title: Adenosine deaminase activity, trypsin inhibitory capacity and total antioxidant capacity in psoriasis.
abstract: BACKGROUND
  Psoriasis is a chronic inflammatory skin disease characterized by pathological skin lesions because of various exogenous and endogenous factors and associated with a number of biochemical and immunological disturbances.
  
  
  OBJECTIVE
  The aim of the present study was to determine the level of adenosine deaminase activity, serum trypsin inhibitory capacity and total antioxidant capacity of plasma in psoriatic patients.
  
  
  METHODS
  The study was performed in controls (n = 46) and in psoriatic patients (n = 40). The patients were scored with PASI (psoriasis area and severity index). The serum ADA activity was determined using Aguisti and Galanti method and serum trypsin inhibitory capacity (sTIC) were measured by enzymatic assay. Besides, serum total antioxidant capacity was measured using ferric reducing ability of plasma.
  
  
  RESULTS
  The serum ADA activity of the psoriatic patients was found to be significantly higher (P < 0.001) than that of the healthy control. We also found that the trypsin inhibitory capacity was significantly higher in patients than in control group (P < 0.001). Total antioxidant capacity of plasma was significantly lower in psoriatic patients than in healthy controls (P = 0.025). There were no significant correlations among ADA, TAC and TIC.
  
  
  CONCLUSIONS
  Serum ADA activity and sTIC were increased in psoriatic patients. In parallel, serum total anti-oxidant activity was decreased in these patients.
authors.affiliation: Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran. mhd.hashemi@gmail.com
authors.forename: M
authors.initials: M
authors.lastname: Hashemi
authors.forename: H
authors.initials: H
authors.lastname: Mehrabifar
authors.forename: M
authors.initials: M
authors.lastname: Daliri
authors.forename: S
authors.initials: S
authors.lastname: Ghavami
mesh_terms: D000243:Adenosine Deaminase / Q000097:blood*; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000975:Antioxidants / Q000378:metabolism*; D015415:Biomarkers / Q000097:blood; D002648:Child; D018450:Disease Progression; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007124:Immunoenzyme Techniques; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D011565:Psoriasis / Q000097:blood*; D012720:Severity of Illness Index; D014361:Trypsin Inhibitors / Q000097:blood*; D055815:Young Adult
chemical_list: D000975:Antioxidants; D015415:Biomarkers; D014361:Trypsin Inhibitors; D000243:Adenosine Deaminase