ApoE controls the interface linking lipids and inflammation in atherosclerosis
Christian Weber1, Oliver Soehnlein
1Institute for Cardiovascular Prevention, Ludwig-Maximilians-University Munich, Munich, Germany. christian.weber@med.uni-muenchen.de
Insights
High cholesterol (hypercholesterolemia) and high white blood cell counts (leukocytosis) contribute to atherosclerosis. A new study reveals a mechanistic link between these factors, offering potential new treatments for arterial disease.
Area of Science:
- Cardiovascular Science
- Immunology
- Pathology
Background:
- Atherosclerosis is a chronic inflammatory arterial disease.
- Hypercholesterolemia and leukocytosis are independent risk factors.
- Arterial leukocyte infiltration contributes to disease progression.
Purpose of the Study:
- To identify a mechanistic link between hypercholesterolemia and leukocytosis in atherosclerosis.
- To investigate the role of leukocyte homeostasis in atherosclerotic lesion development.
Main Methods:
- The study utilized a mouse model to investigate the relationship between hypercholesterolemia and leukocytosis.
- Mechanistic pathways connecting these conditions and lesion development were explored.
Main Results:
- Murphy and colleagues identified a mechanistic link between hypercholesterolemia and leukocytosis.
- This link promotes arterial leukocyte infiltration and atherosclerotic lesion formation in mice.
Conclusions:
- Hypercholesterolemia and leukocytosis are mechanistically linked in the development of atherosclerosis.
- Findings suggest novel therapeutic strategies targeting leukocyte homeostasis to manage atherosclerosis.
Abstract:
Atherosclerosis is a chronic inflammatory disease of the arterial walls that often leads to myocardial infarction and/or stroke. Hypercholesterolemia and an imbalance of peripheral leukocyte counts, leading to arterial leukocyte infiltration, are considered independent risk factors for atherosclerosis. However, in this issue of the JCI, Murphy and colleagues identify a mechanistic link between hypercholesterolemia, leukocytosis, and the subsequent development of atherosclerotic lesions in mice. These findings could pave the way for the development of novel treatment strategies to control leukocyte homeostasis and atherosclerosis.
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