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. 1985 Feb;118(2):218–224.

Connection of ductlike structures induced by a chemical hepatocarcinogen to portal bile ducts in the rat liver detected by injection of bile ducts with a pigmented barium gelatin medium.

H A Dunsford, R Maset, J Salman, S Sell
PMCID: PMC1887865  PMID: 2578739

Abstract

Newly found metaplastic ductlike structures that form in the liver of rats exposed to carcinogens are connected to preexisting bile ducts. Male Fischer rats fed a diet of N-2-acetylaminofluorene in a choline-deficient diet (CDAAF) develop a massive proliferation of oval cells which appear to differentiate into bile-ductlike structures. However, unlike normal or proliferating bile ducts, these ductlike structures contain alpha-fetoprotein (AFP) and albumin, which are markers for proliferating hepatocytes and some hepatocellular carcinomas. Bile duct injections with a green pigmented barium gelatin medium filled the lumens of the ductlike structures and typical ductlike structures induced by the CDAAF diet, as well as the proliferating bile ducts induced by the noncarcinogenic alpha-naphthylisothiocyanate (ANIT), and the ducts in the normal controls. AFP was present in the ductlike structures in the rats fed AAF, but not in the bile ducts of animals fed ANIT. These studies suggest that most, if not all, of the ductlike structures produced during chemical hepatocarcinogenesis are derived from bile ducts, yet have the capacity to produce AFP and albumin.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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