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Screening Assays to Characterize Novel Endothelial Regulators Involved in the Inflammatory Response
Published on: September 15, 2017
Endothelial dysfunction in chronic inflammatory diseases
Curtis M Steyers1, Francis J Miller2
1Department of Internal Medicine, University of Iowa, Iowa City, IA 52242, USA. curtis-m-steyers@uiowa.edu.
Insights
Chronic inflammatory diseases accelerate atherosclerosis and cardiovascular disease (CVD) risk by causing endothelial dysfunction. Targeting tumor necrosis factor-alpha (TNF-α) may reduce this risk.
Area of Science:
- Cardiovascular Science
- Immunology
- Rheumatology
Background:
- Chronic inflammatory diseases share pathogenic links with atherosclerosis, a major cause of cardiovascular disease (CVD).
- Endothelial dysfunction is a critical early event in atherosclerosis and is prevalent in patients with systemic inflammatory conditions.
- Understanding the interplay between systemic inflammation and vascular health is crucial for CVD prevention.
Purpose of the Study:
- To explore the mechanisms linking chronic inflammatory diseases to endothelial dysfunction and accelerated atherosclerosis.
- To highlight the endothelium as a key site for understanding the relationship between systemic inflammation and CVD.
- To investigate the potential of anti-inflammatory therapies, specifically those targeting tumor necrosis factor-alpha (TNF-α), in mitigating cardiovascular risk.
Main Methods:
- Review of current literature on atherosclerosis, chronic inflammatory diseases, and endothelial function.
- Analysis of factors contributing to endothelial activation in inflammatory conditions, including cytokines, oxidative stress, and lipoproteins.
- Discussion of the role of endothelial dysfunction as a marker for cardiovascular events.
Main Results:
- Systemic inflammatory diseases are associated with early endothelial dysfunction, contributing to atherosclerosis.
- Multiple inflammatory mediators (e.g., TNF-α, reactive oxygen species, oxidized LDL) activate endothelial cells, impairing vascular function.
- Endothelial dysfunction manifests as reduced vascular relaxation, increased leukocyte adhesion, and a pro-thrombotic state.
Conclusions:
- Endothelial dysfunction is a central mechanism linking chronic inflammatory diseases to accelerated atherosclerosis and cardiovascular disease.
- Targeting inflammatory pathways, such as TNF-α, holds promise for reducing endothelial dysfunction and CVD risk in these patients.
- Elucidating these mechanisms can advance our understanding of atherosclerosis in the general population.
Abstract:
Chronic inflammatory diseases are associated with accelerated atherosclerosis and increased risk of cardiovascular diseases (CVD). As the pathogenesis of atherosclerosis is increasingly recognized as an inflammatory process, similarities between atherosclerosis and systemic inflammatory diseases such as rheumatoid arthritis, inflammatory bowel diseases, lupus, psoriasis, spondyloarthritis and others have become a topic of interest. Endothelial dysfunction represents a key step in the initiation and maintenance of atherosclerosis and may serve as a marker for future risk of cardiovascular events. Patients with chronic inflammatory diseases manifest endothelial dysfunction, often early in the course of the disease. Therefore, mechanisms linking systemic inflammatory diseases and atherosclerosis may be best understood at the level of the endothelium. Multiple factors, including circulating inflammatory cytokines, TNF-α (tumor necrosis factor-α), reactive oxygen species, oxidized LDL (low density lipoprotein), autoantibodies and traditional risk factors directly and indirectly activate endothelial cells, leading to impaired vascular relaxation, increased leukocyte adhesion, increased endothelial permeability and generation of a pro-thrombotic state. Pharmacologic agents directed against TNF-α-mediated inflammation may decrease the risk of endothelial dysfunction and cardiovascular disease in these patients. Understanding the precise mechanisms driving endothelial dysfunction in patients with systemic inflammatory diseases may help elucidate the pathogenesis of atherosclerosis in the general population.
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