title: The effect of hypothermia on adnexal torsion/detorsion injury in a rat ovary model.
abstract: OBJECTIVE
  Much attention has been given to hypothermia as it is effective in inhibiting inflammatory responses and also ischemia/reperfusion injury. Therefore, the aim of this study was to evaluate the effect of hypothermia on torsion/detorsion injury in rats.
  
  
  METHODS
  Twenty-eight rats were randomly divided into four groups of sham-operated (SG), adnexal torsion/detorsion group (TG), adnexal torsion/detorsion+hypothermia group (THG) and hypothermia group (HG). In the SG group, right ovaries were excised after 3-h fixation to abdominal wall. In the TG, right adnexal underwent 720° torsion in a counterclockwise direction for 3h and then excised after 3-h detorsion period. In the THG, after 3-h torsion period, ovaries were immediately subjected to hypothermia (4°C) for 30-min and they were excised after 3-h detorsioned period. In the HG, the right ovaries were subjected to hypothermia for 30-min and excised after 3-h fixation period. One half of each ovary was immediately stored for antioxidant enzyme activity and tissue lipid peroxidation. The remainder was fixed for histopathological examination.
  
  
  RESULTS
  Adnexal torsion and detorsion significantly increased the tissue level of Malondialdehyde, Superoxide dismutase and Reduced glutathione. On the other hand, hypothermia significantly reduced these oxidative stress parameters. The histopathological changes were less in the THG group; these changes were not statistically different from the other groups.
  
  
  CONCLUSIONS
  The results of this study suggested that hypothermia inhibited the production of oxidative stress in the ovaries subjected to torsion/detorsion injury.
authors.affiliation: Department of Pediatric Surgery, Izmir University, Faculty of Medicine, Izmir, Turkey. Electronic address: eturk19@yahoo.de.
authors.forename: Erdal
authors.initials: E
authors.lastname: Türk
authors.affiliation: Department of Pediatric Surgery, Izmir University, Faculty of Medicine, Izmir, Turkey.
authors.forename: İrfan
authors.initials: İ
authors.lastname: Karaca
authors.affiliation: Department of Embriology and Histology, Izmir University, Faculty of Medicine, Izmir, Turkey.
authors.forename: Emine
authors.initials: E
authors.lastname: Ozcinar
authors.affiliation: Department of Biochemistry, Izmir University, Faculty of Medicine, Izmir, Turkey.
authors.forename: Aydan
authors.initials: A
authors.lastname: Celebiler
authors.affiliation: Department of Biochemistry, Pamukkale University, Faculty of Medicine, Denizli, Turkey.
authors.forename: Hülya
authors.initials: H
authors.lastname: Aybek
authors.affiliation: Department of Pathology, Izmir University, Faculty of Medicine, Izmir, Turkey.
authors.forename: Ragıp
authors.initials: R
authors.lastname: Ortac
authors.affiliation: Department of Pediatric Surgery, Gulhane Military Medical Faculty, Ankara, Turkey.
authors.forename: Ahmet
authors.initials: A
authors.lastname: Güven
mesh_terms: D000818:Animals; D015415:Biomarkers / Q000378:metabolism; D005260:Female; D007036:Hypothermia, Induced; D010049:Ovarian Diseases / Q000150:complications / Q000628:therapy*; D010053:Ovary / Q000378:metabolism / Q000473:pathology; D018384:Oxidative Stress; D011897:Random Allocation; D051381:Rats; D017208:Rats, Wistar; D015427:Reperfusion Injury / Q000209:etiology / Q000378:metabolism / Q000473:pathology / Q000517:prevention & control*; D014102:Torsion Abnormality / Q000150:complications / Q000628:therapy*; D016896:Treatment Outcome
chemical_list: D015415:Biomarkers
keywords: Adnexal torsion/detorsion injury; Hypothermia; Ischemia; Ovarian tissue