[Vascular cell adhesion molecule-1, eotaxin and vascular endothelial growth factor in nasal polyps after endoscopic surgery].
OBJECTIVE
To study the different expression of VCAM-1, eotaxin and VEGF in nasal polyp tissues and in the nasal mucosa of the operative cavity after endoscopic surgery and its significance.


METHODS
Paraffin sections of nasal polyps and the nasal mucosa of the operative cavity were studied with immunohistochemical technique and HE staining.


RESULTS
(1) Abundant eosinophils were observed in the nasal polyps, however, it was rarely seen in the nasal mucosa of the operative cavity (t = 2.891, P <0.05). (2) The positive expression of VCAM-1 and eotaxin was in nasal polyps and nasal mucosa of operative cavity, and both of the positive area were not statistically significant (t = - 2.051, P > 0.05), but their average density of light was decreased in the nasal mucosa of the operative cavity (t = 3.670, P = 0.05). The positive glandular of eotaxin were increased after endoscopic surgery (t = -2.899, P < 0.05). (3) Expression of VEGF was similar in both groups (t = - 0.037, 0.825, P > 0.05, respectively).


CONCLUSIONS
(1) It is suggested that the nasal mucosa of the operative cavity was different from the nasal polyps. (2) The positive expression of VCAM-1 and eotaxin in the nasal mucosa of the operative cavity after endoscopic surgery indicates that eotaxin may up-regulate the expression of VCAM-1 in vessel endothelium and promote adhesion and migration of eosinophils, as a result, to lead to the recurrence of nasal polyps. The glandulous expression of eotaxin may play a key role in the early stage. (3) The expression of VEGF in nasal mucosa after surgery may contribute to the growth of blood vessel and induce increasing of vascular permeability and tissue edema. This may be an important factor in the process of nasal polyp recurrence.
Hu
Hai-qing
HQ
Department of Otorhinolaryngology, The First Affiliated Hospital, Inner Mongolia Medical College, Huhhot, China. haiqinghu5@hotmail.com
Li
Ling-xiang
LX
Sun
Qin-nuan
QN
D000293:Adolescent; D000328:Adult; D000368:Aged; D054413:Chemokine CCL11 / Q000378:metabolism*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009297:Nasal Mucosa / Q000378:metabolism*; D009298:Nasal Polyps / Q000378:metabolism*; D019010:Vascular Cell Adhesion Molecule-1 / Q000378:metabolism*; D042461:Vascular Endothelial Growth Factor A / Q000378:metabolism*; D055815:Young Adult
C515456:CCL11 protein, human; D054413:Chemokine CCL11; C467484:VEGFA protein, human; D019010:Vascular Cell Adhesion Molecule-1; D042461:Vascular Endothelial Growth Factor A