alexa Neuroprotectin D1 reduces the severity of herpes simplex virus-induced corneal immunopathology.
Medicine

Medicine

Journal of Gerontology & Geriatric Research

Author(s): Rajasagi NK, Reddy PB, Mulik S, Gjorstrup P, Rouse BT

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Abstract PURPOSE: Neuroprotectin D1 (NPD1) is an anti-inflammatory and proresolving lipid mediator biosynthesized from the omega-3-polyunsaturated fatty acid docosahexaenoic acid (DHA). The purpose of this study is to test the therapeutic potential of NPD1 for the treatment of herpes simplex virus (HSV)-induced stromal keratitis (SK) using a mouse model. METHODS: C57BL/6 mice were infected ocularly with HSV-1 strain RE. Infected animals were treated topically with methyl ester prodrug NPD1 (300 ng/eye, 5-μL drop). Development of SK lesions, infiltration of inflammatory cells into the cornea, and production of proinflammatory cytokines, chemokines, and angiogenic factors were compared to untreated animals using slit-lamp biomicroscopy, flow cytometry, ELISA, and quantitative PCR (qPCR). RESULTS: Topical administration of NPD1 resulted in a significant reduction in the severity and incidence of SK, as well as the extent of corneal neovascularization in the NPD1-treated animals compared to their untreated counterparts. Infiltration of fewer neutrophils and pathogenic CD4⁺ T cells into the cornea, along with a lower number of cells that could be induced ex vivo to produce IFN-γ and IL-17, occurred with NPD1 treatment. Additionally, treatment with NPD1 diminished the production of proinflammatory cytokines, chemokines, and angiogenic factors, such as IL-6, CXCL1, CXCL-10, CCL-20, VEGF-A, MMP-2, and MMP-9 in the corneas of infected animals. Importantly, treatment with NPD1 increased the production of the anti-inflammatory cytokine, IL-10. CONCLUSIONS: Our novel findings demonstrate that NPD1 treatment could represent a valuable therapeutic approach to control SK lesions.
This article was published in Invest Ophthalmol Vis Sci and referenced in Journal of Gerontology & Geriatric Research

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