Abstract
We have previously established a model for micronodular cirrhosis by feeding Wistar rats alcohol, in the Lieber-DeCarli liquid diet, and exposing them to 'low-dose' carbon tetrachloride (CCl4) vapour for 10 weeks. This study reports the spectrum of liver pathology seen in male Porton rats exposed to 'low-dose' CCl4 vapour 5 nights/week, 6 h/night while being fed alcohol (300 kcal/L) in the Lieber-DeCarli diet. Micronodular cirrhosis developed in all animals after 5-7 weeks of treatment. The simultaneous administration of silymarin, a putative hepatoprotective agent, in the liquid diet, did not alleviate or prevent the chronic liver injury. The histopathological features of the liver injury are described, with particular emphasis on the presence of small epithelial cells ('progenitor or stem cell'), which appear to be playing a role in liver regeneration.
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