Serum anti-Lewis X antibody is associated with VacA seropositivity but not atrophic gastritis in patients with Helicobacter pylori infection.

Abstract:

OBJECTIVES:Lipopolysaccharides of Helicobacter pylori have an antigenic structure that mimics Lewis X occurring in gastric mucosa. The pathogenic role of antigenic mimicry in H. pylori-induced gastritis has been of recent interest. The aim of this study was to examine the relevance of anti-Lewis X antibody in the development of atrophic gastritis in H. pylori infection. METHODS:A total of 72 patients were studied. Serum samples were collected to measure IgG antibodies to H. pylori, CagA, VacA and Lewis X. Biopsy specimens were obtained from the antrum and the corpus to examine the grade and the type of atrophic gastritis. RESULTS:Mean anti-Lewis X antibody titres were higher in 38 VacA-seropositive patients than in 13 seronegative patients (P < 0.05). The difference was not significant between patients with diffuse-type atrophic gastritis and those with multi-focal type. No significant correlation was observed between the titre of anti-Lewis X antibody and the grade of glandular atrophy, whereas CagA seropositivity was associated with glandular atrophy. CONCLUSIONS:Anti-Lewis X antibody may play a role in persistent gastric inflammation, particularly in VacA-seropositive H. pylori infection. However, anti-Lewis X antibody does not seem itself to be associated with atrophic gastritis in patients with H. pylori infection.

authors

Shimoyama T,Fukuda S,Tanaka M,Sugawara N,Kurimoto F,Munakata A

doi

10.1097/00042737-200103000-00002

subject

Has Abstract

pub_date

2001-03-01 00:00:00

pages

227-31

issue

3

eissn

0954-691X

issn

1473-5687

journal_volume

13

pub_type

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