Process for removing endotoxins

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 1/22 (2006.01) A61K 35/16 (2006.01) A61K 38/38 (2006.01) C07K 14/245 (2006.01) C07K 14/765 (2006.01) C08B 37/00 (2006.01)

Patent

CA 2159995

A process for the removal of endotoxins from a biological product, particularly a blood plasma fraction such as albumin, comprises contacting the biological product with a cross-linked hydrophilic matrix comprising a copolymer of allyl dextran and N,N'-methylene bisacrylamide under conditions effective to bind endotoxins in the biological product to the matrix, and recovering purified biological product from which endotoxins have been removed. After recovery of the purified biological product, the matrix can be regenerated under conditions effective to elute bound endotoxins from the matrix.

Procédé d'élimination d'endotoxines d'un produit biologique, et notamment d'une fraction de plasma sanguin telle que l'albumine. Ce procédé consiste à mettre le produit biologique en contact avec une matrice hydrophile réticulée comportant un copolymère de dextrane allylique et de N,N'-méthylène-bisacrylamide, dans des conditions telles que les endotoxines présentes dans le produit biologique se lient à la matrice, et à récupérer le produit biologique purifié dont on a éliminé les endotoxines. Après la récupération du produit biologique purifié, on peut régénérer la matrice dans des conditions telles que les endotoxines sont séparées par élution de la matrice.

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