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  • Title: Tetrandrine ameliorates dextran-sulfate-sodium-induced colitis in mice through inhibition of nuclear factor -kappaB activation.
    Author: Zhang DK, Cheng LN, Huang XL, Shi W, Xiang JY, Gan HT.
    Journal: Int J Colorectal Dis; 2009 Jan; 24(1):5-12. PubMed ID: 18685855.
    Abstract:
    BACKGROUND: Activation of nuclear factor (NF)-kappaB has been shown to play a critical role in the pathogenesis of ulcerative colitis (UC), and tetrandrine, a bisbenzylisoquinoline alkaloid isolated from the Chinese herb Radix Stephania tetrandra, has been demonstrated to be a potent inhibitor of NF-kappaB activation. The purpose of the study was to investigate effects of tetrandrine on experimental model of UC. MATERIALS AND METHODS: Tetrandrine was administered in experimental colitis induced by dextran sulfate sodium (DSS). The disease activity index (DAI) and histological score were observed. NF-kappaB DNA binding activity was assessed by electrophoretic mobility shift assay. The expression of tumor necrosis factor (TNF)-alpha and interleukin (IL)-1beta were measured by reverse transcription-polymerase chain reaction and enzyme-linked immunosorbent assay. RESULTS: A significant improvement was observed in DAI and histological score in mice with tetrandrine, and the increase in NF-kappaB DNA binding activity, myeloperoxidase activity, IL-1beta, and TNF-alpha in mice with DSS-induced colitis was significantly reduced following administration of tetrandrine. CONCLUSION: The administration of tetrandrine leads to an amelioration of DSS-induced colitis, suggesting administration of tetrandrine may provide a therapeutic approach for UC.
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