title: [Overexpression of COX-2 and its clinical significance in non-small cell lung cancer].
abstract: OBJECTIVE
  To study the relations among COX-2 expression in non-small cell lung cancer (NSCLC), its clinical characteristics and brognosis.
  
  
  METHODS
  Immunostaining was performed with COX-2 antibody to the surgically resected tissue samples from 79 patients with NSCLC. Vessel epithelium cell COX-2 expression was taken as positive control.
  
  
  RESULTS
  The positive rate of adenocarcinoma and squamous cell carcinoma was 85% and 57%, respectively (P = 0.013). COX-2 expression was associated with the extent of adenocarcinoma differentiation, tumor size, and TNM period, but not with the extent of squamous cell carcinoma differentiation. In the COX-2 positive group, the 5-year survival rate and a median survival time were 27.1% and 53 months; however in the negative group they were 52.0% and 61 months (P = 0.029).
  
  
  CONCLUSIONS
  Invasive development of NSCLC is related to inceased expression of COX-2. COX-2 overexpression may be one of the risky factors for the prognosis of NSCLC.
authors.affiliation: Department of Thoracic Surgery, Beijing Friendship Hospital, Capital University of Medical Science, Beijing 100050, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Tian
authors.forename: Tian-you
authors.initials: TY
authors.lastname: Wang
authors.forename: Min
authors.initials: M
authors.lastname: Gong
authors.forename: Xiao-mei
authors.initials: XM
authors.lastname: Lu
authors.forename: Jian
authors.initials: J
authors.lastname: Hu
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Chang-huai
authors.initials: CH
authors.lastname: Zhang
mesh_terms: D000328:Adult; D000368:Aged; D002289:Carcinoma, Non-Small-Cell Lung / Q000201:enzymology* / Q000401:mortality / Q000473:pathology; D051546:Cyclooxygenase 2; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007527:Isoenzymes / Q000032:analysis*; D008175:Lung Neoplasms / Q000201:enzymology* / Q000401:mortality / Q000473:pathology; D008297:Male; D008565:Membrane Proteins; D008875:Middle Aged; D011379:Prognosis; D011451:Prostaglandin-Endoperoxide Synthases / Q000032:analysis*; D015996:Survival Rate
chemical_list: D007527:Isoenzymes; D008565:Membrane Proteins; D051546:Cyclooxygenase 2; C496540:PTGS2 protein, human; D011451:Prostaglandin-Endoperoxide Synthases