Augmentation and repair of age-related soft tissue defects

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 5/02 (2006.01) C12N 5/071 (2010.01) A61L 27/38 (2006.01) A61L 27/60 (2006.01) A61K 35/12 (2006.01)

Patent

CA 2390053

The present invention discloses methods for the long-term augmentation and/or repair of skin defects (scars, skin laxness, skin thinning, and skin augmentation), cellulite, breast tissue, wounds and burns, urological and gastroesophageal sphincter structures, hernias, periodontal disease and disorders, tendon and ligament tears and baldness, by the injection or direct surgical placement/implantation of autologous cultured cells and/or cultured cell-produced extracellular matrix that is derived from connective tissue, dermis, fascia, lamina propria, stroma, adipose tissue, muscle, tendon, ligament or the hair follicle. The corrective application is done on tissue proximal or within the area of the defect. The method involves retrieving viable cells from the subject, a neonate or human fetus. Alternatively, the corrective application involves the cells placed in a matrix, preferably comprised of autologous extracellular matrix constituents as a three- dimensional structure or as a suspension, prior to placement into a position with respect to the subject's defect. In a further embodiment, the preferable autologous extracellular matrix constituents are collected from culture and placed in a position with respect to the subject's defect.

La présente invention concerne des procédés permettant d'augmenter à long terme et/ou de réparer des imperfections cutanées (cicatrices, relâchement cutané, amincissement cutané, et renforcement cutané), des tissus mammaires, des blessures et des brûlures, des structures des sphincters gastro-oesophagien et urologique, des hernies, des troubles et des maladies parodontales, des déchirures de tendons et de ligaments, ainsi que de traiter la cellulite et la calvitie, par injection ou implantation chirurgicale directe de cellules cultivées autologues et/ou de matrices extracellulaires cultivées produites à partir de cellules provenant du tissu conjonctif, du derme, du fascia, des tissus du chorion de l'intestin, du stroma, de tissus adipeux, des muscles, des tendons, des ligaments ou des follicules pileux. La correction est effectuée sur le tissu proximal ou dans la zone d'imperfection. Le procédé comprend le retrait de cellules viables d'un sujet, un nouveau-né ou un foetus humain. Dans un autre mode de réalisation, l'application de correction implique que les cellules placées dans une matrice, comprennent, de préférence, des constituants de matrice extracellulaires autologues comme structure tridimensionnelle ou comme suspension, avant d'être mise dans une certaine position par rapport aux défauts du sujet. Dans un autre mode de réalisation encore, les constituants de matrice extracellulaires autologues sont prélevés d'une culture et mis dans une certaine position par rapport aux défauts du sujet.

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