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Canals of Hering: recent insights and current knowledge
1Department of Pathology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA. rsaxena@iupui.edu
Seminars in Liver Disease
|April 16, 2004
Summary
The Canals of Hering (CoH), a critical liver interface, are highlighted by CK19/CK7 and may harbor liver stem cells. Their destruction in diseases like primary biliary cirrhosis explains lobular inflammation.
Area of Science:
- Hepatology
- Biliary System Anatomy
- Liver Stem Cell Research
Background:
- The Canals of Hering (CoH) are the initial bile-collecting channels originating within liver lobules.
- They are lined by both cholangiocytes and hepatocytes, forming the hepatocytic-biliary interface.
- CoH are not easily visible with standard histological stains but are identifiable using biliary cytokeratins CK19 and CK7.
Purpose of the Study:
- To elucidate the anatomical and functional significance of the Canals of Hering.
- To investigate the role of CoH in liver diseases and their potential as a hepatic stem cell niche.
Main Methods:
- Histological analysis using biliary cytokeratins CK19 and CK7 to highlight CoH.
- Review of existing literature on CoH structure, function, and disease association.
Main Results:
- CoH are located within lobules, representing the true hepatocytic-biliary interface.
- A density of approximately 1 CoH per 10 micrometers of bile duct length was observed.
- CoH destruction is implicated in the pathogenesis of primary biliary cirrhosis and methotrexate toxicity.
- Evidence suggests CoH may harbor intraorgan liver stem cells and proliferate during disease.
Conclusions:
- The Canals of Hering are crucial anatomical structures at the hepatocyte-bile interface.
- Their involvement in liver diseases and potential role in liver regeneration warrant further investigation.
