Anti-inflammatory effects and corresponding mechanisms of cirsimaritin extracted from Cirsium japonicum var. maackii Maxim.
Bioorg Med Chem Lett
; 27(14): 3076-3080, 2017 07 15.
Article
in En
| MEDLINE
| ID: mdl-28554870
ABSTRACT
In this study, we investigated the anti-inflammatory effects and mechanisms of cirsimaritin isolated from an ethanol extract of the aerial parts of Cirsium japonicum var. maackii Maxim. using RAW264.7 cells. The extract and its flavonoid cirsimaritin inhibited nitric oxide (NO) production and inducible nitric oxide synthase expression in RAW264.7 cells. Cirsimaritin inhibited interleukin-6, tumor necrosis factor-α, and NO production in a concentration-dependent manner in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. From a western blot study, pretreatment with cirsimaritin inhibited phosphorylation/degradation of IκBα and phosphorylation of Akt in LPS-stimulated RAW264.7 cells. Moreover, cirsimaritin suppressed activation of LPS-induced transcription factors, such as c-fos and signal transducer and activator of transcription 3 (STAT3), in RAW264.7 cells. Collectively, these results show that cirsimaritin possesses anti-inflammatory activity, which is regulated by inhibition of c-fos and STAT3 phosphorylation in RAW264.7 cells.
Key words
Full text:
1
Database:
MEDLINE
Main subject:
Plant Extracts
/
Cirsium
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Flavones
/
Anti-Inflammatory Agents
Limits:
Animals
Language:
En
Journal:
Bioorg Med Chem Lett
Journal subject:
BIOQUIMICA
/
QUIMICA
Year:
2017
Type:
Article