Analysis of circulating miRNA levels in coronary heart disease patients with varying degrees of cardiovascular complications risk. correlations with the MSCT-CA data
Open Access
- 14 October 2020
- journal article
- Published by Paediatrician Publishers LLC in Annals of the Russian academy of medical sciences
- Vol. 75 (4), 283-291
- https://doi.org/10.15690/vramn1325
Abstract
Rationale. Cardiovascular diseases remain the leading cause of human death in the world. Studying the role of regulatory non-coding RNAs, which include short single-stranded miRNA molecules, allows a more detailed understanding of the pathological processes underlying the progression of atherosclerosis. Objective — to compare the levels of circulating miRNAs in patients with coronary heart disease, confirmed by multislice computed tomography-coronarography (MSCT-CA), with risks of cardiovascular complications and clinical and demographic characteristics. To compare the profiles of circulating miRNAs in groups of patients with stable and unstable atherosclerotic plaques. Methods. MicroRNA levels in the plasma of peripheral blood of patients with coronary heart disease were determined using the miScript miRNA PCR Array MIHS-105Z kit (Qiagen). The significance of differences in miRNA levels between the compared groups was determined using the Mann–Whitney U-test. The correlations of the levels of circulating miRNAs with clinical and demographic parameters were evaluated using the Spearman correlation coefficient. Risk assessment of cardiovascular complications in these patients was carried out using validated scales (ACC/AHA, Framinghm, SCORE, MESA). Atherosclerotic plaque stability was evaluated using MSCT-CA. Results. The study showed a significant (p < 0.05) decrease in miR-16, miR-211, miR-195 miRNA levels in the plasma of patients with coronary heart disease, which correlated with an increase in cardiac vascular risk (CVR) according to ACC/AHA, Framingham and MESA. When comparing groups of patients with stable and unstable atherosclerotic plaques, the latter revealed an increase in the level of let-7b-5p circulating microRNA (p < 0.05). Conclusion. Significant associations of the three studied microRNAs with the estimated risk of CVR were identified. It is important to find circulating let-7b-5p in a group of patients with unstable atherosclerotic plaques. Correlations were established between the levels of circulating microRNAs and clinical and demographic characteristics of patients. The study shows the involvement of some microRNAs in the regulation of atherosclerosis.Keywords
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