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Oxygenation-sensitive Cardiac MRI with Vasoactive Breathing Maneuvers for the Non-invasive Assessment of Coronary Microvascular Dysfunction

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Microparticles and vascular dysfunction in obstructive sleep apnoea.

Wojciech Trzepizur¹, Maria Carmen Martinez², Pascaline Priou³

¹INSERM U1063, Angers Dept of Respiratory Diseases, Angers University Hospital, Angers, France wotrzepizur@chu-angers.fr.

The European Respiratory Journal

|March 15, 2014

Summary

Obstructive sleep apnoea (OSA) is linked to cardiovascular disease. This review explores how microparticles (MPs) released in OSA may drive atherosclerosis and related vascular issues.

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Area of Science:

Cardiovascular research
Sleep medicine
Vascular biology

Background:

Obstructive sleep apnoea (OSA) is a known risk factor for cardiovascular diseases like myocardial infarction and stroke.
OSA can exacerbate atherosclerosis by promoting risk factors such as hypertension, diabetes, and dyslipidaemia.
Microparticles (MPs), small vesicles from cell membranes, are increasingly implicated in the atherogenic process.

Purpose of the Study:

To review the characteristics of microparticles (MPs).
To examine the expression of MPs in patients with obstructive sleep apnoea (OSA).
To elucidate the potential role of MPs in the atherogenic process associated with OSA.

Main Methods:

Review of existing case-control studies on MP levels in OSA patients.
Analysis of experimental evidence demonstrating the pro-atherogenic effects of MPs from OSA patients.
Synthesis of current literature on MP biology and their association with OSA.

Main Results:

Studies show elevated levels of platelet-, endothelium-, and leukocyte-derived MPs in individuals with OSA.
Experimental data indicate that MPs from OSA patients can induce endothelial dysfunction, inflammation, and vascular hyperreactivity.
MPs are released by various vascular and blood cells and contain cellular components.

Conclusions:

Microparticles (MPs) are significantly increased in obstructive sleep apnoea (OSA).
These MPs play a potential role in the development and progression of atherosclerosis in OSA patients.
Further research into MPs may offer new therapeutic targets for cardiovascular complications of OSA.