Document Detail


Bile ductule formation in fetal, neonatal, and infant livers compared with extrahepatic biliary atresia.
MedLine Citation:
PMID:  8781326     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The cell of origin of intrahepatic bile ducts during fetal development remains a subject of controversy, although there has been recent evidence that they form from hepatocytes. However, the origin of neoductules and ducts in the setting of liver disease has not been extensively investigated in humans. Using anticytokeratins characteristic of hepatocytes and bile ducts, we repeated earlier studies of fetal development to compare ductule formation in normal developing and newborn livers with the ductules formed during extrahepatic biliary atresia. We utilized an antibody to proliferating cell nuclear antigen (PCNA) staining to determine which cells were in active DNA synthesis (S phase) during fetal development and liver disease progression. The results indicated that hepatocytes undergo a phenotypic switch (metaplasia) to form ductular cells during fetal development. There was no ductular cell replication in the fetal livers. In contrast, both bile ductular metaplasia and proliferation were observed in biliary atresia. Therefore, both a limiting plate phenotypic switch to ductules and replication of ductular cells play a role in the increase in the ductules seen in the progression to biliary cirrhosis. Bile ductular proliferation in biliary atresia, however, was less than that seen in hepatocytes, whereas the number of bile ductules increased and the relative proportion of hepatocytes diminished as the accompanying periductular fibrosis progressed to cirrhosis.
Authors:
J Cocjin; P Rosenthal; V Buslon; L Luk; L Barajas; S A Geller; B Ruebner; S French
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Hepatology (Baltimore, Md.)     Volume:  24     ISSN:  0270-9139     ISO Abbreviation:  Hepatology     Publication Date:  1996 Sep 
Date Detail:
Created Date:  1996-12-04     Completed Date:  1996-12-04     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8302946     Medline TA:  Hepatology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  568-74     Citation Subset:  IM    
Affiliation:
Department of Pediatrics, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
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MeSH Terms
Descriptor/Qualifier:
Bile Ducts / embryology*,  growth & development*
Bile Ducts, Extrahepatic*
Biliary Atresia / embryology*,  pathology,  physiopathology*
Embryonic and Fetal Development
Humans
Infant
Infant, Newborn / growth & development*
Keratins / metabolism
Liver / embryology,  metabolism,  pathology
Proliferating Cell Nuclear Antigen / metabolism
Chemical
Reg. No./Substance:
0/Proliferating Cell Nuclear Antigen; 68238-35-7/Keratins

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