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Ngai D, Sukka SR, Tabas I. Crosstalk between efferocytic myeloid cells and T-cells and its relevance to atherosclerosis. Front Immunol 2024; 15:1403150. [PMID: 38873597 PMCID: PMC11169609 DOI: 10.3389/fimmu.2024.1403150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 05/17/2024] [Indexed: 06/15/2024] Open
Abstract
The interplay between myeloid cells and T-lymphocytes is critical to the regulation of host defense and inflammation resolution. Dysregulation of this interaction can contribute to the development of chronic inflammatory diseases. Important among these diseases is atherosclerosis, which refers to focal lesions in the arterial intima driven by elevated apolipoprotein B-containing lipoproteins, notably low-density lipoprotein (LDL), and characterized by the formation of a plaque composed of inflammatory immune cells, a collection of dead cells and lipids called the necrotic core, and a fibrous cap. As the disease progresses, the necrotic core expands, and the fibrous cap becomes thin, which increases the risk of plaque rupture or erosion. Plaque rupture leads to a rapid thrombotic response that can give rise to heart attack, stroke, or sudden death. With marked lowering of circulating LDL, however, plaques become more stable and cardiac risk is lowered-a process known as atherosclerosis regression. A critical aspect of both atherosclerosis progression and regression is the crosstalk between innate (myeloid cells) and adaptive (T-lymphocytes) immune cells. Myeloid cells are specialized at clearing apoptotic cells by a process called efferocytosis, which is necessary for inflammation resolution. In advanced disease, efferocytosis is impaired, leading to secondary necrosis of apoptotic cells, inflammation, and, most importantly, defective tissue resolution. In regression, efferocytosis is reawakened aiding in inflammation resolution and plaque stabilization. Here, we will explore how efferocytosing myeloid cells could affect T-cell function and vice versa through antigen presentation, secreted factors, and cell-cell contacts and how this cellular crosstalk may contribute to the progression or regression of atherosclerosis.
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Affiliation(s)
- David Ngai
- Department of Medicine, Columbia University Irving Medical Center, New York, NY, United States
| | - Santosh R. Sukka
- Department of Medicine, Columbia University Irving Medical Center, New York, NY, United States
| | - Ira Tabas
- Department of Medicine, Columbia University Irving Medical Center, New York, NY, United States
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY, United States
- Department of Physiology, Columbia University Irving Medical Center, New York, NY, United States
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Munno M, Mallia A, Greco A, Modafferi G, Banfi C, Eligini S. Radical Oxygen Species, Oxidized Low-Density Lipoproteins, and Lectin-like Oxidized Low-Density Lipoprotein Receptor 1: A Vicious Circle in Atherosclerotic Process. Antioxidants (Basel) 2024; 13:583. [PMID: 38790688 PMCID: PMC11118168 DOI: 10.3390/antiox13050583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
Atherosclerosis is a complex condition that involves the accumulation of lipids and subsequent plaque formation in the arterial intima. There are various stimuli, cellular receptors, and pathways involved in this process, but oxidative modifications of low-density lipoprotein (ox-LDL) are particularly important in the onset and progression of atherosclerosis. Ox-LDLs promote foam-cell formation, activate proinflammatory pathways, and induce smooth-muscle-cell migration, apoptosis, and cell death. One of the major receptors for ox-LDL is LOX-1, which is upregulated in several cardiovascular diseases, including atherosclerosis. LOX-1 activation in endothelial cells promotes endothelial dysfunction and induces pro-atherogenic signaling, leading to plaque formation. The binding of ox-LDLs to LOX-1 increases the generation of reactive oxygen species (ROS), which can induce LOX-1 expression and oxidize LDLs, contributing to ox-LDL generation and further upregulating LOX-1 expression. This creates a vicious circle that is amplified in pathological conditions characterized by high plasma levels of LDLs. Although LOX-1 has harmful effects, the clinical significance of inhibiting this protein remains unclear. Further studies both in vitro and in vivo are needed to determine whether LOX-1 inhibition could be a potential therapeutic target to counteract the atherosclerotic process.
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Affiliation(s)
- Marco Munno
- Unit of Functional Proteomics, Metabolomics and Network Analysis, Centro Cardiologico Monzino, 20138 Milan, Italy; (M.M.); (A.M.); (A.G.); (G.M.); (S.E.)
| | - Alice Mallia
- Unit of Functional Proteomics, Metabolomics and Network Analysis, Centro Cardiologico Monzino, 20138 Milan, Italy; (M.M.); (A.M.); (A.G.); (G.M.); (S.E.)
- Dipartimento di Biologia e Biotecnologie “Lazzaro Spallanzani”, Università di Pavia, 27100 Pavia, Italy
| | - Arianna Greco
- Unit of Functional Proteomics, Metabolomics and Network Analysis, Centro Cardiologico Monzino, 20138 Milan, Italy; (M.M.); (A.M.); (A.G.); (G.M.); (S.E.)
| | - Gloria Modafferi
- Unit of Functional Proteomics, Metabolomics and Network Analysis, Centro Cardiologico Monzino, 20138 Milan, Italy; (M.M.); (A.M.); (A.G.); (G.M.); (S.E.)
| | - Cristina Banfi
- Unit of Functional Proteomics, Metabolomics and Network Analysis, Centro Cardiologico Monzino, 20138 Milan, Italy; (M.M.); (A.M.); (A.G.); (G.M.); (S.E.)
| | - Sonia Eligini
- Unit of Functional Proteomics, Metabolomics and Network Analysis, Centro Cardiologico Monzino, 20138 Milan, Italy; (M.M.); (A.M.); (A.G.); (G.M.); (S.E.)
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Ji M, Wei Y, Ye Z, Hong X, Yu X, Du R, Li Q, Sun W, Liu D. In Vivo Fluorescent Labeling of Foam Cell-Derived Extracellular Vesicles as Circulating Biomarkers for In Vitro Detection of Atherosclerosis. J Am Chem Soc 2024; 146:10093-10102. [PMID: 38545938 DOI: 10.1021/jacs.4c01173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
Real-time monitoring of the development of atherosclerosis (AS) is key to the management of cardiovascular disease (CVD). However, existing laboratory approaches lack sensitivity and specificity, mostly due to the dearth of reliable AS biomarkers. Herein, we developed an in vivo fluorescent labeling strategy that allows specific staining of the foam cell-derived extracellular vesicles (EVs) in atherosclerotic plaques, which are released into the blood as circulating biomarkers for in vitro detection of AS. This strategy relies on a self-assembled nanoprobe that could recognize foam cells specifically, where the probe is degraded by the intracellular HClO to produce a trifluoromethyl-bearing boron-dipyrromethene fluorophore (termed B-CF3), a lipophilic dye that can be transferred to the exosomal membranes. These circulating B-CF3-stained EVs can be detected directly on a fluorescence spectrometer or microplate reader without resorting to any sophisticated analytical method. This liquid-biopsy format enables early detection and real-time differentiation of lesion vulnerability during AS progression, facilitating effective CVD management.
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Affiliation(s)
- Moxuan Ji
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Centers for Cell Responses and New Organic Matter, Research Center for Analytical Sciences, and Tianjin Key Laboratory of Molecular Recognition and Biosensing, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yongchun Wei
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Centers for Cell Responses and New Organic Matter, Research Center for Analytical Sciences, and Tianjin Key Laboratory of Molecular Recognition and Biosensing, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhuo Ye
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Xiaoqin Hong
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Centers for Cell Responses and New Organic Matter, Research Center for Analytical Sciences, and Tianjin Key Laboratory of Molecular Recognition and Biosensing, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiaoxuan Yu
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Centers for Cell Responses and New Organic Matter, Research Center for Analytical Sciences, and Tianjin Key Laboratory of Molecular Recognition and Biosensing, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Rui Du
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Centers for Cell Responses and New Organic Matter, Research Center for Analytical Sciences, and Tianjin Key Laboratory of Molecular Recognition and Biosensing, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Qiang Li
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Centers for Cell Responses and New Organic Matter, Research Center for Analytical Sciences, and Tianjin Key Laboratory of Molecular Recognition and Biosensing, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Wei Sun
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Dingbin Liu
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Centers for Cell Responses and New Organic Matter, Research Center for Analytical Sciences, and Tianjin Key Laboratory of Molecular Recognition and Biosensing, College of Chemistry, Nankai University, Tianjin 300071, China
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Zhu Y, Fang Y, Wang Y, Han D, Liu J, Tian L, Xu M, Wang Y, Cao F. Cluster of Differentiation-44-Targeting Prussian Blue Nanoparticles Onloaded with Colchicine for Atherosclerotic Plaque Regression in a Mice Model. ACS Biomater Sci Eng 2024; 10:1530-1543. [PMID: 38372216 DOI: 10.1021/acsbiomaterials.3c01518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Atherosclerosis management heavily relies on the suppression of the inflammatory response of macrophages. Colchicine's potent anti-inflammatory properties make it a promising candidate for secondary prevention against cardiovascular disease. However, its high toxicity and numerous adverse effects limit its clinical use. To address this, there is an urgent need for specific drug delivery systems to boost the level of accumulation of colchicine within atherosclerotic plaques. In this study, the cluster of differentiation-44 receptor was verified to be overexpressed in inflammatory macrophages within plaques both in vitro and in vivo. Subsequently, a Prussian blue-based nanomedical loading system with hyaluronic acid (HA) coating was constructed, and its effects were observed on the atherosclerosis regression. Colchicine and Cy5.5 were encapsulated within Prussian blue nanoparticles through self-assembly, followed by conjugation with hyaluronic acid to create col@PBNP@HA. The formulated col@PBNP@HA displayed a cubic shape and scattered distribution. Importantly, col@PBNP@HA demonstrated specific cellular uptake into lipopolysaccharide-stimulated macrophages. In vitro experiments showed that col@PBNP@HA more effectively inhibited expression of inflammatory factors and scavenged reactive oxygen species compared with the control group, which were treated with colchicine. Furthermore, col@PBNP@HA exhibited its specific and higher accumulation in aortic plaque analysis via fluorescence imaging of aortas. After 4 weeks, administration of col@PBNP@HA resulted in significant atherosclerosis regression in the mice model, with therapeutic effects superior to those of free colchicine. Similar to colchicine, col@PBNP@HA inhibited the secretion of inflammation factors and scavenged ROS through the regulation of the toll-like receptor 4 (TLR4)/myeloid differentiation factor 88 (Myd88)/nuclear factor kappa-B (NF-κB) and peroxisome proliferator-activated receptor-gamma coactivator-1α (PGC-1α) signaling pathway. In summary, col@PBNP@HA demonstrated specific targeting ability to inflammatory plaques and exerted beneficial effects on atherosclerosis regression through TLR4/Myd88/NF-κB and PGC-1α modulation.
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Affiliation(s)
- Yan Zhu
- School of Medicine, Nankai University, Tianjin 300071, China
- Department of Cardiology, The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Second Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Yan Fang
- Department of Cardiology, The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Second Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Yujia Wang
- Department of Cardiology, The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Second Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Dong Han
- Department of Cardiology, The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Second Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Jing Liu
- Department of Cardiology, The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Second Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Lei Tian
- Department of Cardiology, The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Second Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Mengqi Xu
- Department of Cardiology, The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Second Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Yabin Wang
- Department of Cardiology, The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Second Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Feng Cao
- School of Medicine, Nankai University, Tianjin 300071, China
- Department of Cardiology, The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Second Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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Harada W, Banshodani M, Shimamoto F, Shintaku S, Moriishi M, Masaki T, Kawanishi H. Encapsulating Peritoneal Sclerosis 43 Years after Distal Gastrectomy for Early Gastric Cancer. Intern Med 2024; 63:659-663. [PMID: 37468244 PMCID: PMC10982008 DOI: 10.2169/internalmedicine.2037-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 06/11/2023] [Indexed: 07/21/2023] Open
Abstract
We herein report a case of encapsulating peritoneal sclerosis (EPS) in a patient without chronic kidney disease after gastrectomy. A 69-year-old man underwent distal gastrectomy for early gastric cancer at 25 years old. After 43 years, he developed bowel obstruction and underwent enterolysis of the encapsulated small intestine. A pathological examination of the capsular membranes revealed inflammation, foam, and giant cells that destroyed foreign substances. The patient was discharged 1.5 months later. Foreign body reactions to surgical instruments used in gastrectomy are considered a cause of EPS. EPS due to foreign body reactions to surgical instruments should also be considered in such cases.
