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Published on: November 4, 2010
Effect of TRPV1 gene mutation on bronchial asthma in children before and after treatment
Chuan-Liang Chen1, Hong Li, Xiao-Hong Xing
1School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi Province, China; Henan Provincial People's Hospital, Zhengzhou, Henan Province, China.
Insights
TRPV1 gene expression and mutations are key factors in childhood asthma. Treatment reduced inflammatory markers like IL-4, IL-5, and eosinophils, improving outcomes for pediatric asthma patients.
Area of Science:
- Pediatric Pulmonology
- Molecular Genetics
- Immunology
Background:
- Bronchial asthma is a prevalent global respiratory condition affecting children, with unclear triggers and pathogenesis.
- Understanding the molecular mechanisms underlying pediatric asthma is crucial for effective diagnosis and treatment.
Purpose of the Study:
- To investigate the role of Transient Receptor Potential Vanilloid 1 (TRPV1) gene mutations and cytokine expression in children with acute bronchial asthma.
- To provide theoretical guidance for diagnosing and treating pediatric bronchial asthma.
Main Methods:
- Real-time quantitative polymerase chain reaction (PCR) to measure TRPV1 mRNA levels.
- Enzyme-linked immunosorbent assay (ELISA) to quantify serum total IgE, eosinophils (EOS), Interleukin-4 (IL-4), Interleukin-5 (IL-5), and Interferon-gamma (IFN-γ).
- Logistic regression analysis to identify key risk factors for pediatric asthma.
Main Results:
- Children with asthma exhibited higher TRPV1 mRNA levels, elevated IL-4, IL-5, and EOS, and lower IFN-γ compared to healthy controls.
- Post-treatment, TRPV1 mRNA levels increased, while IL-4, IL-5, EOS, and IgE levels decreased significantly; IFN-γ levels increased.
- TRPV1 expression, IL-4 levels, and rs4790522 site mutation were identified as major risk factors for pediatric bronchial asthma.
Conclusions:
- TRPV1 gene mutations are closely associated with the development of bronchial asthma in children.
- These findings offer a theoretical foundation for improving the treatment strategies and prognosis of pediatric asthma.
Abstract:
Bronchial asthma is a worldwide disease with high incidence. It not only harms children's physical and mental health, but it also brings a heavy burden to their families as well as the society. However, the trigger and pathogenesis of the disease remain unclear. This study aimed to analyze TRPV1 gene mutation and expression of cytokines in children with acute bronchial asthma before and after treatment, thus providing theoretical guidance for the diagnosis and treatment of bronchial asthma in children. Real-time quantitative polymerase chain reaction was adopted to detect TRPV1 mRNA expression level and enzyme-linked immuno sorbent assay was used to detect the serum total IgE level, eosinophil (EOS) number, IL-4, IL-5, and interferon (IFN) gamma levels in peripheral venous blood of children in the healthy control group and asthma group before and after treatment. Logistic regression analysis was applied to analyze the most essential factor inducing bronchial asthma in children. TRPV1 mRNA level of peripheral blood in the asthma group was higher than that in the control group before treatment (p < 0.01). The IL-4, IL-5, and EOS levels in serum were markedly higher than those in the control group (p < 0.01), whereas the IFN-gamma level was lower than that in the control group (p < 0.01). After conventional treatment, TRPV1 mRNA level increased significantly (p < 0.01). The levels of serum IL-4, IL-5, and EOS were significantly lower than those before treatment (p < 0.01), whereas, IFN-gamma level was higher than that before treatment (p < 0.01). Compared with that before treatment, the expression level of IgE showed a significant decrease after treatment (p < 0.01). The results of logistic regression analysis indicated that TRPV1 expression level, IL-4 level, and rs4790522 site mutation were the main risk factors inducing bronchial asthma in children. TRPV1 gene mutation was closely related to bronchial asthma in children, which provided a theoretical basis for the treatment and prognosis of children with bronchial asthma.
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