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Intrinsic exercise capacity induces divergent vascular plasticity via arachidonic acid-mediated inflammatory pathways in female rats. Vascul Pharmacol 2021; 140:106862. [PMID: 33872803 DOI: 10.1016/j.vph.2021.106862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 03/03/2021] [Accepted: 04/07/2021] [Indexed: 12/31/2022]
Abstract
Metabolic syndrome prevalence has increased among US adults, particularly among non-hispanic white and black women. Sedentary behavior often leads to chronic inflammation, a triggering factor of metabolic syndrome. Given that intrinsic exercise capacity is genetically inherited, we questioned if low-grade chronic inflammation would be present in a female rat model of low intrinsic exercise capacity-induced metabolic syndrome, while beneficial increase of resolution of inflammation would be present in a female rat model of high intrinsic exercise capacity. In the vascular system, two primary markers for inflammation and resolution of inflammation are cyclooxygenase (COX) and lipoxygenase (LOX), respectively. Our study focused on the novel hypothesis that untrained, inherited exercise capacity induces divergent vascular plasticity via changes in the delicate balance between COX and LOX inflammatory mediators. We used divergent rat strains with low (LCR) and high (HCR) aerobic running capacity. By using animals with contrasting intrinsic exercise capacities, it is possible to determine the exact triggers that lead to inherited vascular plasticity in female rats. We observed that female LCR displayed increased periovarian fat pad and body weight, which is congruent with their obesity-presenting phenotype. Furthermore, LCR presented with vascular hypocontractility and increased COX and LOX-derived pro-inflammatory factors. On the other hand, HCR presented with a "shutdown" of COX-induced vasoconstriction and enhanced resolution of inflammation to maintain vascular tone and homeostasis. In conclusion, LCR display low-grade chronic inflammation via increased COX activity. These results provide mechanistic clues as to why lower intrinsic aerobic capacity correlates with a predisposition to risk of vascular disease. Conversely, being born with higher intrinsic aerobic capacity is a significant factor for improved vascular physiology in female rats.
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Fouquet O, Blossier JD, Dang Van S, Robert P, Barbelivien A, Pinaud F, Binuani P, Eid M, Henrion D, Baufreton C, Loufrani L. Do storage solutions protect endothelial function of arterialized vein graft in an experimental rat model? J Cardiothorac Surg 2020; 15:34. [PMID: 32041642 PMCID: PMC7011455 DOI: 10.1186/s13019-020-1077-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 01/30/2020] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND This study aims to compare the effects of storage solutions commonly used in coronary artery bypass grafting on the vascular reactivity in vein graft interposed in arterial position in syngeneic rats. METHODS Twenty-seven male Lewis rats were sacrified to sample a vein graft implanted 6 weeks ago into abdominal aorta position. The vein grafts were inferior venae cavae initially pretreated with heparinized saline solution (HS) or autologous heparinized blood (AHB) or our referent solution, GALA. The endothelial functionality, the in situ Reactive Oxygen Species (ROS) levels and the histological characteristics were conducted from segments of arterialized vein graft. RESULTS At 6 weeks, graft thrombosis occurred respectively in 22% of AHB group, 62.5% in the HS group and 82.5% in the GALA group. In each group, significative intimal hyperplasia was observed. After 6 weeks, an endothelium-remodeling layer associated with an increase of wall thickness was observed in each group. Endothelium-dependent tone was reduced in the vein graft regardless of the group. No difference was observed concerning the ROS in vein graft between the different groups. In distal aortic sections, ROS levels were increased in HS and GALA groups. CONCLUSIONS Storage solutions used in this experimental model of vein graft implanted in arterial position cause graft injury and a complete disappearance of vascular reactivity. GALA solution did not reduce intimal risk hyperplasia when the vein graft was exposed to arterial flow in a rat model.
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Affiliation(s)
- Olivier Fouquet
- Department of Cardiac Surgery, University Hospital of Angers, France, 4 rue Larrey, 49933 CHU, Angers Cedex 9, France.
