期刊
INTERNATIONAL IMMUNOPHARMACOLOGY
卷 16, 期 4, 页码 475-480出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.intimp.2013.04.020
关键词
Shikonin; Lipopolysaccharide (LPS); Acute lung injury (ALI); Anti-inflammatory; Nuclear factor-kappaB (NF-kappa B)
资金
- National Natural Science Foundation of China [31272622, 3120195]
- Research Fund for the Doctoral Program of Higher Education of China [20110061130010, 20120061120098]
Shikonin, an analog of naphthoquinone pigments isolated from the root of Lithospermum etythrorhyzon, was recently reported to exert beneficial anti-inflammatory effects both in vivo and in vitro. The present study aimed to investigate the potential therapeutic effect of shikonin in a murine model of lipopolysaccharide (LPS)-induced acute lung injury (ALI). Dexamethasone was used as a positive control to evaluate the anti-inflammatory effect of shikonin in the study. Pretreatment with shikonin (intraperitoneal injection) significantly inhibited LPS-induced increases in the macrophage and neutrophil infiltration of lung tissues and markedly attenuated myeloperoxidase activity. Furthermore, shikonin significantly reduced the concentrations of TNF-alpha, IL-6 and IL-1 beta in bronchoalveolar lavage fluid induced by LPS. Compared with the LPS group, lung histopathologic changes were less pronounced in the shikonin-pretreated mice. Additionally, Western blotting results showed that shikonin efficiently decreased nuclear factor-kappaB (NF-kappa B) activation by inhibiting the degradation and phosphorylation of I kappa B alpha. These results suggest that shikonin exerts anti-inflammatory properties in LPS-mediated ALI, possibly through inhibition of the NF-kappa B signaling pathway, which mediates the expression of pro-inflammatory cytokines. Shikonin may be a potential agent for the prophylaxis of ALI. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据