Use of hydrolytic and oxidative enzymes to dissolve biofilm...

A - Human Necessities – 61 – K

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A61K 38/47 (2006.01) A61K 31/573 (2006.01) A61K 38/46 (2006.01) A61P 27/16 (2006.01) A61P 29/00 (2006.01) A61P 31/04 (2006.01)

Patent

CA 2670899

A composition for removal of biofilm in the ears is useful for the treatment of ear infections such as otitis media, particularly those infections caused by Pseudomonas aeruginosa. In general, the composition comprises: (1) a quantity of at least one enzyme that catalyzes the hydrolysis of a bond that connects two monosaccharides in a polysaccharide or that connects a monosaccharide with a protein molecule in a glycoprotein sufficient to break down biofilm in the ear; and (2) a pharmaceutically acceptable carrier suitable for administration into the ear canal. The composition can further include ingredients such as a steroid, lysozyme, lactoferrin, or a peroxidase; if a peroxidase is included, the composition can further include an oxidase to generate peroxide as well as a substrate for the oxidase. The composition can be used in methods for treatment of an ear infection based on the ability of the composition to dissolve biofilm in the ear.

L'invention concerne une composition pour l'élimination d'un biofilm dans les oreilles utile pour le traitement d'infections des oreilles telles que l'otite moyenne, en particulier des infections provoquées par Pseudomonas aeruginosa. En général, la composition comprend : (1) une quantité d'au moins une enzyme qui catalyse l'hydrolyse d'une liaison qui relie deux monosaccharides dans un polysaccharide ou qui relie un monosaccharide à une molécule de protéine dans une glycoprotéine suffisante pour dissocier le biofilm dans l'oreille ; et (2) un support pharmaceutiquement acceptable approprié pour une administration dans le canal de l'oreille. La composition peut comprendre en outre des ingrédients tels qu'un stéroïde, un lysozyme, de la lactoferrine ou une peroxydase ; si une peroxydase est incluse, la composition peut comprendre une oxydase pour générer un peroxyde ainsi qu'un substrat pour l'oxydase. La composition peut être utilisée dans des procédés de traitement d'une infection de l'oreille basés sur la capacité de la composition à dissoudre un biofilm dans l'oreille.

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