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Gacar G, Gocmez SS, Halbutoğulları ZS, Kılıç KC, Kaya A, Yazir Y, Utkan T. Resveratrol improves vascular endothelial dysfunction in the unpredictable chronic mild stress model of depression in rats by reducing inflammation. Behav Brain Res 2023; 438:114186. [PMID: 36336162 DOI: 10.1016/j.bbr.2022.114186] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/13/2022] [Accepted: 10/30/2022] [Indexed: 11/06/2022]
Abstract
Chronic psychological stress may cause depression and it is a risk factor for vascular endothelial dysfunction. Inflammation may contribute to endothelial dysfunction. Resveratrol, which has antiinflammatory and vasculoprotective properties, has been reported its beneficial effects on endothelial dysfunction induced by hypertension, diabetes and, aging. The effects of resveratrol on stress-induced endothelial dysfunction is not investigated yet. This study aimed to investigate the efficacy of resveratrol on vascular function in the unpredictable chronic moderate stress (UCMS) model of rats and to examine the possible mechanisms of resveratrol by assessment of proinflammatory markers. Male rats were assigned to 4 groups (n = 8 for each group): Control, Control+Resveratrol, UCMS, UCMS+Resveratrol. UCMS and UCMS+Resveratrol groups were exposed to the UCMS procedure for 12 weeks. Resveratrol (20 mg/kg/day, i.p., during 12 weeks) was given to the Control+Resveratrol and UCMS+Resveratrol groups.Then depressive-like behaviors were evaluated by forced swimming test. After behavioral tests, systolic blood pressure was recorded. Endothelial function of the thoracic aorta was evaluated by isolated organ bath system. Vascular eNOS expression and inflammatory markers such as TNF-α, IL-1β, IL-6, CRP, ICAM1, MCP in serum and vascular tissue were analyzed to explore the mechanisms of resveratrol. UCMS resulted in depressive-like behavior, endothelial dysfunction and increased inflammatory cytokines in both serum and tissue samples. Resveratrol treatment improved depressive-like behavior, ameliorated vascular dysfunction, and reversed stress-induced inflammation. Our findings suggest that resveratrol exerted antidepressant-like effect and prevented vascular endothelial dysfunction by reducing systemic and peripheral inflammation in UCMS-induced depression in rats. Therefore, resveratrol may be a therapeutic option with a vasculoprotective effect in depression.
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Affiliation(s)
- Gülçin Gacar
- Kocaeli University Center for Stem Cell and Gene Therapies Research and Practice, Institute of Health Sciences, Kocaeli, Turkey
| | - Semil Selcen Gocmez
- Kocaeli University Faculty of Medicine, Department of Pharmacology, Kocaeli, Turkey
| | - Zehra Seda Halbutoğulları
- Kocaeli University Center for Stem Cell and Gene Therapies Research and Practice, Institute of Health Sciences, Kocaeli, Turkey; Kocaeli University Faculty of Medicine, Department of Medical Biology, Kocaeli, Turkey
| | - Kamil Can Kılıç
- Kocaeli University Center for Stem Cell and Gene Therapies Research and Practice, Institute of Health Sciences, Kocaeli, Turkey
| | - Aysenur Kaya
- Kocaeli University Center for Stem Cell and Gene Therapies Research and Practice, Institute of Health Sciences, Kocaeli, Turkey
| | - Yusufhan Yazir
- Kocaeli University Center for Stem Cell and Gene Therapies Research and Practice, Institute of Health Sciences, Kocaeli, Turkey; Kocaeli University Faculty of Medicine, Department of Histology and Embryology, Kocaeli, Turkey
| | - Tijen Utkan
- Kocaeli University Faculty of Medicine, Department of Pharmacology, Kocaeli, Turkey; Kocaeli University Experimental Medical Research and Application Centre, Kocaeli, Turkey.
