title: Comparison of Oxidative Stress Markers and Serum Cortisol between Normal Labor and Selective Cesarean Section Born Neonates.
abstract: BACKGROUND
  An imbalance between antioxidant and oxidant-generating systems in newborns can cause oxidative damage. The effect of modes of delivery on oxidative stress in neonates is not fully investigated.
  
  
  OBJECTIVE
  This study was aimed to examine the effects of modes of delivery on oxidative stress markers and cortisol in newborns.
  
  
  METHODS
  In this study 60 term neonates {30 born via Normal Delivery (ND) and 30 born via elective Caesarean Delivery (CS)} at birth were enrolled. Glutathione Peroxidase (GPx), Catalase (CAT) and Superoxide Dismutase (SOD) activities were determined in umbilical cord blood in all neonates. Moreover serum cortisol, uric acid and Total Antioxidant Capacity (TAC) were measured.
  
  
  RESULTS
  GPx and SOD activities in cesarean born neonates were significantly higher than those of control subjects (p<0.05). TAC and CAT were not significantly different between the two groups. Serum cortisol was lower in caesarean born subjects as compared to normal born neonates. On the other hand uric acid concentration was higher in caesarean born neonates.
  
  
  CONCLUSIONS
  The obtained data indicated that babies born via caesarean section might be predisposed to pathological conditions due to altered antioxidant levels.
authors: MSc in Nursing, Department of Anesthesiology, School of Paramedical Sciences, Kermanshah University of Medical Sciences , Kermanshah, Iran .
authors: Rasoul Kaviany
authors: RK
authors: Nejad
authors: Professor, Department of Clinical Biochemistry, Research Center for Molecular Medicine, Hamadan University of Medical Sciences , Hamadn, Iran .
authors: Mohammad Taghi
authors: MT
authors: Goodarzi
authors: Ph.D Candidate, Department of Clinical Biochemistry, Medical School, Hamadan University of Medical Sciences , Hamadan, Iran .
authors: Gholamreza
authors: G
authors: Shfiee
authors: Assistant Professor, Department of Pediatrics, Hamadan University of Medical Sciences , Hamadan, Iran .
authors: Nasrolah
authors: N
authors: Pezeshki
authors: Assistant Professor in Histology, Department of Anatomical Sciences, Medical School, Hamadan University of Medical Sciences , Hamadan, Iran .
authors: Maryam
authors: M
authors: Sohrabi
keywords: Glutathione peroxidase; Newborn; Superoxide dismutase