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Cros-Brunsó L, Camacho-Rodríguez L, Martínez-González Á, Llévenes P, Salaices M, García-Redondo AB, Blanco-Rivero J. A Blunted Sympathetic Function and an Enhanced Nitrergic Activity Contribute to Reduce Mesenteric Resistance in Hyperthyroidism. Int J Mol Sci 2021; 22:ijms22020570. [PMID: 33430047 PMCID: PMC7826714 DOI: 10.3390/ijms22020570] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/30/2020] [Accepted: 01/04/2021] [Indexed: 12/17/2022] Open
Abstract
We aimed to determine whether an experimental model of hyperthyroidism could alter the function of sympathetic and nitrergic components of mesenteric innervation. For this purpose, male Wistar rats were divided into (1) control rats (CT) and (2) rats infused with L-Thyroxine (HT). Body weight gain and adipose tissue accumulation were lower in HT rats, while systolic blood pressure and citrate synthase activity in the soleus muscle were increased by HT. In segments from the superior mesenteric artery, the application of an electrical field stimulation (EFS) induced a vasoconstrictor response, which was lower in arteries from HT animals. The alpha-adrenoceptor antagonist phentolamine diminished EFS-induced vasoconstriction to a lower extent in HT arteries, while the purinergic receptor antagonist suramin reduced contractile response to EFS only in segments from CT. In line with this, noradrenaline release, tyrosine hydroxylase expression and activation and dopamine β hydroxylase expression were diminished in HT. The unspecific nitric oxide synthase (NOS) inhibitor L-NAME increased EFS-induced vasoconstriction more markedly in segments from HT rats. NO release was enhanced in HT, probably due to an enhancement in neuronal NOS activity, in which a hyperactivation of both PKC and PI3K-AKT signaling pathways might play a relevant role. In conclusion, perivascular mesenteric innervation might contribute to reduce the vascular resistance observed in hyperthyroidism.
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Affiliation(s)
- Laia Cros-Brunsó
- Department of Physiology, School of Medicine, Universidad Autónoma de Madrid, Calle de Arzobispo Morcillo 4, 28029 Madrid, Spain; (L.C.-B.); (L.C.-R.); (Á.M.-G.); (P.L.)
| | - Laura Camacho-Rodríguez
- Department of Physiology, School of Medicine, Universidad Autónoma de Madrid, Calle de Arzobispo Morcillo 4, 28029 Madrid, Spain; (L.C.-B.); (L.C.-R.); (Á.M.-G.); (P.L.)
| | - Ángel Martínez-González
- Department of Physiology, School of Medicine, Universidad Autónoma de Madrid, Calle de Arzobispo Morcillo 4, 28029 Madrid, Spain; (L.C.-B.); (L.C.-R.); (Á.M.-G.); (P.L.)
| | - Pablo Llévenes
- Department of Physiology, School of Medicine, Universidad Autónoma de Madrid, Calle de Arzobispo Morcillo 4, 28029 Madrid, Spain; (L.C.-B.); (L.C.-R.); (Á.M.-G.); (P.L.)
| | - Mercedes Salaices
- Department of Pharmacology and Therapeutics, School of Medicine, Universidad Autónoma de Madrid, Calle de Arzobispo Morcillo 4, 28029 Madrid, Spain;
- Research Institute University Hospital la Paz (IdIPaz), Calle de Pedro Rico 6, 28029 Madrid, Spain
- Center for Biomedical Research Network in Cardiovascular Diseases (CIBERCV), Calle de Melchor Fernández Almagro 3, 28029 Madrid, Spain
| | - Ana Belen García-Redondo
- Department of Physiology, School of Medicine, Universidad Autónoma de Madrid, Calle de Arzobispo Morcillo 4, 28029 Madrid, Spain; (L.C.-B.); (L.C.-R.); (Á.M.-G.); (P.L.)
