title: Elevated levels of urinary 8-hydroxy-2'-deoxyguanosine and 8-isoprostane in esophageal squamous cell carcinoma.
abstract: OBJECTIVE
  To measure oxidative DNA and lipid damages, urinary levels of 8-hydroxy-2'-deoxyguanosine (8-OHdG), and 8-isoprostane in esophageal squamous cell carcinoma (SCC) patients and compare the values with that in controls.
  
  
  METHODS
  The urinary concentrations of 8-OHdG and 8-isoprostane were measured in 32 SCC patients (13 female/19 male; mean age: 61.4 ± 10.5 years) and 45 controls (22 female/23 male; mean age: 58.1 ± 8.3 years).
  
  
  RESULTS
  Squamous cell carcinoma patients showed significantly higher levels of urinary 8-OHdG (15.6 ± 5.1 ng/mg creatinine) than controls (5.8 ± 2.1 ng/mg creatinine) (P<.001). Increased urinary concentrations of 8-isoprostane were also detected in SCC patients (35.4 ± 6.5 ng/mmol creatinine) as compared to the controls (16.9 ± 4.0 ng/mmol creatinine) (P<.001).
  
  
  CONCLUSIONS
  Our results show the presence of oxidative DNA and lipid damage in the SCC patients. This may have a connection to carcinogenesis in the esophagus.
authors.affiliation: Department of Biochemistry, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran.
authors.forename: Mohammad-Hassan
authors.initials: MH
authors.lastname: Khadem-Ansari
authors.forename: Zahra
authors.initials: Z
authors.lastname: Shahsavari
authors.forename: Yousef
authors.initials: Y
authors.lastname: Rasmi
authors.forename: Rahim
authors.initials: R
authors.lastname: Mahmoodlo