title: [Expression and significance of E-cadherin, CD44v6, and proliferating cell nuclear antigen in non-small cell lung cancer].
abstract: OBJECTIVE
  E-cadherin (E-cad), CD44v6 and proliferating cell nuclear antigen (PCNA) play important roles in invasion and metastasis of cancers. This study was to investigate the correlations of the expression of E-cad, CD44v6, and PCNA to the invasion, metastasis, and prognosis of non-small cell lung cancer (NSCLC).
  
  
  METHODS
  The expression of E-cad, CD44v6 and PCNA in 86 specimens of NSCLC and 40 specimens of adjacent normal tissues were detected by EnVision immunohistochemistry.
  
  
  RESULTS
  The high expression rate of E-cad was significantly lower in NSCLC than in adjacent normal tissues (53.5% vs. 80.0%, P<0.05). E-cad staining in NSCLC tissues was correlated to differentiation, lymph node metastasis and TNM stage (P<0.05). The high expression rate of CD44v6 was 44.2% in NSCLC, and 0 in adjacent normal tissues. CD44v6 staining in NSCLC tissues was correlated to classification, lymph node metastasis and TNM stage (P<0.05). The high expression rate of PCNA was 48.8% in NSCLC, and 0 in adjacent normal tissues. PCNA staining was correlated to lymph node metastasis (P<0.05). PCNA expression was negatively correlated to E-cad expression (r=-0.554, P<0.05), and positively correlated to CD44v6 expression (r=0.688, P<0.05). Univariate analysis indicated that E-cad, CD44v6, and PCNA were prognostic factors of NSCLC. Multivariate analysis showed that E-cad and TNM stage were independent prognostic indicators (P<0.05).
  
  
  CONCLUSIONS
  E-cad, CD44v6 and PCNA play important roles in invasion and metastasis of NSCLC. The expression of E-cad, CD44v6 and PCNA may be of prognostic value in patients with NSCLC.
authors.affiliation: Department of Pathology, Union Hospital, Tongji Medical College,Huazhong University of Science and Technology, Wuhan, Hubei, 430022, P. R. China. mimi027@sina.com.cn
authors.forename: Mi-Xia
authors.initials: MX
authors.lastname: Weng
authors.forename: Cui-Huan
authors.initials: CH
authors.lastname: Wu
authors.forename: Xiu-Ping
authors.initials: XP
authors.lastname: Yang
mesh_terms: D000328:Adult; D000368:Aged; D015820:Cadherins / Q000032:analysis* / Q000502:physiology; D002289:Carcinoma, Non-Small-Cell Lung / Q000401:mortality / Q000473:pathology*; D005260:Female; D006801:Humans; D018960:Hyaluronan Receptors / Q000032:analysis* / Q000502:physiology; D007150:Immunohistochemistry; D008175:Lung Neoplasms / Q000401:mortality / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D011379:Prognosis; D018809:Proliferating Cell Nuclear Antigen / Q000032:analysis* / Q000502:physiology
chemical_list: C112697:CD44v6 antigen; D015820:Cadherins; D018960:Hyaluronan Receptors; D018809:Proliferating Cell Nuclear Antigen