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Helman TJ, Headrick JP, Stapelberg NJC, Braidy N. The sex-dependent response to psychosocial stress and ischaemic heart disease. Front Cardiovasc Med 2023; 10:1072042. [PMID: 37153459 PMCID: PMC10160413 DOI: 10.3389/fcvm.2023.1072042] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 04/03/2023] [Indexed: 05/09/2023] Open
Abstract
Stress is an important risk factor for modern chronic diseases, with distinct influences in males and females. The sex specificity of the mammalian stress response contributes to the sex-dependent development and impacts of coronary artery disease (CAD). Compared to men, women appear to have greater susceptibility to chronic forms of psychosocial stress, extending beyond an increased incidence of mood disorders to include a 2- to 4-fold higher risk of stress-dependent myocardial infarction in women, and up to 10-fold higher risk of Takotsubo syndrome-a stress-dependent coronary-myocardial disorder most prevalent in post-menopausal women. Sex differences arise at all levels of the stress response: from initial perception of stress to behavioural, cognitive, and affective responses and longer-term disease outcomes. These fundamental differences involve interactions between chromosomal and gonadal determinants, (mal)adaptive epigenetic modulation across the lifespan (particularly in early life), and the extrinsic influences of socio-cultural, economic, and environmental factors. Pre-clinical investigations of biological mechanisms support distinct early life programming and a heightened corticolimbic-noradrenaline-neuroinflammatory reactivity in females vs. males, among implicated determinants of the chronic stress response. Unravelling the intrinsic molecular, cellular and systems biological basis of these differences, and their interactions with external lifestyle/socio-cultural determinants, can guide preventative and therapeutic strategies to better target coronary heart disease in a tailored sex-specific manner.
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Affiliation(s)
- Tessa J. Helman
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, NSW, Sydney, Australia
- Correspondence: Tessa J. Helman
| | - John P. Headrick
- Schoolof Pharmacy and Medical Sciences, Griffith University, Southport, QLD, Australia
| | | | - Nady Braidy
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, NSW, Sydney, Australia
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Henriquez AR, Snow SJ, Jackson TW, House JS, Alewel DI, Schladweiler MC, Valdez MC, Freeborn DL, Miller CN, Grindstaff R, Kodavanti PRS, Kodavanti UP. Social isolation exacerbates acute ozone inhalation induced pulmonary and systemic health outcomes. Toxicol Appl Pharmacol 2022; 457:116295. [PMID: 36341779 PMCID: PMC9722630 DOI: 10.1016/j.taap.2022.116295] [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: 08/19/2022] [Revised: 10/14/2022] [Accepted: 10/19/2022] [Indexed: 11/06/2022]
Abstract
Psychosocially-stressed individuals might have exacerbated responses to air pollution exposure. Acute ozone exposure activates the neuroendocrine stress response leading to systemic metabolic and lung inflammatory changes. We hypothesized chronic mild stress (CS) and/or social isolation (SI) would cause neuroendocrine, inflammatory, and metabolic phenotypes that would be exacerbated by an acute ozone exposure. Male 5-week-old Wistar-Kyoto rats were randomly assigned into 3 groups: no stress (NS) (pair-housed, regular-handling); SI (single-housed, minimal-handling); CS (single-housed, subjected to mild unpredicted-randomized stressors [restraint-1 h, tilted cage-1 h, shaking-1 h, intermittent noise-6 h, and predator odor-1 h], 1-stressor/day*5-days/week*8-weeks. All animals then 13-week-old were subsequently exposed to filtered-air or ozone (0.8-ppm) for 4 h and immediately necropsied. CS, but not SI animals had increased adrenal weights. However, relative to NS, both CS and SI had lower circulating luteinizing hormone, prolactin, and follicle-stimulating hormone regardless of exposure (SI > CS), and only CS demonstrated lower thyroid-stimulating hormone levels. SI caused more severe systemic inflammation than CS, as evidenced by higher circulating cytokines and cholesterol. Ozone exposure increased urine corticosterone and catecholamine metabolites with no significant stressor effect. Ozone-induced lung injury, and increases in lavage-fluid neutrophils and IL-6, were exacerbated by SI. Ozone severely lowered circulating thyroid-stimulating hormone, prolactin, and luteinizing hormone in all groups and exacerbated systemic inflammation in SI. Ozone-induced increases in serum glucose, leptin, and triglycerides were consistent across stressors; however, increases in cholesterol were exacerbated by SI. Collectively, psychosocial stressors, especially SI, affected the neuroendocrine system and induced adverse metabolic and inflammatory effects that were exacerbated by ozone exposure.
