Preparation for the treatment of hemophilia A inhibitor patients and a
process for producing such a preparation
    3.
    发明授权
    Preparation for the treatment of hemophilia A inhibitor patients and a process for producing such a preparation 失效
    血友病A抑制剂患者的治疗准备和制备这种制剂的方法

    公开(公告)号:US4831119A

    公开(公告)日:1989-05-16

    申请号:US881687

    申请日:1986-06-20

    摘要: A preparation for the treatment of hemophilia A inhibitor patients contains a protein or peptide having a specific Factor VIII:CAg activity of at least 0.5, preferably at least 1 VIII:CAg unit per mg protein, the ratio between the VIII:CAg activity and the VIII:C procoagulant activity being greater than 5:1, preferably greater than 10:1. A fragment of Factor VI-II:C, which displays a doublet of a molecular weight of 80/77 kD in electrophoresis, is reactive hemophilia A inhibitor antibodies and has VIII:CAg activity. This fragment and more low-molecular fragments of Factor VIII:C are capable of neutralizing the coagulation inhibiting effect of all tested antibodies. Such fragments can therefore be used as active component in preparations for providing immunotolerance towards Factor VIII:C in high-dose treatment of inhibitor patients. The peptides are moreover useful as an immunosorbent in specific extracorporeal adsorption treatment of inhibitor patients. The inhibitor reactive peptides can e.g. be recovered from plasma fractions by affinity chromatography, hydrophobic interaction chromatography or cation exchange or they may be biosynthetically and recovered in a similar manner.

    摘要翻译: PCT No.PCT / DK85 / 00105 Sec。 371日期1986年6月20日第 102(e)日期1986年6月20日PCT提交1985年11月5日PCT公布。 出版物WO86 / 02838 日期为1986年5月22日。用于治疗血友病A抑制剂患者的制剂含有具有特异性因子VIII的蛋白质或肽:CAg活性至少为0.5,优选至少为1 VIII:每克蛋白的CAg单位, VIII:CAg活性和VIII:C促凝血活性大于5:1,优选大于10:1。 因子VI-II:C在电泳中显示双重分子量为80/77 kD的片段是反应性血友病A抑制剂抗体,具有VIII:CAg活性。 因子VIII:C的该片段和更多低分子片段能够中和所有测试抗体的凝血抑制作用。 因此,这样的片段因此可用作在抑制剂患者的高剂量治疗中提供对因子VIII:C的免疫耐受的制剂中的活性成分。 此外,肽可用作抑制剂患者的特定体外吸附治疗中的免疫吸附剂。 抑制剂反应肽可以例如。 通过亲和层析,疏水相互作用层析或阳离子交换从血浆级分回收,或者可以以类似的方式生物合成和回收。

    Concentrate of the antihemophilic factor VIII and a process for
producing it
    4.
    发明授权
    Concentrate of the antihemophilic factor VIII and a process for producing it 失效
    抗血友病因子VIII的浓缩物及其生产方法

    公开(公告)号:US4650858A

    公开(公告)日:1987-03-17

    申请号:US673753

    申请日:1984-10-30

    摘要: Production of a high purity concentrate of the antihemophilic Factor VIII (AHF) by precipitation of an aqueous solution of cryoprecipitate from blood plasma in a first step with such an amount of polyethylene glycol (PEG), preferably about 4% by weight, as will precipitate a substantial amount of the present fibrinogen, subjecting the fibrinogen-free solution to a second precipitation step with preferably about 12% by weight of PEG in the presence of a salting-in agent, such as an amino acid, in particular lysine or arginine, or a carbohydrate, and then recovering the precipitate with a concentrated content of the present Factor VIII. The obtained Factor VIII concentrate with a very low content of immunoglobulins and other plasma proteins has a solubility in an aqueous injection medium of 45 to 500 units/ml and a high specific activity of up to 50 units/mg protein.

    摘要翻译: PCT No.PCT / DK84 / 00019 Sec。 371日期1984年10月30日 102(e)1984年10月30日PCT PCT Fils 3月20日,PCT PCT。 出版物WO84 / 03628 日期:1984年9月27日。通过在第一步骤中用这种量的聚乙二醇(PEG)沉淀血浆中的冷沉淀物水溶液,制备抗血友病因子VIII(AHF)的高纯度浓缩物,优选约4 重量百分比,因为会沉淀出大量的现有纤维蛋白原,使无纤维蛋白原溶液进行第二沉淀步骤,优选约12%(重量)的PEG在盐析剂例如氨基酸 ,特别是赖氨酸或精氨酸或碳水化合物,然后用本因子VIII的浓缩物质回收沉淀物。 获得的具有非常低含量的免疫球蛋白和其他血浆蛋白的因子VIII浓缩物在水性注射培养基中具有45至500单位/ ml的溶解度和高达50单位/ mg蛋白质的高比活性。

    Process for producing a coagulation active complex of factor VIII
fragments
    5.
    发明授权
    Process for producing a coagulation active complex of factor VIII fragments 失效
    制备因子VIII片段的凝血活性复合物的方法

    公开(公告)号:US5610278A

    公开(公告)日:1997-03-11

    申请号:US383034

    申请日:1995-02-03

    CPC分类号: C07K14/755 Y10S930/10

    摘要: A coagulation active complex of Factor VIII fragments is produced by causing coagulation inactive FVIII heavy chain to react with coagulation inactive FVIII light chain in the presence of a complex forming agent. Thus, FVIII-HC and FVIII-LC are converted to coagulation active FVIII complex in the presence of divalent metal ions, such as Mn.sup.2+, Ca.sup.2+ or C.sup.2+, or a component of the pro-thrombin complex.

    摘要翻译: 通过在复合成形剂的存在下使凝血活性的FVIII重链与凝血活性的FVIII轻链反应来产生因子VIII片段的凝血活性复合物。 因此,在二价金属离子如Mn2 +,Ca2 +或C2 +或前凝血酶复合物的组分存在下,FVIII-HC和FVIII-LC转化为凝血活性FVIII复合物。

    Process for producing a coagulation active complex of factor VIII
fragments
    7.
    发明授权
    Process for producing a coagulation active complex of factor VIII fragments 失效
    制备因子VIII片段的凝血活性复合物的方法

    公开(公告)号:US5543502A

    公开(公告)日:1996-08-06

    申请号:US383541

    申请日:1995-02-03

    CPC分类号: C07K14/755 Y10S930/10

    摘要: A coagulation active complex of Factor VIII fragments is produced by causing a coagulation inactive FVIII heavy chain to react with a coagulation inactive FVIII light chain in the presence of a complex forming agent. Thus, FVIII-HC and FVIII-LC are converted to coagulation active FVIII complex in the presence of metal ions, such as Mn.sup.2+, Ca.sup.2+, or Co.sup.2+ or a component of the prothrombin complex or a substance having reactivity to compounds containing the group --SH and/or --S--S.

    摘要翻译: 通过在复合成形剂存在下使凝血失活的FVIII重链与无凝血活性的FVIII轻链反应来产生因子VIII片段的凝血活性复合物。 因此,在金属离子如Mn2 +,Ca2 +或Co2 +或凝血酶原复合物的组分或与含-SH的化合物具有反应性的物质的存在下,FVIII-HC和FVIII-LC转化为凝血活性FVIII复合物 和/或-SS。