Bioactive keratin peptides
    2.
    发明授权
    Bioactive keratin peptides 有权
    生物活性角蛋白肽

    公开(公告)号:US07501485B2

    公开(公告)日:2009-03-10

    申请号:US10352786

    申请日:2003-01-28

    申请人: Donald R. Cowsar

    发明人: Donald R. Cowsar

    IPC分类号: C07K14/435

    摘要: Compositions containing biologically active peptides are disclosed. Active peptides are isolated fragments derived from human hair or sheep wool keratin proteins. Compositions may be prepared for pharmaceutical or topical administration or for use in cosmetic preparations.

    摘要翻译: 公开了含有生物活性肽的组合物。 活性肽是衍生自人类头发或羊毛角蛋白蛋白质的分离片段。 组合物可以制备用于药物或局部给药或用于化妆品制剂。

    Keratin containing implant material
    4.
    发明申请
    Keratin containing implant material 审中-公开
    角蛋白含植入材料

    公开(公告)号:US20030035820A1

    公开(公告)日:2003-02-20

    申请号:US10218100

    申请日:2002-08-13

    IPC分类号: A61K045/00 A61K038/17

    摘要: Methods for producing thin keratin films, sheets, and bulk materials, and products formed using these methods. One method includes providing hair, reducing the hair such that the disulfide linkages are broken and free cysteine thiol groups formed, separating out a more soluble keratin fraction in solution, forming a thin layer from the more soluble fraction, and air drying the keratin fraction in the presence of oxygen, thereby forming new disulfide bonds imparting strength to the resulting thin keratin film. One method includes reducing hair by heating the hair under nitrogen in an ammonium hydroxide and ammonium thioglycolate solution followed by centrifuging and collecting the supernatant containing the more soluble keratin fraction. The more soluble keratin in this method is precipitated using HCI, removed, and resuspended in ammonium hydroxide. The keratin solution thus formed is poured onto a flat surface and allowed to air dry into a thin keratin film. The film may be used as a wound dressing, a tissue-engineering scaffold, a diffusion membrane, a coating for implantable devices, and as a cell encapsulant. In another method, the keratin solution thus formed is concentrated, poured into a mold, and allowed to air dry into a three dimensional keratin product. The resulting bulk product can be used as a cross-linked implantable biomaterial for soft and hard tissue replacement. In another method, a keratin solution is emulsified and freeze dried, forming a porous, open cell keratin material.

    摘要翻译: 用于生产薄角蛋白薄膜,片材和散装材料的方法以及使用这些方法形成的产品。 一种方法包括提供毛发,减少头发,使得二硫键断裂,形成游离的半胱氨酸硫醇基团,在溶液中分离出更可溶的角蛋白级分,从较可溶级分形成薄层,并将角蛋白级分空气干燥 氧的存在,从而形成新的二硫键,赋予所得薄的角蛋白薄膜强度。 一种方法包括通过在氮气下在氢氧化铵和巯基乙酸铵溶液中加热头发,然后离心并收集含有较可溶性角蛋白级分的上清液来减少头发。 该方法中较易溶解的角蛋白使用HCl沉淀,除去并重新悬浮于氢氧化铵中。 将如此形成的角蛋白溶液倒入平坦表面,并使其干燥成薄的角蛋白膜。 该膜可以用作伤口敷料,组织工程支架,扩散膜,用于可植入装置的涂层,以及作为细胞密封剂。 在另一种方法中,将如此形成的角蛋白溶液浓缩,倒入模具中,并使其风干至三维角蛋白产品。 所得到的散装产品可用作用于软组织和硬组织置换的交联可植入生物材料。 在另一种方法中,将角蛋白溶液乳化并冷冻干燥,形成多孔的开放细胞角蛋白材料。

    Wound care products containing keratin
    7.
    发明授权
    Wound care products containing keratin 有权
    伤口护理产品含有角蛋白

    公开(公告)号:US07732574B2

    公开(公告)日:2010-06-08

    申请号:US10583445

    申请日:2004-12-16

    IPC分类号: C08H1/06 A61L15/00

    摘要: The invention relates to a would care product that provides a biochemical environment around a wound to promote wound healing. The wound care product includes a keratin protein fraction material in which the protein fraction is intact, is from the intermediate filament protein family or the high sulfur protein family and in which the protein fraction is S-sulfonated. The invention also described a method of making a wound care product.

    摘要翻译: 本发明涉及一种在伤口周围提供生化环境以促进伤口愈合的护理产品。 伤口护理产品包括其中蛋白质级分完整的角蛋白蛋白级分物质,来自中间丝蛋白家族或高硫蛋白质家族,其中蛋白质级分是S-磺化的。 本发明还描述了一种制备伤口护理产品的方法。

    Keratin-based sheet material for biomedical applications and method of
production
    10.
    发明授权
    Keratin-based sheet material for biomedical applications and method of production 有权
    用于生物医学应用的角蛋白片材和生产方法

    公开(公告)号:US6165496A

    公开(公告)日:2000-12-26

    申请号:US365976

    申请日:1999-08-02

    摘要: A sheet wound dressing formed of cross linked keratin. An insoluble, largely Beta keratin fraction from human hair is acidified to a low pH, preferably less than about 3, which partially solubilizes the keratin by weakening hydrogen bonds. The suspension is added to base, such as ammonium hydroxide, forming a slurry. The slurry is cast directly onto a flat surface, allowing the re-formation of cross-links including hydrogen bonds and disulfide bonds. The resulting cross-linked keratin sheet can be used as a sheet wound dressing or as a scaffolding for growth of cells. The insoluble keratin can be derived from human hair which is washed, rinsed, dried, chopped and treated with peracetic acid to break some accessible disulfide linkages. The treated hair is filtered, rinsed, dried, and ground into a keratin powder. The keratin powder is suspended in a mixture of ammonium hydroxide and ammonium thioglycollate and heated sufficiently to dissolve the soluble keratin fraction, followed by cooling and centrifugation to concentrate the insoluble, largely Beta keratin fraction.

    摘要翻译: 由交联角蛋白形成的伤口敷料。 将来自人类头发的不溶性大部分β角蛋白级分酸化至低pH,优选小于约3,通过削弱氢键来部分溶解角蛋白。 将悬浮液加入到碱如氢氧化铵中,形成浆料。 将浆料直接浇铸到平坦表面上,允许重新形成包括氢键和二硫键的交联。 所得到的交联角蛋白片可用作片状伤口敷料或用作细胞生长的支架。 不溶性角蛋白可以衍生自人毛,洗涤,漂洗,干燥,切碎并用过乙酸处理以破坏一些可接近的二硫键。 将经处理的毛发过滤,漂洗,干燥并研磨成角蛋白粉末。 将角蛋白粉末悬浮在氢氧化铵和巯基乙酸铵的混合物中并充分加热以溶解可溶性角蛋白级分,然后冷却并离心以浓缩不溶性的大部分β角蛋白级分。