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Effects of physical exercise on lung injury and oxidant stress in children with asthma
Ozlem Gunay1, Ece Onur, Ozge Yilmaz
1Celal Bayar University Medical Faculty, Dept of Biochemistry, Manisa, Turkey. ece.onur@bayar.edu.tr
Insights
Exercise training significantly reduced endothelin-1 (ET-1) levels in children with asthma, suggesting a key role in managing lung inflammation and oxidative stress.
Area of Science:
- Pediatric Pulmonology
- Exercise Physiology
- Biochemistry
Background:
- Asthma in children is associated with oxidative stress and lung inflammation.
- Exercise training's impact on these markers requires further investigation.
Purpose of the Study:
- To examine the effects of exercise training on oxidative stress and lung inflammation markers in pediatric asthma.
- To compare outcomes between children receiving pharmacotherapy alone versus those with added exercise.
Main Methods:
- Thirty children (8-13 years) with asthma and 13 healthy controls were studied.
- Asthma patients were divided into pharmacotherapy-only and pharmacotherapy plus exercise groups.
- Biomarkers including Leukotriene E4, malondialdehyde (MDA), matrix metallopeptidase-9 (MMP-9), and endothelin-1 (ET-1) were measured.
Main Results:
- Leukotriene E4, MDA, and MMP-9 levels decreased significantly in both asthma treatment groups.
- Endothelin-1 (ET-1) levels showed a significant decrease exclusively in the exercise group.
- ET-1 levels were significantly lower in the exercise group compared to the pharmacotherapy-only group.
Conclusions:
- Exercise training demonstrates positive effects in pediatric asthma management.
- The reduction in endothelin-1 (ET-1) may be a primary mechanism mediating these benefits.
- Exercise may offer an adjunctive therapy for improving asthma control.
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.
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