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Zhang F, Zhu G, Li Y, Qi Y, Wang Z, Li W. Dual-target inhibitors based on COX-2: a review from medicinal chemistry perspectives. Future Med Chem 2023; 15:2209-2233. [PMID: 38095081 DOI: 10.4155/fmc-2023-0192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Accepted: 11/08/2023] [Indexed: 12/20/2023] Open
Abstract
Inhibitors of COX-2 constitute a class of anti-inflammatory analgesics, showing potential against certain types of cancer. However, such inhibitors are associated with cardiovascular toxicity. Moreover, although single-target molecules possess specificity for particular targets, they often lead to poor safety, low efficacy and drug resistance due to compensatory mechanisms. A new generation of dual-target drugs that simultaneously inhibit COX-2 and another target is showing strong potential to treat cancer or reduce adverse cardiac effects. The present perspective focuses on the structure and functions of COX-2, and its role as a therapeutic target. It also explores the current state and future possibilities for dual-target strategies from a medicinal chemistry perspective.
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Affiliation(s)
- Fengmei Zhang
- Department of Pulmonary & Critical Care Medicine, Institute of Respiratory Health, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
- State Key Laboratory of Respiratory Health & Multimorbidity, West China Hospital, Chengdu, 610041, Sichuan, China
| | - Guonian Zhu
- Department of Pulmonary & Critical Care Medicine, Institute of Respiratory Health, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
- State Key Laboratory of Respiratory Health & Multimorbidity, West China Hospital, Chengdu, 610041, Sichuan, China
| | - Yangqian Li
- Department of Pulmonary & Critical Care Medicine, Institute of Respiratory Health, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
- State Key Laboratory of Respiratory Health & Multimorbidity, West China Hospital, Chengdu, 610041, Sichuan, China
| | - Yawen Qi
- Department of Pulmonary & Critical Care Medicine, Institute of Respiratory Health, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
- State Key Laboratory of Respiratory Health & Multimorbidity, West China Hospital, Chengdu, 610041, Sichuan, China
| | - Zhoufeng Wang
- Department of Pulmonary & Critical Care Medicine, Institute of Respiratory Health, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
- State Key Laboratory of Respiratory Health & Multimorbidity, West China Hospital, Chengdu, 610041, Sichuan, China
- Precision Medicine Center, Precision Medicine Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
- The Research Units of West China, Chinese Academy of Medical Sciences, West China Hospital, Chengdu, 610041, Sichuan, China
| | - Weimin Li
- Department of Pulmonary & Critical Care Medicine, Institute of Respiratory Health, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
- State Key Laboratory of Respiratory Health & Multimorbidity, West China Hospital, Chengdu, 610041, Sichuan, China
- Precision Medicine Center, Precision Medicine Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
- The Research Units of West China, Chinese Academy of Medical Sciences, West China Hospital, Chengdu, 610041, Sichuan, China
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Zhao C, Jiang X, Peng L, Zhang Y, Li H, Zhang Q, Wang Y, Yang F, Wu J, Wen Z, He Z, Shen J, Chen C, Wang DW. Glimepiride, a novel soluble epoxide hydrolase inhibitor, protects against heart failure via increasing epoxyeicosatrienoic acids. J Mol Cell Cardiol 2023; 185:13-25. [PMID: 37871528 DOI: 10.1016/j.yjmcc.2023.10.009] [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: 06/02/2023] [Revised: 10/11/2023] [Accepted: 10/12/2023] [Indexed: 10/25/2023]
Abstract
BACKGROUND Epoxyeicosatrienoic acids (EETs), which exert multiple endogenous protective effects, are hydrolyzed into less active dihydroxyeicosatrienoic acids (DHETs) by soluble epoxide hydrolase (sEH). However, commercial drugs related to EETs or sEH are not yet in clinical use. METHODS Firstly, the plasma concentration of EETs and DHETs of 316 patients with heart failure (HF) were detected and quantitated by liquid chromatography-tandem mass spectrometry. Then, transverse aortic constriction (TAC)-induced HF was introduced in cardiomyocyte-specific Ephx2-/- mice. Moreover, Western blot, real-time PCR, luciferase reporter, ChIP assays were employed to explore the underlying mechanism. Finally, multiple sEH inhibitors were designed, synthesized, and validated in vitro and in vivo. RESULTS The ratios of DHETs/EETs were increased in the plasma from patients with HF. Meanwhile, the expression of sEH was upregulated in the heart of patients and mice with HF, especially in cardiomyocytes. Cardiomyocyte-specific Ephx2-/- mice ameliorated cardiac dysfunction induced by TAC. Consistently, Ephx2 knockdown protected Angiotensin II (AngII)-treated cardiomyocytes via increasing EETs in vitro. Mechanistically, AngII could enhance the expression of transcript factor Krüppel-like factor 15 (KLF15), which in turn upregulated sEH. Importantly, glimepiride was identified as a novel sEH inhibitor, which benefited from the elevated EETs during HF. CONCLUSIONS Glimepiride attenuates HF in mice in part by increasing EETs. CLINICAL TRIAL IDENTIFIER NCT03461107 (https://clinicaltrials.gov).
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Affiliation(s)
- Chengcheng Zhao
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Xiangrui Jiang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai, China.
| | - Liyuan Peng
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Yan Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Huihui Li
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Qiumeng Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Yinhui Wang
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Feipu Yang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Junfang Wu
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Zheng Wen
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Zuowen He
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Jingshan Shen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
| | - Chen Chen
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China.
| | - Dao Wen Wang
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China.
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3
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Huang P. Research progress on the protective mechanism of a novel soluble epoxide hydrolase inhibitor TPPU on ischemic stroke. Front Neurol 2023; 14:1083972. [PMID: 36846137 PMCID: PMC9945277 DOI: 10.3389/fneur.2023.1083972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 01/20/2023] [Indexed: 02/11/2023] Open
Abstract
Arachidonic Acid (AA) is the precursor of cerebrovascular active substances in the human body, and its metabolites are closely associated with the pathogenesis of cerebrovascular diseases. In recent years, the cytochrome P450 (CYP) metabolic pathway of AA has become a research hotspot. Furthermore, the CYP metabolic pathway of AA is regulated by soluble epoxide hydrolase (sEH). 1-trifluoromethoxyphenyl-3(1-propionylpiperidin-4-yl) urea (TPPU) is a novel sEH inhibitor that exerts cerebrovascular protective activity. This article reviews the mechanism of TPPU's protective effect on ischemic stroke disease.
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Cho C, Aliwarga T, Wiley AM, Totah RA. Cardioprotective mechanisms of cytochrome P450 derived oxylipins from ω-3 and ω-6 PUFAs. ADVANCES IN PHARMACOLOGY 2023; 97:201-227. [DOI: 10.1016/bs.apha.2023.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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Charles R, Eaton P. Redox Regulation of Soluble Epoxide Hydrolase-Implications for Cardiovascular Health and Disease. Cells 2022; 11:cells11121932. [PMID: 35741062 PMCID: PMC9221603 DOI: 10.3390/cells11121932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/10/2022] [Accepted: 06/13/2022] [Indexed: 12/25/2022] Open
Abstract
Cell responses to changes in their redox state are significantly mediated by reversible oxido-reductive post-translational modifications of proteins, potentially altering their activities or interactions. These modifications are important for the homeostatic responses of cells to environmental changes that alter their redox state. Such redox regulatory mechanisms not only operate to maintain health, but can become dysregulated and contribute to pathophysiology. In this review, we focus on the redox control of soluble epoxide hydrolase (sEH), which is widely expressed, including in blood vessels and cardiomyocytes. We review the different types of oxidative modifications that regulate sEH and how they may alter cardiovascular physiology and affect disease progression during stress.
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Khotimchenko M, Brunk NE, Hixon MS, Walden DM, Hou H, Chakravarty K, Varshney J. In Silico Development of Combinatorial Therapeutic Approaches Targeting Key Signaling Pathways in Metabolic Syndrome. Pharm Res 2022; 39:2937-2950. [PMID: 35313359 DOI: 10.1007/s11095-022-03231-z] [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: 01/03/2022] [Accepted: 03/10/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE Dysregulations of key signaling pathways in metabolic syndrome are multifactorial, eventually leading to cardiovascular events. Hyperglycemia in conjunction with dyslipidemia induces insulin resistance and provokes release of proinflammatory cytokines resulting in chronic inflammation, accelerated lipid peroxidation with further development of atherosclerotic alterations and diabetes. We have proposed a novel combinatorial approach using FDA approved compounds targeting IL-17a and DPP4 to ameliorate a significant portion of the clustered clinical risks in patients with metabolic syndrome. In our current research we have modeled the outcomes of metabolic syndrome treatment using two distinct drug classes. METHODS Targets were chosen based on the clustered clinical risks in metabolic syndrome: dyslipidemia, insulin resistance, impaired glucose control, and chronic inflammation. Drug development platform, BIOiSIM™, was used to narrow down two different drug classes with distinct modes of action and modalities. Pharmacokinetic and pharmacodynamic profiles of the most promising drugs were modeling showing predicted outcomes of combinatorial therapeutic interventions. RESULTS Preliminary studies demonstrated that the most promising drugs belong to DPP-4 inhibitors and IL-17A inhibitors. Evogliptin was chosen to be a candidate for regulating glucose control with long term collateral benefit of weight loss and improved lipid profiles. Secukinumab, an IL-17A sequestering agent used in treating psoriasis, was selected as a repurposed candidate to address the sequential inflammatory disorders that follow the first metabolic insult. CONCLUSIONS Our analysis suggests this novel combinatorial therapeutic approach inducing DPP4 and Il-17a suppression has a high likelihood of ameliorating a significant portion of the clustered clinical risk in metabolic syndrome.
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Affiliation(s)
- Maksim Khotimchenko
- VeriSIM Life, 1 Sansome Street, Suite 3500, San Francisco, California, 94104, USA
| | - Nicholas E Brunk
- VeriSIM Life, 1 Sansome Street, Suite 3500, San Francisco, California, 94104, USA
| | - Mark S Hixon
- VeriSIM Life, 1 Sansome Street, Suite 3500, San Francisco, California, 94104, USA
| | - Daniel M Walden
- VeriSIM Life, 1 Sansome Street, Suite 3500, San Francisco, California, 94104, USA
| | - Hypatia Hou
- VeriSIM Life, 1 Sansome Street, Suite 3500, San Francisco, California, 94104, USA
| | - Kaushik Chakravarty
- VeriSIM Life, 1 Sansome Street, Suite 3500, San Francisco, California, 94104, USA.
| | - Jyotika Varshney
- VeriSIM Life, 1 Sansome Street, Suite 3500, San Francisco, California, 94104, USA.
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Charles RL, Abis G, Fernandez BF, Guttzeit S, Buccafusca R, Conte MR, Eaton P. A thiol redox sensor in soluble epoxide hydrolase enables oxidative activation by intra-protein disulfide bond formation. Redox Biol 2021; 46:102107. [PMID: 34509915 PMCID: PMC8436062 DOI: 10.1016/j.redox.2021.102107] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/12/2021] [Accepted: 08/13/2021] [Indexed: 11/30/2022] Open
Abstract
Soluble epoxide hydrolase (sEH), an enzyme that broadly regulates the cardiovascular system, hydrolyses epoxyeicosatrienoic acids (EETs) to their corresponding dihydroxyeicosatrienoic acids (DHETs). We previously showed that endogenous lipid electrophiles adduct within the catalytic domain, inhibiting sEH to lower blood pressure in angiotensin II-induced hypertensive mice. As angiotensin II increases vascular H2O2, we explored sEH redox regulation by this oxidant and how this integrates with inhibition by lipid electrophiles to regulate vasotone. Kinetics analyses revealed that H2O2 not only increased the specific activity of sEH but increased its affinity for substrate and increased its catalytic efficiency. This oxidative activation was mediated by formation of an intra-disulfide bond between C262 and C264, as determined by mass spectrometry and substantiated by biotin-phenylarsinate and thioredoxin-trapping mutant assays. C262S/264S sEH mutants were resistant to peroxide-induced activation, corroborating the disulfide-activation mechanism. The physiological impact of sEH redox state was determined in isolated arteries and the effect of the pro-oxidant vasopressor angiotensin II on arterial sEH redox state and vasodilatory EETs indexed in mice. Angiotensin II induced the activating intra-disulfide in sEH, causing a decrease in plasma EET/DHET ratios that is consistent with the pressor response to this hormone. Although sEH C262-C264 disulfide formation enhances hydrolysis of vasodilatory EETs, this modification also sensitized sEH to inhibition by lipid electrophiles. This explains why angiotensin II decreases EETs and increases blood pressure, but when lipid electrophiles are also present, that EETs are increased and blood pressure lowered.
