Perivascular Innervation in the Nasal Mucosa and Clinical Findings in Patients with Allergic Rhinitis and Idiopathic...

Area of Science:

• Immunology
• Neuroscience
• Otorhinolaryngology

Background:

• Rhinitis hyperreactivity is linked to neurotrophins affecting nerves and inflammatory cells.
• The connection between these markers and symptom intensity, especially in idiopathic rhinitis, needs more research.

Purpose of the Study:

• To investigate the relationship between perivascular innervation, nerve growth factor (NGF), and clinical symptom intensity in allergic rhinitis (AR) and idiopathic rhinitis (IR).

Main Methods:

• Assessed 15 AR and 15 IR patients undergoing inferior turbinectomy.
• Quantified eosinophils, mast cells, NGF, and nerve fibers in nasal turbinates post-surgery.
• Scored patient signs and symptoms to correlate with biological markers.

Main Results:

• Allergic rhinitis patients exhibited higher symptom scores.
• Nerve growth factor (NGF) was more abundant in submucosal inflammatory cells of AR patients.
• Greater perivascular innervation correlated with increased symptom severity.

Conclusions:

• Nerve growth factor (NGF) from submucosal inflammatory cells may promote perivascular innervation in rhinitis.
• This process appears to directly intensify clinical symptoms, notably in allergic rhinitis.