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Molecular Mechanisms of Atherosclerosis

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Guest Editor
Department of Medicine, Division of Diabetes, Metabolism, and Endocrinology, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-0064, Japan
Interests: macrophage; diabetic comorbidities; atherosclerosis
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Special Issue Information

Dear Colleagues,

Dyslipidemia and diabetes increase the risk of atherosclerotic cardiovascular diseases, such as coronary artery disease, peripheral artery disease, and stroke. Various biochemical pathways activated under dyslipidemia and diabetic conditions can contribute to the acceleration of atherosclerosis. It is important to reveal the mechanisms of early characteristic features of atherosclerosis, which is considered to play a crucial role in the development and progression of atherosclerotic cardiovascular disease. For this Special Issue, we invite original research, review articles, rare case reports, and literature reviews on recent progress in molecular mechanisms of atherosclerosis in humans as well as animals.

Dr. Michishige Terasaki
Guest Editor

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Keywords

  • atherosclerosis
  • dyslipidemia
  • genes
  • macrophages
  • diabetes
  • molecular mechanisms

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Published Papers (6 papers)

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Research

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19 pages, 2335 KiB  
Article
Alpinetin Exhibits Antioxidant and Anti-Inflammatory Effects in C57BL/6 Mice with Alcoholic Liver Disease Induced by the Lieber–DeCarli Ethanol Liquid Diet
by Tatjana Radosavljevic, Milica Brankovic, Jasmina Djuretić, Jelica Grujic-Milanovic, Marijana Kovacic, Jovan Jevtic, Sanja Stankovic, Janko Samardzic, Danijela Vucevic and Vladimir Jakovljevic
Int. J. Mol. Sci. 2025, 26(1), 86; https://doi.org/10.3390/ijms26010086 - 26 Dec 2024
Viewed by 611
Abstract
Alcohol-associated liver disease (ALD) is a common non-communicable chronic liver disease characterized by a spectrum of conditions ranging from steatosis and alcohol-associated steatohepatitis (AH) to fibrosis, cirrhosis, and hepatocellular carcinoma (HCC). The pathogenesis of ALD involves a complex interplay of various molecular, biochemical, [...] Read more.
Alcohol-associated liver disease (ALD) is a common non-communicable chronic liver disease characterized by a spectrum of conditions ranging from steatosis and alcohol-associated steatohepatitis (AH) to fibrosis, cirrhosis, and hepatocellular carcinoma (HCC). The pathogenesis of ALD involves a complex interplay of various molecular, biochemical, genetic, epigenetic, and environmental factors. While the mechanisms are well studied, therapeutic options remain limited. Alpinetin, a natural flavonoid with antioxidant and anti-inflammatory properties, has shown potential hepatoprotective effects, though its efficacy in ALD remains unexplored. This study investigated the hepatoprotective effects of alpinetin using a Lieber–DeCarli ethanol liquid diet model of ALD in C57BL/6 mice. Mice were divided into three groups: the control group, the ethanol group, and the ethanol group treated with alpinetin. Serum activity of ALT, AST, γ-GT, and ALP was measured to assess liver function, along with antioxidative and oxidative/nitrosative stress markers in liver tissue. Pro-inflammatory cytokines and endoplasmic reticulum (ER) stress parameters in liver tissue were also evaluated. Histological assessment of disease activity was performed using the SALVE grading and staging system. Treatment with alpinetin significantly reduced serum levels of ALT, AST, γ-GT, and oxidative/nitrosative stress markers while increasing antioxidative markers. The levels of pro-inflammatory cytokines and ER stress parameters were significantly decreased. Histological analysis demonstrated reduced steatosis, hepatocyte ballooning, and inflammation. These findings suggest that alpinetin holds promise as a potential therapeutic agent for managing ALD. Full article
(This article belongs to the Special Issue Molecular Mechanisms of Atherosclerosis)
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12 pages, 1123 KiB  
Article
Transcriptional Activity of Tumor Necrosis Factor Alpha Genes and Their Receptors in Patients with Varying Degrees of Coronary Artery Disease
by Katarzyna Potyka and Józefa Dąbek
Int. J. Mol. Sci. 2024, 25(23), 13102; https://doi.org/10.3390/ijms252313102 - 5 Dec 2024
Viewed by 931
Abstract
Coronary artery disease and its complications are one of the most common causes of morbidity and death worldwide. The aims of this study were to assess the transcriptional activity of the studied TNF-α genes and their receptors in patients with various degrees of [...] Read more.
