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公开(公告)号:US5656297A
公开(公告)日:1997-08-12
申请号:US237057
申请日:1994-05-03
申请人: Howard Bernstein , Yan Zhang , M. Amin Khan , Mark A. Tracy
发明人: Howard Bernstein , Yan Zhang , M. Amin Khan , Mark A. Tracy
IPC分类号: A61K9/00 , A61K9/16 , A61K9/52 , A61K9/70 , A61K38/21 , A61K38/22 , A61K38/35 , A61K38/46 , A61K47/30 , A61K47/34 , A61K9/14
CPC分类号: A61K9/1694 , A61K33/10 , A61K33/30 , A61K38/212 , A61K38/27 , A61K38/35 , A61K38/465 , A61K9/1611 , A61K9/1647 , A61K9/7007 , C12Y301/27005 , Y10S514/805 , Y10S514/935
摘要: The present invention relates to a composition for the modulated release of a biologically active agent. The composition comprises a biocompatible polymeric matrix, a biologically active agent which is dispersed within the polymeric matrix, and a metal cation component which is separately dispersed within the polymeric matrix, whereby the metal cation component modulates the release of the biologically active agent from the polymeric matrix. The present invention also relates to a method for modulating the release of a biologically active agent from a biocompatible polymeric matrix, comprising the steps of dissolving a biocompatible polymer in a solvent to form a polymer solution and also separately dispersing a metal cation component and a biologically active agent within the polymer solution. The polymer solution is then solidified to form a polymeric matrix, wherein at least a significant portion of the metal cation component is dispersed in the polymeric matrix separately from the biologically active protein, and whereby the metal cation component modulates the release of the biologically active agent from the polymeric matrix.
摘要翻译: 本发明涉及用于调节释放生物活性剂的组合物。 组合物包含生物相容性聚合物基质,分散在聚合物基质内的生物活性剂和分散分散在聚合物基质内的金属阳离子组分,由此金属阳离子组分调节生物活性剂从聚合物中的释放 矩阵。 本发明还涉及一种用于调节生物相容性聚合物基质释放生物活性剂的方法,包括以下步骤:将生物相容性聚合物溶解在溶剂中以形成聚合物溶液,并且还分别分散金属阳离子组分和生物相容性聚合物 聚合物溶液中的活性剂。 然后将聚合物溶液固化以形成聚合物基质,其中至少大部分金属阳离子组分与生物活性蛋白质分开分散在聚合物基质中,由此金属阳离子组分调节生物活性剂的释放 从聚合物基质。