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Affiliation(s)
- Wataru Harada
- Department of Kidney Disease and Blood Purification Therapy, Akane-Foundation, Tsuchiya General Hospital, Japan
- Department of Nephrology, Hiroshima University Hospital, Japan
| | - Masataka Banshodani
- Department of Kidney Disease and Blood Purification Therapy, Akane-Foundation, Tsuchiya General Hospital, Japan
| | - Fumio Shimamoto
- Diagnostic Pathology, Pathology Clinic, Japan
- Department of Nursing, Faculty of Health Sciences Dean, Hiroshima Cosmopolitan University, Japan
| | - Sadanori Shintaku
- Department of Kidney Disease and Blood Purification Therapy, Akane-Foundation, Tsuchiya General Hospital, Japan
| | - Misaki Moriishi
- Department of Kidney Disease and Blood Purification Therapy, Akane-Foundation, Tsuchiya General Hospital, Japan
| | - Takao Masaki
- Department of Nephrology, Hiroshima University Hospital, Japan
| | - Hideki Kawanishi
- Department of Kidney Disease and Blood Purification Therapy, Akane-Foundation, Tsuchiya General Hospital, Japan
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Wang SH, Guo C, Cui WJ, Xu QX, Zhang J, Jiang JZ, Liu Y, Chen S, Chen C, Cheng JT, Liu A. Two pyrrole acids isolated from Phyllanthus emblica L. and their bioactivities. NATURAL PRODUCTS AND BIOPROSPECTING 2023; 13:26. [PMID: 37639046 PMCID: PMC10462542 DOI: 10.1007/s13659-023-00393-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 08/21/2023] [Indexed: 08/29/2023]
Abstract
An undescribed pyrrole acid, 1-(4'-methoxy-4'-oxobutyl)-1 H-pyrrole-2,5-dicarboxylic acid (1) and one known pyrrole acid (2) were isolated from the fruits of Phyllanthus emblica. The structures of these compounds were elucidated via the comprehensive analyses of IR, HRESIMS, 1D and 2D spectroscopic data. A series of biological assays revealed that compounds 1 and 2 could inhibit LPS-induced over-production of nitric oxide (NO), interleukin-6 (IL-6), monocyte chemotactic protein 1 (MCP-1) and tumor necrosis factor-α (TNF-α) by reducing the phosphorylation of extracellular regulated protein kinases (ERK) and c-Jun N-terminal kinases (JNK) in RAW 264.7 cells. Additionally, compounds 1 and 2 were found to reduce lipid deposition and increase the mRNA expression of ATP-binding cassette transporter A1 in oxidized low-density lipoprotein-treated RAW264.7 macrophages.
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Affiliation(s)
- Shu-Hui Wang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Cong Guo
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Wen-Jin Cui
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Qing-Xia Xu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Jun Zhang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Jin-Zhu Jiang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Yan Liu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Sha Chen
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Chang Chen
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Jin-Tang Cheng
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
| | - An Liu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
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Lee SK, Kam EH, Cheon SY. Autophagy Enhancers Regulate Cholesterol-Induced Cytokine Secretion and Cytotoxicity in Macrophages. J Lipid Atheroscler 2023; 12:189-200. [PMID: 37265848 PMCID: PMC10232223 DOI: 10.12997/jla.2023.12.2.189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/13/2023] [Accepted: 05/03/2023] [Indexed: 06/03/2023] Open
Abstract
Objective Hypercholesterolaemia transforms macrophages into lipid-laden foam cells in circulation, which can activate the immune response. Compromised autophagy and inflammatory cytokines are involved in the pathogenesis and progression of metabolic diseases. The aim of this study was to identify the role of autophagy as a modulator of the inflammatory response and cytotoxicity in macrophages under hypercholesterolaemic conditions. Methods High cholesterol-induced cytokine secretion and alteration of autophagy-associated molecules were confirmed by cytokine array and western blot analysis, respectively. To confirm whether autophagic regulation affects high cholesterol-induced cytokine release and cytotoxicity, protein levels of autophagic molecules, cell viability, and cytotoxicity were measured in cultured macrophages treated autophagy enhancers. Results Cholesterol treatment increased cytokine secretion, cellular toxicity, and lactate dehydrogenase release in lipopolysaccharide (LPS)-primed macrophages. Concomitantly, altered levels of autophagy-related molecules were detected in LPS-primed macrophages under hypercholesterolaemic conditions. Treatment with autophagy enhancers reversed the secretion of cytokines, abnormally expressed autophagy-associated molecules, and cytotoxicity of LPS-primed macrophages. Conclusion Autophagy enhancers inhibit inflammatory cytokine secretion and reduce cytotoxicity under metabolic disturbances, such as hypercholesterolaemia. Modulation of autophagy may be a novel approach to control the inflammatory response observed in metabolic diseases.
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Affiliation(s)
- Su Kyoung Lee
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
| | - Eun Hee Kam
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - So Yeong Cheon
- Department of Biotechnology, College of Biomedical & Health Science, Konkuk University, Chungju, Korea
- Research Institute for Biomedical & Health Science, Konkuk University, Chungju, Korea
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Shanmugham M, Bellanger S, Leo CH. Gut-Derived Metabolite, Trimethylamine-N-oxide (TMAO) in Cardio-Metabolic Diseases: Detection, Mechanism, and Potential Therapeutics. Pharmaceuticals (Basel) 2023; 16:ph16040504. [PMID: 37111261 PMCID: PMC10142468 DOI: 10.3390/ph16040504] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/17/2023] [Accepted: 03/23/2023] [Indexed: 03/30/2023] Open
Abstract
Trimethylamine N-oxide (TMAO) is a biologically active gut microbiome-derived dietary metabolite. Recent studies have shown that high circulating plasma TMAO levels are closely associated with diseases such as atherosclerosis and hypertension, and metabolic disorders such as diabetes and hyperlipidemia, contributing to endothelial dysfunction. There is a growing interest to understand the mechanisms underlying TMAO-induced endothelial dysfunction in cardio-metabolic diseases. Endothelial dysfunction mediated by TMAO is mainly driven by inflammation and oxidative stress, which includes: (1) activation of foam cells; (2) upregulation of cytokines and adhesion molecules; (3) increased production of reactive oxygen species (ROS); (4) platelet hyperreactivity; and (5) reduced vascular tone. In this review, we summarize the potential roles of TMAO in inducing endothelial dysfunction and the mechanisms leading to the pathogenesis and progression of associated disease conditions. We also discuss the potential therapeutic strategies for the treatment of TMAO-induced endothelial dysfunction in cardio-metabolic diseases.
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Affiliation(s)
- Meyammai Shanmugham
- Science, Math & Technology, Singapore University of Technology & Design, 8 Somapah Road, Singapore 487372, Singapore
| | - Sophie Bellanger
- A*STAR Skin Research Labs, Agency for Science, Technology and Research, Singapore 138648, Singapore
| | - Chen Huei Leo
- Science, Math & Technology, Singapore University of Technology & Design, 8 Somapah Road, Singapore 487372, Singapore
- Correspondence: ; Tel.: +65-6434-8213
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Transcriptomic Differences Between Monozygotic Adolescent Twins Discordant For Metabolic Syndrome Following Weight Loss: A Case Study. Twin Res Hum Genet 2022; 25:196-201. [DOI: 10.1017/thg.2022.34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Abstract
This case reports peripheral blood mononuclear cell (PBMC) transcriptomic changes in a pair of male monozygotic pediatric twins with metabolic syndrome (MetS) undertaking assisted weight loss. These 14-year-old boys presented with similar baseline biochemistry and body composition. After a 16-week weight-loss intervention, percent body weight loss was similar (Twin A 12%, and Twin B 13%). MetS resolved in Twin A but Twin B maintained elevated triglycerides after weight loss. Analysis of the PBMC transcriptome before and after weight loss revealed very different changes in gene expression including differences in the direction of expression of genes related to immune cell activation. 48.7% of genes that were downregulated in Twin A were upregulated in Twin B. This case highlights a novel approach to report the influence of chronic low-grade inflammation and metabolic dysfunction on the PBMC transcriptome. It explores whether expression of genes related to immune functions may underlie the differences in response to weight loss or whether transcriptomic alterations in immune cells may precede more traditional biomarkers of chronic pro-inflammation. These monozygotic twins present an example of divergence of phenotypic outcomes despite identical genetic background and similar treatment response.
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Dioum EHM, Schneider KL, Vigerust DJ, Cox BD, Chu Y, Zachwieja JJ, Furman D. Oats Lower Age-Related Systemic Chronic Inflammation (iAge) in Adults at Risk for Cardiovascular Disease. Nutrients 2022; 14:nu14214471. [PMID: 36364734 PMCID: PMC9656573 DOI: 10.3390/nu14214471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/19/2022] [Accepted: 10/21/2022] [Indexed: 11/16/2022] Open
Abstract
Despite being largely preventable, cardiovascular disease (CVD) is still the leading cause of death globally. Recent studies suggest that the immune system, particularly a form of systemic chronic inflammation (SCI), is involved in the mechanisms leading to CVD; thus, targeting SCI may help prevent or delay the onset of CVD. In a recent placebo-controlled randomized clinical trial, an oat product providing 3 g of β-Glucan improved cholesterol low-density lipoprotein (LDL) levels and lowered cardiovascular risk in adults with borderline high cholesterol. Here, we conducted a secondary measurement of the serum samples to test whether the oat product has the potential to reduce SCI and improve other clinical outcomes related to healthy aging. We investigated the effects of the oat product on a novel metric for SCI called Inflammatory Age® (iAge®), derived from the Stanford 1000 Immunomes Project. The iAge® predicts multimorbidity, frailty, immune decline, premature cardiovascular aging, and all-cause mortality on a personalized level. A beneficial effect of the oat product was observed in subjects with elevated levels of iAge® at baseline (>49.6 iAge® years) as early as two weeks post-treatment. The rice control group did not show any significant change in iAge®. Interestingly, the effects of the oat product on iAge® were largely driven by a decrease in the Eotaxin-1 protein, an aging-related chemokine, independent of a person’s gender, body mass index, or chronological age. Thus, we describe a novel anti-SCI role for oats that could have a major impact on functional, preventative, and personalized medicine.
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Affiliation(s)
- El Hadji M Dioum
- Quaker Oats Center of Excellence, PepsiCo Health and Nutrition Sciences, Chicago, IL 60607, USA
| | | | | | - Bryan D Cox
- Edifice Health Inc., San Mateo, CA 94401, USA
| | - YiFang Chu
- Quaker Oats Center of Excellence, PepsiCo Health and Nutrition Sciences, Chicago, IL 60607, USA
| | - Jeffery J Zachwieja
- Quaker Oats Center of Excellence, PepsiCo Health and Nutrition Sciences, Chicago, IL 60607, USA
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Castro CA, Buzinari TC, Lino RLB, Araújo HSSD, Aníbal FDF, Verzola RMM, Bagnato VS, Inada NM, Rodrigues GJ. Profile of IL-6 and TNF in Foam Cell Formation: An Improved Method Using Fluorescein Isothiocyanate (FITC) Probe. Arq Bras Cardiol 2022; 119:533-541. [PMID: 35946754 PMCID: PMC9563877 DOI: 10.36660/abc.20210682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 03/09/2022] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The formation of foam cells occurs due to the increase in low-density plasma lipoprotein (LDL) and dysregulation of inflammation, which is important for the development of atherosclerosis. OBJECTIVE To evaluate the profile of tumor necrosis factor-alpha (TNF-α) and Interleukin-6 (IL-6) in the existing foam cell formation method, optimizing this protocol. METHODS The LDL was isolated, oxidized, and labeled with a Fluorescein isothiocyanate (FITC) probe. Foam cells were generated from THP-1 human monocyte-derived cells and incubated in the absence (control) or presence of FITC-ox-LDL (10, 50, 100, 150, or 200 μg/mL), for 12, 24, 48, or 72 hours. The accumulated FITC-ox-LDL in the cell was quantified by microscopy. The enzyme-linked immunosorbent assay was evaluated to quantify the IL-6 and TNF-α, with p < 0.05 considered significant. RESULTS All the FITC-ox-LDL concentrations tested showed a higher fluorescence when compared to the control, showing a greater accumulation of lipoprotein in cells. The higher the concentration of FITC-ox-LDL, the greater the production of TNF-α and IL-6. The production of IL-6 by foam cells was detected up to the value of 150 µg/mL of the maximum stimulus for LDL. Concentrations above 50 μg/mL LDL stimulated greater release of TNF-α compared to control. CONCLUSIONS Our model contributes to the understanding of the release of IL-6 and TNF-α in response to different concentrations of ox-LDL, using an optimized method for the formation of foam cells.
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Affiliation(s)
- Cynthia Aparecida Castro
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP - Brasil.,Departamento de Morfologia e Patologia - Universidade Federal de São Carlos, São Carlos, SP - Brasil
| | - Tereza Cristina Buzinari
- Departamento de Ciências Fisiológicas - Universidade Federal de São Carlos, São Carlos, SP - Brasil
| | | | | | | | | | | | - Natalia Mayumi Inada
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP - Brasil
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12
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Tian JJ, Levy M, Zhang X, Sinnott R, Maddela R. Counteracting Health Risks by Modulating Homeostatic Signaling. Pharmacol Res 2022; 182:106281. [PMID: 35661711 DOI: 10.1016/j.phrs.2022.106281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/14/2022] [Accepted: 05/27/2022] [Indexed: 10/18/2022]
Abstract
Homeostasis was initially conceptualized by Bernard and Cannon around a century ago as a steady state of physiological parameters that vary within a certain range, such as blood pH, body temperature, and heart rate1,2. The underlying mechanisms that maintain homeostasis are explained by negative feedbacks that are executed by the neuronal, endocrine, and immune systems. At the cellular level, homeostasis, such as that of redox and energy steady state, also exists and is regulated by various cell signaling pathways. The induction of homeostatic mechanism is critical for human to adapt to various disruptive insults (stressors); while on the other hand, adaptation occurs at the expense of other physiological processes and thus runs the risk of collateral damages, particularly under conditions of chronic stress. Conceivably, anti-stress protection can be achieved by stressor-mimicking medicinals that elicit adaptive responses prior to an insult and thereby serve as health risk countermeasures; and in situations where maladaptation may occur, downregulating medicinals could be used to suppress the responses and prevent subsequent pathogenesis. Both strategies are preemptive interventions particularly suited for individuals who carry certain lifestyle, environmental, or genetic risk factors. In this article, we will define and characterize a new modality of prophylactic intervention that forestalls diseases via modulating homeostatic signaling. Moreover, we will provide evidence from the literature that support this concept and distinguish it from other homeostasis-related interventions such as adaptogen, hormesis, and xenohormesis.
