title: [The regulatory effect of IL-35 on the balance of Treg/Th17 cells in allergic rhinitis patients].
abstract: OBJECTIVE
  To study the regulatory effect of IL-35 on the balance of Treg/Th17 cells in AR patients.
  
  
  METHODS
  In this study, 30 cases were randomly selected from outpatients of otolaryngological department in the second hospital of Hebei Medical university who were diagnosed as AR. Another 20 healthy cases enrolled from physical examination branch of our hospital were control group. The expression level of IL-35 and IL-17 in peripheral blood were detected by using ELISA and defeced CD4+CD25+Foxp3+ T cell and CD4+IL-17+T cell expression level were identified via flow cytometry.
  
  
  RESULTS
  The expression level of IL-35 in AR group was obviously lower than that in control group, and the difference was a statistically significance (t = -8.145, P < 0.01). The expression level of IL-17 in AR group was obviously higher than that in control group, and the difference was a statistically significance (t = 14.969, P < 0.01). There was a remarkable negative correlation between the IL-35 and IL-17 expression in the serum of AR group (r = -0.773, P < 0.01). The percentage of CD4+CD25+Foxp3+ T cell in CD4+ T cell was significant lower in AR group than that in control group (t = -13.678, P < 0.01). The percentage of CD4+IL-17+ T cell in CD4+ T cell was much higher in AR group than that in control group (t = 5.632, P < 0.01). There was a remarkable negative correlation between the Treg and Th17 expression in the peripheral blood of AR group (r = -0.613, P < 0.01). There was a positive correlation between the expression of CD4+ CD25+Foxp3+ T cell and IL-35. There was a negative correlation between the IL-35 and Th17 in AR group (r = 0. -594, P < 0.01).
  
  
  CONCLUSIONS
  The lower expression of IL-35 was related to the incidence of AR, and it was an important cytokines for that. The lower expression of IL-35 may inhibit the proliferation of Treg cells, lead to hyper function of Th17 cells, increase secretion of s IL-17 and result in unbalance of Treg/Th17 cells; these may be the important mechanism of the occurrence of AR, thus regulation of IL-35 may become a new target for the immunological therapy of AR.
authors.forename: Xue
authors.initials: X
authors.lastname: Yin
authors.forename: Xiumin
authors.initials: X
authors.lastname: Ren
authors.forename: Chunmiao
authors.initials: C
authors.lastname: Liu
authors.forename: Jianxing
authors.initials: J
authors.lastname: Wang
authors.forename: Jinhui
authors.initials: J
authors.lastname: Dong
authors.forename: Ou
authors.initials: O
authors.lastname: Xu
mesh_terms: D016022:Case-Control Studies; D004797:Enzyme-Linked Immunosorbent Assay; D005434:Flow Cytometry; D006801:Humans; D020381:Interleukin-17 / Q000097:blood*; D007378:Interleukins; D065631:Rhinitis, Allergic / Q000276:immunology*; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*; D058504:Th17 Cells / Q000276:immunology*
chemical_list: C508717:IL17A protein, human; D020381:Interleukin-17; D007378:Interleukins; C532417:interleukin-35, human