Extracts of shark cartilage, process of production and uses...

C - Chemistry – Metallurgy – 07 – K

Patent

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C07K 14/78 (2006.01) A61K 35/60 (2006.01) A61K 38/03 (2006.01) A61K 38/39 (2006.01) C07K 1/14 (2006.01) C07K 4/12 (2006.01) A61K 7/40 (1995.01)

Patent

CA 2212010

The present invention relates to cartilage extracts and to a method of producing the same. Shark cartilage extracts having anti- angiogenic, direct anti-tumor proliferating, anti-inflammatory and anti- collagenolytic activities have been obtained by an improved process. The process comprises the steps of obtaining a homogenate of cartilage in an aqueous solution, this homogenate being centrifuged and further fractionated to obtain a total extract having molecules of a molecular weight comprised between 0 to 500 KDa. The composition of the liquid extract has then been investigated by different ways. Further fractionation of this extract led to the preliminary characterization of some of its active components. Due to the multiplicity of biological activities of the total liquid extract, it can be used for treating numerous diseases or conditions such as those having components selected from the group consisting of tumor proliferation, angiogenesis, inflammation and collagenolysis. This extract has no offensive effect on normal body functions. Therefore, this shark cartilage extract has a very promising therapeutic value. The process for the obtention of cartilage extracts is simple and efficient. The unexpectedly valuable products obtained by this process are therefore an indication of a new and non- obvious process.

La présente invention concerne des extraits de cartilage, ainsi que leur procédé de préparation. Ce procédé amélioré a permis d'obtenir des extraits de cartilage de requin ayant des activités antiangiogéniques, anti-inflammatoires, anticollagénolytiques, et agissant directement contre la prolifération tumorale. Ce procédé comprend les étapes suivantes: obtention d'un homogénat de cartilage en solution aqueuse, qui est ensuite centrifugé puis fractionné afin de donner un extrait global dont les molécules ont un poids compris entre 0 et 500 kDa. Cette composition d'extrait liquide a été ensuite étudiée de différentes manières. Un fractionnement supplémentaire de cet extrait a permis d'obtenir les caractéristiques préliminaires de certains de ses composants actifs. Etant donné la multiplicité des activités biologiques de l'ensemble de cet extrait liquide, celui-ci peut être utilisé dans le traitement de nombreuses maladies, ou encore d'états réunissant des composantes du groupe suivant: prolifération tumorale, angiogénèse, inflammation et collagénolyse. Cet extrait de cartilage de requin n'engendre aucune conséquence néfaste sur les fonctions normales du corps, ce qui lui confère une valeur thérapeutique très prometteuse. Le procédé employé pour l'obtention de ces extraits est simple et efficace, et les produits d'une valeur inattendue ainsi obtenus sont révélateurs d'un tout nouveau procédé non évident.

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