HepatologyVolume 5, Issue 4 p. 573-579 Original ArticleFree Access Hereditary chronic conjugated hyperbilirubinemia in mutant rats caused by defective hepatic anion transport Peter L. M. Jansen M. D., Corresponding Author Peter L. M. Jansen M. D. Division of Gastrointestinal and Liver Diseases, St. Radboud University Hospital, Nijmegen, The Netherlands and Laboratory of Anatomy and Embryology, University of Amsterdam, Amsterdam, The NetherlandsDivision of Gastrointestinal and Liver Diseases, St. Radboud Hospital, Geert Grooteplein Zuid 8, 6500 HB Nijmegen, The Netherlands===Search for more papers by this authorWilbert H. Peters, Wilbert H. Peters Division of Gastrointestinal and Liver Diseases, St. Radboud University Hospital, Nijmegen, The Netherlands and Laboratory of Anatomy and Embryology, University of Amsterdam, Amsterdam, The Netherlands Recipient of a grant from the Niels Stensen Stichting.Search for more papers by this authorWouter H. Lamers, Wouter H. Lamers Division of Gastrointestinal and Liver Diseases, St. Radboud University Hospital, Nijmegen, The Netherlands and Laboratory of Anatomy and Embryology, University of Amsterdam, Amsterdam, The NetherlandsSearch for more papers by this author Peter L. M. Jansen M. D., Corresponding Author Peter L. M. Jansen M. D. Division of Gastrointestinal and Liver Diseases, St. Radboud University Hospital, Nijmegen, The Netherlands and Laboratory of Anatomy and Embryology, University of Amsterdam, Amsterdam, The NetherlandsDivision of Gastrointestinal and Liver Diseases, St. Radboud Hospital, Geert Grooteplein Zuid 8, 6500 HB Nijmegen, The Netherlands===Search for more papers by this authorWilbert H. Peters, Wilbert H. Peters Division of Gastrointestinal and Liver Diseases, St. Radboud University Hospital, Nijmegen, The Netherlands and Laboratory of Anatomy and Embryology, University of Amsterdam, Amsterdam, The Netherlands Recipient of a grant from the Niels Stensen Stichting.Search for more papers by this authorWouter H. Lamers, Wouter H. Lamers Division of Gastrointestinal and Liver Diseases, St. Radboud University Hospital, Nijmegen, The Netherlands and Laboratory of Anatomy and Embryology, University of Amsterdam, Amsterdam, The NetherlandsSearch for more papers by this author First published: July/August 1985 https://doi.org/10.1002/hep.1840050408Citations: 267 AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract A mutant rat strain is described with autosomal recessive conjugated hyperbilirubinemia. Transport of conjugated bilirubin and tetrabromosulfophthalein from liver to bile is severely impaired whereas uptake of organic anions from plasma to liver is normal. During the first 10 days of life, serum bilirubin levels are 147 ± 11 μmoles per liter with 68.7% diconjugates and 27.9% monoconjugates. In adult rats, serum bilirubin is 33 ± 8 μmoles per liter with 81.8% diconjugates and 12.1% monoconjugates vs. 0.3 ± 0.1 μmole per liter unconjugated bilirubin in normal adult rats. Bile acid metabolism is only mildly affected. In young rats, serum bile acid levels are normal. In adult rats, bile acid levels are elevated to 49 ± 11 μmoles per liter vs. 10 ± 6 μmoles per liter in normal rats. The bile flow in mutant rats is reduced to about 50%. This might be caused by a reduction of the bile acid-independent bile fraction. Liver marker enzyme activities in mutant rat serum are normal. Liver morphology is also normal. 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