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Affiliation(s)
- Junqiang J Tian
- USANA Health Science, Inc., 3838 Parkway Blvd, Salt Lake City, UT 84121, USA.
| | - Mark Levy
- USANA Health Science, Inc., 3838 Parkway Blvd, Salt Lake City, UT 84121, USA
| | - Xuekai Zhang
- Beijing University of Chinese Medicine, No. 11, Bei San Huan Dong Lu, Chaoyang District, Beijing100029, China; US Center for Chinese Medicine, 14801 Physicians lane, 171 A 2nd Floor, #281, Rockville MD 20850, USA
| | - Robert Sinnott
- USANA Health Science, Inc., 3838 Parkway Blvd, Salt Lake City, UT 84121, USA
| | - Rolando Maddela
- USANA Health Science, Inc., 3838 Parkway Blvd, Salt Lake City, UT 84121, USA
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13
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Wang P, Yin B, Zhang Z, Mao S, Bao W, Lian W, Fan Y, Hong C, Su Y, Jia C. Foamy macrophages potentially inhibit tuberculous wound healing by inhibiting the TLRs/NF-κB signalling pathway. Wound Repair Regen 2022; 30:376-396. [PMID: 35384137 DOI: 10.1111/wrr.13006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 01/26/2022] [Accepted: 03/20/2022] [Indexed: 11/29/2022]
Abstract
To characterise the distribution, classification, and quantity of foamy macrophages (FMs) in tuberculous wound tissue and the relationship between FM and delayed healing of tuberculous wounds. Morphological studies were performed to explore the distribution of FM and Mycobacterium tuberculosis (Mtb) in tuberculous wounds, with acute and chronic wounds included for comparison. Phorbol-12-myristate-13-acetate stimulation-differentiated THP-1 cells were treated with Mtb to induce their differentiation into FM with oxidised low-density lipoprotein treatment serving as a control. Relative cytokine levels were determined by quantitative PCR and Western blotting. Varied co-culture combinations of Mtb, THP-1, FM, and fibroblasts were performed, and proliferation, migration, ability to contract collagen gel, and protein levels of the chemokines in the supernatants of the fibroblasts were assessed. The differentially expressed genes in human skin fibroblasts (HSFs) after co-culture with or without FM were identified using microarray. Many FM were found in the tissues of tuberculous wounds. The FM that did not engulf Mtb (NM-FM) were mainly distributed in tissues surrounding tuberculous wounds, whereas the FM that engulfed Mtb (M-FM) were dominantly located within granulomatous tissues. Co-culture experiments showed that, with the Mtb co-culture, the portions of NM-FM in the total FM grew over time. The migration, proliferation, chemokine secretion, and the ability of fibroblasts to contract collagen gel were inhibited when co-cultured with Mtb, FM, or a combination of the two. Further investigation showed that the TLRs/NF-κB signalling pathway is involved in fibroblast function under the stimulation of FM. TLRs and NF-κB agonists could reverse the phenotypic changes in HSFs after co-culture with FM. The tuberculous wound microenvironment composed of Mtb and FM may affect wound healing by inhibiting the functions of fibroblasts. FM potentially inhibit fibroblasts' function by inhibiting the TLRs/NF-κB signalling pathway in tuberculous wounds.
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Affiliation(s)
- Peng Wang
- Department of Burns and Plastic & Wound Repair Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Bin Yin
- Department of Burns and Plastic & Wound Repair Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Zexin Zhang
- Department of Burns and Plastic & Wound Repair Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Shuting Mao
- Department of Burns and Plastic & Wound Repair Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Wu Bao
- Department of Burns and Plastic & Wound Repair Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Wenqin Lian
- Department of Burns and Plastic & Wound Repair Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Yueying Fan
- Department of Burns and Plastic & Wound Repair Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Chao Hong
- Xiamen Center for Disease Control and Prevention, Xiamen, China
| | - Yingjun Su
- Department of Burns and Plastic Surgery, Plastic Surgery Hospital of Xi'an International Medical Center, Xi'an, China
| | - Chiyu Jia
- Department of Burns and Plastic & Wound Repair Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
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14
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Kang H, Yu H, Fan J, Cao G. Rotigotine protects against oxidized low-density lipoprotein(ox-LDL)-induced damages in human umbilical vein endothelial cells(HUVECs). Bioengineered 2021; 12:10568-10579. [PMID: 34860135 PMCID: PMC8810014 DOI: 10.1080/21655979.2021.2000224] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Rotigotine is a non-ergoline dopamine agonist that has been licensed for the treatment of Parkinson’s disease. Cardiovascular diseases are the world’s leading cause of death. Ox-LDL- induced endothelial damages are involved in the initiation and progression of cardiovascular diseases. In this study, we assessed the beneficial properties of Rotigotine on ox-LDL-induced insults to HUVECs to highlight its potential use in the treatment of cardiovascular diseases. Our findings show that Rotigotine suppresses the expressions of low-density lipoprotein receptor (LDL-R), proprotein convertase subtilisin/kexin type 9 (PCSK-9), and sterol regulatory element-binding protein (SREBP-2). It also inhibits ox-LDL-induced cholesterol accumulation in endothelial cells (ECs), improves U937 monocytes adhesion, and decreases the representation of NADPH oxidase (NOX-4) and generation of reactive oxygen species (ROS) in endothelial cells (ECs). Furthermore, Rotigotine inhibited the expressions of both vascular cellular adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) in HUVECs and had anti-inflammatory efficacy in ox-LDL-induced cells by inhibiting the expressions of pro-inflammatory cytokines. Notably, Rotigotine inhibits the activation of nuclear factor-kappaB (NF-κB) by preventing nuclear translocation of NF-κB p65 and reducing the luciferase activity of NF-κB reporter. We, therefore, conclude that these effects of Rotigotine on HUVECs suggest that it may play a therapeutic role in cardiovascular diseases.
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Affiliation(s)
- Hui Kang
- Department of Cardiovascular Surgery, West China Hospital of Sichuan University, Chengdu, China
| | - Hui Yu
- Department of Cardiovascular Surgery, West China Hospital of Sichuan University, Chengdu, China
| | - Jingxiu Fan
- Department of Cardiovascular Surgery, West China Hospital of Sichuan University, Chengdu, China
| | - Ge Cao
- Department of Cardiovascular Surgery, West China Hospital of Sichuan University, Chengdu, China
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15
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Feng J, Jiang W, Cheng X, Zou B, Varley AW, Liu T, Qian G, Zeng W, Tang J, Zhao Q, Chu Y, Wei Y, Li X, Munford RS, Lu M. A host lipase prevents lipopolysaccharide-induced foam cell formation. iScience 2021; 24:103004. [PMID: 34522852 PMCID: PMC8426562 DOI: 10.1016/j.isci.2021.103004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/14/2021] [Accepted: 08/15/2021] [Indexed: 01/04/2023] Open
Abstract
Although microbe-associated molecular pattern (MAMP) molecules can promote cholesterol accumulation in macrophages, the existence of a host-derived MAMP inactivation mechanism that prevents foam cell formation has not been described. Here, we tested the ability of acyloxyacyl hydrolase (AOAH), the host lipase that inactivates gram-negative bacterial lipopolysaccharides (LPSs), to prevent foam cell formation in mice. Following exposure to small intraperitoneal dose(s) of LPSs, Aoah -/- macrophages produced more low-density lipoprotein receptor and less apolipoprotein E and accumulated more cholesterol than did Aoah +/+ macrophages. The Aoah -/- macrophages also maintained several pro-inflammatory features. Using a perivascular collar placement model, we found that Aoah -/- mice developed more carotid artery foam cells than did Aoah +/+ mice after they had been fed a high fat, high cholesterol diet, and received small doses of LPSs. This is the first demonstration that an enzyme that inactivates a stimulatory MAMP in vivo can reduce cholesterol accumulation and inflammation in arterial macrophages.
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Affiliation(s)
- Jintao Feng
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE, NHC, CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Wei Jiang
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE, NHC, CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
- Department of Trauma-Emergency & Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai 200040, China
| | - Xiaofang Cheng
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE, NHC, CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Benkun Zou
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE, NHC, CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Alan W. Varley
- Department of Internal Medicine, UT-Southwestern Medical Center at Dallas, Texas 75390, USA
| | - Ting Liu
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE, NHC, CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Guojun Qian
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE, NHC, CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Wenjiao Zeng
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Jianguo Tang
- Department of Trauma-Emergency & Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai 200040, China
| | - Qiang Zhao
- Department of Cardiac Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200020, China
| | - Yiwei Chu
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE, NHC, CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Yuanyuan Wei
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE, NHC, CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Xiaobo Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Robert S. Munford
- Antibacterial Host Defense Unit, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD 20892, USA
| | - Mingfang Lu
- Department of Immunology, Key Laboratory of Medical Molecular Virology (MOE, NHC, CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
- Department of Trauma-Emergency & Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai 200040, China
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16
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Badimon L, Vilahur G, Rocca B, Patrono C. The key contribution of platelet and vascular arachidonic acid metabolism to the pathophysiology of atherothrombosis. Cardiovasc Res 2021; 117:2001-2015. [PMID: 33484117 DOI: 10.1093/cvr/cvab003] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 11/17/2020] [Accepted: 01/08/2021] [Indexed: 02/06/2023] Open
Abstract
Arachidonic acid is one of the most abundant and ubiquitous ω-6 polyunsaturated fatty acid, present in esterified form in the membrane phospholipids of all mammalian cells and released from phospholipids by several phospholipases in response to various activating or inhibitory stimuli. Arachidonic acid is the precursor of a large number of enzymatically and non-enzymatically derived, biologically active autacoids, including prostaglandins (PGs), thromboxane (TX) A2, leukotrienes, and epoxyeicosatetraenoic acids (collectively called eicosanoids), endocannabinoids and isoprostanes, respectively. Eicosanoids are local modulators of the physiological functions and pathophysiological roles of blood vessels and platelets. For example, the importance of cyclooxygenase (COX)-1-derived TXA2 from activated platelets in contributing to primary haemostasis and atherothrombosis is demonstrated in animal and human models by the bleeding complications and cardioprotective effects associated with low-dose aspirin, a selective inhibitor of platelet COX-1. The relevance of vascular COX-2-derived prostacyclin (PGI2) in endothelial thromboresistance and atheroprotection is clearly shown by animal and human models and by the adverse cardiovascular effects exerted by COX-2 inhibitors in humans. A vast array of arachidonic acid-transforming enzymes, downstream synthases and isomerases, transmembrane receptors, and specificity in their tissue expression make arachidonic acid metabolism a fine-tuning system of vascular health and disease. Its pharmacological regulation is central in human cardiovascular diseases, as demonstrated by biochemical measurements and intervention trials.
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Affiliation(s)
- Lina Badimon
- Cardiovascular Program-ICCC, Research Institute-Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Barcelona, Spain; CIBERCV, Instituto Salud Carlos III, Madrid, Spain.,Cardiovascular Research Chair Autonomous University of Barcelona (UAB), Barcelona, Spain
| | - Gemma Vilahur
- Cardiovascular Program-ICCC, Research Institute-Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Barcelona, Spain; CIBERCV, Instituto Salud Carlos III, Madrid, Spain
| | - Bianca Rocca
- Department of Bioethics and Safety, Section of Pharmacology, Catholic University School of Medicine, Rome, Italy.,Gemelli' Foundation, IRCCS, Rome, Italy
| | - Carlo Patrono
- Department of Bioethics and Safety, Section of Pharmacology, Catholic University School of Medicine, Rome, Italy.,Gemelli' Foundation, IRCCS, Rome, Italy
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17
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Karten A, Vernice NA, Renna HA, Carsons SE, DeLeon J, Pinkhasov A, Gomolin IH, Glass DS, Reiss AB, Kasselman LJ. Effect of oxytocin on lipid accumulation under inflammatory conditions in human macrophages. Exp Mol Pathol 2021; 118:104604. [PMID: 33434610 DOI: 10.1016/j.yexmp.2021.104604] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 12/21/2020] [Accepted: 01/07/2021] [Indexed: 11/27/2022]
Abstract
INTRODUCTION AND AIMS Oxytocin (OT) is a neuropeptide hormone secreted by the posterior pituitary gland. Deficits in OT action have been observed in patients with behavioral and mood disorders, some of which correlate with an increased risk of cardiovascular disease (CVD). Recent research has revealed a wider systemic role that OT plays in inflammatory modulation and development of atherosclerotic plaques. This study investigated the role that OT plays in cholesterol transport and foam cell formation in LPS-stimulated THP-1 human macrophages. METHODS THP-1 differentiated macrophages were treated with media, LPS (100 ng/ml), LPS + OT (10 pM), or LPS + OT (100 pM). Changes in gene expression and protein levels of cholesterol transporters were analyzed by real time quantitative PCR (RT-qPCR) and Western blot, while oxLDL uptake and cholesterol efflux capacity were evaluated with fluorometric assays. RESULTS RT-qPCR analysis revealed a significant increase in ABCG1 gene expression upon OT + LPS treatment, compared to LPS alone (p = 0.0081), with Western blotting supporting the increase in expression of the ABCG1 protein. Analysis of oxLDL uptake showed a significantly lower fluorescent value in LPS + OT (100pM) -treated cells when compared to LPS alone (p < 0.0001). While not statistically significant (p = 0.06), cholesterol efflux capacity increased with LPS + OT treatment. CONCLUSION We demonstrate here that OT can attenuate LPS-mediated lipid accumulation in THP-1 macrophages. These findings support the hypothesis that OT could be used to reduce pro-inflammatory and potentially atherogenic changes observed in patients with heightened CVD risk. This study suggests further exploration of OT effects on monocyte and macrophage cholesterol handling in vivo.
