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Abstract Title:

Eicosapentaenoic acid suppresses ocular inflammation in endotoxin-induced uveitis.

Abstract Source:

Mol Vis. 2010;16:1382-8. Epub 2010 Jul 17. PMID: 20664801

Abstract Author(s):

Misa Suzuki, Kousuke Noda, Shunsuke Kubota, Manabu Hirasawa, Yoko Ozawa, Kazuo Tsubota, Nobuhisa Mizuki, Susumu Ishida

Article Affiliation:

Department of Ophthalmology and Visual Science, Yokohama City University Graduate School of Medicine, Yokohama, Japan.

Abstract:

PURPOSE: To investigate the effect of eicosapentaenoic acid (EPA) on acute ocular inflammation in an animal model of endotoxin-induced uveitis (EIU). METHODS: C57Bl/6 mice (6-week-old males) were orally treated with EPA at a dose of 50 mg/kg/day for 5 days. EIU was then induced in the animals by intraperitoneal injection of 160 microg lipopolysaccharide (LPS). Twenty-four hours after LPS injection, leukocyte adhesion to the retinal vasculature was evaluated by the concanavalin A lectin perfusion-labeling technique, and leukocyte infiltration into the vitreous cavity was quantified. Furthermore, the protein levels of monocyte chemotactic protein (MCP)-1, interleukin (IL)-6, intercellular adhesion molecule-1 and phospholyrated nuclear factor (NF)-kappaB p65 in the retina and retinal pigment epithelium (RPE)-choroid complex were examined by enzyme-linked immunosorbent assay (ELISA). RESULTS: At 24 h after LPS injection, the EIU animals treated with oral EPA administration showed a significant decrease in leukocyte adhesion to the retinal vessels by 43.4% (p<0.01) and leukocyte infiltration into the vitreous cavity by 49.2% (p<0.05). In addition, EPA significantly reduced the protein levels of MCP-1 and IL-6 in the retina and the RPE-choroid complex. Furthermore, phosphorylation of NF-kappaB was suppressed by EPA treatment. CONCLUSIONS: Our data suggest that EPA inhibits multiple inflammatory molecules in vivo. EPA may become a novel strategy in the prevention and/or treatment of ocular inflammatory diseases.

Study Type : Animal Study

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Sayer Ji
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