title: [The expression of E-cadherin and occludin in epithelium of chronic rhinosinositis and its significance].
abstract: OBJECTIVE
  To explore the expression and distribution of barrier molecules in epithelium of various types of chronic rhinosinusitis and its significance.
  
  
  METHODS
  There were four groups including control (13 samples), Eos-CRSwNP (10 samples), nonEos-CRSwNP (14 samples), CRSsNP (11 samples). The method of immunohistochemistry was used to detect the protein expression of E-cadherin and occludin in nasal mucosa.
  
  
  RESULTS
  There was positive staining extensively distributed among cells in nasal mucosa. There was no significant difference in these groups. However, the occludin mainly located on the top of epithelial cells. In normal nasal mucosa, the positive expression was continuous, however, it was discontinuous both in CRSwNP and CRSsNP groups.
  
  
  CONCLUSIONS
  There was no E-cadherin loss in the progression of pathophysiology of chronic rhinosinusitis. But the loss of occludin may correlate to the dysfunction of epithelial barrier, which was beneficial for the pathogen invasion.
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, 430030, China.
authors.forename: Lili
authors.initials: L
authors.lastname: Shi
authors.forename: Xiang
authors.initials: X
authors.lastname: Lu
authors.forename: Zheng
authors.initials: Z
authors.lastname: Liu
authors.forename: Yonghua
authors.initials: Y
authors.lastname: Cui
mesh_terms: D015820:Cadherins / Q000378:metabolism*; D002908:Chronic Disease; D004847:Epithelial Cells; D004848:Epithelium / Q000378:metabolism*; D006801:Humans; D007150:Immunohistochemistry; D009297:Nasal Mucosa; D062793:Occludin / Q000378:metabolism*; D012220:Rhinitis / Q000378:metabolism*; D012852:Sinusitis / Q000378:metabolism*
chemical_list: D015820:Cadherins; D062793:Occludin