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Comparison of the Effects of Subconjunctival Injections of Bevacizumab and Interferon Alpha-2a on Corneal Angiogenesis in a Rat Model

Department of Ophthalmology, Sifa University, Izmir 35100, Turkey
Medicina 2018, 54(2), 16; https://doi.org/10.3390/medicina54020016
Received: 21 February 2018 / Revised: 9 April 2018 / Accepted: 13 April 2018 / Published: 16 April 2018
Background and objective: Corneal neovascularization (CNV) is a vision-threatening condition arising from various corneal diseases. The aim of this study is to compare the effectiveness of bevacizumab and interferon alpha-2a (IFNα-2a) treatment on corneal neovascularization. Materials and Methods: Twenty-four Wistar albino rats were used in this study. After cauterization of the cornea with a silver nitrate applicator stick, the control group received 0.1 mL saline solution, the second group received 0.1 mL IFNα-2a (IFNα-2a, 6 million international units [MIU]/0.5 mL), and the third group received 2.5 mg bevacizumab by subconjunctival injection. An additional injection was administered to each group on the fourth day. After one week, the corneal neovascularization rate and the longest neovascular sprout length were determined. Results: The neovascularization rate (saline 0.65 ± 0.05; IFNα-2a 0.62 ± 0.07; bevacizumab 0.42 ± 0.11) with bevacizumab was significantly lower, more than those with IFNα-2a and saline (p < 0.001 and p < 0.001). The longest neovascular sprout length (saline, 4.00 ± 0.6 mm; IFNα-2a, 3.63 ± 0.52 mm; bevacizumab, 2.81 ± 0.65 mm) with bevacizumab was significantly shorter than those with saline and IFNα-2a (p = 0.001 and p = 0.012). Conclusions: Subconjunctival IFNα-2a has limited efficacy in the treatment of corneal neovascularization. View Full-Text
Keywords: corneal neovascularization rate; corneal neovascular sprout length; bevacizumab; interferon alpha-2a corneal neovascularization rate; corneal neovascular sprout length; bevacizumab; interferon alpha-2a
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Bilgin, S. Comparison of the Effects of Subconjunctival Injections of Bevacizumab and Interferon Alpha-2a on Corneal Angiogenesis in a Rat Model. Medicina 2018, 54, 16.

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