Adsorbent for immunoglobulins and complexes thereof,...

C - Chemistry – Metallurgy – 07 – K

Patent

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C07K 17/02 (2006.01) A61K 35/14 (2006.01) A61M 1/36 (2006.01) B01J 20/32 (2006.01) C07K 17/00 (2006.01)

Patent

CA 2244734

An adsorbent that exhibits a high specificity in adsorbing immunoglobulins and/or complexes thereof, is extremely reduced in the lowering of the adsorption characteristic during sterilization or storage, is highly stable and safe, and is prepared by immobilizing on a water-soluble support either a peptide derivative which has undergone at least one of the deletion, substitution, insertion or addition of amino acids in a peptide having a specified amino acid sequence or an amino acid sequence, or the above peptide derivative which has undergone the addition of Lyn or Cys at the amino and/or carboxyl terminal thereof; a device for adsorption and removal made by packing the adsorbent in a vessel equipped with effluent preventing means; and a method of adsorbing and removing immunoglobulins and/or complexes thereof contained in the blood, plasma or other body fluids with the adsorbent.

Cet adsorbant qui possède des propriétés très spécifiques d'adsorption d'immunoglobulines et/ou de complexes de celles-ci, ne présente pratiquement pas, lors d'une étape de stérilisation ou lors de sa conservation, d'abaissement de sa caractéristique d'adsorption; il est extrêmement stable et sûr et sa préparation consiste à immobiliser sur un support soluble dans l'eau, soit un dérivé peptidique ayant subi au moins l'un des processus de délétion, substitution, insertion ou addition d'acides aminés dans un peptide possédant une séquence d'acides aminés spécifiée ou non, soit le dérivé peptidique ci-dessus mentionné auquel on a ajouté Lyn ou Cys au niveau de sa terminaison amino et/ou carboxyle. On décrit également un dispositif d'adsorption et d'enlèvement d'immunoglobulines et/ou de complexes de celles-ci, dispositif que l'on obtient en enfermant l'adsorbant dans un récipient pourvu de moyens entravant l'écoulement, ainsi qu'un procédé d'adsorption et d'enlèvement, au moyen de l'adsorbant, d'immunoglobulines et/ou de complexes de celles-ci, contenus dans le sang, le plasma ou dans d'autres liquides organiques

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