PMID- 9303484 OWN - NLM STAT- MEDLINE DCOM- 19971008 LR - 20041117 IS - 0270-9139 (Print) IS - 0270-9139 (Linking) VI - 26 IP - 3 DP - 1997 Sep TI - Antibodies to single-stranded and double-stranded DNA in antinuclear antibody-positive type 1-autoimmune hepatitis. PG - 567-72 AB - To determine the significance of antibodies to single-stranded (anti-ssDNA) and double-stranded DNA (anti-dsDNA) in antinuclear antibody (ANA)-positive type 1 autoimmune hepatitis, sera from 53 patients were tested by enzyme immunosorbent assay (ELISA) and indirect immunofluorescence using the Crithidia luciliae substrate. Anti-dsDNA were detected in 18 patients (34%) by ELISA and 12 patients (23%) by the Crithidia-based assay. Twenty patients with anti-dsDNA by either assay (38%) had higher serum levels of immunoglobulin G (3971 +/- 270 mg/dL vs. 3201 +/- 247 mg/dL, P = .05) than seronegative patients. They also had human leukocyte antigen (HLA) DR4 more commonly than other patients (83% vs. 41%, P = .006) and normal subjects (83% vs. 30%, P = .00007). In contrast to patients seropositive by the Crithidia-based assay, those seropositive by ELISA failed corticosteroid therapy more commonly (24% vs. 3%, P = .04). Anti-ssDNA were found in 45 patients (85%) and they did not distinguish patients with different clinical features or outcomes. We conclude that anti-dsDNA are common in ANA-positive type 1 autoimmune hepatitis. HLA DR4 is associated with their production, and seropositivity by ELISA characterizes patients who have a poorer immediate response to corticosteroid treatment. Anti-ssDNA are common but they do not have important clinical implications. FAU - Czaja, A J AU - Czaja AJ AD - Division of Gastroenterology and Internal Medicine, Mayo Clinic and Mayo Foundation, Rochester, MN 55905, USA. FAU - Morshed, S A AU - Morshed SA FAU - Parveen, S AU - Parveen S FAU - Nishioka, M AU - Nishioka M LA - eng PT - Journal Article PL - United States TA - Hepatology JT - Hepatology (Baltimore, Md.) JID - 8302946 RN - 0 (Antibodies, Antinuclear) RN - 0 (DNA, Single-Stranded) RN - 0 (HLA-DR Antigens) RN - 9007-49-2 (DNA) SB - IM MH - Animals MH - Antibodies, Antinuclear/*blood MH - Autoimmune Diseases/*immunology/physiopathology/therapy MH - Crithidia MH - DNA/*immunology MH - DNA, Single-Stranded/*immunology MH - Disease Progression MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Fluorescent Antibody Technique, Indirect MH - HLA-DR Antigens/blood MH - Hepatitis/*immunology/physiopathology/therapy MH - Humans MH - Liver/pathology MH - Liver Function Tests MH - Male MH - Middle Aged MH - Physical Examination MH - Recurrence MH - Treatment Outcome EDAT- 1997/09/26 00:00 MHDA- 1997/09/26 00:01 CRDT- 1997/09/26 00:00 PHST- 1997/09/26 00:00 [pubmed] PHST- 1997/09/26 00:01 [medline] PHST- 1997/09/26 00:00 [entrez] AID - S0270913997003844 [pii] AID - 10.1002/hep.510260306 [doi] PST - ppublish SO - Hepatology. 1997 Sep;26(3):567-72. doi: 10.1002/hep.510260306.