Matrix metalloproteinase-9 (MMP-9) in allergic nasal polyps
Related Experiment Video
Updated: Feb 27, 2026
Author Spotlight: Advancing Allergic Rhinitis Research with Multicolor Immunofluorescence
Published on: September 22, 2023
Guler Bugdayci1, Mustafa Kaymakci, Neslihan Bukan
1Department of Biochemistry, Abant Izzet Baysal University, Golkoy, Bolu, Turkey. gbugdayci@gmail.com
Abstract:
Matrix metalloproteinases (MMPs) are known to play important roles in the invasion of nasal mucosa by inflammatory cells through degradation of extracellular matrix. Matrix metalloproteinase-9 (MMP-9) is considered to play a role in the pathogenesis of nasal polyp. The aim of the present study was to compare plasma MMP-9 levels of patients with nasal polyp of different etiologic origins, those with allergic nasal polyp (ANP) and non-allergic nasal polyp (NANP). In all, 29 patients (20 NANP and 9 ANP) and 20 healthy subjects were included in this study. Plasma MMP-9 levels were measured using ELISA. Plasma MMP-9 levels were higher (p<0.05) in ANP patients than in NANP patients and controls. In the group with ANP, plasma MMP-9 levels showed a positive correlation (p<0.05) with eosinophil counts. Plasma MMP-9 levels of NANP patients and control groups were similar (p>0.05). Moreover, that the highest levels of MMP-9 were in ANP patients may indicate the usefulness of this parameter in differentiating between the different etiologic origins of nasal polyp. Further studies are required to elaborate on the relationship between MMP-9 levels and allergic reactions.
Insights
Plasma matrix metalloproteinase-9 (MMP-9) levels are higher in allergic nasal polyp patients compared to non-allergic nasal polyp patients and controls. Elevated MMP-9 may help differentiate nasal polyp origins.
Area of Science:
- Biochemistry
- Immunology
- Otorhinolaryngology
Background:
- Matrix metalloproteinases (MMPs) facilitate inflammatory cell invasion by degrading extracellular matrix.
- Matrix metalloproteinase-9 (MMP-9) is implicated in the pathogenesis of nasal polyps.
Purpose of the Study:
- To compare plasma MMP-9 levels in patients with allergic nasal polyp (ANP) and non-allergic nasal polyp (NANP).
- To investigate the potential of MMP-9 as a biomarker for differentiating nasal polyp etiologies.
Main Methods:
- Plasma MMP-9 levels were quantified using ELISA in 29 nasal polyp patients (20 NANP, 9 ANP) and 20 healthy controls.
- Correlation between plasma MMP-9 levels and eosinophil counts was assessed in ANP patients.
Main Results:
- Plasma MMP-9 levels were significantly higher in ANP patients compared to NANP patients and controls (p<0.05).
- A positive correlation was observed between plasma MMP-9 levels and eosinophil counts in ANP patients (p<0.05).
- Plasma MMP-9 levels did not differ between NANP patients and controls (p>0.05).
Conclusions:
- Elevated plasma MMP-9 levels in ANP patients suggest its role in allergic nasal polyp pathogenesis.
- Plasma MMP-9 may serve as a useful biomarker for distinguishing between allergic and non-allergic nasal polyps.
- Further research is needed to elucidate the precise relationship between MMP-9 and allergic reactions in nasal polyps.
Related Concept Videos
01:23Role of Matrix Metalloproteases in Degradation of ECM
01:25Antiasthma Drugs: Mast Cell Stabilizers and Anti-IgE Drugs
Mast cell stabilizers, such as cromolyn (also known as sodium cromoglycate) and nedocromil (Tilade), are effective drugs in asthma management. These stabilizers hinder histamine release by skillfully obstructing the activation of mast cells and other cellular entities. Notably, they navigate this task without...