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  • Title: Cilostazol and enzymatically modified isoquercitrin attenuate experimental colitis and colon cancer in mice by inhibiting cell proliferation and inflammation.
    Author: Kangawa Y, Yoshida T, Maruyama K, Okamoto M, Kihara T, Nakamura M, Ochiai M, Hippo Y, Hayashi SM, Shibutani M.
    Journal: Food Chem Toxicol; 2017 Feb; 100():103-114. PubMed ID: 27989839.
    Abstract:
    We previously reported the anti-inflammatory effects of cilostazol, a selective inhibitor of phosphodiesterase 3, and two antioxidants, enzymatically modified isoquercitrin and α-lipoic acid in a dextran sodium sulphate-induced colitis mouse model. We further examined the chemopreventive effects of these substances in a murine azoxymethane/dextran sodium sulphate -induced colorectal carcinoma model and compared the effects with those of the well-known anticancer natural plant pigment, anthocyanin. In addition, the effects on cell proliferation activity were evaluated in colon cancer cell lines and mucosal epithelial cells in a model of acute dextran sodium sulphate-induced colitis. Cilostazol and enzymatically modified isoquercitrin improved the outcome of azoxymethane/dextran sodium sulphate-induced colorectal cancer along with anthocyanin though inhibiting inflammation and cell proliferation, but the effect of α-lipoic acid was minimal. Inhibition of cell proliferation by cilostazol was confirmed in vitro. In the acute dextran sodium sulphate-induced colitis model, cilostazol and enzymatically modified isoquercitrin prevented the decrease in epithelial proliferative cells. These results indicate that cilostazol and enzymatically modified isoquercitrin first exhibited an anti-dextran sodium sulphate effect at the initial stage of colitis and then showed antitumour effects throughout subsequent inflammation-related cancer developmental stages.
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