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Inflammation‑associated damage may occur in any tissue following infection, exposure to toxins, following ischemia, and in allergic and auto‑immune reactions. Inflammation may also result from mast cell degranulation induced by the intracellular calcium concentration. The inflammatory process may be inhibited by compounds that affect mast cells. Bisdemethoxycurcumin [1,7‑bis(4‑hydroxyphenyl) hepta‑1,6‑diene‑3,5‑dione, BDCM] is the active component of turmeric. It has anticancer, antioxidant and antibacterial properties. To investigate the molecular mechanism associated with the anti‑inflammatory activity of BDCM, human mast cell line 1 (HMC‑1) cells were treated with phorbol‑12‑myristate‑13‑acetate (PMA) and calcium ionophore A23187 (A23187) to induce the inflammatory process. Various HMC‑1 cells were pretreated with BDCM prior to stimulation of inflammation. BDCM inhibited the inflammation‑triggered production of cytokines including interleukin (IL)‑6, IL‑8, and tumor necrosis factor (TNF)‑α. BDCM inhibition extended to the gene level. In activated HMC‑1 cells, phosphorylation levels of extracellular signal‑regulated kinase, c‑jun N‑terminal kinase and p38 mitogen‑activated protein kinase were decreased by treatment with BDCM. BDCM also inhibited nuclear factor‑(NF)‑κB activation and IκB degradation. In conclusion, BDCM suppresses the expression of TNF‑α, IL‑8, and IL‑6 by inhibiting the NF‑κB and mitogen activated protein kinase signaling pathways.

molecular medicine reports

MAPKs and NF‑κB pathway inhibitory effect of bisdemethoxycurcumin on phorbol‑12‑myristate‑13‑acetate and A23187‑induced inflammation in human mast cells