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Affiliation(s)
- Andres R Henriquez
- Oak Ridge Institute for Science and Education Research Participation Program, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
| | - Samantha J Snow
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
| | - Thomas W Jackson
- Oak Ridge Institute for Science and Education Research Participation Program, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
| | - John S House
- Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC 27709, USA
| | - Devin I Alewel
- Oak Ridge Institute for Science and Education Research Participation Program, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
| | - Mette C Schladweiler
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
| | - Matthew C Valdez
- Oak Ridge Institute for Science and Education Research Participation Program, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
| | - Danielle L Freeborn
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
| | - Colette N Miller
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
| | - Rachel Grindstaff
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
| | - Prasada Rao S Kodavanti
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
| | - Urmila P Kodavanti
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA.
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Stress-induced cardiometabolic perturbations, increased oxidative stress and ACE/ACE2 imbalance are improved by endurance training in rats. Life Sci 2022; 305:120758. [DOI: 10.1016/j.lfs.2022.120758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/26/2022] [Accepted: 06/27/2022] [Indexed: 11/22/2022]
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Correa BHM, Becari L, Peliky Fontes MA, Simões-e-Silva AC, Kangussu LM. Involvement of the Renin-Angiotensin System in Stress: State of the Art and Research Perspectives. Curr Neuropharmacol 2022; 20:1212-1228. [PMID: 34554902 PMCID: PMC9886820 DOI: 10.2174/1570159x19666210719142300] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/19/2021] [Accepted: 07/09/2021] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Along with other canonical systems, the renin-angiotensin system (RAS) has shown important roles in stress. This system is a complex regulatory proteolytic cascade composed of various enzymes, peptides, and receptors. Besides the classical (ACE/Ang II/AT1 receptor) and the counter-regulatory (ACE2/Ang-(1-7)/Mas receptor) RAS axes, evidence indicates that nonclassical components, including Ang III, Ang IV, AT2 and AT4, can also be involved in stress. OBJECTIVE AND METHODS This comprehensive review summarizes the current knowledge on the participation of RAS components in different adverse environmental stimuli stressors, including air jet stress, cage switch stress, restraint stress, chronic unpredictable stress, neonatal isolation stress, and post-traumatic stress disorder. RESULTS AND CONCLUSION In general, activation of the classical RAS axis potentiates stress-related cardiovascular, endocrine, and behavioral responses, while the stimulation of the counter-regulatory axis attenuates these effects. Pharmacological modulation in both axes is optimistic, offering promising perspectives for stress-related disorders treatment. In this regard, angiotensin-converting enzyme inhibitors and angiotensin receptor blockers are potential candidates already available since they block the classical axis, activate the counter-regulatory axis, and are safe and efficient drugs.
