JOURNAL ARTICLE
MULTICENTER STUDY
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Coronary risk factors associated with OCT macrophage images and their response after CoCr everolimus-eluting stent implantation in patients with stable coronary artery disease.

Atherosclerosis 2017 October
BACKGROUND AND AIMS: The aim of this study was to evaluate the accumulation of optical coherence tomography (OCT)-macrophages and OCT findings after CoCr everolimus-eluting stent placement, in addition to coronary risk factors.

METHODS: A total of 89 lesions in 89 patients were registered in the 1- and 3-month cohort of the multi-centre study. Lesion characteristics and post-procedure OCT images were evaluated immediately and 1 and 3 months after stenting. Patients were divided into low and high macrophage grade groups based on the median macrophage grade.

RESULTS: Low-density lipoprotein cholesterol (LDL-C) levels, the prevalence of diabetes mellitus, HbA1c and blood glucose levels in the high macrophage grade group were significantly higher than in the low macrophage grade group (p = 0.025, p = 0.040, p = 0.032, and p = 0.010). Moreover, total lipid arc and length and number of thin-cap fibroatheromas (TCFAs) in the high macrophage grade group were significantly higher than in the low macrophage group (p = 0.008, p = 0.002, and p = 0.012). After CoCr everolimus-eluting stenting, there was a trend towards a greater number, height, and area of irregular protrusions in the high macrophage grade group compared to the low macrophage grade group (p = 0.091, p = 0.059, and p = 0.085). Multivariate logistic regression analysis showed that diabetes mellitus was a significant predictor of high macrophage grades (odds ratio: 2.8, 95% CI: 1.1-7.3, p = 0.030).

CONCLUSIONS: The accumulation of OCT-macrophages was associated with diabetes mellitus in patients with coronary artery disease. Moreover, macrophage accumulation and diabetes mellitus may be associated with irregular protrusions just after stenting.

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