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Silymarin Inhibits Morphological Changes in LPS-Stimulated Macrophages by Blocking NF-kappaB Pathway
The Korean Journal of Physiology and Pharmacology ; : 211-218, 2015.
Article in English | WPRIM | ID: wpr-728522
ABSTRACT
The present study showed that silymarin, a polyphenolic flavonoid isolated from milk thistle (Silybum marianum), inhibited lipopolysaccharide (LPS)-induced morphological changes in the mouse RAW264.7 macrophage cell line. We also showed that silymarin inhibited the nuclear translocation and transactivation activities of nuclear factor-kappa B (NF-kappaB), which is important for macrophage activation-associated changes in cell morphology and gene expression of inflammatory cytokines. BAY-11-7085, an NF-kappaB inhibitor, abrogated LPS-induced morphological changes and NO production, similar to silymarin. Treatment of RAW264.7 cells with silymarin also inhibited LPS-stimulated activation of mitogen-activated protein kinases (MAPKs). Collectively, these experiments demonstrated that silymarin inhibited LPS-induced morphological changes in the RAW264.7 mouse macrophage cell line. Our findings indicated that the most likely mechanism underlying this biological effect involved inhibition of the MAPK pathway and NF-kappaB activity. Inhibition of these activities by silymarin is a potentially useful strategy for the treatment of inflammation because of the critical roles played by MAPK and NF-kappaB in mediating inflammatory responses in macrophages.
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Full text: Available Index: WPRIM (Western Pacific) Main subject: Silymarin / Gene Expression / Transcriptional Activation / Cell Line / Cytokines / NF-kappa B / Negotiating / Milk Thistle / Mitogen-Activated Protein Kinases / Inflammation Limits: Animals Language: English Journal: The Korean Journal of Physiology and Pharmacology Year: 2015 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Silymarin / Gene Expression / Transcriptional Activation / Cell Line / Cytokines / NF-kappa B / Negotiating / Milk Thistle / Mitogen-Activated Protein Kinases / Inflammation Limits: Animals Language: English Journal: The Korean Journal of Physiology and Pharmacology Year: 2015 Type: Article