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Microparticles, vascular function and hypertension
1INSERM U970, Paris Cardiovascular Research Center-PARCC, Paris, France. Chantal.boulanger@inserm.fr
Purpose Of Review:
To summarize the potential role of microparticles in hypertension and in cardiovascular diseases. Microparticles are submicron vesicles shed from the membrane in response to cell activation or apoptosis. Microparticles of different cellular origins are found in the plasma of healthy individuals and their circulating levels augment in patients with cardiovascular diseases.
Recent Findings:
Recent studies demonstrate that circulating levels of microparticles originating from endothelial cells, which represent a small fraction of the overall pool of plasma microparticles, augment with increased endothelial dysfunction in patients with cardiovascular diseases. Therefore, endothelial microparticles constitute an emerging surrogate marker of endothelial dysfunction, with potential prognostic value for major adverse events in patients with cardiovascular diseases. In addition, microparticles of endothelial and other cellular origins are also potential biological effectors in inflammation, vascular injury, angiogenesis and thrombosis.
Summary:
In summary, circulating endothelial microparticles may serve not only as an index of arterial damage but also as a trigger of vascular repair.
Insights
Circulating endothelial microparticles are elevated in cardiovascular diseases and may indicate arterial damage. These microparticles also play a role in vascular repair, offering prognostic value.
Area of Science:
- Cardiovascular Biology
- Cellular Biology
Background:
- Microparticles are submicron vesicles released during cell activation or apoptosis.
- Elevated microparticle levels are observed in patients with cardiovascular diseases.
Purpose of the Study:
- To review the role of microparticles in hypertension and cardiovascular diseases.
- To highlight endothelial microparticles as potential biomarkers.
Main Methods:
- Literature review of recent studies on microparticles.
- Analysis of microparticle origins and their association with disease states.
Main Results:
- Endothelial microparticles increase with endothelial dysfunction in cardiovascular disease patients.
- Endothelial microparticles serve as a surrogate marker for endothelial dysfunction.
- Microparticles are implicated in inflammation, vascular injury, angiogenesis, and thrombosis.
Conclusions:
- Circulating endothelial microparticles can indicate arterial damage.
- Endothelial microparticles may also act as triggers for vascular repair.
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