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Coexpression of intercellular adhesion molecule-1 and class I major histocompatibility complex antigens on hepatocyte membrane in chronic viral hepatitis.

Abstract：

AIMS:To evaluate the role of hepatocyte expression of leucocyte adhesion molecules and major histocompatibility complex (MHC) antigens in the pathogenesis of chronic viral hepatitis. METHODS:The expression of intercellular adhesion molecule 1 (ICAM-1), lymphocyte function associated antigen 3 (LFA-3), and MHC class I and II antigens on hepatocyte membrane in relation to the histological and biochemical activities was studied in patients with chronic B hepatitis, chronic persistent hepatitis (CPH) n = 23; chronic active hepatitis (CAH) n = 20; chronic D hepatitis (CAH) n = 6; and chronic non-A, non-B hepatitis (CPH n = 4, CAM n = 6). Six of the latter were hepatitis C virus antibody positive. RESULTS:In chronic B hepatitis ICAM-1 and MHC-I were expressed significantly more in patients with CAH than in those with CPH (p < 0.001), while the expression of LFA-3 and MHC-II showed no significant difference, irrespective of serum HBeAg or hepatitis B virus DNA. Similar findings were noted in non-A, non-B hepatitis. Regardless of the viral aetiology, patients with CAH had a significantly higher degree of ICAM-1 and MHC-I expression than LFA-3 (p < 0.001 v ICAM-1 and MHC-I, respectively) and MHC-II (p < 0.001 v ICAM-1 and MHC-I, respectively) expression. Those with CPH showed little or no difference in the expression of these four molecules. Furthermore, serum ALT values positively correlated with the hepatocyte expression of ICAM-1 (p < 0.001) and MHC-I (p < 0.001), but not LFA-3 (p > 0.05) and MHC-II (p > 0.05). CONCLUSIONS:In chronic viral hepatitis hepatocyte expression of ICAM-1 and MHC-I might be important for immunosurveillance against virally infected hepatocytes, while the expression of LFA-3 and MHC-II does not seem to have a role in the pathogenesis of chronic viral hepatitis.

journal_name

J Clin Pathol

journal_title

Journal of clinical pathology

authors

Chu CM,Liaw YF

doi

10.1136/jcp.46.11.1004

subject

Has Abstract

pub_date

1993-11-01 00:00:00

pages

1004-8

issue

eissn

0021-9746

issn

1472-4146

journal_volume

pub_type

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Coexpression of intercellular adhesion molecule-1 and class I major histocompatibility complex antigens on hepatocyte membrane in chronic viral hepatitis.