Epigenetic Basis of Oxidative Stress in Diabetic Coronary Atherosclerosis: A Shift in Focus from Genetic Prerogative

Author(s):  
Parimala Narne
2019 ◽  
Vol 9 (2) ◽  
pp. 97-101
Author(s):  
Julia Kotova ◽  
Anna Zuikova ◽  
Aleksander Pashkov ◽  
Natalia Strahova ◽  
Olga Krasnorutskaya

2019 ◽  
Vol 1 (9) ◽  
pp. 33-37
Author(s):  
Yu. A. Kotova ◽  
A. A. Zuykova ◽  
N. V. Strakhova ◽  
O. N. Krasnorutskaya

The high incidence of stable coronary heart disease, the increasing frequency of myocardial infarction, disability and mortality determine the relevance of the search for new risk markers and laboratory criteria for predicting this severe complication. The aim of the study was to develop an information panel for diagnosing the risk of myocardial infarction in patients with stable coronary heart disease, including significant generally accepted and potentially possible new laboratory parameters characterizing various pathogenetic links of coronary atherosclerosis. The study included 168 patients who were divided into 2 groups: Group 1 - with a history of myocardial infarction, Group 2 - without a history of myocardial infarction. In addition to the standard laboratory and instrumental examination, all patients were identified parameters of endothelial dysfunction, oxidative stress and chaperone activity as potential markers of myocardial infarction in patients with stable coronary heart disease. Assessment of the risk of myocardial infarction in patients with stable coronary heart disease was carried out using a logical and mathematical model, which combined the most informative laboratory indicators of oxidative stress, endothelial dysfunction, and chaperone activity, which are important in the occurrence and progression of coronary atherosclerosis, according to the results of preliminary comparative and correlation analysis. The basis for the development of the information panel was the method of decision trees. The study confirmed the relationship between the severity of coronary atherosclerosis and the occurrence of myocardial infarction. Comparative analysis of the selected groups of patients showed a higher level of oxidative stress, serum homocysteine concentrations and lower values of chaperone activity in Group 1. In patients with a history of myocardial infarction, C-reactive protein was significantly higher than in Group 2, indicating a more pronounced inflammatory response in patients with large atherosclerotic lesions. The study suggests the possibility of using mathematical information panels based on decision trees as a system for assessing the risk of acute myocardial infarction in patients with stable coronary heart disease. As a result of the analysis of the obtained model, laboratory biochemical factors of high risk of myocardial infarction were identified. Such factors were chaperone activity, serum homocysteine level, serum C-reactive protein concentration and superoxide dismutase activity.


PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7407
Author(s):  
Nisa Decharatchakul ◽  
Chatri Settasatian ◽  
Nongnuch Settasatian ◽  
Nantarat Komanasin ◽  
Upa Kukongviriyapan ◽  
...  

Background Oxidative stress modulates insulin resistant-related atherogenic dyslipidemia: hypertriglyceridemia (HTG) and low high-density lipoprotein cholesterol (HDL-C) level. Gene polymorphisms in superoxide dismutase (SOD2 and SOD3), glutathione peroxidase-3 (GPX3), and glutathione S-transferase theta-1 (GSTT1) may enable oxidative stress-related lipid abnormalities and severity of coronary atherosclerosis. The present study investigated the associations of antioxidant-related gene polymorphisms with atherogenic dyslipidemia and atherosclerotic severity in subjects with high risk of coronary artery disease (CAD). Methods Study population comprises of 396 subjects with high risk of CAD. Gene polymorphisms: SOD2 rs4880, SOD3 rs2536512 and rs2855262, GPX rs3828599, and GSTT1 (deletion) were evaluated the associations with HTG, low HDL-C, high TG/HDL-C ratio, and severity of coronary atherosclerosis. Results SOD2 rs4880-CC, SOD3 rs2536512-AA, rs2855262-CC, and GPX3 rs3828599-AA, but not GSTT1-/- individually increased risk of HTG combined with low HDL-C level. With a combination of five risk-genotypes as a genetic risk score (GRS), GRS ≥ 6 increased risks of low HDL-C, high TG/HDL-C ratio, and HTG combined with low HDL-C, comparing with GRS 0–2 [respective adjusted ORs (95% CI) = 2.70 (1.24–5.85), 3.11 (1.55–6.23), and 5.73 (2.22–14.77)]. Gene polymorphisms, though, were not directly associated with severity of coronary atherosclerosis; high TG/HDL-C ratio was associated with coronary atherosclerotic severity [OR = 2.26 (95% CI [1.17–4.34])]. Conclusion Combined polymorphisms in antioxidant-related genes increased the risk of dyslipidemia related to atherosclerotic severity, suggesting the combined antioxidant-related gene polymorphisms as predictor of atherogenic dyslipidemia.