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Affiliation(s)
- Rebecca L Charles
- Queen Mary University of London, William Harvey Research Institute, Charterhouse Square, London, EC1M 6BQ, UK
| | - Giancarlo Abis
- King's College London, Randall Centre for Cell and Molecular Biophysics, School of Basic and Medical Biosciences, London, SE1 1UL, UK
| | - Beatriz F Fernandez
- King's College London, The British Heart Foundation Centre of Excellence, The Rayne Institute, St Thomas' Hospital, London, SE1 7EH, UK
| | - Sebastian Guttzeit
- King's College London, The British Heart Foundation Centre of Excellence, The Rayne Institute, St Thomas' Hospital, London, SE1 7EH, UK
| | - Roberto Buccafusca
- Queen Mary University of London, School of Biological and Chemical Sciences, Mile End Road, London, E1 4NS, UK
| | - Maria R Conte
- King's College London, Randall Centre for Cell and Molecular Biophysics, School of Basic and Medical Biosciences, London, SE1 1UL, UK.
| | - Philip Eaton
- Queen Mary University of London, William Harvey Research Institute, Charterhouse Square, London, EC1M 6BQ, UK.
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McClung JA, Levy L, Garcia V, Stec DE, Peterson SJ, Abraham NG. Heme-oxygenase and lipid mediators in obesity and associated cardiometabolic diseases: Therapeutic implications. Pharmacol Ther 2021; 231:107975. [PMID: 34499923 DOI: 10.1016/j.pharmthera.2021.107975] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 07/08/2021] [Accepted: 07/27/2021] [Indexed: 02/08/2023]
Abstract
Obesity-mediated metabolic syndrome remains the leading cause of death worldwide. Among many potential targets for pharmacological intervention, a promising strategy involves the heme oxygenase (HO) system, specifically its inducible form, HO-1. This review collects and updates much of the current knowledge relevant to pharmacology and clinical medicine concerning HO-1 in metabolic diseases and its effect on lipid metabolism. HO-1 has pleotropic effects that collectively reduce inflammation, while increasing vasodilation and insulin and leptin sensitivity. Recent reports indicate that HO-1 with its antioxidants via the effect of bilirubin increases formation of biologically active lipid metabolites such as epoxyeicosatrienoic acid (EET), omega-3 and other polyunsaturated fatty acids (PUFAs). Similarly, HO-1and bilirubin are potential therapeutic targets in the treatment of fat-induced liver diseases. HO-1-mediated upregulation of EET is capable not only of reversing endothelial dysfunction and hypertension, but also of reversing cardiac remodeling, a hallmark of the metabolic syndrome. This process involves browning of white fat tissue (i.e. formation of healthy adipocytes) and reduced lipotoxicity, which otherwise will be toxic to the heart. More importantly, this review examines the activity of EET in biological systems and a series of pathways that explain its mechanism of action and discusses how these might be exploited for potential therapeutic use. We also discuss the link between cardiac ectopic fat deposition and cardiac function in humans, which is similar to that described in obese mice and is regulated by HO-1-EET-PGC1α signaling, a potent negative regulator of the inflammatory adipokine NOV.
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Affiliation(s)
- John A McClung
- Department of Medicine, New York Medical College, Valhalla, NY 10595, United States of America
| | - Lior Levy
- Department of Medicine, New York Medical College, Valhalla, NY 10595, United States of America
| | - Victor Garcia
- Department of Pharmacology, New York Medical College, Valhalla, NY 10595, United States of America
| | - David E Stec
- Department of Physiology and Biophysics, Cardiorenal and Metabolic Diseases Research Center, University of Mississippi Medical Center, Jackson, MS 39216, United States of America.
| | - Stephen J Peterson
- Department of Medicine, Weill Cornell Medicine, New York, NY 10065, United States of America; New York Presbyterian Brooklyn Methodist Hospital, Brooklyn, NY 11215, United States of America
| | - Nader G Abraham
- Department of Medicine, New York Medical College, Valhalla, NY 10595, United States of America; Department of Pharmacology, New York Medical College, Valhalla, NY 10595, United States of America.
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Wang HL, Chen JW, Yang SH, Lo YC, Pan HC, Liang YW, Wang CF, Yang Y, Kuo YT, Lin YC, Chou CY, Lin SH, Chen YY. Multimodal Optical Imaging to Investigate Spatiotemporal Changes in Cerebrovascular Function in AUDA Treatment of Acute Ischemic Stroke. Front Cell Neurosci 2021; 15:655305. [PMID: 34149359 PMCID: PMC8209306 DOI: 10.3389/fncel.2021.655305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 05/10/2021] [Indexed: 01/03/2023] Open
Abstract
Administration of 12-(3-adamantan-1-yl-ureido)-dodecanoic acid (AUDA) has been demonstrated to alleviate infarction following ischemic stroke. Reportedly, the main effect of AUDA is exerting anti-inflammation and neovascularization via the inhibition of soluble epoxide hydrolase. However, the major contribution of this anti-inflammation and neovascularization effect in the acute phase of stroke is not completely elucidated. To investigate the neuroprotective effects of AUDA in acute ischemic stroke, we combined laser speckle contrast imaging and optical intrinsic signal imaging techniques with the implantation of a lab-designed cranial window. Forepaw stimulation was applied to assess the functional changes via measuring cerebral metabolic rate of oxygen (CMRO2) that accompany neural activity. The rats that received AUDA in the acute phase of photothrombotic ischemia stroke showed a 30.5 ± 8.1% reduction in the ischemic core, 42.3 ± 15.1% reduction in the ischemic penumbra (p < 0.05), and 42.1 ± 4.6% increase of CMRO2 in response to forepaw stimulation at post-stroke day 1 (p < 0.05) compared with the control group (N = 10 for each group). Moreover, at post-stroke day 3, increased functional vascular density was observed in AUDA-treated rats (35.9 ± 1.9% higher than that in the control group, p < 0.05). At post-stroke day 7, a 105.4% ± 16.4% increase of astrocytes (p < 0.01), 30.0 ± 10.9% increase of neurons (p < 0.01), and 65.5 ± 15.0% decrease of microglia (p < 0.01) were observed in the penumbra region in AUDA-treated rats (N = 5 for each group). These results suggested that AUDA affects the anti-inflammation at the beginning of ischemic injury and restores neuronal metabolic rate of O2 and tissue viability. The neovascularization triggered by AUDA restored CBF and may contribute to ischemic infarction reduction at post-stroke day 3. Moreover, for long-term neuroprotection, astrocytes in the penumbra region may play an important role in protecting neurons from apoptotic injury.
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Affiliation(s)
- Han-Lin Wang
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Jia-Wei Chen
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Shih-Hung Yang
- Department of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Chun Lo
- The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Han-Chi Pan
- National Laboratory Animal Center, Taipei, Taiwan
| | - Yao-Wen Liang
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Ching-Fu Wang
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Yi Yang
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Yun-Ting Kuo
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Yi-Chen Lin
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chin-Yu Chou
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Sheng-Huang Lin
- Department of Neurology, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan.,Department of Neurology, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - You-Yin Chen
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan.,The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
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In Vitro and In Silico Studies of Soluble Epoxide Hydrolase Inhibitors from the Roots of Lycopus lucidus. PLANTS 2021; 10:plants10020356. [PMID: 33668538 PMCID: PMC7917821 DOI: 10.3390/plants10020356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 02/09/2021] [Accepted: 02/09/2021] [Indexed: 11/28/2022]
Abstract
Soluble epoxide hydrolase (sEH) is an enzyme that is considered a potential therapeutic target in human cardiovascular disease. Triterpenes (1–4) and phenylpropanoids (5–10) were isolated from Lycopus lucidus to obtain sEH inhibitors through various chromatographic purificationtechniques. The isolated compounds were evaluated for their inhibitory activity against sEH, and methyl rosmarinate (7), martynoside (8), dimethyl lithospermate (9) and 9″ methyl lithospermate (10) showed remarkable inhibitory activity, with the IC50 values ranging from 10.6 ± 3.2 to 35.7 ± 2.1 µM. Kinetic analysis of these compounds revealed that 7, 9 and 10 were competitive inhibitors bound to the active site, and 8 was the preferred mixed type inhibitor for allosteric sites. Additionally, molecular modeling has identified interacting catalytic residues and bindings between sEH and inhibitors. The results suggest that these compounds are potential candidates that can be used for further development in the prevention and treatment for cardiovascular risk.
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Sun CP, Zhang XY, Morisseau C, Hwang SH, Zhang ZJ, Hammock BD, Ma XC. Discovery of Soluble Epoxide Hydrolase Inhibitors from Chemical Synthesis and Natural Products. J Med Chem 2020; 64:184-215. [PMID: 33369424 DOI: 10.1021/acs.jmedchem.0c01507] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Soluble epoxide hydrolase (sEH) is an α/β hydrolase fold protein and widely distributed in numerous organs including the liver, kidney, and brain. The inhibition of sEH can effectively maintain endogenous epoxyeicosatrienoic acids (EETs) levels and reduce dihydroxyeicosatrienoic acids (DHETs) levels, resulting in therapeutic potentials for cardiovascular, central nervous system, and metabolic diseases. Therefore, since the beginning of this century, the development of sEH inhibitors is a hot research topic. A variety of potent sEH inhibitors have been developed by chemical synthesis or isolated from natural sources. In this review, we mainly summarized the interconnected aspects of sEH with cardiovascular, central nervous system, and metabolic diseases and then focus on representative inhibitors, which would provide some useful guidance for the future development of potential sEH inhibitors.
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Affiliation(s)
- Cheng-Peng Sun
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College (Institute) of Integrative Medicine, College of Pharmacy, Dalian Medical University, Dalian 116044, People's Republic of China
| | - Xin-Yue Zhang
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College (Institute) of Integrative Medicine, College of Pharmacy, Dalian Medical University, Dalian 116044, People's Republic of China
| | - Christophe Morisseau
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Sung Hee Hwang
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Zhan-Jun Zhang
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Bruce D Hammock
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Xiao-Chi Ma
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College (Institute) of Integrative Medicine, College of Pharmacy, Dalian Medical University, Dalian 116044, People's Republic of China.,College of Pharmacy, School of Medicine, Hangzhou Normal University, Hangzhou 311121, People's Republic of China
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Hildreth K, Kodani SD, Hammock BD, Zhao L. Cytochrome P450-derived linoleic acid metabolites EpOMEs and DiHOMEs: a review of recent studies. J Nutr Biochem 2020; 86:108484. [PMID: 32827665 PMCID: PMC7606796 DOI: 10.1016/j.jnutbio.2020.108484] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 06/24/2020] [Accepted: 08/13/2020] [Indexed: 12/29/2022]
Abstract
Linoleic acid (LA) is the most abundant polyunsaturated fatty acid found in the Western diet. Cytochrome P450-derived LA metabolites 9,10-epoxyoctadecenoic acid (9,10-EpOME), 12,13-epoxyoctadecenoic acid (12,13-EpOME), 9,10-dihydroxy-12Z-octadecenoic acid (9,10-DiHOME) and 12,13-dihydroxy-9Z-octadecenoic acid (12,13-DiHOME) have been studied for their association with various disease states and biological functions. Previous studies of the EpOMEs and DiHOMEs have focused on their roles in cytotoxic processes, primarily in the inhibition of the neutrophil respiratory burst. More recent research has suggested the DiHOMEs may be important lipid mediators in pain perception, altered immune response and brown adipose tissue activation by cold and exercise. The purpose of this review is to summarize the current understanding of the physiological and pathophysiological roles and modes of action of the EpOMEs and DiHOMEs in health and disease.
