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<dc:title xml:lang="en">Injectable hydrogels for innovative clinical applications</dc:title>
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<dc:subject xml:lang="fr">Hydrogels</dc:subject>
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<dc:subject xml:lang="en">Poly(amidoamine)s</dc:subject>
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<dcterms:abstract xml:lang="fr">Cette thèse porte sur la conception d'hydrogels injectables pouvant être utilisés en chirurgie mini-invasive, par exemple en dissection endoscopique sous-muqueuse (ESD) ou en réparation de hernie.Les polyamidoamines (PAAm) constituent une classe d'hydrogel intéressante à ces fins. Après avoir étudié les différents facteurs qui affectent leurs propriétés, nous montrons qu'il est également possible d'obtenir des microgels à base de PAAm pour la délivrance de médicaments ou l'encapsulation de cellules. Il est possible de synthétiser des PAAm dégradables qui peuvent être injectés dans la sous-muqueuse de l'estomac pour la ESD.Nous avons montré que les hydrogels hybrides alginate / PAAm peuvent être utilisés pour le traitement percutané de la hernie inguinale directe et des crèmes à base d'hydrogel ont été préparées pour être utilisées pour le colmatage des fistules. Le dernier chapitre de la thèse est consacré à la réticulation de l'acide hyaluronique pour la chirurgie esthétique.</dcterms:abstract>
<dcterms:abstract xml:lang="en">This thesis deals with the design of injectable hydrogels that can be used in minimally invasive surgery, such as endoscopic submucosal dissection (ESD), percutaneous hernia repair or fistulas closure.Polyamidoamines (PAAm) constitute a class of hydrogel of special interest for these purposes. After studying the different factors that affect their properties, we show that it is also possible to obtain PAAM-based microgels for applications in drug delivery or cell encapsulation.It is possible to synthesize redox-responsive nanocomposite degradable PAAm that can be injected into the submucosa of the stomach to facilitate the ESD.We show that hybrid alginate/PAAm hydrogels can be used for the percutaneous treatment of direct inguinal hernia and hydrogel-based creams have been prepared for use in fistulas closure. The last chapter of the thesis is devoted to the development of a new crosslinking strategy for hyaluronic acid in cosmetic surgery.</dcterms:abstract>
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