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Circulating Microparticles and Coronary Plaque Components Assessed by Virtual Histology Intravascular Ultrasound of the Target Lesion in Patients with Stable Angina

 Pil-Ki Min  ;  Minhee Cho  ;  Sung-Yu Hong  ;  Jong-Youn Kim  ;  Eui-Young Choi  ;  Young-Won Yoon  ;  Byoung Kwon Lee  ;  Bum-Kee Hong  ;  Se-Joong Rim  ;  Hyuck Moon Kwon 
 PLOS ONE, Vol.11(1) : e0148128, 2016 
Journal Title
Issue Date
Aged ; Angina, Stable/diagnostic imaging ; Angina, Stable/pathology* ; Angioplasty, Balloon, Coronary ; Antibodies, Monoclonal/immunology ; Biomarkers/blood ; Cell-Derived Microparticles/immunology ; Cell-Derived Microparticles/pathology ; Coronary Angiography ; Coronary Artery Bypass ; Coronary Artery Disease/diagnostic imaging ; Coronary Artery Disease/therapy ; Coronary Vessels/diagnostic imaging ; Demography ; Female ; Humans ; Male ; Middle Aged ; Percutaneous Coronary Intervention ; Plaque, Atherosclerotic/diagnostic imaging ; Plaque, Atherosclerotic/pathology ; Stents ; Ultrasonography, Interventional*
High levels of microparticles (MPs) circulate in the blood of patients with atherosclerotic diseases where they can serve as potential biomarkers of vascular injury and cardiovascular outcome. We used virtual histology intravascular ultrasound (VH-IVUS) to evaluate the relationship between the levels of circulating MPs and the coronary plaque composition in patients with stable angina. We included 35 patients with stable angina (22 men, age 64 ± 9 years) and a de novo target lesion. Preintervention gray-scale and VH-IVUS analysis was performed across the target lesion. Volumetric analysis was performed over a 10-mm-long segment centered at the minimum luminal site. Blood samples were obtained from the femoral artery before coronary angioplasty. MPs were measured using a solid-phase capture assay from a commercial kit. We divided participants into either a low MPs group or high MPs group based on the median value of MPs. There was no significant difference in baseline characteristics between the groups. The plaque burden and remodeling index were similar between the groups. The presence of VH-IVUS-derived thin-cap fibroatheroma was not different between the groups. The percentage of the necrotic core (NC) was significantly higher in the high MPs group than in the low MPs group, both in planar (17.0 ± 8.8% vs. 24.1 ± 6.9%, p = 0.012) and volumetric analyses (17.0 ± 4.8% vs. 22.1 ± 4.3%, p = 0.002). Circulating MPs were positively correlated with the percentage of the NC area at the minimal luminal site (r = 0.491, p = 0.003) and the percentage of the NC volume (r = 0.496, p = 0.002). Elevated levels of circulating MPs were associated with the amount of NC in the target lesion in those with stable angina, suggesting a potential role of circulating MPs as a biomarker for detecting unstable plaque in patients with stable angina.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Kwon, Hyuck Moon(권혁문) ORCID logo https://orcid.org/0000-0001-9901-5015
Kim, Jong Youn(김종윤) ORCID logo https://orcid.org/0000-0001-7040-8771
Min, Pil Ki(민필기) ORCID logo https://orcid.org/0000-0001-7033-7651
Yoon, Young Won(윤영원) ORCID logo https://orcid.org/0000-0002-0907-0350
Lee, Byoung Kwon(이병권) ORCID logo https://orcid.org/0000-0001-9259-2776
Rim, Se Joong(임세중) ORCID logo https://orcid.org/0000-0002-7631-5581
Choi, Eui Young(최의영) ORCID logo https://orcid.org/0000-0003-3732-0190
Hong, Bum Kee(홍범기) ORCID logo https://orcid.org/0000-0002-6456-0184
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