Synonyms
Autoimmune hepatitis
Definition
Autoimmune hepatitis (AIH) is a rare inflammatory liver disease that is clinically characterized by elevations of transaminases (ALT > AST), immunoglobulins, and certain autoantibodies (AAB) as well as exclusion of other relevant causes of hepatitis (e.g., infectious, toxic, vascular, metabolic). Histological hallmarks are the predominantly lymphocytic, mostly plasma cell-rich portal infiltrates with interface hepatitis, although histology alone is never used as diagnosis. A successful treatment with steroids can strengthen the diagnosis of AIH.
Immunopathogenesis
The presence of liver-specific autoantibodies against cytochromes (UDP-glucuronosyltransferases (UGTs) and formiminotransferase cyclodeaminase (FTCD)), the elevation of immunoglobulins, and the dense lymphocytic portal infiltrates suggested an auto-aggressive cellular immune response. This was further supported by successful therapy with immunosuppressants (Kirk et al. 1980; Manns et...
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Taubert, R., Jaeckel, E., Manns, M.P. (2014). Autoimmune Hepatitis: Pathogenesis, Association with Other Syndromes. In: Mackay, I.R., Rose, N.R., Diamond, B., Davidson, A. (eds) Encyclopedia of Medical Immunology. Springer, New York, NY. https://doi.org/10.1007/978-0-387-84828-0_195
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DOI: https://doi.org/10.1007/978-0-387-84828-0_195
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