconstrictors related to CsA administration in a rat allograft aortic model through the restoration of NO availability
Taflin, Cécile. "Rôle de la cellule endothéliale dans la réponse immune en transplantation d'organe." Paris 7, 2011. http://www.theses.fr/2011PA077088.
Full textEndothelial cells play a key role in the context of organ transplantation due to their localization within capillaries of the transplanted organ permitting direct contact with both antibodies of the graft recipient and with immune cells of the receiver potentially directed against the donor transplant. Endothelial cells have been extensively documented as a target of the key actors of humoral graft rejection, HLA class I and class II anti-donor antibodies. In addition they induce activation of alloreactive CD4⁺ and CD8⁺ T lymphocytes. Such allo-activation can lead to T cell proliferation, IFN-γ and IL-2 secretion ultimately resulting in acute cellular mediated graft rejection. This study examined the mechanisms of allo-activation of CD4+ T cells by human endothelial cells and determined whether such activation was modified in the presence of HLA class II allo-antibodies. We have developed a model of allo-reaction between human dermal microvascular endothelial cells and CD4⁺ T lymphocytes. This model allowed us to demonstrate that HLA class II expressing microvascular endothelial cells induce expansion of both Th17 (T CD4⁺IL-17⁺) and Treg (T CD4⁺CD45RA⁻FoxP3bright) populations. Amplification of Treg was secondary to their proliferation and dependent on the expression of ICAM-1 on the endothelial cell whereas amplification of Th17 was IL-6/STAT-3 dependent and associated with memory CD4⁺ T cell proliferation. Pre-activation of endothelial cells with an anti-HLA class II antibody led to increased memory T CD4⁺ proliferation and Thl7 expansion while decreasing endothelial cell mediated expansion of the Treg population. These data lead to the proposal that endothelial cells within the graft actively participate in the local regulation of the CD4⁺ T cell allogeneic response either by inducing a fully functional Treg population or a pro-inflammatory Thl7 population depending upon the presence of pro-inflammatory cytokines (eg IL-6) and/or the presence of circulating HLA class II allo-antibodies
Parouchev, Alexandre. "Immortalisation et transplantation de cellules hépatiques simiennes : modèles de thérapie cellulaire hépatique." Paris 7, 2010. http://www.theses.fr/2010PA077099.
Full textOrthotopic liver transplantation is the only available cure for certain metabolic deficiencies. But, lack of donors and complications related to immunosuppression urge the development of alternatives therapies such as hepatocyte transplantation. However, trials with adult hepatocytes have been so far disappointing. We have explored two directions. As a model for an alternative source of hépatocytes, we have characterized a line of simian fetal hepatic cells (IPFLS), immortalized by SV40-T antigen. In vitro these cells conserve their proliferative capacity and their hepatic bipotent progenitor phenotype. The immortalization is reversible after Cre-mediated excision of the oncogene. In vivo, they are non tumorigenic and differentiate into hepatocytes, with no in situ proliferation. However, the important karyotype instability underlines the need for new immortali2ation strategies. Moreover, ex vivo gene therapy is considered as an alternative to hepatocyte allotransplantation. We have set up conditions for efficient transduction of freshly-isolated and cryopreserved, adult, simian hepatocytes in suspension by HIV-1-derived recombinant lentiviruses, expressing GFP under transcriptional control of the hepatospecific promoter of the human apolipoprotein A-II gene. The in vivo persistence and fonction of cryopreserved cells is demonstrated by the presence of transduced hepatocytes three months after transplantation into the liver of immunodeficient mice. Thus the nonhuman primate appears as a good preclinical model for the development of liver-directed ex vivo gene therapy strategies
Books on the topic "Transplantation de cellules fétales"
Paulette, Mehta, ed. Pediatric stem cell transplantation. Sudbury, Mass: Jones and Bartlett, 2003.
Find full textRobert, Sackstein, Janssen William Earl, Elfenbein Gerald J, and New York Academy of Sciences., eds. Bone marrow transplantation: Foundations for the 21st century. New York, N.Y: New York Academy of Sciences, 1995.
Find full text(Editor), William Earl Janssen, Robert Sackstein (Editor), New York Academy of Sciences (Corporate Author), and Gerald J. Elfenbein (Editor), eds. Bone Marrow Transplantation: Foundations for the 21st Century (Annals of the New York Academy of Sciences). New York Academy of Sciences, 1996.
Find full textNew York Academy of Sciences (Corporate Author), Robert Sackstein (Editor), William Earl Janssen (Editor), and Gerald J. Elfenbein (Editor), eds. Bone Marrow Transplantation: Foundations for the 21st Century (Annals of the New York Academy of Sciences (Paper), Vol 770). New York Academy of Sciences, 1995.
Find full text1955-, Haas R., Kronenwett R. 1966-, and Sczakiel G. 1956-, eds. Advances in hematopoietic stem cell transplantation and molecular therapy. Berlin: Springer, 1998.
Find full textMULLER-SIEBURG, CHRISTA ED. Hematopoietic Stem Cells: ANIMAL MODELS AND HUMAN TRANSPLANTATION (Current Topics in Microbiology & Immunology). Springer, 1992.
Find full text(Editor), R. Haas, R. Kronenwett (Editor), and G. Sczakiel (Editor), eds. Advances in Hematopoietic Stem Cell Transplantation and Molecular Therapy: Proceedings of the Symposium "Hematopoietic Steam Cell Transplantation and Gene Therapy (Recent Results in Cancer Research). Springer-Verlag Telos, 1998.
Find full textM, Kühtreiber Willem, Lanza R. P. 1956-, and Chick William L. 1938-, eds. Cell encapsulation technology and therapeutics. Boston: Birkhauser, 1999.
Find full textConference papers on the topic "Transplantation de cellules fétales"
Le Choismier, H. "Un transporteur d’oxygène universel d’origine marine au service de la santé." In 66ème Congrès de la SFCO. Les Ulis, France: EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206601009.
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