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Kasahara K, Kerby RL, Zhang Q, Pradhan M, Mehrabian M, Lusis AJ, Bergström G, Bäckhed F, Rey FE. Gut bacterial metabolism contributes to host global purine homeostasis. Cell Host Microbe 2023; 31:1038-1053.e10. [PMID: 37279756 PMCID: PMC10311284 DOI: 10.1016/j.chom.2023.05.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 03/25/2023] [Accepted: 05/10/2023] [Indexed: 06/08/2023]
Abstract
The microbes and microbial pathways that influence host inflammatory disease progression remain largely undefined. Here, we show that variation in atherosclerosis burden is partially driven by gut microbiota and is associated with circulating levels of uric acid (UA) in mice and humans. We identify gut bacterial taxa spanning multiple phyla, including Bacillota, Fusobacteriota, and Pseudomonadota, that use multiple purines, including UA as carbon and energy sources anaerobically. We identify a gene cluster that encodes key steps of anaerobic purine degradation and that is widely distributed among gut-dwelling bacteria. Furthermore, we show that colonization of gnotobiotic mice with purine-degrading bacteria modulates levels of UA and other purines in the gut and systemically. Thus, gut microbes are important drivers of host global purine homeostasis and serum UA levels, and gut bacterial catabolism of purines may represent a mechanism by which gut bacteria influence health.
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Affiliation(s)
- Kazuyuki Kasahara
- Department of Bacteriology, University of Wisconsin-Madison, Madison, WI, USA; Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Robert L Kerby
- Department of Bacteriology, University of Wisconsin-Madison, Madison, WI, USA
| | - Qijun Zhang
- Department of Bacteriology, University of Wisconsin-Madison, Madison, WI, USA
| | - Meenakshi Pradhan
- Department of Molecular and Clinical Medicine, Wallenberg Laboratory, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Margarete Mehrabian
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Aldons J Lusis
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Göran Bergström
- Department of Molecular and Clinical Medicine, Wallenberg Laboratory, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden; Region Västra Götaland, Sahlgrenska University Hospital, Department of Clinical Physiology, Gothenburg, Sweden
| | - Fredrik Bäckhed
- Department of Molecular and Clinical Medicine, Wallenberg Laboratory, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden; Region Västra Götaland, Sahlgrenska University Hospital, Department of Clinical Physiology, Gothenburg, Sweden; Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Federico E Rey
- Department of Bacteriology, University of Wisconsin-Madison, Madison, WI, USA.
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2
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Chen W, Xing J, Liu X, Wang S, Xing D. The role and transformative potential of IL-19 in atherosclerosis. Cytokine Growth Factor Rev 2021; 62:70-82. [PMID: 34600839 DOI: 10.1016/j.cytogfr.2021.09.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/08/2021] [Accepted: 09/10/2021] [Indexed: 12/19/2022]
Abstract
Atherosclerotic cardiovascular disease is the leading cause of death worldwide. Traditionally, IL-19 was thought to be expressed in only immune cells, but studies revealed that IL-19 is also expressed in multiple atherosclerotic plaque cell types, but not normal arteries, in humans and mice. IL-19 reduces the development of atherosclerosis via multiple mechanisms, including balancing cholesterol metabolism; enhancing Th2 immune cell polarization; reducing the inflammatory response; and reducing the proliferation, migration and chemotaxis of vascular smooth muscle cells (VSMCs). Clinical and/or animal studies have primarily aimed to achieve regression and/or stabilization of atherosclerotic plaques, with regression in particular indicating a very good drug response. Most antiatherosclerotic drugs in current clinical use, including atorvastatin and alirocumab, target hyperlipidemia. Several other drugs have also been investigated in clinical trials as anti-inflammatory agents; the development of some of these agents has been terminated (canakinumab, darapladib, varespladib, losmapimod, atreleuton, setileuton, PF-04191834, veliflapon, and methotrexate), but others remain in development (ziltivekimab, tocilizumab, Somalix, IFM-2427, anakinra, mesenchymal stem cells (MSCs), colchicine, everolimus, allopurinol, and montelukast). Most of the tested drugs have shown a limited ability to reverse atherosclerosis in animal studies. Interestingly, recombinant IL-19 (rIL-19) was shown to reduce atherosclerosis development in a time- and dose-dependent manner. A low dose of rIL-19 (1 ng/g/day) reduced aortic arch and root plaque areas by 70.1% and 32.1%, respectively, in LDLR-/- mice. At 10 ng/g/day, rIL-19 completely eliminated atherosclerotic plaques. There were no sex differences in the effects of rIL-19 on atherosclerotic mice. Thus, low-dose rIL-19 is an effective antiatherosclerotic agent, in addition to its efficacy in intimal hyperplasia, spinal cord injury, stroke, and multiple sclerosis. We propose that IL-19 is a promising biomarker and target for the diagnosis and treatment of atherosclerosis. This review considers the role and mechanism of action of IL-19 in atherosclerosis and discusses whether IL-19 is a potential therapeutic target for this condition.
