Allergic Rhinitis and Its Relationship with IL-10, IL-17, TGF-β, IFN-γ, IL 22, and IL-35.

Area of Science:

• Immunology
• Allergology

Background:

• Allergic rhinitis (AR) pathogenesis involves complex immune responses.
• Investigating novel cytokines like IL-35, IL-22, and IL-17 may reveal new therapeutic targets for AR.

Purpose of the Study:

• To explore the role of specific cytokines (IL-35, IL-22, IL-17, IL-10, TGF-β, IFN-γ) in the immunopathogenesis of allergic rhinitis.
• To assess the potential of these cytokines as targets for novel treatment strategies in AR.

Main Methods:

• Serum cytokine levels (IL-10, IL-17, TGF-β, IFN-γ, IL-22, IL-35) were quantified using ELISA in 65 AR patients and 31 controls.
• Allergic sensitization was confirmed via skin prick tests, with patients categorized into seasonal AR (SAR) or perennial AR (PAR) based on allergens (olive tree or mites, respectively).
• Nasal symptom scores (NSS) were used to evaluate AR severity.

Main Results:

• AR patients exhibited significantly higher levels of IL-17, IL-22, and TGF-β, and lower levels of IFN-γ compared to healthy controls.
• A negative correlation was observed between IFN-γ levels and nasal symptom scores (NSS) in AR patients.
• No significant differences were found in IL-10 or IL-35 levels between AR patients and controls.

Conclusions:

• The study highlights the significant involvement of T cell subgroups and specific cytokines in the immunopathogenesis of allergic rhinitis.
• Elevated IL-17, IL-22, TGF-β, and reduced IFN-γ suggest these cytokines are critical players in AR.
• These findings support the potential of targeting these cytokines for developing novel therapeutic approaches for AR.