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Generation of Lymphocytic Microparticles and Detection of their Proapoptotic Effect on Airway Epithelial Cells
Published on: February 20, 2015
Impact of endothelial microparticles on coagulation, inflammation, and angiogenesis in age-related vascular diseases
Margaret Markiewicz1, Erin Richard, Natalia Marks
1Division of Rheumatology and Immunology, Medical University of South Carolina, 114 Doughty Street, STB, Charleston, SC 29425, USA.
Abstract:
Endothelial microparticles (EMPs) are complex vesicular structures that originate from plasma membranes of activated or apoptotic endothelial cells. EMPs play a significant role in vascular function by altering the processes of inflammation, coagulation, and angiogenesis, and they are key players in the pathogenesis of several vascular diseases. Circulating EMPs are increased in many age-related vascular diseases such as coronary artery disease, peripheral vascular disease, cerebral ischemia, and congestive heart failure. Their elevation in plasma has been considered as both a biomarker and bioactive effector of vascular damage and a target for vascular diseases. This review focuses on the pleiotropic roles of EMPs and the mechanisms that trigger their formation, particularly the involvement of decreased estrogen levels, thrombin, and PAI-1 as major factors that induce EMPs in age-related vascular diseases.
Insights
Endothelial microparticles (EMPs) are key to vascular health and disease. This review explores how factors like lower estrogen levels trigger EMPs, impacting age-related vascular conditions.
Area of Science:
- Vascular Biology and Medicine
- Cellular Biology
- Biomarkers and Disease Pathogenesis
Background:
- Endothelial microparticles (EMPs) are vesicles from activated or apoptotic endothelial cells.
- EMPs influence inflammation, coagulation, and angiogenesis, crucial for vascular function.
- Elevated EMPs are linked to age-related vascular diseases like coronary artery disease and cerebral ischemia.
Purpose of the Study:
- To review the multifaceted roles of EMPs in vascular health and disease.
- To elucidate the mechanisms driving EMP formation, especially in aging populations.
- To highlight EMPs as both biomarkers and effectors of vascular damage.
Main Methods:
- Literature review of studies on endothelial microparticles.
- Analysis of factors influencing EMP generation and release.
- Synthesis of current understanding of EMPs in age-related vascular pathology.
Main Results:
- EMPs are significant mediators in vascular pathophysiology.
- Circulating EMP levels increase in various age-related vascular conditions.
- Decreased estrogen, thrombin, and PAI-1 are identified as key inducers of EMPs.
Conclusions:
- EMPs are critical players in the pathogenesis of vascular diseases.
- Understanding EMP formation mechanisms is vital for therapeutic strategies.
- Targeting EMPs offers potential for managing age-related vascular damage.
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