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Affiliation(s)
- Ariel Karten
- NYU Langone Hospital - Long Island Biomedical Research Institute and NYU Long Island School of Medicine, Mineola, New York, United States of America
| | - Nicholas A Vernice
- NYU Langone Hospital - Long Island Biomedical Research Institute and NYU Long Island School of Medicine, Mineola, New York, United States of America
| | - Heather A Renna
- NYU Langone Hospital - Long Island Biomedical Research Institute and NYU Long Island School of Medicine, Mineola, New York, United States of America
| | - Steven E Carsons
- NYU Langone Hospital - Long Island Biomedical Research Institute and NYU Long Island School of Medicine, Mineola, New York, United States of America
| | - Joshua DeLeon
- NYU Langone Hospital - Long Island Biomedical Research Institute and NYU Long Island School of Medicine, Mineola, New York, United States of America
| | - Aaron Pinkhasov
- NYU Langone Hospital - Long Island Biomedical Research Institute and NYU Long Island School of Medicine, Mineola, New York, United States of America
| | - Irving H Gomolin
- NYU Langone Hospital - Long Island Biomedical Research Institute and NYU Long Island School of Medicine, Mineola, New York, United States of America
| | - Daniel S Glass
- NYU Langone Hospital - Long Island Biomedical Research Institute and NYU Long Island School of Medicine, Mineola, New York, United States of America
| | - Allison B Reiss
- NYU Langone Hospital - Long Island Biomedical Research Institute and NYU Long Island School of Medicine, Mineola, New York, United States of America
| | - Lora J Kasselman
- NYU Langone Hospital - Long Island Biomedical Research Institute and NYU Long Island School of Medicine, Mineola, New York, United States of America.
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18
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Implications for MicroRNA involvement in the prognosis and treatment of atherosclerosis. Mol Cell Biochem 2021; 476:1327-1336. [PMID: 33389489 DOI: 10.1007/s11010-020-03992-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 11/16/2020] [Indexed: 12/30/2022]
Abstract
MicroRNAs (miRNAs) are important molecules which implicated in various processes, such as differentiation, development, cell survival, cell apoptosis and also cell metabolism. Investigations over decades have revealed that various genes and signaling pathways are implicated in beginning and development of atherosclerosis, several miRNAs being involved in these dysregulated genes and pathways. miRNAs have provided new molecular vision in the context of atherosclerosis. miRNAs are considered as important regulators of cellular migration, differentiation, proliferation, lipid uptake and efflux, as well as cytokine production. Application of miRNAs as a biomarker in diagnosis, prognosis and even therapy is quiet exciting. Although animal researches showed promising results, still some practical difficulties and technical challenges need to be addressed before translation from researches into clinical practices. In this review, we present important data about three critical cells endothelial cell (EC), vascular smooth muscle cell (VSMC), and monocyte/macrophage and regulation of these cells through miRNAs. Furthermore, we discuss about the potential of miRNAs as a prognostic and diagnostic biomarkers, therapeutic opportunities and challenges, and also future perspective.
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19
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Jiang S, Chen Z, Lai W, Mai Q, Chen D, Sun S, Zhang Y. Decoction of Heat-Clearing, Detoxifying and Blood Stasis Removing Relieves Acute Soft Tissue Injury via Modulating MiR-26b-5p/COX2 Axis to Inhibit Inflammation. Biosci Rep 2020; 40:BSR20201981. [PMID: 33270831 PMCID: PMC7753743 DOI: 10.1042/bsr20201981] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 12/01/2020] [Accepted: 12/01/2020] [Indexed: 11/30/2022] Open
Abstract
Traditional Chinese medicine (TCM), such as Huanglian-Jie-Du-Tang, a heat-clearing and detoxifying decoction is beneficial to alleviation of inflammation-related diseases. The objective of this study is to uncover the effect and mechanism of heat-clearing, detoxifying and blood stasis removing decoction (HDBD) on the treatment of acute soft tissue injury (STI) which is characterized with excessive inflammatory cascade at the onset. Male Sprague-Dawley (SD) rats with hammer beating served as the in vivo models of acute STI. Haematoxylin-eosin (HE) staining was used for histopathology assessment. The levels of inflammatory factors, including prostaglandin E2 (PGE2), tumor necrosis factor-αumTNF-α), interleukin (IL)-1t and IL-6 were measured by enzyme linked immunosorbent assay (ELISA). Human dermal microvascular endothelium cell line HMEC-1 and rat vascular endothelium cell line RAOEC were used to explore the mechanism in vitro. Luciferase gene reporter assay was applied to determine the relationship between miR-26b-5p and COX2. The results showed that HDBD intervention significantly reduced the temperature difference between the healthy side and affected side of rats with hammer beating, together with the decreased levels of COX2, PGE2, TNF-α, IL-6 and IL-1β, and the increased level of miR-26b-5p. In mechanism, miR-26b-5p targeted COX2 and decreased its expression, leading to significant decreases in the levels of PGE2, TNF-α and IL-6 in RAOEC and HMEC-1 cells. In addition, miR-26b-5p inhibition impaired the effects of HDBD on the suppression of PGE2, TNF-α, IL-6 and IL-1β in vitro. In conclusion, this study revealed that HDBD relieved acute STI via modulating miR-26b-5p/COX2 axis to inhibit inflammation.
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Affiliation(s)
- Shunwan Jiang
- Department of Orthopedics, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen 518033, China
| | - Zhi Chen
- Department of Orthopedics, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen 518033, China
| | - Wenqiang Lai
- Department of Orthopedics, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen 518033, China
| | - Qingchun Mai
- Department of Orthopedics, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen 518033, China
| | - Dayu Chen
- Department of Orthopedics, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen 518033, China
| | - Shufen Sun
- Department of Orthopedics, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen 518033, China
| | - Yong Zhang
- Department of Orthopedics, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen 518033, China
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20
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Bloch M, John M, Smith D, Rasmussen TA, Wright E. Managing HIV-associated inflammation and ageing in the era of modern ART. HIV Med 2020; 21 Suppl 3:2-16. [PMID: 33022087 DOI: 10.1111/hiv.12952] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/22/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVES This paper aims to address the concerns around ongoing immune activation, inflammation, and resistance in those ageing with HIV that represent current challenges for clinicians. METHODS Presentations at a symposium addressing issues of ageing with HIV infection were reviewed and synthesised. RESULTS The changing natural history and demographics of human immunodeficiency virus (HIV)-infected individuals means new challenges in contemporary management. In the early years of the epidemic,management was focussed on acute, potentially life-threatening AIDS-related complications. From initial monotherapy with first-generation antiretroviral therapy (ART), the development of combination highly active ART (HAART) allowed HIV control but ART toxicities, treatment adherence and drug resistance emerged as major issues. Today, the availability of potent and tolerable ART has made viral suppression achievable in most people living with HIV (PLHIV), and clinicians are confronted with managing a chronic condition among an ageing population. The combination of diseases of ageing and the co-morbidities associated with HIV-infection, even when well controlled, results in a complex set of challenges for many older PLHIV. There is a growing appreciation that many non-AIDS-related co-morbidities are caused, at least in part, by persistent, low-grade immune activation, inflammation, and hypercoagulability, despite suppressive ART. CONCLUSIONS In order to further improve HIV management, it is important to understand the enduring effects of chronically suppressed HIV infection, the potential contribution of these factors to the ageing process, the possibility of drug resistance, and the impact of different treatment strategies, including early ART initiation.
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Affiliation(s)
- M Bloch
- Holdsworth House Medical Practice, Sydney, NSW, Australia.,Kirby Institute, University of New South Wales, Sydney, NSW, Australia
| | - M John
- Kirby Institute, University of New South Wales, Sydney, NSW, Australia.,Royal Perth Hospital, Perth, WA, Australia.,Institute of Immunology and Infectious Disease, Perth, WA, Australia
| | - D Smith
- School of Public Health and Community Medicine, University of New South Wales, Sydney, NSW, Australia.,The Albion Centre, Sydney, NSW, Australia
| | - T A Rasmussen
- Doherty Institute for Infection and Immunity, Melbourne, Vic., Australia.,University of Melbourne, Melbourne, Vic., Australia
| | - E Wright
- The Alfred Hospital, Melbourne, Vic., Australia.,Centre for Inflammatory Diseases, Monash University, Melbourne, Vic., Australia.,The Burnett Institute, Melbourne, Vic., Australia
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21
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Insights into pharmacological mechanisms of polydatin in targeting risk factors-mediated atherosclerosis. Life Sci 2020; 254:117756. [DOI: 10.1016/j.lfs.2020.117756] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 04/30/2020] [Accepted: 05/04/2020] [Indexed: 12/20/2022]
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22
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Shiotsugu S, Okinaga T, Habu M, Yoshiga D, Yoshioka I, Nishihara T, Ariyoshi W. The Biological Effects of Interleukin-17A on Adhesion Molecules Expression and Foam Cell Formation in Atherosclerotic Lesions. J Interferon Cytokine Res 2019; 39:694-702. [DOI: 10.1089/jir.2019.0034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Shohei Shiotsugu
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
- Division of Oral Medicine, Department of Science and Physical Functions, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | | | - Manabu Habu
- Division of Oral and Maxillofacial Surgery, Department of Science and Physical Functions, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Daigo Yoshiga
- Division of Oral Medicine, Department of Science and Physical Functions, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Izumi Yoshioka
- Division of Oral Medicine, Department of Science and Physical Functions, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Tatsuji Nishihara
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Wataru Ariyoshi
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
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23
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FNDC5 inhibits foam cell formation and monocyte adhesion in vascular smooth muscle cells via suppressing NFκB-mediated NLRP3 upregulation. Vascul Pharmacol 2019; 121:106579. [DOI: 10.1016/j.vph.2019.106579] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 07/12/2019] [Accepted: 07/13/2019] [Indexed: 12/21/2022]
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24
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Jaworowski A, Hearps AC, Angelovich TA, Hoy JF. How Monocytes Contribute to Increased Risk of Atherosclerosis in Virologically-Suppressed HIV-Positive Individuals Receiving Combination Antiretroviral Therapy. Front Immunol 2019; 10:1378. [PMID: 31275317 PMCID: PMC6593090 DOI: 10.3389/fimmu.2019.01378] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 05/31/2019] [Indexed: 12/27/2022] Open
Abstract
Combination antiretroviral therapy (ART) is effective at suppressing HIV viremia to achieve persistently undetectable levels in peripheral blood in the majority of individuals with access and ability to maintain adherence to treatment. However, evidence suggests that ART is less effective at eliminating HIV-associated inflammation and innate immune activation. To the extent that residual inflammation and immune activation persist, virologically suppressed people living with HIV (PLWH) may have increased risk of inflammatory co-morbidities, and adjunctive therapies may need to be considered to reduce HIV-related inflammation and fully restore the health of virologically suppressed HIV+ individuals. Cardiovascular disease (CVD) is the single leading cause of death in the developed world and is becoming more important in PLWH with access to ART. Arterial disease due to atherosclerosis, leading to acute myocardial infarction (AMI) and stroke, is a major component of CVD. Atherosclerosis is an inflammatory disease, and epidemiological comparisons of atherosclerosis and AMI show a higher prevalence and suggest a greater risk in PLWH compared to the general population. The reasons for greater prevalence of CVD in PLWH can be broadly grouped into four categories: (a) the higher prevalence of traditional risk factors e.g., smoking and hypertension (b) dyslipidemia (also a traditional risk factor) caused by off-target effects of ART drugs (c) HIV-related inflammation and immune activation and (d) other undefined HIV-related factors. Management strategies aimed at reducing the impact of traditional risk factors in PLWH are similar to those for the general population and their effectiveness is currently being evaluated. Together with improvements in ART regimens and guidelines for treatment, and a greater awareness of its impact on CVD, the HIV-related risk of AMI and stroke is decreasing but remains elevated compared to the general community. Monocytes are key effector cells which initiate the formation of atherosclerotic plaques by migrating into the intima of coronary arteries and accumulating as foam cells full of lipid droplets. This review considers the specific role of monocytes as effector cells in atherosclerosis which progresses to AMI and stroke, and explores mechanisms by which HIV may promote an atherogenic phenotype and function independent of traditional risk factors. Altered monocyte function may represent a distinct HIV-related factor which increases risk of CVD in PLWH.
