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Genetic susceptibility to peripheral arterial disease: a dark corner in vascular biology
Joshua W Knowles1, Themistocles L Assimes, Jun Li
1Falk Cardiovascular Research Building, Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, 94305-5406, USA. knowelj@stanford.edu
Insights
Peripheral arterial disease (PAD) affects millions, increasing cardiovascular risks. Research is exploring genetic factors contributing to PAD susceptibility, aiming to uncover specific genetic variants.
Area of Science:
- Vascular Biology
- Genetics
- Cardiovascular Disease Epidemiology
Background:
- Peripheral arterial disease (PAD) affects 12 million Americans, stemming from atherosclerosis and reduced limb blood flow.
- PAD is a significant cause of cardiovascular morbidity and mortality, linked to genetic and environmental factors.
- Understanding the genetic basis of PAD is crucial due to its high prevalence and societal burden.
Purpose of the Study:
- To review current knowledge on genetic variants associated with PAD.
- To explore advanced methodologies for identifying PAD's genetic underpinnings.
- To emphasize the need for collaborative research in PAD genetics.
Main Methods:
- Literature review of existing studies on PAD genetics.
- Discussion of current genetic research approaches, including their strengths and weaknesses.
- Highlighting the necessity of large-scale, collaborative genetic investigations.
Main Results:
- Limited knowledge currently exists regarding specific genetic variants for PAD.
- Multiple genes likely contribute modest effects to PAD susceptibility.
- Some genetic variants may specifically influence PAD risk, distinct from coronary artery disease.
Conclusions:
- Elucidating the genetic basis of PAD requires more powerful and collaborative research efforts.
- Investigating specific genetic variants could reveal novel insights into PAD pathogenesis.
- Enhanced understanding of PAD genetics is essential for improving patient outcomes and reducing disease burden.
Abstract:
Peripheral arterial disease (PAD) is characterized by reduced blood flow to the limbs, usually as a consequence of atherosclerosis, and affects approximately 12 million Americans. It is a common cause of cardiovascular morbidity and an independent predictor of cardiovascular mortality. Similar to other atherosclerotic diseases, such as coronary artery disease, PAD is the result of the complex interplay between injurious environmental stimuli and genetic predisposing factors of the host. Genetic susceptibility to PAD is likely contributed by sequence variants in multiple genes, each with modest effects. Although many of these variants probably alter susceptibility both to PAD and to coronary artery disease, it is likely that there exists a set of variants specifically to alter susceptibility to PAD. Despite the prevalence of PAD and its high societal burden, relatively little is known about such genetic variants. This review summarizes our limited present knowledge and gives an overview of recent, more powerful approaches to elucidating the genetic basis of PAD. We discuss the advantages and limitations of genetic studies and highlight the need for collaborative networks of PAD investigators for shedding light on this dark corner of vascular biology.
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