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Affiliation(s)
- Wujun Chen
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong 266071, China
| | - Jiyao Xing
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong 266071, China
| | - Xinlin Liu
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong 266071, China
| | - Shuai Wang
- School of Medical Imaging, Radiotherapy Department, Affiliated Hospital of Weifang Medical University, Weifang, Shandong 261053, China.
| | - Dongming Xing
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong 266071, China; School of Life Sciences, Tsinghua University, Beijing 100084, China.
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3
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Huang Z, Huang B, Wei Q, Su X, Li X, Qin S, Huang W. The Protective Effects of Benzbromarone Against Propofol-Induced Inflammation and Injury in Human Brain Microvascular Endothelial Cells (HBMVECs). Neurotox Res 2021; 39:1449-1458. [PMID: 34216363 DOI: 10.1007/s12640-021-00387-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 05/13/2021] [Accepted: 06/11/2021] [Indexed: 12/12/2022]
Abstract
It has been widely reported that severe neurotoxicity can be induced by the application of propofol, which is closely related to the disruption of the blood-brain barrier (BBB) induced by inflammation and injury in the human brain microvascular endothelial cells (HBMVECs). Benzbromarone is a classic anti-gout agent that has been recently reported to exert anti-inflammatory and anti-oxidative stress effects. In the present study, we aim to investigate the protective property of Benzbromarone against propofol-induced injury on HBMVECs and the underlying mechanism. CCK8 assay was used to detect the cell viability of treated HBMVECs. Oxidative stress in HBMVECs was evaluated by measuring the levels of MDA and mitochondrial ROS. ELISA and qRT-PCR assay were used to determine the production of IL-1β, IL-8, MCP-1, ICAM-1, and VCAM-1 by treated HBMVECs. Calcein-AM staining was utilized to evaluate the attachment of U937 monocytes to HBMVECs. The expression level of Egr-1 was determined by qRT-PCR and Western blot assay. Firstly, the decreased cell viability of HBMVECs induced by propofol was significantly elevated by treatment with Benzbromarone. The increased levels of MDA and mitochondrial ROS induced by propofol were dramatically suppressed by Benzbromarone. Secondly, the excessive production of inflammatory factors (IL-1β, IL-8, and MCP-1) and adhesion molecules (ICAM-1 and VCAM-1) triggered by propofol was pronouncedly inhibited by Benzbromarone. Benzbromarone ameliorated propofol-induced attachment of U937 monocytes to HBMVECs. Lastly, Benzbromarone downregulated propofol-induced expression of the transcriptional factor Egr-1 in HBMVECs. Benzbromarone protected against propofol-induced inflammation and injury through suppressing Egr-1 in human brain vascular endothelial cells.
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Affiliation(s)
- Zehan Huang
- Department of Anesthesiology, Affiliated Hospital of Youjiang Medical University, Baise City, Guangxi, 533000, China
| | - Bo Huang
- Department of Anesthesiology, People's Hospital of Tiandong, Baise City, Guangxi, 533000, China
| | - Qiaosong Wei
- Department of Anesthesiology, People's Hospital of Baise, Baise City, Guangxi, 533000, China
| | - Xiaomei Su
- Department of Anesthesiology, People's Hospital of Baise, Baise City, Guangxi, 533000, China
| | - Xisong Li
- Department of Anesthesiology, People's Hospital of Baise, Baise City, Guangxi, 533000, China
| | - Siping Qin
- Department of Anesthesiology, People's Hospital of Baise, Baise City, Guangxi, 533000, China
| | - Wei Huang
- Department of Anesthesiology, People's Hospital of Baise, Baise City, Guangxi, 533000, China.
