International Journal of Medical Sciences

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24 September 2018

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Int J Med Sci 2018; 15(8):758-764. doi:10.7150/ijms.24834

Research Paper

Anti-inflammatory Effects of Sinomenium Acutum Extract On Endotoxin-induced Uveitis in Lewis Rats

Tae Wan Kim1,2, Jeong Mo Han2, Young Keun Han1✉, Hokyung Chung1

1. Department of Ophthalmology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
2. Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea

Abstract

Purpose: Recent studies have reported the anti-inflammatory effect of Sinomenium acutum. We investigated the anti-inflammatory effect of sinomenine on endotoxin-induced uveitis in a rat model.

Methods: Endotoxin-induced uveitis was induced in rat by lipopolysaccharide (LPS) immunization. Sinomenine (50mg/kg and 100mg/kg) was administered at 30 minutes before, 6 hours and 12 hours after LPS immunization. Clinical and histological severity was evaluated. Protein concentration and levels of tumor necrosis factor (TNF)-α and prostaglandin (PG)-E2 in aqueous humor were measured. Expression of activated Nuclear factor (NF)-κB p65 in ciliary body was also observed.

Results: Clinical and histological severities were significantly milder in sinomenine-treated rat than in controls (P < 0.001). Sinomenine suppressed protein leakage and down-regulated the production of TNF-α and PG-E2 in a dose-dependent manner. Sinomenine treatment suppressed the translocation of the NF-κB p65 subunit into the nuclei.

Conclusion: Systemic administration of sinomenine suppressed the inflammation of ocular tissues. These findings suggest that sinomenine could be a novel therapeutic agent for the control of endogenous ocular inflammatory disease.

Keywords: endotoxin-induced uveitis, NF-κB, PG-E2, Sinomenium acutum, TNF-α

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How to cite this article:
Kim TW, Han JM, Han YK, Chung H. Anti-inflammatory Effects of Sinomenium Acutum Extract On Endotoxin-induced Uveitis in Lewis Rats. Int J Med Sci 2018; 15(8):758-764. doi:10.7150/ijms.24834. Available from http://www.medsci.org/v15p0758.htm