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CD95-induced apoptosis in human liver disease
1University Hospital, Department of Internal Medicine, Heidelberg, Germany.
Seminars in Liver Disease
|June 2, 1998
Summary
The CD95 system, crucial for apoptosis, is implicated in various human liver diseases. Further research is needed to confirm its direct role in causing liver cell death in humans.
Area of Science:
- Immunology
- Hepatology
- Cell Biology
Background:
- The CD95 receptor (also known as Fas or APO-1) and its ligand (CD95L) are key regulators of apoptosis.
- This system plays a physiological role in eliminating lymphocytes and liver cells.
- CD95 activation in mice causes acute hepatic failure, highlighting its potential role in human liver disease.
Purpose of the Study:
- To review the current understanding of the CD95 system's involvement in human liver diseases.
- To summarize evidence linking CD95-mediated apoptosis to conditions such as viral hepatitis, alcoholic hepatitis, and hepatocellular carcinoma.
Main Methods:
- Review of existing scientific literature and data on the CD95/CD95L system and liver pathology.
- Analysis of findings from animal models and human studies related to CD95 activation in liver disease.
Main Results:
- The CD95 system appears to be deregulated in several human liver conditions, including viral and alcoholic hepatitis, acute liver failure, bile duct diseases, and hepatocellular carcinoma.
- Animal studies suggest a causal link between CD95 activation and liver cell death.
Conclusions:
- The CD95/CD95L system is strongly implicated in the pathophysiology of various human liver diseases.
- While animal models provide compelling evidence, direct proof of CD95's causative role in human liver disease requires further investigation.