Localization of atherosclerosis: role of hemodynamics

Area of Science:

• Cardiovascular Biology
• Biomedical Engineering
• Pathology

Background:

• Atherosclerosis is a systemic chronic disease.
• Lesion distribution in atherosclerosis is nonrandom, with specific arterial sites being more susceptible.
• Existing research points to systemic risk factors, but the precise localization mechanisms require further elucidation.

Purpose of the Study:

• To investigate the role of hemodynamic forces in the nonrandom localization of atherosclerotic lesions.
• To characterize the specific mechanical forces, such as shear stress and strain, acting on the vascular endothelium.
• To understand how these forces modify endothelial cells and contribute to atherogenesis.

Main Methods:

• Analysis of hemodynamic forces, including shear stress and cyclic circumferential strain.
• Investigation of the interaction between these forces and the active vascular endothelium.
• Examination of the modification of endothelial cell structure and function in response to mechanical stimuli.

Main Results:

• Hemodynamic forces, specifically shear stress and cyclic circumferential strain, are identified as key factors in the nonrandom distribution of atherosclerotic lesions.
• These mechanical forces actively modify endothelial cell structure and function.
• The characterized forces provide insight into the vascular propensity for developing atherosclerosis.

Conclusions:

• The localization of atherosclerotic lesions is significantly influenced by biomechanical forces, not solely systemic risk factors.
• Understanding the mechanobiology of the endothelium is crucial for comprehending atherogenesis.
• Targeting the interaction between hemodynamic forces and the endothelium may offer novel therapeutic strategies for atherosclerosis.