title: Immunoglobulin A antibodies to Helicobacter pylori.
abstract: Serological testing for immunoglobulin G (IgG) antibodies to Helicobacter pylori has proven useful in supporting the diagnosis of infection with this organism, but the clinical value of IgA antibodies in H. pylori-related gastritis remains controversial. The purpose of our study was to determine the frequency of IgA-positive IgG-negative patients with symptoms of gastrointestinal (GI) disorders, thus assessing the clinical utility of IgA testing for H. pylori-related gastritis. It was found previously that the frequency of infected individuals in this category (IgA positive and IgG negative) is about 2%, but a large number of IgG-negative patients with GI disorders suggestive of H. pylori infection have not been investigated until now.
authors.affiliation: Associated Regional and University Pathologists Institute for Clinical and Experimental Pathology, Salt Lake City, Utah 84108, USA.
authors.forename: T D
authors.initials: TD
authors.lastname: Jaskowski
authors.forename: T B
authors.initials: TB
authors.lastname: Martins
authors.forename: H R
authors.initials: HR
authors.lastname: Hill
authors.forename: C M
authors.initials: CM
authors.lastname: Litwin
mesh_terms: D000907:Antibodies, Bacterial / Q000097:blood*; D005767:Gastrointestinal Diseases / Q000097:blood / Q000276:immunology / Q000382:microbiology*; D016481:Helicobacter Infections / Q000097:blood / Q000276:immunology*; D016480:Helicobacter pylori / Q000276:immunology*; D006801:Humans; D007124:Immunoenzyme Techniques; D007070:Immunoglobulin A / Q000097:blood*; D007074:Immunoglobulin G / Q000097:blood; D011933:Reagent Kits, Diagnostic
chemical_list: D000907:Antibodies, Bacterial; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D011933:Reagent Kits, Diagnostic