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Affiliation(s)
- Kelsey Hildreth
- Department of Nutrition, University of Tennessee, Knoxville, TN
| | - Sean D Kodani
- Department of Entomology and Nematology and UC Davis Comprehensive Cancer Center, University of California, Davis, CA
| | - Bruce D Hammock
- Department of Entomology and Nematology and UC Davis Comprehensive Cancer Center, University of California, Davis, CA
| | - Ling Zhao
- Department of Nutrition, University of Tennessee, Knoxville, TN.
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Association of Epoxide Hydrolase 2 Gene Arg287Gln with the Risk for Primary Hypertension in Chinese. Int J Hypertens 2020; 2020:2351547. [PMID: 32181010 PMCID: PMC7064850 DOI: 10.1155/2020/2351547] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 01/18/2020] [Indexed: 01/11/2023] Open
Abstract
Background Epoxide hydrolase 2 (EPHX2) gene coding for soluble epoxide hydrolase is a potential candidate in the pathogenesis of hypertension. Objectives We aimed to assess the association of a missense mutation, R287Q, in EPHX2) gene coding for soluble epoxide hydrolase is a potential candidate in the pathogenesis of hypertension. Methods This study involved 782 patients with primary hypertension and 458 healthy controls. Genotyping was done using TaqMan technique. Activity of soluble epoxide hydrolase fusion proteins was evaluated by the conversion of 11,12-EET to corresponding 11,12-DHET using ELISA kit. Results After taking carriers of R287Q variant GG genotype as a reference, those with GA genotype had a significantly reduced risk of hypertension (adjusted odds ratio: 0.72, 95% confidence interval: 0.56 to 0.93, P = 0.013). Five significant risk factors were identified, including age, body mass index, total cholesterol, homocysteine, and R287Q variant. These five risk factors for hypertension were represented in a nomogram, with a descent prediction accuracy (C-index: 0.833, P = 0.013). Five significant risk factors were identified, including age, body mass index, total cholesterol, homocysteine, and R287Q variant. These five risk factors for hypertension were represented in a nomogram, with a descent prediction accuracy (C-index: 0.833, Conclusions We provide evidence that R287Q mutation in EPHX2 gene was associated with reduced risk of primary hypertension and low activity of soluble epoxide hydrolase.EPHX2) gene coding for soluble epoxide hydrolase is a potential candidate in the pathogenesis of hypertension.
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Jamieson KL, Keshavarz-Bahaghighat H, Darwesh AM, Sosnowski DK, Seubert JM. Age and Sex Differences in Hearts of Soluble Epoxide Hydrolase Null Mice. Front Physiol 2020; 11:48. [PMID: 32116760 PMCID: PMC7019103 DOI: 10.3389/fphys.2020.00048] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 01/21/2020] [Indexed: 12/19/2022] Open
Abstract
Biological aging is an inevitable part of life that has intrigued individuals for millennia. The progressive decline in biological systems impacts cardiac function and increases vulnerability to stress contributing to morbidity and mortality in aged individuals. Yet, our understanding of the molecular, biochemical and physiological mechanisms of aging as well as sex differences is limited. There is growing evidence indicating CYP450 epoxygenase-mediated metabolites of n-3 and n-6 polyunsaturated fatty acids (PUFAs) are active lipid mediators regulating cardiac homeostasis. These epoxy metabolites are rapidly hydrolyzed and inactivated by the soluble epoxide hydrolase (sEH). The current study characterized cardiac function in young and aged sEH null mice compared to the corresponding wild-type (WT) mice. All aged mice had significantly increased cardiac hypertrophy, except in aged female sEH null mice. Cardiac function as assessed by echocardiography demonstrated a marked decline in aged WT mice, notably significant decreases in ejection fraction and fractional shortening in both sexes. Interestingly, aged female sEH null mice had preserved systolic function, while aged male sEH null mice had preserved diastolic function compared to aged WT mice. Assessment of cardiac mitochondria demonstrated an increased expression of acetyl Mn-SOD levels that correlated with decreased Sirt-3 activity in aged WT males and females. Conversely, aged sEH null mice had preserved Sirt-3 activity and better mitochondrial ultrastructure compared to WT mice. Consistent with these changes, the activity level of SOD significantly decreased in WT animals but was preserved in aged sEH null animals. Markers of oxidative stress demonstrated age-related increase in protein carbonyl levels in WT and sEH null male mice. Together, these data highlight novel cardiac phenotypes from sEH null mice demonstrating a sexual dimorphic pattern of aging in the heart.
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Affiliation(s)
- K Lockhart Jamieson
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB, Canada
| | | | - Ahmed M Darwesh
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB, Canada
| | - Deanna K Sosnowski
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB, Canada
| | - John M Seubert
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB, Canada.,Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
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15
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Genetic Deletion or Pharmacological Inhibition of Soluble Epoxide Hydrolase Ameliorates Cardiac Ischemia/Reperfusion Injury by Attenuating NLRP3 Inflammasome Activation. Int J Mol Sci 2019; 20:ijms20143502. [PMID: 31319469 PMCID: PMC6678157 DOI: 10.3390/ijms20143502] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/12/2019] [Accepted: 07/16/2019] [Indexed: 02/06/2023] Open
Abstract
Activation of the nucleotide-binding oligomerization domain-like receptor (NLR) family pyrin domain containing 3 (NLRP3) inflammasome cascade has a role in the pathogenesis of ischemia/reperfusion (IR) injury. There is growing evidence indicating cytochrome p450 (CYP450)-derived metabolites of n-3 and n-6 polyunsaturated fatty acids (PUFAs) possess both adverse and protective effects in the heart. CYP-derived epoxy metabolites are rapidly hydrolyzed by the soluble epoxide hydrolase (sEH). The current study hypothesized that the cardioprotective effects of inhibiting sEH involves limiting activation of the NLRP3 inflammasome. Isolated hearts from young wild-type (WT) and sEH null mice were perfused in the Langendorff mode with either vehicle or the specific sEH inhibitor t-AUCB. Improved post-ischemic functional recovery and better mitochondrial respiration were observed in both sEH null hearts or WT hearts perfused with t-AUCB. Inhibition of sEH markedly attenuated the activation of the NLRP3 inflammasome complex and limited the mitochondrial localization of the fission protein dynamin-related protein-1 (Drp-1) triggered by IR injury. Cardioprotective effects stemming from the inhibition of sEH included preserved activities of both cytosolic thioredoxin (Trx)-1 and mitochondrial Trx-2 antioxidant enzymes. Together, these data demonstrate that inhibiting sEH imparts cardioprotection against IR injury via maintaining post-ischemic mitochondrial function and attenuating a detrimental innate inflammatory response.
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16
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Minaz N, Razdan R, Hammock BD, Mujwar S, Goswami SK. Impact of diabetes on male sexual function in streptozotocin-induced diabetic rats: Protective role of soluble epoxide hydrolase inhibitor. Biomed Pharmacother 2019; 115:108897. [PMID: 31102913 PMCID: PMC6893866 DOI: 10.1016/j.biopha.2019.108897] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 04/07/2019] [Accepted: 04/17/2019] [Indexed: 12/31/2022] Open
Abstract
Diabetes-induced male sexual dysfunction is associated with endothelial dysfunction. Inhibition of soluble epoxide hydrolase (sEH) is known to improve endothelial function in diabetes. Therefore, we hypothesized that sEH inhibitor (sEHI), [trans-4-{4-[3-(4-trifluoromethoxyphenyl)-ureido]cyclohexyloxy}benzoic acid] / t-TUCB can restore the male sexual function in diabetic rat. After one week of administration of diabetogenic agent STZ (52 mg/kg i.p) injection, diabetic rats were treated with t-TUCB (0.1 and 0.3 mg/kg, p.o) or vehicle for 8 weeks. The sexual behaviour parameters of the animals were evaluated at the end of dosing period. The levels of testosterone and glucose in serum, and sperm were quantified. Effect of treatment on weight of reproductive organs and histopathology of penile tissue was evaluated. Diabetes had a negative effect on male sexual function, weight of sexual organs and production of sperm with a parallel decrease in the level of testosterone. The sEHI, t-TUCB, significantly preserved the sexual function and minimized an increase in the level of blood glucose in diabetic rats. It also prevented a decrease in the level of testosterone and sperm in diabetic rats, in comparison to diabetic control rats. Further, diabetes induced distortion of corpus cavernosum was attenuated by t-TUCB. Based on our findings, sEHI may delay the development of sexual dysfunction in diabetes.
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Affiliation(s)
- Nathani Minaz
- Department of Pharmacology, Al-Ameen College of Pharmacy, Bangalore, Karnataka, India
| | - Rema Razdan
- Department of Pharmacology, Al-Ameen College of Pharmacy, Bangalore, Karnataka, India
| | - Bruce D Hammock
- Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, CA, USA
| | - Somdutt Mujwar
- Institute of Pharmaceutical Research, GLA University, 17km Stone, NH-2, Mathura-Delhi Road P.O. Chaumuhan, Mathura, 281 406, Uttar Pradesh, India
| | - Sumanta Kumar Goswami
- Department of Pharmacology, Al-Ameen College of Pharmacy, Bangalore, Karnataka, India; Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, CA, USA.
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17
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Islam O, Patil P, Goswami SK, Razdan R, Inamdar MN, Rizwan M, Mathew J, Inceoglu B, Stephen Lee KS, Hwang SH, Hammock BD. Inhibitors of soluble epoxide hydrolase minimize ischemia-reperfusion-induced cardiac damage in normal, hypertensive, and diabetic rats. Cardiovasc Ther 2018; 35. [PMID: 28296232 DOI: 10.1111/1755-5922.12259] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 02/12/2017] [Accepted: 03/05/2017] [Indexed: 01/29/2023] Open
Abstract
AIM We designed a study to evaluate the cardioprotective effect of two soluble epoxide hydrolase (sEH) inhibitors, 1-(1-propanoylpiperidin-4-yl)-3-(4-trifluoromethoxy)phenyl)urea (TPPU) and trans-4-{4-[3-(4-trifluoromethoxyphenyl)-ureido]cyclohexyloxy}benzoic acid (t-TUCB), in ischemia-reperfusion (IR) model. METHODS Cardioprotective effects of the sEH inhibitors were evaluated against IR-induced myocardial damage in hearts from normal, hypertensive, and diabetic rats using Langendorff's apparatus. In addition, the effect of sEH inhibitors on endothelial function was evaluated in vitro and ex vivo using isolated rat thoracic aorta. RESULTS Ischemia-reperfusion (IR) increased the myocardial damage in hearts from normal rats. IR-induced myocardial damage was augmented in hearts isolated from hypertensive and diabetic rats. Myocardial damage as evident from increase in the activities of lactate dehydrogenase (LDH) and creatine kinase-MB (CK-MB) in heart perfusate was associated with significant decrease in the heart rate and developed tension, and increase in the resting tension in isolated heart. Both sEH inhibitors protected the heart in normal, hypertensive, and diabetic rats subjected to IR injury. The sEH inhibitor t-TUCB relaxed phenylephrine precontracted aorta from normal rats. Relaxant effect of acetylcholine (ACh) was reduced in aortas from diabetic and hypertensive rats compared to normal rats. Pretreatment of sEH inhibitors to diabetic and hypertensive rats increased relaxant effect of ACh on aortas isolated from these rats. CONCLUSIONS Prophylactic treatment with sEH inhibitors decreased myocardial damage due to IR, hypertension and diabetes, and decreased endothelial dysfunction created by diabetes and hypertension. Therefore, inhibitors of sEH are useful probes to study cardiovascular pathology, and inhibition of the sEH is a potential approach in the management of IR-induced cardiac damage and endothelial dysfunction-related cardiovascular disorders.
