alexa Inhibition of corneal neovascularization by subconjunctival bevacizumab in an animal model.


Journal of Clinical & Experimental Ophthalmology

Author(s): Papathanassiou M, Theodossiadis PG, Liarakos VS, Rouvas A, GiamarellosBourboulis EJ,

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Abstract PURPOSE: To evaluate the effect of subconjunctival injection of bevacizumab on experimentally induced corneal neovascularization. DESIGN: Experimental animal study. METHODS: Twelve New Zealand white rabbits were involved, divided equally into four groups. Only one eye per rabbit was used. Topical instillation of 10 microl 5\% NaOH solution was used, under general anesthesia, to induce corneal neovascularization secondary to corneal alkali burn in groups 2, 3, and 4. A single dose of 3.75 mg (25 mg/ml) bevacizumab was injected subconjunctivally. Group 1 (control group 1) was neither cauterized nor treated. Group 2 (control group 2) received a sham injection of balanced salt solution on day 14. Group 3 was treated on day 14 (after corneal neovascularization had been established). Group 4 was treated on day 1. Digital photographs were obtained and analyzed during the entire 28-day procedure. The area of neovascularization and scarring were measured in terms of the percentage of corneal surface affected. RESULTS: On day 28, the difference of neovascularization between groups 2, 3, and 4 was found to be statistically significant at the .05 level (one-way analysis of variance [ANOVA]): group 4 (4.7\%+/-3.1\%).1, one-way ANOVA). No side effects were noted. CONCLUSIONS: Subconjunctival administration of bevacizumab inhibits corneal neovascularization effectively in the rabbit experimental model, especially if administered early. This article was published in Am J Ophthalmol and referenced in Journal of Clinical & Experimental Ophthalmology

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