alexa Resolvin E1 (RX-10001) reduces corneal epithelial barrier disruption and protects against goblet cell loss in a murine model of dry eye.
Medicine

Medicine

Journal of Gerontology & Geriatric Research

Author(s): de Paiva CS, Schwartz CE, Gjrstrup P, Pflugfelder SC

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Abstract PURPOSE: Resolvin E1 (RvE1; RX-10001) belongs to a new class of endogenous immunoregulating mediators, originally identified as a metabolite of the omega-3 polyunsaturated fatty acid, eicosapentaenoic acid. Based on its proven efficacy in models of chronic inflammation, this study investigated the efficacy of resolvin E1 in a murine model of dry eye. METHODS: C57/B6 mice, aged 6 to 8 weeks, were treated with systemic scopolamine and exposed to air draft and low humidity for 16 hours/day for 5 days and allocated to the following groups: unexposed controls, disease controls, treatment with vehicle or RvE1 delivered topically as its methyl ester prodrug, RX-10005, to enhance corneal surface penetration. Treatment was initiated at the time of desiccating stress induction. Treatment efficacy was assessed by corneal permeability using Oregon Green Dextran and by conjunctival goblet cell density using periodic acid-Schiff reagent. RESULTS: RvE1 reduced the increase in corneal staining by 80\% compared with untreated disease controls. Goblet cell density was reduced by 20\% in disease controls but fully maintained in the group receiving RvE1. CONCLUSIONS: RvE1, delivered as its methyl ester prodrug, improved the outcome measures of corneal staining and goblet cell density in this murine model of dry eye, indicating the potential utility of endogenous resolvins and resolvin analogues in the treatment of dry eye. This article was published in Cornea and referenced in Journal of Gerontology & Geriatric Research

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