- Research Institute University Hospital la Paz (IdIPaz), Calle de Pedro Rico 6, 28029 Madrid, Spain
- Center for Biomedical Research Network in Cardiovascular Diseases (CIBERCV), Calle de Melchor Fernández Almagro 3, 28029 Madrid, Spain
- Correspondence: (A.B.G.-R.); (J.B.-R.); Tel.: +34-91-497-5446 (A.B.G.-R. & J.B.-R.)
| | - Javier Blanco-Rivero
- Department of Physiology, School of Medicine, Universidad Autónoma de Madrid, Calle de Arzobispo Morcillo 4, 28029 Madrid, Spain; (L.C.-B.); (L.C.-R.); (Á.M.-G.); (P.L.)
- Research Institute University Hospital la Paz (IdIPaz), Calle de Pedro Rico 6, 28029 Madrid, Spain
- Center for Biomedical Research Network in Cardiovascular Diseases (CIBERCV), Calle de Melchor Fernández Almagro 3, 28029 Madrid, Spain
- Correspondence: (A.B.G.-R.); (J.B.-R.); Tel.: +34-91-497-5446 (A.B.G.-R. & J.B.-R.)
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Potue P, Wunpathe C, Maneesai P, Kukongviriyapan U, Prachaney P, Pakdeechote P. Nobiletin alleviates vascular alterations through modulation of Nrf-2/HO-1 and MMP pathways in l-NAME induced hypertensive rats. Food Funct 2019; 10:1880-1892. [DOI: 10.1039/c8fo02408a] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Nobiletin alleviates l-NAME-induced vascular dysfunction and remodeling and superoxide production in rats.
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Affiliation(s)
- Prapassorn Potue
- Department of Physiology
- Faculty of Medicine
- Khon Kaen University
- Khon Kaen
- Thailand
| | - Chutamas Wunpathe
- Department of Physiology
- Faculty of Medicine
- Khon Kaen University
- Khon Kaen
- Thailand
| | | | - Upa Kukongviriyapan
- Department of Physiology
- Faculty of Medicine
- Khon Kaen University
- Khon Kaen
- Thailand
| | - Parichat Prachaney
- Department of Anatomy
- Faculty of Medicine
- Khon Kaen University
- Khon Kaen
- Thailand
| | - Poungrat Pakdeechote
- Department of Physiology
- Faculty of Medicine
- Khon Kaen University
- Khon Kaen
- Thailand
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Llévenes P, Balfagón G, Blanco-Rivero J. Thyroid hormones affect nitrergic innervation function in rat mesenteric artery: Role of the PI3K/AKT pathway. Vascul Pharmacol 2018; 108:36-45. [PMID: 29751093 DOI: 10.1016/j.vph.2018.05.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 03/20/2018] [Accepted: 05/06/2018] [Indexed: 01/30/2023]
Abstract
We aimed to determine the influence of nitrergic innervation function on the decreased mesenteric arterial tone induced by high levels of triiodothyronine (T3), as a model of acute thyroiditis, as well as the mechanism/s implicated. We analysed in mesenteric segments from male Wistar rats the effect of 10 nmol/L T3 (2 h) on the vasomotor response to electrical field stimulation (EFS) in the presence/absence of specific neuronal NOS (nNOS) inhibitor L-NPA, or superoxide anion scavenger tempol. Nitric oxide (NO) release was measured in the presence/absence of tempol or PI3K inhibitor LY294002. Superoxide anion and peroxynitrite releases, nNOS, PI3K, AKT and superoxide dismutase (SOD) 1 and 2 expressions, nNOS and AKT phosphorylation, and SOD activity were analysed. T3 decreased EFS-induced vasoconstriction. L-NPA increased EFS-induced vasoconstriction more markedly in T3-incubated segments. T3 increased NO release. Tempol decreased EFS-induced vasoconstriction and augmented NO release only in segments without T3. LY294002 decreased NO release in T3-incubated segments. T3 diminished superoxide anion and peroxynitrite formation, enhanced SOD-2 expression, nNOS and AKT phosphorylations and SOD activity, and did not modify nNOS, PI3K, AKT and SOD-1 expressions. In conclusion, these results show a compensatory mechanism aimed at reducing the enhanced blood pressure that appears during acute thyroiditis.
