title: Avidity of anti-Yersinia antibodies in yersiniosis patients with and without Yersinia-triggered reactive arthritis.
abstract: Avidity of IgM, IgG, and IgA class anti-Yersinia antibodies was compared in sera of 22 patients with yersiniosis and subsequent reactive arthritis versus sera of 22 patients without postinfection complications. An enzyme-linked immunosorbent assay was used for antibody determination. Less than 2 months after onset of the infection, the patients with arthritis had fewer high-avidity IgM antibodies against the bacterial lipopolysaccharide (P = 0.035) and more high-avidity IgA antibodies against bacterial cell extract (P = 0.039) than did the patients without arthritis. This difference increased with time.
authors: Department of Medical Microbiology, Turku University, Finland.
authors: R
authors: R
authors: Lahesmaa-Rantala
authors: O P
authors: OP
authors: Lehtonen
authors: K
authors: K
authors: Granfors
authors: A
authors: A
authors: Toivanen
mesh_terms: D000328:Adult; D000907:Antibodies, Bacterial / Q000032:analysis / Q000276:immunology*; D000915:Antibody Affinity; D001168:Arthritis / Q000209:etiology / Q000276:immunology*; D004797:Enzyme-Linked Immunosorbent Assay; D006801:Humans; D007070:Immunoglobulin A / Q000276:immunology; D007074:Immunoglobulin G / Q000276:immunology; D007075:Immunoglobulin M / Q000276:immunology; D008875:Middle Aged; D015009:Yersinia Infections / Q000150:complications / Q000276:immunology*; D015008:Yersinia enterocolitica / Q000276:immunology
chemical_list: D000907:Antibodies, Bacterial; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M