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Rautureau Y, Berlatie M, Rivas D, Uy K, Blanchette A, Miquel G, Higgins MÈ, Mecteau M, Nault A, Villeneuve L, Lavoie V, Théberge-Julien G, Brand G, Lapointe L, Denis M, Rosa C, Fortier A, Blondeau L, Guertin MC, Dubé MP, Thorin É, Ledoux J, Rhainds D, Rhéaume É, Tardif JC. Adenylate cyclase type 9 antagonizes cAMP accumulation and regulates endothelial signaling involved in atheroprotection. Cardiovasc Res 2022; 119:450-464. [PMID: 35576489 DOI: 10.1093/cvr/cvac085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 04/12/2022] [Accepted: 05/06/2022] [Indexed: 11/13/2022] Open
Abstract
AIMS The adenylate cyclase type 9 (ADCY9) gene appears to determine atherosclerotic outcomes in patients treated with dalcetrapib. In mice, we recently demonstrated that Adcy9 inactivation potentiates endothelial function and inhibits atherogenesis. The objective of this study was to characterize the contribution of ADCY9 to the regulation of endothelial signaling pathways involved in atherosclerosis. METHODS AND RESULTS We show that ADCY9 is expressed in the endothelium of mouse aorta and femoral arteries. We demonstrate that ADCY9 inactivation in cultured endothelial cells paradoxically increases cAMP accumulation in response to the adenylate cyclase activators forskolin and vasoactive intestinal peptide (VIP). Reciprocally, ADCY9 overexpression decreases cAMP production. Using mouse femoral artery arteriography, we show that Adcy9 inactivation potentiates VIP-induced endothelial-dependent vasodilation. Moreover, Adcy9 inactivation reduces mouse atheroma endothelial permeability in different vascular beds. ADCY9 overexpression reduces forskolin-induced phosphorylation of Ser157-vasodilator-stimulated phosphoprotein (VASP) and worsens thrombin-induced fall of RAP1 activity, both leading to increased endothelial permeability. ADCY9 inactivation in thrombin-stimulated human coronary artery endothelial cells results in cAMP accumulation, increases p-Ser157-VASP and inhibits endothelial permeability. MLC2 phosphorylation and actin stress fiber increases in response to thrombin were reduced by ADCY9 inactivation, suggesting actin cystoskeleton regulation. Finally, using the Miles assay, we demonstrate that Adcy9 regulates thrombin-induced endothelial permeability in vivo in normal and atherosclerotic animals. CONCLUSION Adcy9 is expressed in endothelial cells and regulates local cAMP and endothelial functions including permeability relevant to atherogenesis.
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Affiliation(s)
- Yohann Rautureau
- Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | | | - Daniel Rivas
- Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Kurunradeth Uy
- Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Alexandre Blanchette
- Department of Physiology and Pharmacology, Université de Montréal, Montreal, Canada
| | - Géraldine Miquel
- Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | | | - Mélanie Mecteau
- Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Audrey Nault
- Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Louis Villeneuve
- Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Véronique Lavoie
- Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | | | - Geneviève Brand
- Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Line Lapointe
- Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Maxime Denis
- Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Camille Rosa
- Montreal Health Innovations Coordinating Centre (MHICC), Montreal, Canada
| | - Annik Fortier
- Montreal Health Innovations Coordinating Centre (MHICC), Montreal, Canada
| | - Lucie Blondeau
- Montreal Health Innovations Coordinating Centre (MHICC), Montreal, Canada
| | | | - Marie-Pierre Dubé
- Université de Montréal Beaulieu-Saucier Pharmacogenomics Centre, Montreal, Canada.,Department of Medicine
| | - Éric Thorin
- Montreal Heart Institute, Université de Montréal, Montreal, Canada.,Department of Surgery of the Faculty of Medicine, Université de Montréal, Montreal, Canada
| | - Jonathan Ledoux
- Department of Physiology and Pharmacology, Université de Montréal, Montreal, Canada
| | - David Rhainds
- Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Éric Rhéaume
- Montreal Heart Institute, Université de Montréal, Montreal, Canada.,Department of Medicine
| | - Jean-Claude Tardif
- Montreal Heart Institute, Université de Montréal, Montreal, Canada.,Department of Medicine
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Rytel L, Könyves L, Gonkowski S. Endocrine Disruptor Bisphenol a Affects the Neurochemical Profile of Nerve Fibers in the Aortic Arch Wall in the Domestic Pig. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19105964. [PMID: 35627499 PMCID: PMC9140835 DOI: 10.3390/ijerph19105964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 05/09/2022] [Accepted: 05/11/2022] [Indexed: 02/01/2023]
Abstract
Bisphenol A (BPA) is a synthetic compound utilized in industry for the production of various plastics. BPA penetrates into the environment and adversely affects living organisms. Therefore, the influence of various BPA dosages on the neurochemical characteristics of nerve fibers located in the aortic branch wall was investigated in this study utilizing a double immunofluorescence method. It was found that BPA in concentration of 0.5 mg/kg body weight/day causes a clear increase in the density of nerves within aortic branch walls immunoreactive to cocaine- and amphetamine-regulated transcript (CART), calcitonin gene-related peptide (CGRP), neuronal isoform of nitric oxide synthase (nNOS), pituitary adenylate cyclase-activating peptide (PACAP), and vasoactive intestinal polypeptide (VIP). Nerves containing galanin (GAL) and/or somatostatin (SOM) did not change when BPA was introduced into the system. Changes noted after administration of BPA at a dose of 0.05 mg/kg body weight/day were less visible and concerned fibers immunoreactive to CART, CGRP, and/or PACAP. The obtained results show that BPA affects the neurochemical coding of nerves in the aortic branch wall. These fluctuations may be the first signs of the influence of this substance on blood vessels and may also be at the root of the disturbances in the cardiovascular system.