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Affiliation(s)
- Pablo Llévenes
- Departamento de Fisiología, Facultad de Medicina, Universidad Autónoma de Madrid, Spain
| | - Gloria Balfagón
- Departamento de Fisiología, Facultad de Medicina, Universidad Autónoma de Madrid, Spain; Instituto de Investigación Hospital Universitario La Paz (IdIPaz), Spain
| | - Javier Blanco-Rivero
- Departamento de Fisiología, Facultad de Medicina, Universidad Autónoma de Madrid, Spain; Instituto de Investigación Hospital Universitario La Paz (IdIPaz), Spain.
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Sastre E, Caracuel L, Prieto I, Llévenes P, Aller MÁ, Arias J, Balfagón G, Blanco-Rivero J. Decompensated liver cirrhosis and neural regulation of mesenteric vascular tone in rats: role of sympathetic, nitrergic and sensory innervations. Sci Rep 2016; 6:31076. [PMID: 27484028 PMCID: PMC4971476 DOI: 10.1038/srep31076] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 07/14/2016] [Indexed: 02/08/2023] Open
Abstract
We evaluated the possible alterations produced by liver cholestasis (LC), a model of decompensated liver cirrhosis in sympathetic, sensory and nitrergic nerve function in rat superior mesenteric arteries (SMA). The vasoconstrictor response to electrical field stimulation (EFS) was greater in LC animals. Alpha-adrenoceptor antagonist phentolamine and P2 purinoceptor antagonist suramin decreased this response in LC animals more than in control animals. Both non-specific nitric oxide synthase (NOS) L-NAME and calcitonin gene related peptide (CGRP) (8-37) increased the vasoconstrictor response to EFS more strongly in LC than in control segments. Vasomotor responses to noradrenaline (NA) or CGRP were greater in LC segments, while NO analogue DEA-NO induced a similar vasodilation in both experimental groups. The release of NA was not modified, while those of ATP, nitrite and CGRP were increased in segments from LC. Alpha 1 adrenoceptor, Rho kinase (ROCK) 1 and 2 and total myosin phosphatase (MYPT) expressions were not modified, while alpha 2B adrenoceptor, nNOS expression and nNOS and MYPT phosphorylation were increased by LC. Together, these alterations might counteract the increased splanchnic vasodilation observed in the last phases of decompensated liver cirrhosis.
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Affiliation(s)
- Esther Sastre
- Departamento de Fisiología, Facultad de Medicina, Universidad Autónoma de Madrid, España.,Instituto de Investigación Sanitaria del Hospital Universitario La Paz (IdiPAZ), Madrid, España
| | - Laura Caracuel
- Departamento de Fisiología, Facultad de Medicina, Universidad Autónoma de Madrid, España.,Instituto de Investigación Sanitaria del Hospital Universitario La Paz (IdiPAZ), Madrid, España
| | - Isabel Prieto
- Instituto de Investigación Sanitaria del Hospital Universitario La Paz (IdiPAZ), Madrid, España.,Departamento de Cirugía General y Digestiva, Hospital la Paz, Madrid, España
| | - Pablo Llévenes
- Departamento de Fisiología, Facultad de Medicina, Universidad Autónoma de Madrid, España
| | - M Ángeles Aller
- Cátedra de Cirugía, Facultad de Medicina, Universidad Complutense de Madrid, España
| | - Jaime Arias
- Cátedra de Cirugía, Facultad de Medicina, Universidad Complutense de Madrid, España
| | - Gloria Balfagón
- Departamento de Fisiología, Facultad de Medicina, Universidad Autónoma de Madrid, España.,Instituto de Investigación Sanitaria del Hospital Universitario La Paz (IdiPAZ), Madrid, España
| | - Javier Blanco-Rivero
- Departamento de Fisiología, Facultad de Medicina, Universidad Autónoma de Madrid, España.,Instituto de Investigación Sanitaria del Hospital Universitario La Paz (IdiPAZ), Madrid, España
