title: The preventive effect of mitomycin-C on the external auditory canal fibrosis in an experimentally induced animal model.
abstract: OBJECTIVE
  The aim of this study was to investigate the preventive effect of mitomycin-C (MMC) on external auditory canal (EAC) fibrosis in an animal model.
  
  
  METHODS
  This is a randomized, controlled animal study.
  
  
  METHODS
  Sixteen guinea pigs were used for this study. After the skin of cartilaginous EAC was injured with an electrocautery, the cottonoid soaked in MMC solution with concentration of 0.4 mg/mL was topically applied for 5 minutes to the injured EAC in an MMC-treated group (n = 8). In addition, saline was applied in the control group (n = 8). At 4 weeks after injury, postsurgical changes of EAC were evaluated by histologic examination.
  
  
  RESULTS
  External auditory canal fibrosis was induced by injury with electrocautery. The MMC-treated group showed less degree of fibrosis without differences in epithelialization and inflammatory cell infiltration.
  
  
  CONCLUSIONS
  This study suggests that MMC can be helpful in preventing EAC fibrosis after injury.
authors: Department of Otolaryngology-Head and Neck Surgery, Chungnam National University College of Medicine, Daejeon, Republic of Korea.
authors: Yeo-Hoon
authors: YH
authors: Yoon
authors: Jae Yong
authors: JY
authors: Park
authors: Yong Ho
authors: YH
authors: Park
mesh_terms: D000818:Animals; D000903:Antibiotics, Antineoplastic / Q000627:therapeutic use*; D003251:Constriction, Pathologic / Q000209:etiology / Q000473:pathology / Q000517:prevention & control; D004195:Disease Models, Animal; D004424:Ear Canal / Q000473:pathology* / Q000601:surgery; D004564:Electrocoagulation; D005355:Fibrosis / Q000209:etiology / Q000473:pathology / Q000517:prevention & control; D006168:Guinea Pigs; D008297:Male; D016685:Mitomycin / Q000627:therapeutic use*; D014945:Wound Healing
chemical_list: D000903:Antibiotics, Antineoplastic; D016685:Mitomycin