Coronary artery disease and its complications are one of the most common causes of morbidity and death worldwide. The aims of this study were to assess the transcriptional activity of the studied TNF-α genes and their receptors in patients with various degrees of coronary artery disease and in the control group, as well as to attempt to link it with the size of the left ventricular ejection fraction and the number of diseased coronary arteries. Taking into account the inclusion and exclusion criteria, a total of 240 people (100%) qualified for this study. For proper interpretation of the results of the molecular analyzes, the study group (240, 100%) was divided into a control group (C: n = 60; 25%), a group of patients with early coronary artery disease (W: n = 60; 25%), a group with stable coronary artery disease (S: n = 60; 25%), and a group of patients with acute coronary syndrome (ACS: n = 60; 25%). The transcriptional activity of the TNF-α genes and their receptors was assessed in peripheral blood mononuclear cells by a quantitative real-time polymerase chain reaction. The expression of the studied genes was inferred from the number of mRNA copies per 1 ug of total RNA. The analysis of the obtained results showed a significant increase in the transcriptional activity of the TNF-α gene with the severity of coronary artery disease, accompanied by a decrease in the activity of its receptor genes. Taking into account the number of affected coronary arteries and the size of the ejection fraction in the examined patients, there were no statistically significant differences in the transcriptional activity of the TNF-α receptor gene type I and II. The observed increase in the transcriptional activity of the TNF-α gene with a concomitant decrease in the activity of its receptor genes with the advancement of coronary artery disease, compared to the control group, may indicate their significant participation in the development and progression of the disease and constitute a useful marker in non-invasive, early diagnostics. In the patients of the study group, no changes in the transcriptional activity of the TNF-α genes and their receptors were demonstrated depending on the number of diseased coronary arteries and the size of the ejection fraction of the left ventricle. Full article
(This article belongs to the Special Issue Molecular Mechanisms of Atherosclerosis)
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24 pages, 4757 KiB  
Article
An 8-SNP LDL Cholesterol Polygenic Score: Associations with Cardiovascular Risk Traits, Familial Hypercholesterolemia Phenotype, and Premature Coronary Heart Disease in Central Romania
by Ion Bogdan Mănescu, Manuela Rozalia Gabor, George Valeriu Moldovan, László Hadadi, Adina Huțanu, Claudia Bănescu and Minodora Dobreanu
Int. J. Mol. Sci. 2024, 25(18), 10038; https://doi.org/10.3390/ijms251810038 - 18 Sep 2024
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Abstract
Familial hypercholesterolemia (FH) is the most significant inherited risk factor for coronary heart disease (CHD). Current guidelines focus on monogenic FH, but the polygenic form is more common and less understood. This study aimed to assess the clinical utility of an 8-SNP LDLC [...] Read more.
Familial hypercholesterolemia (FH) is the most significant inherited risk factor for coronary heart disease (CHD). Current guidelines focus on monogenic FH, but the polygenic form is more common and less understood. This study aimed to assess the clinical utility of an 8-SNP LDLC polygenic score in a central Romanian cohort. The cohort included 97 healthy controls and 125 patients with premature (P)CHD. The weighted LDLC polygenic risk score (wPRS) was analyzed for associations with relevant phenotypic traits, PCHD risk, and clinical FH diagnosis. The wPRS positively correlated with LDLC and DLCN scores, and LDLC concentrations could be predicted by wPRS. A trend of increasing LDLC and DLCN scores with wPRS deciles was observed. A +1 SD increase in wPRS was associated with a 36% higher likelihood of having LDLC > 190 mg/dL and increases in LDLC (+0.20 SD), DLCN score (+0.16 SD), and BMI (+0.15 SD), as well as a decrease in HDLC (−0.14 SD). Although wPRS did not predict PCHD across the entire spectrum of values, individuals above the 90th percentile were three times more likely to have PCHD compared to those within the 10th or 20th percentiles. Additionally, wPRS > 45th percentile identified “definite” clinical FH (DLCN score > 8) with 100% sensitivity and 45% specificity. The LDLC polygenic score correlates with key phenotypic traits, and individuals with high scores are more likely to have PCHD. Implementing this genetic tool may enhance risk prediction and patient stratification. These findings, the first of their kind in Romania, are consistent with the existing literature. Full article
(This article belongs to the Special Issue Molecular Mechanisms of Atherosclerosis)
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Review

