29-03-2012 дата публикации
Номер: US20120076868A1
Принадлежит:
The present invention is directed to a stabilized cross-linked hydrogel matrix comprising a first high molecular weight component and a second high molecular weight component that are covalently linked, and at least one stabilizing or enhancing agent, wherein the first high molecular weight component and the second high molecular weight component are each selected from the group consisting of polyglycans and polypeptides. This stabilized hydrogel matrix may be prepared as bioactive gels, pastes, slurries, cell attachment scaffolds for implantable medical devices, and casting or binding materials suitable for the construction of medical devices. The intrinsic bioactivity of the hydrogel matrix makes it useful as a gel or paste in multiple applications, including as a cell attachment scaffold that promotes wound healing around an implanted device, as gels and pastes for induction of localized vasculogenesis, wound healing, tissue repair, and regeneration, as a wound adhesive, and for tissue bulking. 1. A method for promoting tissue regeneration in mammals comprising the steps of:identifying a specific site in need of tissue regeneration; andadministering a therapeutically effective amount of a cross-linked bioactive hydrogel matrix to the identified site;wherein the bioactive hydrogel matrix comprises a polyglycan covalently cross-linked to a polypeptide and further comprising at least one enhancing agent selected from the group consisting of polar amino acids, intact collagen, divalent cation chelators, and combinations thereof.2. The method of claim 1 , wherein said administering step comprises administering the hydrogel matrix at a vascular terminus claim 1 , wherein the hydrogel matrix is positioned such that the matrix extends laterally from the vascular terminus.3. The method of claim 1 , wherein the hydrogel matrix is cross-linked prior to administration.4. The method of claim 1 , wherein the hydrogel matrix is cross-linked in situ.5. The method of claim 1 , ...
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