Genetic Variations in Endothelin Receptors and Airway Obstruction
Author Information
Author(s): Camille Taillé, Armelle Guénégou, Abdelhamid Almolki, Marie Piperaud, Bénédicte Leynaert, Sandrine Vuillaumier, Françoise Neukirch, Jorge Boczkowski, Michel Aubier, Joëlle Benessiano, Bruno Crestani
Primary Institution: Hôpital Bichat-Claude Bernard, Assistance Publique-Hôpitaux de Paris
Hypothesis
Molecular variation in the genes encoding for endothelin receptors could be a major determinant of the degree of bronchial obstruction.
Conclusion
The EDNRB-30G>A polymorphism could be a determinant of airway obstruction in humans with predisposing factors such as tobacco smoke exposure or asthma.
Supporting Evidence
- The EDNRB-30G>A polymorphism is associated with a lower FEV1 in asthmatic patients.
- No relationship was found between pulmonary function and EDNRA or preproET-1 polymorphisms.
- In a large population from the ECRHS II, a similar association was found between the GG genotype and low FEV1.
- The risk of airway obstruction was higher in subjects with the GG genotype compared to those with AA or AG genotypes.
Takeaway
Some people have a gene change that makes it harder for them to breathe, especially if they smoke or have asthma.
Methodology
The study involved genotyping adult asthmatic patients and a larger population from the ECRHS II study to assess the association between genetic polymorphisms and FEV1.
Potential Biases
The study may have selection bias due to recruiting patients from a university hospital, which could influence the severity of asthma observed.
Limitations
The study was conducted in a hospital-based population, which may not represent the general population, and potential selection bias may exist.
Participant Demographics
The study included 162 adult asthmatic patients, all Caucasian, born in France.
Statistical Information
P-Value
0.0039
Confidence Interval
95%CI 1.03 – 18.04
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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