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Affiliation(s)
- Anthony Jaworowski
- School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC, Australia.,Department of Infectious Diseases, Alfred Hospital and Monash University, Melbourne, VIC, Australia.,Life Sciences Discipline, Burnet Institute, Melbourne, VIC, Australia
| | - Anna C Hearps
- Department of Infectious Diseases, Alfred Hospital and Monash University, Melbourne, VIC, Australia.,Life Sciences Discipline, Burnet Institute, Melbourne, VIC, Australia
| | - Thomas A Angelovich
- School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC, Australia.,Life Sciences Discipline, Burnet Institute, Melbourne, VIC, Australia
| | - Jennifer F Hoy
- Department of Infectious Diseases, Alfred Hospital and Monash University, Melbourne, VIC, Australia
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Ginkgolide B Mediated Alleviation of Inflammatory Cascades and Altered Lipid Metabolism in HUVECs via Targeting PCSK-9 Expression and Functionality. BIOMED RESEARCH INTERNATIONAL 2019; 2019:7284767. [PMID: 31281844 PMCID: PMC6590504 DOI: 10.1155/2019/7284767] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 05/13/2019] [Accepted: 05/26/2019] [Indexed: 01/06/2023]
Abstract
The potential of oxidized-LDL (Ox-LDL) to elicit inflammatory responses in macrophages leading to the atherosclerosis (AS) progression is well known. Since proprotein convertase subtilisin/Kexin-9 (PCSK-9), the posttranslational regulator of LDL-receptor, is associated with elevated LDL in the circulation, the present report was aimed to uncover the ameliorative effects of Ginkgolide B, a terpenic lactone from Ginkgo biloba, against Ox-LDL-induced alterations in cholesterol metabolism in HUVECs. Consequently, our results demonstrated that incubation with Ox-LDL significantly upregulated the PCSK-9 expression in HUVECs, which was significantly downregulated, both at mRNA and protein level, after Ginkgolide B treatment via subsequent suppression of sterol element binding protein (SREBP-2) expression. Moreover, Ginkgolide B-mediated inhibition of PCSK-9 activity was also validated by in silico methods which revealed that it interferes the PSCK-9 interaction with LDL-receptor (LDL-R). Interestingly, Ox-LDL-induced LDL-R expression was further enhanced by Ginkgolide B treatment in HUVECs. Moreover, Ginkgolide B treatment lead to downregulation of lectin-like Ox-LDL receptor (LOX-1) and NADPH oxidase (NOX-4) expression which was upregulated in Ox-LDL-treated HUVECs, along with the attenuation of mitochondrial ROS generation. Furthermore, Ginkgolide B significantly inhibited the augmented expression of intercellular adhesion molecule-1 (ICAM-1) and vascular adhesion molecule-1 (VCAM-1) in Ox-LDL-activated HUVECs. Ginkgolide B also significantly ameliorated the inflammatory response in Ox-LDL-activated HUVECs by suppressing the expression of IL-1α, IL-1β, IL-6, CXCL-1, CXCL-2, and monocyte chemotactic protein (MCP-1), at mRNA and protein level. Our in vitro and in silico study established that Ginkgolide B alleviated the Ox-LDL-induced inflammatory cascades and altered lipid metabolism in HUVECs by suppressing the PCSK-9 and, thus, could be established as a treasured alternative therapeutic candidate in the atherosclerosis management.
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Arterial Hypertension and Interleukins: Potential Therapeutic Target or Future Diagnostic Marker? Int J Hypertens 2019; 2019:3159283. [PMID: 31186952 PMCID: PMC6521461 DOI: 10.1155/2019/3159283] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 03/26/2019] [Indexed: 02/06/2023] Open
Abstract
Hypertension as a multifactorial pathology is one of the most important cardiovascular risk factors, affecting up to 30-40% of the general population. Complex immune responses are involved in the inflammatory mechanism of hypertension, with evidence pointing to increased inflammatory mediators even in prehypertensive patients. Increased vascular permeability, thrombogenesis, and fibrosis, effects that are associated with sustained hypertension, could be attributed to chronic inflammation. Chronic inflammation triggers endothelial dysfunction via increased production of ROS through proinflammatory cytokines. Increased serum level of proinflammatory cytokines such as IL-1β, IL-6, IL-8, IL-17, IL-23, TGFβ, and TNFα in hypertensive patients has been associated with either increased blood pressure values and/or end-organ damage. Moreover, some cytokines (i.e., IL-6) seem to determine a hypertensive response to angiotensin II, regardless of blood pressure values. Understanding hypertension as an inflammatory-based pathology gives way to new therapeutic targets. As such, conventional cardiovascular drugs (statins, calcium channels blockers, and ACEIs/ARBs) have shown additional anti-inflammatory effects that could be linked to their blood pressure lowering properties. Moreover, anti-inflammatory drugs (mycophenolate mofetil) have been shown to decrease blood pressure in hypertensive patients or prevent its development in normotensive individuals. Further research is needed to evaluate whether drugs targeting hypertensive-linked proinflammatory cytokines, such as monoclonal antibodies, could become a new therapeutic option in treating arterial hypertension.
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27
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Chansiw N, Chotinantakul K, Srichairatanakool S. Anti-inflammatory and Antioxidant Activities of the Extracts from Leaves and Stems of Polygonum odoratum Lour. Antiinflamm Antiallergy Agents Med Chem 2018; 18:45-54. [PMID: 30411695 PMCID: PMC6446461 DOI: 10.2174/1871523017666181109144548] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 10/17/2018] [Accepted: 11/06/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Polygonum odoratum is an indigenous vegetable that has been used as a favoring agent and also used as a Thai traditional medicine to treat flatulence. OBJECTIVE To analyze active ingredients, total phenolic and total flavonoid contents, antiinflammatory and antioxidant activities from leaf and stem extracts of P. odoratum. METHODS Leaves and stems were dried and extracted by using methanol, dichloromethane and water for obtaining Methanolic Leaf Extract (MLE), Methanolic Stem Extract (MTE), Dichloromethane Leaf Extract (DLE), Dichloromethane Stem Extract (DTE), Water Leaf Extract (WLE) and Water Stem Extract (WTE). The extracts were quantified for total phenolic and total flavonoid contents by spectrophotometry and active compounds were analyzed by using GC-MS. Antioxidant activity was determined by ABTS and DPPH radicals scavenging assays. Anti-inflammatory activity was tested by the inhibition of nitric oxide production in RAW 264.7 macrophage cells induced by lipopolysaccharide. RESULTS The DLE exhibited the most potent anti-inflammatory effect by inhibiting nitric oxide production in a concentration-dependent manner (IC50 = 53.75±0.72 µg/mL). MLE exhibited strong antioxidant activity and contained the highest concentration of phenolic compounds (52.59±0.58 mg gallic acid equivalent/g extract) and flavonoid (19.97+0.11 mg quercetin equivalent/g extract). E-15-Heptadecenal and 3, 7, 11, 15-tetramethyl-2- hexadecen-1-ol were found predominantly in the methanol extracts. CONCLUSION The leaf extract of P. odoratum showed potent anti-inflammatory and antioxidant activities, mediated by DLE and MLE, respectively.
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Affiliation(s)
- Nittaya Chansiw
- School of Medicine, Mae Fah Luang University, Chiang Rai-57100, Thailand
| | | | - Somdet Srichairatanakool
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai-50200, Thailand
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Hoogeveen RM, Nahrendorf M, Riksen NP, Netea MG, de Winther MPJ, Lutgens E, Nordestgaard BG, Neidhart M, Stroes ESG, Catapano AL, Bekkering S. Monocyte and haematopoietic progenitor reprogramming as common mechanism underlying chronic inflammatory and cardiovascular diseases. Eur Heart J 2018; 39:3521-3527. [PMID: 29069365 PMCID: PMC6174026 DOI: 10.1093/eurheartj/ehx581] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 09/11/2017] [Accepted: 10/12/2017] [Indexed: 12/19/2022] Open
Abstract
A large number of cardiovascular events are not prevented by current therapeutic regimens. In search for additional, innovative strategies, immune cells have been recognized as key players contributing to atherosclerotic plaque progression and destabilization. Particularly the role of innate immune cells is of major interest, following the recent paradigm shift that innate immunity, long considered to be incapable of learning, does exhibit immunological memory mediated via epigenetic reprogramming. Compelling evidence shows that atherosclerotic risk factors promote immune cell migration by pre-activation of circulating innate immune cells. Innate immune cell activation via metabolic and epigenetic reprogramming perpetuates a systemic low-grade inflammatory state in cardiovascular disease (CVD) that is also common in other chronic inflammatory disorders. This opens a new therapeutic area in which metabolic or epigenetic modulation of innate immune cells may result in decreased systemic chronic inflammation, alleviating CVD, and its co-morbidities.
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Affiliation(s)
- Renate M Hoogeveen
- Department of Vascular Medicine, Academic Medical Centre, Meibergdreef 9, Amsterdam, The Netherlands
| | - Matthias Nahrendorf
- Center for Systems Biology and Department of Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, 55 Fruit Street Boston, MA, USA
| | - Niels P Riksen
- Department of Internal Medicine, Radboud University Medical Center, Geert Grooteplein Zuid 8, Nijmegen, The Netherlands
| | - Mihai G Netea
- Department of Internal Medicine, Radboud University Medical Center, Geert Grooteplein Zuid 8, Nijmegen, The Netherlands
| | - Menno P J de Winther
- Department of Medical Biochemistry, Academic Medical Centre, Meibergdreef 9, Amsterdam, The Netherlands
| | - Esther Lutgens
- Institute for Cardiovascular Prevention (IPEK), Ludwig Maximilians University (LMU), Pettenkoferstraße 9, Munich, Germany
| | - Børge G Nordestgaard
- The Copenhagen General Population Study and Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Ringvej 75, Herlev, Copenhagen, Denmark
| | - Michel Neidhart
- Center of Experimental Rheumatology, University Hospital Zurich, Schlieren, Switzerland
| | - Erik S G Stroes
- Department of Vascular Medicine, Academic Medical Centre, Meibergdreef 9, Amsterdam, The Netherlands
| | - Alberico L Catapano
- Department of Pharmacological and Biomolecular Sciences, University of Milan and IRCCS Multimedica, Via Balzaretti, Milano, Italy
| | - Siroon Bekkering
- Department of Vascular Medicine, Academic Medical Centre, Meibergdreef 9, Amsterdam, The Netherlands
- Department of Internal Medicine, Radboud University Medical Center, Geert Grooteplein Zuid 8, Nijmegen, The Netherlands
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29
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Feng Z, Yang X, Zhang L, Ansari IA, Khan MS, Han S, Feng Y. Ginkgolide B ameliorates oxidized low-density lipoprotein-induced endothelial dysfunction via modulating Lectin-like ox-LDL-receptor-1 and NADPH oxidase 4 expression and inflammatory cascades. Phytother Res 2018; 32:2417-2427. [PMID: 30136446 DOI: 10.1002/ptr.6177] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 07/19/2018] [Accepted: 07/21/2018] [Indexed: 01/13/2023]
Abstract
The current study was undertaken to delineate the protective effect of Ginkgolide B, a phyto-constituent from Ginkgo biloba, on oxidized (ox)-LDL-induced endothelial dysfunction via targeting Lectin-like ox-LDL-receptor-1 (LOX-1), NADPH oxidase 4 (NOX-4), and other inflammatory proteins. Our results have shown that Ginkgolide B downregulated the expression of LOX-1 in ox-LDL-treated human umbilical vein endothelial cells (HUVECs) and RAW246.7 murine macrophages which ultimately resulted in decreased cholesterol deposits in HUVECs and RAW264.7. Moreover, Ginkgolide B suppressed the enhanced NOX4 expression, which was associated with attenuation of ROS generation in ox-LDL-stimulated HUVECs and RAW264.7 cells. Ginkgolide B also ameliorated the endothelial dysfunction by inhibiting the augmented expression of monocyte chemotactic protein-1 (MCP-1), intercellular adhesion molecule-1 (ICAM-1), and vascular cell adhesion molecule-1 (VCAM-1) in ox-LDL-activated HUVECs. Furthermore, the enhanced expression of many inflammatory cytokines in ox-LDL-induced RAW264.7 macrophages, both at transcription and protein level, was significantly down-regulated after Ginkgolide B treatment. Ginkgolide B also illustrated atheroprotective property via suppressing the augmented expression of matrix metalloproteinase-1 and cyclooxygenase-2 in ox-LDL-stimulated RAW264.7 macrophages. In summary, our study has established that Ginkgolide B ameliorates endothelial dysfunction via targeting LOX-1, NOX-4, MCP-1, ICAM-1, and VCAM-1 along with the markers associated with inflammatory cascades and thus could be promoted as a valuable therapeutic agent in prevention and management of atherosclerosis.