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4
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Liu Q, Liu C, Gao Y, Zhang X, Yi N, Cao J, Wang Y, Jiang Y, Tang Z. Gender-Specific Association between Serum Uric Acid and Incident Fundus Arteriosclerosis in Chinese Population: A Retrospective Cross-Sectional Study. Sci Rep 2020; 10:8595. [PMID: 32451435 PMCID: PMC7248060 DOI: 10.1038/s41598-020-65575-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 05/04/2020] [Indexed: 12/11/2022] Open
Abstract
Elevated levels of serum uric acid (SUA) were considered to be risk factors for cardiovascular disease, it has been found to be associated with increased arteriosclerosis. The aim of this study was to explore the gender specific relationship between SUA and fundus arteriosclerosis in a healthy population. In a retrospective cross-sectional study, 23474 individuals without diabetes and hypertension were included in the present study. SUA levels were cut to four groups as Q1 to Q4, according to the quartiles. The odds ratio and 95% confidence interval of different SUA levels were estimated by a binomial logistic regression model. A restrictive cubic spline method was used to estimate the dose-response relationship between SUA and fundus arteriosclerosis. Subgroup analysis was performed to find the gender-specific association between SUA and incident fundus arteriosclerosis. In males, after adjusting for confounding factors, the highest SUA level was significantly associated with the risk of incident fundus arteriosclerosis. The OR with 95%CI for Q4 was 1.44(1.18, 1.76), Q1 as a reference. Specially, for females, SUA level was not associated with the incidence of fundus arteriosclerosis. In conclusion, elevated levels of SUA were associated with the incidence of fundus arteriosclerosis in males, but not in females.
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Affiliation(s)
- Qianqian Liu
- Department of Biostatistics, School of Public Health, Medical College of Soochow University, Suzhou, 215123, China.,Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Medical College of Soochow University, Suzhou, 215123, China
| | - Chunxing Liu
- Department of Laboratory, Hua Dong Sanatorium, Wuxi, 214065, China
| | - Yonghui Gao
- Department of Laboratory, Hua Dong Sanatorium, Wuxi, 214065, China
| | - Xinyan Zhang
- Department of Biostatistics, Jiann-Ping Hsu College of Public Health, Georgia Southern University, Statesboro, GA, 30458, USA
| | - Nengjun Yi
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Jianping Cao
- School of Radiation Medicine and Protection and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215006, China
| | - Yamin Wang
- Department of Basic Science, Changzhou Vocational Institute of Engineering, Changzhou, Jiangsu, 213164, China
| | - Yongbin Jiang
- Department of Health management center, Hua Dong Sanatorium, Wuxi, 214065, China.
| | - Zaixiang Tang
- Department of Biostatistics, School of Public Health, Medical College of Soochow University, Suzhou, 215123, China. .,Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Medical College of Soochow University, Suzhou, 215123, China.
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5
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Kimura Y, Yanagida T, Onda A, Tsukui D, Hosoyamada M, Kono H. Soluble Uric Acid Promotes Atherosclerosis via AMPK (AMP-Activated Protein Kinase)-Mediated Inflammation. Arterioscler Thromb Vasc Biol 2020; 40:570-582. [PMID: 31996020 DOI: 10.1161/atvbaha.119.313224] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Uric acid is supposed but not yet determined to be associated with atherosclerosis. Uric acid is released from damaged cells to form urate crystal, which is recognized by the immune system to produce IL (interleukin)-1. Danger signals and IL-1 have been shown to play an important role in atherosclerosis. We determined whether the physiological level of soluble uric acid promotes inflammation and develops atherosclerosis. Approach and Results: The secretion of IL-1β from human peripheral blood mononuclear cells mediated by NLRP3 (NACHT, LRR, and PYD domain-containing protein 3) inflammasome was promoted by physiological levels in serum uric acid. This augmentation of inflammation was mediated by the regulation of the AMPK (AMP-activated protein kinase)-mTOR (mammalian target of rapamycin) mitochondrial reactive oxygen species and HIF-1α (hypoxia-inducible factor-1α) pathway. In both of uricase transgenic and xanthine oxidase inhibitor-treated mice, decreased levels of uric acid resulted in the activation of AMPK and attenuation of the development of atherosclerotic plaques. Further, acute uric acid reduction by the administration of benzbromarone in healthy humans for 2 weeks significantly decreased plasma IL-18-an inflammasome-dependent cytokine. CONCLUSIONS The data indicate that the development of atherosclerosis and inflammation is promoted by uric acid in vivo. Moreover, the lowering of uric acid levels attenuated inflammation via the activation of the AMPK pathway. This study provides mechanistic evidence of uric acid-lowering therapies for atherosclerosis.