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Affiliation(s)
- Oliul Islam
- Department of Pharmacology, Al-Ameen College of Pharmacy, Bangalore, Karnataka, India
| | - Prashanth Patil
- Department of Pharmacology, Al-Ameen College of Pharmacy, Bangalore, Karnataka, India
| | - Sumanta K Goswami
- Department of Pharmacology, Al-Ameen College of Pharmacy, Bangalore, Karnataka, India.,Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, CA, USA
| | - Rema Razdan
- Department of Pharmacology, Al-Ameen College of Pharmacy, Bangalore, Karnataka, India
| | - Mohammed N Inamdar
- Department of Pharmacology, Al-Ameen College of Pharmacy, Bangalore, Karnataka, India.,Department of Pharmacology, College of Pharmacy, Jazan University, Jazan, KSA
| | - Mohammed Rizwan
- Department of Pharmacology, Al-Ameen College of Pharmacy, Bangalore, Karnataka, India
| | - Jubin Mathew
- Department of Pharmacology, Al-Ameen College of Pharmacy, Bangalore, Karnataka, India
| | - Bora Inceoglu
- Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, CA, USA
| | - Kin S Stephen Lee
- Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, CA, USA
| | - Sung H Hwang
- Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, CA, USA
| | - Bruce D Hammock
- Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, CA, USA
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The weakening effect of soluble epoxide hydrolase inhibitor AUDA on febrile response to lipopolysaccharide and turpentine in rat. J Physiol Biochem 2017; 73:551-560. [PMID: 28741242 PMCID: PMC5653702 DOI: 10.1007/s13105-017-0584-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 07/18/2017] [Indexed: 12/27/2022]
Abstract
A still growing body of evidence suggests the importance of epoxyeicosatrienoic acids (EETs) in the regulation of inflammatory response; therefore, drugs that stabilize their levels by targeting the soluble epoxide hydrolase (sEH), an enzyme responsible for their metabolism, are currently under investigation. The effect of sEH inhibitors on molecular components of fever mechanism, i.e., on synthesis of pro-inflammatory cytokines or prostaglandins, has been repeatedly proven; however, the hypothesis that sEH inhibitors affect febrile response has never been tested. The aim of this study was to examine if sEH inhibition affects core body temperature (Tb) as well as Tb changes during febrile response to infectious (lipopolysaccharide; LPS) or non-infectious (turpentine; TRP) stimuli. Male Wistar rats were implanted intra-abdominally with miniature biotelemeters to monitor Tb. A potent sEH inhibitor 12-(3-adamantan-1-yl-ureido)-dodecanoic acid (AUDA) was suspended in olive oil and administrated into animals in the intraperitoneal (i.p.) dose of 15 mg/kg, which, as we showed, has no significant influence on normal Tb. We have found that AUDA injected 3 h after LPS (50 μg/kg i.p.) significantly weakened febrile rise of Tb. Moreover, injection of sEH inhibitor 7 h after turpentine (administrated subcutaneously in a dose of 100 μL/rat) markedly reduced the peak period of aseptic fever. Obtained results provide first experimental evidence that sEH inhibitors possess anti-pyretic properties. Therefore, medicines targeting sEH enzymatic activity should be considered as a complement to the arsenal of topical medications used to treat fever especially in clinical situations when non-steroidal anti-inflammatory drugs are ineffective.
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19
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Epoxyeicosatrienoic Acid as Therapy for Diabetic and Ischemic Cardiomyopathy. Trends Pharmacol Sci 2016; 37:945-962. [DOI: 10.1016/j.tips.2016.08.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 08/12/2016] [Accepted: 08/17/2016] [Indexed: 12/19/2022]
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20
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Qin J, Le Y, Froogh G, Kandhi S, Jiang H, Luo M, Sun D, Huang A. Sexually dimorphic adaptation of cardiac function: roles of epoxyeicosatrienoic acid and peroxisome proliferator-activated receptors. Physiol Rep 2016; 4:4/12/e12838. [PMID: 27354541 PMCID: PMC4923237 DOI: 10.14814/phy2.12838] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 05/27/2016] [Indexed: 01/01/2023] Open
Abstract
Epoxyeicosatrienoic acids (EETs) are cardioprotective mediators metabolized by soluble epoxide hydrolase (sEH) to form corresponding diols (DHETs). As a sex‐susceptible target, sEH is involved in the sexually dimorphic regulation of cardiovascular function. Thus, we hypothesized that the female sex favors EET‐mediated potentiation of cardiac function via downregulation of sEH expression, followed by upregulation of peroxisome proliferator‐activated receptors (PPARs). Hearts were isolated from male (M) and female (F) wild‐type (WT) and sEH‐KO mice, and perfused with constant flow at different preloads. Basal coronary flow required to maintain the perfusion pressure at 100 mmHg was significantly greater in females than males, and sEH‐KO than WT mice. All hearts displayed a dose‐dependent decrease in coronary resistance and increase in cardiac contractility, represented as developed tension in response to increases in preload. These responses were also significantly greater in females than males, and sEH‐KO than WT. 14,15‐EEZE abolished the sex‐induced (F vs. M) and transgenic model‐dependent (KO vs. WT) differences in the cardiac contractility, confirming an EET‐driven response. Compared with M‐WT controls, F‐WT hearts expressed downregulation of sEH, associated with increased EETs and reduced DHETs, a pattern comparable to that observed in sEH‐KO hearts. Coincidentally, F‐WT and sEH‐KO hearts exhibited increased PPARα expression, but comparable expression of eNOS, PPARβ, and EET synthases. In conclusion, female‐specific downregulation of sEH initiates an EET‐dependent adaptation of cardiac function, characterized by increased coronary flow via reduction in vascular resistance, and promotion of cardiac contractility, a response that could be further intensified by PPARα.
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Affiliation(s)
- Jun Qin
- Department of Physiology, New York Medical College, Valhalla, New York Department of GI Surgery, Renji Hospital, School of Medicine Shanghai Jiaotong University, Shanghai, China
| | - Yicong Le
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Ghezal Froogh
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Sharath Kandhi
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Houli Jiang
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | - Meng Luo
- Department of GI Surgery, Shanghai Ninth People's Hospital, School of Medicine Shanghai Jiaotong University, Shanghai, China
| | - Dong Sun
- Department of Physiology, New York Medical College, Valhalla, New York
| | - An Huang
- Department of Physiology, New York Medical College, Valhalla, New York
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21
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EETs and HO-1 cross-talk. Prostaglandins Other Lipid Mediat 2016; 125:65-79. [DOI: 10.1016/j.prostaglandins.2016.06.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Revised: 06/03/2016] [Accepted: 06/20/2016] [Indexed: 01/26/2023]
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22
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Jo AR, Kim JH, Yan XT, Yang SY, Kim YH. Soluble epoxide hydrolase inhibitory components from Rheum undulatum and in silico approach. J Enzyme Inhib Med Chem 2016; 31:70-78. [DOI: 10.1080/14756366.2016.1189421] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Ah Reum Jo
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea,
| | - Jang Hoon Kim
- Department of Horticultural Environment, National Institute of Horticultural and Herbal Science, RDA, Wanju-Gun, Republic of Korea, and
| | - Xi-Tao Yan
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Science, Northwest A & F University, Yangling, Shaanxi, China
| | - Seo Young Yang
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea,
| | - Young Ho Kim
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea,
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He J, Wang C, Zhu Y, Ai D. Soluble epoxide hydrolase: A potential target for metabolic diseases. J Diabetes 2016; 8:305-13. [PMID: 26621325 DOI: 10.1111/1753-0407.12358] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 11/16/2015] [Accepted: 11/22/2015] [Indexed: 12/12/2022] Open
Abstract
Epoxyeicosatrienoic acids (EETs), important lipid mediators derived from arachidonic acid, have many beneficial effects in metabolic diseases, including atherosclerosis, hypertension, cardiac hypertrophy, diabetes, non-alcoholic fatty liver disease, and kidney disease. Epoxyeicosatrienoic acids can be further hydrolyzed to less active diols by the enzyme soluble epoxide hydrolase (sEH). Increasing evidence suggests that inhibition of sEH increases levels of EETs, which have anti-inflammatory effects and can prevent the development of hypertension, atherosclerosis, heart failure, fatty liver, and multiple organ fibrosis. Arachidonic acid is the most abundant omega-6 polyunsaturated fatty acid (PUFA) and shares the same set of enzymes with omega-3 PUFAs, such as docosahexaenoic acid and eicosapentaenoic acid. The omega-3 PUFAs and metabolites, such as regioisomeric epoxyeicosatetraenoic acids and epoxydocosapentaenoic acids, have been reported to have strong vasodilatory and anti-inflammatory effects. Therefore, sEH may be a potential therapeutic target for metabolic disorders. In this review, we focus on our and other recent studies of the functions of sEH, including the effects of its eicosanoid products from both omega-3 and omega-6 PUFAs, in various metabolic diseases. We also discuss the possible cellular and molecular mechanisms underlying the regulation of sEH.
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Affiliation(s)
- Jinlong He
- Collaborative Innovation Center of Tianjin for Medical Epigenetics, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, China
| | - Chunjiong Wang
- Collaborative Innovation Center of Tianjin for Medical Epigenetics, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, China
| | - Yi Zhu
- Collaborative Innovation Center of Tianjin for Medical Epigenetics, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, China
| | - Ding Ai
- Collaborative Innovation Center of Tianjin for Medical Epigenetics, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, China
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Manickam M, Pillaiyar T, Boggu P, Venkateswararao E, Jalani HB, Kim ND, Lee SK, Jeon JS, Kim SK, Jung SH. Discovery of enantioselectivity of urea inhibitors of soluble epoxide hydrolase. Eur J Med Chem 2016; 117:113-24. [PMID: 27092411 DOI: 10.1016/j.ejmech.2016.04.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 04/05/2016] [Accepted: 04/06/2016] [Indexed: 01/12/2023]
Abstract
Soluble epoxide hydrolase (sEH) hydrolyzes epoxyeicosatrienoic acids (EETs) in the metabolic pathway of arachidonic acid and has been considered as an important therapeutic target for chronic diseases such as hypertension, diabetes and inflammation. Although many urea derivatives are known as sEH inhibitors, the enantioselectivity of the inhibitors is not highlighted in spite of the stereoselective hydrolysis of EETs by sEH. In an effort to explore the importance of enantioselectivity in the urea scaffold, a series of enantiomers with the stereocenter adjacent to the urea nitrogen atom were prepared. The selectivity of enantiomers of 1-(α-alkyl-α-phenylmethyl)-3-(3-phenylpropyl)ureas showed wide range differences up to 125 fold with the low IC50 value up to 13 nM. The S-configuration with planar phenyl and small alkyl groups at α-position is crucial for the activity and selectivity. However, restriction of the free rotation of two α-groups with indan-1-yl or 1,2,3,4-tetrahydronaphthalen-1-yl moiety abolishes the selectivity between the enantiomers, despite the increase in activity up to 13 nM. The hydrophilic group like sulfonamido group at para position of 3-phenylpropyl motif of 1-(α-alkyl-α-phenylmethyl-3-(3-phenylpropyl)urea improves the activity as well as enantiomeric selectivity. All these ureas are proved to be specific inhibitor of sEH without inhibition against mEH.
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Affiliation(s)
- Manoj Manickam
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, Daejeon 34134, South Korea
| | - Thanigaimalai Pillaiyar
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, Daejeon 34134, South Korea
| | - PullaReddy Boggu
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, Daejeon 34134, South Korea
| | - Eeda Venkateswararao
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, Daejeon 34134, South Korea
| | - Hitesh B Jalani
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, Daejeon 34134, South Korea
| | - Nam-Doo Kim
- DGMIF, New Drug Development Center, 80, Cheombok-ro, Dong-gu, Daegu 41061, South Korea
| | - Seul Ki Lee
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, Daejeon 34134, South Korea
| | - Jang Su Jeon
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, Daejeon 34134, South Korea
| | - Sang Kyum Kim
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, Daejeon 34134, South Korea
| | - Sang-Hun Jung
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, Daejeon 34134, South Korea.
