Antioxidative and hepatoprotective effects of magnolol on acetaminophen-induced liver damage in rats

  • Yung-Hsiang ChenEmail author
  • Feng-Yen Lin
  • Po-Len Liu
  • Yi-Tsau Huang
  • Jen-Hwey Chiu
  • Yi-Chun Chang
  • Kee-Ming Man
  • Chuang-Ye HongEmail author
  • Yen-Yi Ho
  • Ming-Tsung Lai
Research Articles Drug Actions


Acute liver failure (ALF), an often fatal condition characterized by massive hepatocyte necrosis, is frequently caused by drug poisoning, particularly with acetaminophen (N-acetyl-p-aminophenol/APAP). Hepatocyte necrosis is consecutive to glutathione (GSH) depletion and mitochondrial damage caused by reactive oxygen species (ROS) overproduction. Magnolol, one major phenolic constituent of Magnolia officinalis, have been known to exhibit potent antioxidative activity. In this study, the anti-hepatotoxic activity of magnolol on APAP-induced toxicity in the Sprague-Dawley rat liver was examined. After evaluating the changes of several biochemical parameters in serum, the levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), and lactate dehydrogenase (LDH) were elevated by APAP (500 mg/kg) intraperitoneal administration (8 and 24 h) and reduced by treatment with magnolol (0.5 h after APAP administration; 0.01, 0.1, and 1 μg/kg). Histological changes around the hepatic central vein, lipid peroxidation (thiobarbituric acid-reactive substance/TBARS), and GSH depletion in liver tissue induced by APAP were also recovered by magnolol treatment. The data show that oxidative stress followed by lipid peroxidation may play a very important role in the pathogenesis of APAP-induced hepatic injury; treatment with lipid-soluble antioxidant, magnolol, exerts anti-hepatotoxic activity. Our study points out the potential interest of magnolol in the treatment of toxic ALF.

Key words

Magnolol Antioxidant Acetaminophen Hepatotoxicity Lipid peroxidation 


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Copyright information

© The Pharmaceutical Society of Korea 2009

Authors and Affiliations

  • Yung-Hsiang Chen
    • 8
    • 11
    Email author
  • Feng-Yen Lin
    • 5
    • 6
  • Po-Len Liu
    • 7
  • Yi-Tsau Huang
    • 1
  • Jen-Hwey Chiu
    • 1
  • Yi-Chun Chang
    • 8
  • Kee-Ming Man
    • 8
    • 9
  • Chuang-Ye Hong
    • 10
    • 11
    Email author
  • Yen-Yi Ho
    • 1
    • 2
    • 3
  • Ming-Tsung Lai
    • 4
  1. 1.Institute of Traditional MedicineNational Yang-Ming UniversityTaipeiTaiwan
  2. 2.National Chiao Tung UniversityHsinchuTaiwan
  3. 3.Second College of Clinical MedicineGuangzhou University of Chinese MedicineGuangzhouChina
  4. 4.Department of PathologyShow Chwan Memorial HospitalChanghuaTaiwan
  5. 5.Division of Anesthesiology and Anesthetics and Toxicology Research CenterTaipei Medical University HospitalTaipeiTaiwan
  6. 6.Department of Anesthesiology, School of MedicineTaipei Medical UniversityTaipeiTaiwan
  7. 7.Faculty of Respiratory TherapyKaohsiung Medical UniversityKaohsiungTaiwan
  8. 8.Graduate Institute of Integrated Medicine, College of Chinese MedicineChina Medical UniversityTaichungTaiwan
  9. 9.Department of AnesthesiologyTungs’ Taichung MetroHarbor HospitalTaichungTaiwan
  10. 10.Taipei Medical University-Municipal Wan Fang HospitalTaipeiTaiwan
  11. 11.Graduate Institute of Integrated Medicine, College of Chinese MedicineChina Medical UniversityTaichungTaiwan

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