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Affiliation(s)
- Zhanbin Feng
- Department of Cardiovascular Medicine, Ninth Hospital of Xi'an, Xi'an, Shaanxi, 710054, China
| | - Xiaofei Yang
- Department of Cardiovascular Medicine, Shaanxi Second Provincal People's Hospital, Xi'an, Shaanxi, 710054, China
| | - Long Zhang
- Department of cardiology, Xidian Group Hospital, Xi'an, Shaanxi, 710054, China
| | - Irfan A Ansari
- Department of Bioscience, Integral University, Lucknow, India
| | - M Salman Khan
- Department of Bioscience, Integral University, Lucknow, India
| | - Shuyi Han
- Medical Research and Laboratory Diagnostic Center, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong, 250013, China
| | - Yaoyu Feng
- Department of Vascular Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, China
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30
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Guerrini V, Prideaux B, Blanc L, Bruiners N, Arrigucci R, Singh S, Ho-Liang HP, Salamon H, Chen PY, Lakehal K, Subbian S, O’Brien P, Via LE, Barry CE, Dartois V, Gennaro ML. Storage lipid studies in tuberculosis reveal that foam cell biogenesis is disease-specific. PLoS Pathog 2018; 14:e1007223. [PMID: 30161232 PMCID: PMC6117085 DOI: 10.1371/journal.ppat.1007223] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 07/16/2018] [Indexed: 12/16/2022] Open
Abstract
Foam cells are lipid-laden macrophages that contribute to the inflammation and tissue damage associated with many chronic inflammatory disorders. Although foam cell biogenesis has been extensively studied in atherosclerosis, how these cells form during a chronic infectious disease such as tuberculosis is unknown. Here we report that, unlike the cholesterol-laden cells of atherosclerosis, foam cells in tuberculous lung lesions accumulate triglycerides. Consequently, the biogenesis of foam cells varies with the underlying disease. In vitro mechanistic studies showed that triglyceride accumulation in human macrophages infected with Mycobacterium tuberculosis is mediated by TNF receptor signaling through downstream activation of the caspase cascade and the mammalian target of rapamycin complex 1 (mTORC1). These features are distinct from the known biogenesis of atherogenic foam cells and establish a new paradigm for non-atherogenic foam cell formation. Moreover, they reveal novel targets for disease-specific pharmacological interventions against maladaptive macrophage responses.
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Affiliation(s)
- Valentina Guerrini
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States of America
| | - Brendan Prideaux
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States of America
| | - Landry Blanc
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States of America
| | - Natalie Bruiners
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States of America
| | - Riccardo Arrigucci
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States of America
| | - Sukhwinder Singh
- Department of Pathology and Laboratory Medicine, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States of America
| | - Hsin Pin Ho-Liang
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States of America
| | - Hugh Salamon
- Knowledge Synthesis, Berkeley, CA, United States of America
| | - Pei-Yu Chen
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States of America
| | - Karim Lakehal
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States of America
| | - Selvakumar Subbian
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States of America
| | - Paul O’Brien
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States of America
| | - Laura E. Via
- Tuberculosis Research Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Clifton E. Barry
- Tuberculosis Research Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Véronique Dartois
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States of America
| | - Maria Laura Gennaro
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States of America
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Abstract
PURPOSE OF REVIEW Preeclampsia (PE) is a hypertensive disorder exclusive for pregnancy. It affects women all over the world and poses a great threat to life, both for mother and child. No definitive treatment exists and placenta delivery comprises the only known cure for PE. One of the most severe complications observed in preeclamptic women is the occurrence of cardiovascular diseases (CVDs) later in life. RECENT FINDINGS Both PE and CVDs share some of their pathogenic pathways and gene variations. Thus far, a number of publications have examined those relationships; however, almost all of them focus only on common risk factors. The precise pathomechanism and genetic basis of PE and its associated cardiovascular complications remain unknown. Therefore, the aim of this review is to unify and clarify the current state of knowledge and provide direction for future studies, especially those regarding the genetic aspect.
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Affiliation(s)
- Michalina Lisowska
- Department of Medical Biotechnology, Medical University of Lodz, Zeligowskiego 7/9, Łódź, Poland.
| | - Tadeusz Pietrucha
- Department of Medical Biotechnology, Medical University of Lodz, Zeligowskiego 7/9, Łódź, Poland
| | - Agata Sakowicz
- Department of Medical Biotechnology, Medical University of Lodz, Zeligowskiego 7/9, Łódź, Poland
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Tsoupras A, Lordan R, Zabetakis I. Inflammation, not Cholesterol, Is a Cause of Chronic Disease. Nutrients 2018; 10:E604. [PMID: 29757226 PMCID: PMC5986484 DOI: 10.3390/nu10050604] [Citation(s) in RCA: 177] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 05/03/2018] [Accepted: 05/09/2018] [Indexed: 12/17/2022] Open
Abstract
Since the Seven Countries Study, dietary cholesterol and the levels of serum cholesterol in relation to the development of chronic diseases have been somewhat demonised. However, the principles of the Mediterranean diet and relevant data linked to the examples of people living in the five blue zones demonstrate that the key to longevity and the prevention of chronic disease development is not the reduction of dietary or serum cholesterol but the control of systemic inflammation. In this review, we present all the relevant data that supports the view that it is inflammation induced by several factors, such as platelet-activating factor (PAF), that leads to the onset of cardiovascular diseases (CVD) rather than serum cholesterol. The key to reducing the incidence of CVD is to control the activities of PAF and other inflammatory mediators via diet, exercise, and healthy lifestyle choices. The relevant studies and data supporting these views are discussed in this review.
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Affiliation(s)
- Alexandros Tsoupras
- Department of Biological Sciences, University of Limerick, V94 T9PX Limerick, Ireland.
| | - Ronan Lordan
- Department of Biological Sciences, University of Limerick, V94 T9PX Limerick, Ireland.
| | - Ioannis Zabetakis
- Department of Biological Sciences, University of Limerick, V94 T9PX Limerick, Ireland.
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33
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Smith SR, Schaaf K, Rajabalee N, Wagner F, Duverger A, Kutsch O, Sun J. The phosphatase PPM1A controls monocyte-to-macrophage differentiation. Sci Rep 2018; 8:902. [PMID: 29343725 PMCID: PMC5772551 DOI: 10.1038/s41598-017-18832-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 12/18/2017] [Indexed: 02/06/2023] Open
Abstract
Differentiation of circulating monocytes into tissue-bound or tissue-resident macrophages is a critical regulatory process affecting host defense and inflammation. However, the regulatory signaling pathways that control the differentiation of monocytes into specific and distinct functional macrophage subsets are poorly understood. Herein, we demonstrate that monocyte-to-macrophage differentiation is controlled by the Protein Phosphatase, Mg2+/Mn2+-dependent 1A (PPM1A). Genetic manipulation experiments demonstrated that overexpression of PPM1A attenuated the macrophage differentiation program, while knockdown of PPM1A expression accelerated the ability of monocytes to differentiate into macrophages. We identify imiquimod and Pam3CSK4 as two Toll-like receptor agonists that induce PPM1A expression, and show that increased expression of PPM1A at the onset of differentiation impairs cellular adherence, reduces expression of inflammatory (M1) macrophage-specific markers, and inhibits the production of inflammatory cytokines. Our findings reveal PPM1A as a negative threshold regulator of M1-type monocyte-to-macrophage differentiation, establishing it as a key phosphatase that orchestrates this program.
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Affiliation(s)
- Samuel R Smith
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Kaitlyn Schaaf
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Nusrah Rajabalee
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada
| | - Frederic Wagner
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Alexandra Duverger
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Olaf Kutsch
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Jim Sun
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada.
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34
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Abstract
Cardiovascular diseases (CVDs) are the commonest cause of global mortality and morbidity. Atherosclerosis, the fundamental pathological manifestation of CVDs, is a complex process and is poorly managed both in terms of preventive and therapeutic intervention. Aberrant lipid metabolism and chronic inflammation play critical roles in the development of atherosclerosis. These processes can be targeted for effective management of the disease. Although managing lipid metabolism is in the forefront of current therapeutic approaches, controlling inflammation may also prove to be crucial for an efficient treatment regimen of the disease. Flavonoids, the plant-derived polyphenols, are known for their antiinflammatory properties. This review discusses the possible antiatherogenic role of 3 flavonoids, namely, chrysin, quercetin, and luteolin primarily known for their antiinflammatory properties.
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35
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Angelovich TA, Hearps AC, Maisa A, Kelesidis T, Jaworowski A. Quantification of Monocyte Transmigration and Foam Cell Formation from Individuals with Chronic Inflammatory Conditions. J Vis Exp 2017:56293. [PMID: 29155735 PMCID: PMC5752417 DOI: 10.3791/56293] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Coronary artery disease (CAD) is a leading cause of morbidity and mortality worldwide. Atherosclerosis, a leading cause of CAD, is initiated by the transmigration of innate immune monocytes to inflammatory sites of deposited lipid called fatty streaks, which are present in arterial walls of medium to large arteries. The key pathogenic feature of lesions at this early stage of atherosclerosis is the maturation of monocytes which migrate into arteries to form foam cells or lipid-laden macrophages. Considerable evidence supports the hypothesis that risk of atherosclerosis is increased by chronic inflammatory conditions accompanying diseases such as rheumatoid arthritis and HIV, as well as general ageing, and that this risk is predicted by monocyte activation. While mouse models provide a good platform to investigate the role of monocytes in atherogenesis in vivo, they require genetic alteration of natural cholesterol metabolism and drastic alteration of normal mouse diets, and have limited suitability for the study of atherogenic influences of human comorbid diseases. This motivated us to develop a human in vitro model to measure the atherogenic potential of monocytes isolated from individuals with defined disease states. Currently, human in vitro models are limiting in that they evaluate monocyte transmigration and foam cell formation in isolation. Here we describe a protocol in which monocytes isolated from patient blood transmigrate across human endothelial cells into a type 1 collagen matrix, and their propensity to mature into foam cells in the presence or absence of exogenous lipid is measured. The protocol has been validated for the use of human monocytes purified from individuals with HIV infection and elderly HIV uninfected individuals. This model is versatile and allows monocyte transmigration and foam cell formation to be evaluated using either microscopy or flow cytometry as well as allowing the assessment of atherogenic factors present in serum or plasma.
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Affiliation(s)
- Thomas A Angelovich
- Centre for Biomedical Research, Burnet Institute; School of Health and Biomedical Sciences, RMIT University
| | - Anna C Hearps
- Centre for Biomedical Research, Burnet Institute; Department of Infectious Diseases, Monash University
| | - Anna Maisa
- Centre for Biomedical Research, Burnet Institute
| | | | - Anthony Jaworowski
- Centre for Biomedical Research, Burnet Institute; Department of Infectious Diseases, Monash University;
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36
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Sokolic J, Tokmadzic VS, Knezevic D, Medved I, Vukelic Damjani N, Balen S, Rakic M, Lanca Bastiancic A, Laskarin G. Endothelial dysfunction mediated by interleukin-18 in patients with ischemic heart disease undergoing coronary artery bypass grafting surgery. Med Hypotheses 2017; 104:20-24. [PMID: 28673582 DOI: 10.1016/j.mehy.2017.05.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 05/06/2017] [Indexed: 12/16/2022]
Abstract
When medication management or percutaneous coronary intervention is not successful in patients with advanced ischemic heart disease, surgical revascularisation-predominantly coronary artery bypass grafting (CABG)-is considered the gold standard. However, CABG surgery can lead to ischemia/reperfusion injury, which is characterized by a strong inflammatory response. Interleukin (IL)-18, is a strong inflammatory mediator, that is released from cardiomyocytes and can be found in the systemic circulation of patients during and immediately after CABG surgery. The existing damage of endothelial glycocalyx in patients with ischemic heart disease is further impaired concurrently during the surgery due to the anaesthesia-surgical technique used and intravascular fluid loading. This results in the increased incidence of adverse events, including myocardial infarction. IL-18 leads to the activation of lymphocyte cytotoxicity via cytotoxic mediators (Fas ligand, Tumour necrosis factor (TNF)-related apoptosis-inducing ligand, perforin, and granulysin). We hypothesize that IL-18 is released locally in the heart and the systemic circulation in patients undergoing CABG surgery and may be correlated with the level of activity of circulating lymphocytes. In turn, this may lead to lymphocyte-mediated cytotoxicity directed toward damaged and activated endothelial cells. Shear stress glycocalyx, as well as damaged and activated endothelial cells then become the main the source of pro-inflammatory cytokines, chemokines, and adhesion molecules. These attract activated lymphocytes to adhere to the endothelium or enter the subintimal layer, increasing existing or initiating the formation of new plaques, which leads to the development of myocardial infarction during or shortly after surgery. To evaluate our hypothesis, we will measure the local concentration of IL-18 in the sinus coronarius and systemic circulation. These values will then be correlated with immunological and biochemical parameters, predominantly with the concentration of degradation products of glycocalyx and cytotoxic mediators in activated lymphocytes. If our hypothesis is correct, measuring the IL-18 concentration that is responsible for glycocalyx deterioration, may become a useful tool for predicting myocardial infarction occurrence in patients undergoing CABG surgery.
