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Feng X, Liu X, Wang F, Zhang X, Zhu L, Shu H, Wang C, Duan L, Wang H, Ren Q, Dong F, Zhang Z, Man D, Qu M. Prenatal High-Sucrose Diet Induced Vascular Dysfunction of Renal Interlobar Arteries in the Offspring via PPARγ-RXRg-ROS/Akt Signaling. Mol Nutr Food Res 2024; 68:e2300871. [PMID: 38704749 DOI: 10.1002/mnfr.202300871] [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: 12/07/2023] [Revised: 03/21/2024] [Indexed: 05/07/2024]
Abstract
SCOPE Prenatal nutrition imbalance correlates with developmental origin of cardiovascular diseases; however whether maternal high-sucrose diet (HS) during pregnancy causes vascular damage in renal interlobar arteries (RIA) from offspring still keeps unclear. METHODS AND RESULTS Pregnant rats are fed with normal drinking water or 20% high-sucrose solution during the whole gestational period. Swollen mitochondria and distributed myofilaments are observed in vascular smooth muscle cells of RIA exposed to prenatal HS. Maternal HS increases phenylephrine (PE)-induced vasoconstriction in the RIA from adult offspring. NG-Nitro-l-arginine (L-Name) causes obvious vascular tension in response to PE in offspring from control group, not in HS. RNA-Seq of RIA is performed to reveal that the gene retinoid X receptor g (RXRg) is significantly decreased in the HS group, which could affect vascular function via interacting with PPARγ pathway. By preincubation of RIA with apocynin (NADPH inhibitor) or capivasertib (Akt inhibitor), the results indicate that ROS and Akt are the vital important factors to affect the vascular function of RIA exposure to prenatal HS. CONCLUSION Maternal HS during the pregnancy increases PE-mediated vasoconstriction of RIA from adult offspring, which is mainly related to the enhanced Akt and ROS regulated by the weakened PPARγ-RXRg.
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Affiliation(s)
- Xueqin Feng
- Department of Obstetrics, Affiliated Hospital of Jining Medical University, Guhuai Road 89, Jining, 272001, China
| | - Xinying Liu
- Department of Obstetrics, Affiliated Hospital of Jining Medical University, Guhuai Road 89, Jining, 272001, China
- Department of Clinical Medicine, Jining Medical University, Jining, 272001, China
| | - Fuling Wang
- Department of Obstetrics, Affiliated Hospital of Jining Medical University, Guhuai Road 89, Jining, 272001, China
| | - Xiaoyun Zhang
- Department of Obstetrics, Affiliated Hospital of Jining Medical University, Guhuai Road 89, Jining, 272001, China
| | - Liangxi Zhu
- Department of Obstetrics, Affiliated Hospital of Jining Medical University, Guhuai Road 89, Jining, 272001, China
| | - Hua Shu
- Department of Obstetrics, Affiliated Hospital of Jining Medical University, Guhuai Road 89, Jining, 272001, China
| | - Chunxia Wang
- Department of Obstetrics, Affiliated Hospital of Jining Medical University, Guhuai Road 89, Jining, 272001, China
| | - Liting Duan
- Department of Obstetrics, Affiliated Hospital of Jining Medical University, Guhuai Road 89, Jining, 272001, China
| | - Haixia Wang
- Department of Obstetrics, Affiliated Hospital of Jining Medical University, Guhuai Road 89, Jining, 272001, China
| | - Qinggui Ren
- Department of Mammary gland Surgery, Affiliated Hospital of Jining Medical University, Jining, 272001, China
| | - Fangxiang Dong
- Department of Obstetrics, Affiliated Hospital of Jining Medical University, Guhuai Road 89, Jining, 272001, China
| | - Ziteng Zhang
- Departments of Thoracic Surgery, Qinghai Red Cross Hospital, Xining, 272001, China
| | - Dongmei Man
- Department of Obstetrics, Affiliated Hospital of Jining Medical University, Guhuai Road 89, Jining, 272001, China
| | - Miaomiao Qu
- Department of Obstetrics, Affiliated Hospital of Jining Medical University, Guhuai Road 89, Jining, 272001, China
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Pascale JV, Wolf A, Kadish Y, Diegisser D, Kulaprathazhe MM, Yemane D, Ali S, Kim N, Baruch DE, Yahaya MAF, Dirice E, Adebesin AM, Falck JR, Schwartzman ML, Garcia V. 20-Hydroxyeicosatetraenoic acid (20-HETE): Bioactions, receptors, vascular function, cardiometabolic disease and beyond. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2023; 97:229-255. [PMID: 37236760 PMCID: PMC10683332 DOI: 10.1016/bs.apha.2023.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Abstract
Vascular function is dynamically regulated and dependent on a bevy of cell types and factors that work in concert across the vasculature. The vasoactive eicosanoid, 20-Hydroxyeicosatetraenoic acid (20-HETE) is a key player in this system influencing the sensitivity of the vasculature to constrictor stimuli, regulating endothelial function, and influencing the renin angiotensin system (RAS), as well as being a driver of vascular remodeling independent of blood pressure elevations. Several of these bioactions are accomplished through the ligand-receptor pairing between 20-HETE and its high-affinity receptor, GPR75. This 20-HETE axis is at the root of various vascular pathologies and processes including ischemia induced angiogenesis, arteriogenesis, septic shock, hypertension, atherosclerosis, myocardial infarction and cardiometabolic diseases including diabetes and insulin resistance. Pharmacologically, several preclinical tools have been developed to disrupt the 20-HETE axis including 20-HETE synthesis inhibitors (DDMS and HET0016), synthetic 20-HETE agonist analogues (20-5,14-HEDE and 20-5,14-HEDGE) and 20-HETE receptor blockers (AAA and 20-SOLA). Systemic or cell-specific therapeutic targeting of the 20-HETE-GPR75 axis continues to be an invaluable approach as studies examine the molecular underpinnings activated by 20-HETE under various physiological settings. In particular, the development and characterization of 20-HETE receptor blockers look to be a promising new class of compounds that can provide a considerable benefit to patients suffering from these cardiovascular pathologies.
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Affiliation(s)
- Jonathan V Pascale
- Department of Pharmacology, New York Medical College, Valhalla, NY, United States
| | - Alexandra Wolf
- Department of Pharmacology, New York Medical College, Valhalla, NY, United States
| | - Yonaton Kadish
- School of Medicine, New York Medical College, Valhalla, NY, United States
| | - Danielle Diegisser
- Department of Pharmacology, New York Medical College, Valhalla, NY, United States
| | | | - Danait Yemane
- Department of Pharmacology, New York Medical College, Valhalla, NY, United States
| | - Samir Ali
- School of Medicine, New York Medical College, Valhalla, NY, United States
| | - Namhee Kim
- School of Medicine, New York Medical College, Valhalla, NY, United States
| | - David E Baruch
- School of Medicine, New York Medical College, Valhalla, NY, United States
| | - Muhamad Afiq Faisal Yahaya
- Department of Basic Sciences, MAHSA University, Selangor Darul Ehsan, Malaysia; Department of Human Anatomy, Universiti Putra Malaysia (UPM), Selangor Darul Ehsan, Malaysia
| | - Ercument Dirice
- Department of Pharmacology, New York Medical College, Valhalla, NY, United States
| | - Adeniyi M Adebesin
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - John R Falck
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Michal L Schwartzman
- Department of Pharmacology, New York Medical College, Valhalla, NY, United States
| | - Victor Garcia
- Department of Pharmacology, New York Medical College, Valhalla, NY, United States.
