TY - JOUR
T1 - CD4(+) T cells producing interleukin (IL)-17, IL-22 and interferon-? are major effector T cells in nickel allergy
AU - Dyring Andersen, Beatrice
AU - Skov, Lone
AU - Løvendorf, Marianne B
AU - Bzorek, Michael
AU - Søndergaard, Knud
AU - Lauritsen, Jens-Peter H
AU - Dabelsteen, Sally Anne Malene
AU - Geisler, Carsten
AU - Bonefeld, Charlotte Menné
PY - 2013/6
Y1 - 2013/6
N2 - Background: It has been suggested that interleukin (IL)-17 and IL-22 play important roles in the elicitation of human allergic contact dermatitis; however, the frequencies of T cell subtypes producing IL-17 and IL-22 in human allergic contact dermatitis are unknown. Objectives: To determine the frequencies of CD4+, CD8+ and γδ T cells producing IL-17, IL-22 and interferon (IFN)-γ in the blood and skin from nickel-allergic patients. Patients/materials/methods Blood samples were collected from 14 patients and 17 controls, and analysed by flow cytometry. Biopsies were taken from 5 patients and 6 controls, and analysed by immunohistochemistry and flow cytometry of skin lymphocytes. Results: We found an increased frequency of γδ T cells in the blood, but no differences in the distribution of cytokine-producing CLA+ T cell subtypes in nickel-allergic patients as compared with controls. In nickel-allergic patients, there was massive cellular infiltration dominated by CD4+ T cells producing IL-17, IL-22 and IFN-γ in nickel-challenged skin but not in vehicle-challenged skin. Conclusion: CD4 + T cells producing IL-17, IL-22 and IFN-γ are important effector cells in the eczematous reactions of nickel-induced allergic contact dermatitis in humans.
AB - Background: It has been suggested that interleukin (IL)-17 and IL-22 play important roles in the elicitation of human allergic contact dermatitis; however, the frequencies of T cell subtypes producing IL-17 and IL-22 in human allergic contact dermatitis are unknown. Objectives: To determine the frequencies of CD4+, CD8+ and γδ T cells producing IL-17, IL-22 and interferon (IFN)-γ in the blood and skin from nickel-allergic patients. Patients/materials/methods Blood samples were collected from 14 patients and 17 controls, and analysed by flow cytometry. Biopsies were taken from 5 patients and 6 controls, and analysed by immunohistochemistry and flow cytometry of skin lymphocytes. Results: We found an increased frequency of γδ T cells in the blood, but no differences in the distribution of cytokine-producing CLA+ T cell subtypes in nickel-allergic patients as compared with controls. In nickel-allergic patients, there was massive cellular infiltration dominated by CD4+ T cells producing IL-17, IL-22 and IFN-γ in nickel-challenged skin but not in vehicle-challenged skin. Conclusion: CD4 + T cells producing IL-17, IL-22 and IFN-γ are important effector cells in the eczematous reactions of nickel-induced allergic contact dermatitis in humans.
U2 - 10.1111/cod.12043
DO - 10.1111/cod.12043
M3 - Journal article
SN - 0105-1873
VL - 68
SP - 339
EP - 347
JO - Contact Dermatitis
JF - Contact Dermatitis
IS - 6
ER -