Journal
EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE
Volume 2017, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2017/2495496
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Funding
- Natural Science Foundation of Jilin [20150520050JH]
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Inflammation is a complex response to diverse pathological conditions, resulting in negative rather than protective effects when uncontrolled. Orientin (Ori), a flavonoid component isolated from natural plants, possesses abundant properties. Thus, we aimed to discover the potential therapeutic effects of orientin on lipopolysaccharide-(LPS-) induced inflammation in RAW 264.7 cells and the underlying mechanisms. In our studies, we evaluated the effects of Ori on proinflammatory mediator production stimulated by LPS, including tumor necrosis factor-(TNF-)alpha, interleukin-(IL-) 6, IL-18, and IL-1 beta, along with prostaglandin E-2 (PGE(2)) andNO. Our data indicated that orientin dramatically inhibited the levels of these mediators. Consistent with these results, the expression levels of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) were also reduced. Further study demonstrated that such inhibitory effects of Ori were due to suppression of the nuclear factor-kappa B (NF-kappa B) pathway and nucleotide-binding domain-(NOD-) like receptor protein 3 (NLRP3) inflammasome activation, whichmay contribute to its anti-inflammatory effects. Together, these findings show that Ori may be an effective candidate for ameliorating LPS-induced inflammatory responses.
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