Ethanol extract from Artemisia vestita, a traditional Tibetan medicine, exerts anti-sepsis action through down-regulating the MAPK and NF-κB pathways
Artemisia vestita Wall., a traditional Tibetan medicine, has wide clinical application for inflammatory diseases. However, its molecular mechanism of anti-inflammatory effect is poorly understood. In the present study, we investigated the anti-inflammatory activity and under-lying mechanism of the e...
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Published in | International journal of molecular medicine Vol. 17; no. 5; pp. 957 - 962 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
D.A. Spandidos
01.05.2006
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Online Access | Get full text |
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Summary: | Artemisia vestita Wall., a traditional Tibetan medicine, has wide clinical
application for inflammatory diseases. However, its molecular mechanism of anti-inflammatory
effect is poorly understood. In the present study, we investigated the anti-inflammatory
activity and under-lying mechanism of the ethanol extract from Artemisia vestita
(AV-ext) on lipopolysaccharide (LPS)-induced sepsis. Pretreatment with AV-ext
significantly decreased the levels of tumor necrosis factor-α (TNF-α) in serum
and liver and lung tissues, and improved the survival of mice with experimental
sepsis. AV-ext also remarkably reduced the expression levels of TNF-α, interleukin-1β
and cyclooxygenase-2 in LPS-stimulated RAW 264.7 macrophages and dose dependently
suppressed the activation of mitogen-activated protein kinases (MAPKs), such as
p38, extracellular signal-regulated kinase (ERK1/2) and c-Jun NH2-terminal kinase
(JNK). Furthermore, pretreatment with AV-ext dose dependently inhibited the activation
of nuclear factor-κB (NF-κB), as well as the degradation and phosphorylation of
inhibitory κB (IκB) in LPS-activated RAW 264.7 macrophages. These results collectively
reveal that AV-ext inhibits TNF-α release from macrophages by suppressing MAPK
and NF-κB signaling pathways and suggest that AV-ext may be beneficial for the
treatment of endotoxin shock or sepsis. |
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ISSN: | 1107-3756 1791-244X |
DOI: | 10.3892/ijmm.17.5.957 |