Bronchodilator S-nitrosothiol deficiency in asthmatic respiratory failure.

Journal Article (Journal Article)

BACKGROUND: Nitric oxide (NO) gas concentrations are high in the expired air of individuals with asthma, but not consistently so in the expired air of people with pneumonia. S-nitrosothiols are naturally occurring bronchodilators, the concentrations of which are raised in the airways of patients with pneumonia. Airway S-nitrosothiols have not been studied in asthma. METHODS: Tracheal S-nitrosothiol concentrations from eight asthmatic children in respiratory failure were compared with those of 21 children undergoing elective surgery. RESULTS: Mean S-nitrosothiol concentrations in asthmatic children were lower than in normal children (65 [SD 45] nmol/L vs 502 [SD 429] nmol/L) and did not vary with inspired oxygen concentration or airway thiol concentration. INTERPRETATION: Severe asthma is associated with low concentrations of airway S-nitrosothiols. This is the first reported deficiency of an endogenous bronchodilator in the human asthmatic airway lining fluid. We suggest that S-nitrosothiol metabolism may be a target for the development of new asthma therapies.

Full Text

Duke Authors

Cited Authors

  • Gaston, B; Sears, S; Woods, J; Hunt, J; Ponaman, M; McMahon, T; Stamler, JS

Published Date

  • May 2, 1998

Published In

Volume / Issue

  • 351 / 9112

Start / End Page

  • 1317 - 1319

PubMed ID

  • 9643794

International Standard Serial Number (ISSN)

  • 0140-6736

Digital Object Identifier (DOI)

  • 10.1016/S0140-6736(97)07485-0


  • eng

Conference Location

  • England