title: [Comparison of oxidative stress markers in exhaled breath condensate and in serum of patients with tuberculosis and sarcoidosis].
abstract: Tuberculosis and sarcoidosis represent the granulomatous diseases. The aim of the study was to compare the markers of oxidative stress: in exhaled breath condensate (EBC) and in serum of patients with tuberculosis and sarcoidosis.
  
  
  METHODS
  19 patients with active lung tuberculosis and 15 patients with sarcoidosis were enrolled into the study. As a control served 15 healthy subjects. Hydrogen peroxide (H2O2) was measured in EBC and the ends products of lipid peroxidation (TBARs) were assessed in serum.
  
  
  RESULTS
  The concentrations of H202 and TBARs (1022.96+/-186.02 nM and 4.22+/-0. 80 microM, respectively) were significantly higher in patients with tuberculosis as compared with the controls (398.15+/-37.10 nM and 0.48+/-0.17 microM, respectively). The patients with sarcoidosis revealed only the significantly elevated levels of hydrogen peroxide (963.30+/-105.77 nM) in breath condensate.
  
  
  CONCLUSIONS
  It was found that local and systemic oxidative stress were present in patients with tuberculosis, while in those with sarcoidosis existed only the local reaction.
authors.affiliation: Uniwersytet Medyczny w Lodzi. skwiat@wp.pl
authors.forename: Sylwia
authors.initials: S
authors.lastname: Kwiatkowska
authors.forename: Maria
authors.initials: M
authors.lastname: Luczyńska
authors.forename: Iwona
authors.initials: I
authors.lastname: Grzelewska-Rzymowska
authors.forename: Dariusz
authors.initials: D
authors.lastname: Nowak
authors.forename: Marek
authors.initials: M
authors.lastname: Zieba
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000378:metabolism; D001944:Breath Tests; D016022:Case-Control Studies; D045853:Exhalation; D005260:Female; D006801:Humans; D006861:Hydrogen Peroxide / Q000378:metabolism*; D015227:Lipid Peroxidation; D008297:Male; D008875:Middle Aged; D018384:Oxidative Stress; D012507:Sarcoidosis / Q000097:blood / Q000378:metabolism*; D014397:Tuberculosis, Pulmonary / Q000097:blood / Q000378:metabolism*
chemical_list: D015415:Biomarkers; D006861:Hydrogen Peroxide