title: [Effect of erythromycin on apoptosis of epithelial cell in nasal polyps].
abstract: OBJECTIVE
  To study the effect of erythromycin on apoptosis and expression of Bax and Bcl-2 of epithelial cell in nasal polyps.
  
  
  METHODS
  Epithelial cells from thirty nasal polyps and fifteen inferior turbinates were cultured in Dulbecco Eagle and Ham F12 (1:1) and divided into two groups (one group were treated with Erythromycin). Apoptosis was detected by terminal deoxynucleotidyl transferase mediated dUTP nick end labeling and expression of Bcl-2 and Bax detected by immunohistochemistry at 1, 3, 5 days after culture.
  
  
  RESULTS
  The apoptosis indexes (AI) of epithelial cell in nasal polyps after cultured for 1, 3, 5 days with erythromycin were (33.23 +/- 6.50)%, (38.21 +/- 7.22)% and (52.63 +/- 7.86)% respectively. The AI of epithelial cell in inferior turbinates were (31.02 +/- 5.60)%, (32.13 +/- 7.15)% and (39.64 +/- 7.48)% respectively. There was significant difference between two groups at 5 day after culture (P < 0.05). Expression of Bax and Bcl-2 of epithelial cell was significantly higher in nasal polyps than that in inferior turbinates (P < 0.01). Expression of Bax of epithelial cell cultured with erythromycin was significantly higher than that in the controls (P < 0.05). Apoptosis was clearly promoted after 5 day culture with Erythromycin (P < 0.05).
  
  
  CONCLUSIONS
  Erythromycin promoted expression of Bax and apoptosis of epithelial cell in nasal polyps.
authors.affiliation: Department of Otorhinolaryngology, Third People's Hospital of Wenzhou, Wenzhou 325000, China.
authors.forename: Sai-Nan
authors.initials: SN
authors.lastname: Xu
authors.forename: Yu
authors.initials: Y
authors.lastname: Feng
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yi-Fei
authors.initials: YF
authors.lastname: Zhou
authors.forename: Lei
authors.initials: L
authors.lastname: Yang
authors.forename: Yong-Guo
authors.initials: YG
authors.lastname: Jin
mesh_terms: D000293:Adolescent; D000328:Adult; D017209:Apoptosis / Q000187:drug effects*; D016022:Case-Control Studies; D002460:Cell Line; D004847:Epithelial Cells / Q000187:drug effects* / Q000378:metabolism; D004917:Erythromycin / Q000494:pharmacology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009298:Nasal Polyps / Q000378:metabolism* / Q000473:pathology; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000378:metabolism*; D055815:Young Adult; D051028:bcl-2-Associated X Protein / Q000378:metabolism*
chemical_list: D019253:Proto-Oncogene Proteins c-bcl-2; D051028:bcl-2-Associated X Protein; D004917:Erythromycin