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Comparison of Fimasartan and Amlodipine Therapy on Carotid Atherosclerotic Plaque Inflammation.

Clinical Cardiology 2018 December 10
BACKGROUND: The renin-angiotensin system plays an important role in promoting atherosclerotic plaque inflammation, which may be inhibited by angiotension-II receptor blockers.

HYPOTHESIS: We investigated the effects of fimasartan and amlodipine therapy on carotid atherosclerotic plaque inflammation using 18 F-fluorodeoxyglucose (18 FDG) positron emission tomography (PET) imaging.

METHODS: Fifty patients with acute coronary syndrome and at least one lesion with 18 FDG uptake in the carotid artery (target to background ratio (TBR) ≥ 1.6) were randomly assigned to receive either fimasartan (60mg once a day) or amlodipine (5mg once a day). 18 FDG PET examinations were performed in all patients at baseline and 6 months. The primary endpoint was the percent change in the index vessel TBR for the most diseased segment (MDS TBR).

RESULTS: The two groups had similar baseline characteristics. At the 6 month follow-up, index vessel and aorta MDS TBR significantly decreased in both groups. However, the percent change in index vessel MDS TBR was similar between the two groups (-9.33±14.2% vs. -7.73±19.1%, respectively, p = 0.9). No significant difference was found for the percent change in the whole vessel TBR for the index vessel between the two groups, with similar findings for changes in MDS TBR or whole vessel TBR for the aorta. Total cholesterol, LDL cholesterol levels, and blood pressure improved to a similar degree in both groups.

CONCLUSIONS: Fimasartan and amlodipine reduce carotid atherosclerotic plaque inflammation similarly in patients with acute coronary syndrome, offering the same level of effectiveness.

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