The expression analysis of IL-6, IL-18, IL-21, IL-23, and TGF-β mRNA in the nasal mucosa of patients with Allergic rhinitis.

Background: The profile of inflammatory and suppressing cytokines is important to contribute to the disruption of TH1/TH2 balance in Allergic rhinitis (AR).

Objective: This study aimed to assess the expression levels of IL-6, IL-18, IL-21, IL-23, and TGF-β in nasal biopsies in AR patients and evaluate its correlation with the severity of AR.

Material And Method: The study included 30 patients with mild persistent allergic rhinitis (MPAR), patients with moderate-to-severe (M/S) PAR, and 30 healthy individuals.