Increased Leukotrienes in Exhaled Breath Condensate in Childhood Asthma

  • Zsuzsanna Csoma
    Department of Thoracic Medicine and Department of Pediatric Respiratory Care, Imperial College School of Medicine, National Heart and Lung Institute, London, United Kingdom
  • Sergei A. Kharitonov
    Department of Thoracic Medicine and Department of Pediatric Respiratory Care, Imperial College School of Medicine, National Heart and Lung Institute, London, United Kingdom
  • Beatrix Balint
    Department of Thoracic Medicine and Department of Pediatric Respiratory Care, Imperial College School of Medicine, National Heart and Lung Institute, London, United Kingdom
  • Andrew Bush
    Department of Thoracic Medicine and Department of Pediatric Respiratory Care, Imperial College School of Medicine, National Heart and Lung Institute, London, United Kingdom
  • Nicola M. Wilson
    Department of Thoracic Medicine and Department of Pediatric Respiratory Care, Imperial College School of Medicine, National Heart and Lung Institute, London, United Kingdom
  • Peter J. Barnes
    Department of Thoracic Medicine and Department of Pediatric Respiratory Care, Imperial College School of Medicine, National Heart and Lung Institute, London, United Kingdom

書誌事項

公開日
2002-11
権利情報
  • https://academic.oup.com/pages/standard-publication-reuse-rights
DOI
  • 10.1164/rccm.200203-233oc
公開者
Oxford University Press (OUP)

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説明

<jats:title>Abstract</jats:title> <jats:p>Cysteinyl leukotrienes (cys-LTs; LTC4, LTD4, and LTE4) are generated predominantly by mast cells and eosinophils and induce airway smooth muscle contraction, microvascular leakage, and mucous hypersecretion whereas leukotriene B4 (LTB4) is a potent chemoattractant of neutrophils. We measured cys-LTs and LTB4 in exhaled breath condensate from children aged 7–14 years including healthy nonatopic children (n = 11) and children with mild intermittent asthma (steroid naive, n = 11), mild persistent asthma (low-dose inhaled steroid treatment, n = 13), or moderate to severe persistent asthma (high-dose inhaled steroid treatment, n = 13). Exhaled LTB4 levels were increased in patients with mild and moderate to severe persistent asthma compared with patients with mild intermittent asthma (126.0 ± 8.8 and 131.9 ± 7.1 versus 52.7 ± 3.8 pg/ml, p &lt; 0.001 and p &lt; 0.0001) and normal subjects (126.0 ± 8.8 and 131.9 ± 7.1 versus 47.9 ± 4.1 pg/ml, p &lt; 0.0001). Elevated exhaled cys-LT levels were found in patients with mild and moderate to severe persistent asthma compared with normal subjects (27.9 ± 2.8 and 31.5 ± 4.5 versus 18.5 ± 0.5 pg/ml, p &lt; 0.01 and p &lt; 0.05). There was an inverse correlation between exhaled cys-LTs and LTB4 in patients with mild persistent asthma. We conclude that exhaled cys-LTs and LTB4 may be noninvasive markers of airway inflammation in pediatric asthma.</jats:p>

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