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Kim JH, Cho CW, Tai BH, Yang SY, Choi GS, Kang JS, Kim YH. Soluble Epoxide Hydrolase Inhibitory Activity of Selaginellin Derivatives from Selaginella tamariscina. Molecules 2015; 20:21405-14. [PMID: 26633335 PMCID: PMC6331899 DOI: 10.3390/molecules201219774] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 11/23/2015] [Accepted: 11/26/2015] [Indexed: 11/22/2022] Open
Abstract
Selaginellin derivatives 1–3 isolated from Selaginellatamariscina were evaluated for their inhibition of soluble epoxide hydrolase (sEH) to demonstrate their potential for the treatment of cardiovascular disease. All selaginellin derivatives (1–3) inhibited sEH enzymatic activity and PHOME hydrolysis, in a dose-dependent manner, with IC50 values of 3.1 ± 0.1, 8.2 ± 2.2, and 4.2 ± 0.2 μM, respectively. We further determined that the derivatives function as non-competitive inhibitors. Moreover, the predicted that binding sites and interaction between 1–3 and sEH were solved by docking simulations. According to quantitative analysis, 1–3 were confirmed to have high content in the roots of S. tamariscina; among them, selaginellin 3 exhibited the highest content of 189.3 ± 0.0 μg/g.
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Affiliation(s)
- Jang Hoon Kim
- College of Pharmacy, Chungnam National University, Daejeon 305-764, Korea.
- Department of Horticultural Environment, National Institute of Horticultural and Herbal Science, RDA, Wanju-gun, Jeollabuk-do 595-890, Korea.
| | - Chong Woon Cho
- College of Pharmacy, Chungnam National University, Daejeon 305-764, Korea.
| | - Bui Huu Tai
- College of Pharmacy, Chungnam National University, Daejeon 305-764, Korea.
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18-Hoang Quoc Viet, Caugiay, Hanoi 364-545, Vietnam.
| | - Seo Young Yang
- College of Pharmacy, Chungnam National University, Daejeon 305-764, Korea.
| | - Gug-Seoun Choi
- Department of Horticultural Environment, National Institute of Horticultural and Herbal Science, RDA, Wanju-gun, Jeollabuk-do 595-890, Korea.
| | - Jong Seong Kang
- College of Pharmacy, Chungnam National University, Daejeon 305-764, Korea.
| | - Young Ho Kim
- College of Pharmacy, Chungnam National University, Daejeon 305-764, Korea.
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Qin J, Kandhi S, Froogh G, Jiang H, Luo M, Sun D, Huang A. Sexually dimorphic phenotype of arteriolar responsiveness to shear stress in soluble epoxide hydrolase-knockout mice. Am J Physiol Heart Circ Physiol 2015; 309:H1860-6. [PMID: 26453332 DOI: 10.1152/ajpheart.00568.2015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 10/07/2015] [Indexed: 01/05/2023]
Abstract
We hypothesized that potentiating the bioavailability of endothelial epoxyeicosatrienoic acids (EETs) via deletion of the gene for soluble epoxide hydrolase (sEH), or downregulation of sEH expression, enhances flow/shear stress-induced dilator responses (FID) of arterioles. With the use of male (M) and female (F) wild-type (WT) and sEH-knockout (KO) mice, isolated gracilis muscle arterioles were cannulated and pressurized at 80 mmHg. Basal tone and increases in diameter of arterioles as a function of perfusate flow (5, 10, 15, 20, and 25 μl/min) were recorded. The magnitude of FID was significantly smaller and associated with a greater arteriolar tone in M-WT than F-WT mice, revealing a sex difference in FID. This sex difference was abolished by deletion of the sEH gene, as evidenced by an enhanced FID in M-KO mice to a level comparable with those observed in F-KO and F-WT mice. These three groups of mice coincidentally exhibited an increased endothelial sensitivity to shear stress (smaller WSS50) and were hypotensive. Endothelial EETs participated in the mediation of enhanced FID in M-KO, F-KO, and F-WT mice, without effects on FID of M-WT mice. Protein expression of sEH was downregulated by approximately fourfold in vessels of F-WT compared with M-WT mice, paralleled with greater vascular EET levels that were statistically comparable with those observed in both male and female sEH-KO mice. In conclusion, sex-different regulation of sEH accounts for sex differences in flow-mediated dilation of microvessels in gonadally intact mice.
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Affiliation(s)
- Jun Qin
- Department of Physiology, New York Medical College, Valhalla, New York; Renji Hospital, Shanghai Jiaotong University School of Medicine, People's Republic of China
| | - Sharath Kandhi
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Ghezal Froogh
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Houli Jiang
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | - Meng Luo
- Renji Hospital, Shanghai Jiaotong University School of Medicine, People's Republic of China; Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, People's Republic of China
| | - Dong Sun
- Department of Physiology, New York Medical College, Valhalla, New York
| | - An Huang
- Department of Physiology, New York Medical College, Valhalla, New York;
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Lee GY, Kim JH, Choi SK, Kim YH. Constituents of the seeds of Cassia tora with inhibitory activity on soluble expoxide hydrolease. Bioorg Med Chem Lett 2015; 25:5097-101. [PMID: 26483136 DOI: 10.1016/j.bmcl.2015.10.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 09/17/2015] [Accepted: 10/06/2015] [Indexed: 10/22/2022]
Abstract
Efforts to extract soluble epoxide hydrolase (sEH) inhibitors from food sources through bioactivity-guided fractionation of Cassia tora seed extracts led to the isolation of one new compound, 1, and 15 known compounds, 2-16. Structural elucidations were performed using 1D/2D NMR spectroscopy and mass spectrometry. Compounds 1, 3, 4, 6, 10, 11, and 13-16 exhibited inhibitory activities on sEH with IC50 values of 2.2±2.1-40.6±3.4 μM. Compound 13 was particularly active and exhibited a reversible-uncompetitive behavior in enzyme kinetic studies. A binding site on the enzyme for compound 13 was also predicted by Autodock 4.2 simulations.
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Affiliation(s)
- Ga Young Lee
- College of Pharmacy, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Jang Hoon Kim
- College of Pharmacy, Chungnam National University, Daejeon 305-764, Republic of Korea; Department of Horticultural Environment, National Institute of Horticultural and Herbal Science, RDA, Wanju 565-852, Republic of Korea
| | - Seung-Kook Choi
- Department of Horticultural Environment, National Institute of Horticultural and Herbal Science, RDA, Wanju 565-852, Republic of Korea
| | - Young Ho Kim
- College of Pharmacy, Chungnam National University, Daejeon 305-764, Republic of Korea.
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Singh S, Veeraswamy G, Bhattarai D, Goo JI, Lee K, Choi Y. Recent Advances in the Development of Pharmacologically Active Compounds that Contain a Benzoxazole Scaffold. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500235] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sarbjit Singh
- College of Pharmacy; Dongguk University-Seoul; Republic of Korea
| | - Gajulapati Veeraswamy
- College of Life Science and Biotechnology; Korea University-Seoul; Republic of Korea
| | - Deepak Bhattarai
- College of Pharmacy; Dongguk University-Seoul; Republic of Korea
| | - Ja-Il Goo
- College of Life Science and Biotechnology; Korea University-Seoul; Republic of Korea
| | - Kyeong Lee
- College of Pharmacy; Dongguk University-Seoul; Republic of Korea
| | - Yongseok Choi
- College of Life Science and Biotechnology; Korea University-Seoul; Republic of Korea
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Qin J, Sun D, Jiang H, Kandhi S, Froogh G, Hwang SH, Hammock BD, Wolin MS, Thompson CI, Hintze TH, Huang A. Inhibition of soluble epoxide hydrolase increases coronary perfusion in mice. Physiol Rep 2015; 3:3/6/e12427. [PMID: 26071213 PMCID: PMC4510629 DOI: 10.14814/phy2.12427] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Roles of soluble epoxide hydrolase (sEH), the enzyme responsible for hydrolysis of epoxyeicosatrienoic acids (EETs) to their diols (DHETs), in the coronary circulation and cardiac function remain unknown. We tested the hypothesis that compromising EET hydrolysis/degradation, via sEH deficiency, lowers the coronary resistance to promote cardiac perfusion and function. Hearts were isolated from wild type (WT), sEH knockout (KO) mice and WT mice chronically treated with t-TUCB (sEH inhibitor), and perfused with constant flow at different pre-loads. Compared to WT controls, sEH-deficient hearts required significantly greater basal coronary flow to maintain the perfusion pressure at 100 mmHg and exhibited a greater reduction in vascular resistance during tension-induced heart work, implying a better coronary perfusion during cardiac performance. Cardiac contractility, characterized by developed tension in response to changes in preload, was potentially increased in sEH-KO hearts, manifested by an enlarged magnitude at each step-wise increase in end-diastolic to peak-systolic tension. 14,15-EEZE (EET antagonist) prevented the adaptation of coronary circulation in sEH null hearts whereas responses in WT hearts were sensitive to the inhibition of NO. Cardiac expression of EET synthases (CYP2J2/2C29) was comparable in both genotypic mice whereas, levels of 14,15-, 11,12- and 8,9-EETs were significantly higher in sEH-KO hearts, accompanied with lower levels of DHETs. In conclusion, the elevation of cardiac EETs, as a function of sEH deficiency, plays key roles in the adaptation of coronary flow and cardiac function.
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Affiliation(s)
- Jun Qin
- Department of Physiology, New York Medical College, Valhalla, New York Department of GI Surgery, Renji Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Dong Sun
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Houli Jiang
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | - Sharath Kandhi
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Ghezal Froogh
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Sung Hee Hwang
- Department of Entomology, University of California Davis Comprehensive Cancer Center University of California, Davis, California
| | - Bruce D Hammock
- Department of Entomology, University of California Davis Comprehensive Cancer Center University of California, Davis, California
| | - Michael S Wolin
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Carl I Thompson
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Thomas H Hintze
- Department of Physiology, New York Medical College, Valhalla, New York
| | - An Huang
- Department of Physiology, New York Medical College, Valhalla, New York
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Vanella L, Canestraro M, Lee CR, Cao J, Zeldin DC, Schwartzman ML, Abraham NG. Soluble epoxide hydrolase null mice exhibit female and male differences in regulation of vascular homeostasis. Prostaglandins Other Lipid Mediat 2015; 120:139-47. [PMID: 25908301 DOI: 10.1016/j.prostaglandins.2015.04.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 03/26/2015] [Accepted: 04/07/2015] [Indexed: 02/09/2023]
Abstract
Increased CYP epoxygenase activity and consequently up regulation of epoxyeicosatrienoic acids (EETs) levels provides protection against metabolic syndrome and cardiovascular diseases. Conversion of arachidonic acid epoxides to diols by soluble epoxide hydrolase (sEH) diminishes the beneficial cardiovascular properties of these epoxyeicosanoids. We therefore examined the possible biochemical consequences of sEH deletion on vascular responses in male and female mice. Through the use of the sEH KO mouse, we provide evidence of differences in the compensatory response in the balance between nitric oxide (NO), carbon monoxide (CO), EETs and the vasoconstrictor 20-HETE in male and female KO mice. Serum levels of adiponectin, TNFα, IL-1b and MCP1 and protein expression in vascular tissue of p-AMPK, p-AKT and p-eNOS were measured. Deletion of sEH caused a significant (p<0.05) decrease in body weight, and an increase in adiponectin, pAMPK and pAKT levels in female KO mice compared to male KO mice. Gene deletion resulted in a higher production of renal EETs in female KO compared to male KO mice and, concomitantly, we observed an increase in renal 20-HETEs levels and superoxide anion production only in male KO mice. sEH deletion increased p-AKT and p-eNOS protein expression but decreased p-AMPK levels in female KO mice. Increased levels of p-eNOS at Thr-495 were observed only in KO male mice. While p-eNOS at 1177 were not significantly different between male and female. Nitric oxide production was unaltered in male KO mice. These results provide evidence of gender differences in the preservation of vascular homeostasis in response to sEH deletion which involves regulation of phosphorylation of eNOS at the 495 site.
