title: Antioxidant prophylaxis for cellular injury in ovarian surface epithelium resulting from CO₂ pneumoperitoneum in a laparoscopic rat model.
abstract: OBJECTIVE
  Selective cytoprotective functions of vitamin E, N-acetyl-L: -cysteine, and amifostine have been used as a preventer of ischemia injury by expelling the free oxygen radicals leading to stabilization of the cellular membranes. The purpose of this experimental study was to investigate the oxidative stress related to cellular injury in ovarian surface epithelium and the effect of prophylaxis with an anti-oxidant using laparoscopic rat model.
  
  
  METHODS
  Laparoscopic rat model.
  
  
  METHODS
  Randomly allocated 40 Wistar Albino female rats have been used for the pneumoperitoneum model which was constituted to fix the intraabdominal pressure on 5 mmHg for 60 min. The antioxidants, vitamin E and NAC were given to rats 3 days before the operation and were applied for 30 days; amifostine was applied 30 min before the operation until after for 7 days. After abdominal desufflation, over biopsies were made on the 13th min, 24th h, and 7th and 30th days. By using of transmission electron microscopy, the damage on cells and organels were assessed and graded.
  
  
  RESULTS
  In ovarian surface epithelium, the apical surface specializations were affected in all groups except Vit E group:The microvilli were irregular and coarse and had disappeared in some places. Some cells were separated from the epithelium. In addition, mitochondria degeneration was observed in all group except Vit E.
  
  
  CONCLUSIONS
  In the early period of laparoscopy, reversible cellular damage occurs and this damage can be prevented by vitamin E.
authors: Department of Obstetrics and Gynecology, Baskent University School of Medicine, Kubilay Sok no: 36 Maltepe, 06570 Ankara, Turkey.
authors: Sule
authors: S
authors: Kıray
authors: Gogsen
authors: G
authors: Onalan
authors: Gulten
authors: G
authors: Karabay
authors: Hulusi
authors: H
authors: Zeyneloglu
authors: Esra
authors: E
authors: Kuscu