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Affiliation(s)
- Yoshitaka Kimura
- From the Department of Internal Medicine, Faculty of Medicine (Y.K., T.Y., A.O., D.T., H.K.), Teikyo University, Tokyo, Japan
| | - Tamiko Yanagida
- From the Department of Internal Medicine, Faculty of Medicine (Y.K., T.Y., A.O., D.T., H.K.), Teikyo University, Tokyo, Japan
| | - Akiko Onda
- From the Department of Internal Medicine, Faculty of Medicine (Y.K., T.Y., A.O., D.T., H.K.), Teikyo University, Tokyo, Japan
| | - Daisuke Tsukui
- From the Department of Internal Medicine, Faculty of Medicine (Y.K., T.Y., A.O., D.T., H.K.), Teikyo University, Tokyo, Japan
| | - Makoto Hosoyamada
- Department of Human Physiology and Pathology, Faculty of Pharma-Sciences (M.H.), Teikyo University, Tokyo, Japan
| | - Hajime Kono
- From the Department of Internal Medicine, Faculty of Medicine (Y.K., T.Y., A.O., D.T., H.K.), Teikyo University, Tokyo, Japan
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6
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Lu J, Sun M, Wu X, Yuan X, Liu Z, Qu X, Ji X, Merriman TR, Li C. Urate-lowering therapy alleviates atherosclerosis inflammatory response factors and neointimal lesions in a mouse model of induced carotid atherosclerosis. FEBS J 2019; 286:1346-1359. [PMID: 30690853 PMCID: PMC6849826 DOI: 10.1111/febs.14768] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 11/10/2018] [Accepted: 01/23/2019] [Indexed: 12/18/2022]
Abstract
Hyperuricemia (HU) is a cause of gout. Clinical studies show a link between HU and cardiovascular disease. However, the role of soluble serum urate (SU) on atherosclerosis development remains elusive. We aimed to use a new HU mouse model [Uricase/Uox knockout (KO)] to further investigate the relationship between HU and atherosclerosis. A mouse model by perivascular collar placement of induced carotid atherosclerosis was established in male Uox-KO mice. The Uox-KO mice had elevated SU levels and enhanced levels of atherosclerosis inflammatory response proteins. In contrast, Uox-KO mice with carotid atherosclerosis showed severe neointimal changes in histology staining consistent with increases in intimal area and increases in proliferating cell nuclear antigen (PCNA)- and F4/80-positive cells. Allopurinol reduced neointimal areas induced by the perivascular collar in hyperuricemic mice, accompanied by decreased expression of PCNA- and F4/80-positive cells. Urate-lowering treatment alleviated atherosclerosis inflammatory response factors and reactive oxygen species (ROS) intensities in both collar placement Uox-KO mice and urate-stimulated human umbilical vein endothelial cells (HUVECs). In vitro results using HUVECs showed ROS was induced by urate and ROS induction was abrogated using antioxidants. These data demonstrate that urate per se does not trigger atherosclerosis intima lesions in male mice. Urate worsens carotid neointimal lesions induced by the perivascular collar and urate-lowering therapy partially abrogates the effects. The current study warrants clinical studies on the possible benefits of urate-lowering therapy in atherosclerosis patients with HU.
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Affiliation(s)
- Jie Lu
- Institute of Metabolic Diseases, Qingdao University, China.,Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, China.,Department of Endocrinology and Metabolic Diseases, The Affiliated Hospital of Qingdao University, China
| | - Mingshu Sun
- Institute of Metabolic Diseases, Qingdao University, China.,Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, China.,Department of Rheumatology and Clinical Immunology, The Affiliated Hospital of Qingdao University, China
| | - Xinjiang Wu
- Institute of Metabolic Diseases, Qingdao University, China
| | - Xuan Yuan
- Institute of Metabolic Diseases, Qingdao University, China
| | - Zhen Liu
- Institute of Metabolic Diseases, Qingdao University, China.,Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, China
| | - Xiaojie Qu
- Institute of Metabolic Diseases, Qingdao University, China.,Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, China.,Department of Endocrinology and Metabolic Diseases, The Affiliated Hospital of Qingdao University, China
| | - Xiaopeng Ji
- Institute of Metabolic Diseases, Qingdao University, China.,Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, China
| | - Tony R Merriman
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
| | - Changgui Li
- Institute of Metabolic Diseases, Qingdao University, China.,Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, China.,Department of Endocrinology and Metabolic Diseases, The Affiliated Hospital of Qingdao University, China
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7
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Zuo J, He H, Zuo Z, Bou-Chacra N, Löbenberg R. Erding Formula in hyperuricaemia treatment: unfolding traditional Chinese herbal compatibility using modern pharmaceutical approaches. J Pharm Pharmacol 2017; 70:124-132. [DOI: 10.1111/jphp.12840] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 09/30/2017] [Indexed: 11/27/2022]
Abstract
Abstract
Objectives
Traditional Chinese herbal formulas are difficult to be understood because of complex compositions and specific therapeutic principles. To better understand herbal compatibility in Traditional Chinese medicine (TCM), this study was conducted to investigate the effects of a Chinese pharmacopoeia-listed formula, Erding Formula (EF) and its constituent herbs for a new indication, hyperuricaemia.
