An integrated approach for the mechanisms responsible for atherosclerotic plaque regression

Area of Science:

• Cardiovascular Biology
• Pathology
• Translational Medicine

Background:

• Atherosclerosis, once viewed as age-related, involves dynamic plaques capable of regression.
• High-density lipoprotein (HDL) is studied for its role in plaque regression, but regression is multifactorial.
• Plaque regression involves complex cellular and molecular processes beyond lipid removal.

Purpose of the Study:

• To provide a comprehensive overview of atherosclerotic plaque regression.
• To integrate current knowledge on the diverse mechanisms driving plaque regression.
• To highlight the importance of an integrated view for pharmaceutical targeting.

Main Methods:

• Literature review and synthesis of existing research on plaque regression mechanisms.
• Categorization of regression processes into lipid removal, endothelial repair, and smooth muscle cell modulation.
• Integration of findings to present a holistic model of plaque regression.

Main Results:

• Plaque regression involves active removal of lipids and necrotic debris via macrophage migration to lymph nodes.
• Endothelial function restoration occurs through proliferation of neighboring cells and circulating endothelial progenitor cells.
• Vascular smooth muscle cell proliferation cessation is a secondary consequence of improved milieu and repair processes.

Conclusions:

• Atherosclerotic plaque regression is a multifaceted process involving coordinated cellular responses.
• An integrated understanding of plaque regression pathways is crucial for effective pharmaceutical intervention.
• Targeting multiple regression mechanisms offers a promising strategy for treating atherosclerosis.