Primary biliary cirrhosis: assessment of the quantitative importance of the adenine nucleotide translocator protein as a major mitochondrial antigen.

Abstract:

:The adenine nucleotide translocator protein (ANT) is the first well-characterized mitochondrial polypeptide to be identified as an antigen for antimitochondrial autoantibodies (AMA) in PBC sera. Because of the potential use for a highly purified antigen as a tool in studying the aetiology of PBC, we have undertaken an assessment of the quantitative importance of ANT as a PBC-specific mitochondrial antigen. Immunoblotting and ELISA techniques were used. Both methods reveal PBC antibodies against isolated rat liver ANT. However, competitive ELISA experiments using purified rat liver ANT as the competing antigen show that anti-ANT antibodies in PBC serum comprise only a fraction of the total AMA. Furthermore, both ELISA and immunoblotting experiments show that rat liver ANT is not a specific antigen for PBC autoantibodies. Sera from patients with SLE, chronic active hepatitis, and sera from normal, control patients, have nearly the same, or higher, ANT antibody titres. Thus, ANT is not a good candidate as an antigen for the diagnosis of PBC.

journal_name

Clin Exp Immunol

authors

Mendel-Hartvig I,Frostell A,Nelson BD

subject

Has Abstract

pub_date

1986-11-01 00:00:00

pages

399-405

issue

2

eissn

0009-9104

issn

1365-2249

journal_volume

66

pub_type

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