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Affiliation(s)
- Liliana Rytel
- Department of Internal Disease with Clinic, Faculty of Veterinary Medicine, University of Warmia and Mazury, ul. Oczapowskiego 14, 10-719 Olsztyn, Poland
- Correspondence:
| | - László Könyves
- Department of Animal Hygiene, Herd Health and Mobile Clinic, University of Veterinary Medicine, 1078 Budapest, Hungary;
| | - Slawomir Gonkowski
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury, 10-719 Olsztyn, Poland;
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Stojić D, Pesić S, Radenković M, Popović-Roganović J, Pesić Z, Grbović L. Responses of the Human Submandibular Artery to ACh and VIP. J Dent Res 2016; 86:565-70. [PMID: 17525359 DOI: 10.1177/154405910708600615] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Endothelial vasodilatory substances may play a central role in the local regulation of vascular tone. We hypothesized that these substances can mediate endothelium-dependent vasodilatory responses to acetylcholine (ACh) and vasoactive intestinal peptide (VIP) in the human submandibular artery. We evaluated the contributions of endothelial vasodilatory substances to vessel relaxation in response to ACh and VIP, using different inhibitors of endothelial vasodilation, the nitric oxide synthase inhibitor, the cyclo-oxygenase inhibitor, indomethacin, the potassium channel blocker, and 4-aminopyridine. ACh and VIP caused an endothelium- and concentration-dependent relaxation in this artery. ACh relaxation was completely blocked after the concomitant addition of NG-nitro-L-arginine and indomethacin. The vasorelaxant effect of ACh was not influenced by 4-aminopyridine. VIP relaxation was almost completely abolished by 4-aminopyridine, and was partly inhibited by NG-nitro-L-arginine, but was not affected by indomethacin. Thus, in the human submandibular artery, ACh and VIP produced endothelium-dependent vasodilation with different underlying mechanisms: release of nitric oxide (NO) and cyclo-oxygenase products for ACh, and release of NO and endothelium-derived hyperpolarizing factor for VIP.
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Affiliation(s)
- D Stojić
- Department of Pharmacology, Faculty of Stomatology, University of Belgrade, Dr. Subotića br. 8, 11 000 Belgrade.
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Granger DN, Holm L, Kvietys P. The Gastrointestinal Circulation: Physiology and Pathophysiology. Compr Physiol 2016; 5:1541-83. [PMID: 26140727 DOI: 10.1002/cphy.c150007] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The gastrointestinal (GI) circulation receives a large fraction of cardiac output and this increases following ingestion of a meal. While blood flow regulation is not the intense phenomenon noted in other vascular beds, the combined responses of blood flow, and capillary oxygen exchange help ensure a level of tissue oxygenation that is commensurate with organ metabolism and function. This is evidenced in the vascular responses of the stomach to increased acid production and in intestine during periods of enhanced nutrient absorption. Complimenting the metabolic vasoregulation is a strong myogenic response that contributes to basal vascular tone and to the responses elicited by changes in intravascular pressure. The GI circulation also contributes to a mucosal defense mechanism that protects against excessive damage to the epithelial lining following ingestion of toxins and/or noxious agents. Profound reductions in GI blood flow are evidenced in certain physiological (strenuous exercise) and pathological (hemorrhage) conditions, while some disease states (e.g., chronic portal hypertension) are associated with a hyperdynamic circulation. The sacrificial nature of GI blood flow is essential for ensuring adequate perfusion of vital organs during periods of whole body stress. The restoration of blood flow (reperfusion) to GI organs following ischemia elicits an exaggerated tissue injury response that reflects the potential of this organ system to generate reactive oxygen species and to mount an inflammatory response. Human and animal studies of inflammatory bowel disease have also revealed a contribution of the vasculature to the initiation and perpetuation of the tissue inflammation and associated injury response.