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27 pages, 2901 KiB  
Review
Current Strategies to Guide the Antiplatelet Therapy in Acute Coronary Syndromes
by Isabella Russo, Carola Griffith Brookles, Cristina Barale, Elena Melchionda, Amir Hassan Mousavi, Carloalberto Biolè, Alessandra Chinaglia and Matteo Bianco
Int. J. Mol. Sci. 2024, 25(7), 3981; https://doi.org/10.3390/ijms25073981 - 3 Apr 2024
Cited by 3 | Viewed by 2938
Abstract
The role of antiplatelet therapy in patients with acute coronary syndromes is a moving target with considerable novelty in the last few years. The pathophysiological basis of the treatment depends on platelet biology and physiology, and the interplay between these aspects and clinical [...] Read more.
The role of antiplatelet therapy in patients with acute coronary syndromes is a moving target with considerable novelty in the last few years. The pathophysiological basis of the treatment depends on platelet biology and physiology, and the interplay between these aspects and clinical practice must guide the physician in determining the best therapeutic options for patients with acute coronary syndromes. In the present narrative review, we discuss the latest novelties in the antiplatelet therapy of patients with acute coronary syndromes. We start with a description of platelet biology and the role of the main platelet signal pathways involved in platelet aggregation during an acute coronary syndrome. Then, we present the latest evidence on the evaluation of platelet function, focusing on the strengths and weaknesses of each platelet’s function test. We continue our review by describing the role of aspirin and P2Y12 inhibitors in the treatment of acute coronary syndromes, critically appraising the available evidence from clinical trials, and providing current international guidelines and recommendations. Finally, we describe alternative therapeutic regimens to standard dual antiplatelet therapy, in particular for patients at high bleeding risk. The aim of our review is to give a comprehensive representation of current data on antiplatelet therapy in patients with acute coronary syndromes that could be useful both for clinicians and basic science researchers to be up-to-date on this complex topic. Full article
(This article belongs to the Special Issue Molecular Mechanisms of Atherosclerosis)
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16 pages, 1685 KiB  
Review
miRNA Regulation of Cell Phenotype and Parietal Remodeling in Atherosclerotic and Non-Atherosclerotic Aortic Aneurysms: Differences and Similarities
by Sonia Terriaca, Amedeo Ferlosio, Maria Giovanna Scioli, Francesca Coppa, Fabio Bertoldo, Calogera Pisano, Beatrice Belmonte, Carmela Rita Balistreri and Augusto Orlandi
Int. J. Mol. Sci. 2024, 25(5), 2641; https://doi.org/10.3390/ijms25052641 - 24 Feb 2024
Cited by 1 | Viewed by 2309
Abstract
Aortic aneurysms are a serious health concern as their rupture leads to high morbidity and mortality. Abdominal aortic aneurysms (AAAs) and thoracic aortic aneurysms (TAAs) exhibit differences and similarities in their pathophysiological and pathogenetic features. AAA is a multifactorial disease, mainly associated with [...] Read more.
Aortic aneurysms are a serious health concern as their rupture leads to high morbidity and mortality. Abdominal aortic aneurysms (AAAs) and thoracic aortic aneurysms (TAAs) exhibit differences and similarities in their pathophysiological and pathogenetic features. AAA is a multifactorial disease, mainly associated with atherosclerosis, characterized by a relevant inflammatory response and calcification. TAA is rarely associated with atherosclerosis and in some cases is associated with genetic mutations such as Marfan syndrome (MFS) and bicuspid aortic valve (BAV). MFS-related and non-genetic or sporadic TAA share aortic degeneration with endothelial-to-mesenchymal transition (End-Mt) and fibrosis, whereas in BAV TAA, aortic degeneration with calcification prevails. microRNA (miRNAs) contribute to the regulation of aneurysmatic aortic remodeling. miRNAs are a class of non-coding RNAs, which post-transcriptionally regulate gene expression. In this review, we report the involvement of deregulated miRNAs in the different aortic remodeling characterizing AAAs and TAAs. In AAA, miRNA deregulation appears to be involved in parietal inflammatory response, smooth muscle cell (SMC) apoptosis and aortic wall calcification. In sporadic and MFS-related TAA, miRNA deregulation promotes End-Mt, SMC myofibroblastic phenotypic switching and fibrosis with glycosaminoglycan accumulation. In BAV TAA, miRNA deregulation sustains aortic calcification. Those differences may support the development of more personalized therapeutic approaches. Full article
(This article belongs to the Special Issue Molecular Mechanisms of Atherosclerosis)
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Other

