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    • 5. 发明申请
    • COLONIC DELIVERY OF ADSORBENTS
    • 寄生虫的殖民交付
    • WO2006122835A1
    • 2006-11-23
    • PCT/EP2006/005629
    • 2006-05-18
    • DA VOLTERRACENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEHUGUET, Hélène-CélineFATTAL, EliasANDREMONT, AntoineTSAPIS, Nicolas
    • HUGUET, Hélène-CélineFATTAL, EliasANDREMONT, AntoineTSAPIS, Nicolas
    • A61K9/16A61K47/36A61K9/50
    • A61K9/1652A61K9/16A61K9/5036A61K47/36
    • Orally administrable, site-specific (colonic), particulate delivery systems including adsorbents are disclosed. When delivered specifically to the colon, they can remove various substances present in, or as they reach, the colon. Methods of treatment using the delivery systems, and methods of preparing the delivery systems, are also disclosed. The particulate delivery systems are based on adsorbent matrices encapsulated into and/or onto particles, which selectively deliver the adsorbents to the colon. Representative drug delivery devices include pectin beads, which can optionally be crosslinked with metal ions such as zinc and/or calcium. The delivery system protects the adsorbent and prevents its adsorbing effect in the upper gastro-intestinal (GI) tract. When the particles are made from pectin, and the beads are administered to the colon, specific pectinolytic enzymes in the colon degrade the pectin, allowing the adsorbent to be released and to be fully active. Antibiotics, toxins, and other absorbable substances present in the colon will then be inactivated by adsorption into or onto the adsorbent.
    • 可口服给药,特异性(结肠),包括吸附剂的颗粒递送系统。 当特异性地输送到结肠时,它们可以去除结肠中存在的或当它们到达的各种物质。 还公开了使用递送系统的治疗方法和制备递送系统的方法。 颗粒递送系统基于封装在颗粒中和/或上的吸附剂基质,其选择性地将吸附剂递送到结肠。 代表性的药物递送装置包括果胶珠,其可任选地与金属离子如锌和/或钙交联。 递送系统保护吸附剂并防止其在上胃肠(GI)道中的吸附作用。 当颗粒由果胶制成,并且将珠子施用于结肠时,结肠中的特异性果胶分解酶降解果胶,允许吸附剂被释放并且完全活性。 然后,存在于结肠中的抗生素,毒素和其它可吸收物质将通过吸附到吸附剂中或其上而被灭活。