Methods
A hypoxanthine and potassium oxonate-induced hyperuricemic mouse model, a xylene-induced inflammatory mouse model and an acetic acid-induced pain model were used to test the effects of EF and its constituent herbs. In addition, we investigated whether EF and/or its relevant herbs had an impact on the expression of URAT1 and OAT3 mRNA.
Key findings
The results showed EF and individual herbs had pharmacological effects on selected targets. Only Viola yedoensis Makino (Viola) lowered uric acid levels, while all four herbs had anti-inflammatory and analgesic effects. The EF may lower the uric acid level through inhibiting the expression of URAT1 mRNA and enhancing the expression of OAT3 mRNA.
Conclusions
These findings provide pharmacological insights into the effects of EF and individual herbs on UA excretion. This study suggests that Viola is the main herb in EF. This study facilitates better understanding of TCM principles and theories using modern pharmaceutical approaches.
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Affiliation(s)
- Jieyu Zuo
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB, Canada
| | - Hongming He
- Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Zhengyun Zuo
- Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Nádia Bou-Chacra
- Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, SP, Brazil
| | - Raimar Löbenberg
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB, Canada
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8
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Chen Y, Chen XL, Xiang T, Sun BG, Luo HX, Liu MT, Chen ZX, Zhang SJ, Wang CJ. Total saponins from dioscorea septemloba thunb reduce serum uric acid levels in rats with hyperuricemia through OATP1A1 up-regulation. ACTA ACUST UNITED AC 2016; 36:237-242. [DOI: 10.1007/s11596-016-1573-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 02/25/2016] [Indexed: 11/30/2022]
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9
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Salvayre R, Negre-Salvayre A, Camaré C. Oxidative theory of atherosclerosis and antioxidants. Biochimie 2015; 125:281-96. [PMID: 26717905 DOI: 10.1016/j.biochi.2015.12.014] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 12/18/2015] [Indexed: 02/02/2023]
Abstract
Atherosclerosis is a multifactorial process that begins early in infancy and affects all the humans. Early steps of atherogenesis and the evolution towards complex atherosclerotic plaques are briefly described. After a brief history of the 'Lipid theory of atherosclerosis', we report the most prominent discoveries on lipoproteins, their receptors and metabolism, and their role in atherogenesis. The main focus is the 'oxidative theory of atherosclerosis', with emphasis on free radicals and reactive oxygen species, lipid peroxidation and LDL oxidation, biological properties of oxidized LDL and their potential role in atherogenesis. Then, we report the properties of antioxidants and antioxidant systems and their effects in vitro, on cultured cells, in animal models and in humans. The surprising discrepancy between the efficacy of antioxidants in vitro and in animal models of atherosclerosis and the lack of protective effect against cardiovascular events and death in epidemiological study and clinical trials are discussed. In contrast, epidemiological studies seem to indicate that the Mediterranean diet may protect (in part) against atherosclerosis complications (myocardial infarction and cardiovascular death).
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Affiliation(s)
- R Salvayre
- Inserm UMR-1048, BP84225, 31432 Toulouse Cedex 4, France; Biochemistry, Faculty of Medicine Toulouse-Rangueil, University of Toulouse, France; CHU Rangueil, Avenue Jean Poulhès, Toulouse, France.
| | | | - C Camaré
- Inserm UMR-1048, BP84225, 31432 Toulouse Cedex 4, France; Biochemistry, Faculty of Medicine Toulouse-Rangueil, University of Toulouse, France; CHU Rangueil, Avenue Jean Poulhès, Toulouse, France
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10
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The relationship between the level of mean platelet volume and the carotid artery intima-media thickness in patients with type 2 diabetes mellitus. Int J Diabetes Dev Ctries 2015. [DOI: 10.1007/s13410-015-0426-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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