Author(s):  
Юлия Александровна Котова ◽  
Анна Александровна Зуйкова ◽  
Ольга Николаевна Красноруцкая ◽  
Вероника Ивановна Шевцова

На сегодняшний день одним из значимых факторов риска развития ИБС является дислипидемия. На основании имеющихся исследований можно сделать вывод, что среди пациентов с корорнарным атеросклерозом во всех возрастных группах большинство случаев развития ИБС обусловлено именно дислипидемией. Целью исследования стало изучение изменения маркеров окислительного стресса, воспаления и эндотелиальной дисфункции у больных коронарной болезнью сердца в зависимости от наличия дислипидемии. Материалы и методы: мы обследовали 336 пациентов с диагнозом коронарная болезнь сердца, верифицированной стандартизированными валидизированными критериями и клинико-функциональными методами, в возрасте от 47 до 75 лет. Наличие коронарного атеросклероза подтверждали проведением коронароангиографии с последующим расчетом индекса Gensini. По наличию дислипидемии пациенты были разделены на 2 группы: 1 группа - имевшие дислипидемию - 168 человек, 2 группа - не имевшие дислипидемию - 168 человек. Статистическая обработка результатов исследования проводилась с помощью пакетов программ SPSS Statistics 20. Результаты: В исследовании показаны особенности выраженности коронарного атеросклероза, рассчитанного по индексу Gensini, в зависимости от дислипидемии. Выявлены достоверные различия по показателям окислительной модификации белков, супероксиддисмутазы, С-реактивного белка и гомоцистеина. Кроме того, установлены взаимосвязи между наличием дислипидемии и изучаемыми биомаркерами, а также клинико-антропометрическими показателями. Установлена взаимосвязь между дислипидемией, выраженностью коронарного атеросклероза и изучаемыми факторами риска. Таким образом, коррекция факторов риска КБС остается на субоптимальном уровне, и значительная часть пациентов не привержена к их коррекции. Отмечена низкая приверженность к гиполипидемической терапии у пациентов с признаками коронарного атеросклероза. В связи с этим сохраняется необходимость поиска маркеров остаточного риска, принимая во внимание значимость факторов риска To date, one of the most significant risk factors for the development of CHD is dyslipidemia. Based on the available studies, it can be concluded that among patients with coronary atherosclerosis in all age groups, the majority of cases of CHD development are caused by dyslipidemia. The aim of the study was to study the changes in markers of oxidative stress, inflammation and endothelial dysfunction in patients with coronary heart disease, depending on the presence of dyslipidemia. Materials and methods: we examined 336 patients with a diagnosis of coronary heart disease, verified by standardized validated criteria and clinical and functional methods, aged 47 to 75 years. The presence of coronary atherosclerosis was confirmed by coronary angiography with subsequent calculation of the Gensini index. According to the presence of dyslipidemia, the patients were divided into 2 groups: group 1 - those who had dyslipidemia - 168 people, group 2 - those who did not have dyslipidemia - 168 people. Statistical processing of the study results was carried out using the SPSS Statistics 20 software packages. Results: The study shows the features of the severity of coronary atherosclerosis, calculated by the Gensini index, depending on dyslipidemia. Significant differences in the parameters of oxidative modification of proteins, superoxide dismutase, C-reactive protein, and homocysteine were revealed. In addition, the relationships between the presence of dyslipidemia and the studied biomarkers, as well as clinical and anthropometric indicators, were established. The relationship between dyslipidemia, the severity of coronary atherosclerosis and the studied risk factors was established. Thus, the correction of CBS risk factors remains at a suboptimal level, and a significant proportion of patients are not committed to their correction. Low adherence to lipid-lowering therapy was noted in patients with signs of coronary atherosclerosis. In this regard, it remains necessary to search for markers of residual risk, taking into account the significance of risk factors


2001 ◽  
Vol 155 (2) ◽  
pp. 445-453 ◽  
Author(s):  
Yuji Yasunobu ◽  
Kozo Hayashi ◽  
Tetsuji Shingu ◽  
Togo Yamagata ◽  
Goro Kajiyama ◽  
...  

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