title: [Protective effects of nanometer selenium on acute gastric mucosal lesion in rats].
abstract: OBJECTIVE
  To study the protective effects of nanometer selenium on acute gastric mucosal lesion in rats.
  
  
  METHODS
  50 healthy Wister rats were divided into five groups randomly: normal group, model group, and three experimental groups (4.17, 8.33 and 16.67 mg/kg). The lesion of gastric mucosal was established by giving absolute alcohol after giving nanometer selenium of different dosage to rats except normal group, examined histopathology of gastric mucosa, then measured the lesion index (UI)of rats in normal group, model group and three experimental groups. The activity of glutathione peroxidase (GSH-Px) and malondialdehyde (MDA) content in blood were determined.
  
  
  RESULTS
  Gastric mucosal lesion index of all the three experimental groups was obviously reduced compared with the control groups (P < 0.01) and existed dose dependent. The nanometer selenium elevated GSH-Px activity (P < 0.01) but reduced MDA content (P < 0.05, P < 0.01). In addition, the extent of mucosal lesion of experimental groups was significantly less than that of experimental control.
  
  
  CONCLUSIONS
  Nanometer selenium can significantly prevent absolute ethanol-induced acute gastric mucosal lesion. The mechanism may be related to the antioxidation of the powder.
authors.affiliation: Department of Nutrition and Food Hygiene, Baotou Medical College, Baotou 014010, China. yuxiaohong224@163.com
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Yu
authors.forename: Xiuju
authors.initials: X
authors.lastname: Xu
authors.forename: Jun
authors.initials: J
authors.lastname: Su
mesh_terms: D000818:Animals; D000431:Ethanol / Q000009:adverse effects; D005260:Female; D005753:Gastric Mucosa / Q000187:drug effects* / Q000473:pathology; D008297:Male; D053768:Metal Nanoparticles / Q000627:therapeutic use*; D011897:Random Allocation; D051381:Rats; D017208:Rats, Wistar; D012643:Selenium / Q000627:therapeutic use*; D013276:Stomach Ulcer / Q000139:chemically induced / Q000188:drug therapy*
chemical_list: D000431:Ethanol; D012643:Selenium