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Affiliation(s)
- Bernardo H. M. Correa
- Department of Morphology, Biological Sciences Institute, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil;
| | - Luca Becari
- Department of Morphology, Biological Sciences Institute, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil;
| | - Marco Antônio Peliky Fontes
- Department of Physiology & Biophysics - Biological Sciences Institute, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil;
| | - Ana Cristina Simões-e-Silva
- Department of Pediatrics, Faculty of Medicine, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Lucas M. Kangussu
- Department of Morphology, Biological Sciences Institute, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil; ,Address correspondence to this author at the Department of Morphology, Biological Sciences Institute – Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil; Tel: (+55-31) 3409-2772; E-mail:
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Greaney JL, Darling AM, Mogle J, Saunders EFH. Microvascular β-Adrenergic Receptor-Mediated Vasodilation Is Attenuated in Adults With Major Depressive Disorder. Hypertension 2022; 79:1091-1100. [PMID: 35232218 PMCID: PMC9010365 DOI: 10.1161/hypertensionaha.122.18985] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Major depressive disorder (MDD) is associated with sympathetic overactivity and alterations in peripheral adrenergic receptor function; however, no studies have directly assessed vasoconstrictor responsiveness in adults with MDD. We tested the hypotheses that β-adrenergic receptor-mediated vasodilation would be blunted in adults with MDD compared with healthy nondepressed adults (HA) and would functionally contribute to exaggerated norepinephrine-induced vasoconstriction. METHODS In 13 HA (8 female; 24±4 years) and in 12 adults with MDD (8 female; 22±3 yrs), red blood cell flux was measured during graded intradermal microdialysis perfusion of the β-adrenergic receptor agonist isoproterenol (10-10 to 10-4 mol/L) and, separately, during the perfusion of norepinephrine (10-12 to 10-2 mol/L), alone and in combination with the β-adrenergic receptor antagonist propranolol (2 mmol/L). Nonadrenergic vasoconstriction was assessed via perfusion of angiotensin II (10-12 to 10-4 mol/L). RESULTS Isoproterenol-induced vasodilation was blunted in adults with MDD (188.9±70.1 HA versus 128.3±39.4 au MDD, P=0.025). Net norepinephrine-induced vasoconstriction was exaggerated in adults with MDD (-0.16±0.54 HA versus -0.75±0.56 au MDD, P=0.014); however, there were no group differences in angiotensin II-induced vasoconstriction. Propranolol potentiated norepinephrine-induced vasoconstriction in HA (-0.16±0.54 norepinephrine versus -1.60±1.40 au propranolol, P<0.01) but had no effect in adults with MDD (-0.75±0.56 norepinephrine versus -1.58±1.56 au propranolol, P=0.08). CONCLUSIONS β-adrenergic receptor-mediated microvascular vasodilation was blunted in adults with MDD and contributed to exaggerated adrenergic vasoconstriction. The relative loss of the vasoprotective effect of β-adrenergic receptor-mediated vasodilation may contribute to increased peripheral resistance, thereby driving the development of hypertension in adults with MDD.
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Affiliation(s)
- Jody L. Greaney
- Department of Kinesiology, The University of Texas at Arlington, Arlington, TX
| | - Ashley M. Darling
- Department of Kinesiology, The University of Texas at Arlington, Arlington, TX
| | - Jacqueline Mogle
- Edna Bennett Pierce Prevention Research Center, The Pennsylvania State University, University Park, PA
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7
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Recent Progress of Chronic Stress in the Development of Atherosclerosis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:4121173. [PMID: 35300174 PMCID: PMC8923806 DOI: 10.1155/2022/4121173] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 12/04/2021] [Accepted: 02/09/2022] [Indexed: 12/13/2022]
Abstract
With the development of the times, cardiovascular diseases have become the biggest cause of death in the global aging society, causing a serious social burden. Atherosclerosis is a chronic inflammatory disease, which can occur in large and medium-sized blood vessels in the whole body. It takes atherosclerotic plaque as the typical pathological change and endothelial injury as the core pathophysiological mechanism. It is the pathological basis of coronary heart disease, peripheral artery disease, cerebrovascular disease, and other diseases. Recent studies have shown that chronic stress plays an important role in the occurrence and development of atherosclerosis, endothelial injury, lipid metabolism, and chronic inflammation. This process involves a large number of molecular targets. It is usually the cause of atherosclerotic cardiovascular and cerebrovascular diseases. If chronic stress factors exist for a long time, patients have genetic susceptibility, and the combination of environmental factors triggers the pathogenesis, which may eventually lead to complete blockage of the blood vessels, unstable rupture of plaques, and serious adverse cardiovascular events. This paper reviews the role of chronic stress in the occurrence and development of atherosclerosis, focusing on the pathophysiological mechanism.
