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[Expression and significance of vascular permeability factor in nasal polyps]
1Third Clinical College, Bethune University of Medical Sciences, Changchun 130031.
Objective:
To study the expression and significance of vascular permeability factor(VPF) in nasal polyps.
Methods:
Expression of VPF and its receptor flk-1 in nasal polyps from 9 patients and inferior turbinates from 8 patients with chronic rhinitis were prospectively studied with immunohistochemistry. Each tissue section was observed under optical microscope.
Results:
The VPF positivity in vascular endothelium and in gland cell was significantly higher in nasal polyps than in inferior turbinates (P < 0.01 and P < 0.05, respectively). The flk-1 labeling index of vascular endothelium was significantly higher in nasal polyps than that in inferior turbinates (P < 0.01).
Conclusion:
VPF may play a key role in the formation of heavy edema of nasal polyps.
Insights
Vascular permeability factor (VPF) is significantly elevated in nasal polyps, suggesting it drives the severe edema characteristic of this condition.
Area of Science:
- Rhinology
- Pathology
- Molecular Biology
Context:
- Nasal polyps are inflammatory masses associated with chronic rhinosinusitis.
- The pathogenesis of nasal polyp edema is not fully understood.
- Vascular permeability factor (VPF) is implicated in vascular leakage and edema formation.
Purpose:
- To investigate the expression of VPF and its receptor, flk-1, in nasal polyps.
- To determine the correlation between VPF expression and polyp formation.
Summary:
- Immunohistochemistry revealed significantly higher VPF positivity in the vascular endothelium and gland cells of nasal polyps compared to inferior turbinates.
- The flk-1 labeling index in vascular endothelium was also significantly elevated in nasal polyps.
- These findings indicate increased VPF activity in nasal polyps.
Impact:
- VPF may be a key mediator of the significant edema observed in nasal polyps.
- Targeting VPF could offer a therapeutic strategy for managing nasal polyp edema.
- Further research into VPF's role can advance understanding of polyp pathogenesis.