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Academic literature on the topic 'Molécules d'adhésion cellulaire'
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Journal articles on the topic "Molécules d'adhésion cellulaire"
"Les molécules d'adhésion cellulaire." Revue Française des Laboratoires 1999, no. 310 (February 1999): 100. http://dx.doi.org/10.1016/s0338-9898(99)80384-9.
Full textDissertations / Theses on the topic "Molécules d'adhésion cellulaire"
Velasco, Brigitte. "Les molécules d'adhésion cellulaire en dermatologie/ par Brigitte Velasco." Montpellier 1, 1990. http://www.theses.fr/1990MON11115.
Full textDaniel, Laurent. "Rôle des molécules d'adhésion et des glycoconjugués dans le processus cancéreux." Aix-Marseille 2, 2001. http://theses.univ-amu.fr.lama.univ-amu.fr/2001AIX20685.pdf.
Full textDemais, Valérie. "Mécanismes d'adhésion et de différenciation des cellules osseuses au contact de biomatériaux métalliques." Angers, 2002. http://www.theses.fr/2002ANGE0511.
Full textSoon after implantation, two phenomena took place close to implant: adhesion proteins adsorption and release of metal ions by corrosion process. Cell adhesion on titanium implants was influenced by adsorption of proteins and mediated by integrins. Cell adhesion was modulated by the considered protein. Variations in cytoskeleton organization and in intracellular pathways modulations were observed. The effect of metal ions release was evaluated on osteoclasts and osteoblasts in primary cultures. Metal ions influenced cells viability, morphology and functional characteristics. In osteoblasts, they modulated mineralization process and genes expression. In osteoclast, they influenced cell morphology and resorption area. Soon after implantation, cells reactions were influenced by adhesion proteins adsorption and release of metal ions. It seems important to consider these parameters for new metallic biomaterials conception
Malaud, Éric. "Étude structurale et fonctionnelle de deux molécules d'adhésion (CD62P et CD36) dans l'initiation et le développement des lésions athéromateuses." Lyon 1, 2001. http://www.theses.fr/2001LYO1T061.
Full textHoussin, Élise. "Implication de la protéine Girdin dans la régulation des jonctions d'adhérence et de la polarité épithéliale chez Drosophila melanogaster." Doctoral thesis, Université Laval, 2016. http://hdl.handle.net/20.500.11794/26590.
Full textThe human Girdin protein is overexpressed in various cancers, and promotes cell migration and invasion. This suggests that Girdin contributes to tumor progression. Recently, it was shown that Girdin directly interacts with Par-3. This interaction is essential for cell polarization associated with directed cell migration. Par-3 and its Drosophila ortholog Bazooka are also known for their role in the establishment and maintenance of epithelial cell polarity and adherens junction (AJ) formation. Epithelial polarity, which is characterized by the asymmetric distribution of many cellular constituents, is necessary for epithelial tissue function and homeostasis. Indeed, loss of several epithelial polarity regulators leads to epithelial to mesenchymal transition. We thus hypothesized that Girdin plays a role in epithelial polarity and/or cell-cell adhesion, as reported for its binding partner Par-3. In order to test this premise in vivo, we generated null alleles of Girdin, which encodes the Drosophila ortholog of Girdin, and established specific anti-Girdin antibodies. First, we demonstrated that Girdin is mainly expressed during embryogenesis. In embryonic epithelial cells, it is predominantly associated with the plasma membrane and enriched at AJ. Girdin mutant embryos present several morphogenetic defects including the formation of ectopic epithelial cell cysts and opening of the ventral midline, suggesting that loss of Girdin weakens cell-cell adhesion. Consistent with this phenotype, the association between AJ components, including Armadillo (β-catenin) and DE-Cadherin (DE-Cad), and the cytoskeleton decreases in Girdin mutant animals. These results suggest that Girdin participates in AJ stability. We then investigated the implication of Girdin in epithelial polarity. Although we could not observe any epithlelial polarity defects in Girdin mutants, we found strong genetic interactions between Girdin and three genes encoding polarity regulators : crb, yrt and lgl. Together, our data identifies Girdin as a novel regulator of epithelial cell polarity and cell-cell adhesion. These results thus reveal unsuspected roles for Girdin related proteins. Comprehensive analysis of Girdin function is essential to evaluate whether it is an appropriate target to treat cancer.
Thomas, Xavier. "Étude phénotypique et fonctionnelle des molécules d'adhésion cellulaire dans le myélome multiple et la leucémie aiguë myéloïde." Lyon 1, 1998. http://www.theses.fr/1998LYO1T007.
