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  • Title: Immunoconfocal localization of gelatinase B expressed by migrating intrastromal epithelial cells after deep annular excimer keratectomy.
    Author: Maeda M, Vanlandingham BD, Ye H, Lu PC, Azar DT.
    Journal: Curr Eye Res; 1998 Aug; 17(8):836-43. PubMed ID: 9724000.
    Abstract:
    PURPOSE: Intrastromal epithelial migration occurs following deep excimer annular keratectomy. Our purpose is to determine the localization of gelatinase B expression and its relationship to migrating intrastromal epithelial cells following deep annular excimer keratectomy. METHODS: Rabbit corneas were treated with deep annular ablation and harvested 3, 5, 7 and 14 days following surgery. Histological examination was performed. Confocal microscopy was used to determine the time and the pattern of gelatinase B expression. This was compared to AE-5, vimentin, and alpha-smooth muscle actin immunolocalization. RESULTS: Histologic examination revealed islands of epithelial cells within the corneal stroma after deep annular excimer ablation, whereas eyes treated with superficial annular keratectomy did not show intrastromal epithelial migration. Immunoconfocal microscopy using monoclonal anti-matrix metalloproteinase-9 (MMP-9) antibody demonstrated the presence of gelatinase B at the outer borders of the intrastromal epithelial islands following deep annular excimer keratectomy. CONCLUSION: Gelatinase B may be involved in the process of intrastromal epithelial migration following deep annular excimer keratectomy.
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