Heparin cofactor ii preparation and process therefor

A - Human Necessities – 61 – K

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A61K 38/00 (2006.01) A61K 38/58 (2006.01) C07K 1/14 (2006.01) C07K 1/36 (2006.01) C07K 14/47 (2006.01) C07K 14/745 (2006.01) C07K 14/81 (2006.01)

Patent

CA 2308610

Heparin cofactor II (HCII)-containing preparations substantially free from at least one contaminant selected from among degrading factors, degraded HCII, polymerized HCII and coloring matters, in particular, HCII-containing preparations substantially free from degrading factors and degraded HCII; one of the preparations as stated above substantially free from any infective virus; and a process for producing these preparations which involves the step of effecting an operation selected from among hydrophobic chromatography, fractionation by using a water-soluble polymer, salting-out and affinity chromatography with the use of a basic amino acid as a ligand, preferably together with the step of filtration with the use of a porous hollow yarn.

L'invention concerne des préparations renfermant le cofacteur II de l'héparine (HCII), lesquelles préparations sont sensiblement exemptes d'au moins un contaminant choisi parmi les facteurs de dégradation, le HCII dégradé, le HCII polymérisé et des matières colorantes. L'invention concerne, en particulier, des préparations renfermant le HCII, sensiblement exemptes de facteurs de dégradation et de HCII dégradé; une des compositions précitées sensiblement exempte de tout virus infectieux; ainsi qu'un procédé permettant de produire ces préparations, lequel procédé consiste à effectuer en guise de première étape, une opération choisie parmi la chromatographie hydrophobe, le fractionnement utilisant un polymère soluble dans l'eau, la chromatographie par relargage et la chromatographie d'affinité utilisant un amino acide basique comme ligand, puis à procéder, de préférence, à une étape de filtration au moyen d'un fil creux poreux.

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