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9 pages, 1522 KiB  
Case Report
A Clinical Case of Probable Sitosterolemia
by Michishige Terasaki, Mikiko Izumi and Sho-ichi Yamagishi
Int. J. Mol. Sci. 2024, 25(3), 1535; https://doi.org/10.3390/ijms25031535 - 26 Jan 2024
Viewed by 1909
Abstract
Sitosterolemia is a rare genetic lipid disorder characterized by elevated plant sterols in the serum. A 24-year-old Japanese woman was referred to our hospital due to a high serum low-density lipoprotein cholesterol (LDL-C) level of 332 mg/dL. At first, she was suspected to [...] Read more.
Sitosterolemia is a rare genetic lipid disorder characterized by elevated plant sterols in the serum. A 24-year-old Japanese woman was referred to our hospital due to a high serum low-density lipoprotein cholesterol (LDL-C) level of 332 mg/dL. At first, she was suspected to suffer from familial hypercholesterolemia, and thus received lipid-lowering agents. Although her LDL-C level remained high (220 mg/dL) with diet therapy plus 10 mg/day rosuvastatin, it was drastically decreased to 46 mg/dL with the addition of 10 mg/day ezetimibe. Finally, her LDL-C level was well-controlled at about 70 mg/dL with 10 mg/day ezetimibe alone. Furthermore, while her serum sitosterol level was elevated at 10.5 μg/mL during the first visit to our hospital, it decreased to 3.6 μg/mL with the 10 mg/day ezetimibe treatment alone. These observations suggest that she might probably suffer from sitosterolemia. Therefore, targeted gene sequencing analysis was performed using custom panels focusing on the exome regions of 21 lipid-associated genes, including ABCG5, ABCG8, and familial hypercholesterolemia-causing genes (LDL receptor, LDLRAP1, PCSK9, and apolipoprotein B). We finally identified a heterozygous ABCG8 variant (NM_022437.2:c.1285A>G or NP_071882.1:p.Met429Val) in our patient. The same gene mutation was detected in her mother. We report here a rare case exhibiting probable sitosterolemia caused by a heterozygous Met429Val variant in the ABCG8 gene and additional unknown variants. Full article
(This article belongs to the Special Issue Molecular Mechanisms of Atherosclerosis)
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