[Expression of nuclear factor-kappa B mRNA, inducible nitric oxide synthase and interleukin-6 in nasal polyp and its
Objective:
To evaluate the expression and significance of nuclear factor-kappa B (NF-kappa B) mRNA, inducible nitric oxide synthase(iNOS) and interleukin-6 (IL-6) in the pathophysiology of nasal polyp(NP).
Methods:
The specimens from 59 nasal polyps (NP) and 20 inferior turbinates (IT) were studied by in situ hybridization for NF-kappa B mRNA, and by immunohistochemistry for iNOS and IL-6. Tissue sections were observed under optical microscope.
Results:
NF-kappa B mRNA, iNOS and IL-6 overexpressions were localized mainly to the nasal polyp epithelium, the various inflammatory cells, in submucosal endothelial cells around the vessel and in submucosal glands. The positive frequency of activation of NF-kappa B mRNA was higher in NP (54.24%) than in IT (P < 0.01), whereas the positive frequency of iNOS and IL-6 overexpression were higher in NP (62.71% and 64.41%) than in IT (P < 0.01). Eosinophils and neutrophils in NP were higher than in IT (P < 0.01).
Conclusion:
These results suggest that NF-kappa B, iNOS and IL-6 are strongly correlated with the formation of NP. NF-kappa B, iNOS and IL-6 may act as anti-apoptotic molecules in eosinophils and neutrophils that may be responsible for the recruitment of inflammatory cells, particularly eosinophils, through the initiation of the transcriptional pathway of the related cytokines. NF-kappa B might play a key role in the pathogenesis of NP process and therefore is a potential target for medical treatment and new therapeutic intervention.
Insights
Nuclear factor-kappa B (NF-kappa B), inducible nitric oxide synthase (iNOS), and interleukin-6 (IL-6) are significantly elevated in nasal polyps, suggesting their crucial role in the condition's development and potential as therapeutic targets.
Area of Science:
- Molecular biology
- Immunology
- Pathophysiology
Context:
- Nasal polyps (NP) are inflammatory growths in the nasal cavity.
- The underlying molecular mechanisms driving NP formation require further elucidation.
Purpose:
- To investigate the expression and significance of nuclear factor-kappa B (NF-kappa B) mRNA, inducible nitric oxide synthase (iNOS), and interleukin-6 (IL-6) in the pathophysiology of nasal polyps.
Summary:
- NF-kappa B mRNA, iNOS, and IL-6 were overexpressed in nasal polyp tissues compared to inferior turbinates.
- These molecules were localized in nasal polyp epithelium, inflammatory cells, submucosal vessels, and glands.
- Elevated levels of NF-kappa B, iNOS, and IL-6 correlate with increased eosinophils and neutrophils in nasal polyps.
Impact:
- NF-kappa B, iNOS, and IL-6 may promote inflammatory cell survival and recruitment, contributing to nasal polyp pathogenesis.
- NF-kappa B, in particular, may be a key factor in NP development and a potential therapeutic target.
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