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Updated: Jul 27, 2025

Quantification of Monocyte Chemotactic Activity In Vivo and Characterization of Blood Monocyte Derived Macrophages
Published on: August 12, 2019
The Role of Macrophages in Atherosclerosis: Pathophysiologic Mechanisms and Treatment Considerations
Panagiotis Theofilis1, Evangelos Oikonomou2, Konstantinos Tsioufis1
1First Department of Cardiology, "Hippokration" General Hospital, University of Athens Medical School, 11527 Athens, Greece.
Insights
Macrophages are key to atherosclerosis. Targeting their M2 polarization and autophagy shows promise for treating this major cardiovascular disease, with macrophage receptors and membrane-coated carriers offering novel therapeutic avenues.
Area of Science:
- Cardiovascular Research
- Immunology
- Pathophysiology
Background:
- Atherosclerotic diseases remain a primary cause of global morbidity and mortality.
- Macrophages play a critical role in the atherosclerotic cascade, though their precise functions require further elucidation.
- Understanding macrophage subtypes and their distinct contributions to disease progression or regression is essential.
Purpose of the Study:
- To explore the multifaceted roles of macrophages in atherosclerosis.
- To highlight potential therapeutic strategies targeting macrophage polarization and autophagy.
- To review emerging approaches involving macrophage receptors and membrane-coated carriers for atherosclerosis treatment.
Main Methods:
- Review of current literature on macrophage biology in atherosclerosis.
- Analysis of studies investigating M2 polarization and autophagy in atheroprotection.
- Examination of experimental data on macrophage receptors as drug targets.
- Evaluation of research on macrophage-membrane-coated carriers.
Main Results:
- Distinct functions of tissue-resident and monocyte-derived macrophages in atherosclerosis identified.
- M2 polarization and macrophage autophagy demonstrated as atheroprotective mechanisms.
- Macrophage receptors show potential as viable drug targets.
- Macrophage-membrane-coated carriers exhibit promising therapeutic results.
Conclusions:
- Targeting macrophage M2 polarization and autophagy presents a promising therapeutic strategy for atherosclerotic diseases.
- Macrophage receptors and membrane-coated carriers represent innovative avenues for future drug development in cardiovascular medicine.
Abstract:
Atherosclerotic diseases are a leading cause of morbidity and mortality worldwide, despite the recent diagnostic and therapeutic advances. A thorough understanding of the pathophysiologic mechanisms is thus essential to improve the care of affected individuals. Macrophages are crucial mediators of the atherosclerotic cascade, but their role has not been fully elucidated. The two main subtypes, tissue-resident and monocyte-derived macrophages, have distinct functions that contribute to atherosclerosis development or regression. Since polarization of macrophages to an M2 phenotype and induction of macrophage autophagy have been demonstrated to be atheroprotective, targeting these pathways could represent an appealing approach. Interestingly, macrophage receptors could act as drug targets, as seen in recent experimental studies. Last but not least, macrophage-membrane-coated carriers have been investigated with encouraging results.
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