Composition for sustained release injections and production...

A - Human Necessities – 61 – K

Patent

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Details

A61K 38/21 (2006.01) A61K 9/14 (2006.01) A61K 9/16 (2006.01) A61K 9/56 (2006.01) A61K 38/00 (2006.01) A61K 47/26 (2006.01) A61K 47/34 (2006.01) A61K 47/40 (2006.01) A61K 47/44 (2006.01) A61P 43/00 (2006.01)

Patent

CA 2448814

Sustained-release compositions for injection wherein controlled release at the early stage and continuous release can be achieved by spray-drying a physiologically active protein while sustaining its physiological activity and enclosing it in a biodegradable polymer substance at a high efficiency; and physiologically active protein-containing sustained-release compositions for injection which substantially consist of the physiologically active protein and saccharides prepared by dissolving a spray-dried fine powder containing particles having a diameter of 10 µm or less at a ratio of 90% or above in a solution of a biodegradable polymer substance in an organic solvent and then removing the organic solvent in an oil.

L'invention concerne des compositions à libération prolongée à injecter, la libération régulée dans un premier temps puis continue de ces compositions pouvant être obtenue par séchage par pulvérisation d'une protéine physiologiquement active, la composition conservant son activité physiologique et renfermant une substance polymère biodégradable haute efficacité. L'invention concerne également des compositions à libération prolongée contenant une protéine physiologiquement active à injecter, ces compositions étant sensiblement constituées de ladite protéine physiologiquement active et de saccharides préparés par dissolution d'une poudre fine séchée par pulvérisation contenant des particules dont le diamètre est de 10 µm ou inférieur, selon un rapport de 90 % ou supérieur, dans une solution de substance polymère biodégradable, dans un solvant organique, ledit solvant étant ensuite éliminé dans une huile.

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