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Wang H, Liu C, Zhang X, Xiu T, Li P, Zhang W, Zhang W, Wang X, Liu Z, Tang B. Simultaneous fluorescence imaging of Golgi O 2•- and Golgi H 2O 2 in mice with hypertension. Biosens Bioelectron 2022; 213:114480. [PMID: 35738216 DOI: 10.1016/j.bios.2022.114480] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/01/2022] [Accepted: 06/09/2022] [Indexed: 11/17/2022]
Abstract
Hypertensive cardiovascular disease is a persistent threat to public health. Elucidating the pathogenesis of hypertension is expected to provide more highly targeted therapies for patients. To date, reactive oxygen species (ROS) induced endothelial nitric oxide synthase (eNOS) uncoupling are generally considered to be common phenomena in hypertension. However, the critical factor contribute to persistent eNOS uncoupling remains poorly understood. Herein, we established a fluorescence probe, GolROS, for the multicolored and simultaneous detection of Golgi O2•- and H2O2 in situ. We successfully detected increases in Golgi ROS levels in hypertensive mice and evaluated the pharmaceutical effects of various antihypertensive drugs. More importantly, we identified the ROS post-transcriptional modification sites on dihydrofolate reductase (DHFR). Altogether, we propose a novel therapeutic target for hypertension, which will promote the development of new antihypertensive drugs, and also developed an ideal fluorescence probe to study in situ Golgi O2•- and H2O2 changes in various biochemical processes.
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Affiliation(s)
- Hui Wang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Minis-try of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, People's Republic of China.
| | - Cuifang Liu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Minis-try of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Xiaoting Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Minis-try of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Tiancong Xiu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Minis-try of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Ping Li
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Minis-try of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, People's Republic of China.
| | - Wei Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Minis-try of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Wen Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Minis-try of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Xin Wang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Minis-try of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Zhenzhen Liu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Minis-try of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Minis-try of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institutes of Biomedical Sciences, Shandong Normal University, Jinan, 250014, People's Republic of China.
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McGurk KA, Farrell L, Kendall AC, Keavney BD, Nicolaou A. Genetic analyses of circulating PUFA-derived mediators identifies heritable dihydroxyeicosatrienoic acid species. Prostaglandins Other Lipid Mediat 2022; 160:106638. [PMID: 35472599 DOI: 10.1016/j.prostaglandins.2022.106638] [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: 12/13/2021] [Revised: 03/30/2022] [Accepted: 04/20/2022] [Indexed: 10/18/2022]
Abstract
Estimates of heritability are the first step in identifying a trait with substantial variation due to genetic factors. Large-scale genetic analyses can identify the DNA variants that influence the levels of circulating lipid species and the statistical technique Mendelian randomisation can use these DNA variants to address potential causality of these lipids in disease. We estimated the heritability of plasma eicosanoids, octadecanoids and docosanoids to identify those lipid species with substantial heritability. We analysed plasma lipid mediators in 31 White British families (196 participants) ascertained for high blood pressure and deeply clinically and biochemically phenotyped over a 25-year period. We found that the dihydroxyeicosatrienoic acid (DHET) species, 11,12-DHET and 14,15-DHET, products of arachidonic acid metabolism by cytochrome P450 (CYP) monooxygenase and soluble epoxide hydrolase (sEH), exhibited substantial heritability (h2 = 33%-37%; Padj<0.05). Identification of these two heritable bioactive lipid species allows for future large-scale, targeted, lipidomics-genomics analyses to address causality in cardiovascular and other diseases.
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Affiliation(s)
- Kathryn A McGurk
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK; Laboratory for Lipidomics and Lipid Research, Division of Pharmacy and Optometry, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Laura Farrell
- Laboratory for Lipidomics and Lipid Research, Division of Pharmacy and Optometry, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Alexandra C Kendall
- Laboratory for Lipidomics and Lipid Research, Division of Pharmacy and Optometry, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Bernard D Keavney
- Manchester Heart Centre, Manchester University NHS Foundation Trust, UK
| | - Anna Nicolaou
- Laboratory for Lipidomics and Lipid Research, Division of Pharmacy and Optometry, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.
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Agostinucci K, Hutcheson R, Hossain S, Pascale JV, Villegas E, Zhang F, Adebesin AM, Falck JR, Gupte S, Garcia V, Schwartzman ML. Blockade of 20-hydroxyeicosatetraenoic acid receptor lowers blood pressure and alters vascular function in mice with smooth muscle-specific overexpression of CYP4A12-20-HETE synthase. J Hypertens 2022; 40:498-511. [PMID: 35081581 PMCID: PMC8820380 DOI: 10.1097/hjh.0000000000003038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE 20-Hydroxyeicosatetraenoic acid (20-HETE) is a vasoactive eicosanoid exhibiting effects on vascular smooth muscle cell (VSMC) via G-protein coupled receptor 75 (GPR75) and include stimulation of contractility, migration, and growth. We examined whether VSMC-targeted overexpression of CYP4A12, the primary 20-HETE-producing enzyme in mice, is sufficient to promote hypertension. METHODS Mice with VSM-specific Cyp4a12 overexpression (Myh11-4a12) and their littermate controls (WT) were generated by crossbreeding Cyp4a12-floxed with Myh11-Cre mice. The 20-HETE receptor blocker, N-disodium succinate-20-hydroxyeicosa-6(Z),15(Z)-diencarboxamide (AAA), was administered in the drinking water. Experiments were carried out for 12 days. SBP was measured by tail cuff. Renal interlobar and mesenteric arteries were harvested for assessment of gene expression, 20-HETE levels, vascular contractility, vasodilation, and remodeling. RESULTS Vascular and circulatory levels of 20-HETE were several folds higher in Myh11-4a12 mice compared with WT. The Myh11-4a12 mice compared with WT were hypertensive (145 ± 2 vs. 127 ± 2 mmHg; P < 0.05) and their vasculature displayed a contractile phenotype exemplified by increased contractility, reduced vasodilatory capacity, and increased media to lumen ratio. All these features were reversed by the administration of AAA. The mechanism of increased contractility includes, at least in part, Rho-kinase activation followed by increased myosin light chain phosphorylation and activation of the contractile apparatus. CONCLUSION VSM-specific Cyp4a12 overexpression is sufficient to alter VSM cell phenotype through changes in contractile markers and enhancement in contractility that promote hypertension and vascular dysfunction in a 20-HETE-dependent manner. The 20-HETE receptor GPR75 may represent a novel target for the treatment of hypertension and associated vascular conditions.
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Affiliation(s)
- Kevin Agostinucci
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, NY 10595
| | - Rebecca Hutcheson
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, NY 10595
| | - Sakib Hossain
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, NY 10595
| | - Jonathan V. Pascale
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, NY 10595
| | - Elizabeth Villegas
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, NY 10595
| | - Frank Zhang
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, NY 10595
| | | | - John R. Falck
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Sachin Gupte
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, NY 10595
| | - Victor Garcia
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, NY 10595
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Froogh G, Garcia V, Laniado Schwartzman M. The CYP/20-HETE/GPR75 axis in hypertension. ADVANCES IN PHARMACOLOGY 2022; 94:1-25. [PMID: 35659370 PMCID: PMC10123763 DOI: 10.1016/bs.apha.2022.02.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
20-Hydroxyeicosatetraenoic acid (20-HETE) is a bioactive lipid generated from the ω-hydroxylation of arachidonic acid (AA) by enzymes of the cytochrome P450 (CYP) family, primarily the CYP4A and CYP4F subfamilies. 20-HETE is most notably identified as a modulator of vascular tone, regulator of renal function, and a contributor to the onset and development of hypertension and cardiovascular disease. 20-HETE-mediated signaling promotes hypertension by sensitizing the vasculature to constrictor stimuli, inducing endothelial dysfunction, and potentiating vascular inflammation. These bioactions are driven by the activation of the G-protein coupled receptor 75 (GPR75), a 20-HETE receptor (20HR). Given the capacity of 20-HETE signaling to drive pro-hypertensive mechanisms, the CYP/20-HETE/GPR75 axis has the potential to be a significant therapeutic target for the treatment of hypertension and cardiovascular diseases associated with increases in blood pressure. In this chapter, we review 20-HETE-mediated cellular mechanisms that promote hypertension, highlight important data in humans such as genetic variants in the CYP genes that potentiate 20-HETE production and describe recent findings in humans with 20HR/GPR75 mutations. Special emphasis is given to the 20HR and respective receptor blockers that have the potential to pave a path to translational and clinical studies for the treatment of 20-HETE-driven hypertension, and obesity/metabolic syndrome.
