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Article Open Access

Silymarin suppresses hepatic stellate cell activation in a dietary rat model of non-alcoholic steatohepatitis: Αnalysis of isolated hepatic stellate cells

  • Authors:
    • Mina Kim
    • Su-Geun Yang
    • Joon Mi Kim
    • Jin-Woo Lee
    • Young Soo Kim
    • Jung Il Lee
  • View Affiliations / Copyright

    Affiliations: Department of Internal Medicine, Division of Gastroenterology, Inha University School of Medicine, Jung-Gu, Incheon, Republic of Korea, Utah-Inha DDS and Advanced Therapeutics Research Center, Yeonsu-Gu, Incheon, Republic of Korea, Department of Pathology, Inha University School of Medicine, Jung-Gu, Incheon, Republic of Korea
    Copyright: © Kim et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 3.0].
  • Pages: 473-479
    |
    Published online on: June 14, 2012
       https://doi.org/10.3892/ijmm.2012.1029
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Abstract

Non-alcoholic steatohepatitis (NASH) is characterized by hepatocellular injury and initial fibrosis severity has been suggested as an important prognostic factor of NASH. Silymarin was reported to improve carbon tetrachloride-induced liver fibrosis and reduce the activation of hepatic stellate cells (HSC). We investigated whether silymarin could suppress the activation of HSCs in NASH induced by methionine- and choline-deficient (MCD) diet fed to insulin-resistant rats. NASH was induced by feeding MCD diet to obese diabetic Otsuka Long-Evans Tokushima Fatty (OLETF) rats. Non-diabetic Long-Evans Tokushima Otsuka (LETO) rats were fed with standard chow and served as the control. OLETF rats were fed on either standard laboratory chow, or MCD diet or MCD diet mixed with silymarin. Histological analysis of the liver showed improved non-alcoholic fatty liver disease (NAFLD) activity score in silymarin-fed MCD-induced NASH. Silymarin reduced the activation of HSCs, evaluated by counting α-smooth muscle actin (SMA)-positive cells and measuring α-SMA mRNA expression in the liver lysates as well as in HSCs isolated from the experimental animals. Although silymarin decreased α1-procollagen mRNA expression in isolated HSCs, the anti-fibrogenic effect of silymarin was not prominent so as to show significant difference under histological analysis. Silymarin increased the nuclear translocation of nuclear factor erythroid 2-related factor 2 (Nrf2) and decreased tumor necrosis factor (TNF)-α mRNA expression in the liver. Our study suggested that the possible protective effect of silymarin in diet induced NASH by suppressing the activation of HSCs and disturbing the role of the inflammatory cytokine TNF-α.
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Copy and paste a formatted citation
Spandidos Publications style
Kim M, Yang S, Kim JM, Lee J, Kim YS and Lee JI: Silymarin suppresses hepatic stellate cell activation in a dietary rat model of non-alcoholic steatohepatitis: Αnalysis of isolated hepatic stellate cells. Int J Mol Med 30: 473-479, 2012.
APA
Kim, M., Yang, S., Kim, J.M., Lee, J., Kim, Y.S., & Lee, J.I. (2012). Silymarin suppresses hepatic stellate cell activation in a dietary rat model of non-alcoholic steatohepatitis: Αnalysis of isolated hepatic stellate cells. International Journal of Molecular Medicine, 30, 473-479. https://doi.org/10.3892/ijmm.2012.1029
MLA
Kim, M., Yang, S., Kim, J. M., Lee, J., Kim, Y. S., Lee, J. I."Silymarin suppresses hepatic stellate cell activation in a dietary rat model of non-alcoholic steatohepatitis: Αnalysis of isolated hepatic stellate cells". International Journal of Molecular Medicine 30.3 (2012): 473-479.
Chicago
Kim, M., Yang, S., Kim, J. M., Lee, J., Kim, Y. S., Lee, J. I."Silymarin suppresses hepatic stellate cell activation in a dietary rat model of non-alcoholic steatohepatitis: Αnalysis of isolated hepatic stellate cells". International Journal of Molecular Medicine 30, no. 3 (2012): 473-479. https://doi.org/10.3892/ijmm.2012.1029
Copy and paste a formatted citation
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Spandidos Publications style
Kim M, Yang S, Kim JM, Lee J, Kim YS and Lee JI: Silymarin suppresses hepatic stellate cell activation in a dietary rat model of non-alcoholic steatohepatitis: Αnalysis of isolated hepatic stellate cells. Int J Mol Med 30: 473-479, 2012.
APA
Kim, M., Yang, S., Kim, J.M., Lee, J., Kim, Y.S., & Lee, J.I. (2012). Silymarin suppresses hepatic stellate cell activation in a dietary rat model of non-alcoholic steatohepatitis: Αnalysis of isolated hepatic stellate cells. International Journal of Molecular Medicine, 30, 473-479. https://doi.org/10.3892/ijmm.2012.1029
MLA
Kim, M., Yang, S., Kim, J. M., Lee, J., Kim, Y. S., Lee, J. I."Silymarin suppresses hepatic stellate cell activation in a dietary rat model of non-alcoholic steatohepatitis: Αnalysis of isolated hepatic stellate cells". International Journal of Molecular Medicine 30.3 (2012): 473-479.
Chicago
Kim, M., Yang, S., Kim, J. M., Lee, J., Kim, Y. S., Lee, J. I."Silymarin suppresses hepatic stellate cell activation in a dietary rat model of non-alcoholic steatohepatitis: Αnalysis of isolated hepatic stellate cells". International Journal of Molecular Medicine 30, no. 3 (2012): 473-479. https://doi.org/10.3892/ijmm.2012.1029
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