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Meng LB, Zhang YM, Luo Y, Gong T, Liu DP. Chronic Stress A Potential Suspect Zero of Atherosclerosis: A Systematic Review. Front Cardiovasc Med 2022; 8:738654. [PMID: 34988123 PMCID: PMC8720856 DOI: 10.3389/fcvm.2021.738654] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 11/29/2021] [Indexed: 12/11/2022] Open
Abstract
Atherosclerosis (AS) is a chronic vascular inflammatory disease, in which the lipid accumulation in the intima of the arteries shows yellow atheromatous appearance, which is the pathological basis of many diseases, such as coronary artery disease, peripheral artery disease and cerebrovascular disease. In recent years, it has become the main cause of death in the global aging society, which seriously endangers human health. As a result, research on AS is increasing. Lesions of atherosclerosis contain macrophages, T cells and other cells of the immune response, together with cholesterol that infiltrates from the blood. Recent studies have shown that chronic stress plays an important role in the occurrence and development of AS. From the etiology of disease, social, environmental and genetic factors jointly determine the occurrence of disease. Atherosclerotic cardio-cerebrovascular disease (ASCVD) is often caused by chronic stress (CS). If it cannot be effectively prevented, there will be biological changes in the body environment successively, and then the morphological changes of the corresponding organs. If the patient has a genetic predisposition and a combination of environmental factors triggers the pathogenesis, then chronic stress can eventually lead to AS. Therefore, this paper discusses the influence of chronic stress on AS in the aspects of inflammation, lipid metabolism, endothelial dysfunction, hemodynamics and blood pressure, plaque stability, autophagy, ferroptosis, and cholesterol efflux.
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Affiliation(s)
- Ling-Bing Meng
- Department of Cardiology, National Center of Gerontology, Institute of Geriatric Medicine, Beijing Hospital, Chinese Academy of Medical Sciences, Beijing, China.,Graduate School of Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Yuan-Meng Zhang
- Department of Internal Medicine, The Third Medical Centre of Chinese People's Liberation Army (PLA) General Hospital, The Training Site for Postgraduate of Jinzhou Medical University, Beijing, China
| | - Yue Luo
- Department of Respiratory, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Tao Gong
- Department of Neurology, National Center of Gerontology, National Center of Gerontology, Institute of Geriatric Medicine, Beijing Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - De-Ping Liu
- Department of Cardiology, National Center of Gerontology, Institute of Geriatric Medicine, Beijing Hospital, Chinese Academy of Medical Sciences, Beijing, China.,Graduate School of Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
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Costa R, Carvalho MSM, Brandão JDP, Moreira RP, Cunha TS, Casarini DE, Marcondes FK. Modulatory action of environmental enrichment on hormonal and behavioral responses induced by chronic stress in rats: Hypothalamic renin-angiotensin system components. Behav Brain Res 2020; 397:112928. [PMID: 32987059 DOI: 10.1016/j.bbr.2020.112928] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 09/10/2020] [Accepted: 09/18/2020] [Indexed: 02/07/2023]
Abstract
Environmental enrichment (EE) has been studied as a protocol that can improve brain plasticity and may protect against negative insults such as chronic stress. The aim of this study was to evaluate the effects of EE on the hormonal and behavioral responses induced by chronic mild unpredictable stress (CMS) in rats, considering the involvement of the renin-angiotensin system. Male adult rats were divided into 4 groups: control, CMS, EE, and CMS + EE, and the experimental protocol lasted for 7 weeks. EE was performed during 7 weeks, 5 days per week, 2 h per day. CMS was applied during weeks 3, 4, and 5. After the CMS (week 6), depression-like behavior was evaluated by forced swimming and sucrose consumption tests, anxiety level was evaluated using the elevated plus-maze test, and memory was evaluated using the Y-maze test. On week 7, the animals were euthanized and basal plasma levels of corticosterone and catecholamines were determined. The hypothalamus was isolated and tissue levels of angiotensin peptides were evaluated. CMS increased plasma corticosterone, norepinephrine, and epinephrine basal concentrations, induced depression-like behaviors, impaired memory, and increased hypothalamic angiotensin I, II, and IV concentrations. EE decreased stress hormones secretion, depression-like behaviors, memory impairment, and hypothalamic angiotensin II induced by stress. Reductions of anxiety-like behavior and norepinephrine secretion were observed in both stressed and unstressed groups. The results indicated that EE seemed to protect adult rats against hormonal and behavioral CMS effects, and that the reduction of angiotensin II could contribute to these effects.