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20-HETE interferes with insulin signaling and contributes to obesity-driven insulin resistance. Prostaglandins Other Lipid Mediat 2020; 152:106485. [PMID: 33011364 DOI: 10.1016/j.prostaglandins.2020.106485] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/17/2020] [Accepted: 09/23/2020] [Indexed: 12/15/2022]
Abstract
20-HETE, a metabolite of arachidonic acid produced by Cytochrome P450 (CYP) 4A/4 F, has been implicated in the development of obesity-associated complications such as diabetes and insulin resistance. In this study, we examined whether the acute elevation of 20-HETE levels contributes to the development of diet-driven hyperglycemia and insulin resistance. We employed a conditional transgenic mouse model to overexpress Cyp4a12 (Cyp4a12tg), a murine 20-HETE synthase, together with high fat diet (HFD) feeding. Mice in which Cyp4a12 was induced by doxycycline (DOX) at the onset of HFD feeding gained weight at a greater rate and extent than corresponding DOX-untreated Cyp4a12 mice. Cyp4a12tg mice fed HFD + DOX displayed hyperglycemia and impaired glucose metabolism while corresponding HFD-fed Cyp4a12tg mice (no DOX) did not. Importantly, administration of a 20-HETE antagonist, 20-SOLA, to Cyp4a12tg mice fed HFD + DOX significantly attenuated weight gain and prevented the development of hyperglycemia and impaired glucose metabolism. Levels of insulin receptor (IR) phosphorylation at Tyrosine 972 and insulin receptor substrate-1 (IRS1) phosphorylation at serine 307 were markedly decreased and increased, respectively, in liver, skeletal muscle and adipose tissues from Cyp4a12tg mice fed HFD + DOX; 20-SOLA prevented the IR and IRS1 inactivation, suggesting that 20-HETE interferes with insulin signaling. Additional studies in 3T3-1 differentiated adipocytes confirmed that 20-HETE impairs insulin signaling and that its effect may require activation of its receptor GPR75. Taken together, these results provide strong evidence that 20-HETE interferes with insulin function and contributed to diet-driven insulin resistance.
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Levitskaya ES, Batyushin MM, Chistyakov VA, Razina AV, Dudarev IV. Role of remodeling of small diameter kidney arteries in the prognosis of progression of tubulointerstitial fibrosis in patients with chronic glomerulonephritis. КАРДИОВАСКУЛЯРНАЯ ТЕРАПИЯ И ПРОФИЛАКТИКА 2019. [DOI: 10.15829/1728-8800-2019-3-62-68] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Aim. To assess the role of remodeling of small diameter kidney arteries in the prognosis of progression of tubulointerstitial fibrosis in patients with chronic glomerulonephritis.Material and methods. The study involved 97 patients with primary glomerulonephritis. The average age of patients was 37,27±1,2 years. The inclusion criterion was the presence of indications for renal biopsy. Renal biopsy was used to analyze renal tissue, in particular, for determining of tubulointerstitial fibrosis (TIF). Based on TIF sign, the patients were divided in 2 groups. The first group includes patients with TIF, the second — without TIF. Vasometry, a measurement of the renal arteries structures, was performed as part of renal biopsy. Parameters of internal and external diameters, wall thickness, intima, media, intima-media complex, vascular mass were analyzed.Results. The influence of the size of the inner and outer diameters of the interlobular artery (MA) on the studied risk was established. Probability of TIF developing increases with decreasing of MA inner diameter (χ2-criterion =5,34, p=0,02) and increasing of MA outer diameter (χ2-criterion =7,77, p=0,005). Intimal thickness does not have a statistically significant effect on the risk of TIF developing (p=0,29), whereas media thickness has a high statistical significance in renal tissue remodeling (χ2-criterion =13,71, p=0,0002). A statistically significant effect of an increase in the vascular mass on the risk of TIF was determined (χ2-criterion =6,55, p=0,01).Conclusion. We established that changes in the structure of small diameter kidney arteries in chronic glomerulonephritis occurs according to a hypertrophic type. Remodeling of small diameter kidney arteries plays significant role on the risk of TIF.
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Abstract
20-HETE, the ω-hydroxylation product of arachidonic acid catalyzed by enzymes of the cytochrome P450 (CYP) 4A and 4F gene families, is a bioactive lipid mediator with potent effects on the vasculature including stimulation of smooth muscle cell contractility, migration and proliferation as well as activation of endothelial cell dysfunction and inflammation. Clinical studies have shown elevated levels of plasma and urinary 20-HETE in human diseases and conditions such as hypertension, obesity and metabolic syndrome, myocardial infarction, stroke, and chronic kidney diseases. Studies of polymorphic associations also suggest an important role for 20-HETE in hypertension, stroke and myocardial infarction. Animal models of increased 20-HETE production are hypertensive and are more susceptible to cardiovascular injury. The current review summarizes recent findings that focus on the role of 20-HETE in the regulation of vascular and cardiac function and its contribution to the pathology of vascular and cardiac diseases.
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Affiliation(s)
- Petra Rocic
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, NY, United States
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10
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Pandey V, Garcia V, Gilani A, Mishra P, Zhang FF, Paudyal MP, Falck JR, Nasjletti A, Wang WH, Schwartzman ML. The Blood Pressure-Lowering Effect of 20-HETE Blockade in Cyp4a14(-/-) Mice Is Associated with Natriuresis. J Pharmacol Exp Ther 2017; 363:412-418. [PMID: 28912346 PMCID: PMC5698946 DOI: 10.1124/jpet.117.243618] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 09/13/2017] [Indexed: 01/22/2023] Open
Abstract
20-Hydroxy-5,8,11,14-eicosatetraenoic acid (20-HETE) has been linked to pro-hypertensive and anti-hypertensive actions through its ability to promote vasoconstriction and inhibit Na transport in the ascending limb of the loop of Henle, respectively. In this study, we assessed the effects of 20-HETE blockade on blood pressure, renal hemodynamics, and urinary sodium excretion in Cyp4a14(-/-) male mice, which display androgen-driven 20-HETE-dependent hypertension. Administration of 2,5,8,11,14,17-hexaoxanonadecan-19-yl 20-hydroxyicosa-6(Z),15(Z)-dienoate (20-SOLA), a water-soluble 20-HETE antagonist, in the drinking water normalized the blood pressure of male Cyp4a14(-/-) hypertensive mice (±124 vs. ±153 mmHg) while having no effect on age-matched normotensive wild-type (WT) male mice. Hypertension in Cyp4a14(-/-) male mice was accompanied by decreased renal perfusion and reduced glomerular filtration rates, which were corrected by treatment with 20-SOLA. Interestingly, Cyp4a14(-/-) male mice treated with 20-SOLA displayed increased urinary sodium excretion that was paralleled by the reduction of blood pressure suggestive of an antinatriuretic activity of endogenous 20-HETE in the hypertensive mice. This interpretation is in line with the observation that the natriuretic response to acute isotonic saline loading in hypertensive Cyp4a14(-/-) male mice was significantly impaired relative to that in WT mice; this impairment was corrected by 20-SOLA treatment. Hence, endogenous 20-HETE appears to promote sodium conservation in hypertensive Cyp4a14(-/-) male mice, presumably, as a result of associated changes in renal hemodynamics and/or direct stimulatory action on tubular sodium reabsorption.
