Changes in carotid plaque tissue composition in subjects who continued and discontinued statin therapy

医学 纤维帽 瑞舒伐他汀 他汀类 中止 内科学
作者
Ruixue Du,Xue-Qiao Zhao,Jianming Cai,Bao Cui,Hong-Mei Wu,Ping Ye
出处
期刊:Journal of Clinical Lipidology [Elsevier BV]
卷期号:10 (3): 587-593 被引量:12
标识
DOI:10.1016/j.jacl.2016.01.004
摘要

Changes in plaque tissue components such as lipid-rich necrotic core (LRNC) and fibrous tissue with long-term statin treatment or discontinuation have not been studied.LRNC and fibrous tissue by magnetic resonance imaging were evaluated in subjects who continued and discontinued statin therapy for 2 years after a prospective study.The Rosuvastatin Evaluation of Atherosclerotic Chinese Patients study in 32 lipid treatment naïve subjects showed a significant reduction in LRNC during 24 months of rosuvastatin therapy. After Rosuvastatin Evaluation of Atherosclerotic Chinese Patients was completed, 15 subjects continued taking statins and 17 discontinued despite receiving an instruction to continue statin therapy. LRNC and fibrous tissue were compared between 24 and 48 months within each group and between the 2 groups.At 48 months, LRNC volume and composition decreased significantly compared with that at 24 months in the statin-continued group (101 ± 76 vs 76 ± 65 mm(3); P = .001 and 17.3 ± 11.9% vs 12.6 ± 7.6%; P = .04), whereas fibrous tissue increased significantly in both volume (337 ± 160 vs 357 ± 169 mm(3); P < .001) and composition (76.3 ± 10.5% vs 83.1 ± 10.1%, P = .002). Such changes were not seen in subjects who discontinued statin. Furthermore, the changes in LRNC volume and composition and fibrous tissue composition from 24 to 48 months were significantly different between the statin-continued and -discontinued groups (-25 ± 18 vs 9 ± 14 mm(3); P < .001) and (-4.6 ± 8.2% vs 1.3 ± 2.8%; P = .009) and (6.9 ± 6.8% vs 1.3 ± 5.4%, P = .018).Continued statin therapy leads to continued decrease in LRNC and increase in fibrous tissue, which indicates improved plaque stability and supports long-term statin therapy.
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