Particulate delivery systems and methods of use

A - Human Necessities – 61 – K

Patent

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Details

A61K 39/00 (2006.01) A61K 9/00 (2006.01) A61K 9/16 (2006.01) A61K 9/51 (2006.01) A61K 9/72 (2006.01)

Patent

CA 2335940

Compositions and methods are provided for the administration of particulates comprising at least one bioactive agent which, in selected embodiments, may comprise an immunoactive agent. In this respect, the invention provides for both topical and systemic delivery of the bioactive agent using, for example, the respiratory, gastrointestinal or urogenital tracts. The particulates may be in the form of dry powders or combined with a nonaqueous suspension medium to provide stabilized dispersions. In preferred embodiments, the disclosed compositions will be used in conjunction with inhalation devices such as metered dose inhalers, dry powder inhalers, atomizers or nebulizers for targeted delivery of the agent to mucosal surfaces.

L'invention concerne des compositions et des procédés d'administration de particules comprenant au moins un agent bioactif lequel, dans certains modes de réalisation, peut comprendre un agent immunoréactif. A ce titre, l'invention permet une administration à la fois locale et systémique de l'agent bioactif utilisant, par exemple, les voies respiratoires, gastro-intestinales ou urogénitales. Les particules peuvent se présenter sous la forme de poudres sèches ou être combinées à un milieu de suspension non aqueux pour produire des dispersions stabilisées. Dans les modes de réalisation préférés, les compositions décrites sont utilisées conjointement avec des dispositifs d'inhalation tels que des inhalateurs à doses mesurées, des inhalateurs de poudre sèche, des atomiseurs ou des nébuliseurs permettant l'administration ciblée de l'agent sur les muqueuses.

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