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Elevated ACE activity is not associated with asthma, COPD, and COPD co-morbidity
Julie Lee1, Børge G Nordestgaard, Morten Dahl
1Department of Clinical Biochemistry 54M1, Herlev University Hospital, Herlev Ringvej 75, Herlev, Denmark.
Respiratory Medicine
|May 9, 2009
Summary
The angiotensin-converting enzyme (ACE) D allele does not increase the risk for asthma or COPD. Lifelong elevated ACE activity due to the ACE D allele is not a significant risk factor for these respiratory conditions.
Area of Science:
- Genetics and Respiratory Medicine
- Cardiovascular Disease Epidemiology
Background:
- The angiotensin-converting enzyme (ACE) gene is investigated for its role in asthma and COPD risk.
- Genetic variations in the ACE gene, specifically the D allele, are hypothesized to influence disease susceptibility.
- Understanding the genetic basis of respiratory and cardiovascular diseases is crucial for risk stratification and prevention.
Purpose of the Study:
- To determine if individuals with the ACE D allele (homozygous or heterozygous) have an increased risk of asthma, COPD, or COPD co-morbidities.
- To investigate the association between ACE gene polymorphisms and serum ACE activity.
- To assess the impact of genetically elevated ACE activity on the risk of ischemic heart disease, hypertension, and low physical activity in COPD patients.
Main Methods:
- A large cohort study of 9034 Danish adults was conducted.
- Genotyping for ACE gene polymorphisms (II, ID, DD) was performed.
- Serum ACE activity was measured and correlated with ACE genotypes.
- Statistical analyses, including odds ratios and confidence intervals, were used to assess disease risk and co-morbidities, adjusted for multiple factors.
Main Results:
- Serum ACE activity increased with the number of D alleles (II < ID < DD).
- No significant association was found between ACE D allele carriage and the risk of asthma or COPD in the general population.
- In COPD patients, ACE D allele carriage did not significantly increase the risk for ischemic heart disease, hypertension, or low physical activity.
Conclusions:
- Lifelong genetically elevated ACE activity, as determined by the ACE D allele, is not a major risk factor for developing asthma or COPD.
- The ACE gene polymorphism does not appear to be a significant predictor for common co-morbidities in COPD patients.
- These findings suggest that ACE gene variations have a limited role in the pathogenesis of asthma and COPD.
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