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  • Title: Effect of moderate-intensity statin therapy on plaque inflammation in patients with acute coronary syndrome: A prospective interventional study evaluated by 18F-FDG PET/CT of the carotid artery.
    Author: Kim CJ, Han EJ, Chu EH, Hwang BH, Kim JJ, Seung KB, Kim SH, O JH, Chang K.
    Journal: Cardiol J; 2020; 27(6):762-771. PubMed ID: 30009378.
    Abstract:
    BACKGROUND: Asian patients with acute coronary syndrome (ACS) are frequently prescribed moderate- -intensity statin in real practice, even during the early stage of ACS. Under assessment herein was the effect of moderate-intensity statin therapy on the resolution of plaque inflammation during the first month after ACS, a period with highest recurrent ischemic events, using dual time point 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT). METHODS: This prospective study included statin-naïve patients with ACS and non-calcified carotid plaques (≥ 3 mm on ultrasound images). Baseline FDG PET/CT images of the carotid arteries of the patients were obtained. Then, all patients received atorvastatin (20 mg/day); follow-up FDG PET/CT images of the carotid arteries were then obtained after 1 month of therapy. The primary endpoint measurement was the change in the target-to-background ratio (TBR) of the carotid artery between the initial and follow-up FDG PET/CT scans. RESULTS: Thirteen ACS patients completed the initial and follow-up FDG PET/CT scans. Moderate-intensity statin therapy failed to reduce plaque inflammation at 1 month after ACS (TBR 1.60 ± 0.20 at baseline vs. 1.50 ± 0.40 after therapy; p = 0.422) but significantly reduced serum low-density lipoprotein cholesterol (LDL-C) levels (mean LDL-C 101.2 ± 21.1 mg/dL at baseline vs. 70.7 ± 12.4 mg/dL after therapy; p < 0.001). Changes in the TBR and serum LDL-C levels were not correlated (r = -0.27, p = 0.243). CONCLUSIONS: Dual time point FDG PET/CT imaging demonstrates that moderate-intensity statin therapy was insufficient in suppressed plaque inflammation within the first month after ACS in Asian patients, even though achieving target LDL levels.
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