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Nunes DO, Almenara CCP, Broseghini-Filho GB, Silva MASC, Stefanon I, Vassallo DV, Padilha AS. Flaxseed oil increases aortic reactivity to phenylephrine through reactive oxygen species and the cyclooxygenase-2 pathway in rats. Lipids Health Dis 2014; 13:107. [PMID: 24993607 PMCID: PMC4226993 DOI: 10.1186/1476-511x-13-107] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 06/23/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Flaxseed oil has the highest concentration of omega-3 α-linolenic acid, which has been associated with cardiovascular benefit. However, the mechanism underlying the vascular effects induced through flaxseed oil is not well known. Thus, in the present study, we investigated the effects of flaxseed oil on vascular function in isolated rat aortic rings. METHODS Wistar rats were treated daily with flaxseed oil or a control (mineral oil) intramuscular (i.m.) for fifteen days. Isolated aortic segments were used to evaluate cyclooxygenase-2 (COX-2) protein expression, superoxide anion levels and vascular reactivity experiments. RESULTS Flaxseed oil treatment increased the vasoconstrictor response of aortic rings to phenylephrine. Endothelium removal increased the response to phenylephrine in aortic segments isolated from both groups, but the effect was smaller in the treated group. L-NAME incubation similarly increased the phenylephrine response in segments from both groups. The TXA2 synthase inhibitor furegrelate, the selective COX-2 inhibitor NS 398, the TP receptor antagonist SQ 29.548, the reactive oxygen species (ROS) scavenger apocynin, the superoxide anion scavengers tiron and the phospholipase A2 inhibitor dexamethasone partially reversed the flaxseed oil-induced increase in reactivity to phenylephrine. CONCLUSIONS These findings suggest that flaxseed oil treatment increased vascular reactivity to phenylephrine through an increase in ROS production and COX-2-derived TXA2 production. The results obtained in the present study provide new insight into the effects of flaxseed oil treatment (i.m.) on vascular function.
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Affiliation(s)
| | | | | | | | | | | | - Alessandra S Padilha
- Department of Physiological Sciences, Federal University of Espirito Santo, Av, Marechal Campos, 1468, Maruípe, 29040-091 Vitória, ES, Brazil.
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Bagnost T, Ma L, da Silva RF, Rezakhaniha R, Houdayer C, Stergiopulos N, André C, Guillaume Y, Berthelot A, Demougeot C. Cardiovascular effects of arginase inhibition in spontaneously hypertensive rats with fully developed hypertension. Cardiovasc Res 2010; 87:569-77. [PMID: 20219858 DOI: 10.1093/cvr/cvq081] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
AIMS Growing evidence suggests that arginase misregulation plays a key role in the pathophysiology of essential hypertension. In the present study, we investigated the potential cardiovascular therapeutic effects of a long-term treatment with an arginase inhibitor in adult spontaneously hypertensive rats (SHR) with fully developed hypertension. METHODS AND RESULTS Treatment of 25-week-old SHR with the arginase inhibitor N(omega)-hydroxy-nor-L-arginine (nor-NOHA, 40 mg/day for 10 weeks) sustainably reduced systolic blood pressure (-30 mmHg, P < 0.05). The antihypertensive effect of nor-NOHA was associated with changes on mesenteric artery reactivity including the restoration of angiotensin-II-induced contraction and acetylcholine-induced vasodilation to the values of normotensive Wistar Kyoto rats. Both nitric oxide synthase and cyclooxygenase-dependent mechanisms account for the improvement of endothelial function afforded by the arginase inhibitor, which in addition blunted hypertension-induced endothelial arginase I overexpression in mesenteric arteries. Nor-NOHA also prevented the remodelling of aorta as measured by collagen content and media/lumen ratio, and improved the compliance of carotid artery in SHR. Cardiac fibrosis assessed by collagen content of left heart ventricle was reduced by nor-NOHA, with no significant effect on cardiac hypertrophy. CONCLUSION Our results report that a long-term treatment with an arginase inhibitor reduced blood pressure, improved vascular function, and reduced cardiac fibrosis in SHR with fully developed hypertension. These data suggest that arginase represents a promising novel target for pharmacological intervention in essential hypertension.
