title: [Role of epithelial cell proliferation and apoptosis in human middle ear cholesteatoma].
abstract: OBJECTIVE
  To determine the role of middle ear epithelial cell proliferation and apoptosis in the pathogenesis of human cholesteatoma.
  
  
  METHODS
  33 cholesteatoma, 25 auditory meatal skin of cholesteatoma and 10 normal human auditory meatal skin were detected by using immunohistochemistry analysis for cell proliferation with Ki 67, PCNA and PCNA antibody and TUNTEL methods for cell apoptosis.
  
  
  RESULTS
  PCNA expression and apoptosis cells exists different quantity in cholesteatoma, auditory metal skin of cholesteatoma and normal human auditory meatal skin and distributes in various cell layer. There were positive correlation between p53 and PCNA as well as negative correlation between p53 and apoptosis.
  
  
  CONCLUSIONS
  The dyregulation of proliferation and apoptosis in keratinocyte is important in pathogenesis of cholesteatoma.
authors.affiliation: Department of Otolaryngology Head and Neck Surgery, First Clinical College of Jiling University, Changchun 130021.
authors.forename: W
authors.initials: W
authors.lastname: Zhu
authors.forename: D
authors.initials: D
authors.lastname: Huang
authors.forename: L
authors.initials: L
authors.lastname: Jing
authors.forename: F
authors.initials: F
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D017209:Apoptosis; D002455:Cell Division / Q000502:physiology; D018424:Cholesteatoma, Middle Ear / Q000473:pathology*; D004847:Epithelial Cells / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018809:Proliferating Cell Nuclear Antigen; D016159:Tumor Suppressor Protein p53
chemical_list: D018809:Proliferating Cell Nuclear Antigen; D016159:Tumor Suppressor Protein p53