Effects of homogenization of induced sputum by dithiothreitol on polymorphonuclear cells

  • Van Overveld F
  • Demkow U
  • Górecka D
 et al. 
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Induced sputum represents a useful and non-invasive tool to isolate different cells from the airways. Complete homogenization of sputum is important for dispersion of cells and is usually achieved by use of dithiothreitol (DTT). However, it is not known if DTT will influence the viability and functionality of cells obtained by induced sputum. In the present study, induced sputum was processed by DTT or by PBS treatment. The obtained neutrophils were compared with neutrophils obtained from peripheral blood and from bronchoalveolar lavage fluid (BAL). These isolated neutrophils were treated in a similar way as the sputum neutrophils with DTT or PBS. All isolated cells were used for chemiluminescence tests and for the measurement of elastase and myeloperoxidase release after stimulation with fMLP. The results showed that the maximum chemiluminescence response was always significantly lower after DTT treatment: blood, 16.68 +/-1.89 vs. 2.62 +/-0.43 mV, P

Author-supplied keywords

  • Dithiothreitol
  • Induced sputum
  • Neutrophil functions
  • Oxygen radicals
  • Viability

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  • PUI: 43142775
  • PMID: 16204788
  • SGR: 31344447575
  • SCOPUS: 2-s2.0-31344447575
  • ISSN: 08675910


  • F. J. Van Overveld

  • U. Demkow

  • D. Górecka

  • E. Skopinska-Rozewska

  • W. A. De Backer

  • J. Zielinski

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