Full textBelaaoui-Aksas, Ghania. "Migration des progéniteurs hématopoïétiques à travers l'endothélium : étude du rôle des molécules d'adhésion de la famille des Nectines, des JAMs et des molécules CD99 et CD146." Aix-Marseille 2, 2005. http://www.theses.fr/2005AIX20665.
Full textNectins (CD111/CD112/CD155), JAMs (JAM-A/JAM-C), CD99 and CD146 are expressed on haematopoietic progenitors (HP) and on inter-endothelial junctions. We explored their implication in adhesion, trans-endothelial migration and "homing" of human HP in NOD/SCID mice. In vitro migration implies CD99 and JAM-A. Non-specific reactions in vivo did not make it possible to conclude to this role. Homografts models would allow such conclusions. Most studied molecules are implicated in monocytes migration. So, molecular mechanisms of HP migration should be different from those of leucocytes. We discuss the assumptions that result from this. CD111 and CD99 expression on the HP is variable. CD111 is slightly expressed on immature HP and increases in the erythroïd compartment since the CFU-E stage. Its blockade during erythropoïesis did not detect its role. A similar approach is underway to study CD99
Tremblay, Pierre-Luc. "Mécanismes d'extravasation des cellules cancéreuses suite à leur adhérence à la E-sélectine des cellules endothéliales." Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/24994/24994.pdf.
Full textThiry, Louise. "Rôle de DSCAM dans le développement du circuit locomoteur spinal." Doctoral thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/28365.
Full textLocomotion is controlled by spinal circuits that generate rhythm and coordinate left-right and flexor-extensor motoneuronal activities. The outputs of motoneurons and spinal interneuronal circuits are shaped by sensory feedback, relaying peripheral signals that are critical to the locomotor and postural control. Several studies in invertebrates and vertebrates have argued that the Down Syndrome Cell Adhesion Molecule (DSCAM) would play an important role in the normal development of neural circuits. Although there is evidence that DSCAM is expressed in the developing mouse spinal cord, and that its mutation induces postural and motor defects in adult mice, little is known about its functional contribution to the spinal circuits underlying locomotion. In this context, the work presented in this thesis aims at studying the implication of DSCAM in the establishment of the spinal locomotor circuit. For this purpose, we first sought to evaluate the neurological changes in the spinal locomotor circuit of neonatal and adult DSCAM mutant mice. We show that a systemic mutation of DSCAM (DSCAM2J) induces locomotor coordination defects associated with anatomical and neurophysiological changes in spinal interneuronal and sensorimotor circuits. We then investigated the functional contribution of DSCAM to locomotor gaits over a wide range of locomotor speeds using freely walking mice. We show that the DSCAM2J mutation impairs the ability of mice to run and modifies their locomotor repertoire, inducing the emergence of aberrant gaits for mice. Such changes suggest a reorganization of spinal and supraspinal neuronal circuits underlying locomotor control in DSCAM2J mutant mice. Finally, we used the Cre-Lox technology to genetically identify and characterize the neuronal populations underlying these functional changes. We show in this study that conditional mutations of DSCAM in either excitatory or inhibitory spinal interneurons induce an imbalance in excitatory-inhibitory signaling across the spinal midline that can impair the spinal locomotor circuit controlling either the bilateral coordination or the flexor/extensor coordination, respectively. Combining these studies with immunostaining experiments, we identified spinal interneuronal subpopulations implicated in either the bilateral or the flexor/extensor coordination during locomotion. Collectively, our functional, electrophysiological, and anatomical studies suggest that the mammalian DSCAM protein is involved in the normal development of the spinal locomotor circuit. In addition to characterizing the different implications of DSCAM in the development of this spinal circuit, this work shows how the use of conditional mutations of DSCAM in different neuronal subpopulations allows the study of the spinal locomotor circuit components.
Figarella-Branger, Dominique. "Les molécules d'adhésion de la superfamille immunoglobuline dans le muscle strié et les tumeurs neuroectodermiques chez l'homme." Aix-Marseille 2, 1992. http://www.theses.fr/1992AIX22002.
Full textBooks on the topic "Molécules d'adhésion cellulaire"
D, Pearson Jeremy, ed. Vascular adhesion molecules and inflammation. Basel: Birkhäuser, 1999.
Find full textD, Pearson Jeremy, ed. Vascular adhesion molecules and inflammation. Basel: Birkhäuser, 1999.
Find full textD, ED DUNON. Adhesion In Leukocyte Homing And Differentiation (Current Topics in Microbiology & Immunology). Springer, 1993.
Find full textAdhesion in Leukocyte Homing and Differentiation (Current Topics in Microbiology and Immunology). Springer, 1993.
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