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Affiliation(s)
- Varunkumar Pandey
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York (V.P., V.G., A.G., P.M., F.F.Z., A.N., W.-H.W., M.L.S.); and Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas (M.P.P., J.R.F.)
| | - Victor Garcia
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York (V.P., V.G., A.G., P.M., F.F.Z., A.N., W.-H.W., M.L.S.); and Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas (M.P.P., J.R.F.)
| | - Ankit Gilani
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York (V.P., V.G., A.G., P.M., F.F.Z., A.N., W.-H.W., M.L.S.); and Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas (M.P.P., J.R.F.)
| | - Priyanka Mishra
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York (V.P., V.G., A.G., P.M., F.F.Z., A.N., W.-H.W., M.L.S.); and Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas (M.P.P., J.R.F.)
| | - Frank Fan Zhang
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York (V.P., V.G., A.G., P.M., F.F.Z., A.N., W.-H.W., M.L.S.); and Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas (M.P.P., J.R.F.)
| | - Mahesh P Paudyal
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York (V.P., V.G., A.G., P.M., F.F.Z., A.N., W.-H.W., M.L.S.); and Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas (M.P.P., J.R.F.)
| | - John R Falck
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York (V.P., V.G., A.G., P.M., F.F.Z., A.N., W.-H.W., M.L.S.); and Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas (M.P.P., J.R.F.)
| | - Alberto Nasjletti
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York (V.P., V.G., A.G., P.M., F.F.Z., A.N., W.-H.W., M.L.S.); and Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas (M.P.P., J.R.F.)
| | - Wen-Hui Wang
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York (V.P., V.G., A.G., P.M., F.F.Z., A.N., W.-H.W., M.L.S.); and Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas (M.P.P., J.R.F.)
| | - Michal Laniado Schwartzman
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York (V.P., V.G., A.G., P.M., F.F.Z., A.N., W.-H.W., M.L.S.); and Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas (M.P.P., J.R.F.)
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Wawrzyniak R, Mpanga AY, Struck-Lewicka W, Kordalewska M, Polonis K, Patejko M, Mironiuk M, Szyndler A, Chrostowska M, Hoffmann M, Smoleński RT, Kaliszan R, Narkiewicz K, Markuszewski MJ. Untargeted Metabolomics Provides Insight into the Mechanisms Underlying Resistant Hypertension. Curr Med Chem 2017; 26:232-243. [PMID: 28990522 DOI: 10.2174/0929867324666171006122656] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 08/05/2016] [Accepted: 09/20/2016] [Indexed: 11/22/2022]
Abstract
BACKGROUND Resistant hypertension (RH) affects about 15-20% of treated hypertensive patients worldwide. RH increases the risk of cardiovascular events such as myocardial infarction and stroke by 50%. The pathological mechanisms underlying resistance to treatment are still poorly understood. OBJECTIVE The main goal of this pilot study was to determine and compare plasma metabolomic profiles in resistant and non-resistant hypertensive patients. METHODS We applied untargeted metabolomic profiling in plasma samples collected from 69 subjects with RH and 81 subjects with controlled hypertension. To confirm patients' compliance to antihypertensive treatment, levels of selected drugs and their metabolites were determined in plasma samples with the LC-ESI-TOF/MS technique. RESULTS The results showed no statistically significant differences in the administration of antihypertensive drug in the compared groups. We identified 19 up-regulated and 13 downregulated metabolites in the RH. CONCLUSION The metabolites altered in RH are linked to oxidative stress and inflammation, endothelium dysfunction, vasoconstriction and cell proliferation. Our results may generate new hypothesis about RH development and progression.
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Affiliation(s)
- Renata Wawrzyniak
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416, Gdansk, Poland
| | - Arlette Yumba Mpanga
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416, Gdansk, Poland
| | - Wiktoria Struck-Lewicka
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416, Gdansk, Poland
| | - Marta Kordalewska
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416, Gdansk, Poland
| | - Katarzyna Polonis
- Department of Hypertension and Diabetology, Medical University of Gdansk, Debinki 7c, 80-211 Gdansk, Poland
| | - Małgorzata Patejko
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416, Gdansk, Poland
| | - Monika Mironiuk
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416, Gdansk, Poland
| | - Anna Szyndler
- Department of Hypertension and Diabetology, Medical University of Gdansk, Debinki 7c, 80-211 Gdansk, Poland
| | - Marzena Chrostowska
- Department of Hypertension and Diabetology, Medical University of Gdansk, Debinki 7c, 80-211 Gdansk, Poland
| | - Michał Hoffmann
- Department of Hypertension and Diabetology, Medical University of Gdansk, Debinki 7c, 80-211 Gdansk, Poland
| | - Ryszard T Smoleński
- Department of Biochemistry, Medical University of Gdansk, Debinki 1, 80-211 Gdansk, Poland
| | - Roman Kaliszan
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416, Gdansk, Poland
| | - Krzysztof Narkiewicz
- Department of Hypertension and Diabetology, Medical University of Gdansk, Debinki 7c, 80-211 Gdansk, Poland.,International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Michał J Markuszewski
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416, Gdansk, Poland
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12
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Garcia V, Gilani A, Shkolnik B, Pandey V, Zhang FF, Dakarapu R, Gandham SK, Reddy NR, Graves JP, Gruzdev A, Zeldin DC, Capdevila JH, Falck JR, Schwartzman ML. 20-HETE Signals Through G-Protein-Coupled Receptor GPR75 (G q) to Affect Vascular Function and Trigger Hypertension. Circ Res 2017; 120:1776-1788. [PMID: 28325781 DOI: 10.1161/circresaha.116.310525] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 03/03/2017] [Accepted: 03/20/2017] [Indexed: 12/31/2022]
Abstract
RATIONALE 20-Hydroxyeicosatetraenoic acid (20-HETE), one of the principle cytochrome P450 eicosanoids, is a potent vasoactive lipid whose vascular effects include stimulation of smooth muscle contractility, migration, and proliferation, as well as endothelial cell dysfunction and inflammation. Increased levels of 20-HETE in experimental animals and in humans are associated with hypertension, stroke, myocardial infarction, and vascular diseases. OBJECTIVE To date, a receptor/binding site for 20-HETE has been implicated based on the use of specific agonists and antagonists. The present study was undertaken to identify a receptor to which 20-HETE binds and through which it activates a signaling cascade that culminates in many of the functional outcomes attributed to 20-HETE in vitro and in vivo. METHODS AND RESULTS Using crosslinking analogs, click chemistry, binding assays, and functional assays, we identified G-protein receptor 75 (GPR75), currently an orphan G-protein-coupled receptor (GPCR), as a specific target of 20-HETE. In cultured human endothelial cells, 20-HETE binding to GPR75 stimulated Gαq/11 protein dissociation and increased inositol phosphate accumulation and GPCR-kinase interacting protein-1-GPR75 binding, which further facilitated the c-Src-mediated transactivation of epidermal growth factor receptor. This results in downstream signaling pathways that induce angiotensin-converting enzyme expression and endothelial dysfunction. Knockdown of GPR75 or GPCR-kinase interacting protein-1 prevented 20-HETE-mediated endothelial growth factor receptor phosphorylation and angiotensin-converting enzyme induction. In vascular smooth muscle cells, GPR75-20-HETE pairing is associated with Gαq/11- and GPCR-kinase interacting protein-1-mediated protein kinase C-stimulated phosphorylation of MaxiKβ, linking GPR75 activation to 20-HETE-mediated vasoconstriction. GPR75 knockdown in a mouse model of 20-HETE-dependent hypertension prevented blood pressure elevation and 20-HETE-mediated increases in angiotensin-converting enzyme expression, endothelial dysfunction, smooth muscle contractility, and vascular remodeling. CONCLUSIONS This is the first report to identify a GPCR target for an eicosanoid of this class. The discovery of 20-HETE-GPR75 pairing presented here provides the molecular basis for the signaling and pathophysiological functions mediated by 20-HETE in hypertension and cardiovascular diseases.
