Similarities in maximal biliary bilirubin output in the normal rat after administration of unconjugated bilirubin or bilirubin diglucuronide
Andreas Sieg, Adolf Stiehl, Karel P. M. Heirwegh, Johan Fevery, Richard Raedsch, Burkhard Kommerell – 1 July 1989 – The rate‐limiting step in the overall plasma‐to‐bile transport of a saturating load of bilirubin is still a matter of controversy. We reassessed the apparent maximal biliary bilirubin excretion following i.v. infusion of unconjugated bilirubin and—for the first time—of highly purified bilirubin diglucuronide in the rat. The bilirubin diglucuronide preparation could be kept in a stable form at −20°C for at least 2 months after addition of 3 mM sodium ascorbate.