A unifying theory of atherogenesis

Area of Science:

• Cardiovascular Science
• Biomedical Engineering
• Rheology

Background:

• Atherosclerosis is a complex cardiovascular disease.
• Major risk factors include elevated serum low-density lipoprotein (LDL).
• The precise mechanisms linking LDL to atherosclerosis require further elucidation.

Purpose of the Study:

• To propose a novel theory on the pathogenesis of atherosclerosis.
• To elucidate the role of blood viscosity and erythrocyte aggregation in atherosclerosis.
• To explore the contrasting roles of LDL and HDL in disease development.

Main Methods:

• Theoretical review and synthesis of existing data.
• Analysis of the biophysical effects of lipoproteins on blood rheology.
• Conceptual modeling of atherogenesis based on viscosity changes.

Main Results:

• Elevated LDL increases blood viscosity by promoting erythrocyte aggregation.
• Increased viscosity leads to decreased blood flow, enhancing atherogenic element interaction with the endothelium.
• High-density lipoprotein (HDL) antagonizes erythrocyte aggregation, reducing viscosity and protecting against atherosclerosis.

Conclusions:

• Blood viscosity, modulated by LDL and HDL via erythrocyte aggregation, is a central factor in atherosclerosis.
• This theory offers a unified explanation for major atherosclerosis risk factors.
• Further research into rheological interventions for cardiovascular disease is warranted.