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Affiliation(s)
- Teddy Bagnost
- Laboratoire de Physiologie - Pharmacologie - Nutrition - Préventive Expérimentale, Equipe Sciences Séparatives Biologiques et Pharmaceutiques, EA-4267, Faculté de Médecine-Pharmacie, Besançon, Place Saint-Jacques, Besançon cedex 25030, France
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Choi M, Yoon J, Choi C. Label-free optical control of arterial contraction. JOURNAL OF BIOMEDICAL OPTICS 2010; 15:015006. [PMID: 20210446 DOI: 10.1117/1.3316404] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The diameters of blood vessels, especially in the brain, change dynamically over time to provide sufficient blood supply as needed. No existing technique allows noninvasive control of vascular diameter in vivo. We report that label-free irradiation with a femtosecond pulsed laser can trigger blood vessel contraction in vivo. In response to laser irradiation, cultured vascular smooth muscle cells showed a rapid increase in calcium concentration, followed by cell contraction. In a murine thinned skull window model, laser irradiation focused in the arterial vessel wall caused localized vascular contraction, followed by recovery. The nonlinear nature of the pulsed laser allowed highly specific targeting of subcortical vessels without affecting the surrounding region. We believe that femtosecond pulsed laser irradiation will become a useful experimental tool in the field of vascular biology.
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Affiliation(s)
- Myunghwan Choi
- Korea Advanced Institute of Science and Technology (KAIST), Department of Bio and Brain Engineering, Yuseong-gu, Daejeon, Korea
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Dexamethasone decreases neuronal nitric oxide release in mesenteric arteries from hypertensive rats through decreased protein kinase C activation. Clin Sci (Lond) 2009; 117:305-12. [DOI: 10.1042/cs20080178] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Neuronal NO plays a functional role in many vascular tissues, including MAs (mesenteric arteries). Glucocorticoids alter NO release from endothelium and the CNS (central nervous system), but no results from peripheral innervation have been reported. In the present study we investigated the effects of dexamethasone on EFS (electrical field stimulation)-induced NO release in MAs from WKY (Wistar–Kyoto) rats and SHRs (spontaneously hypertensive rats) and the role of PKC (protein kinase C) in this response. In endothelium-denuded MAs, L-NAME (NG-nitro-L-arginine methyl ester) increased the contractile response to EFS only in segments from SHRs. EFS-induced contraction was reduced by 1 μmol/l dexamethasone in segments from SHRs, but not WKY rats, and this effect was abolished in the presence of dexamethasone. EFS induced a tetrodotoxin-resistant NO release in WKY rat MAs, which remained unchanged by 1 μmol/l dexamethasone. In SHR MAs, dexamethasone decreased basal and EFS-induced neuronal NO release, and this decrease was prevented by the glucocorticoid receptor antagonist mifepristone. Dexamethasone did not affect nNOS [neuronal NOS (NO synthase)] expression in either strain. In SHR MAs, incubation with calphostin C (a non-selective PKC inhibitor), Gö6983 (a classic PKC δ and ζ inhibitor), LY379196 (a PKCβ inhibitor) or PKCζ-PI (PKCζ pseudosubstrate inhibitor) decreased both basal and EFS-induced neuronal NO release. Additionally, PKC activity was reduced by dexamethasone. The PKC inhibitor-induced reduction in NO release was unaffected by dexamethasone. In conclusion, results obtained in the present study indicate that PKC activity positively modulates the neuronal NO release in MAs from SHRs. They also reveal that by PKC inhibition, through activation of glucocorticoid receptors, dexamethasone reduces neuronal NO release in these arteries.
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