摘要:
A method for stabilising a human blood protein or human blood plasma protein with a molecular weight of >10 KDa by adding melezitose to a solution comprising the human blood protein or human blood plasma protein with a molecular weight of >10 KDa.
摘要:
A process of purifying a Growth Factor Protein in a purification sequence employing chromatography characterized in that at least one chromatography is performed using a multimodal resin the Growth Factor Protein binds to the multimodal resin at a pH between 4 to 6.2, and the Growth Factor Protein is eluting at a pH>6.3, and the elution of Growth Factor Protein is improved by addition of arginine and/or NaCl to the eluting buffer. The multimodal resin step is followed by a yeast derived affinity ligand resin step, which results of a purity of the product>90%.
摘要:
A method of preparing a purified, virus inactivated and virus safe antibody preparation from a starting solution comprising antibodies and contaminants, the method comprising the steps of: (a) adjusting the pH of the starting solution to about 4.6 to about 4.95 in particular to about 4.8 to about 4.95 to produce an intermediate solution; (b) adding caprylate and/or heptanoate ions to the intermediate solution and maintaining the pH at about 4.6 to about 4.95 in particular pH at about 4.8 to about 4.95, whereby a precipitate is formed and the antibodies are essentially present in the supernatant; (c) incubating the supernatant solution under conditions of caprylate and/or heptanoate ion concentration, time, pH and temperature optionally concentrating and diafiltrating the filtrated solution before pH adjustment; (d) applying the filtered solution with a least one anion exchange resin and optionally with two different anion exchange resins under conditions that allow binding of contaminants to the resin while not allowing significant binding' of the antibodies to the resin, wherein a purified, virus inactivated and virus safe antibody preparation is produced.
摘要:
A process for preparing a hemostatically active preparation containing von Willebrand factor (vWF) from a fraction of human plasma by chromatographic purification of a vWF-containing plasma fraction on an anion-exchange material which has the anion-exchanging groups on grafted polymeric structures (tentacle materials), collecting a vWF-containing fraction, followed by purification of said fraction using gel permeation to prepare a purified thermally stable vWF-containing preparation; and heating the preparation for inactivating viruses.
摘要:
A method of preparing a purified, virus inactivated and virus safe antibody preparation from a starting solution comprising antibodies and contaminants, the method comprising the steps of: (a) adjusting the pH of the starting solution to about 4.6 to about 4.95 in particular to about 4.8 to about 4.95 to produce an intermediate solution; (b) adding caprylate and/or heptanoate ions to the intermediate solution and maintaining the pH at about 4.6 to about 4.95 in particular pH at about 4.8 to about 4.95, whereby a precipitate is formed and the antibodies are essentially present in the supernatant; (c) incubating the supernatant solution under conditions of caprylate and/or heptanoate ion concentration, time, pH and temperature optionally concentrating and diafiltrating the filtrated solution before pH adjustment; (d) applying the filtered solution with a least one anion exchange resin and optionally with two different anion exchange resins under conditions that allow binding of contaminants to the resin while not allowing significant binding' of the antibodies to the resin, wherein a purified, virus inactivated and virus safe antibody preparation is produced.
摘要:
A process for preparing A1AT from A1AT-containing solutions, comprising the following steps: (a) subjecting an A1AT-containing solution to ion-exchange chromatography; (b) adding detergents and optionally a solvent for inactivating lipid-enveloped viruses; (c) followed by increasing the salt concentration to salt out the detergents. A1AT having a purity of >90% with an activity of ≧0.8 PEU/mg in its active form.
摘要翻译:一种从含有A1AT的溶液制备A1AT的方法,包括以下步骤:(a)使含A1AT的溶液进行离子交换层析; (b)添加去污剂和任选的用于灭活脂质包膜病毒的溶剂; (c),然后增加盐浓度以除去洗涤剂。 纯度为> 90%,活性为> = 0.8 PEU / mg的活性形式的A1AT。
摘要:
Disclosed is a process for preparing agents containing virus-inactivated vitamin K-dependent plasma components as well as protein C, protein S, factors II, VII, IX and/or X as well as combinations thereof, such as, for example, PPSB preparations, wherein a source containing these components is subjected to a appropriate separation procedures, especially by using membrane-chromatographic methods.
摘要:
The invention concerns a method for preparing native collagen, comprising pretreatment of the collagen in a mixer with double transverse cutters equipped with a system controlling agitating and shearing velocity and a thermostat, and a subsequent step of sterilizing the collagen in liquid medium. The invention also concerns a sterile collagen, in particular a collagen mostly of type I, in native state and in particular pharmaceutical and/or parapharmaceutical and/or medico-surgical and/or ophthalmologic and/or cosmetic compositions and applications thereof.
摘要:
The method for the aptitude testing of protein fractions containing factor VIII the further processing of which comprises a pasteurizing step is performed in such a way that the starting material is examined for fragments within a range of from 20 to 50 kD. Fragments of factor VIII within this range evidently cause inhibitor formations in patients pretreated with factor VIII. Batches contaminated with such fragments can also be utilized, i.e., for the preparation of a high purity virus-free factor VIII by size exclusion chromatography on hydrophilic materials.
摘要:
A process for the preparation of factor IX from a biological source by chromatography involves prior treatment with ammonium sulfate as a protein precipitant at a concentration of from 1.5-2.3 mol/l.