کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5555295 | 1559740 | 2017 | 10 صفحه PDF | دانلود رایگان |
- 3, 4-dihydroxybenzalacetone (DBL) from Phellinus linteus attenuates the inflammatory effects of acute lung injury.
- The mechanism was through DBL inhibiting TLR4, PI3K/AKT expressions, and then suppressing MAPKs and NFκB activation.
- DBL inhibited activities of MMP-2 and MMP-9 in BALF and decreased these two protein expressions in lung tissues.
- DBL decreased oxidative stress via upregulating anti-oxidative enzymes such as SOD, catalase, and GPx.
3, 4-Dihydroxybenzalacetone (DBL) is a constituent of Phellinus linteus. This study demonstrated the protective effect of DBL on lipopolysaccharide (LPS)-induced acute lung injuries in mice.Pretreatment with DBL significantly improved LPS-induced histological alterations in lung tissues. In addition, DBL markedly reduced the total cell number, the leukocytes, the protein concentrations, and decreased the release of nitrite, tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-6 and the activities of matrix metalloproteinase (MMP)-2 and -9 in the bronchoalveolar lavage fluid. DBL also inhibited the W/D ratio and myeloperoxidase activity in the lung tissues. Western blot analysis indicated DBL efficiently blocked the protein expressions of inducible nitric oxide synthase, cyclooxygenase-2, MMP-2, MMP-9, and the phosphorylation of mitogen-activated protein kinase (MAPK), phosphoinositide-3-kinase (PI3K), AKT, Toll-like receptor 4 (TLR4) and nuclear factor (NF)-κB. Moreover, DBL enhanced the expression of anti-oxidant proteins, such as superoxide dismutase (SOD), catalase and glutathione peroxidase (GPx). Based on our results, DBL might be a potential target for attenuating tissue oxidative injuries and nonspecific pulmonary inflammation.
Journal: International Immunopharmacology - Volume 50, September 2017, Pages 77-86