Vegf165 delivered by fibrin sealant to reduce tissue necrosis

A - Human Necessities – 61 – K

Patent

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Details

A61K 38/57 (2006.01) A61K 38/18 (2006.01) A61K 38/36 (2006.01) A61K 38/48 (2006.01) A61P 17/02 (2006.01)

Patent

CA 2724527

The present application demonstrates the clinical potential of fibrin sealants to locally deliver growth factors to ischemic tissue. More particularly, it demonstrates that hydrogels such as Fibrin Sealants can be used to deliver VEGF165 to prevent tissue necrosis caused by hypoxia or ischemia. Specifically, a Fibrin Sealant (FS) was used to deliver VEGF165 to treat tissue necrosis in both a rodent dorsal flap model and a rodent epigastric flap model. Flaps treated with FS spiked with (rh)VEGF165 developed less necrotic tissue. In addition, immunohistological studies revealed a greater numbers of blood vessels (angiogenesis).

La présente invention démontre le potentiel clinique des colles de fibrine pour libérer localement des facteurs de croissance à du tissu ischémique. Linvention démontre plus particulièrement que les hydrogels, tels que les colles de fibrine, peuvent être utilisés pour libérer du VEGF165 pour prévenir la nécrose tissulaire provoquée par une hypoxie ou une ischémie. De manière spécifique, on a utilisé une colle de fibrine (CF) pour libérer du VEGF165 pour traiter une nécrose tissulaire à la fois chez un modèle de lambeau de peau dorsale de rongeur et chez un modèle de lambeau épigastrique de rongeur. Les lambeaux traités avec de la CF surchargée de (rh)VEGF165 ont développé moins de tissu nécrotique. De plus, les études immunohistologiques ont révélé un plus nombre de vaisseaux sanguins (angiogenèse).

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