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Method for making highly potent plasminogen

阅读:3发布:2022-10-05

专利汇可以提供Method for making highly potent plasminogen专利检索,专利查询,专利分析的服务。并且The present invention is directed to a process for making pure human plasminogen suitable for the preparation of the plasminogen-streptokinase complex. The method of the present invention allows the removal of impurities from plasminogen prior to complexing the latter with streptokinase, resulting in a plasminogen-streptokinase complex with much higher plasminogen activating activity.,下面是Method for making highly potent plasminogen专利的具体信息内容。

1. THE PROCESS OF PURIFYING PLASMINOGEN CONSISTING ESSENTIALLY IN PREPARING A SOLUTION OF 0.5-50 MG./ML. OF A PLASMINOGEN FREE OF HEPATITIS AGENT IN WATER BUFFERED TO A PH OF 5 - 10 AND CONTAINING 0.01 - 2 MOLAR CONCENTRATION OF A SOLUBILITY ENHANCER, PRECIPITATING THE IMPURITIES ASSOCIATED WITH SAID PLASMINOGEN BY ADDING SAID SOLUTION AMMONIUM SULFATE TO A MOLAR CONCENTRATION OF BETWEEN 0.1 AND Y REMOVING THE FORMED PRECIPITATE, AND PRECIPITATING THE SUBSTANTIALLY PURE PLASMINOGEN BY ADJUSTING THE MOLAR CONCENTRATION OF AMMONIUM SULFATE OF THE SOLUTION SO OBTAINED TO A MOLAR CONCENTRATION OF BETWEEN X AND 4.0 WHEREIN X - Y REPRESENTS A MOLARITY DIFFERENCE OF AT LEAST 0.2 AND Y IS BETWEEN 0.6 AND 1.2.
2. The process of claim 1 wherein said plasminogen is Human plasminogen.
3. The process of claim 1 wherein said precipitate of impurities is removed by centrifugation.
4. The process of claim 1 wherein said substantially pure plasminogen is collected by centrifugation.
5. The process of claim 1 wherein said solubility enhancer is lysine.
6. The process of claim 1 wherein said solution containing plasminogen which is to be purified also contains between 5 and 20 mg./ml. of an inorganic salt.
7. The process of claim 6 wherein said inorganic salt is sodium chloride.
8. The process of claim 1 wherein x - y is 0.6.
9. The process of claim 8 wherein y is 0.6 and x is 1.2.
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