, Volume 39, Issue 1, pp 96–106 | Cite as

Quercetin Protects Mice from ConA-Induced Hepatitis by Inhibiting HMGB1-TLR Expression and Down-Regulating the Nuclear Factor Kappa B Pathway

  • Xi Li
  • Hong-chun Liu
  • Qun-yan Yao
  • Bei-li Xu
  • Shun-cai Zhang
  • Chuan-tao Tu


The dietary flavonoid quercetin has hepatoprotective effects. We analyzed the effects of quercetin on concanavalin A (ConA)-induced hepatitis in mice and its underlying molecular mechanisms of action. Mice were administered quercetin (50 mg/kg body weight, i.p.) or vehicle 30 min before intravenous administration of ConA. Quercetin pretreatment significantly reduced the ConA-induced elevations in plasma aminotransferase concentrations and liver necrosis, as well as reducing serum concentrations of the pro-inflammatory cytokines tumor necrosis factor (TNF)-α, interferon-γ, and interleukin-4. Quercetin pretreatment also reduced expression of high-mobility group box 1 protein (HMGB1) and toll-like receptor (TLR)-2 and TLR-4 messenger RNA (mRNA) and protein in liver tissues. Quercetin pretreatment significantly inhibited degradation of inhibitory kappa B alpha and modulated ConA-induced nuclear translocation in the liver of nuclear factor kappa B (NF-κB) p65. These results demonstrate that quercetin protects against ConA-mediated hepatitis in mice by attenuating the HMGB1–TLRs–NF-κB signaling pathway.


quercetin hepatitis inflammation nuclear factor κB high-mobility group box 1 protein toll-like receptor 



This work was supported in part by the National Science Foundation of China (grant number 81170398) and the National Clinical Key Special Subject of China.

Conflict of Interest

The authors declare that there are no conflicts of interests regarding publication of this article.


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Xi Li
    • 1
    • 2
  • Hong-chun Liu
    • 1
    • 3
  • Qun-yan Yao
    • 1
    • 3
  • Bei-li Xu
    • 1
    • 3
  • Shun-cai Zhang
    • 1
    • 3
  • Chuan-tao Tu
    • 1
    • 3
  1. 1.Department of Gastroenterology and Hepatology, Zhongshan HospitalFudan UniversityShanghaiChina
  2. 2.Department of Geriatrics, Zhongshan HospitalFudan UniversityShanghaiChina
  3. 3.Shanghai Institute of Liver DiseasesShanghaiChina

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