European journal of ophthalmology · 2010
VEGF Trap(R1R2) suppresses experimental corneal angiogenesis.
СтатьяПоддержка NIH: внешняя программаПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод пока не подготовлен
Обработка статьи · этапы, ошибки и управление
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Oliveira Hailton B, Sakimoto Tohru, Javier Joel A D, Azar Dimitri T, Wiegand Stanley J, Jain Sandeep, Chang Jin-Hong
Аннотация
PURPOSE: To determine the effect of vascular endothelial growth factor (VEGF) TrapR1R2 on bFGF-induced experimental corneal neovascularization (NV).
METHODS: Control pellets or pellets containing 80 ng bFGF were surgically implanted into wild-type C57BL/6 and VEGF-LacZ mouse corneas. The corneas were photographed, harvested, and the percentage of corneal NV was calculated. The harvested corneas were evaluated for VEGF expression. VEGF-LacZ mice received tail vein injections of an endothelial-specific lectin after pellet implantation to determine the temporal and spatial relationship between VEGF expression and corneal NV. Intraperitoneal injections of VEGF TrapR1R2 or a human IgG Fc domain control protein were administered, and bFGF pellet-induced corneal NV was evaluated.
RESULTS: NV of the corneal stroma began on day 4 and was sustained through day 21 following bFGF pellet implantation. Progression of vascular endothelial cells correlated with increased VEGF-LacZ expression. Western blot analysis showed increased VEGF expression in the corneal NV zone. Following bFGF pellet implantation, the area of corneal NV in untreated controls was 1.05+/-0.12 mm2 and 1.53+/-0.27 mm2 at days 4 and 7, respectively. This was significantly greater than that of mice treated with VEGF Trap (0.24+/-0.11 mm2 and 0.35+/-0.16 mm2 at days 4 and 7, respectively; p<0.05).
CONCLUSIONS: Corneal keratocytes express VEGF after bFGF stimulation and bFGF-induced corneal NV is blocked by intraperitoneal VEGF TrapR1R2 administration. Systemic administration of VEGF TrapR1R2 may have potential therapeutic applications in the management of corneal NV.
METHODS: Control pellets or pellets containing 80 ng bFGF were surgically implanted into wild-type C57BL/6 and VEGF-LacZ mouse corneas. The corneas were photographed, harvested, and the percentage of corneal NV was calculated. The harvested corneas were evaluated for VEGF expression. VEGF-LacZ mice received tail vein injections of an endothelial-specific lectin after pellet implantation to determine the temporal and spatial relationship between VEGF expression and corneal NV. Intraperitoneal injections of VEGF TrapR1R2 or a human IgG Fc domain control protein were administered, and bFGF pellet-induced corneal NV was evaluated.
RESULTS: NV of the corneal stroma began on day 4 and was sustained through day 21 following bFGF pellet implantation. Progression of vascular endothelial cells correlated with increased VEGF-LacZ expression. Western blot analysis showed increased VEGF expression in the corneal NV zone. Following bFGF pellet implantation, the area of corneal NV in untreated controls was 1.05+/-0.12 mm2 and 1.53+/-0.27 mm2 at days 4 and 7, respectively. This was significantly greater than that of mice treated with VEGF Trap (0.24+/-0.11 mm2 and 0.35+/-0.16 mm2 at days 4 and 7, respectively; p<0.05).
CONCLUSIONS: Corneal keratocytes express VEGF after bFGF stimulation and bFGF-induced corneal NV is blocked by intraperitoneal VEGF TrapR1R2 administration. Systemic administration of VEGF TrapR1R2 may have potential therapeutic applications in the management of corneal NV.