Tetrandrine suppresses lipopolysaccharide-induced microglial activation by inhibiting NF-[kappa]B pathway
Microglial activation has been implicated in many neurological diseases. In this study, we examined the effects of tetrandrine (TET), a major pharmacologically-active compound of Chinese herb Stephania tetrandra S Moore on microglial activation. The microglia pretreated with or without TET were acti...
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Published in | Acta pharmacologica Sinica Vol. 29; no. 2; p. 245 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Shanghai
Nature Publishing Group
01.02.2008
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Abstract | Microglial activation has been implicated in many neurological diseases. In this study, we examined the effects of tetrandrine (TET), a major pharmacologically-active compound of Chinese herb Stephania tetrandra S Moore on microglial activation. The microglia pretreated with or without TET were activated by lipopolysaccharide (LPS) in vitro. Nitric oxide (NO) release, superoxide anion (O2-) generation, as well as TNF-alpha and interleukin-6 (IL-6) production by microglia were measured afterwards. Electrophoretic mobility shift assay was performed to determine whether NF-kappaB activity in microglia was affected by TET treatment. We found that TET inhibited the LPS-induced activation of microglia by decreasing the production of NO and O2-, consequently affecting the release of TNF-alphaand IL-6 in LPS-induced microglial activation. Such suppressive effect was accompanied by inhibiting transcription factor NF-kappaB activation. Our results suggest that TET might modulate LPS-induced microglial activation by inhibiting the NF-kappaB-mediated release of inflammatory factors. |
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AbstractList | Microglial activation has been implicated in many neurological diseases. In this study, we examined the effects of tetrandrine (TET), a major pharmacologically-active compound of Chinese herb Stephania tetrandra S Moore on microglial activation. The microglia pretreated with or without TET were activated by lipopolysaccharide (LPS) in vitro. Nitric oxide (NO) release, superoxide anion (O2-) generation, as well as TNF-alpha and interleukin-6 (IL-6) production by microglia were measured afterwards. Electrophoretic mobility shift assay was performed to determine whether NF-kappaB activity in microglia was affected by TET treatment. We found that TET inhibited the LPS-induced activation of microglia by decreasing the production of NO and O2-, consequently affecting the release of TNF-alphaand IL-6 in LPS-induced microglial activation. Such suppressive effect was accompanied by inhibiting transcription factor NF-kappaB activation. Our results suggest that TET might modulate LPS-induced microglial activation by inhibiting the NF-kappaB-mediated release of inflammatory factors. |
Author | Xiao, Bao-guo Feng, De-chun Wang, Ying Xue, Yang Xu, Ling-yun |
Author_xml | – sequence: 1 givenname: Yang surname: Xue fullname: Xue, Yang – sequence: 2 givenname: Ying surname: Wang fullname: Wang, Ying – sequence: 3 givenname: De-chun surname: Feng fullname: Feng, De-chun – sequence: 4 givenname: Bao-guo surname: Xiao fullname: Xiao, Bao-guo – sequence: 5 givenname: Ling-yun surname: Xu fullname: Xu, Ling-yun |
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Copyright | Copyright Nature Publishing Group Feb 2008 |
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Title | Tetrandrine suppresses lipopolysaccharide-induced microglial activation by inhibiting NF-[kappa]B pathway |
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