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Updated: May 19, 2026

A Human Ex Vivo Atherosclerotic Plaque Model to Study Lesion Biology
Published on: May 6, 2014
Novel immune signals and atherosclerosis
1Brigham and Women's Hospital, Department of Medicine, Cardiovascular Division, Center for Interdisciplinary Cardiovascular Sciences, 3 Blackfan Street, 17th Floor, Boston, MA 02115, USA. hiroiwata-circ@umin.ac.jp
Atherosclerosis, a chronic inflammatory process, involves immune signals and monocyte/macrophage biology. Understanding these mechanisms, including toll-like receptors (TLRs), is key to developing novel treatments for cardiovascular disease.
Area of Science:
- Cardiovascular Research
- Immunology
- Molecular Biology
Background:
- Atherosclerosis is the primary cause of coronary artery disease (CAD) and cerebrovascular disease, leading causes of mortality.
- Cardiovascular disease risk is reduced by controlling risk factors, notably lowering low-density lipoprotein (LDL) cholesterol with statins.
- Atherosclerosis is characterized as a chronic inflammatory condition initiated by risk factors, leading to endothelial dysfunction and inflammatory cell infiltration.
Purpose of the Study:
- To review the molecular mechanisms of immune signaling in atherosclerosis development and progression.
- To discuss the role of toll-like receptors (TLRs) in the pathogenesis of atherosclerosis.
- To explore monocyte/macrophage biology, including polarization and heterogeneity, in atherosclerosis progression.
Main Methods:
- Literature review summarizing current understanding of molecular mechanisms.
- Focus on immune signals, specifically toll-like receptors (TLRs).
- Analysis of monocyte/macrophage biology, including polarization and heterogeneity.
Main Results:
- Toll-like receptors (TLRs) are identified as potent inducers of inflammation and play a significant role in atherosclerosis pathogenesis.
- Monocyte and macrophage biology, encompassing polarization and heterogeneity, significantly contributes to atherosclerosis progression.
- Current knowledge highlights the interplay between molecular mechanisms and immune cell behavior in atherosclerosis.
Conclusions:
- Understanding the molecular mechanisms and immune cell orchestration is crucial for developing novel therapeutic strategies.
- Targeting immune pathways and monocyte/macrophage behavior offers potential for preventing and treating atherosclerosis.
- Further research into TLRs and macrophage dynamics can lead to innovative treatments for cardiovascular disorders.
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Atherosclerosis I: Introduction
Atherosclerosis II: Clinical Manifestations and Diagnostic Tests
Atherosclerosis III: Management
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Coronary Artery Disease I: Introduction