- Institute MITOVASC CNRS UMR 6015, INSERM 1083, Angers, France.
| | - Jean-David Blossier
- Institute MITOVASC CNRS UMR 6015, INSERM 1083, Angers, France
- Department of Cardiac Surgery, CHU Dupuytren, Limoges, France
| | - Simon Dang Van
- Department of Cardiac Surgery, University Hospital of Angers, France, 4 rue Larrey, 49933 CHU, Angers Cedex 9, France
- Institute MITOVASC CNRS UMR 6015, INSERM 1083, Angers, France
| | - Pauline Robert
- Institute MITOVASC CNRS UMR 6015, INSERM 1083, Angers, France
| | | | - Frédéric Pinaud
- Department of Cardiac Surgery, University Hospital of Angers, France, 4 rue Larrey, 49933 CHU, Angers Cedex 9, France
- Institute MITOVASC CNRS UMR 6015, INSERM 1083, Angers, France
| | - Patrice Binuani
- Department of Cardiac Surgery, University Hospital of Angers, France, 4 rue Larrey, 49933 CHU, Angers Cedex 9, France
| | - Maroua Eid
- Department of Cardiac Surgery, University Hospital of Angers, France, 4 rue Larrey, 49933 CHU, Angers Cedex 9, France
| | - Daniel Henrion
- Institute MITOVASC CNRS UMR 6015, INSERM 1083, Angers, France
- University Hospital of Angers, Angers, France
| | - Christophe Baufreton
- Department of Cardiac Surgery, University Hospital of Angers, France, 4 rue Larrey, 49933 CHU, Angers Cedex 9, France
- Institute MITOVASC CNRS UMR 6015, INSERM 1083, Angers, France
| | - Laurent Loufrani
- Institute MITOVASC CNRS UMR 6015, INSERM 1083, Angers, France
- University Hospital of Angers, Angers, France
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López-Canales JS, Lozano-Cuenca J, López-Canales OA, Aguilar-Carrasco JC, Aranda-Zepeda L, López-Sánchez P, Castillo-Henkel EF, López-Mayorga RM, Valencia-Hernández I. Pharmacological characterization of mechanisms involved in the vasorelaxation produced by rosuvastatin in aortic rings from rats with a cafeteria-style diet. Clin Exp Pharmacol Physiol 2016; 42:653-61. [PMID: 25881486 PMCID: PMC4654262 DOI: 10.1111/1440-1681.12406] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 03/07/2015] [Accepted: 04/07/2015] [Indexed: 12/13/2022]
Abstract
The present study aimed to investigate the possible influence of several inhibitors and blockers on the vascular effect produced by the acute in vitro application of rosuvastatin to phenylephrine-precontracted aortic rings from rats with a semi-solid, cafeteria-style (CAF) diet. It also aimed to examine the effects of rosuvastatin on the expression of endothelial nitric oxide synthase (eNOS), inducible nitric oxide synthase, constitutive cyclooxygenase, and inducible cyclooxygenase in aortic rings from rats with a CAF diet. From comparisons of the effect on phenylephrine-precontracted aortic rings extracted from rats with two different diets (a standard and a CAF diet), it was found that 10−9–10−5-mol/L rosuvastatin produced lower concentration-dependent vasorelaxation on rings from the CAF diet group. The vasorelaxant effect was unaffected by the vehicle, but it was significantly attenuated by 10−5-mol/L NG-nitro-l-arginine methyl ester, 10−2-mol/L tetraethylammonium, 10−3-mol/L 4-aminopyridine, 10−7-mol/L apamin plus 10−7-mol/L charybdotoxin, 10−5-mol/L indomethacin, or 10−5-mol/L cycloheximide. Moreover, in aortic rings from rats with a CAF diet, rosuvastatin enhanced the expression of eNOS, inducible nitric oxide synthase, constitutive cyclooxygenase, and inducible cyclooxygenase. The acute in vitro application of rosuvastatin to phenylephrine-precontracted aortic rings from rats with a CAF diet had a vasorelaxant effect. Overall, the present results suggest that the stimulation of eNOS, the opening of Ca2+-activated and voltage-activated K+ channels, the stimulation of prostaglandin synthesis and enhanced protein levels of eNOS, inducible nitric oxide synthase, constitutive cyclooxygenase, and inducible cyclooxygenase are involved in this relaxant effect.
