Jiannan Dai1, Jinwei Tian2, Jingbo Hou1, Lei Xing1, Shengliang Liu1, Lijia Ma1, Huai Yu1, Xuefeng Ren1, Nana Dong1, Bo Yu3. 1. Department of Cardiology, The 2nd Affiliated Hospital of Harbin Medical University, The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China. 2. Department of Cardiology, The 2nd Affiliated Hospital of Harbin Medical University, The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China. Electronic address: tianjinweidr2009@163.com. 3. Department of Cardiology, The 2nd Affiliated Hospital of Harbin Medical University, The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China. Electronic address: yubodr@163.com.
Abstract
BACKGROUND: Cholesterol Crystals (ChCs) are recognized as a hallmark of advanced atherosclerotic lesions. Previous animal and histopathology studies have revealed that Cholesterol crystallization trigger a local inflammatory response and plaque rupture. We sought to investigate the in vivo relationship between ChCs and culprit lesion vulnerability in patients with acute coronary syndrome (ACS). METHODS: 206 culprit lesions from 206 patients with ACS who underwent optical coherence tomography (OCT) imaging were divided into 2 groups based on the presence or absence of ChCs. Culprit lesions characteristics were compared between ChCs and Non-ChCs groups. RESULTS: For overall ACS patients, culprit lesions with ChCs had higher incidence of macrophages accumulation (77.8% vs. 40.0%, p < 0.001), microchannel (67.9% vs. 24.8%, p < 0.001), plaque rupture (58.0% vs. 36.0%, p = 0.001), thrombosis (66.7% vs. 49.6%, p = 0.016) and spotty calcification (35.8% vs. 10.4%, p < 0.001). In addition, the mean lipid arc (274.2 ± 57.6° vs. 228.1 ± 66.3°, p < 0.001) was larger and the lipid index (3826.1 ± 2111.4 vs. 2855.0 ± 1753.0, p = 0.001) was greater. The frequency of ChCs was significantly higher in patients with STEMI, as compared with NSTEACS (50.8% vs. 34.7%, p = 0.032). Larger lipid arc, higher incidence of macrophages accumulation and that of microchannel were observed in culprit lesions with ChCs in both STEMI (p = 0.028, p < 0.001, and p = 0.002 respectively) and NSTEACS (p < 0.001, p < 0.001, and p < 0.001 respectively) subgroups. CONCLUSION: ChCs were frequently associated with characteristics of vulnerable plaques in ACS culprit lesions as well as in STEMI and NSTEACS subgroups. ChCs and vulnerable plaque features were more often observed in culprit lesions of STEMI patients compared to NSTEACS patients.
BACKGROUND:Cholesterol Crystals (ChCs) are recognized as a hallmark of advanced atherosclerotic lesions. Previous animal and histopathology studies have revealed that Cholesterol crystallization trigger a local inflammatory response and plaque rupture. We sought to investigate the in vivo relationship between ChCs and culprit lesion vulnerability in patients with acute coronary syndrome (ACS). METHODS: 206 culprit lesions from 206 patients with ACS who underwent optical coherence tomography (OCT) imaging were divided into 2 groups based on the presence or absence of ChCs. Culprit lesions characteristics were compared between ChCs and Non-ChCs groups. RESULTS: For overall ACS patients, culprit lesions with ChCs had higher incidence of macrophages accumulation (77.8% vs. 40.0%, p < 0.001), microchannel (67.9% vs. 24.8%, p < 0.001), plaque rupture (58.0% vs. 36.0%, p = 0.001), thrombosis (66.7% vs. 49.6%, p = 0.016) and spottycalcification (35.8% vs. 10.4%, p < 0.001). In addition, the mean lipid arc (274.2 ± 57.6° vs. 228.1 ± 66.3°, p < 0.001) was larger and the lipid index (3826.1 ± 2111.4 vs. 2855.0 ± 1753.0, p = 0.001) was greater. The frequency of ChCs was significantly higher in patients with STEMI, as compared with NSTEACS (50.8% vs. 34.7%, p = 0.032). Larger lipid arc, higher incidence of macrophages accumulation and that of microchannel were observed in culprit lesions with ChCs in both STEMI (p = 0.028, p < 0.001, and p = 0.002 respectively) and NSTEACS (p < 0.001, p < 0.001, and p < 0.001 respectively) subgroups. CONCLUSION: ChCs were frequently associated with characteristics of vulnerable plaques in ACS culprit lesions as well as in STEMI and NSTEACS subgroups. ChCs and vulnerable plaque features were more often observed in culprit lesions of STEMI patients compared to NSTEACS patients.
Authors: Timothy D O'Connell; Richard Preston Mason; Matthew J Budoff; Ann Marie Navar; Gregory C Shearer Journal: Eur Heart J Suppl Date: 2020-10-06 Impact factor: 1.803