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Affiliation(s)
- Rafaela Costa
- Department of Biosciences, Laboratory of Stress, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Maeline Santos Morais Carvalho
- Department of Biosciences, Laboratory of Stress, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | | | - Roseli Peres Moreira
- Nephrology Division, Department of Medicine, Federal University of São Paulo, São Paulo, SP, Brazil
| | - Tatiana Sousa Cunha
- Science and Technology Institute, Federal University of São Paulo, São José Dos Campos, SP, Brazil
| | - Dulce Elena Casarini
- Nephrology Division, Department of Medicine, Federal University of São Paulo, São Paulo, SP, Brazil
| | - Fernanda Klein Marcondes
- Department of Biosciences, Laboratory of Stress, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil.
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Costa R, Tamascia ML, Sanches A, Moreira RP, Cunha TS, Nogueira MD, Casarini DE, Marcondes FK. Tactile stimulation of adult rats modulates hormonal responses, depression-like behaviors, and memory impairment induced by chronic mild stress: Role of angiotensin II. Behav Brain Res 2020; 379:112250. [DOI: 10.1016/j.bbr.2019.112250] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 09/17/2019] [Accepted: 09/17/2019] [Indexed: 12/19/2022]
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11
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Chaffin ATB, Fang Y, Larson KR, Mul JD, Ryan KK. Sex-dependent effects of MC4R genotype on HPA axis tone: implications for stress-associated cardiometabolic disease. Stress 2019; 22:571-580. [PMID: 31184537 PMCID: PMC6690797 DOI: 10.1080/10253890.2019.1610742] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 04/18/2019] [Indexed: 12/15/2022] Open
Abstract
The melanocortin-4 receptor (MC4R) facilitates hypothalamic-pituitary-adrenocortical (HPA) axis responses to acute stress in male rodents and is a well known to regulator of energy balance. Mutations in the MC4R is the most common monogenic cause of obesity in humans and has been associated with sex-specific effects, but whether stress regulation by the MC4R is sex-dependent, and whether the MC4R facilitates HPA responses to chronic stress, is unknown. We hypothesized that MC4R-signaling contributes to HPA axis dysregulation and metabolic pathophysiology following chronic stress exposure. We measured changes in energy balance, HPA axis tone, and vascular remodeling during chronic variable stress (CVS) in male and female rats with MC4R loss-of-function. Rats were placed into three groups (n = 9-18/genotype/sex) and half of each group was subjected to CVS for 30 days or were non-stressed littermate controls. All rats underwent an acute restraint stress challenge on Day 30. Rats were euthanized on Day 31, adrenals collected for weight, and descending aortas fixed for morphological indices of vascular pathophysiology. We observed a marked interaction between Mc4r genotype and sex for basal HPA axis tone and acute stress responsivity. MC4R loss-of-function blunted both endpoints in males but exaggerated them in females. Contrary to our hypothesis, Mc4r genotype had no effect on either HPA axis responses or metabolic responses to chronic stress. Heightened stress reactivity of females with MC4R mutations suggests a possible mechanism for the sex-dependent effects associated with this mutation in humans and highlights how stress may differentially regulate metabolism in males and females. Lay summary The hypothalamic melanocortin system is an important regulator of energy balance and stress responses. Here, we report a sex-difference in the stress reactivity of rats with a mutation in this system. Our findings highlight how stress may regulate metabolism differently in males and females and may provide insight into sex-differences associated with this mutation in humans.
