title: [The expression and significance of Fas/FasL in nasal polyps tissue].
abstract: OBJECTIVE
  To explore the induction and control effect of Fas/FasL system in the occurrence and evolution of nasal polyps tissue.
  
  
  METHODS
  Nasal polyps samples of 40 cases and 5 healthy adults were examined for the genic expressions of factors Fas and FasL by using the method of reverse transcription polymerase chain reaction (RT-PCR).
  
  
  RESULTS
  The results indicated that the expressions of FasL in nasal polyps was high, and the expressions of Fas was low. The average index of correlative quotient was (0.62+/-0.74), (0.14+/-0.25). The positive percentage in epithelial cells of normal nasal mucosa was significant higher than that of nasal polyps. There was no expressions of FasL in normal nasal mucosa, but in nasal polyps there were different degree expressions, mostly in epithelial cells.
  
  
  CONCLUSIONS
  The downwards expression of Fas and the upwards expression of FasL in nasal polyps may inhibit the cellular apoptosis and the enhanced hyperplasia.
authors.affiliation: Department of Otorhinolaryngology, People' Hospital of Linyi, Linyi, 276003, China. lq_liqin@126.com
authors.forename: Qin
authors.initials: Q
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Ming
authors.forename: Hongping
authors.initials: H
authors.lastname: Zhang
authors.forename: Xuemei
authors.initials: X
authors.lastname: Chen
authors.forename: Jingfen
authors.initials: J
authors.lastname: Jian
authors.forename: Daliang
authors.initials: D
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D017209:Apoptosis; D002648:Child; D053222:Fas Ligand Protein / Q000378:metabolism*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009298:Nasal Polyps / Q000378:metabolism* / Q000473:pathology; D055815:Young Adult; D019014:fas Receptor / Q000378:metabolism*
chemical_list: C491901:FAS protein, human; C505661:FASLG protein, human; D053222:Fas Ligand Protein; D019014:fas Receptor