Use of protein conformation for the protection and release...

C - Chemistry – Metallurgy – 08 – G

Patent

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C08G 69/10 (2006.01) A61K 9/20 (2006.01)

Patent

CA 2367042

Disclosed are methods of combining chemical compounds with synthetic amino acid polymers for protection from degradation and to provide for controlled release of the compounds. A method is described for the selective release of drug substances from a synthetic amino acid polymer in the stomach or small intestine, utilizing pH-dependent changes in higher order structure. A pharmaceutical composition comprising a drug substance that has been combined with an amino acid polymer and a pharmaceutically acceptable combination of excipients is disclosed.

L'invention concerne des procédés utilisés pour combiner des composés chimiques avec des polymères d'acides aminés synthétiques conçus pour lutter contre la dégradation et assurer la libération contrôlée des composés. L'invention porte également sur un procédé de libération sélective de substances médicamenteuses à partir d'un polymère synthétique d'acides aminés dans l'estomac ou l'intestin grêle, qui utilise des changements dépendant du pH dans une structure d'ordre supérieure. L'invention concerne, en outre, une composition pharmaceutique contenant une substance médicamenteuse qui a été combinée avec un polymère d'acides aminés et une composition d'excipients pharmaceutiquement acceptable.

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