title: [The effect of antioxidant enzyme on germ cell apoptosis in cryptorchidism].
abstract: OBJECTIVE
  To evaluate the effect of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSHPx) on germ cell apoptosis in cryptorchidism.
  
  
  METHODS
  Forty-eight immature male Sprague-Dawley rats were divided into the cryptorchid and the control group randomly. Testes were harvested at 1, 3 and 7 days after the operation. Germ cell apoptosis was determined by TUNEL technique, at the same time the activities of antioxidant enzymes and the level of malonic diethyl aldehyde (MDA) were detected with spectrophotometer.
  
  
  RESULTS
  At the 7th day, as compared with the control, testicular weight, SOD activities, CAT activities and the ratio of SOD/(CAT + GSHPx) were reduced significantly(P < 0.01), GSHPx activities had no apparent change(P > 0.05), while apoptosis index and the MDA level increased predominantly in cryptorchidism(P < 0.01).
  
  
  CONCLUSIONS
  Germ cell apoptosis in cryptorchidism related closely to the decrease of antioxidant enzyme activity.
authors.affiliation: Department of Urology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei 430071, China.
authors.forename: Qian-Jin
authors.initials: QJ
authors.lastname: Fei
authors.forename: Xin-Min
authors.initials: XM
authors.lastname: Zheng
authors.forename: Shi-Wen
authors.initials: SW
authors.lastname: Li
authors.forename: Hang
authors.initials: H
authors.lastname: Zheng
mesh_terms: D000818:Animals; D017209:Apoptosis; D002374:Catalase / Q000502:physiology*; D003456:Cryptorchidism / Q000473:pathology*; D005979:Glutathione Peroxidase / Q000502:physiology*; D015227:Lipid Peroxidation; D008297:Male; D009929:Organ Size; D051381:Rats; D017207:Rats, Sprague-Dawley; D013094:Spermatozoa / Q000473:pathology*; D013482:Superoxide Dismutase / Q000502:physiology*
chemical_list: D002374:Catalase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase