Increased expression of intercellular adhesion molecule-1 and mucosal adhesion molecule α47 integrin in small intestinal mucosa of adult patients with food allergy

Gabor Veres, Timo Helin, Andras Arato, Martti Färkkilä, Annu Kantele, Hanna Suomalainen, Erkki Savilahti

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The mechanisms of adverse reactions to foods in the gastrointestinal tract are poorly understood. Previous studies of other atopic diseases and animal models suggest that adhesion molecules and mucosal lymphocytes may be implicated in the pathogenesis of food allergy (FA). The aim of our study was to investigate the expression of adhesion molecules and mucosal lymphocytes in duodena of patients with food allergies and of controls. Ten patients with FA to cereals (wheat, oats, and rye) or cow's milk and 9 control patients were included in the study. Quantitative analysis and immunohistochemical stainings for two pairs of adhesion molecules (intercellular adhesion molecule-1 (ICAM-1), lymphocyte function.associated antigen-1 (LFA-1), α4β7 integrin, and mucosal addressin cell adhesion molecule (MAdCAM-1) and lymphocyte markers on endoscopic duodenal biopsy specimens were performed. The villous structure and density of LFA-1-positive cells were normal in every biopsy specimen, but the patients had significantly more α4β7+ cells in the intraepithelial space (P = 0.01). The expression of ICAM-1 in the lamina propria of patients with FA was also substantially increased (P = 0.003); however, staining with MAdCAM showed no intergroup difference. Moreover, we found significantly increased CD4+ and HLA-DR+ cells in the lamina propria of patients, in comparison to the controls, P = 0.05 and P = 0.04, respectively. The densities of CD3, CD8, HLA-DP, T cell receptor αβ+ and γδ+ cells and IgA-, IgA1-, and IgA2-containing cells did not differ in the two groups studied. Our results suggest that the increased expression of ICAM-1 and α4β7 integrin may play an important role in the pathogenesis of food hypersensitivity and with the elevation of CD4-and HLA-DR-positive cells reflect a stage of inflammation in the structurally normal intestines.

Original languageEnglish
Pages (from-to)353-359
Number of pages7
JournalClinical Immunology
Volume99
Issue number3
DOIs
Publication statusPublished - Jan 1 2001

Keywords

  • Adhesion molecules
  • Food allergy
  • ICAM-1
  • Immunohistochemistry
  • αβ integrin

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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