Related Experiment Video
Updated: Jul 14, 2026
09:58
Assessing Collagen and Elastin Pressure-dependent Microarchitectures in Live, Human Resistance Arteries by Label-free Fluorescence Microscopy
Published on: April 9, 2018
Genetic influences on the arterial wall
Bronwyn Kingwell1, Pierre Boutouyrie
1Department of Pharmacology and INSERM U652, Hôpital Européen Georges, Pompidou, Université Paris-Descartes, Faculté de Médecine, Paris, France.
Clinical and Experimental Pharmacology & Physiology
|June 22, 2007
Summary
Genetic factors significantly influence arterial stiffness, a key predictor of cardiovascular events. This is independent of blood pressure and involves changes in arterial wall composition and organization.
Area of Science:
- Cardiovascular Research
- Genetics
- Vascular Biology
Background:
- Arterial stiffness predicts cardiovascular events and appears to have a genetic basis.
- This genetic influence is largely independent of blood pressure and other risk factors.
Purpose of the Study:
- To investigate the genetic and structural determinants of arterial stiffness.
- To understand how arterial wall composition and organization influence mechanical properties.
Main Methods:
- Analysis of animal models of essential hypertension (SHR, SHRSP).
- Characterization of arterial phenotypes in monogenic connective tissue diseases and their animal models.
- Examination of extracellular matrix components and their role in vascular function.
Main Results:
- Animal models show structural arterial wall changes (elastin-smooth muscle connections, lamina fenestrations) not always linked to increased stiffness.
- Studies on connective tissue diseases reveal how abnormal genetic components affect arterial stiffness.
- Elastin and collagen play roles beyond passive elasticity, influencing smooth muscle cell function.
Conclusions:
- Arterial stiffness is significantly influenced by the amount, density, and spatial organization of stiff wall materials.
- Genetic factors play a crucial role in arterial stiffness, mediated by extracellular matrix properties and vascular wall structure.
Related Concept Videos
01:30Coronary Artery Disease I: Introduction
Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
01:30Atherosclerosis I: Introduction
Atherosclerosis is a progressive disorder characterized by the buildup of plaques on the arterial inner wall, causing them to narrow and harden over time. These plaques comprise lipids, calcium, blood components, carbohydrates, and fibrous tissue. The process primarily affects the intima of large and medium-sized arteries, reducing blood flow in any artery.Etiology and risk factorsThe cause of atherosclerosis is multifactorial, involving a complex interplay among endothelial injury, lipid...
01:29Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu
Genetic variations significantly influence drug response through pharmacokinetics, receptor interactions, and biologic milieu modifications. Pharmacokinetic alterations impact drug metabolism and clearance, affecting efficacy and toxicity. Variants in drug-metabolizing enzymes, such as CYP2C9 and CYP2C19, alter drug activation and elimination. For example, CYP2C9 loss-of-function variants require lower warfarin doses to prevent excessive bleeding, while CYP2C19 variants reduce clopidogrel...
01:26Coronary Artery Disease II: Pathophysiology
Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
01:30Aneurysm I: Introduction
An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
01:30Peripheral Artery Disease I: Introduction
Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...