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Affiliation(s)
- Jadranko Sokolic
- Clinic of Anesthesiology and Intensive Care Medicine, Clinical Hospital Center Rijeka, 51 000 Rijeka, Kresimirova 42, Croatia
| | - Vlatka Sotosek Tokmadzic
- Clinic of Anesthesiology and Intensive Care Medicine, Clinical Hospital Center Rijeka, 51 000 Rijeka, Kresimirova 42, Croatia; Department of Anesthesiology, Reanimatology and Intensive Care, Faculty of Medicine, University of Rijeka, 51000 Rijeka, B. Branchetta 20, Croatia.
| | - Danijel Knezevic
- Department of Anesthesiology, Reanimatology and Intensive Care, Faculty of Medicine, University of Rijeka, 51000 Rijeka, B. Branchetta 20, Croatia
| | - Igor Medved
- Department of Surgery, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Tome Strizica 3, Croatia
| | - Nada Vukelic Damjani
- Department of Transfusion Medicine, Clinical Hospital Center Rijeka, 51 000 Rijeka, Kresimirova 42, Croatia
| | - Sanja Balen
- Department of Transfusion Medicine, Clinical Hospital Center Rijeka, 51 000 Rijeka, Kresimirova 42, Croatia
| | - Marijana Rakic
- Division of Cardiology, Hospital for Medical Rehabilitation of the Hearth and Lung Diseases and Rheumatism "Thalassotherapia" Opatija, 51410 Opatija, M. Tita 188, Croatia
| | - Ana Lanca Bastiancic
- Division of Cardiology, Hospital for Medical Rehabilitation of the Hearth and Lung Diseases and Rheumatism "Thalassotherapia" Opatija, 51410 Opatija, M. Tita 188, Croatia
| | - Gordana Laskarin
- Division of Cardiology, Hospital for Medical Rehabilitation of the Hearth and Lung Diseases and Rheumatism "Thalassotherapia" Opatija, 51410 Opatija, M. Tita 188, Croatia; Department of Physiology and Immunology, Medical Faculty, University of Rijeka, 51000 Rijeka, B. Branchetta 20, Croatia
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Xue F, Nie X, Shi J, Liu Q, Wang Z, Li X, Zhou J, Su J, Xue M, Chen WD, Wang YD. Quercetin Inhibits LPS-Induced Inflammation and ox-LDL-Induced Lipid Deposition. Front Pharmacol 2017; 8:40. [PMID: 28217098 PMCID: PMC5289956 DOI: 10.3389/fphar.2017.00040] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 01/18/2017] [Indexed: 12/14/2022] Open
Abstract
Aberrant activation of inflammation and excess accumulation of lipids play crucial role in the occurrence and progression of atherosclerosis (AS). Quercetin (QCT) has been tested effectively to cure AS. It is widely distributed in plant foods and has been proved to have potential antioxidative and anticancer activities. However, the underlying molecular mechanisms of OCT in AS are not completely understood. In the present study, we stimulated murine RAW264.7 cells with lipopolysaccharide (LPS) or oxidized low-density lipoproteins (ox-LDL) to mimic the development of AS. The data show that QCT treatment leads to an obvious decrease of multiple inflammatory cytokines in transcript level, including interleukin (IL)-1α, IL-1β, IL-2, IL-10, macrophage chemoattractant protein-1 (MCP-1), and cyclooxygenase-2 (COX-2) induced by LPS. Moreover, expressions of other factors that contribute to the AS development, such as matrix metalloproteinase-1 (MMP-1) and suppressor of cytokine signaling 3 (SOCS3) induced by LPS are also downregulated by QCT. Furthermore, we found that QCT suppressed LPS-induced the phosphorylation of STAT3. Meanwhile, QCT could ameliorate lipid deposition and overproduction of reactive oxygen species induced by ox-LDL, and block the expression of lectin-like oxidized LDL receptor-1 (LOX-1) in cultured macrophages. Taken together, our data reveal that QCT has obvious anti-inflammatory and antioxidant virtues and could be a therapeutic agent for the prevention and treatment of AS.
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Affiliation(s)
- Feng Xue
- Key Laboratory of Molecular Pathology, School of Basic Medical Science, Inner Mongolia Medical University Hohhot, China
| | - Xiaobo Nie
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan University Kaifeng, China
| | - Jianping Shi
- Chinese Internal Medicine Teaching and Researching Section, Inner Mongolia Medical University Hohhot, China
| | - Qingxue Liu
- Key Laboratory of Molecular Pathology, School of Basic Medical Science, Inner Mongolia Medical University Hohhot, China
| | - Ziwei Wang
- State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology Beijing, China
| | - Xiting Li
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan University Kaifeng, China
| | - Jinqiu Zhou
- Internal Medicine Section, No. 253 Hospital of PLA Hohhot, China
| | - Jia Su
- State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology Beijing, China
| | - Mingming Xue
- Key Laboratory of Molecular Pathology, School of Basic Medical Science, Inner Mongolia Medical University Hohhot, China
| | - Wei-Dong Chen
- Key Laboratory of Molecular Pathology, School of Basic Medical Science, Inner Mongolia Medical UniversityHohhot, China; Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan UniversityKaifeng, China
| | - Yan-Dong Wang
- State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology Beijing, China
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LOX-1 and Its Splice Variants: A New Challenge for Atherosclerosis and Cancer-Targeted Therapies. Int J Mol Sci 2017; 18:ijms18020290. [PMID: 28146073 PMCID: PMC5343826 DOI: 10.3390/ijms18020290] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 01/15/2017] [Accepted: 01/23/2017] [Indexed: 12/13/2022] Open
Abstract
Alternative splicing (AS) is a process in which precursor messenger RNA (pre-mRNA) splicing sites are differentially selected to diversify the protein isoform population. Changes in AS patterns have an essential role in normal development, differentiation and response to physiological stimuli. It is documented that AS can generate both “risk” and “protective” splice variants that can contribute to the pathogenesis of several diseases including atherosclerosis. The main endothelial receptor for oxidized low-density lipoprotein (ox-LDLs) is LOX-1 receptor protein encoded by the OLR1 gene. When OLR1 undergoes AS events, it generates three variants: OLR1, OLR1D4 and LOXIN. The latter lacks exon 5 and two-thirds of the functional domain. Literature data demonstrate a protective role of LOXIN in pathologies correlated with LOX-1 overexpression such as atherosclerosis and tumors. In this review, we summarize recent developments in understanding of OLR1 AS while also highlighting data warranting further investigation of this process as a novel therapeutic target.
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39
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Adipose-specific inactivation of JNK alleviates atherosclerosis in apoE-deficient mice. Clin Sci (Lond) 2016; 130:2087-2100. [DOI: 10.1042/cs20160465] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 08/10/2016] [Indexed: 02/05/2023]
Abstract
Both atherosclerosis and obesity, an independent atherosclerotic risk factor, are associated with enhanced systemic inflammation. Obesity is also characterized by increased adipose tissue inflammation. However, the molecular mechanism underlying the accelerated atherosclerosis in obesity remains unclear. In obesity, activation of c-Jun N-terminal kinase (JNK) contributes to adipose tissue inflammation. The present study investigated whether the suppression of fat inflammation through adipose-specific JNK inactivation could protect against atherosclerosis in mice. ApoE−/− mice were cross-bred with transgenic mice with adipose-specific expression of a dominant negative form of JNK (dnJNK) to generate apoE−/−/dnJNK (ADJ) mice. ADJ mice treated with a high-fat–high-cholesterol diet exhibited significant attenuations of visceral fat and systemic inflammation without changes in lipid or glucose metabolism, and were protected against atherosclerosis, when compared with apoE−/− mice. Lean apoE−/− mice that received transplantation of visceral fat from obese wild-type donor mice for 4 weeks showed exacerbated systemic inflammation and atherosclerotic plaque formation. Conversely, apoE−/− recipients carrying a visceral fat graft from obese dnJNK donors were protected against enhanced systemic inflammation and atherogenesis. The beneficial effects of adipose-specific JNK inactivation on atherogenesis in apoE−/− recipients were significantly compromised by continuous infusion of recombinant adipocyte–fatty acid-binding protein (A-FABP), previously shown to interact with JNK via a positive feedback loop to modulate inflammatory responses. Together these data suggested that enhanced atherosclerosis in obesity can be attributed, at least in part, to a distant cross-talk between visceral fat and the vasculature, mediated by the release of proinflammatory cytokines, such as A-FABP, from the inflamed visceral adipose tissue with JNK activation.
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Zeya B, Arjuman A, Chandra NC. Lectin-like Oxidized Low-Density Lipoprotein (LDL) Receptor (LOX-1): A Chameleon Receptor for Oxidized LDL. Biochemistry 2016; 55:4437-44. [DOI: 10.1021/acs.biochem.6b00469] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Bushra Zeya
- Department
of Biochemistry, All India Institute of Medical Sciences, Patna 801507, India
| | - Albina Arjuman
- Division of P&I, Indian Council of Medical Research, New Delhi 110 029, India
| | - Nimai Chand Chandra
- Department
of Biochemistry, All India Institute of Medical Sciences, Patna 801507, India
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41
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Gautheron J, Vucur M, Schneider AT, Severi I, Roderburg C, Roy S, Bartneck M, Schrammen P, Diaz MB, Ehling J, Gremse F, Heymann F, Koppe C, Lammers T, Kiessling F, Van Best N, Pabst O, Courtois G, Linkermann A, Krautwald S, Neumann UP, Tacke F, Trautwein C, Green DR, Longerich T, Frey N, Luedde M, Bluher M, Herzig S, Heikenwalder M, Luedde T. The necroptosis-inducing kinase RIPK3 dampens adipose tissue inflammation and glucose intolerance. Nat Commun 2016; 7:11869. [PMID: 27323669 PMCID: PMC4919522 DOI: 10.1038/ncomms11869] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 05/09/2016] [Indexed: 12/20/2022] Open
Abstract
Receptor-interacting protein kinase 3 (RIPK3) mediates necroptosis, a form of programmed cell death that promotes inflammation in various pathological conditions, suggesting that it might be a privileged pharmacological target. However, its function in glucose homeostasis and obesity has been unknown. Here we show that RIPK3 is over expressed in the white adipose tissue (WAT) of obese mice fed with a choline-deficient high-fat diet. Genetic inactivation of Ripk3 promotes increased Caspase-8-dependent adipocyte apoptosis and WAT inflammation, associated with impaired insulin signalling in WAT as the basis for glucose intolerance. Similarly to mice, in visceral WAT of obese humans, RIPK3 is overexpressed and correlates with the body mass index and metabolic serum markers. Together, these findings provide evidence that RIPK3 in WAT maintains tissue homeostasis and suppresses inflammation and adipocyte apoptosis, suggesting that systemic targeting of necroptosis might be associated with the risk of promoting insulin resistance in obese patients.
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Affiliation(s)
- Jérémie Gautheron
- Department of Medicine III, University Hospital RWTH Aachen, Aachen 52074, Germany.,Division of GI and Hepatobiliary Oncology, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - Mihael Vucur
- Department of Medicine III, University Hospital RWTH Aachen, Aachen 52074, Germany.,Division of GI and Hepatobiliary Oncology, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - Anne T Schneider
- Department of Medicine III, University Hospital RWTH Aachen, Aachen 52074, Germany.,Division of GI and Hepatobiliary Oncology, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - Ilenia Severi
- Department of Experimental and Clinical Medicine, University of Ancona, Ancona 60020, Italy
| | - Christoph Roderburg
- Department of Medicine III, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - Sanchari Roy
- Department of Medicine III, University Hospital RWTH Aachen, Aachen 52074, Germany.,Division of GI and Hepatobiliary Oncology, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - Matthias Bartneck
- Department of Medicine III, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - Peter Schrammen
- Department of Medicine III, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - Mauricio Berriel Diaz
- Institute for Diabetes and Cancer IDC Helmholtz Center Munich, Neuherberg 85764 and Joint Heidelberg-IDC Translational Diabetes Program, Inner Medicine I, Heidelberg University, Heidelberg 69120, Germany
| | - Josef Ehling
- Department for Experimental Molecular Imaging, University Clinic and Helmholtz Institute for Biomedical Engineering RWTH Aachen, Aachen 52074, Germany
| | - Felix Gremse
- Department for Experimental Molecular Imaging, University Clinic and Helmholtz Institute for Biomedical Engineering RWTH Aachen, Aachen 52074, Germany
| | - Felix Heymann
- Department of Medicine III, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - Christiane Koppe
- Department of Medicine III, University Hospital RWTH Aachen, Aachen 52074, Germany.,Division of GI and Hepatobiliary Oncology, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - Twan Lammers
- Department for Experimental Molecular Imaging, University Clinic and Helmholtz Institute for Biomedical Engineering RWTH Aachen, Aachen 52074, Germany
| | - Fabian Kiessling
- Department for Experimental Molecular Imaging, University Clinic and Helmholtz Institute for Biomedical Engineering RWTH Aachen, Aachen 52074, Germany
| | - Niels Van Best
- Institut of Medical Microbiology, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - Oliver Pabst
- Institut of Medical Microbiology, University Hospital RWTH Aachen, Aachen 52074, Germany
| | | | - Andreas Linkermann
- Division of Nephrology and Hypertension, Christian-Albrechts-University, Kiel 24105, Germany
| | - Stefan Krautwald
- Division of Nephrology and Hypertension, Christian-Albrechts-University, Kiel 24105, Germany
| | - Ulf P Neumann
- Department of Visceral and Transplantation Surgery, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - Frank Tacke
- Department of Medicine III, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - Christian Trautwein
- Department of Medicine III, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - Douglas R Green
- Department of Immunology, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA
| | - Thomas Longerich
- Institute of Pathology, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - Norbert Frey
- Department of Cardiology and Angiology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel 24105, Germany
| | - Mark Luedde
- Department of Cardiology and Angiology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel 24105, Germany
| | - Matthias Bluher
- Department of Medicine, University of Leipzig, Leipzig 04103, Germany
| | - Stephan Herzig
- Institute for Diabetes and Cancer IDC Helmholtz Center Munich, Neuherberg 85764 and Joint Heidelberg-IDC Translational Diabetes Program, Inner Medicine I, Heidelberg University, Heidelberg 69120, Germany.,German Center for Diabetes Research (DZD), Neuherberg 85764, Germany
| | - Mathias Heikenwalder
- Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), Heidelberg 69120, Germany
| | - Tom Luedde
- Department of Medicine III, University Hospital RWTH Aachen, Aachen 52074, Germany.,Division of GI and Hepatobiliary Oncology, University Hospital RWTH Aachen, Aachen 52074, Germany
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Angelovich TA, Shi MDY, Zhou J, Maisa A, Hearps AC, Jaworowski A. Ex vivo foam cell formation is enhanced in monocytes from older individuals by both extrinsic and intrinsic mechanisms. Exp Gerontol 2016; 80:17-26. [PMID: 27073169 DOI: 10.1016/j.exger.2016.04.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Revised: 02/24/2016] [Accepted: 04/06/2016] [Indexed: 12/20/2022]
Abstract
Aging is the strongest predictor of cardiovascular diseases such as atherosclerosis, which are the leading causes of morbidity and mortality in elderly men. Monocytes play an important role in atherosclerosis by differentiating into foam cells (lipid-laden macrophages) and producing atherogenic proinflammatory cytokines. Monocytes from the elderly have an inflammatory phenotype that may promote atherosclerotic plaque development; here we examined whether they are more atherogenic than those from younger individuals. Using an in vitro model of monocyte transmigration and foam cell formation, monocytes from older men (median age [range]: 75 [58-85] years, n=20) formed foam cells more readily than those of younger men (32 [23-46] years, n=20) (P<0.003) following transmigration across a TNF-activated endothelial monolayer. Compared to young men, monocytes from the elderly had impaired cholesterol efflux and lower expression of regulators of cholesterol transport and metabolism. Foam cell formation was enhanced by soluble factors in serum from older men, but did not correlate with plasma lipid levels. Of the three subsets, intermediate monocytes formed the most foam cells. Therefore, both cellular changes to monocytes and soluble plasma factors in older men primes monocytes for foam cell formation following transendothelial migration, which may contribute to enhanced atherosclerosis in this population.
