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<dc:title xml:lang="fr">Réhabilitation laryngée par allogreffe aortique : des matériaux synthétiques vers le biologique</dc:title>
<dcterms:alternative xml:lang="en">Laryngeal rehabilitation by aortic allograft</dcterms:alternative>
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<dc:subject xml:lang="fr">Matrice tridimensionnelle</dc:subject>
<dc:subject xml:lang="fr">Laryngectomie totale</dc:subject>
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<dcterms:abstract xml:lang="fr">Introduction Douze mille laryngectomies totales sont réalisées en Europe chaque année pour des cancers laryngés avancés. Matériel et Méthode Nous avons souhaité franchir un nouveau palier en utilisant des matériaux biologiques pour la reconstruction trachéale, préambule indispensable à la reconstruction du larynx artificiel. Résultats Une première étude in vitro et in vivo chez la brebis a consisté à utiliser une allogreffe aortique, préalablement lyophilisée pour accélérer la régénération tissulaire. Simultanément, nous avons développé un bioréacteur spécifique afin de pré-conditionner in vitro le greffon aortique par cellularisation chondrocytaire pour accélérer sa transformation en trachée lors de l’implantation. En parallèle, une seconde stratégie très prometteuse et innovante utilisant des matériaux tubulaires composés d’albumine comme substituts aux aortes a été testée avec succès in vitro et in vivo. Conclusion Ces études d’ingénierie trachéo-laryngée ont permis d’aboutir à la première application clinique d’allogreffe aortique au niveau laryngé.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Introduction Twelve thousand total laryngectomies are performed in Europe each year for advanced laryngeal cancer. Material and Method We wanted to take a step forward by using biological materials for tracheal reconstruction, an essential preamble to the reconstruction of the artificial larynx. Results A first in vitro and in vivo study in sheep consisted in using an aortic allograft, previously freeze-dried to accelerate tissue regeneration. Simultaneously, we developed a specific bioreactor to precondition the aortic graft in vitro by chondrocyte cellularization to accelerate its transformation into a trachea during implantation. In parallel, a second very promising and innovative strategy using tubular materials composed of albumin as aorta substitutes has been successfully tested in vitro and in vivo. Conclusion These tracheolaryngeal engineering studies have led to the first clinical application of aortic allograft at the laryngeal level.</dcterms:abstract>
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