Related Experiment Video
Updated: Aug 1, 2026

09:04
DNBS/TNBS Colitis Models: Providing Insights Into Inflammatory Bowel Disease and Effects of Dietary Fat
Published on: February 27, 2014
Liver involvement and its course in experimental colitis in rats
11st Department of Surgery, University of Medicine, Wroclaw, Poland.
Hepato-Gastroenterology
|July 1, 1997
Summary
In rats with experimental ulcerative colitis, progressive sclerosing cholangitis was observed histologically, despite normal liver function tests. This highlights that normal liver biochemistry does not rule out histological liver damage.
Area of Science:
- Gastroenterology
- Hepatology
- Pathology
Background:
- Chronic ulcerative colitis (UC) is an inflammatory bowel disease.
- Liver involvement can occur in UC patients.
- Early sclerosing cholangitis (SC) is a potential complication.
Purpose of the Study:
- To evaluate histological liver lesions in an experimental model of UC.
- To compare liver histology with biochemical liver function parameters.
Main Methods:
- An experimental model of chronic ulcerative colitis was established in rats.
- Histological examination of the biliary tree was performed.
- Biochemical tests assessed liver function.
Main Results:
- Histological analysis revealed progressive fibrotic inflammation of the biliary tree, consistent with early sclerosing cholangitis.
- Liver function tests remained normal in all experimental animals.
Conclusions:
- Sclerosing cholangitis associated with experimental ulcerative colitis is a progressive condition.
- Normal liver biochemistry does not exclude the presence of significant liver histology changes in UC.

