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Cardiovascular disease: genes and public health
1Department of Physiology, University of Melbourne, Australia. s.harrap@physiology.unimelb.edu.au
Insights
Genetic research shows promise for cardiovascular disease, but widespread DNA screening and manipulation face challenges. Future genetic insights may lead to effective public health strategies for broad benefit.
Area of Science:
- Genetics and Molecular Biology
- Cardiovascular Disease Research
Background:
- Molecular biology advances offer potential for cardiovascular disease (CVD) diagnosis and treatment.
- While rare Mendelian CVDs have identified genetic causes, common forms remain elusive.
- Inconsistent results plague genetic studies for common cardiovascular conditions.
Purpose of the Study:
- To review the clinical and epidemiological context of cardiovascular disease genetics.
- To explore gene-environment interactions in cardiovascular disease.
- To discuss the future applications of genetic understanding in healthcare and public health.
Main Methods:
- Literature review focusing on broader issues in cardiovascular disease genetics.
- Discussion of gene-environment interactions and marker utility.
- Exploration of the role of physiology and future directions in genetics.
Main Results:
- Widespread DNA screening and genetic manipulation are unlikely to be accepted by the public.
- The complexity of genetic factors makes identifying specific mutations for common CVDs challenging and costly.
Conclusions:
- Genetics may uncover novel pathophysiological mechanisms for cardiovascular disease.
- Public health measures, informed by genetic discoveries, can benefit the largest populations.
Introduction:
The advances in molecular biology hold great promise for complex conditions such as cardiovascular disease. Early accurate diagnosis and new preventive and treatment strategies are among the potential benefits of genetic understanding. Many genes and mutations have been discovered that contribute to rare Mendelian forms of cardiovascular disease. However, there has been little tangible success in defining specific mutations that explain the more common forms of cardiovascular disease. Of the numerous genes tested, inconsistent results are a recurring theme.
Methods:
This review addresses broader issues that touch on the clinical and epidemiological context in which the genetics of cardiovascular disease might develop. How do genes and environment interact in cardiovascular disease? What characteristics of a marker might make it useful? How will genetic understanding be used? What is the place of physiology in molecular biology? Is the future of genetics in patient management or public health?
Results:
It is concluded that individuals and communities are unlikely to accept widespread DNA screening, and less likely to tolerate genetic manipulation. Genetic complexity will make the identification of specific mutations an expensive and potentially thankless task.
Conclusions:
Genetics may reveal new pathophysiological mechanisms against which simple, safe and effective public health measures can bring benefit to the greatest number.