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Affiliation(s)
- D Neil Granger
- Department of Molecular and Cellular Physiology, LSU Health Science Center-Shreveport, Shreveport, Louisiana, USA
| | - Lena Holm
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Peter Kvietys
- Department of Physiological Sciences, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
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Liu KL, Canaple L, Del Carmine P, Gauthier K, Beylot M, Lo M. Thyroid hormone receptor-α deletion decreases heart function and exercise performance in apolipoprotein E-deficient mice. Physiol Genomics 2015; 48:73-81. [PMID: 26672044 DOI: 10.1152/physiolgenomics.00115.2015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 12/14/2015] [Indexed: 11/22/2022] Open
Abstract
The deletion of thyroid hormone receptor-α (TRα) in atherosclerosis-prone apolipoprotein E-deficient (ApoE(-/-)) mice (ApoE(-/-)TRα(0/0)) accelerates the formation of atherosclerotic plaques without aggravation of hypercholesterolemia. To evaluate other predisposition risk factors to atherosclerosis in this model, we studied blood pressure (BP) and cardiac and vascular functions, as well as exercise tolerance in young adult ApoE(-/-)TRα(0/0) mice before the development of atherosclerotic plaques. Telemetric BP recorded for 4 consecutive days showed that the spontaneous systolic BP was slightly decreased in ApoE(-/-)TRα(0/0) compared with ApoE(-/-) mice associated with a reduced locomotor activity. The percentage of animals that completed endurance (57% vs. 89%) and maximal running (0% vs. 89% at 46 cm/s speed in ApoE(-/-)TRα(0/0) and ApoE(-/-) mice, respectively) tests was lower in ApoE(-/-)TRα(0/0) mice. Moreover, during the maximal running test, both maximal running speed and running distance were significantly reduced in ApoE(-/-)TRα(0/0) mice, associated with a blunted BP response to exercise. Transthoracic echocardiography revealed a decreased interventricular septum thickness and an increased end-systolic left ventricular volume in ApoE(-/-)TRα(0/0) mice. Accordingly, left ventricular fractional shortening, ejection fraction, and stroke volume were all significantly decreased in ApoE(-/-)TRα(0/0) mice with a concomitant blunted cardiac output. No interstrain difference was observed in vascular reactivity, except that ApoE(-/-)TRα(0/0) mice exhibited an enhanced acetylcholine-induced relaxation in mesenteric and distal femoral arteries. In conclusion, the deletion of TRα in ApoE(-/-) mice alters cardiac structure and contractility; both could contribute to blunted BP response to physical exercise and impaired exercise performance.
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Affiliation(s)
- Kiao Ling Liu
- Neurocardiology Unit - EA 4612, Institute of Pharmaceutical and Biological Sciences, University Claude Bernard Lyon 1, Lyon, France;
| | - Laurence Canaple
- Institute of Functional Genomics of Lyon, University Claude Bernard Lyon 1, Centre National de la Recherche Scientifique, Ecole Normale Supérieure de Lyon, Lyon, France; and
| | - Peggy Del Carmine
- Technical Platform ANIPHY, University Claude Bernard Lyon 1, Lyon, France
| | - Karine Gauthier
- Institute of Functional Genomics of Lyon, University Claude Bernard Lyon 1, Centre National de la Recherche Scientifique, Ecole Normale Supérieure de Lyon, Lyon, France; and
| | - Michel Beylot
- Neurocardiology Unit - EA 4612, Institute of Pharmaceutical and Biological Sciences, University Claude Bernard Lyon 1, Lyon, France; Technical Platform ANIPHY, University Claude Bernard Lyon 1, Lyon, France
| | - Ming Lo
- Neurocardiology Unit - EA 4612, Institute of Pharmaceutical and Biological Sciences, University Claude Bernard Lyon 1, Lyon, France
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Petkov V, Baykuscheva-Gentscheva T, Hoeger H, Painsipp E, Holzer P, Mosgoeller W. Involvement of endothelial NO in the dilator effect of VIP on rat isolated pulmonary artery. ACTA ACUST UNITED AC 2006; 139:102-8. [PMID: 17174416 DOI: 10.1016/j.regpep.2006.10.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2006] [Accepted: 10/18/2006] [Indexed: 11/25/2022]
Abstract
The endothelium and its interaction with smooth muscle play a central role in the local control of the pulmonary vasculature, and endothelial dysfunction is thought to contribute to pulmonary hypertension and chronic obstructive pulmonary disease. Vasoactive intestinal peptide (VIP), a 28-amino acid neuropeptide, relaxes the rat pulmonary artery, but there is controversy as to whether or not this action of VIP depends on the endothelium. The aim of this study, therefore, was to investigate the role of the endothelium and nitric oxide (NO), the major endothelium-derived relaxing factor, in the dilator action of VIP on the rat isolated pulmonary artery. Pulmonary artery preparations pre-contracted by the alpha(1)-adrenoceptor agonist L-phenylephrine were relaxed by VIP (0.003-1 microM) and acetylcholine (0.003-10 microM) in a concentration-dependent manner. Mechanical removal of the endothelium reduced the maximal response to VIP by about 50% and practically abolished the response to acetylcholine. Inhibition of NO synthesis by N(omega)-nitro-L-arginine methyl ester (0.5 mM) had a similar effect, abolishing the vasorelaxation caused by acetylcholine and attenuating the vasorelaxation caused by VIP by about 50%. From these data it is concluded that the relaxant action of VIP on the rat isolated pulmonary artery depends in part on the presence of the endothelium and that this part is mediated by endothelial NO.
