Agents for corneal or intrastromal administration to treat...

A - Human Necessities – 61 – K

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A61K 31/17 (2006.01) A61K 31/40 (2006.01)

Patent

CA 2478965

Methods and preparations for treating disorders of the eye and/or causing dissolution of corneal proteoglycans and organized healing of corneal stroma, softening of the cornea for non-surgical refractive correction of eyesight, removing corneal haze and opacification, inhibiting fibroblasts and preventing corneal fibrosis and scar formation, treating pterigiums and treating corneal neovascularization as well as iris neovascularization. Preparations containing a) urea, b) urea derivatives (e.g., hydroxyurea, thiourea), c) antimetabolites, e) urea, urea derivatives, non-enzymatic proteins, nucleosides, nucleotides and their derivatives (e.g., adenine, adenosine, cytosine, cytadine, guanine, guanitadine, guanidinium, guanidinium chloride, guanidinium salts, thymidine, thymitadine, uradine, uracil, cysteine), reduced thioctic acid, uric acid, calcium acetyl salicylate, ammonium sulfate, isopropyl alcohol, ethanol, polyethylene glycol, polypropylene glycol or other compounds capable of causing nonenzymatic dissoultion of the corneal protoeglycans or f) any of the possible combinations thereof, are administered to the eye in therapeutically effective amounts.

L'invention concerne des procédés et des préparations pour traiter des troubles oculaires et/ou provoquer la dissolution de protéoglycanes cornéens et soigner le stroma cornéen, l'amollissement de la cornée pour une correction de la vision réfractive non chirurgicale, éliminer le trouble cornéen et l'opacification, inhiber des fibroblastes et empêcher la formation de fibrose cornéenne et de cicatrices, traiter le pterygium et traiter la néovascularisation cornéenne ainsi que la néovascularisation de l'iris. Selon l'invention, des préparations contiennent : a) de l'urée, b) des dérivés d'urée (par exemple de l'hydroxyurée, de la thiourée), c) des antimétabolites, e) de l'urée, des dérivés de l'urée, des protéines non enzymatiques, des nucléosides, des nucléotides et leurs dérivés (par exemple de l'adénine, de l'adénosine, de la cytosine, de la cytadine, de la guanine, de la guanitadine, du guanidinium, du chlorure de guanidinium, des sels de guanidinium, de la thymidine, de la thymitadine, de l'uradine, de l'uracil, de la cystéine), un acide thioctique réduit, un acide urique, du salicylate d'acétyle de calcium, du sulfate d'ammonium, de l'alcool d'isopropyle, de l'éthanol, du glycol de polyéthylène, du glycol de polypropylène, ou un autre composé capable de provoquer une dissolution non enzymatique des protoéglycanes cornéennes ou f) une de leurs combinaisons possibles. Lesdites préparations sont administrées à l'oeil dans des quantités efficaces thérapeutiquement.

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