title: [Expression and significance of STAT3 and VEGF with MVD in the nasal polyps].
abstract: OBJECTIVE
  To investigate microvessel density (MVD) and expressions of phosphor-STAT3 and vascular endothelial growth factor (VEGF) in nasal polyps, to explore their pathogenetic correlations.
  
  
  METHODS
  All selected cases were measured up the standard of enrollment. Thirty samples of nasal polyps were obtained from patients undergoing nasal polypectomy, and 10 samples of inferior turbinate tissues were from patients undergoing nasal septal construction. p-STAT3,VEGF and MVD in nasal polyp tissues from 30 nasal polyposis patients and 10 samples of inferior turbinate tissues were detected with immunohistochemistry (sp) method.
  
  
  RESULTS
  In nasal polyp tissues, The positive rates of p-STAT3 and VEGF expression were 60% and 70% respectively, all were significantly higher in nasal polyps than in control inferior turbinates (P < 0.01). MVD was significantly higher in nasal polyps than in control inferior turbinates (22.78 +/- 7.89 vs 7.12 +/- 2.84, P < 0.01). p-STAT3 expression was positively correlated with VEGF expression and MVD.
  
  
  CONCLUSIONS
  p-STAT3, VEGF and MVD were overexpressed in the tissues of nasal polyps, and p-STAT3 expression was positively correlated with VEGF expression and MVD; p-STAT3 was positively correlated with the neovascularization of nasal polyps, The inhibition of STAT3 pathway may inhibit the neovascularization, and then inhibit the formation and recurrence of the nasal polyps.
authors.affiliation: Department of Otorhinolaryngology, the First Affiliated Hospital of Jinan University, Guangzhou, 510630, China. yyzm333@163.com
authors.forename: Qingsong
authors.initials: Q
authors.lastname: Cao
authors.forename: Tao
authors.initials: T
authors.lastname: Zhang
authors.forename: Lixin
authors.initials: L
authors.lastname: Jiang
authors.forename: Lihua
authors.initials: L
authors.lastname: Wang
authors.forename: Sijin
authors.initials: S
authors.lastname: Luo
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D055806:Microvessels; D008875:Middle Aged; D009298:Nasal Polyps / Q000378:metabolism* / Q000473:pathology*; D009389:Neovascularization, Pathologic; D050796:STAT3 Transcription Factor / Q000378:metabolism*; D042461:Vascular Endothelial Growth Factor A / Q000378:metabolism*; D055815:Young Adult
chemical_list: D050796:STAT3 Transcription Factor; C494086:STAT3 protein, human; C467484:VEGFA protein, human; D042461:Vascular Endothelial Growth Factor A