title: Significant increase in prostaglandin E-main urinary metabolite by laxative administration: comparison with ulcerative colitis.
abstract: OBJECTIVE
  To assess the production of prostaglandin E(2), an important chemical mediator in diarrhea induced by laxative administration, a prostaglandin E-main urinary metabolite (7alpha-hydroxy-5,11-diketotetranor-prosta-1,16-dioic acid, PGE-MUM) was measured in healthy volunteers and compared with the values of patients with ulcerative colitis.
  
  
  METHODS
  PGE-MUM was determined by a simplified immunoassay of bicyclic PGE-MUM and analyzed for the influence of laxative administration and active/remission phases of ulcerative colitis.
  
  
  RESULTS
  Administration of laxatives induced a significant increase in PGE-MUM in healthy volunteers. A significant elevation was also found in the active as compared with the remission phase of ulcerative colitis. The PGE-MUM levels were significantly correlated with our modified Talstad scores, clinical disease activity indices in ulcerative colitis. It was confirmed by time course studies of individual patients that changes in PGE-MUM correlated well with colitis activity.
  
  
  CONCLUSIONS
  Laxative administration induces production of prostaglandin E(2) as one of the chemical mediators, although its production grade is relatively low as compared with ulcerative colitis in the active phase.
authors.affiliation: Department of Clinical Pathology, Japanese Red Cross Medical Center, Hiroo, Shibuya-ku, Tokyo, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Fujiwara
authors.forename: I
authors.initials: I
authors.lastname: Okayasu
authors.forename: M
authors.initials: M
authors.lastname: Oritsu
authors.forename: J
authors.initials: J
authors.lastname: Komatsu
authors.forename: M
authors.initials: M
authors.lastname: Yoshitsugu
authors.forename: Y
authors.initials: Y
authors.lastname: Katoh
authors.forename: T
authors.initials: T
authors.lastname: Bandoh
authors.forename: H
authors.initials: H
authors.lastname: Toyoshima
authors.forename: Y
authors.initials: Y
authors.lastname: Kase
authors.forename: K
authors.initials: K
authors.lastname: Sugihara
authors.forename: J
authors.initials: J
authors.lastname: Kanno
authors.forename: Y
authors.initials: Y
authors.lastname: Hayashi
mesh_terms: D000368:Aged; D000880:Anthraquinones / Q000008:administration & dosage*; D002400:Cathartics / Q000008:administration & dosage*; D019343:Citric Acid / Q000008:administration & dosage*; D003093:Colitis, Ulcerative / Q000652:urine*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009942:Organometallic Compounds / Q000008:administration & dosage*; D011466:Prostanoic Acids / Q000652:urine*; D012676:Senna Extract; D000081226:Sennosides; D018709:Statistics, Nonparametric
chemical_list: D000880:Anthraquinones; D002400:Cathartics; D009942:Organometallic Compounds; D011466:Prostanoic Acids; D000081226:Sennosides; C037830:11 alpha-hydroxy-9,15-dioxo-2,3,4,5,20-pentanor-19-carboxyprostanoic acid; D019343:Citric Acid; D012676:Senna Extract; C110422:magnesium citrate