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Affiliation(s)
- Jorge Skiold López-Canales
- Section of Postgraduate Studies, Higher School of Medicine, National Polytechnic Institute, Mexico City, Mexico.,Department of Cellular Biology, National Intstitute of Perinatology, Mexico City, Mexico
| | - Jair Lozano-Cuenca
- Department of Cellular Biology, National Intstitute of Perinatology, Mexico City, Mexico
| | - Oscar Alberto López-Canales
- Section of Postgraduate Studies, Higher School of Medicine, National Polytechnic Institute, Mexico City, Mexico
| | | | - Lidia Aranda-Zepeda
- Section of Postgraduate Studies, Higher School of Medicine, National Polytechnic Institute, Mexico City, Mexico
| | - Pedro López-Sánchez
- Section of Postgraduate Studies, Higher School of Medicine, National Polytechnic Institute, Mexico City, Mexico
| | | | - Ruth Mery López-Mayorga
- Section of Postgraduate Studies, Higher School of Medicine, National Polytechnic Institute, Mexico City, Mexico
| | - Ignacio Valencia-Hernández
- Section of Postgraduate Studies, Higher School of Medicine, National Polytechnic Institute, Mexico City, Mexico
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Petit M, Guihot AL, Grimaud L, Vessieres E, Toutain B, Menet MC, Nivet-Antoine V, Arnal JF, Loufrani L, Procaccio V, Henrion D. Resveratrol Improved Flow-Mediated Outward Arterial Remodeling in Ovariectomized Rats with Hypertrophic Effect at High Dose. PLoS One 2016; 11:e0146148. [PMID: 26734763 PMCID: PMC4703409 DOI: 10.1371/journal.pone.0146148] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 12/14/2015] [Indexed: 12/25/2022] Open
Abstract
Objectives Chronic increases in blood flow in resistance arteries induce outward remodeling associated with increased wall thickness and endothelium-mediated dilatation. This remodeling is essential for collateral arteries growth following occlusion of a large artery. As estrogens have a major role in this remodeling, we hypothesized that resveratrol, described as possessing phytoestrogen properties, could improve remodeling in ovariectomized rats. Methods Blood flow was increased in vivo in mesenteric arteries after ligation of adjacent arteries in 3-month old ovariectomized rats treated with resveratrol (5 or 37.5 mg/kg per day: RESV5 or RESV37.5) or vehicle. After 2 weeks arterial structure and function were measured in vitro in high flow (HF) and normal flow (NF) arteries isolated from each rat. Results Arterial diameter was greater in HF than in NF arteries in ovariectomized rats treated with RESV5 or RESV37.5, not in vehicle-treated rats. In mice lacking estrogen receptor alpha diameter was equivalent in HF and NF arteries whereas in mice treated with RESV5 diameter was greater in HF than in NF vessels. A compensatory increase in wall thickness and a greater phenylephrine-mediated contraction were observed in HF arteries. This was more pronounced in HF arteries from RESV37.5-treated rats. ERK1/2 phosphorylation, involved in hypertrophy and contraction, were higher in RESV37.5-treated rats than in RESV5- and vehicle-treated rats. Endothelium-dependent relaxation was greater in HF than in NF arteries in RESV5-treated rats only. In HF arteries from RESV37.5-treated rats relaxation was increased by superoxide reduction and markers of oxidative stress (p67phox, GP91phox) were higher than in the 2 other groups. Conclusion Resveratrol improved flow-mediated outward remodeling in ovariectomized rats thus providing a potential therapeutic tool in menopause-associated ischemic disorders. This effect seems independent of the estrogen receptor alpha. Nevertheless, caution should be taken with high doses inducing excessive contractility and hypertrophy in association with oxidative stress in HF arteries.
