title: Light and electron microscopic evaluation of antileukotriene therapy for experimental rat endometriosis.
abstract: OBJECTIVE
  To evaluate the effect of antileukotriene therapy, we examined the morphologic alteration in experimental rat endometriosis both with and without leukotriene receptor antagonist treatment.
  
  
  METHODS
  Light and electron microscopic analysis.
  
  
  METHODS
  Tochigi Institute of Clinical Pathology, Japan.
  
  
  METHODS
  Female Sprague-Dawley rats maintained on a schedule of 12 hours of light and 12 hours of dark for 2 weeks.
  
  
  METHODS
  Uterine transplants were attached to rat peritoneum via the surgical autotransplantation technique. After autotransplantation, the rats were given daily administration of leukotriene receptor antagonist, and the lesions were examined at 4 and 7 days after autotransplantation.
  
  
  METHODS
  The morphologic comparison of rat endometriosis with and without antileukotriene therapy.
  
  
  RESULTS
  In the rats treated with leukotriene receptor antagonist, a significant decrease in stromal proliferation was observed when compared with nontreated rats. The treated rats showed not only the suppression of infiltration and activation of mast cells but also widespread apoptosis of proliferative fibroblasts in the lesions.
  
  
  CONCLUSIONS
  Our results reveal that a leukotriene receptor antagonist has significant therapeutic value for the treatment of rat endometriosis. It is likely that antileukotriene therapy would be efficacious in the treatment and prevention of human endometriosis.
authors.affiliation: Department of Pathology, Tochigi Institute of Clinical Pathology, 2308-3 Minamiakatsuka, Nogi, Shimotsuga-gun, Tochigi 329-0112, Japan.
authors.forename: Tomomi
authors.initials: T
authors.lastname: Ihara
authors.forename: Ichiro
authors.initials: I
authors.lastname: Uchiide
authors.forename: Masao
authors.initials: M
authors.lastname: Sugamata
mesh_terms: D000818:Animals; D017209:Apoptosis; D002455:Cell Division / Q000187:drug effects; D004715:Endometriosis / Q000473:pathology* / Q000503:physiopathology; D005260:Female; D005347:Fibroblasts / Q000473:pathology; D007211:Indoles; D020024:Leukotriene Antagonists / Q000494:pharmacology*; D008407:Mast Cells / Q000473:pathology; D008854:Microscopy, Electron; D010532:Peritoneal Diseases / Q000473:pathology* / Q000503:physiopathology; D010537:Peritoneum / Q000473:pathology; D048448:Phenylcarbamates; D051381:Rats; D017207:Rats, Sprague-Dawley; D017154:Stromal Cells / Q000473:pathology; D013449:Sulfonamides; D014105:Tosyl Compounds / Q000494:pharmacology*
chemical_list: D007211:Indoles; D020024:Leukotriene Antagonists; D048448:Phenylcarbamates; D013449:Sulfonamides; D014105:Tosyl Compounds; C062735:zafirlukast