[Expressions of vascular endothelial growth factor and basic fibroblast growth factor in nasal polyp and its role].
OBJECTIVE
To evaluate the role of vascular endothelial growth factor (VEGF) and basic fibroblast growth factor(bFGF) in the pathophysiology of nasal polyp.


METHODS
Thirty-nine patients with nasal polyp were divided into two groups: group A(representing type 1 and type 2 phase 1-2) and group B (representing type 2 phase 3 and type 3). The expression of VEGF and and bFGF in both groups were studied with immunohistochemical method.


RESULTS
VEGF and bFGF were not detected in norms. The detection rates of VEGF and bFGF were 59%, 41%, and 71%, 80% in group A and group B respectively. The positive rate and the number of positive cells were higher significantly in group B than that in group A. VEGF and bFGF were located mainly in the inflammatory cells and epithelial cells around the basilar membrane and inflammatory cells and endothelial cells around the vessel.


CONCLUSIONS
The overexpression of VEGF and bFGF in nasal polyp may contribute to the growth of vessels, accumulation of inflammatory cells, as a result, to enhance the development of nasal polyposis. This phenomenon maybe an important histological mark distinguishing ordinary polyp from polyposis.
Li
H
H
Department of Otorhinolaryngology, Third Hospital of Sen-Yat-Sen University of Medical Sciences, Guangzhou 510630, China. lhb73@263.net
Xu
G
G
Li
Y
Y
Xie
M
M
Xu
R
R
D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D016222:Fibroblast Growth Factor 2 / Q000096:biosynthesis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009298:Nasal Polyps / Q000378:metabolism* / Q000473:pathology; D042442:Vascular Endothelial Growth Factors / Q000096:biosynthesis*
D042442:Vascular Endothelial Growth Factors; D016222:Fibroblast Growth Factor 2