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Affiliation(s)
- Luca Vanella
- Department of Pharmacology, New York Medical College, Valhalla, NY 10595, USA; Department of Drug Sciences, University of Catania, Catania, Italy
| | - Martina Canestraro
- Department of Pharmacology, New York Medical College, Valhalla, NY 10595, USA
| | - Craig R Lee
- Division of Intramural Research, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Jian Cao
- Chinese PLA General Hospital, Beijing 100853, China
| | - Darryl C Zeldin
- Division of Intramural Research, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | | | - Nader G Abraham
- Department of Pharmacology, New York Medical College, Valhalla, NY 10595, USA; Department of Internal Medicine, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25701, USA.
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Qiu H, Li N, Liu JY, Harris TR, Hammock BD, Chiamvimonvat N. Soluble epoxide hydrolase inhibitors and heart failure. Cardiovasc Ther 2015; 29:99-111. [PMID: 20433684 DOI: 10.1111/j.1755-5922.2010.00150.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Cardiovascular disease remains one of the leading causes of death in the Western societies. Heart failure (HF) is due primarily to progressive myocardial dysfunction accompanied by myocardial remodeling. Once HF develops, the condition is, in most cases, irreversible and is associated with a very high mortality rate. Soluble epoxide hydrolase (sEH) is an enzyme that catalyzes the hydrolysis of epoxyeicosatrienoic acids (EETs), which are lipid mediators derived from arachidonic acid through the cytochrome P450 epoxygenase pathway. EETs have been shown to have vasodilatory, antiinflammatory, and cardioprotective effects. When EETs are hydrolyzed by sEH to corresponding dihydroxyeicosatrienoic acids, their cardioprotective activities become less pronounced. In line with the recent genetic study that has identified sEH as a susceptibility gene for HF, the sEH enzyme has received considerable attention as an attractive therapeutic target for cardiovascular diseases. Indeed, sEH inhibition has been demonstrated to have antihypertensive and antiinflammatory actions, presumably due to the increased bioavailability of endogenous EETs and other epoxylipids, and several potent sEH inhibitors have been developed and tested in animal models of cardiovascular disease including hypertension, cardiac hypertrophy, and ischemia/reperfusion injury. sEH inhibitor treatment has been shown to effectively prevent pressure overload- and angiotensin II-induced cardiac hypertrophy and reverse the pre-established cardiac hypertrophy caused by chronic pressure overload. Application of sEH inhibitors in several cardiac ischemia/reperfusion injury models reduced infarct size and prevented the progressive cardiac remodeling. Moreover, the use of sEH inhibitors prevented the development of electrical remodeling and ventricular arrhythmias associated with cardiac hypertrophy and ischemia/reperfusion injury. The data published to date support the notion that sEH inhibitors may represent a promising therapeutic approach for combating detrimental cardiac remodeling and HF.
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Affiliation(s)
- Hong Qiu
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of California, Davis, CA, USA Department of Veterans Affairs, Northern California Health Care System Mather, CA, USA Department of Entomology and UC Davis Cancer Center, University of California, Davis, CA, USA
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Sato Y, Sato W, Maruyama S, Wilcox CS, Falck JR, Masuda T, Kosugi T, Kojima H, Maeda K, Furuhashi K, Ando M, Imai E, Matsuo S, Kadomatsu K. Midkine Regulates BP through Cytochrome P450-Derived Eicosanoids. J Am Soc Nephrol 2014; 26:1806-15. [PMID: 25377079 DOI: 10.1681/asn.2013121259] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Accepted: 09/22/2014] [Indexed: 01/25/2023] Open
Abstract
The effects of endothelium-derived hyperpolarizing factors have been attributed to cytochrome P450-derived epoxyeicosatrienoic acids (EETs), but the regulation and role of EETs in endothelial dysfunction remain largely unexplored. Hypertension is a primary risk factor for renal dysfunction, which is frequently accompanied by various systemic diseases induced by endothelial dysfunction in the microcirculation. We previously reported that the endothelial growth factor midkine (MK) enhances hypertension in a model of CKD. Here, we investigated the hypothesis that MK regulates EET activity and thereby BP. MK gene-deleted mice were resistant to hypertension and developed less glomerulosclerosis and proteinuria after administration of a nitric oxide synthase (NOS) inhibitor in the setting of uninephrectomy. The hypertension observed in uninephrectomized wild-type mice after NOS inhibition was ameliorated by anti-MK antibody. MK-deficient mice produced higher amounts of EETs, and EETs dominantly regulated BP in these mice. Furthermore, MK administration to MK-deficient mice recapitulated the BP control observed in wild-type mice. EETs also dominantly regulated renal blood flow, which may influence renal function, in MK-deficient mice. Taken together, these results suggest that the MK/EET pathway is physiologically engaged in BP control and could be a target for the treatment of hypertension complicated by endothelial dysfunction.
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Affiliation(s)
- Yuka Sato
- Departments of Biochemistry and Nephrology
| | | | | | - Christopher S Wilcox
- Hypertension, Kidney and Vascular Research Center, Georgetown University, Washington, DC; and
| | - John R Falck
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas
| | | | | | | | | | | | - Masahiko Ando
- Center for Advanced Medicine and Clinical Research, Nagoya University Graduate School of Medicine, Nagoya, Japan
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The protective effect of epoxyeicosatrienoic acids on cerebral ischemia/reperfusion injury is associated with PI3K/Akt pathway and ATP-sensitive potassium channels. Neurochem Res 2014; 40:1-14. [PMID: 25366463 DOI: 10.1007/s11064-014-1456-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 09/11/2014] [Accepted: 10/09/2014] [Indexed: 12/27/2022]
Abstract
Epoxyeicosatrienoic acids (EETs), the cytochrome P450 epoxygenase metabolite of arachidonic acid, have been demonstrated to have neuroprotective effect. Phosphatidylinositol 3-kinase (PI3K)/Akt and ATP-sensitive potassium (KATP) channels are thought to be important factors that mediate neuroprotection. However, little is known about the role of PI3K/Akt and KATP channels in brain after EETs administration. In vitro experiment, oxygen-glucose deprivation (OGD) was performed in cultured rat cerebral microvascular smooth muscle cells (SMCs) for 4 h. The effect of 14,15-EET on OGD induced cell apoptosis was examined after reoxygenation. Western blot and real-time PCR were used to analyze the expression of Kir6.1, SUR2B (two subunits of KATP channels) and p-Akt on cerebral microvascular SMCs. In vivo experiments, we use 12-(3-adamantan-1-yl-ureido)-dodecanoic acid [AUDA, a specific soluble epoxide hydrolase (sEH) inhibitor] to confirm the effect of EETs indirectly. Rats were injected intraperitoneally with AUDA before being subjected to middle cerebral artery occlusion (MCAO). We detected the apoptosis and the expression of p-Akt, Kir6.1 and SUR2B in ischemic penumbra. The results showed that EETs protect against cerebral ischemia/reperfusion (I/R) injury and upregulated the expression of p-Akt and Kir6.1 in both of ischemic penumbra and OGD induced cerebral microvascular SMCs. The protective effect was inhibited by Wortmannin (a specific PI3K inhibitor) and Glib (a specific KATP inhibitor) respectively in vitro experiment. In conclusion, these results suggested that the protective effect of EETs on cerebral I/R injury is associated with PI3K/Akt pathway and KATP channels. Furthermore, the PI3K pathway may contribute to mediating KATP channels on cerebral microvascular SMCs.
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Terry CM, Carlson ML, He Y, Ulu A, Morisseau C, Blumenthal DK, Hammock BD, Cheung AK. Aberrant soluble epoxide hydrolase and oxylipin levels in a porcine arteriovenous graft stenosis model. J Vasc Res 2014; 51:269-82. [PMID: 25196102 DOI: 10.1159/000365251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 04/23/2014] [Indexed: 11/19/2022] Open
Abstract
Synthetic arteriovenous grafts (AVGs) used for hemodialysis frequently fail due to the development of neointimal hyperplasia (NH) at the vein-graft anastomosis. Inflammation and smooth-muscle cell (SMC) and myofibroblast proliferation and migration likely play an important role in the pathogenesis of NH. Epoxyeicosatrienoic acids (EETs), the products of the catabolism of arachidonic acid by cytochrome P450 enzymes, possess anti-inflammatory, antiproliferative, antimigratory and vasodilatory properties that should reduce NH. The degradation of vasculoprotective EETs is catalyzed by the enzyme, soluble epoxide hydrolase (sEH). sEH upregulation may thus contribute to NH development by the enhanced removal of vasculoprotective EETs. In this study, sEH, cytochrome P450 and EETs were examined after AVG placement in a porcine model to explore their potential roles in AVG stenosis. Increased sEH protein expression, decreased P450 epoxygenase activity and dysregulation of 5 oxylipin mediators were observed in the graft-venous anastomotic tissues when compared to control veins. Pharmacological inhibitors of sEH decreased the growth factor-induced migration of SMCs and fibroblasts, although they had no significant effect on the proliferation of these cells. These results provide insights on epoxide biology in vascular disorders and a rationale for the development of novel pharmacotherapeutic strategies to prevent AVG failure due to NH and stenosis.
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Affiliation(s)
- Christi M Terry
- Division of Nephrology and Hypertension, University of Utah, Utah, USA
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Protection from hypertension in mice by the Mediterranean diet is mediated by nitro fatty acid inhibition of soluble epoxide hydrolase. Proc Natl Acad Sci U S A 2014; 111:8167-72. [PMID: 24843165 DOI: 10.1073/pnas.1402965111] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Soluble epoxide hydrolase (sEH) is inhibited by electrophilic lipids by their adduction to Cys521 proximal to its catalytic center. This inhibition prevents hydrolysis of the enzymes' epoxyeicosatrienoic acid (EET) substrates, so they accumulate inducing vasodilation to lower blood pressure (BP). We generated a Cys521Ser sEH redox-dead knockin (KI) mouse model that was resistant to this mode of inhibition. The electrophilic lipid 10-nitro-oleic acid (NO2-OA) inhibited hydrolase activity and also lowered BP in an angiotensin II-induced hypertension model in wild-type (WT) but not KI mice. Furthermore, EET/dihydroxy-epoxyeicosatrienoic acid isomer ratios were elevated in plasma from WT but not KI mice following NO2-OA treatment, consistent with the redox-dead mutant being resistant to inhibition by lipid electrophiles. sEH was inhibited in WT mice fed linoleic acid and nitrite, key constituents of the Mediterranean diet that elevates electrophilic nitro fatty acid levels, whereas KIs were unaffected. These observations reveal that lipid electrophiles such as NO2-OA mediate antihypertensive signaling actions by inhibiting sEH and suggest a mechanism accounting for protection from hypertension afforded by the Mediterranean diet.
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Sun D, Cuevas AJ, Gotlinger K, Hwang SH, Hammock BD, Schwartzman ML, Huang A. Soluble epoxide hydrolase-dependent regulation of myogenic response and blood pressure. Am J Physiol Heart Circ Physiol 2014; 306:H1146-53. [PMID: 24561863 DOI: 10.1152/ajpheart.00920.2013] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Epoxyeicosatrienoic acids (EETs) are metabolites of arachidonic acid via cytochrome P450 (CYP)/epoxygenases. EETs possess cardioprotective properties and are catalyzed by soluble epoxide hydrolase (sEH) to dihydroxyeicosatrienoic acids (DHETs) that lack vasoactive property. To date, the role of sEH in the regulation of myogenic response of resistant arteries, a key player in the control of blood pressure, remains unknown. To this end, experiments were conducted on sEH-knockout (KO) mice, wild-type (WT) mice, and endothelial nitric oxide synthase (eNOS)-KO mice treated with t-TUCB, a sEH inhibitor, for 4 wk. sEH-KO and t-TUCB-treated mice displayed significantly lower blood pressure, associated with significantly increased vascular EETs and ratio of EETs/DHETs. Pressure-diameter relationships were assessed in isolated and cannulated gracilis muscle arterioles. All arterioles constricted in response to increases in transmural pressure from 60 to 140 mmHg. The myogenic constriction was significantly reduced, expressed as an upward shift of pressure-diameter curve, in arterioles of sEH-KO and t-TUCB-treated eNOS-KO mice compared with their controls. Removal of the endothelium, or treatment of the vessels with PPOH, an inhibitor of EET synthase, restored the attenuated pressure-induced constriction to the levels similar to those observed in their controls but had no effects on control vessels. No difference was observed in the myogenic index, or in the vascular expression of eNOS, CYP2C29 (EET synthase), and CYP4A (20-HETE synthase) among these groups of mice. In conclusion, the increased EET bioavailability, as a function of deficiency/inhibition of sEH, potentiates vasodilator responses that counteract pressure-induced vasoconstriction to lower blood pressure.
