Abstract
Anti-DNA antibodies were determined by an enzyme-linked immunosorbent assay in 116 patients with chronic liver disease consisting of 21 cases of autoimmune hepatitis (AIH), 17 of primary biliary cirrhosis (PBC), and 78 of non-autoimmune-type of chronic liver disease. The assay was also performed on 83 patients with collagen disease, as a control group. Anti-double stranded DNA antibody (anti-dsDNA) was detected in 10/21 (48%) of the AIH patients and in 3/17 (17%) of the PBC patients, but not in those with other liver diseases. In contrast, anti-single stranded DNA antibody (anti-ssDNA) was positive not only in AIH and PBC, but also in those with non-autoimmune-types of chronic liver disease. Follow-up liver histology disclosed that the 2 patients with AIH who were positive for anti-dsDNA developed liver cirrhosis, whereas the 4 patients who were negative for anti-dsDNA, and those who showed a disappearance of anti-dsDNA following corticosteroid therapy, improved from chronic active to chronic persistent hepatitis.
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