申请人:Yeo Yoon
公开号:US20080069857A1
公开(公告)日:2008-03-20
The present invention provides compositions and methods for inhibiting adhesions. The methods involve administering solutions containing hydrogel precursors such as polysaccharide derivatives, e.g., derivatives of hyaluronic acid, cellulose, or dextran, to a subject at a site where adhesions may form, e.g., as a consequence of surgery, injury, or infection. The hydrogel precursors, e.g., polysaccharide derivatives, become crosslinked following their administration to form a hydrogel that maintains tissue separation. In certain embodiments of the invention one or both solutions contains particles, e.g., polymeric nanoparticles or microparticles, so that a composite hydrogel containing the particles is formed. The solution(s), particle(s), or both, may contain a biologically active agent such as an agent that contributes to inhibiting adhesions. The biologically active agent may be covalently attached to a hydrogel precursor.
本发明提供了抑制粘连的组合物和方法。该方法涉及在可能形成粘连的部位向受试者施用含有水凝胶前体的溶液,例如多糖衍生物,例如透明质酸、纤维素或右旋糖。这些水凝胶前体,例如多糖衍生物,在施用后交联形成水凝胶,从而保持组织分离。在发明的某些实施例中,一个或两个溶液都含有颗粒,例如聚合物纳米粒子或微粒子,从而形成含有颗粒的复合水凝胶。溶液、颗粒或两者都可以含有生物活性剂,例如有助于抑制粘连的剂。生物活性剂可以共价地连接到水凝胶前体上。