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Affiliation(s)
- Thomas A Angelovich
- Centre for Biomedical Research, Burnet Institute, 85 Commercial Road, Melbourne, Victoria 3004, Australia; School of Applied Sciences, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia
| | - Margaret D Y Shi
- Centre for Biomedical Research, Burnet Institute, 85 Commercial Road, Melbourne, Victoria 3004, Australia
| | - Jingling Zhou
- Centre for Biomedical Research, Burnet Institute, 85 Commercial Road, Melbourne, Victoria 3004, Australia
| | - Anna Maisa
- Centre for Biomedical Research, Burnet Institute, 85 Commercial Road, Melbourne, Victoria 3004, Australia
| | - Anna C Hearps
- Centre for Biomedical Research, Burnet Institute, 85 Commercial Road, Melbourne, Victoria 3004, Australia; Department of Infectious Diseases, Monash University, Level 2 85 Commercial Road, Melbourne, Victoria 3004, Australia
| | - Anthony Jaworowski
- Centre for Biomedical Research, Burnet Institute, 85 Commercial Road, Melbourne, Victoria 3004, Australia; Department of Infectious Diseases, Monash University, Level 2 85 Commercial Road, Melbourne, Victoria 3004, Australia; Department of Immunology, Monash University, Level 6 89 Commercial Road, Melbourne, Victoria 3004, Australia.
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Salusin-β induces foam cell formation and monocyte adhesion in human vascular smooth muscle cells via miR155/NOX2/NFκB pathway. Sci Rep 2016; 6:23596. [PMID: 27004848 PMCID: PMC4804242 DOI: 10.1038/srep23596] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 03/09/2016] [Indexed: 01/07/2023] Open
Abstract
Vascular smooth muscle cells (VSMCs) are indispensible components in foam cell formation. Salusin-β is a stimulator in the progression of atherosclerosis. Here, we showed that salusin-β increased foam cell formation evidenced by accumulation of lipid droplets and intracellular cholesterol content, and promoted monocyte adhesion in human VSMCs. Salusin-β increased the expressions and activity of acyl coenzyme A:cholesterol acyltransferase-1 (ACAT-1) and vascular cell adhesion molecule-1 (VCAM-1) in VSMCs. Silencing of ACAT-1 abolished the salusin-β-induced lipid accumulation, and silencing of VCAM-1 prevented the salusin-β-induced monocyte adhesion in VSMCs. Salusin-β caused p65-NFκB nuclear translocation and increased p65 occupancy at the ACAT-1 and VCAM-1 promoter. Inhibition of NFκB with Bay 11-7082 prevented the salusin-β-induced ACAT-1 and VCAM-1 upregulation, foam cell formation and monocyte adhesion in VSMCs. Scavenging ROS, inhibiting NADPH oxidase or knockdown of NOX2 abolished the effects of salusin-β on ACAT-1 and VCAM-1 expressions, p65-NFκB nuclear translocation, lipid accumulation and monocyte adhesion in VSMCs. Salusin-β increased miR155 expression, and knockdown of miR155 prevented the effects of salusin-β on ACAT-1 and VCAM-1 expressions, p65-NFκB nuclear translocation, lipid accumulation, monocyte adhesion and ROS production in VSMCs. These results indicate that salusin-β induces foam formation and monocyte adhesion via miR155/NOX2/NFκB-mediated ACAT-1 and VCAM-1 expressions in VSMCs.
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44
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Samanta S, Balasubramanian S, Rajasingh S, Patel U, Dhanasekaran A, Dawn B, Rajasingh J. MicroRNA: A new therapeutic strategy for cardiovascular diseases. Trends Cardiovasc Med 2016; 26:407-19. [PMID: 27013138 DOI: 10.1016/j.tcm.2016.02.004] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 02/13/2016] [Accepted: 02/17/2016] [Indexed: 12/21/2022]
Abstract
Myocardial infarction, atherosclerosis, and hypertension are the most common heart-related diseases that affect both the heart and the blood vessels. Multiple independent risk factors have been shown to be responsible for cardiovascular diseases. The combination of a healthy diet, exercise, and smoking cessation keeps these risk factors in check and helps maintain homeostasis. The dynamic monolayer endothelial cell integrity and cell-cell communication are the fundamental mechanisms in maintaining homeostasis. Recently, it has been revealed that small noncoding RNAs (ncRNAs) play a critical role in regulation of genes involved in either posttranscriptional or pretranslational modifications. They also control diverse biological functions like development, differentiation, growth, and metabolism. Among ncRNAs, the short interfering RNAs (siRNAs), and microRNAs (miRNAs) have been extensively studied, but their specific functions remain largely unknown. In recent years, miRNAs are efficiently studied as one of the important candidates for involvement in most biological processes and have been implicated in many human diseases. Thus, the identification and the respective targets of miRNAs may provide novel molecular insight and new therapeutic strategies to treat diseases. This review summarizes the recent developments and insight on the role of miRNAs in cardiovascular disease prognosis, diagnostic and clinical applications.
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Affiliation(s)
- Saheli Samanta
- Department of Internal Medicine, Cardiovascular Research Institute, University of Kansas Medical Center, Kansas City, KS
| | - Sathyamoorthy Balasubramanian
- Department of Internal Medicine, Cardiovascular Research Institute, University of Kansas Medical Center, Kansas City, KS; Centre for Biotechnology, Anna University, Chennai, Tamil Nadu, India
| | - Sheeja Rajasingh
- Department of Internal Medicine, Cardiovascular Research Institute, University of Kansas Medical Center, Kansas City, KS
| | - Urmi Patel
- Department of Internal Medicine, Cardiovascular Research Institute, University of Kansas Medical Center, Kansas City, KS
| | | | - Buddhadeb Dawn
- Department of Internal Medicine, Cardiovascular Research Institute, University of Kansas Medical Center, Kansas City, KS
| | - Johnson Rajasingh
- Department of Internal Medicine, Cardiovascular Research Institute, University of Kansas Medical Center, Kansas City, KS; Department of Biochemistry and Molecular Biology, University of Kansas Medical Center, Kansas City, KS.
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45
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Monocytes from HIV-infected individuals show impaired cholesterol efflux and increased foam cell formation after transendothelial migration. AIDS 2015; 29:1445-57. [PMID: 26244384 DOI: 10.1097/qad.0000000000000739] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
DESIGN HIV-infected (HIV+) individuals have an increased risk of atherosclerosis and cardiovascular disease which is independent of antiretroviral therapy and traditional risk factors. Monocytes play a central role in the development of atherosclerosis, and HIV-related chronic inflammation and monocyte activation may contribute to increased atherosclerosis, but the mechanisms are unknown. METHODS Using an in-vitro model of atherosclerotic plaque formation, we measured the transendothelial migration of purified monocytes from age-matched HIV+ and uninfected donors and examined their differentiation into foam cells. Cholesterol efflux and the expression of cholesterol metabolism genes were also assessed. RESULTS Monocytes from HIV+ individuals showed increased foam cell formation compared with controls (18.9 vs. 0%, respectively, P = 0.004) and serum from virologically suppressed HIV+ individuals potentiated foam cell formation by monocytes from both uninfected and HIV+ donors. Plasma tumour necrosis factor (TNF) levels were increased in HIV+ vs. control donors (5.9 vs. 3.5 pg/ml, P = 0.02) and foam cell formation was inhibited by blocking antibodies to TNF receptors, suggesting a direct effect on monocyte differentiation to foam cells. Monocytes from virologically suppressed HIV+ donors showed impaired cholesterol efflux and decreased expression of key genes regulating cholesterol metabolism, including the cholesterol transporter ABCA1 (P = 0.02). CONCLUSION Monocytes from HIV+ individuals show impaired cholesterol efflux and are primed for foam cell formation following transendothelial migration. Factors present in HIV+ serum, including elevated TNF levels, further enhance foam cell formation. The proatherogenic phenotype of monocytes persists in virologically suppressed HIV+ individuals and may contribute mechanistically to increased atherosclerosis in this population.
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46
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Sun K, Xiang X, Li N, Huang S, Qin X, Wu Y, Tang X, Gao P, Li J, Wu T, Chen D, Hu Y. Gene-Diet Interaction between SIRT6 and Soybean Intake for Different Levels of Pulse Wave Velocity. Int J Mol Sci 2015; 16:14338-52. [PMID: 26114387 PMCID: PMC4519845 DOI: 10.3390/ijms160714338] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 06/19/2015] [Accepted: 06/19/2015] [Indexed: 12/20/2022] Open
Abstract
Soybean is a common food for the Chinese people. We aimed to investigate the risk for brachial ankle pulse wave velocity (baPWV) with inflammatory-related SNPs and soybean. baPWV was measured, and 16 inflammatory-related SNPs located on ADIPOQ, CDH13, SIRT3, SIRT6, CXCL12, CXCR4, NOS1, PON1 and CDKN2B were genotyped in 1749 Chinese participants recruited from various communities. ADIPOQ rs12495941 (GT/TT vs. GG: crude OR = 1.27, p = 0.044) and SIRT6 rs107251 (CT/TT vs. CC: crude OR = 0.74, p = 0.009) were associated with abnormal baPWV (baPWV ≥ 1700 cm/s). After adjustment for conventional environmental risk factors, rs12495941 was associated with abnormal baPWV (GT/TT vs. GG: adjusted OR = 1.43, p = 0.011), but the association between rs107251 and abnormal baPWV was not significant (CT/TT vs. CC: adjusted OR = 0.83, p = 0.173). The interaction between rs107251 and soybean intake for different levels of baPWV was statistically significant (p = 0.017). Compared with a high level of soybean intake, a low level of soybean intake can significantly decrease the risk of abnormal baPWV in individuals of rs107251 CT/TT genotypes (≤100 vs. >100 g/week: adjusted OR = 0.542, p = 0.003). In this study, associations between ADIPOQ rs12495941, SIRT6 rs107251 and baPWV, as well as an interaction between SIRT6 rs107251 and soybean intake for different levels of baPWV were found.
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Affiliation(s)
- Kexin Sun
- Department of Epidemiology and Biostatistics, Peking University Health Science Center, 38 Xueyuan Road, Beijing 100191, China.
| | - Xiao Xiang
- Department of Epidemiology and Biostatistics, Peking University Health Science Center, 38 Xueyuan Road, Beijing 100191, China.
| | - Na Li
- Fangshan District Center for Disease Control and Prevention, Beijing 102401, China.
| | - Shaoping Huang
- Fangshan District Center for Disease Control and Prevention, Beijing 102401, China.
| | - Xueying Qin
- Department of Epidemiology and Biostatistics, Peking University Health Science Center, 38 Xueyuan Road, Beijing 100191, China.
| | - Yiqun Wu
- Department of Epidemiology and Biostatistics, Peking University Health Science Center, 38 Xueyuan Road, Beijing 100191, China.
| | - Xun Tang
- Department of Epidemiology and Biostatistics, Peking University Health Science Center, 38 Xueyuan Road, Beijing 100191, China.
| | - Pei Gao
- Department of Epidemiology and Biostatistics, Peking University Health Science Center, 38 Xueyuan Road, Beijing 100191, China.
| | - Jing Li
- Department of Epidemiology and Biostatistics, Peking University Health Science Center, 38 Xueyuan Road, Beijing 100191, China.
| | - Tao Wu
- Department of Epidemiology and Biostatistics, Peking University Health Science Center, 38 Xueyuan Road, Beijing 100191, China.
| | - Dafang Chen
- Department of Epidemiology and Biostatistics, Peking University Health Science Center, 38 Xueyuan Road, Beijing 100191, China.
| | - Yonghua Hu
- Department of Epidemiology and Biostatistics, Peking University Health Science Center, 38 Xueyuan Road, Beijing 100191, China.
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