IL-25 Could Be Involved in the Development of Allergic Rhinitis Sensitized to House Dust Mite

Abstract EN

Background and Purpose.

When house dust mite (HDM), a common allergen, comes into the mucosal membrane, it may stimulate innate immunity.

However, the precise role of interleukin- (IL-) 25 in the development of HDM-induced nasal allergic inflammation is still unclear.

Therefore, we investigated the role of IL-25 in allergic rhinitis (AR) patients sensitized to HDM.

Methods.

To confirm the production of IL-25 in human nasal epithelial cells (HNECs), we stimulated HNECs.

IL-25 expression in the nasal mucosa from control, non-AR (NAR) patients, and HDM-sensitized AR patients was assessed using immunohistochemistry, and quantitative reverse transcription PCR.

Correlations between IL-25 and other inflammatory markers were explored.

Results.

An in vitro study showed significantly elevated concentrations of IL-25 in the HNEC samples with highest doses of HDM.

Nasal tissues from AR patients sensitized to HDM showed significantly higher IL-25 expression, compared to those from the control or NAR patients.

Moreover, the expression of IL-25 in nasal tissues from AR patients sensitized to HDM was positively associated with Th2 markers, such as ECP and GATA3.

Conclusions.

IL-25 expression increased with high-dose HDM stimulation and was related to Th2 markers.

Therefore, IL-25 neutralization might offer a new strategy for treating patients with HDM-sensitized AR.