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Affiliation(s)
| | | | | | - Emilie Vessieres
- University of Angers, Angers, France
- CARFI (Cardiovascular Function In vitro) facility, Angers, France
| | | | - Marie-Claude Menet
- UMR-S1144, Faculty of Pharmacy, Paris Descartes University, Paris, France, and Assistance Publique Hôpitaux de Paris, Department of Biochemistry, Cochin Hospital, Paris, France
| | - Valérie Nivet-Antoine
- UMR-S1140, Faculty of Pharmacy, Paris Descartes University, Paris, France, and Assistance Publique Hôpitaux de Paris, Department of Biochemistry, Georges Pompidou European Hospital, Paris, France
| | - Jean-François Arnal
- INSERM U1048, Toulouse III Paul Sabatier University, University hospital of Toulouse, Toulouse, France
| | - Laurent Loufrani
- University of Angers, Angers, France
- CNRS UMR-6214, Angers, France
- INSERM UMRS-1083, Angers, France
- UMR-S1144, Faculty of Pharmacy, Paris Descartes University, Paris, France, and Assistance Publique Hôpitaux de Paris, Department of Biochemistry, Cochin Hospital, Paris, France
- University hospital (CHU) of Angers, Angers, France
| | - Vincent Procaccio
- University of Angers, Angers, France
- CNRS UMR-6214, Angers, France
- INSERM UMRS-1083, Angers, France
- University hospital (CHU) of Angers, Angers, France
| | - Daniel Henrion
- University of Angers, Angers, France
- CNRS UMR-6214, Angers, France
- INSERM UMRS-1083, Angers, France
- CARFI (Cardiovascular Function In vitro) facility, Angers, France
- University hospital (CHU) of Angers, Angers, France
- * E-mail:
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Vasodilatory effect of a novel Rho-kinase inhibitor, DL0805-2, on the rat mesenteric artery and its potential mechanisms. Cardiovasc Drugs Ther 2015; 28:415-24. [PMID: 25086815 DOI: 10.1007/s10557-014-6544-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
PURPOSE In the present study, we investigated the vasodilatory effect of a novel scaffold Rho-kinase inhibitor, DL0805-2, on isolated rat arterial rings including mesenteric, ventral tail, and renal arteries. We also examined the potential mechanisms of its vasodilatory action using mesenteric artery rings. METHODS A DMT multiwire myograph system was used to test the tension of isolated small arteries. Several drugs were employed to verify the underlying mechanisms. RESULTS DL0805-2 (10(-7)-10(-4) M) inhibited KCl (60 mM)-induced vasoconstriction in three types of small artery rings (pEC50: 5.84 ± 0.03, 5.39 ± 0.03, and 5.67 ± 0.02 for mesenteric, renal, and ventral tail artery rings, respectively). Pre-incubation with DL0805-2 (1, 3, or 10 μM) attenuated KCl (10-60 mM) and angiotensin II (AngII; 10(-6) M)-induced vasoconstriction in mesenteric artery rings. The relaxant effect on the rat mesenteric artery was partially endothelium-dependent (pEC50: 6.02 ± 0.05 for endothelium-intact and 5.72 ± 0.06 for endothelium-denuded). The influx and release of Ca(2+) were inhibited by DL0805-2. In addition, the increased phosphorylation levels of myosin light chain (MLC) and myosin-binding subunit of myosin phosphatase (MYPT1) induced by AngII were blocked by DL0805-2. However, DL0805-2 had little effect on K(+) channels. CONCLUSIONS The present results demonstrate that DL0805-2 has a vasorelaxant effect on isolated rat small arteries and may exert its action through the endothelium, Ca(2+) channels, and the Rho/ROCK pathway.
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Tarhouni K, Freidja ML, Guihot AL, Vessieres E, Grimaud L, Toutain B, Lenfant F, Arnal JF, Loufrani L, Henrion D. Role of estrogens and age in flow-mediated outward remodeling of rat mesenteric resistance arteries. Am J Physiol Heart Circ Physiol 2014; 307:H504-14. [DOI: 10.1152/ajpheart.00986.2013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In resistance arteries, a chronic increase in blood flow induces hypertrophic outward remodeling. This flow-mediated remodeling (FMR) is absent in male rats aged 10 mo and more. As FMR depends on estrogens in 3-mo-old female rats, we hypothesized that it might be preserved in 12-mo-old female rats. Blood flow was increased in vivo in mesenteric resistance arteries after ligation of the side arteries in 3- and 12-mo-old male and female rats. After 2 wk, high-flow (HF) and normal-flow (NF) arteries were isolated for in vitro analysis. Arterial diameter and cross-sectional area increased in HF arteries compared with NF arteries in 3-mo-old male and female rats. In 12-mo-old rats, diameter increased only in female rats. Endothelial nitric oxide synthase expression and endothelium-mediated relaxation were higher in HF arteries than in NF arteries in all groups. ERK1/2 phosphorylation, NADPH oxidase subunit expression levels, and arterial contractility to KCl and to phenylephrine were greater in HF vessels than in NF vessels in 12-mo-old male rats only. Ovariectomy in 12-mo-old female rats induced a similar pattern with an increased contractility without diameter increase in HF arteries. Treatment of 12-mo-old male rats and ovariectomized female rats with hydralazine, the antioxidant tempol, or the angiotensin II type 1 receptor blocker candesartan restored HF remodeling and normalized arterial contractility in HF vessels. Thus, we found that FMR of resistance arteries remains efficient in 12-mo-old female rats compared with age-matched male rats. A balance between estrogens and vascular contractility might preserve FMR in mature female rats.
