A radioimmunoassay for detection of circulating antibodies reacting with the hepatic asialoglycoprotein receptor protein.

Abstract

To determine whether circulating antibodies against the liver-specific membrane lipoprotein complex (LSP), which occur in a number of liver disorders, are directed at the hepatic asialoglycoprotein receptor protein (hepatic lectin)--recently shown to be a constituent of LSP--a radioimmunoassay for anti-hepatic lectin antibodies was developed based on the use of protein A in situ on staphylococcal cells to precipitate 125I-labelled rabbit hepatic lectin/anti-lectin immune complexes. The assay was used to test sera from 30 patients (15 anti-LSP-positive and 15 anti-LSP-negative) with autoimmune chronic active hepatitis (CAH), hepatitis B virus-positive CAH or primary biliary cirrhosis. Anti-lectin antibodies (at titres of 1:200 to 1:1600) were found in all 15 anti-LSP-positive sera and were not detected in the 15 anti-LSP-negative patients. Hepatic lectin is a highly purifiable, liver-specific, hepatocellular surface component and the anti-lectin assay (which proved sensitive, reliable and easy to perform) will permit further exploration of the role of autoimmune mechanisms in the pathogenesis of various liver diseases.

• Authors: B M McFarlane, C G McSorley, I G McFarlane, R Williams
• Journal: Journal of immunological methods (J Immunol Methods) Vol. 77 Issue 2 Pg. 219-28 (Mar 18 1985) ISSN: 0022-1759 [Print] Netherlands
• PMID: 3981001 (Publication Type: Journal Article)

Chemical References

• Asialoglycoprotein Receptor
• Asialoglycoproteins
• Autoantibodies
• Lipoproteins
• Membrane Proteins
• Proteins
• Receptors, Immunologic

Topics

• Asialoglycoprotein Receptor
• Asialoglycoproteins (metabolism)
• Autoantibodies (analysis)
• Hepatitis, Chronic (immunology)
• Humans
• Lipoproteins (immunology)
• Liver (immunology)
• Liver Cirrhosis, Biliary (immunology)
• Membrane Proteins
• Proteins (immunology)
• Radioimmunoassay
• Receptors, Immunologic (immunology)