Thioacetamide-induced hepatic fibrosis in transforming growth factor beta-1 transgenic mice

János Schnur, Julia Oláh, Ágota Szepesi, Péter Nagy, Snorri S. Thorgeirsson

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Objective: Transforming growth factor beta-1 (TGF-β1) is thought to be one of the most important factors affecting the development of fibrotic processes in the liver. Aim: To discover whether endogenously higher TGF-β1 production influences the progression and reversibility of liver fibrosis in mice. Method: We compared thioacetamide-induced liver fibrosis between wild-type and transgenic mice overexpressing active TGF-β1 in the liver. Hepatic fibrosis was detected on histological sections, and fibrotic areas were measured by means of morphometric analysis. We also performed Northern blot hybridisation and gelatine zymography to improve our understanding of the process. Results: The fibrotic process was faster in the transgenic animals, and regression after the withdrawal of the fibrogenic agent was slower. Fibrosis did not disappear completely from the TGF-β1 overexpressing mice, even at the endpoint of the experiment. Conclusion: Since the increased TGF-β1 production in the liver slowed down the regression of the liver fibrosis, the behaviour of these transgenic mice is more similar to the human situation, where cirrhosis is irreversible. We propose that this transgenic model is more suitable for investigating fibrotic liver diseases than the experiments done previously on wild-type rodents.

Original languageEnglish
Pages (from-to)127-133
Number of pages7
JournalEuropean Journal of Gastroenterology and Hepatology
Volume16
Issue number2
DOIs
Publication statusPublished - Feb 1 2004

Keywords

  • Cirrhosis
  • Fibrosis
  • Liver
  • MMP-2
  • MMP-9
  • TGF-β1
  • Thioacetamide

ASJC Scopus subject areas

  • Hepatology
  • Gastroenterology

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