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XB-ART-41365
Dev Biol 2010 May 17;1331:20-7. doi: 10.1016/j.brainres.2010.03.041.
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Effects of protostane-type triterpenoids on the 5-HT3A receptor-mediated ion current in Xenopus oocytes.

Lee JH, Lee YJ, Kang SW, Kim Y, Shin M, Hong M, Seo EK, Kim SH, Nah SY, Bae H.


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Alisol derivatives are unique protostane-type triterpenoid compounds that are isolated from Alismatis rhizoma, which is a well-known traditional medicine in East Asia. In the present study, we investigated the effects of protostane-type triterpenoids (AA, Alisol A; AB, Alisol B; AB-ac, Alisol B 23-acetate; AC-ac, Alisol C 23-aceteate) on 5-HT-induced currents mediated by the human 5-HT(3)A receptor expressed in Xenopus laevis oocytes. Co-treatment with triterpenoids regulated the 5-HT-induced inward peak current in a concentration-dependent and reversible manner. In addition, regulation of I(5-HT) by triterpenoids occurred in a non-competitive manner. Taken together, these results indicate that triterpenoids may regulate the 5-HT(3)A receptors that are expressed in Xenopus oocytes. Furthermore, this regulation of the ligand-gated ion channel activity by triterpenoids may be one of the pharmacological actions of Alismatis rhizoma.

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