References of "Renard, Ariane"
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See detailFixation de ferritine cationisee a la surface des cretes palatines du rat.
Renard, Ariane ULg; Heinen, Ernst ULg; Baeckeland, E.

in Bulletin de l'Association des Anatomistes (1982), 66(192), 117-25

Recently, we suggested that the cell coat of the surface epithelial cells of the palatal shelves and especially its sialyl groups are implied in the adhesion process which initiates the constitution of ... [more ▼]

Recently, we suggested that the cell coat of the surface epithelial cells of the palatal shelves and especially its sialyl groups are implied in the adhesion process which initiates the constitution of the secondary palate. In this work, use of cationized ferritin which interacts with anionic receptors of the plasma membrane give us the possibility to render these sialic acids visible. After five minutes incubation in presence of cationized ferritin, the labeling particles are distributed in monolayer over the plasmalemma of epithelial cells. Subsequent incubation in cationized ferritin free medium results in clustering of the marker followed by the detachment of the labeled patches. Otherwise, incubation in the presence of neuraminidase from Clostridium perfringens before the polycationic ligand contact prevents labeling. We think that lateral migration modifications of the anionic receptor could be associated with changes of the shelves capacity to adhere. [less ▲]

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See detailEtude ultrastructurale des effets de la neuraminidase sur des processus palatins de rat
Renard, Ariane ULg; Heinen, Ernst ULg; Baeckeland, E.

in Bulletin de l'Association des Anatomistes (1981), 65(190), 329-39

In a previous work, we demonstrated that palatine processes treated with 10 micrograms/ml neuraminidase for 30 minutes at 37 degrees C show a delayed fusion in vitro. In order to investigate the effects ... [more ▼]

In a previous work, we demonstrated that palatine processes treated with 10 micrograms/ml neuraminidase for 30 minutes at 37 degrees C show a delayed fusion in vitro. In order to investigate the effects of neuraminidase, the treated palatine processes were observed with the aid of transmission and scanning electron microscopy. The effect of neuraminidase is exclusively detectable on superficial flat cells of the palatine processes, especially the cells of the medial edge of the process. The epithelial basal cells remain unchanged. Observed with the S.E.M., the superficial epithelial cells show bubbles, become spherical and detached. To explain these observations, we namely propose the following hypothesis: the action of neuraminidase prevents the fusion of the palatine processes because it denudes basal cells bearing a too immature cell coat for ensuring sufficient adherence between the palatine processes. [less ▲]

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See detailEtude de la relation entre la structure chimique et l'activite antimitotique d'une serie nouvelle d'arylthioethers pyrimidiniques.
Jamoulle, J. C.; Lapiere, C. L.; Bassleer, R. et al

in Annales Pharmaceutiques Françaises (1980), 38(3), 267-70

Detailed reference viewed: 35 (0 ULg)