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Affiliation(s)
- Dong Sun
- Department of Physiology, New York Medical College, Valhalla, New York
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37
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Chen H, Zhang Y, Ye C, Feng TT, Han JG. Insight into the binding modes and inhibition mechanisms of adamantyl-based 1,3-disubstituted urea inhibitors in the active site of the human soluble epoxide hydrolase. J Biomol Struct Dyn 2013; 32:1231-47. [DOI: 10.1080/07391102.2013.812981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Imig JD, Walsh KA, Hye Khan MA, Nagasawa T, Cherian-Shaw M, Shaw SM, Hammock BD. Soluble epoxide hydrolase inhibition and peroxisome proliferator activated receptor γ agonist improve vascular function and decrease renal injury in hypertensive obese rats. Exp Biol Med (Maywood) 2013; 237:1402-12. [PMID: 23354399 DOI: 10.1258/ebm.2012.012225] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Cardiometabolic syndrome occurs with obesity and consists of pathophysiological factors that increase the risk for cardiovascular events. Soluble epoxide hydrolase inhibition (sEHi) is a novel therapeutic approach that exerts renal and cardiovascular protection. Although sEHi as a therapeutic approach is promising, it could be more effective for the treatment of cardiometabolic syndrome when combined with peroxisome proliferator activated receptor γ (PPARγ) agonists. We hypothesized that the PPARγ agonist, rosiglitazone in combination with a sEHi (tAUCB) will provide synergistic actions to decrease blood pressure, improve vascular function, decrease inflammation, and prevent renal damage in spontaneously hypertensive obese rats (SHROB). SHROB were treated with rosiglitazone, tAUCB or the combination of tAUCB and rosiglitazone for four-weeks and compared with spontaneously hypertensive (SHR) and Wistar-Kyoto (WKY) rats. Blood pressure increased in SHROB (164 ± 7 mmHg) and decreased 10 mmHg when treated with rosiglitazone, tAUCB, or tAUCB and rosiglitazone. Mesenteric artery dilation to the K(ATP) channel opener pinacidil was attenuated in SHROB (E(Max) = 77 ± 7%), compared with WKY (E(Max) = 115 ± 19) and SHR (E(Max) = 93 ± 12%). Vasodilation to pinacidil was improved by rosiglitazone (E(Max) = 92 ± 14%) but not tAUCB. Renal macrophage infiltration increased in SHROB and significantly decreased with rosiglitazone or tAUCB and rosiglitazone treatment. Albuminuria was increased in SHROB (90 ± 20 mg/d) and was significantly decreased by the combination of tAUCB and rosiglitazone (37 ± 9 mg/d). Glomerular injury in SHROB was also significantly decreased by tAUCB and rosiglitazone. These results indicate that even though sEHi or PPARγ agonist have benefits when used individually, the combination is more beneficial for the multidisease features in cardiometabolic syndrome.
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Affiliation(s)
- John D Imig
- Department of Pharmacology & Toxicology and Cardiovascular Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA.
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Morisseau C, Hammock BD. Measurement of soluble epoxide hydrolase (sEH) activity. ACTA ACUST UNITED AC 2013; Chapter 4:Unit 4.23. [PMID: 23045145 DOI: 10.1002/0471140856.tx0423s33] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The human soluble epoxide hydrolase (sEH; EC 3.3.3.2) is the product of the EXPH2 gene. The sEH catalyzes the addition of a water molecule to an epoxide, resulting in the corresponding diol. Early work suggested a role of sEH in detoxifying a wide array of xenobiotic epoxides; however, recent findings clearly implicate the sEH in the regulation of blood pressure, pain, and inflammation through the hydrolysis of endogenous epoxy fatty acids such as epoxyeicosatrienoic acids (EETs). Both expression and activity of sEH are influenced by a wide array of xenobiotics, underlying how environmental contaminants could influence human health through sEH. This unit describes radiometric, fluorimetric, and mass spectrometric assays for measuring the activity of sEH and its inhibition.
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40
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Chen L, Fan C, Zhang Y, Bakri M, Dong H, Morisseau C, Maddipati KR, Luo P, Wang CY, Hammock BD, Wang MH. Beneficial effects of inhibition of soluble epoxide hydrolase on glucose homeostasis and islet damage in a streptozotocin-induced diabetic mouse model. Prostaglandins Other Lipid Mediat 2012; 104-105:42-8. [PMID: 23247129 DOI: 10.1016/j.prostaglandins.2012.12.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Revised: 11/16/2012] [Accepted: 12/05/2012] [Indexed: 01/16/2023]
Abstract
Soluble epoxide hydrolase (sEH) is an enzyme involved in the metabolism of endogenous inflammatory and anti-apoptotic mediators. In the present study, we determined the effects of the inhibition of sEH on glucose homeostasis and islet damage in mice treated with streptozotocin (STZ), a model of chemical-induced diabetes. STZ increased daily water intake and decreased visceral (spleen and pancreas) weight in mice; sEH inhibition in STZ mice decreased water intake, but did not affect visceral weight. Hyperglycemia induced by STZ treatment in mice was attenuated by inhibiting sEH. The beneficial effects of sEH inhibition were accompanied, after 2 and 4 weeks of initial administration, by improving glucose tolerance. In contrast, sEH inhibition did not affect insulin tolerance. Using LC/MS analysis, neither STZ nor STZ plus sEH inhibition affected pancreatic and plasma ratios of epoxyeicosatrienoic acids (EETs) to dihydroxyeicosatrienoic acids (DHETs), an index of EETs levels. Western blot analysis showed that mouse cytochrome P450 (CYP) 2C enzymes are the major epoxygenases in islets. On day 5 after initial STZ treatment, STZ induced islet cell apoptosis, while sEH inhibition in STZ mice significantly reduced islet cell apoptosis. These studies provide pharmacological evidence that inhibiting sEH activity provides significant protection against islet β-cell damage and improves glucose homeostasis in STZ-induced diabetes.
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Affiliation(s)
- Lingdan Chen
- Department of Physiology, Georgia Health Sciences University, Augusta, GA 30912, USA
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41
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Chen H, Zhang Y, Li L, Han JG. Probing Ligand-Binding Modes and Binding Mechanisms of Benzoxazole-Based Amide Inhibitors with Soluble Epoxide Hydrolase by Molecular Docking and Molecular Dynamics Simulation. J Phys Chem B 2012; 116:10219-33. [DOI: 10.1021/jp304736e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Hang Chen
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei
230029, People’s Republic of China
| | - Ying Zhang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei
230029, People’s Republic of China
| | - Liang Li
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei
230029, People’s Republic of China
| | - Ju-Guang Han
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei
230029, People’s Republic of China
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42
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Terashvili M, Sarkar P, Nostrand MV, Falck JR, Harder DR. The protective effect of astrocyte-derived 14,15-epoxyeicosatrienoic acid on hydrogen peroxide-induced cell injury in astrocyte-dopaminergic neuronal cell line co-culture. Neuroscience 2012; 223:68-76. [PMID: 22863680 DOI: 10.1016/j.neuroscience.2012.07.045] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Revised: 07/09/2012] [Accepted: 07/19/2012] [Indexed: 11/25/2022]
Abstract
Astrocytes perform several functions that are essential for normal neuronal activity. They play a critical role in neuronal survival during ischemia and other degenerative injuries and also modulate neuronal recovery by influencing neurite outgrowth. In this study, we investigated the neuroprotective effects of astrocyte-derived 14,15-epoxyeicosatrienoic acid (14,15-EET), metabolite of arachidonic acid by cytochrome P450 epoxygenases (CYP), against oxidative stress induced by hydrogen peroxide (H(2)O(2)). We found that dopaminergic neuronal cells (N27 cell line) stimulated with two different doses of H(2)O(2) (0.1 and 1mM) for 1h showed decreased cell viability compared to the control group, while astrocytes showed less cell death after stimulation with the same doses of H(2)O(2) for 1h. Dopaminergic neuronal cells (N27 cell line) pretreated with different doses of 14,15-EET (0.1-30 μM, 30 min) before H(2)O(2) stimulation also showed increased cell viability. Furthermore, pre-treatment of the co-cultured cells with 12-(3-adamantan-1-yl-ureido)-dodecanoic acid, an inhibitor of the EET metabolizing enzyme, soluble epoxide hydrolase (sEH), before H(2)O(2) stimulation (1mM, for 1h) increased cell viability. It also increased the endogenous level of 14,15-EET in the media compared to control group. However, pretreatment with the CYP epoxygenase inhibitor miconazole (1-20 μM, 1h) before H(2)O(2) (1mM, 1h) stimulation showed decreased cell viability. Our data suggest that 14,15-EET which is released from astrocytes, enhances cell viability against oxidant-induced injury. Further understanding of the mechanism of 14,15-EET-mediated protection in dopaminergic neurons is imperative, as it could lead to novel therapeutic approaches for treating CNS neuropathologies, such as Parkinson's disease.
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Affiliation(s)
- M Terashvili
- Department of Physiology, Cardiovascular Research Center, Medical College of Wisconsin, Milwaukee, WI 53226, United States
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43
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Imig JD. Epoxides and soluble epoxide hydrolase in cardiovascular physiology. Physiol Rev 2012; 92:101-30. [PMID: 22298653 DOI: 10.1152/physrev.00021.2011] [Citation(s) in RCA: 272] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Epoxyeicosatrienoic acids (EETs) are arachidonic acid metabolites that importantly contribute to vascular and cardiac physiology. The contribution of EETs to vascular and cardiac function is further influenced by soluble epoxide hydrolase (sEH) that degrades EETs to diols. Vascular actions of EETs include dilation and angiogenesis. EETs also decrease inflammation and platelet aggregation and in general act to maintain vascular homeostasis. Myocyte contraction and increased coronary blood flow are the two primary EET actions in the heart. EET cell signaling mechanisms are tissue and organ specific and provide significant evidence for the existence of EET receptors. Additionally, pharmacological and genetic manipulations of EETs and sEH have demonstrated a contribution for this metabolic pathway to cardiovascular diseases. Given the impact of EETs to cardiovascular physiology, there is emerging evidence that development of EET-based therapeutics will be beneficial for cardiovascular diseases.
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Affiliation(s)
- John D Imig
- Department of Pharmacology and Toxicology, Cardiovascular Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.
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Hou HH, Hammock BD, Su KH, Morisseau C, Kou YR, Imaoka S, Oguro A, Shyue SK, Zhao JF, Lee TS. N-terminal domain of soluble epoxide hydrolase negatively regulates the VEGF-mediated activation of endothelial nitric oxide synthase. Cardiovasc Res 2011; 93:120-9. [PMID: 22072631 DOI: 10.1093/cvr/cvr267] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
AIMS The mammalian soluble epoxide hydrolase (sEH) has both an epoxide hydrolase and a phosphatase domain. The role of sEH hydrolase activity in the metabolism of epoxyeicosatrienoic acids (EETs) and the activation of endothelial nitric oxide synthase (eNOS) in endothelial cells (ECs) has been well defined. However, far less is known about the role of sEH phosphatase activity in eNOS activation. In the present study, we investigated whether the phosphatase domain of sEH was involved in the eNOS activation in ECs. METHODS AND RESULTS The level of eNOS phosphorylation in aortas is higher in the sEH knockout (sEH(-/-)) mice than in wild-type mice. In ECs, pharmacological inhibition of sEH phosphatase or overexpressing sEH with an inactive phosphatase domain enhanced vascular endothelial growth factor (VEGF)-induced NO production and eNOS phosphorylation. In contrast, overexpressing the phosphatase domain of sEH prevented the VEGF-mediated NO production and eNOS phosphorylation at Ser617, Ser635, and Ser1179. Additionally, treatment with VEGF induced a c-Src kinase-dependent increase in transient tyrosine phosphorylation of sEH and the formation of a sEH-eNOS complex, which was abolished by treatment with a c-Src kinase inhibitor, PP1, or the c-Src dominant-negative mutant K298M. We also demonstrated that the phosphatase domain of sEH played a key role in VEGF-induced angiogenesis by detecting the tube formation in ECs and neovascularization in Matrigel plugs in mice. CONCLUSION In addition to epoxide hydrolase activity, phosphatase activity of sEH plays a pivotal role in the regulation of eNOS activity and NO-mediated EC functions.
