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Anti-vascular endothelial growth factor antibody limits vascular leakage and decreases subretinal fibrosis in a cynomolgus monkey choroidal neovascularization model.
https://gifu-pu.repo.nii.ac.jp/records/14146
https://gifu-pu.repo.nii.ac.jp/records/1414612400766-b869-40b4-b96e-bdb048987368
| Item type | 研究室原著論文(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-09-11 | |||||
| タイトル | ||||||
| タイトル | Anti-vascular endothelial growth factor antibody limits vascular leakage and decreases subretinal fibrosis in a cynomolgus monkey choroidal neovascularization model. | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 抄録 | ||||||
| 値 | Objective: This study was conducted to evaluate the effects of anti-vascular endothelial growth factor (VEGF) antibody (bevacizumab) on vascular leakage and fibrosis in a monkey choroidal neovascularization (CNV) model. The relationship between fibrotic tissue and subretinal hyper-reflective material (SHRM) in optical coherence tomography (OCT) images was also investigated. Methods: Experimental CNV was induced in male cynomolgus monkeys by laser photocoagulation. Intravitreal injection of bevacizumab at 0.5 mg/eye/dosing was initiated 2 weeks before or after laser irradiation and thereafter conducted intermittently at 2- or 3- week intervals. Fluorescein fundus angiography (FA) and OCT imaging were conducted weekly from 2 to 7 weeks after laser irradiation. CNV leakage was evaluated by an established grading method using FA images. To assess the fibrosis and scarring, Masson's trichrome specimens of each CNV lesion were prepared, and morphometric analysis was conducted using image analysis software. Results: The effects of bevacizumab on vascular leakage were shown using an established evaluation method. Morphometric analysis of Masson's trichrome-stained (MT) specimens revealed that collagen fiber synthesis was suppressed by bevacizumab pre-treatment (-29.2%) or post-treatment (-19.2%). SHRM was detected in OCT images in a monkey CNV model, and a significant correlation between the SHRM area in the OCT images and the collagen fiber area in the MT specimens was noted. Conclusion: In our established cynomolgus monkey CNV model, bevacizumab prevented blood leakage but could not completely suppress fibrosis. SHRM in the OCT images reflected retinal fibrous tissue in a laser-induced CNV monkey model. Our model might be useful for elucidating the pathology and development therapy for neovascularization or fibrosis. Keywords: Age-related macular degeneration; anti-VEGF therapy; choroidal neovascularization; cynomolgus monkey; fibrosis. |
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| 書誌情報 |
en : Current neurovascular research 発行日 2020-05-23 |
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| DOI | ||||||
| 値 | 10.2174/1567202617666200523163636 | |||||
