Ginsenoside Rb1 inhibits cell activation and liver fibrosis in rat hepatic stellate cells

Yu Ting Lo, Ya-Hui Tsai, Shu Ju Wu, Jiun Rong Chen, Jane C J Chao

研究成果: 雜誌貢獻文章同行評審

40 引文 斯高帕斯(Scopus)

摘要

Chronic hepatitis/cirrhosis is the eighth leading cause of death in Taiwan. Excess accumulated extracellular matrix produced by activated hepatic stellate cells (HSCs) is the major cause of liver fibrosis. Ginsenoside Rb1, the most active compound purified from ginseng, has been considered to be hepatoprotective. This study investigated the effects of ginsenoside Rb1 (98.8% purity) on activation, proliferation, and profibrotic factors in rat HSC-T6 cells under H 2O 2 oxidative stress. Rat HSC-T6 cells were activated by 10nM H 2O 2 and then incubated with different concentrations of ginsenoside Rb1 (5, 10, 20, 40, and 80μg/mL) for 24 hours. Medium containing 0.08% dimethyl sulfoxide or 5mM N-acetyl-l-cysteine was used as a negative or positive control, respectively. The results showed that ginsenoside Rb1 at 5-40 μg/mL significantly reduced α-smooth muscle actin levels and at 5-80μg/mL inhibited cell proliferation in HSC-T6 cells after induction with H 2O 2 (P<.05). Collagen secreted by HSC-T6 cells was decreased by ginsenoside Rb1 at 5-80 μg/mL (P<.05). Protein expression of transforming growth factor-β1 (TGF-β1), matrix metalloproteinase (MMP)-2, and tissue inhibitor of metalloproteinase (TIMP)-1 was suppressed by ginsenoside Rb1 at 10-80μg/mL (P<.05). In addition, mRNA expression of type I and III collagen, TGF-β1, and TIMP-1 was inhibited by ginsenoside Rb1 (10 and 80μg/mL) (P<.05). Therefore, ginsenoside Rb1 exerted an antifibrotic effect on HSCs by inhibiting activation, proliferation, and expression of collagen, TGF-β1, MMP-2, and TIMP-1.

原文英語
頁(從 - 到)1135-1143
頁數9
期刊Journal of Medicinal Food
14
發行號10
DOIs
出版狀態已發佈 - 12月 1 2011

ASJC Scopus subject areas

  • 醫藥(雜項)
  • 營養與營養學

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