PMID: 2715621Mar 1, 1989Paper

The histoautoradiographic localization of taurocholate in rat liver after bile duct ligation. Evidence for ongoing secretion and reabsorption processes

Journal of Hepatology
H P BuscherW Gerok


To determine whether in complete obstructive cholestasis taurocholate is taken up by hepatocytes and if so whether it is secreted into bile, tritium-labelled taurocholate was localized by histoautoradiography on cryoslices from normal rat livers and from those after bile duct ligation. In non-cholestatic livers the hepatocytes of acinar zones 1 as well as the lumina and the epithelia of bile ductules and ducts became intensely labelled directly after injection of [3H]taurocholate into a mesenterial vein. Four hours and 4 days after bile duct ligation, hepatocytes of all three acinar zones became labelled, but in contrast to the normal state, pericanalicular concentration of silver grains was not observed, not even within 5 min. Fifteen days after bile duct obstruction, cryoslices taken 2 min after injection of [3H]taurocholate exhibited an intense silver grain labelling of all acinar zones, with the highest density at bile canalicular areas of the liver cell plates as well as the proliferated bile ductules and bile ducts. The biliary epithelium of small bile ductules and ducts of non-cholestatic and of bile duct-obstructed livers were also covered with silver grains; the epithelium of larger ducts exhibited significant labellin...Continue Reading


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