Posted by: Indonesian Children | July 29, 2009

Urine Concentrations of Cysteinyl Leukotrienes in Children With Obstructive Sleep-Disordered Breathing

  • Athanasios G. Kaditis, MD*,
  • Emmanouel Alexopoulos, MD,
  • Konstantinos Chaidas, MD,
  • Georgia Ntamagka, MD,
  • Anastasia Karathanasi, MD,
  • Irene Tsilioni, BS,
  • Theodoros S. Kiropoulos, BS,
  • Elias Zintzaras, MSc, PhD and
  • Konstantinos Gourgoulianis, MD
  • +Author Affiliations 

    1. *From the Sleep Disorders Laboratory (Drs. Kaditis, Alexopoulos, Chaidas, Ntamagka, Karathanasi, and Gourgoulianis, Ms. Tsilioni, and Mr. Kiropoulos), and the Department of Biomathematics (Dr. Zintzaras), University of Thessaly School of Medicine and Larissa University Hospital, Larissa, Greece.
  • Correspondence to: Athanasios Kaditis, MD, 31 Theatrou St, Piraeus 18534, Greece; e-mail:
  • Abstract

    Background: Adenotonsillar tissue of children with obstructive sleep-disordered breathing (SDB) has increased content of cysteinyl leukotrienes (CysLTs) and expression of CysLTs receptors. Furthermore, CysLTs concentrations in the nasal exhaled breath condensate of children with sleep apnea are elevated.

    Objective: To investigate the relationship between urine levels of CysLTs and severity of SDB in children.

    Methods: Morning urine concentrations of CysLTs were measured in children with symptoms of SDB and in control subjects with recurrent tonsillitis and without snoring who underwent polysomnography and were expressed in pg/mL per mg/dL of urine creatinine.

    Results: Nineteen children with moderate-to-severe SDB (mean [± SD] age, 5.4 ± 1.6 years; obstructive apnea-hypopnea index [OAHI]: 14.4 ± 9.6 episodes/h), 29 subjects with mild SDB (5.1 ± 1.5 years; OAHI: 2.9 ± 0.8 episodes/h), 26 children with primary snoring (PS) [7 ± 2.6 years; OAHI: 1.1 ± 0.3 episodes/h], and 18 control subjects (6.4 ± 2.5 years; OAHI: 0.7 ± 0.3 episodes/h) were studied. Children with moderate-to severe SDB had higher log-transformed urine CysLTs levels than those with mild SDB, PS, or control subjects (2.39 ± 0.51 vs 2.06 ± 0.26 vs 2.11 ± 0.25 vs 1.86 ± 0.28; p < 0.05). Log-transformed CysLTs concentration, tonsillar size, and body mass index z score were significant predictors of log-transformed OAHI (p < 0.01).

    Conclusions: Urine excretion of CysLTs is related to SDB severity in children. This finding indicates that 5-lipoxygenase pathway products participate in the pathogenesis of obstructive sleep apnea in childhood or alternatively that SDB promotes CysLTs biosynthesis.



    Provided by

    children’s ALLERGY CLINIC 


    PHONE : (021) 70081995 – 5703646

    email :\ 





    Information on this web site is provided for informational purposes only and is not a substitute for professional medical advice. You should not use the information on this web site for diagnosing or treating a medical or health condition. You should carefully read all product packaging. If you have or suspect you have a medical problem, promptly contact your professional healthcare provider.

    Copyright © 2009, Children Allergy Clinic Information Education Network. All rights reserved.


    Leave a Reply

    Fill in your details below or click an icon to log in: Logo

    You are commenting using your account. Log Out /  Change )

    Google+ photo

    You are commenting using your Google+ account. Log Out /  Change )

    Twitter picture

    You are commenting using your Twitter account. Log Out /  Change )

    Facebook photo

    You are commenting using your Facebook account. Log Out /  Change )


    Connecting to %s


    %d bloggers like this: