The Fate of Polymeric and Secretory Immunoglobulin A After Retrograde Infusion into the Common Bile Duct in Rats
Albert L. Jones, Gary T. Hradek, Douglas L. Schmucker, Brian J. Underdown – 1 November 1984 – In the rat, plasma IgA is rapidly endocytosed by hepatocytes and translocated to the bile via a receptor‐mediated vesicular transport system which appears to remain intact even during cholestasis. During the latter phenomenon, there is an accumulation of secretory IgA (sIgA) in plasma. These data suggest that biliary IgA can be regurgitated into the plasma compartment. The present study was designed to determine the location and mechanism(s) by which this might occur.