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Affiliation(s)
- K. Tarhouni
- L'Université Nantes Angers Le Mans University and University of Angers, Angers, France
| | - M. L. Freidja
- L'Université Nantes Angers Le Mans University and University of Angers, Angers, France
| | - A. L. Guihot
- Unité Mixte de Recherche 6214, Centre National de la Recherche Scientifique, Angers, France
| | | | - L. Grimaud
- L'Université Nantes Angers Le Mans University and University of Angers, Angers, France
- CHU d'Angers, Angers, France; and
| | - B. Toutain
- L'Université Nantes Angers Le Mans University and University of Angers, Angers, France
| | - F. Lenfant
- U858, Institut National de la Santé et de la Recherche Médicale, Université Toulouse III Paul Sabatier, CHU de Toulouse, Toulouse, France
| | - J. F. Arnal
- U858, Institut National de la Santé et de la Recherche Médicale, Université Toulouse III Paul Sabatier, CHU de Toulouse, Toulouse, France
| | - L. Loufrani
- L'Université Nantes Angers Le Mans University and University of Angers, Angers, France
- Unité Mixte de Recherche 6214, Centre National de la Recherche Scientifique, Angers, France
- U1083, Institut National de la Santé et de la Recherche Médicale, Angers, France
- CHU d'Angers, Angers, France; and
| | - D. Henrion
- L'Université Nantes Angers Le Mans University and University of Angers, Angers, France
- Unité Mixte de Recherche 6214, Centre National de la Recherche Scientifique, Angers, France
- U1083, Institut National de la Santé et de la Recherche Médicale, Angers, France
- CHU d'Angers, Angers, France; and
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Western diet consumption promotes vascular remodeling in non-senescent mice consistent with accelerated senescence, but does not modify vascular morphology in senescent ones. Exp Gerontol 2014; 55:1-11. [DOI: 10.1016/j.exger.2014.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 02/20/2014] [Accepted: 03/02/2014] [Indexed: 11/17/2022]
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Liu L, Liu J, Gao Y, Yu X, Dou D, Huang Y. Protein kinase Cδ contributes to phenylephrine-mediated contraction in the aortae of high fat diet-induced obese mice. Biochem Biophys Res Commun 2014; 446:1179-83. [DOI: 10.1016/j.bbrc.2014.03.065] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 03/17/2014] [Indexed: 12/22/2022]
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COX-2-derived prostanoids and oxidative stress additionally reduce endothelium-mediated relaxation in old type 2 diabetic rats. PLoS One 2013; 8:e68217. [PMID: 23874545 PMCID: PMC3706542 DOI: 10.1371/journal.pone.0068217] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 05/29/2013] [Indexed: 01/05/2023] Open
Abstract
Endothelial dysfunction in resistance arteries alters end organ perfusion in type 2 diabetes. Superoxides and cyclooxygenase-2 (COX-2) derivatives have been shown separately to alter endothelium-mediated relaxation in aging and diabetes but their role in the alteration of vascular tone in old diabetic subjects is not clear, especially in resistance arteries. Consequently, we investigated the role of superoxide and COX-2-derivatives on endothelium-dependent relaxation in 3 and 12 month-old Zucker diabetic fatty (ZDF) and lean (LZ) rats. Mesenteric resistance arteries were isolated and vascular tone was investigated using wire-myography. Endothelium (acetylcholine)-dependent relaxation was lower in ZDF than in LZ rats (60 versus 84% maximal relaxation in young rats and 41 versus 69% in old rats). Blocking NO production with L-NAME was less efficient in old than in young rats. L-NAME had no effect in old ZDF rats although eNOS expression level in old ZDF rats was similar to that in old LZ rats. Superoxide level and NADPH-oxidase subunits (p67phox and gp91phox) expression level were greater in ZDF than in LZ rats and were further increased by aging in ZDF rats. In young ZDF rats reducing superoxide level with tempol restored acetylcholine-dependent relaxation to the level of LZ rats. In old ZDF rats tempol improved acetylcholine-dependent relaxation without increasing it to the level of LZ rats. COX-2 (immunolabelling and Western-blot) was present in arteries of ZDF rats and absent in LZ rats. In old ZDF rats arterial COX-2 level was higher than in young ZDF rats. COX-2 blockade with NS398 restored in part acetylcholine-dependent relaxation in arteries of old ZDF rats and the combination of tempol and NS398 fully restored relaxation in control (LZ rats) level. Accordingly, superoxide production and COX-2 derivatives together reduced endothelium-dependent relaxation in old ZDF rats whereas superoxides alone attenuated relaxation in young ZDF or old LZ rats.
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