Dha and pedf, a therapeutic composition for nerve and...

A - Human Necessities – 61 – K

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A61K 38/18 (2006.01) A61P 25/28 (2006.01) A61P 27/02 (2006.01) C07K 14/47 (2006.01) C07K 14/475 (2006.01)

Patent

CA 2723139

The combination of pigment epithelium-derived factor (PEDF) and docosahexaenoic acid (DHA) has been discov-ered to act synergistically to enhance cell survival and decrease apoptosis in retinal pigment epithelial (RPE) cells. PEDF and DHA synergistically protected RPE cells by confronted with oxidative stress by blocking apoptotic cell death and increasing the synthesis of the important mediator neuroprotectin D 1. Administering a composition comprising PEDF and DHA will halt or slow down the initiation and progression of macular degeneration, retinitis pigmentosa and retinal degeneration. In addition, the topical applica-tion of the combination of PEDF and DHA was found to promote cornea nerve regeneration after refractive surgery, and thus this combination could be used to prevent the complications of refractive surgery and certain diseases, e.g., neurotrophic keratitis due to Herpes virus.

L'invention concerne la combinaison de facteur dérivé d'épithélium de pigment (PEDF) et d'acide docosahexaénoïque (DHA) qui agissent de manière synergique pour amplifier la survie des cellules et diminuer l'apoptose dans des cellules épithéliales de pigment rétinien (RPE). PEDF et DHA protègent par synergie les cellules RPE en les confrontant à un stress oxydatif par blocage de la mort cellulaire apoptotique et l'augmentation de la synthèse du médiateur important neuroprotectine D 1. L'administration d'une composition comprenant PEDF et DHA arrêtera ou ralentira l'initiation et la progression de la dégénérescence maculaire, la rétinite pigmenteuse et la dégénérescence rétinienne. En outre, l'application topique de la combinaison de PEDF et DHA s'est avérée favorable à la régénération du nerf de la cornée après une chirurgie réfractive, et cette combinaison pourrait être ainsi utilisée pour empêcher les complications d'une chirurgie réfractive et certaines maladies, par exemple la kératite neurotrophique due au virus de l'herpès.

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