Genetics and pathophysiology of arterial stiffness

Area of Science:

• Cardiovascular Genetics
• Vascular Biology
• Genomics

Background:

• Arterial stiffness is an independent cardiovascular risk factor.
• Carotid-femoral pulse wave velocity (PWV) is the clinical gold standard for assessing arterial stiffness.
• Genetic factors play a significant role in the development of arterial stiffening.

Purpose of the Study:

• To review recent genetic findings related to arterial stiffness.
• To highlight advances in identifying gene variants affecting PWV.
• To explore novel genetic pathways implicated in arterial stiffening.

Main Methods:

• Review of genome-wide linkage analyses.
• Analysis of candidate gene polymorphism association studies.
• Examination of genome-wide association (GWA) studies using high-density SNP arrays.

Main Results:

• Identification of genes involved in the renin-angiotensin-aldosterone system, elastic fibers, metalloproteinases, and NO pathway.
• Polymorphism studies implicated beta-adrenergic receptors, endothelin receptors, and inflammatory molecules.
• GWA studies revealed novel gene groups potentially regulating gene expression, cell differentiation, apoptosis, and immune response in the vascular wall.

Conclusions:

• Genetic research has identified multiple gene groups contributing to arterial stiffness.
• Novel genetic pathways, beyond established mechanisms, are implicated in arterial stiffening.
• Understanding these genetic factors is crucial for developing targeted interventions for cardiovascular risk.