Abstract
The inhibitory effects of six sesquiterpene lactones (1-6) isolated from Artemisia austroyunnanensis Ling & Y. R. Ling were studied on the LPS-induced inflammatory mediator production in RAW264.7 cells. The results showed they can decrease the level of ROS in a concentration-dependent response. The compounds down-regulate the expression of iNOS and COX-2 and a series of classical inflammatory factors, including TNF-α, IL-1β, IL-6 and IL-10. These effects can be partially explained by the supression of the phosphorylation of NF-κB. Additionally, the relationship between their structures and inflammatory factors was analyzed and discussed.
Keywords:
Anti-inflammatory activity; Artemisia austroyunnanensis; NF-κB regulation; Sesquiterpene lactone; iNOS inhibition.
MeSH terms
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Animals
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Anti-Inflammatory Agents, Non-Steroidal / chemistry
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Anti-Inflammatory Agents, Non-Steroidal / pharmacology
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Artemisia / chemistry*
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Cyclooxygenase 2 / metabolism*
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Cytokines / metabolism*
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Dose-Response Relationship, Drug
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Drug Evaluation, Preclinical
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Lactones / chemistry
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Lipopolysaccharides / toxicity
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Mice
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NF-kappa B / metabolism
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Nitric Oxide Synthase Type II / metabolism*
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RAW 264.7 Cells
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Reactive Oxygen Species / metabolism
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Sesquiterpenes / administration & dosage
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Sesquiterpenes / chemistry
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Sesquiterpenes / pharmacology*
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Tumor Necrosis Factor-alpha / metabolism
Substances
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Anti-Inflammatory Agents, Non-Steroidal
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Cytokines
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Lactones
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Lipopolysaccharides
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NF-kappa B
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Reactive Oxygen Species
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Sesquiterpenes
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Tumor Necrosis Factor-alpha
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Nitric Oxide Synthase Type II
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Nos2 protein, mouse
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Ptgs2 protein, mouse
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Cyclooxygenase 2