title: Increased oxidative stress in patients with familial Mediterranean fever during attack period.
abstract: OBJECTIVE
  We aimed to investigate the status of oxidant and antioxidants during attack period (AP) and attack free periods (AFP) in Familial Mediterranean fever (FMF) patients.
  
  
  METHODS
  Measured the levels of malondialdehyde (MDA), protein carbonyl (PC), glutathione (GSH) and antioxidant vitamins (A,C and E) as well as the activities of catalase (CAT) and glutathione peroxidase (GSH-Px) in serum and whole blood of FMF patients in FMF-AP and FMF-AFP.
  
  
  RESULTS
  Levels of MDA and PC were found significantly higher (p <0.05) both in serum and whole blood of FMF-AP group compared with other groups. The CAT and GSH-Px activities in FMF-AP group were found markedly lower (p <0.05) comparing to HC group. However, there were no statistically significant differences between the groups in terms of antioxidant vitamin levels.
  
  
  CONCLUSIONS
  Our study demonstrated increased oxidative stress in patients with FMF during AP. Investigations are needed to establish the effect of antioxidant supplementation on FMF attack frequency and severity. We also suggest that these increased MDA and PC levels and decreased antioxidants may be used as supportive markers to differentiate AP from AFP. These conclusions need to be validated in further multicenter studies with high number of FMF patients.
authors.affiliation: Yuzuncu Yil University, Medical Faculty, Physical Medicine-Rehabilitation and Rheumatology Department, Van, Turkey. leventediz@gmail.com
authors.forename: L
authors.initials: L
authors.lastname: Ediz
authors.forename: H
authors.initials: H
authors.lastname: Ozkol
authors.forename: I
authors.initials: I
authors.lastname: Tekeoglu
authors.forename: Y
authors.initials: Y
authors.lastname: Tuluce
authors.forename: E
authors.initials: E
authors.lastname: Gulcu
authors.forename: I
authors.initials: I
authors.lastname: Koyuncu
mesh_terms: D000208:Acute Disease; D000328:Adult; D010505:Familial Mediterranean Fever / Q000097:blood / Q000378:metabolism*; D005260:Female; D006801:Humans; D008297:Male; D018384:Oxidative Stress / Q000502:physiology*; D055815:Young Adult