High seroprevalence of anti-Hepatitis E antibodies in Austrian patients with autoimmune hepatitis

Michael Eder, Robert Strassl, Sandra Beinhardt, Albert Friedrich Stättermayer, Karin Kozbial, Heimo Lagler, Heidemarie Holzmann, Michael Trauner, Harald Hofer

Research output: Journal article (peer-reviewed)Journal article

12 Citations (Scopus)

Abstract

BACKGROUND & AIMS: Increasing numbers of autochthonous hepatitis E virus infections have been reported in Europe. Chronic infections have been shown in immune-compromised patients after solid organ transplantation. Hepatitis E virus might be a possible trigger for autoimmune hepatitis and might cause disease flares or relapses in the further course of disease. Aim of this study was to investigate the presence of hepatitis E virus antibodies and hepatitis E virus RNA, and to analyse their impact on immunosuppressive treatment in patients with autoimmune hepatitis.

METHODS: Sera from 92 autoimmune hepatitis patients (73/79.3% female, age: 42.2 ± 16.3 years [mean ± SD]) were tested. Patients were scored according to the simplified and revised scoring systems of the International Autoimmune Hepatitis Group. The prevalence of anti- hepatitis E virus antibodies (Beijing Wantai Biological Pharmacy Enterprises Co., Ltd, Beijing, China) and hepatitis E virus RNA was determined.

RESULTS: 19/20.7% autoimmune hepatitis patients tested positive for hepatitis E virus-IgG, which was higher than in previous reports of healthy Austrian individuals (12.4%, P = 0.031); hepatitis E virus RNA was not detectable in any patient. Anti-hepatitis E virus positive patients were older (49.5 ± 9.5 vs 40.4 ± 17.2 years [mean ± SD], P = 0.033) but did not differ in laboratory findings at diagnosis (AST: 14.6 [1.3-70.6] vs 9.5 [0.7-62.7] × ULN [median/range]; P = 0.387, alanine aminotransferase: 18.3 [1.6-62.7] vs. 12.9 [0.8-62.6] × ULN; P = 0.511; IgG: 1.4 [1.0-2.5] vs 1.3 [0.6-3.8] g/dL × ULN; P = 0.278) nor in alanine aminotransferase levels after six months (0.7 [0.5-2.4] vs 1.0 U/L × ULN [0.1-22.4]; P = 0.077).

CONCLUSIONS: No chronic hepatitis E virus infection was observed in our cohort of autoimmune hepatitis patients. Anti- hepatitis E virus-IgG positive patients were older and the seroprevalence was nearly twice as high as reported previously in healthy Austrian individuals, suggesting that hepatitis E virus-infection might act as trigger for the development of autoimmune hepatitis.

Original languageEnglish
Pages (from-to)640-645
Number of pages6
JournalLiver International
Volume39
Issue number4
DOIs
Publication statusPublished - Apr 2019

Keywords

  • Adult
  • Alanine Transaminase/blood
  • Austria/epidemiology
  • Female
  • Hepatitis Antibodies/blood
  • Hepatitis E/epidemiology
  • Hepatitis E virus
  • Hepatitis, Autoimmune/complications
  • Humans
  • Immunoglobulin G/blood
  • Immunoglobulin M/blood
  • Male
  • Middle Aged
  • Prevalence
  • Seroepidemiologic Studies

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