Neuroimmune communication in allergic rhinitis

Area of Science:

• Immunology
• Neuroscience
• Allergy Research

Background:

• Allergic rhinitis (AR) is a prevalent global condition driven by allergen inhalation, IgE, and type 2 inflammation.
• Emerging research highlights the critical role of neuroimmune communication in AR development.

Purpose of the Study:

• To review the mechanisms of neuroimmune communication in allergic rhinitis.
• To explore the influence of neuropeptides and shared receptors on AR pathogenesis.

Main Methods:

• Literature review focusing on neuroimmune interactions in AR.
• Analysis of neuropeptide roles (SP, VIP, CGRP, NGF, NMU) in neurogenic inflammation.
• Examination of immune-neuronal cell unit formation and receptor involvement (TRPV1, TRPA1, MRGPRX2).

Main Results:

• Neuropeptides released via axon reflexes or central sensitization regulate immune cells, causing neurogenic inflammation and nasal hyperresponsiveness (NHR).
• Immune cells can also produce neuropeptides, fostering neuroimmune cell units (e.g., nerve-mast cells, nerve-ILC2s).
• Shared receptors on immune and neuronal cells mediate AR pathogenesis.

Conclusions:

• Neuroimmune communication is a key factor in allergic rhinitis.
• Understanding these pathways offers potential therapeutic targets for AR and NHR.