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Anti-Inflammatory Activity Comparison among Scropoliosides-Catalpol Derivatives with 6-O-Substituted Cinnamyl
Tiantian Zhu1,2, Liuqiang Zhang2, Shuang Ling3
1Murad Research Institute for Modernized Chinese Medicine, Shanghai University of Traditional Chinese Medicine. 04100217@163.com.
Abstract:
We have previously shown that scropolioside B has higher anti-inflammatory activity than catalpol does after the inhibition of nuclear factor (NF)-κB activity and IL-1β expression, maturation, and secretion. Various scropoliosides were extracted, isolated, and purified from Scrophularia dentata Royle ex Benth. We then compared their anti-inflammatory activities against LPS-induced NF-κB activity, cytokines mRNA expression, IL-1β secretion, and cyclooxygenase-2 activity. The inhibitory effects of the scropoliosides varied depending on whether the 6-O-substituted cinnamyl moiety was linked to C'' 2-OH, C''3-OH, or C''4-OH, and on the number of moieties linked, which is closely related to the enhancement of antiinflammatory activity. Among these compounds, scropolioside B had the strongest antiinflammatory effects.
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