title: Protective effect of alpha-tocopherol in head and neck cancer radiation-induced mucositis: a double-blind randomized trial.
abstract: BACKGROUND
  the study was designed to test whether vitamin E (VE) provides oral mucosal protection in patients with irradiated cancers of the head and neck.
  
  
  METHODS
  Fifty-four patients with cancer of the oral cavity and oropharynx were randomly assigned to rinse the oral cavity in an oil solution containing either VE or placebo before every conventional fraction of 2 Gy and again 8 to 12 hours later during the 5 to 7 weeks of radiotherapy (RT).
  
  
  RESULTS
  Thirty-six events/167 patient-weeks (21.6%) and 54 events/161 patient-weeks (33.5%) of symptomatic mucositis were observed in VE and placebo groups, respectively (p =.038). VE reduced the risk by 36%. Subjective data at the end of the treatment revealed that VE decreased pain grades 2 to 3 during RT (3 of 28 patients vs 14 of 26 patients, p =.0001). No significant influence was detected in survival.
  
  
  CONCLUSIONS
  VE decreased the incidence of symptomatic oral radio-induced mucositis in patients with cancer of the oropharynx and oral cavity.
authors.affiliation: Department of Radiation Oncology, Hospital Sao Lucas da PUC, Pontificia Universidade Catolica do Rio Grande do Sul (PUCRS), Av. Ipiranga 6690, Porto Alegre, RS 90610-000, Brazil. prferreira@hcpa.ufrgs.br
authors.forename: Paulo Renato
authors.initials: PR
authors.lastname: Ferreira
authors.forename: James Freitas
authors.initials: JF
authors.lastname: Fleck
authors.forename: Ada
authors.initials: A
authors.lastname: Diehl
authors.forename: Daniela
authors.initials: D
authors.lastname: Barletta
authors.forename: Aroldo
authors.initials: A
authors.lastname: Braga-Filho
authors.forename: Antonio
authors.initials: A
authors.lastname: Barletta
authors.forename: Ligia
authors.initials: L
authors.lastname: Ilha
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000532:radiotherapy*; D004311:Double-Blind Method; D004435:Eating / Q000528:radiation effects; D005260:Female; D006258:Head and Neck Neoplasms / Q000532:radiotherapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009061:Mouth Mucosa / Q000528:radiation effects*; D009067:Mouthwashes; D010146:Pain / Q000517:prevention & control; D011832:Radiation Injuries / Q000517:prevention & control*; D011837:Radiation-Protective Agents / Q000627:therapeutic use*; D011795:Surveys and Questionnaires; D016896:Treatment Outcome; D015431:Weight Loss; D024502:alpha-Tocopherol / Q000627:therapeutic use*
chemical_list: D009067:Mouthwashes; D011837:Radiation-Protective Agents; D024502:alpha-Tocopherol