Cyclooxygenase-2 overexpression and vascular endothelial growth factor expression in pharyngeal tissue of patients with OSAHS correlates with angiogenesis.
- Author:
Hai-Huan ZENG
1
;
Wei DONG
;
Yu-Peng XIE
;
Ling-Jie LIU
;
Liang-Xing WANG
Author Information
- Publication Type:Journal Article
- MeSH: Adult; Cyclooxygenase 2; genetics; metabolism; Female; Humans; Male; Middle Aged; Neovascularization, Pathologic; Pharynx; blood supply; metabolism; Sleep Apnea, Obstructive; metabolism; physiopathology; Vascular Endothelial Growth Factor A; genetics; metabolism
- From: Chinese Journal of Applied Physiology 2011;27(2):210-213
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo reseach the correlations between cyclooxygenase-2 (COX-2) and vascular endothelial growth factor (VEGF) expressions and angiogenesis in pharyngeal tissue of patients with obstructive sleep apnea hypopnea syndrome (OSAHS).
METHODSBiopsies were obtained by uvulopalatopharyngoplasty from 40 patients with mild to severe OSAHS. Control specimens of palatopharyngeal and palatoglossal arch mucosa were retreved from 6 patients with chronic tonsillitis and proved have no related disorders. HE was used to observe the changes of pharyngeal tissue, immunohistochemical staining with antibodies against COX-2, VEGF, microvessel density (MVD) (marked with CD34).
RESULTSCOX-2 and VEGF mainly expressed at pavement-epithelium and glandular epithelium of pharyngeal tissue, and stronger COX-2 and VEGF expression was found in midrange and severe OSAHS than mild and control group (P < 0.01), so as MVD. COX-2 expression was correlated positively with VEGF expression, and had significant correlation with MVD. VEGF expression had the same correlation with MVD. These three targets had considerable relation with apnea hypopnea index (AHI) and lowest O2 saturation at night.
CONCLUSIONThere was angiogenesis which had important relationship with hypoxia degree in patients of OSAHS, and COX-2 and VEGF play a crucial role in its development.
