Non-coding RNAs reflect many biological processes in the human body, including athero-sclerosis. In a cardiology outpatient department cohort (N = 83), we aimed to compare the levels of circulating microRNAs in groups with vulnerable plaques (N = 22), stable plaques (N = 23) and plaque-free (N = 17) depending on coronary computed tomography angiography and to evaluate associations of microRNA levels with calculated cardiovascular risks (CVR), based on the SCORE2 (+OP), ACC/AHA, ATP-III and MESA scales. Coronary computed tomography was performed on a 640-slice computed tomography scanner. Relative plasma levels of microRNA were assessed via a real-time polymerase chain reaction. We found significant differences in miR-143-3p levels (p = 0.0046 in plaque-free vs. vulnerable plaque groups) and miR-181b-5p (p = 0.0179 in stable vs. vulnerable plaques groups). Analysis of microRNA associations with CVR did not show significant differences for SCORE2 (+OP) and ATPIII scales. MiR-126-5p and miR-150-5p levels were significantly higher (p < 0.05) in patients with ACC/AHA risk >10% and miR-145-5p had linear relationships with ACC/AHA score (adjusted p = 0.0164). The relative plasma level of miR-195 was higher (p < 0.05) in patients with MESA risk > 7.5% and higher (p < 0.05) in patients with zero coronary calcium index (p = 0.036). A linear relationship with coronary calcium was observed for miR-126-3p (adjusted p = 0.0484). A positive correlation with high coronary calcium levels (> 100 Agatson units) was found for miR-181-5p (p = 0.036). Analyzing the biological pathways of these microRNAs, we suggest that miR-143-3p and miR-181-5p can be potential markers of the atherosclerosis process. Other miRNAs (miR-126-3p, 126-5p, 145-5p, 150-5p, 195-5p) can be considered as potential cardiovascular risk modifiers, but it is necessary to validate our results in a large prospective trial.
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 MannWhitney 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.
Сердечно-сосудистые заболевания занимают лидирующие позиции в заболеваемости, смертности и инвалидизации в большинстве стран. В структуре смертности от сердечно-сосудистых заболеваний лидируют ишемическая болезнь сердца и мозговой инсульт. В статье рассмат-риваются вопросы гиполипидемической терапии статинами в аспекте профилактики острого нарушения мозгового кровообращения. Пред-ставлены основные факторы риска атеросклероза и их распространенность. Авторами освещаются существующие стандарты применения статинов, данные доказательной медицины, полученные в рандомизированных клинических исследованиях, а также данные реальной кли-нической практики. Также рассматриваются возможные перспективные направления применения статинов с целью профилактики острого нарушения мозгового кровообращения. К последним можно отнести комбинированную терапию совместно с другими гиполипидемическими средствами, а также препаратами других групп, применение статинов с более ранних возрастов, реализацию на практике плейотропных эф-фектов статинов. Авторы наглядно демонстрируют, что реальная практика применения статинов существенно отстает от идеальной, отраженной в рекомендациях и рандомизированных клинических исследованиях. Одним их ключевых факторов этого является приверженность вра-чебным рекомендациям. Представлены основные факторы, которые могут повлиять на повышение приверженности пациентов к приему статинов и повысить эффективность их применения в реальной клинической практике. Cardiovascular diseases occupy a leading position in morbidity, mortality and disability in most countries. Ischemic heart disease and stroke lead in the structure of mortality from cardiovascular diseases. The issues of lipid-lowering therapy with statins in the aspect of stroke prevention are discussed in the article. The main risk factors of atherosclerosis and their prevalence are presented. Topical standards for statin use, evidence-based medicine data obtained in randomized clinical trials, and evidence from actual clinical practice are covered. Possible promising areas of statin use for the prevention of acute cerebrovascular accident are also considered. Combination therapy together with other lipid-lowering drugs, as well as drugs of other pharmacological groups, the use of statins from earlier ages, the practical implementation of pleiotropic effects of statins can be attributed to the latter. The authors clearly demonstrate that the actual practice of using statins lags significantly behind the ideal, reflected in the recommendations and randomized clinical trials. Adherence to medical recommendations is one of the key factors in this. The main factors that can influence the increase of adherence of patients to taking statins and increase the effectiveness of their application in real clinical practice are presented.
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