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    • 9. 发明申请
    • ALBUMIN BASED HYDROGEL
    • 基于ALBUMIN的HYDROGEL
    • WO1995015352A1
    • 1995-06-08
    • PCT/CA1994000650
    • 1994-11-24
    • UNIVERSITE DU QUEBEC A MONTREAL
    • UNIVERSITE DU QUEBEC A MONTREALFORTIER, Guy
    • C08H01/00
    • G02B1/043A61L15/26A61L15/32A61L15/60C08H1/00C08J3/075C08L89/00C08L2666/02C08L71/02
    • Novel bioartificial hydrogels consisting of a three-dimensional crosslinked mixture of: (a) a bifunctionalized polyethylene oxide, activated with an activating agent, dissolved in an aqueous solution; and (b) albumin type protein. The novel hydrogels are based on the crosslinking of albumin type protein of various sources including, for example, bovine serum albumin, lactalbumin or ovalbumin, with a bifunctionalyzed polyethylene oxide, most proferably polyethylene glycol, or a mixture of bifunctionalyzed polyethylene oxides preferably polyethylene glycol, of various molecular masses (Mr 2,000 to 35,000), dissolved in aqueous solution in adequate proportions. Also provided is a method and conditions for preparing the novel hydrogels. Also divulged are a variety of biomedical applications for the novel hydrogels. Additionally, it has been found that the mechanical properties of the novel hydrogels can be improved by adding to the casting solution unreactive polyethylen glycol or other inert polymer of high molecular masses (Mr > 100,000). In general terms the novel hydrogels possess advantageous properties such as shape retention and shape memory, high water content (more than 94 % (w/w) based on the dry weight of the hydrogel), good mechanical and optical properties. The hydrogels exhibit additional charcteristics which may render them extremely useful in the pharmaceutic and medical areas due to other advantageous properties such as biocompatibility, resistance to proteases action, slow release of various drugs, hydrophillic surface, good oxygen permeability, controlled porosity.
    • 由以下三维交联混合物组成的新型生物人造水凝胶:(a)活化剂活化的双官能化聚环氧乙烷,溶解在水溶液中; 和(b)白蛋白型蛋白质。 新型水凝胶基于各种来源的白蛋白型蛋白质的交联,包括例如牛血清白蛋白,乳白蛋白或卵清蛋白,具有双官能化聚环氧乙烷,最优选聚乙二醇,或双功能化聚环氧乙烷的混合物,优选聚乙二醇, 的各种分子量(2,000至35,000),以足够的比例溶解在水溶液中。 还提供了制备新颖水凝胶的方法和条件。 还泄露了新型水凝胶的各种生物医学应用。 此外,已经发现,通过向浇铸溶液中加入非反应性聚乙二醇或其它高分子量惰性聚合物(Mr> 100,000)可以改善新型水凝胶的机械性能。 一般来说,新型水凝胶具有诸如形状保持和形状记忆等有益的特性,高水含量(基于水凝胶的干重大于94%(w / w)),良好的机械和光学性能。 水凝胶呈现出额外的特征,由于其它有利的性质如生物相容性,抗蛋白酶作用,缓慢释放各种药物,亲水表面,良好的透氧性,受控的孔隙率,这些特征可能使它们在药物和医学领域中非常有用。