title: Anti-Lewis X IgM and IgG in H. pylori infections in children and adults.
abstract: A role of autoimmune processes in the pathology of Helicobacter pylori infections has been suggested. The Lewis determinants present in LPS molecule of H. pylori bacteria have been indicated as the cause of antigenic mimicry. In this study, the prevalence of IgM and IgG antibodies to Lewis X antigen in the sera from children and adults, with or without dyspepsia, infected or not infected with H. pylori, seropositive and seronegative for anti-H. pylori IgG were determined immuno-enzymatically (ELISA). Our results revealed that humans may produce anti-Lewis X antibodies, particularly of IgM class, in the absence of H. pylori infection or H. pylori independent dyspepsia. The production of such antibodies, by healthy children who had never been infected with H. pylori suggested that anti-Lewis X antibodies may occur naturally.
authors.affiliation: Department of Infectious Biology, University of Lódź Poland.
authors.forename: M
authors.initials: M
authors.lastname: Chmiela
authors.forename: M
authors.initials: M
authors.lastname: Jurkiewicz
authors.forename: M
authors.initials: M
authors.lastname: Wiśniewska
authors.forename: E
authors.initials: E
authors.lastname: Czkwianianc
authors.forename: I
authors.initials: I
authors.lastname: Płaneta-Małecka
authors.forename: T
authors.initials: T
authors.lastname: Rechciński
authors.forename: W
authors.initials: W
authors.lastname: Rudnicka
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001323:Autoantibodies / Q000097:blood; D002648:Child; D004415:Dyspepsia / Q000276:immunology; D016481:Helicobacter Infections / Q000150:complications / Q000276:immunology*; D016480:Helicobacter pylori / Q000276:immunology*; D006801:Humans; D007074:Immunoglobulin G / Q000097:blood*; D007075:Immunoglobulin M / Q000097:blood*; D016256:Lewis X Antigen / Q000276:immunology*; D008875:Middle Aged
chemical_list: D001323:Autoantibodies; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D016256:Lewis X Antigen