title: [Effects of various anesthesia maintenance on serum levels of selenium, copper, zinc, iron and antioxidant capacity].
abstract: OBJECTIVE
  In this study, we aimed to investigate the effects of sevoflurane, desflurane and propofol maintenances on serum levels of selenium, copper, zinc, iron, malondialdehyde, and glutathion peroxidase measurements, and antioxidant capacity.
  
  
  METHODS
  60 patients scheduled for unilateral lower extremity surgery which would be performed with tourniquet under general anesthesia were divided into three groups. Blood samples were collected to determine the baseline serum levels of selenium, copper, zinc, iron, malondialdehyde and glutathion peroxidase. Anesthesia was induced using 2-2.5mgkg(-1) propofol, 1mgkg(-1) lidocaine and 0.6mgkg(-1) rocuronium. In the maintenance of anesthesia, under carrier gas of 50:50% O2:N2O 4Lmin(-1), 1 MAC sevoflorane was administered to Group S and 1 MAC desflurane to Group D; and under carrier gas of 50:50% O2:air 4Lmin(-1) 6mgkgh(-1) propofol and 1μgkgh(-1) fentanyl infusion were administered to Group P. At postoperative blood specimens were collected again.
  
  
  RESULTS
  It was observed that only in Group S and P, levels of MDA decreased at postoperative 48th hour; levels of glutathion peroxidase increased in comparison to the baseline values. Selenium levels decreased in Group S and Group P, zinc levels decreased in Group P, and iron levels decreased in all three groups, and copper levels did not change in any groups in the postoperative period.
  
  
  CONCLUSIONS
  According to the markers of malondialdehyde and glutathion peroxidase, it was concluded that maintenance of general anesthesia using propofol and sevoflurane activated the antioxidant system against oxidative stress and using desflurane had no effects on oxidative stress and antioxidant system.
authors.affiliation: Departamento de Anestesiologia e Reanimação, Bülent Ecevit University, School of Medicine, Zonguldak, Turquia.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Akın
authors.affiliation: Departamento de Anestesiologia e Reanimação, Bülent Ecevit University, School of Medicine, Zonguldak, Turquia. Electronic address: periayogluzku@yahoo.com.
authors.forename: Hilal
authors.initials: H
authors.lastname: Ayoglu
authors.affiliation: Departamento de Anestesiologia e Reanimação, Bülent Ecevit University, School of Medicine, Zonguldak, Turquia.
authors.forename: Dilek
authors.initials: D
authors.lastname: Okyay
authors.affiliation: Departamento de Saúde Pública, Bülent Ecevit University, School of Medicine, Zonguldak, Turquia.
authors.forename: Ferruh
authors.initials: F
authors.lastname: Ayoglu
authors.affiliation: Departamento de Anestesiologia e Reanimação, Bülent Ecevit University, School of Medicine, Zonguldak, Turquia.
authors.forename: Abdullah
authors.initials: A
authors.lastname: Gür
authors.affiliation: Departamento de Bioquímica, Bülent Ecevit University, School of Medicine, Zonguldak, Turquia.
authors.forename: Murat
authors.initials: M
authors.lastname: Can
authors.affiliation: Departamento de Anestesiologia e Reanimação, Bülent Ecevit University, School of Medicine, Zonguldak, Turquia.
authors.forename: Serhan
authors.initials: S
authors.lastname: Yurtlu
authors.affiliation: Departamento de Anestesiologia e Reanimação, Bülent Ecevit University, School of Medicine, Zonguldak, Turquia.
authors.forename: Volkan
authors.initials: V
authors.lastname: Hancı
authors.affiliation: Departamento de Anestesiologia e Reanimação, Bülent Ecevit University, School of Medicine, Zonguldak, Turquia.
authors.forename: Gamze
authors.initials: G
authors.lastname: Küçükosman
authors.affiliation: Departamento de Anestesiologia e Reanimação, Bülent Ecevit University, School of Medicine, Zonguldak, Turquia.
authors.forename: Işıl
authors.initials: I
authors.lastname: Turan
keywords: Antioxidant capacity; Antioxidantes; Desflurane; Desflurano; Propofol; Selenium; Selênio; Sevoflurane; Sevoflurano; Zinc; Zinco