Protective effect of MDL28170 against thioacetamide-induced acute liver failure in mice

Cheng Haung Wang, Yann Jang Chen, Tsung Hsing Lee, Yi Shen Chen, Bruno Jawan, Kuo Sheng Hung, Cheng Nan Lu, Jong Kang Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


Liver injury is known to often progress even after the hepatotoxicant is dissipated. The hydrolytic enzyme calpain, which is released from dying hepatocytes, destroys the surrounding cells and results in progression of injury. Therefore, control of calpain activation may be a suitable therapeutic intervention in cases of fulminant hepatic failure. This study evaluated the effects of a potent cell-permeable calpain inhibitor, MDL28170, and its mechanisms of action on thioacetamide (TAA)-induced hepatotoxicity in mice. We found that MDL28170 significantly decreased mortality and change in serum transaminase after TAA administration. The necroinflammatory response in the liver was also suppressed. Furthermore, a significant suppression of hepatocyte apoptosis could be found by terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling assay. The upregulation of inducible nitric oxide synthase (iNOS) and tumor necrosis factor-α (TNF-α), both of which are known to mediate the propagation of inflammation, was abolished. MDL2810 also effectively blocked hepatic stellate cell activation, which is assumed to be the early step in liver fibrosis. These results demonstrated that MDL28170 attenuated TAA-induced acute liver failure by inhibiting hepatocyte apoptosis, abrogating iNOS and TNF-α mRNA upregulation and blocking hepatic stellate cell activation.

Original languageEnglish
Pages (from-to)571-578
Number of pages8
JournalJournal of Biomedical Science
Issue number5
StatePublished - 2004


  • Apoptosis
  • Calpain inhibitor
  • MDL28170
  • Thioacetamide


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