title: Evaluation of serum paraoxonase and arylesterase activities in ankylosing spondylitis patients.
abstract: OBJECTIVE
  The aim of this study was to investigate the activities of serum paraoxonase and arylesterase in patients with ankylosing spondylitis with respect to those of healthy controls, to assess whether these enzyme levels are related to disease activity and functional capacity.
  
  
  METHODS
  The study included 32 patients with ankylosing spondylitis whose diagnoses were made according to the modified New York criteria as well as 25 healthy controls matched for age and sex. The Bath Ankylosing Spondylitis Disease Activity Index and the Bath Ankylosing Spondylitis Functional Index were applied to the ankylosing spondylitis patients. As laboratory parameters, the erythrocyte sedimentation rate and serum C-reactive protein level were measured in patients and control subjects. Paraoxonase and arylesterase enzyme activities were measured using appropriate methods.
  
  
  RESULTS
  No statistically significant differences (p>0.05) were found between the ankylosing spondylitis patients and controls in terms of serum paraoxonase or arylesterase levels. Furthermore, there was no correlation between clinical and laboratory parameters in patients with ankylosing spondylitis.
  
  
  CONCLUSIONS
  Serum paraoxonase and arylesterase levels in ankylosing spondylitis patients may not differ from those of healthy controls, and there is no significant correlation between antioxidant parameters and the Bath Ankylosing Spondylitis Disease Activity Index or Bath Ankylosing Spondylitis Functional Index scores in ankylosing spondylitis patients. Further research is needed to provide deeper understanding of this disease.
authors.affiliation: Department of Physical Medicine and Rehabilitation, Sifa Hospital - Erzurum, Turkey. fazilehe@hotmail.com
authors.forename: Fazile Hatipoglu
authors.initials: FH
authors.lastname: Erdem
authors.forename: Saliha
authors.initials: S
authors.lastname: Karatay
authors.forename: Kadir
authors.initials: K
authors.lastname: Yildirim
authors.forename: Ahmet
authors.initials: A
authors.lastname: Kiziltunc
mesh_terms: D000328:Adult; D000368:Aged; D043303:Aryldialkylphosphatase / Q000097:blood*; D015415:Biomarkers / Q000097:blood; D001799:Blood Sedimentation; D002097:C-Reactive Protein / Q000032:analysis; D002265:Carboxylic Ester Hydrolases / Q000097:blood*; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012720:Severity of Illness Index; D013167:Spondylitis, Ankylosing / Q000201:enzymology*; D055815:Young Adult
chemical_list: D015415:Biomarkers; D002097:C-Reactive Protein; D002265:Carboxylic Ester Hydrolases; C019734:arylesterase; D043303:Aryldialkylphosphatase