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  • Title: DBZ blocks LPS-induced monocyte activation and foam cell formation via inhibiting nuclear factor-ĸB.
    Author: Xie X, Wang S, Xiao L, Zhang J, Wang J, Liu J, Shen X, He D, Zheng X, Zhai Y.
    Journal: Cell Physiol Biochem; 2011; 28(4):649-62. PubMed ID: 22178877.
    Abstract:
    BACKGROUND/AIMS: It has been widely accepted that chronic inflammation plays important roles in the atherogenesis. Danshensu Bingpian Zhi (DBZ) is a novel synthetic compound derived from the traditional Chinese medicine (TCM) formula Fu Fang Dan Shen (FFDS), which is effective on atherosclerosis clinically. We hypothesized that DBZ possessed the anti-atherosclerosis potentials. Here, we examined the inhibitory effects of DBZ on LPS-induced monocyte activation and foam cell formation. METHODS: The effects of DBZ were assessed on LPS-induced inflammatory factors expression in monocyte/macrophage. Activation of NF-κB and AP-1 was analyzed by luciferase reporter assay and signaling pathway of NF-κB was investigated to elucidate mechanisms underlying DBZ mediated anti-inflammatory activity. Effects of DBZ on macrophage lipid accumulation were evaluated in native LDL and LPS co-incubated macrophages. RESULTS: DBZ inhibited LPS-induced inflammatory factors expression dose dependently in monocytes. DBZ inhibited NF-κB activation strongly and AP-1 slightly. DBZ suppressed the LPS-induced degradation of IκBα, thereby decreasing the translocation of p65 to nucleus. Furthermore, DBZ suppressed LPS-activated macrophages lipid accumulation, partly due to inhibiting the expression of LPS-induced aP2 and ADRP in macrophges. CONCLUSION: These results demonstrate that DBZ has potentials on anti-atherosclerosis by suppressing monocyte activation and foam cell formation.
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