title: Effects of physical exercise on lung injury and oxidant stress in children with asthma.
abstract: BACKGROUND
  The aim of this study was to investigate the influence of exercise training on oxidative stress and markers of lung inflammation in children with asthma.
  
  
  METHODS
  Thirty children aged 8-13 years diagnosed with asthma were enrolled in the study as well as 13 healthy children. One group received only pharmacological treatment and the other group was also enrolled in an exercise programme. Venous blood and 24-hour urine samples were obtained from the children enrolled in the study at the beginning and end of the study. Leukotriene E4 and creatinine levels were measured in the urine and matrix metallopeptidase (MMP-9), endothelin-1(ET-1), malnodialdehyde (MDA), IgE and specific IgE levels were measured in blood samples.
  
  
  RESULTS
  Leukotriene E4, MDA and MMP9 levels decreased significantly with treatment in both groups (p < 0.001). However, ET-1 levels decreased significant only in the exercise group (26.5 ± 3.6 vs 21.3 ± 2.4 pg/ml respectively, p = 0.001). Moreover, ET-1 levels were found to be significantly lower in the exercise group compared to the only pharmacotherapy group (24.2 ± 3.1 vs 21.3 ± 2.4 pg/ml, p=0.007).
  
  
  CONCLUSIONS
  Positive influences of exercise training in children with asthma may be mediated by decrease in ET-1 levels.
authors.affiliation: Celal Bayar University Medical Faculty, Dept of Biochemistry, Manisa, Turkey. ece.onur@bayar.edu.tr
authors.forename: Ozlem
authors.initials: O
authors.lastname: Gunay
authors.forename: Ece
authors.initials: E
authors.lastname: Onur
authors.forename: Ozge
authors.initials: O
authors.lastname: Yilmaz
authors.forename: Pinar E
authors.initials: PE
authors.lastname: Dundar
authors.forename: Canan
authors.initials: C
authors.lastname: Tikiz
authors.forename: Ahmet
authors.initials: A
authors.lastname: Var
authors.forename: Hasan
authors.initials: H
authors.lastname: Yuksel
mesh_terms: D000293:Adolescent; D001249:Asthma / Q000378:metabolism / Q000628:therapy*; D015415:Biomarkers; D002648:Child; D019332:Endothelin-1 / Q000097:blood; D005081:Exercise Therapy; D005260:Female; D006801:Humans; D017999:Leukotriene E4 / Q000097:blood; D055370:Lung Injury / Q000517:prevention & control*; D008297:Male; D008315:Malondialdehyde / Q000097:blood; D020780:Matrix Metalloproteinase 9 / Q000097:blood; D018384:Oxidative Stress
chemical_list: D015415:Biomarkers; D019332:Endothelin-1; D008315:Malondialdehyde; D017999:Leukotriene E4; D020780:Matrix Metalloproteinase 9