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Affiliation(s)
- Victor Garcia
- From the Department of Pharmacology, New York Medical College School of Medicine, Valhalla (V.G., A.G., B.S., V.P., F.F.Z., M.L.S.); Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas (R.D., S.K.G., N.R.R., J.R.F.); Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC (J.P.G., A.G., D.C.Z.); and Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (J.H.C.)
| | - Ankit Gilani
- From the Department of Pharmacology, New York Medical College School of Medicine, Valhalla (V.G., A.G., B.S., V.P., F.F.Z., M.L.S.); Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas (R.D., S.K.G., N.R.R., J.R.F.); Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC (J.P.G., A.G., D.C.Z.); and Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (J.H.C.)
| | - Brian Shkolnik
- From the Department of Pharmacology, New York Medical College School of Medicine, Valhalla (V.G., A.G., B.S., V.P., F.F.Z., M.L.S.); Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas (R.D., S.K.G., N.R.R., J.R.F.); Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC (J.P.G., A.G., D.C.Z.); and Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (J.H.C.)
| | - Varunkumar Pandey
- From the Department of Pharmacology, New York Medical College School of Medicine, Valhalla (V.G., A.G., B.S., V.P., F.F.Z., M.L.S.); Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas (R.D., S.K.G., N.R.R., J.R.F.); Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC (J.P.G., A.G., D.C.Z.); and Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (J.H.C.)
| | - Frank Fan Zhang
- From the Department of Pharmacology, New York Medical College School of Medicine, Valhalla (V.G., A.G., B.S., V.P., F.F.Z., M.L.S.); Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas (R.D., S.K.G., N.R.R., J.R.F.); Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC (J.P.G., A.G., D.C.Z.); and Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (J.H.C.)
| | - Rambabu Dakarapu
- From the Department of Pharmacology, New York Medical College School of Medicine, Valhalla (V.G., A.G., B.S., V.P., F.F.Z., M.L.S.); Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas (R.D., S.K.G., N.R.R., J.R.F.); Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC (J.P.G., A.G., D.C.Z.); and Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (J.H.C.)
| | - Shyam K Gandham
- From the Department of Pharmacology, New York Medical College School of Medicine, Valhalla (V.G., A.G., B.S., V.P., F.F.Z., M.L.S.); Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas (R.D., S.K.G., N.R.R., J.R.F.); Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC (J.P.G., A.G., D.C.Z.); and Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (J.H.C.)
| | - N Rami Reddy
- From the Department of Pharmacology, New York Medical College School of Medicine, Valhalla (V.G., A.G., B.S., V.P., F.F.Z., M.L.S.); Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas (R.D., S.K.G., N.R.R., J.R.F.); Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC (J.P.G., A.G., D.C.Z.); and Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (J.H.C.)
| | - Joan P Graves
- From the Department of Pharmacology, New York Medical College School of Medicine, Valhalla (V.G., A.G., B.S., V.P., F.F.Z., M.L.S.); Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas (R.D., S.K.G., N.R.R., J.R.F.); Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC (J.P.G., A.G., D.C.Z.); and Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (J.H.C.)
| | - Artiom Gruzdev
- From the Department of Pharmacology, New York Medical College School of Medicine, Valhalla (V.G., A.G., B.S., V.P., F.F.Z., M.L.S.); Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas (R.D., S.K.G., N.R.R., J.R.F.); Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC (J.P.G., A.G., D.C.Z.); and Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (J.H.C.)
| | - Darryl C Zeldin
- From the Department of Pharmacology, New York Medical College School of Medicine, Valhalla (V.G., A.G., B.S., V.P., F.F.Z., M.L.S.); Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas (R.D., S.K.G., N.R.R., J.R.F.); Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC (J.P.G., A.G., D.C.Z.); and Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (J.H.C.)
| | - Jorge H Capdevila
- From the Department of Pharmacology, New York Medical College School of Medicine, Valhalla (V.G., A.G., B.S., V.P., F.F.Z., M.L.S.); Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas (R.D., S.K.G., N.R.R., J.R.F.); Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC (J.P.G., A.G., D.C.Z.); and Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (J.H.C.)
| | - John R Falck
- From the Department of Pharmacology, New York Medical College School of Medicine, Valhalla (V.G., A.G., B.S., V.P., F.F.Z., M.L.S.); Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas (R.D., S.K.G., N.R.R., J.R.F.); Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC (J.P.G., A.G., D.C.Z.); and Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (J.H.C.)
| | - Michal Laniado Schwartzman
- From the Department of Pharmacology, New York Medical College School of Medicine, Valhalla (V.G., A.G., B.S., V.P., F.F.Z., M.L.S.); Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas (R.D., S.K.G., N.R.R., J.R.F.); Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC (J.P.G., A.G., D.C.Z.); and Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (J.H.C.).
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13
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Guengerich FP. Intersection of the Roles of Cytochrome P450 Enzymes with Xenobiotic and Endogenous Substrates: Relevance to Toxicity and Drug Interactions. Chem Res Toxicol 2017; 30:2-12. [PMID: 27472660 PMCID: PMC5293730 DOI: 10.1021/acs.chemrestox.6b00226] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Today much is known about cytochrome P450 (P450) enzymes and their catalytic specificity, but the range of reactions catalyzed by each still continues to surprise. Historically, P450s had been considered to be involved in either the metabolism of xenobiotics or endogenous chemicals, in the former case playing a generally protective role and in the latter case a defined physiological role. However, the line of demarcation is sometimes blurred. It is difficult to be completely specific in drug design, and some P450s involved in the metabolism of steroids and vitamins can be off-targets. In a number of cases, drugs have been developed that act on some of those P450s as primary targets, e.g., steroid aromatase inhibitors. Several of the P450s involved in the metabolism of endogenous substrates are less specific than once thought and oxidize several related structures. Some of the P450s that primarily oxidize endogenous chemicals have been shown to oxidize xenobiotic chemicals, even in a bioactivation mode.
