Biodegradable peptide sustained release compositions...

A - Human Necessities – 61 – K

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A61K 9/16 (2006.01) A61K 38/08 (2006.01) A61K 47/00 (2006.01)

Patent

CA 2605000

Sustained delivery compositions that modulate the release of incorporated prophylactic, therapeutic, and/or diagnostic agents, and methods of preparation and use thereof, are disclosed. In particular embodiments, the compositions include a polymeric matrix; a prophylactic, therapeutic, and/or diagnostic agent dispersed and/or dissolved within the polymeric matrix; and a carbohydrate component that is separately dispersed within the polymeric matrix. The carbohydrate component modulates the release of the incorporated agent from the polymeric matrix. The compositions can be prepared by dissolving a biocompatible polymer in a solvent to form a polymer solution, and separately dispersing a carbohydrate and a prophylactic, therapeutic, and/or diagnostic agent within the polymer solution. The polymer solution is then solidified to form a polymeric matrix, wherein a significant amount of the carbohydrates is dispersed in the polymeric matrix separately from the incorporated agent. In particular embodiments, the compositions include a polymeric matrix and a B1 peptide antagonist dispersed within the polymeric matrix.

L'invention porte sur des compositions à libération prolongée qui modulent la libération d'agents prophylactiques, thérapeutiques et/ou diagnostiques incorporés, et sur leurs procédés de préparation et d'utilisation. Selon des formes d'exécution préférées, les compositions comprennent une matrice polymère ; un agent prophylactique, thérapeutique et/ou diagnostique dispersé et/ou dissous dans la matrice polymère ; et un composant de glucide qui est dispersé séparément dans la matrice polymère. Le composant de glucide module la libération de l'agent incorporé de la matrice polymère. Pour préparer les compositions, on dissout un polymère biocompatible dans un solvant de façon à obtenir une solution polymère et on disperse séparément un glucide et un agent prophylactique, thérapeutique et/ou diagnostique dans la solution polymère. On solidifie ensuite la solution polymère pour former une matrice polymère, une quantité considérable des glucides étant dispersée dans la matrice polymère séparément de l'agent incorporé. Selon d'autres formes d'exécution, les compositions comprennent une matrice polymère et un antagoniste peptidique B1 dispersé dans la matrice polymère.

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