Related Experiment Video
Updated: Aug 29, 2026
Immunofluorescent Labeling in Nasal Mucosa Tissue Sections of Allergic Rhinitis Rats via Multicolor Immunoassay
Published on: September 22, 2023
[Expression of inducible nitric oxide synthase in allergic fungal rhinosinusitis]
Jin Hu1, Yonghua Cui, Minghui Wei
1Department of Otolaryngology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030.
Objective:
To investigate the expression of inducible nitric oxide synthase(iNOS) in the mucus involved in allergic fungal rhinosinusitis(AFRS) and chronic sinusitis(CRS).
Method:
The iNOS expression was examined using immunohistochemistry in cases of AFRS as well as CRS.
Result:
The expression rate of iNOS in AFRS was significantly higher than in CRS.
Conclusion:
The increased expression of iNOS may involve in AFRS pathogenesis. Statistical difference between AFRS and CRS groups may indicate two groups may be distinct diseases entity.
Insights
Inducible nitric oxide synthase (iNOS) expression is significantly higher in allergic fungal rhinosinusitis (AFRS) mucus compared to chronic sinusitis (CRS). This suggests iNOS plays a role in AFRS and may distinguish it as a separate disease.
Area of Science:
- Immunology
- Otolaryngology
- Pathophysiology
Context:
- Allergic fungal rhinosinusitis (AFRS) and chronic sinusitis (CRS) are distinct upper airway inflammatory conditions.
- Nitric oxide synthase, particularly the inducible form (iNOS), is implicated in inflammatory processes.
Purpose:
- To compare the expression levels of iNOS in the sinonasal mucus of patients with AFRS and CRS.
- To elucidate the potential role of iNOS in the pathogenesis of AFRS.
Summary:
- Immunohistochemistry was employed to assess iNOS expression in sinonasal mucus samples from AFRS and CRS patients.
- A significantly higher rate of iNOS expression was observed in the AFRS group compared to the CRS group.
Impact:
- The findings suggest that elevated iNOS expression is a key feature of AFRS.
- The distinct iNOS expression patterns may support the classification of AFRS and CRS as separate disease entities, aiding in targeted therapeutic strategies.
