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<dc:title xml:lang="en">Development of hydrogels for biomedical applications</dc:title>
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<dc:subject xml:lang="fr">Nanocomposites</dc:subject>
<dc:subject xml:lang="fr">Gélification in situ</dc:subject>
<dc:subject xml:lang="fr">Chirurgie mini-invasive</dc:subject>
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<dcterms:abstract xml:lang="fr">Le travail de recherche présenté dans cette thèse se concentre sur le développement et la caractérisation d'hydrogels aux propriétés adaptées à différentes applications biomédicales. En particulier, un matériau injectable à base de poly(amidoamine) qui subit sélectivement la transition sol-gel dans le tissu gastrique a été conçu et exploité pour minimiser l'invasion et faciliter la résection des tumeurs gastriques. En outre, un hydrogel à base d'acide hyaluronique contenant des nanoparticules de silice poreuse comme système de délivrance de biomolécules a été conçu. Sa capacité à induire la guérison stimulée des fistules gastro-intestinales a été testée in vivo. La possibilité de modifier l'hydrogel développé par l'introduction de bio-stimuli dans le but d'induire la croissance et éventuellement la différenciation cellulaire dans la matrice est également discutée. Enfin, la préparation d'un hydrogel à base de PEG contenant des nanoparticules de silicium poreux et conçu pour soutenir la libération prolongée d'une protéine est discutée en relation avec son application comme support pour la régénération des nerfs périphériques.</dcterms:abstract>
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