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Affiliation(s)
- Hsin-Han Hou
- Institute of Physiology, National Yang-Ming University, Taipei, Taiwan
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45
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Vanella L, Kim DH, Sodhi K, Barbagallo I, Burgess AP, Falck JR, Schwartzman ML, Abraham NG. Crosstalk between EET and HO-1 downregulates Bach1 and adipogenic marker expression in mesenchymal stem cell derived adipocytes. Prostaglandins Other Lipid Mediat 2011; 96:54-62. [PMID: 21821145 DOI: 10.1016/j.prostaglandins.2011.07.005] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 07/14/2011] [Accepted: 07/19/2011] [Indexed: 01/10/2023]
Abstract
Epoxygenase activity and synthesis of epoxyeicosatrienoic acids (EETs) have emerged as important modulators of obesity and diabetes. We examined the effect of the EET-agonist 12-(3-hexylureido)dodec-8(2) enoic acid on mesenchymal stem cell (MSC) derived adipocytes proliferation and differentiation. MSCs expressed substantial levels of EETs and inhibition of soluble epoxide hydrolase (sEH) increased the level of EETs and decreased adipogenesis. EET agonist treatment increased HO-1 expression by inhibiting a negative regulator of HO-1 expression, Bach-1. EET treatment also increased βcatenin and pACC levels while decreasing PPARγ C/EBPα and fatty acid synthase levels. These changes were manifested by a decrease in the number of large inflammatory adipocytes, TNFα, IFNγ and IL-1α, but an increase in small adipocytes and in adiponectin levels. In summary, EET agonist treatment inhibits adipogenesis and decreases the levels of inflammatory cytokines suggesting the potential action of EETs as intracellular lipid signaling modulators of adipogenesis and adiponectin.
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Affiliation(s)
- Luca Vanella
- Department of Physiology and Pharmacology, University of Toledo College of Medicine, Toledo, OH 43614, USA.
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46
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Falck JR, Wallukat G, Puli N, Goli M, Arnold C, Konkel A, Rothe M, Fischer R, Müller DN, Schunck WH. 17(R),18(S)-epoxyeicosatetraenoic acid, a potent eicosapentaenoic acid (EPA) derived regulator of cardiomyocyte contraction: structure-activity relationships and stable analogues. J Med Chem 2011; 54:4109-18. [PMID: 21591683 DOI: 10.1021/jm200132q] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
17(R),18(S)-epoxyeicosatetraenoic acid [17(R),18(S)-EETeTr], a cytochrome P450 epoxygenase metabolite of eicosapentaenoic acid (EPA), exerts negative chronotropic effects and protects neonatal rat cardiomyocytes against Ca(2+)-overload with EC(50) ≈ 1-2 nM. Structure-activity studies revealed that a cis-Δ(11,12)- or Δ(14,15)-olefin and a 17(R),18(S)-epoxide are minimal structural elements for antiarrhythmic activity whereas antagonist activity was often associated with the combination of a Δ(14,15)-olefin and a 17(S),18(R)-epoxide. Compared with natural material, the agonist and antagonist analogues are chemically and metabolically more robust and several show promise as templates for future development of clinical candidates.
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Affiliation(s)
- John R Falck
- Department of Biochemistry, University of Texas Southwestern, Dallas, Texas 75390, United States.
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47
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Abstract
Epoxyeicosatrienoic acids (EETs) are synthesized from arachidonic acid and EETs have a number of beneficial cardiovascular actions. This has led to the concept that EETs and its metabolic pathway can be therapeutically targeted for hypertension and other cardiovascular diseases. One approach has been to prevent the conversion of EETs to their inactive diols by inhibiting the soluble epoxide hydrolase (sEH) enzyme. Inhibition of sEH has been demonstrated to decrease blood pressure in certain experimental models of hypertension, decrease inflammation, and protect organs from damage associated with hypertension and other cardiovascular diseases. The development of sEH inhibitors has reached the point where they are being evaluated in humans. A second therapeutic approach has been to develop EET agonists. EET agonists have been essential for determining the structure function relationship for EETs and determining cell-signaling mechanisms by which EETs exert their cardiovascular actions. More recently, EET agonists have been administered chronically to experimental animal models of hypertension and metabolic syndrome and have been demonstrated to decrease blood pressure, improve insulin signaling, and improve vascular function. These experimental findings provide evidence for sEH inhibitors and EET agonists as a therapeutic approach for cardiovascular diseases, hypertension, and the associated end-organ damage.
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Xing L, McDonald JJ, Kolodziej SA, Kurumbail RG, Williams JM, Warren CJ, O’Neal JM, Skepner JE, Roberds SL. Discovery of Potent Inhibitors of Soluble Epoxide Hydrolase by Combinatorial Library Design and Structure-Based Virtual Screening. J Med Chem 2011; 54:1211-22. [PMID: 21302953 DOI: 10.1021/jm101382t] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Li Xing
- Pfizer Global Research and Development, 700 Chesterfield Parkway West, Chesterfield, Missouri 63017, United States
- Pfizer Global Research and Development, 200 CambridgePark Drive, Cambridge, Massachusetts 02140, United States
| | - Joseph J. McDonald
- Pfizer Global Research and Development, 700 Chesterfield Parkway West, Chesterfield, Missouri 63017, United States
| | - Steve A. Kolodziej
- Pfizer Global Research and Development, 700 Chesterfield Parkway West, Chesterfield, Missouri 63017, United States
| | - Ravi G. Kurumbail
- Pfizer Global Research and Development, 700 Chesterfield Parkway West, Chesterfield, Missouri 63017, United States
| | - Jennifer M. Williams
- Pfizer Global Research and Development, 700 Chesterfield Parkway West, Chesterfield, Missouri 63017, United States
| | - Chad J. Warren
- Pfizer Global Research and Development, 700 Chesterfield Parkway West, Chesterfield, Missouri 63017, United States
| | - Janet M. O’Neal
- Pfizer Global Research and Development, 700 Chesterfield Parkway West, Chesterfield, Missouri 63017, United States
| | - Jill E. Skepner
- Pfizer Global Research and Development, 700 Chesterfield Parkway West, Chesterfield, Missouri 63017, United States
| | - Steven L. Roberds
- Pfizer Global Research and Development, 700 Chesterfield Parkway West, Chesterfield, Missouri 63017, United States
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Honetschlägerová Z, Husková Z, Vaňourková Z, Sporková A, Kramer HJ, Hwang SH, Tsai HJ, Hammock BD, Imig JD, Červenka L, Kopkan L. Renal mechanisms contributing to the antihypertensive action of soluble epoxide hydrolase inhibition in Ren-2 transgenic rats with inducible hypertension. J Physiol 2011; 589:207-19. [PMID: 21078594 PMCID: PMC3039270 DOI: 10.1113/jphysiol.2010.199505] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2010] [Accepted: 11/09/2010] [Indexed: 01/01/2023] Open
Abstract
In the present study, we examined the effects of soluble epoxide hydrolase (sEH) inhibition on the development of angiotensin II-dependent hypertension and on renal function in transgenic rats with inducible expression of the mouse renin gene (strain name Cyp1a1-Ren-2). Hypertension was induced in these rats by indole-3-carbinol (I3C; 0.3% in the diet) for 12 days. The sEH inhibitor cis-4-[4-(3-adamantan-1-yl-ureido)-cyclohexyloxy]-benzoic acid (c-AUCB) was given in two doses (13 or 26 mg l-1) in drinking water. Blood pressure (BP), body weight (BW) and renal excretory parameters were monitored in conscious animals during the experiment. Renal haemodynamics was assessed at the end of treatment in anaesthetized rats. I3C administration resulted in severe hypertension with a rise in systolic BP from 118 ± 2 to 202 ± 3 mmHg, a loss of BW from 266 ± 5 to 228 ± 4 g and a rise in proteinuria from 14 ± 2 to 34 ± 3 mg day-1. Both doses of c-AUCB significantly attenuated the development of hypertension (systolic BP of 181 ± 4 and 176 ± 4 mmHg, respectively), the loss in BW (256 ± 4 and 259 ± 3 g, respectively) and the degree of proteinuria (27 ± 2 and 25 ± 3 mg day-1, respectively) to a similar extent. Moreover, c-AUCB prevented the reduction in renal plasma flow (5.4 ± 0.4 vs. 4.6 ± 0.3 ml min-1 g-1) and significantly increased sodium excretion (0.84 ± 0.16 vs. 0.38 ± 0.08 μmol min-1 g-1) during I3C administration. These data suggest that the oral administration of c-AUCB displays antihypertensive effects in Ren-2 transgenic rats with inducible malignant hypertension via an improvement of renal function.
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Affiliation(s)
- Zuzana Honetschlägerová
- Department of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
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50
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Li N, Liu JY, Qiu H, Harris TR, Sirish P, Hammock BD, Chiamvimonvat N. Use of metabolomic profiling in the study of arachidonic acid metabolism in cardiovascular disease. CONGESTIVE HEART FAILURE (GREENWICH, CONN.) 2011; 17:42-6. [PMID: 21272227 PMCID: PMC3583533 DOI: 10.1111/j.1751-7133.2010.00209.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Arachidonic acid is one of the pivotal signaling molecules associated with inflammation, pain and homeostatic function. Drugs specifically targeting these signaling pathways represent more than 25% of annual pharmaceutical sales worldwide. However, chronic administration of nonsteroidal anti-inflammatory drugs (NSAIDs) and rofecoxib (Vioxx), a potent cyclooxygenase-2 inhibitor, have been associated with adverse cardiovascular events. Understanding the possible mechanisms underlying these adverse events is critical for evaluating the risks and benefits of this group of drugs and for development of safer drugs. Using a powerful metabolomics approach, 20-hydroxyeicosatetraenoic acid (20-HETE) was identified among many of arachidonic acid metabolic products as a likely culprit for adverse cardiovascular side effect associated with rofecoxib and NSAIDs. In addition, using a similar metabolomic approach, epoxyeicosatrienoic acids (EETs), which are lipid mediators derived from arachidonic acid through the cytochrome P450 epoxygenase pathway, have been shown to exhibit cardioprotective effects in a murine myocardial infarction (MI) model. Inhibitors of the soluble epoxide hydrolase increase titers of epoxy fatty acids and both block and reverse cardiac hypertrophy in rodent models. These highly potent, orally available compounds may be promising for treating heart failure and other cardiovascular disease. In this review, we will summarize some of the recent advances using metabolomic profiling to gain insights into the involvement of arachidonic acid pathways in cardiovascular disease.
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Affiliation(s)
- Ning Li
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of California, Davis, CA
| | - Jun-Yan Liu
- Department of Entomology and UC Davis Cancer Center, University of California, Davis, CA
| | - Hong Qiu
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of California, Davis, CA
| | - Todd R. Harris
- Department of Entomology and UC Davis Cancer Center, University of California, Davis, CA
| | - Padmini Sirish
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of California, Davis, CA
| | - Bruce D. Hammock
- Department of Entomology and UC Davis Cancer Center, University of California, Davis, CA
| | - Nipavan Chiamvimonvat
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of California, Davis, CA
- Department of Veterans Affairs, Northern California Health Care System Mather, CA
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