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Affiliation(s)
- F Peter Guengerich
- Department of Biochemistry, Vanderbilt University School of Medicine , Nashville, Tennessee 37232-0146, United States
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14
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Omega-3 fatty acids and cytochrome P450-derived eicosanoids in cardiovascular diseases: Which actions and interactions modulate hemodynamics? Prostaglandins Other Lipid Mediat 2017; 128-129:34-42. [DOI: 10.1016/j.prostaglandins.2017.01.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 01/05/2017] [Accepted: 01/18/2017] [Indexed: 12/24/2022]
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15
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Joseph G, Soler A, Hutcheson R, Hunter I, Bradford C, Hutcheson B, Gotlinger KH, Jiang H, Falck JR, Proctor S, Schwartzman ML, Rocic P. Elevated 20-HETE impairs coronary collateral growth in metabolic syndrome via endothelial dysfunction. Am J Physiol Heart Circ Physiol 2016; 312:H528-H540. [PMID: 28011587 PMCID: PMC5402017 DOI: 10.1152/ajpheart.00561.2016] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 10/31/2016] [Accepted: 11/15/2016] [Indexed: 12/19/2022]
Abstract
Coronary collateral growth (CCG) is impaired in metabolic syndrome (MetS). microRNA-145 (miR-145-Adv) delivery to our rat model of MetS (JCR) completely restored and neutrophil depletion significantly improved CCG. We determined whether low endogenous levels of miR-145 in MetS allowed for elevated production of 20-hydroxyeicosatetraenoic acid (20-HETE), which, in turn, resulted in excessive neutrophil accumulation and endothelial dysfunction leading to impaired CCG. Rats underwent 0-9 days of repetitive ischemia (RI). RI-induced cardiac CYP4F (neutrophil-specific 20-HETE synthase) expression and 20-HETE levels were increased (4-fold) in JCR vs. normal rats. miR-145-Adv and 20-HETE antagonists abolished and neutrophil depletion (blocking antibodies) reduced (~60%) RI-induced increases in CYP4F expression and 20-HETE production in JCR rats. Impaired CCG in JCR rats (collateral-dependent blood flow using microspheres) was completely restored by 20-HETE antagonists [collateral-dependent zone (CZ)/normal zone (NZ) flow ratio was 0.76 ± 0.07 in JCR + 20-SOLA, 0.84 ± 0.05 in JCR + 20-HEDGE vs. 0.11 ± 0.02 in JCR vs. 0.84 ± 0.03 in normal rats]. In JCR rats, elevated 20-HETE was associated with excessive expression of endothelial adhesion molecules and neutrophil infiltration, which were reversed by miR-145-Adv. Endothelium-dependent vasodilation of coronary arteries, endothelial nitric oxide synthase (eNOS) Ser1179 phosphorylation, eNOS-dependent NO·- production and endothelial cell survival were compromised in JCR rats. These parameters of endothelial dysfunction were completely reversed by 20-HETE antagonism or miR-145-Adv delivery, whereas neutrophil depletion resulted in partial reversal (~70%). We conclude that low miR-145 in MetS allows for increased 20-HETE, mainly from neutrophils, which compromises endothelial cell survival and function leading to impaired CCG. 20-HETE antagonists could provide viable therapy for restoration of CCG in MetS.NEW & NOTEWORTHY Elevated 20-hydroxyeicosatetraenoic acid (20-HETE) impairs coronary collateral growth (CCG) in metabolic syndrome by eliciting endothelial dysfunction and apoptosis via excessive neutrophil infiltration. 20-HETE antagonists completely restore coronary collateral growth in metabolic syndrome. microRNA-145 (miR-145) is an upstream regulator of 20-HETE production in metabolic syndrome; low expression of miR-145 in metabolic syndrome promotes elevated production of 20-HETE.
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Affiliation(s)
- Gregory Joseph
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | - Amanda Soler
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | - Rebecca Hutcheson
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | - Ian Hunter
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | | | - Brenda Hutcheson
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | | | - Houli Jiang
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | - John R Falck
- Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas; and
| | - Spencer Proctor
- Metabolic and Cardiovascular Diseases Laboratory, Alberta Institute for Human Nutrition, University of Alberta, Edmonton, Alberta, Canada
| | | | - Petra Rocic
- Department of Pharmacology, New York Medical College, Valhalla, New York;
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16
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Fan F, Ge Y, Lv W, Elliott MR, Muroya Y, Hirata T, Booz GW, Roman RJ. Molecular mechanisms and cell signaling of 20-hydroxyeicosatetraenoic acid in vascular pathophysiology. Front Biosci (Landmark Ed) 2016; 21:1427-63. [PMID: 27100515 DOI: 10.2741/4465] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Cytochrome P450s enzymes catalyze the metabolism of arachidonic acid to epoxyeicosatrienoic acids (EETs), dihydroxyeicosatetraenoic acid and hydroxyeicosatetraeonic acid (HETEs). 20-HETE is a vasoconstrictor that depolarizes vascular smooth muscle cells by blocking K+ channels. EETs serve as endothelial derived hyperpolarizing factors. Inhibition of the formation of 20-HETE impairs the myogenic response and autoregulation of renal and cerebral blood flow. Changes in the formation of EETs and 20-HETE have been reported in hypertension and drugs that target these pathways alter blood pressure in animal models. Sequence variants in CYP4A11 and CYP4F2 that produce 20-HETE, UDP-glucuronosyl transferase involved in the biotransformation of 20-HETE and soluble epoxide hydrolase that inactivates EETs are associated with hypertension in human studies. 20-HETE contributes to the regulation of vascular hypertrophy, restenosis, angiogenesis and inflammation. It also promotes endothelial dysfunction and contributes to cerebral vasospasm and ischemia-reperfusion injury in the brain, kidney and heart. This review will focus on the role of 20-HETE in vascular dysfunction, inflammation, ischemic and hemorrhagic stroke and cardiac and renal ischemia reperfusion injury.
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Affiliation(s)
- Fan Fan
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS 39216
| | - Ying Ge
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS 39216
| | - Wenshan Lv
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS 39216 and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Matthew R Elliott
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS 39216
| | - Yoshikazu Muroya
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS 39216 and Department of General Medicine and Rehabilitation, Tohoku Medical and Pharmaceutical University School of Medicine, Sendai, Japan
| | - Takashi Hirata
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS 39216 and Taisho Pharmaceutical Co., Ltd., Saitama, Japan
| | - George W Booz
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS 39216
| | - Richard J Roman
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS 39216,
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17
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Imig JD. Epoxyeicosatrienoic Acids and 20-Hydroxyeicosatetraenoic Acid on Endothelial and Vascular Function. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2016; 77:105-41. [PMID: 27451096 DOI: 10.1016/bs.apha.2016.04.003] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Endothelial and vascular smooth cells generate cytochrome P450 (CYP) arachidonic acid metabolites that can impact endothelial cell function and vascular homeostasis. The objective of this review is to focus on the physiology and pharmacology of endothelial CYP metabolites. The CYP pathway produces two types of eicosanoid products: epoxyeicosatrienoic acids (EETs), formed by CYP epoxygenases, and hydroxyeicosatetraenoic acids (HETEs), formed by CYP hydroxylases. Advances in CYP enzymes, EETs, and 20-HETE by pharmacological and genetic means have led to a more complete understanding of how these eicosanoids impact on endothelial cell function. Endothelial-derived EETs were initially described as endothelial-derived hyperpolarizing factors. It is now well recognized that EETs importantly contribute to numerous endothelial cell functions. On the other hand, 20-HETE is the predominant CYP hydroxylase synthesized by vascular smooth muscle cells. Like EETs, 20-HETE acts on endothelial cells and impacts importantly on endothelial and vascular function. An important aspect for EETs and 20-HETE endothelial actions is their interactions with hormonal and paracrine factors. These include interactions with the renin-angiotensin system, adrenergic system, puringeric system, and endothelin. Alterations in CYP enzymes, 20-HETE, or EETs contribute to endothelial dysfunction and cardiovascular diseases such as ischemic injury, hypertension, and atherosclerosis. Recent advances have led to the development of potential therapeutics that target CYP enzymes, 20-HETE, or EETs. Thus, future investigation is required to obtain a more complete understanding of how CYP enzymes, 20-HETE, and EETs regulate endothelial cell function.
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Affiliation(s)
- J D Imig
- Medical College of Wisconsin, Milwaukee, WI, United States.