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Onyüksel H, Séjourné F, Suzuki H, Rubinstein I. Human VIP-alpha: a long-acting, biocompatible and biodegradable peptide nanomedicine for essential hypertension. Peptides 2006; 27:2271-5. [PMID: 16621151 DOI: 10.1016/j.peptides.2006.03.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2006] [Revised: 03/06/2006] [Accepted: 03/08/2006] [Indexed: 10/24/2022]
Abstract
We have previously shown that self-association of human vasoactive intestinal peptide with sterically stabilized liposomes (VIP-alpha) alters peptide conformation from random coil in aqueous solution to alpha-helix. This, in turn, protects the peptide from hydrolysis and amplifies and prolongs its bioactivity. The purpose of this study was to determine whether a single, intravenous injection of low-dose human VIP-alpha normalizes systemic arterial pressure in anesthetized spontaneously hypertensive hamsters for a prolonged period of time in a selective fashion. We found that intravenous injection of human VIP-alpha, VIP alone (each, 1.0 nmol) and empty liposomes had no significant effects on mean arterial pressure (MAP) in normotensive hamsters. By contrast, human VIP-alpha (0.01-1.0 nmol) evoked a significant concentration-dependent decrease in MAP to the normative range in spontaneously hypertensive hamsters that lasted throughout the observation period (6 h; p<0.05). VIP alone and empty liposomes had no significant effects on MAP in these animals. We conclude that a single, low-dose intravenous injection of human VIP-alpha normalizes systemic arterial pressure in spontaneously hypertensive hamsters for a prolonged period of time in a selective fashion. We suggest that human VIP-alpha should be further developed as a long-acting, biocompatible and biodegradable peptide nanomedicine for essential hypertension.
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Affiliation(s)
- Hayat Onyüksel
- Department of Biopharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, IL 60612, United States
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Horváth B, Orsy P, Benyó Z. Endothelial NOS-mediated relaxations of isolated thoracic aorta of the C57BL/6J mouse: a methodological study. J Cardiovasc Pharmacol 2005; 45:225-31. [PMID: 15725947 DOI: 10.1097/01.fjc.0000154377.90069.b9] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Endothelium-dependent relaxations were studied in the thoracic aorta (TA) of the C57BL/6J mouse, a strain used commonly in the generation of genetically altered mice, to clarify some methodological questions. First, we have tested if transcardial perfusion with heparinized Krebs solution before the preparation of the TA may improve in vitro relaxant responses. Carbachol, thrombin, and ATP induced significantly stronger relaxations in TAs prepared from perfused animals than in controls. The effect of sodium nitroprusside (SNP), however, did not change, indicating that the improvement of the endothelium-dependent relaxations after perfusion was not caused by increased reactivity of the vascular smooth muscle to NO. Second, the potential regional differences within the TA were studied. Carbachol relaxed significantly stronger distal than proximal TA segments, whereas the effects of thrombin, ATP, and SNP showed no regional heterogeneity. Third, the relaxant effect of carbachol was partially preserved in TAs of endothelial NOS deficient (eNOS-/-) animals and remained unchanged in the presence of indomethacin, indicating the involvement of an eNOS- and cyclooxygenase-independent mechanism in the mediation of the response. Thrombin and ATP were ineffective in eNOS-/- TAs. Finally, TAs prepared from mice housed in cages equipped with running wheels did not show improved reactivity, indicating that the conventional housing conditions and the consequent sedentary lifestyle of the laboratory mouse do not diminish endothelial function in the TA.
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Affiliation(s)
- Béla Horváth
- Institute of Pharmacology, Ruprecht-Karls-University, Heidelberg, Germany
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