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Oxidative stress is associated with atopic indices in relation to childhood rhinitis and asthma
Cheryn Yu Wei Choo1, Kuo-Wei Yeh2, Jing-Long Huang2
1College of Medicine, Chang Gung University, Taoyuan, Taiwan.
Insights
Oxidative stress markers correlate with allergic indices in children, influencing allergic responses and atopic disease risk. Specific markers link to allergic rhinitis and asthma development.
Area of Science:
- Immunology
- Environmental Health
- Pediatrics
Background:
- The link between oxidative stress and atopic diseases remains unclear.
- Existing research identifies risk factors for atopic diseases but lacks comprehensive analysis of oxidative stress markers and atopic indices.
Purpose of the Study:
- To investigate the association between oxidative stress markers and atopic indices in a pediatric birth cohort.
- To explore the relationship between oxidative stress, allergic sensitization, and the risk of developing atopic diseases.
Main Methods:
- A 7-year follow-up of 132 children from a birth cohort.
- Measurement of oxidative stress markers: plasma glutathione peroxidase (GPx), myeloperoxidase (MPO), total antioxidant capacity (TAC), and urine 8-hydroxy-2'-deoxyguanosine (8-OHdG).
- Assessment of allergic indices: allergen-specific IgE, fractional exhaled nitric oxide (FeNO), and pulmonary function tests.
Main Results:
- GPx and MPO levels showed inverse correlations with food (shrimp, crab) and house dust mite sensitization, respectively.
- 8-OHdG levels were negatively correlated with FeNO levels (p < 0.01).
- TAC levels positively correlated with FVC and FEV1 predicted values (p < 0.05).
- While not directly associated with atopic disease risk, specific marker-sensitization/index pairs were linked to increased risk of allergic rhinitis (GPx-crab, 8-OHdG-FeNO) and asthma (MPO-mite, TAC-pulmonary function).
Conclusions:
- Oxidative stress markers are significantly correlated with various allergic indices.
- These correlations suggest a role for oxidative stress in modulating allergic responses and contributing to the development of atopic diseases.
Background:
The association between oxidative stress and atopic diseases is uncertain. Several risk factors for atopic diseases have been identified, however, a comprehensive investigation of the relationship between oxidative stress markers and atopic indices related to atopic diseases is currently lacking.
Methods:
We investigated 132 children who completed a 7-years follow-up in a birth cohort. Oxidative stress markers including plasma glutathione peroxidase (GPx), myeloperoxidase (MPO), total anti-oxidant capacity (TAC), and urine 8-hydroxy-2'-deoxyguanosine (8-OHdG) levels were measured. Allergen-specific IgE levels, FeNO levels, and pulmonary function tests were also obtained.
Results:
The activity of GPx and levels of MPO were inversely correlated to food (shrimp and crab) and house dust mite sensitization respectively. The 8-OHdG levels were strongly negatively correlated with FeNO levels (p < 0.01). A significant positive correlation was found between TAC levels and pre-and post-bronchodilator FVC % and FEV1% predicted (p < 0.05). All oxidative stress markers were not associated with the risk of atopic diseases. However, GPx-related crab sensitization and 8-OHdG related FeNO levels were significantly associated with increased risk of allergic rhinitis, while MPO-related mite sensitization and TAC-related pulmonary function parameters were strongly associated with risk of asthma (p < 0.01).
Conclusion:
Oxidative stress is strongly correlated with allergic indices, potentially playing a role in the modulation of allergic responses contributing to atopic diseases.
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