[Inflammatory mechanisms in nasal polyposis].

Area of Science:

• Otolaryngology
• Immunology
• Pathology

Background:

• Nasal polyposis is a chronic inflammatory sinonasal disease.
• Characterized by edematous mucosal prolapse, typically from the anterior ethmoid.
• Histological features include epithelial changes, basement membrane thickening, fibrosis, and eosinophilic/lymphocytic infiltration.

Purpose of the Study:

• To explore the underlying mechanisms of nasal polyposis pathogenesis.
• To investigate the role of chronic inflammation and immune cell dysregulation.

Main Methods:

• Review of current hypotheses on etiology.
• Analysis of the role of eosinophils, cytokines, chemokines, and adhesion molecules in disease progression.

Main Results:

• Etiology remains uncertain, with dominant hypotheses including staphylococcal superantigens and immune barrier dysfunction.
• Nasal polyposis is linked to chronic inflammation and dysregulated eosinophil chemotaxis, migration, activation, and function.
• Activated eosinophils release enzymes causing mucosal damage and tissue remodeling, perpetuating inflammation.

Conclusions:

• Chronic inflammation and eosinophil hyperactivity are central to nasal polyposis.
• Further research into precise pathogenic mechanisms is warranted.
• Understanding these pathways may lead to targeted therapeutic strategies.