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18
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Lakhkar A, Dhagia V, Joshi SR, Gotlinger K, Patel D, Sun D, Wolin MS, Schwartzman ML, Gupte SA. 20-HETE-induced mitochondrial superoxide production and inflammatory phenotype in vascular smooth muscle is prevented by glucose-6-phosphate dehydrogenase inhibition. Am J Physiol Heart Circ Physiol 2016; 310:H1107-17. [PMID: 26921441 DOI: 10.1152/ajpheart.00961.2015] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 02/23/2016] [Indexed: 02/07/2023]
Abstract
20-Hydroxyeicosatetraeonic acid (20-HETE) produced by cytochrome P-450 monooxygenases in NADPH-dependent manner is proinflammatory, and it contributes to the pathogenesis of systemic and pulmonary hypertension. In this study, we tested the hypothesis that inhibition of glucose-6-phosphate dehydrogenase (G6PD), a major source of NADPH in the cell, prevents 20-HETE synthesis and 20-HETE-induced proinflammatory signaling that promotes secretory phenotype of vascular smooth muscle cells. Lipidomic analysis indicated that G6PD inhibition and knockdown decreased 20-HETE levels in pulmonary arteries as well as 20-HETE-induced 1) mitochondrial superoxide production, 2) activation of mitogen-activated protein kinase 1 and 3, 3) phosphorylation of ETS domain-containing protein Elk-1 that activate transcription of tumor necrosis factor-α gene (Tnfa), and 4) expression of tumor necrosis factor-α (TNF-α). Moreover, inhibition of G6PD increased protein kinase G1α activity, which, at least partially, mitigated superoxide production and Elk-1 and TNF-α expression. Additionally, we report here for the first time that 20-HETE repressed miR-143, which suppresses Elk-1 expression, and miR-133a, which is known to suppress synthetic/secretory phenotype of vascular smooth muscle cells. In summary, our findings indicate that 20-HETE elicited mitochondrial superoxide production and promoted secretory phenotype of vascular smooth muscle cells by activating MAPK1-Elk-1, all of which are blocked by inhibition of G6PD.
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Affiliation(s)
- Anand Lakhkar
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York
| | - Vidhi Dhagia
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York
| | - Sachindra Raj Joshi
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York
| | - Katherine Gotlinger
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York
| | - Dhara Patel
- Department of Physiology, New York Medical College School of Medicine, Valhalla, New York; and
| | - Dong Sun
- Department of Physiology, New York Medical College School of Medicine, Valhalla, New York; and
| | - Michael S Wolin
- Department of Physiology, New York Medical College School of Medicine, Valhalla, New York; and Translational Centre for Pulmonary Hypertension, New York Medical College School of Medicine, Valhalla, New York
| | - Michal L Schwartzman
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York
| | - Sachin A Gupte
- Department of Pharmacology, New York Medical College School of Medicine, Valhalla, New York; Translational Centre for Pulmonary Hypertension, New York Medical College School of Medicine, Valhalla, New York
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19
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Abstract
Arachidonic acid metabolites have a myriad of biological actions including effects on the kidney to alter renal hemodynamics and tubular transport processes. Cyclooxygenase metabolites are products of an arachidonic acid enzymatic pathway that has been extensively studied in regards to renal function. Two lesser-known enzymatic pathways of arachidonic acid metabolism are the lipoxygenase (LO) and cytochrome P450 (CYP) pathways. The importance of LO and CYP metabolites to renal hemodynamics and tubular transport processes is now being recognized. LO and CYP metabolites have actions to alter renal blood flow and glomerular filtration rate. Proximal and distal tubular sodium transport and fluid and electrolyte homeostasis are also significantly influenced by renal CYP and LO levels. Metabolites of the LO and CYP pathways also have renal actions that influence renal inflammation, proliferation, and apoptotic processes at vascular and epithelial cells. These renal LO and CYP pathway actions occur through generation of specific metabolites and cell-signaling mechanisms. Even though the renal physiological importance and actions for LO and CYP metabolites are readily apparent, major gaps remain in our understanding of these lipid mediators to renal function. Future studies will be needed to fill these major gaps regarding LO and CYP metabolites on renal function.
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Affiliation(s)
- John D Imig
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Md Abdul Hye Khan
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
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20
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High-salt diets during pregnancy increases renal vascular reactivity due to altered soluble guanylyl cyclase-related pathways in rat offspring. J Nutr Biochem 2015; 28:121-8. [PMID: 26878789 DOI: 10.1016/j.jnutbio.2015.10.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 10/09/2015] [Accepted: 10/13/2015] [Indexed: 12/29/2022]
Abstract
Adverse prenatal factors such as overtake of salt or fat food are potential risks for cardiovascular diseases in offspring. This study tested the hypothesis that prenatal high-salt (HS) diets may influence renal vascular tone and attenuates signaling pathways related to soluble guanylyl cyclase (sGC) or/and large-conductance Ca(2+)-activated K(+) (BKCa) channels in the offspring. Pregnant rats were fed either normal salt (NS) (1% NaCl) or HS (8% NaCl) diet for the whole gestation. Offspring were maintained on NS diets. Renal interlobar arteries in offspring were tested for vascular responses to phenylephrine (Phe), K(+) channels and signal pathways related to sGC. Phe induced higher vessel tension in interlobar arteries of the HS offspring. Following pretreatment with BKCa channel inhibitor iberiotoxin, Phe-mediated vasoconstrictions were decreased in HS offspring compared to NS. Phe-mediated constrictions following pretreatment with NO synthase inhibitor N(G)-nitro-l-arginine methyl ester or sGC inhibitor 1H-1,2,4-oxadiazolo-4,3-quinoxalin-1-one in the HS offspring were less sensitive than NS. The whole-cell K(+) currents and the component of BKCa channels were not changed in smooth muscle cells from interlobar arteries, whereas the K(+) currents stimulated by sGC activator BAY41-2272 were reduced in the HS offspring. The protein expressions of sGC β1 and β2 in the interlobar arteries of HS offspring were reduced. The results showed that chronic overintake of salt during pregnancy could increase renal vascular tone in the offspring. The affected signal pathways included down-regulation of sGC function and expression.
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21
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Garcia V, Joseph G, Shkolnik B, Ding Y, Zhang FF, Gotlinger K, Falck JR, Dakarapu R, Capdevila JH, Bernstein KE, Schwartzman ML. Angiotensin II receptor blockade or deletion of vascular endothelial ACE does not prevent vascular dysfunction and remodeling in 20-HETE-dependent hypertension. Am J Physiol Regul Integr Comp Physiol 2015; 309:R71-8. [PMID: 25924878 PMCID: PMC4491537 DOI: 10.1152/ajpregu.00039.2015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 04/18/2015] [Indexed: 01/13/2023]
Abstract
Increased vascular 20-HETE is associated with hypertension and activation of the renin-angiotensin system (RAS) through induction of vascular angiotensin-converting enzyme (ACE) expression. Cyp4a12tg mice, whose Cyp4a12-20-HETE synthase expression is under the control of a tetracycline (doxycycline, DOX) promoter, were used to assess the contribution of ACE/RAS to microvascular remodeling in 20-HETE-dependent hypertension. Treatment of Cyp4a12tg mice with DOX increased systolic blood pressure (SBP; 136 ± 2 vs. 102 ± 1 mmHg; P < 0.05), and this increase was prevented by administration of 20-HEDGE, lisinopril, or losartan. DOX-induced hypertension was associated with microvascular dysfunction and remodeling of preglomerular microvessels, which was prevented by 20-HEDGE, a 20-HETE antagonist, yet only lessened, but not prevented, by lisinopril or losartan. In ACE 3/3 mice, which lack vascular endothelial ACE, administration of 5α-dihydrotestosterone (DHT), a known inducer of 20-HETE production, increased SBP; however, the increase was about 50% of that in wild-type (WT) mice (151 ± 1 vs. 126 ± 1 mmHg). Losartan and 20-HEDGE prevented the DHT-induced increase in SBP in WT and ACE 3/3 mice. DHT treatment increased 20-HETE production and microvascular remodeling in WT and ACE 3/3 mice; however, remodeling was attenuated in the ACE 3/3 mice as opposed to WT mice (15.83 ± 1.11 vs. 22.17 ± 0.92 μm; P < 0.05). 20-HEDGE prevented microvascular remodeling in WT and ACE 3/3 mice, while losartan had no effect on microvascular remodeling in ACE 3/3. Taken together, these results suggest that RAS contributes to 20-HETE-mediated microvascular remodeling in hypertension and that 20-HETE-driven microvascular remodeling independent of blood pressure elevation does not fully rely on ACE activity in the vascular endothelium.
