Kong Pengyu, Chen Guanghua, Jiang Anlong, Wang Yufu, Song Chengchao, Zhuang Jinpeng, Xi Chunyang, Wang Guangxi, Ji Ye, Yan Jinglong
Department of Orthopedics Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150001, China.
Oncotarget. 2016 Dec 13;7(50):83720-83726. doi: 10.18632/oncotarget.13360.
Sesamin, a bioactive component extracted from sesame, has been reported to exert anti-inflammatory and anti-oxidant effects. In this study, we evaluated the anti-inflammatory effects of sesamin on IL-1β-stimulated human osteoarthritis chondrocytes and investigated the possible mechanism. Results demonstrated that sesamin treatment significantly inhibited PGE2 and NO production induced by IL-1β. Sesamin inhibited MMP1, MMP3, and MMP13 production in IL-1β-stimulated chondrocytes. Sesamin also inhibited IL-1β-induced phosphorylation of NF-κB p65 and IκBα. Meanwhile, sesamin was found to up-regulate the expression of Nrf2 and HO-1. However, Nrf2 siRNA reversed the anti-inflammatory effects of sesamin. In conclusion, our results suggested that sesamin showed anti-inflammatory effects in IL-1β-stimulated chondrocytes by activating Nrf2 signaling pathway.
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