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• W4280622976 abstract "18F-sodium fluoride (18F-NaF) positron emission tomography (PET)/computed tomography (CT) is a promising new approach for assessing microcalcification in vascular plaque.This prospective study aimed to evaluate the associations between in vivo coronary 18F-NaF PET/CT activity and ex vivo histological characteristics, to determine whether coronary 18F-NaF activity is a novel biomarker of plaque pathological vulnerability, and to explore the underlying physiological environment of 18F-NaF adsorption to vascular microcalcification.Patients with coronary artery disease (CAD) underwent coronary computed tomography angiography (CTA) and 18F-NaF PET/CT. Histological vulnerability and immunohistochemical characteristics were evaluated in coronary endarterectomy (CE) specimens from patients who underwent coronary artery bypass grafting with adjunctive CE. Correlations between in-vivo coronary 18F-NaF activity with coronary CTA adverse plaque features and with ex vivo CE specimen morphological features, CD68 expression, inflammatory cytokines expression (tumor necrosis factor-α, interleukin-1β), osteogenic differentiation cytokines expression (osteopontin, runt-related transcription factor 2, osteocalcin) were evaluated. High- and low- to medium-risk plaques were defined by standard pathological classification.A total of 55 specimens were obtained from 42 CAD patients. Coronary 18F-NaF activity of high-risk specimens was significantly higher than low- to medium-risk specimens (median [25th-75th percentile]: 1.88 [1.41-2.54] vs 1.12 [0.91-1.54]; P < 0.001). Coronary 18F-NaF activity showed high discriminatory accuracy in identifying high-risk plaque (AUC: 0.80). Coronary CTA adverse plaque features (positive remodeling, low-attenuation plaque, remodeling index), histologically vulnerable features (large necrotic core, thin-fibro cap, microcalcification), CD68 expression, tumor necrosis factor-α expression, and interleukin-1β expression correlated with coronary 18F-NaF activity (all P < 0.05). No significant association between coronary 18F-NaF activity and osteogenic differentiation cytokines was found (all P > 0.05).Coronary 18F-NaF activity was associated with histological vulnerability, CD68 expression, inflammatory cytokines expression, but not with osteogenic differentiation cytokines expression. 18F-NaF PET/CT imaging may provide a powerful tool for detecting high-risk coronary plaque and could improve the risk stratification of CAD patients." @default.
• W4280622976 created "2022-05-22" @default.
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• W4280622976 date "2023-04-01" @default.
• W4280622976 modified "2023-10-14" @default.
• W4280622976 title "In Vivo Coronary 18F-Sodium Fluoride Activity" @default.
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• W4280622976 doi "https://doi.org/10.1016/j.jcmg.2022.03.018" @default.
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