title: Immunoreactivity to food antigens in patients with chronic urticaria.
abstract: The goal of study was better understanding of complex immune mechanisms that can help to evaluate patients with chronic urticaria (CU), especially those with unknown etiology. The study involved 55 patients with CU. Control group consisted of up to 90 healthy persons. The presence and intensity of serum IgG, IgA, IgM and IgE antibodies to common food antigens: cow's milk proteins (CMP), gliadin and phytohemagglutinin were determined by ELISA. Determination of subpopulations of immunocompetent cells was performed by flow cytometry. Significantly enhanced IgE, but also IgA immunity to CMP was found in patients with CU in comparison to healthy controls: (p < 0.000004) and (p < 0.002), respectively. Notably, in 40 out of 55 CU patients, the increased levels of some type of immunoglobulin reactivity to CMP were found. Regarding gliadin, only the levels of serum IgE anti-gliadin antibodies were significantly enhanced in patients with CU (p < 0.04). Significantly enhanced percentage of CD89+ cells accompanied with significantly lower percentage of lymphocytes and significantly higher mean fluorescence intensity of CD26 expression on lymphocytes were found in patients with CU in comparison to healthy controls (p < 0.04), (p < 0.02) and (p < 0.003), respectively. Results of this study may help in better understanding the complex immune disturbances in patients with CU.
authors.affiliation: Institute of Immunology and Allergology, Clinical Center of Serbia , 11000 Belgrade , Serbia .
authors.forename: Sanvila
authors.initials: S
authors.lastname: Rašković
authors.forename: Ivana Z
authors.initials: IZ
authors.lastname: Matić
authors.forename: Marija
authors.initials: M
authors.lastname: Dorđić
authors.forename: Ana
authors.initials: A
authors.lastname: Damjanović
authors.forename: Branka
authors.initials: B
authors.lastname: Kolundžija
authors.forename: Nađa
authors.initials: N
authors.lastname: Grozdanić-Stanisavljević
authors.forename: Irina
authors.initials: I
authors.lastname: Besu
authors.forename: Zikica
authors.initials: Z
authors.lastname: Jovičić
authors.forename: Borivoj
authors.initials: B
authors.lastname: Bijelić
authors.forename: Ljiljana
authors.initials: L
authors.lastname: Janković
authors.forename: Zorica
authors.initials: Z
authors.lastname: Juranić
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000485:Allergens / Q000276:immunology; D000818:Animals; D016022:Case-Control Studies; D002417:Cattle; D002908:Chronic Disease; D018819:Dipeptidyl Peptidase 4 / Q000097:blood; D005502:Food / Q000009:adverse effects*; D005512:Food Hypersensitivity / Q000150:complications* / Q000276:immunology*; D006801:Humans; D056724:Immunity, Humoral; D007074:Immunoglobulin G / Q000097:blood / Q000276:immunology; D007075:Immunoglobulin M / Q000097:blood / Q000276:immunology; D016130:Immunophenotyping; D007694:Killer Cells, Natural / Q000276:immunology / Q000378:metabolism; D016131:Lymphocyte Subsets / Q000276:immunology / Q000378:metabolism; D008875:Middle Aged; D008894:Milk Proteins / Q000276:immunology; D014581:Urticaria / Q000150:complications* / Q000175:diagnosis / Q000276:immunology*; D055815:Young Adult
chemical_list: D000485:Allergens; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D008894:Milk Proteins; D018819:Dipeptidyl Peptidase 4
keywords: CD16+CD56+; CD26+; CD89+; cellular immunoreactivity; chronic urticaria; food antigens; humoral immunoreactivity; serum DPPIV activity