Autoantibody profiles in autoimmune hepatitis and chronic hepatitis C identifies similarities in patients with severe disease

AIM: To determine how the auto-antibodies (Abs) profilesoverlap in chronic hepatitis C infection (CHC) andautoimmune hepatitis (AIH) and correlate to liverdisease.METHODS: Levels of antinuclear Ab, smooth muscle antibody (SMA)and liver/kidney microsomal-1 (LKM-1) Ab and markersof liver damage were determined in the sera of 50 patients with CHC infection, 20 AIH patients and 20healthy controls using enzyme linked immunosorbentassay and other immune assays. RESULTS: We found that AIH patients had more severe liverdisease as determined by elevation of total IgG,alkaline phosphatase, total serum bilirubin and serumtransaminases and significantly higher prevalence ofthe three non-organ-specific autoantibodies (auto-Abs)than CHC patients. Antinuclear Ab, SMA and LKM-1 Abwere also present in 36% of CHC patients and relatedto disease severity. CHC cases positive for auto-Abswere directly comparable to AIH in respect of mostmarkers of liver damage and total IgG. These caseshad longer disease duration compared with auto-Abnegative cases, but there was no difference in gender,age or viral load. KLM-1+ Ab CHC cases showed bestoverlap with AIH. CONCLUSION: Auto-Ab levels in CHC may be important markers ofdisease severity and positive cases have a diseasesimilar to AIH. Auto-Abs might have a pathogenic roleas indicated by elevated markers of liver damage.Future studies will unravel any novel associationsbetween these two diseases, whether genetic or other.

MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Immunologi inom det medicinska området hsv//swe
MEDICAL AND HEALTH SCIENCES Basic Medicine Immunology in the medical area hsv//eng
Autoantibody
Inflammatory diseases
Immune system
Hepatitis C virus
Smooth muscle antibody
Liver/kidney microsomal-1 autoantibody
Anti-nuclear antibody
Infectious Diseases
Infektionssjukdomar

Ingår i:World Journal of Gastroenterology: Baishideng Publishing Group Inc.23:8, s. 1345-13521007-93272219-2840

Av författaren/redakt...: Amin, Kawa; H Rasool, Aram; Hattem, Ali; AM Al-Karboly, T ...; E Taher, Taher; Bystrom, Jonas

Om ämnet

MEDICIN OCH HÄLSOVETENSKAP: MEDICIN OCH HÄLS ...; och Medicinska och f ...; och Immunologi inom ...

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