Ya Zhao, Jianxing Liu, Chunping Liu, Xing Zeng, Xiong Li and Jin Zhao
P-coumaric acid (p-CA), which was widely found in nutritious plant foods, has various anti-inflammatory effects in vivo. In order to clarify the anti-inflammatory mechanisms, the effects on lipopolysaccharide (LPS)-stimulated inflammatory responses in RAW264.7 macrophage cells were examined by pretreated with P-CA (10-100 μg/ml). P-CA signiï¬?cantly inhibited iNOS, COX-2, IL-1β and TNF-α expression at mRNA and/or protein level. Furthermore, P-CA suppressed the phosphorylation of IκB and ERK1/2. The above results suggest that P-CA may inhibit the production of inflammatory cytokines induced by LPS through blocking NF-kB and MAPKs signaling pathways, which further support the anti-inflammatory and immunomodulatory potential of P-CA in different models of inflammation.
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