Sn‐protoporphyrin lowers serum bilirubin levels, decreases biliary bilirubin output, enhances biliary heme excretion and potently inhibits hepatic heme oxygenase activity in normal human subjects
Lars Berglund, Bo Angelin, Rolf Blomstrand, George Drummond, Attallah Kappas – 1 May 1988 – Sn‐protoporphyrin, a potent competitive inhibitor of heme oxygenase, the rate‐limiting enzyme in the degradation of heme to bile pigment, was administered to 10 normal volunteers: 8 males and 2 females. A significant decrease in the levels of serum (mean decrease; 38%) and biliary bilirubin (mean decrease: 47%) was demonstrated in all 10 subjects. The decrease in these parameters lasted for a minimum of 4 days after administration of the metalloporphyrin.