Expression, localization, and significance of vascular permeability/vascular endothelial growth factor in nasal polyps

Details

Serval ID
serval:BIB_BB9258472749
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Expression, localization, and significance of vascular permeability/vascular endothelial growth factor in nasal polyps
Journal
American Journal of Rhinology
Author(s)
Gosepath  J., Brieger  J., Lehr  H. A., Mann  W. J.
ISSN
1050-6586 (Print)
Publication state
Published
Issued date
2005
Volume
19
Number
1
Pages
7-13
Notes
DA - 20050329LA - eng PT - Comparative Study PT - Journal ArticleRN - 0 (Biological Markers)RN - 0 (Vascular Endothelial Growth Factor A)SB - IM
Abstract
BACKGROUND: The exact etiologic mechanisms leading to the formation of nasal polyps have remained largely obscure. A key phenomenon of this specific type of chronic inflammatory disease in nasal respiratory mucosa is remarkable edema. Vascular permeability/vascular endothelial growth factor (VPF/VEGF) plays an important role in inducing angiogenesis and modulating capillary permeability. OBJECTIVE: To study the expression and localization of VPF/ VEGF as a putative key factor in nasal polyp development. METHODS: Specimens of nasal polyps (n = 12) were harvested during endonasal sinus surgery in patients with polypous chronic rhinosinusitis. Specimens of healthy nasal respiratory mucosa (n = 12) served as controls and were obtained from inferior turbinates of patients undergoing surgery for nasal obstruction without signs and symptoms of inflammatory disease. Frozen sections were immunohistochemically stained for VPF/VEGF and quantitatively analyzed, using computer-based image analysis. RESULTS: The expression of VPF/VEGF in specimens of nasal polyps was significantly stronger than in specimens of healthy nasal mucosa of controls. VPF/VEGF in polypous tissue was mainly localized in vascular endothelial cells, in basal membranes and perivascular spaces, and in epithelial cells. CONCLUSION: The markedly increased expression in nasal polyps as opposed to healthy nasal mucosa suggests that VPF/VEGF may play a significant role in both the formation of nasal polyps and in the induction of heavy tissue edema. This finding is discussed with respect to the differential expression of cyclooxygenase (COX) isoenzymes-1 and -2 (COX-1 and COX-2) in nasal polyps was significantly stronger than in specimens of healthy nasal mucosa of controls. VPF/VEGF in polypous tissue was mainly localized in vascular endothelial cells, in basal membranes and perivascular spaces, and in epithelial cells. Conclusion: The markedly increased expression in nasal polyps as opposed to healthy nasal mucosa suggests that VPF/VEGF may play a significant role in both the formation of nasal polyps and in the induction of heavy tissue edema. This finding is discussed with respect to the differential expression of cyclooxygenase (COX) isoenzymes-1 and -2 (COX-1 and COX-2) in nasal polyps
Keywords
Adult/Biological Markers/metabolism/Capillary Permeability/Endothelium,Vascular/Pathology/Female/Humans/Image Processing,Computer-Assisted/Immunohistochemistry/methods/Male/Nasal Mucosa/blood supply/Nasal Polyps/surgery/Neovascularization,Pathologic/Vascular Endothelial Growth Factor A/biosynthesis
Pubmed
Web of science
Create date
29/01/2008 18:36
Last modification date
20/08/2019 15:29
Usage data