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Affiliation(s)
- Victor Garcia
- Department of Pharmacology, New York Medical College, Valhalla, New York;
| | - Gregory Joseph
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | - Brian Shkolnik
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | - Yan Ding
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | - Frank Fan Zhang
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | | | - John R Falck
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Rambabu Dakarapu
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Jorge H Capdevila
- Departments of Medicine and Biochemistry, Vanderbilt University, Nashville, Tennessee; and
| | - Kenneth E Bernstein
- Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, California
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22
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Hoopes SL, Garcia V, Edin ML, Schwartzman ML, Zeldin DC. Vascular actions of 20-HETE. Prostaglandins Other Lipid Mediat 2015; 120:9-16. [PMID: 25813407 DOI: 10.1016/j.prostaglandins.2015.03.002] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 02/27/2015] [Accepted: 03/04/2015] [Indexed: 12/12/2022]
Abstract
20-hydroxyeicosatetraenoic acid (20-HETE) is a metabolite of arachidonic acid that exhibits a myriad of biological effects in the vascular system. This review discusses the current knowledge related to the effects of 20-HETE on vascular reactivity, activation, and remodeling, as well as its role in vascular inflammation and angiogenesis. The information explaining how 20-HETE and the renin-angiotensin system interact to promote hypertension, vasoconstriction, and vascular dysfunction is summarized in this article. 20-HETE enhances vascular inflammation and injury in models of diabetes, ischemia/reperfusion, and cerebrovascular oxidative stress. Recent studies also established a role for 20-HETE in normal and pathological angiogenesis conditions. This review will also discuss the molecular mechanisms through which 20-HETE induces these vascular actions. Potential additional studies are suggested to address shortcomings in the current knowledge of 20-HETE in the vascular system.
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Affiliation(s)
- Samantha L Hoopes
- Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
| | - Victor Garcia
- Department of Pharmacology, New York Medical College, Valhalla, NY, USA
| | - Matthew L Edin
- Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
| | | | - Darryl C Zeldin
- Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA.
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23
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Garcia V, Cheng J, Weidenhammer A, Ding Y, Wu CC, Zhang F, Gotlinger K, Falck JR, Schwartzman ML. Androgen-induced hypertension in angiotensinogen deficient mice: role of 20-HETE and EETS. Prostaglandins Other Lipid Mediat 2014; 116-117:124-30. [PMID: 25526688 DOI: 10.1016/j.prostaglandins.2014.12.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 11/25/2014] [Accepted: 12/02/2014] [Indexed: 01/17/2023]
Abstract
20-HETE is a potent inducer of endothelial ACE in vitro and administration of lisinopril or losartan attenuates blood pressure in models of 20-HETE-dependent hypertension. The present study was undertaken to further define the relationship between 20-HETE and the renin-angiotensin system in hypertension using an angiotensinogen-deficient mouse (Agt+/-). Treatment of male AGT+/- with 5α-dihydrotestosterone (DHT) increased systolic BP from 102±2 to 125±3mmHg; in comparison, the same treatment raised BP in wild type (WT) from 110±2 to 138±2mmHg. DHT increased vascular 20-HETE levels in AGT+/- and WT from 1.5±0.7 and 2.1±0.6 to 13.0±2.0 and 15.8±4.0ng/mg, respectively. Concurrent treatment with the 20-HETE antagonist, 20-hydroxyeicosa-6(Z),15(Z)-dienoic acid (20-HEDE) prevented the increases in BP in both AGT+/- and WT mice. Administration of 20-HEDE at the peak of the DHT-induced BP increase (12 days) reduced BP to basal levels after 48h. Interestingly, basal levels of renal microvascular EETs were higher in AGT+/- compared to WT (55.2±9.7 vs 20.0±4.1ng/mg) and treatment of AGT+/- with DHT decreased the levels of EETs (28.4±5.1ng/mg). DHT-mediated changes in vascular EET level were not observed in WT mice. Vascular Cyp4a12 and ACE protein levels were increased in both AGT+/- and WT by 30-40% and decreased with concomitant administration of 20-HEDE. Lisinopril was as effective as 20-HEDE in preventing DHT-mediated increases in BP in both AGT+/- and WT mice. This study substantiates our previous findings that the RAS plays an important role in 20-HETE-mediated hypertension. It also proposes a novel interaction between 20-HETE and EETs.
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Affiliation(s)
- Victor Garcia
- Department of Pharmacology, New York Medical College, Valhalla, NY, United States.
| | - Jennifer Cheng
- Department of Pharmacology, New York Medical College, Valhalla, NY, United States
| | - Adam Weidenhammer
- Department of Pharmacology, New York Medical College, Valhalla, NY, United States
| | - Yan Ding
- Department of Pharmacology, New York Medical College, Valhalla, NY, United States
| | - Cheng-Chia Wu
- Department of Pharmacology, New York Medical College, Valhalla, NY, United States
| | - Fan Zhang
- Department of Pharmacology, New York Medical College, Valhalla, NY, United States
| | - Katherine Gotlinger
- Department of Pharmacology, New York Medical College, Valhalla, NY, United States
| | - John R Falck
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Michal L Schwartzman
- Department of Pharmacology, New York Medical College, Valhalla, NY, United States
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24
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Pollow DP, Uhrlaub J, Romero-Aleshire M, Sandberg K, Nikolich-Zugich J, Brooks HL, Hay M. Sex differences in T-lymphocyte tissue infiltration and development of angiotensin II hypertension. Hypertension 2014; 64:384-390. [PMID: 24890822 DOI: 10.1161/hypertensionaha.114.03581] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
There is extensive evidence that activation of the immune system is both necessary and required for the development of angiotensin II (Ang II)-induced hypertension in males. The purpose of this study was to determine whether sex differences exist in the ability of the adaptive immune system to induce Ang II-dependent hypertension and whether central and renal T-cell infiltration during Ang II-induced hypertension is sex dependent. Recombinant activating gene-1 (Rag-1)(-/-) mice, lacking both T and B cells, were used. Male and female Rag-1(-/-) mice received adoptive transfer of male CD3(+) T cells 3 weeks before 14-day Ang II infusion (490 ng/kg per minute). Blood pressure was monitored via tail cuff. In the absence of T cells, systolic blood pressure responses to Ang II were similar between sexes (Δ22.1 mm Hg males versus Δ18 mm : Hg females). After adoptive transfer of male T cells, Ang II significantly increased systolic blood pressure in males (Δ37.7 mm : Hg; P<0.05) when compared with females (Δ13.7 mm : Hg). Flow cytometric analysis of total T cells and CD4(+), CD8(+), and regulatory Foxp3(+)-CD4(+) T-cell subsets identified that renal lymphocyte infiltration was significantly increased in males versus females in both control and Ang II-infused animals (P<0.05). Immunohistochemical staining for CD3(+)-positive T cells in the subfornical organ region of the brain was increased in males when compared with that in females. These results suggest that female Rag-1(-/-) mice are protected from male T-cell-mediated increases in Ang II-induced hypertension when compared with their male counterparts, and this protection may involve sex differences in the magnitude of T-cell infiltration of the kidney and brain.
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Affiliation(s)
- Dennis P Pollow
- Department of Physiology University of Arizona, Tucson, AZ.,Sarver Heart Center University of Arizona, Tucson, AZ
| | | | | | - Kathryn Sandberg
- Department of Medicine and Center for the Study of Sex Differences in Health, Aging and Disease, Georgetown University, Washington, DC
| | | | - Heddwen L Brooks
- Department of Physiology University of Arizona, Tucson, AZ.,Sarver Heart Center University of Arizona, Tucson, AZ
| | - Meredith Hay
- Department of Physiology University of Arizona, Tucson, AZ.,Sarver Heart Center University of Arizona, Tucson, AZ.,Evelyn McKnight Brain Institute, University of Arizona, Tucson, AZ
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