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  • Title: Biliary excretion of copper in LEC rat after introduction of copper transporting P-type ATPase, ATP7B.
    Author: Terada K, Aiba N, Yang XL, Iida M, Nakai M, Miura N, Sugiyama T.
    Journal: FEBS Lett; 1999 Apr 01; 448(1):53-6. PubMed ID: 10217409.
    Abstract:
    Wilson's disease, an autosomal recessive disorder, is characterized by the excessive accumulation of hepatic copper that results from reduced biliary copper excretion and disturbed incorporation of copper into ceruloplasmin. The ATP7B gene, responsible for the disease, encodes a copper transporting P-type ATPase. We previously demonstrated the involvement of ATP7B in hepatic copper secretion into plasma after the introduction of ATP7B into the Long-Evans Cinnamon (LEC) rat, a rodent model of Wilson's disease. In this study we found the increased copper contents of the hepatic lysosomal fractions and bile in the LEC rats after ATP7B introduction, indicating the participation of ATP7B in the biliary excretory pathway for copper.
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