title: [Expression and significance of COX-2 and S-100 positive dendritic cell in laryngeal carcinoma].
abstract: OBJECTIVE
  To explore the expression of cyclooxygenase-2 (COX-2) and S-100 positive dendritic cell in laryngeal carcinoma tissue and their clinical significance.
  
  
  METHODS
  Sixty-five samples of laryngeal carcinoma and thirty-four biopsies of adjacent noncancerous tissue were obtained. Immunohistochemical technique (SP method) was used to detect the expression of COX-2 and S-100 positive dendritic cell, and the relationship of their expression with clinical pathological parameters and prognosis was analyzed.
  
  
  RESULTS
  The rates of COX-2 expression were 63.08% (41/65)and 14.70% (5/34) in laryngeal carcinoma and control group, respectively. The difference was significant (P < 0.05). The positive expression of COX-2 was correlated with T and clinical stage in laryngeal carcinoma(all P < 0.05). The rates of S-100 positive dendritic cell expression were 61.54% (40/65)and 0 in laryngeal carcinoma and control group, respectively. The difference was significant (P < 0.05). S-100 positive dendritic cells showed significant differences between early and late clinical stage and lymph node metastasis (all P < 0.05). Kaplan-Meier survival analysis showed that patients with positive expression of COX-2 and S-100 positive dendritic cell had worse disease-free and overall survival (P < 0.05). Cox regression analysis showed that S-100 positive dendritic cell was indicated as an independent prognostic factor for survival(P < 0.05).
  
  
  CONCLUSIONS
  COX-2 and S-100 positive dendritic cell are highly expressed in laryngeal carcinoma tissue. It suggests that the expression of COX-2 and S-100 positive dendritic cell is related to the process of carcinogenesis and may be the important indicators in laryngeal carcinoma for prognosis.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Affiliated Hospital of Luzhou Medical College, Luzhou, 646000, China. qin-lzm@163.com
authors.forename: Gang
authors.initials: G
authors.lastname: Qin
authors.forename: Zhuoping
authors.initials: Z
authors.lastname: Liang
authors.forename: Ling
authors.initials: L
authors.lastname: Yu
authors.forename: Zuyao
authors.initials: Z
authors.lastname: Chen
authors.forename: Wenjun
authors.initials: W
authors.lastname: Liu
authors.forename: Wanrong
authors.initials: W
authors.lastname: Li
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000378:metabolism* / Q000473:pathology; D051546:Cyclooxygenase 2 / Q000378:metabolism*; D003713:Dendritic Cells / Q000378:metabolism* / Q000473:pathology; D005260:Female; D006801:Humans; D007822:Laryngeal Neoplasms / Q000378:metabolism* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D009418:S100 Proteins / Q000378:metabolism*
chemical_list: D009418:S100 Proteins; D051546:Cyclooxygenase 2; C496540:PTGS2 protein, human