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Affiliation(s)
- Aki T-B Chaffin
- a Department of Neurobiology, Physiology and Behavior, University of California , Davis , CA , USA
| | - Yanbin Fang
- a Department of Neurobiology, Physiology and Behavior, University of California , Davis , CA , USA
| | - Karlton R Larson
- a Department of Neurobiology, Physiology and Behavior, University of California , Davis , CA , USA
| | - Joram D Mul
- b Amsterdam UMC, University of Amsterdam , The Netherlands
- c Metabolism and Reward Group, Netherlands Institute for Neuroscience , Amsterdam , The Netherlands
| | - Karen K Ryan
- a Department of Neurobiology, Physiology and Behavior, University of California , Davis , CA , USA
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Chaihu-Shugan-San and absorbed meranzin hydrate induce anti-atherosclerosis and behavioral improvements in high-fat diet ApoE-/- mice via anti-inflammatory and BDNF-TrkB pathway. Biomed Pharmacother 2019; 115:108893. [DOI: 10.1016/j.biopha.2019.108893] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 04/15/2019] [Accepted: 04/17/2019] [Indexed: 12/31/2022] Open
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13
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Subchronic stress effects on vascular reactivity in C57BL/6 strain mice. Physiol Behav 2019; 204:283-289. [PMID: 30862478 DOI: 10.1016/j.physbeh.2019.03.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 02/27/2019] [Accepted: 03/08/2019] [Indexed: 01/01/2023]
Abstract
BACKGROUND AND AIMS There is a close relationship between psychosocial stress and the development of cardiovascular diseases. It has been reported that there are different alterations in endothelial function in this relationship. However, results obtained in different experimental stress models are controversial. Herein, we studied the effects of subchronic stress induced by movement restraint on several cardiovascular responses and plasma corticosterone concentration in male adult mice. METHODS Experiments were performed in adult male mice of C57BL/6 strain. Animals were allocated into three groups: Control group A, without manipulation; Control group B, with manipulation (quantitation of blood pressure); and Experimental group, with quantitation of blood pressure and exposure to movement restraint. In vivo, heart rate and blood pressure were registered. In vitro, in aortic rings, vascular reactivity was analyzed. Additionally, plasma corticosterone concentration was quantified. RESULTS In vivo, subchronic stress did not produce changes on heart rate either on blood pressure. In vitro, aortic rings with and without endothelium from control group B and experimental group showed: 1) a significant decrease in the maximal tension developed in response to phenylephrine; 2) this decrease was reverted by L-NAME. However, aortic rings from all groups, developed the same tension in response to high K+ solution. In aortic rings from animals of the experimental group, an increase in the maximal relaxation induced by carbachol was observed. This relaxation was prevented and/or reversed by L-NAME. Plasma corticosterone concentration was higher in the experimental group than that in the control group A. CONCLUSIONS Exposition to subchronic movement restraint did not produce alterations in neurovegetative responses in this strain mice. But according to vasomotor responses observed, the results suggest that this subchronic stress model induces an increase in the synthesis/release of nitric oxide, both from endothelial cells and vascular smooth muscle. In accordance with the aforementioned results, we propose that C57BL/6 mice strain is sensitive to subchronic movement restraint stress model.
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Yao BC, Meng LB, Hao ML, Zhang YM, Gong T, Guo ZG. Chronic stress: a critical risk factor for atherosclerosis. J Int Med Res 2019; 47:1429-1440. [PMID: 30799666 PMCID: PMC6460614 DOI: 10.1177/0300060519826820] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Chronic stress refers to the non-specific systemic reaction that occurs when the body is stimulated by various internal and external negative factors over a long time. The physiological response to chronic stress exposure has long been recognized as a potent modulator in the occurrence of atherosclerosis. Furthermore, research has confirmed the correlation between atherosclerosis and cardiovascular events. Chronic stress is pervasive during negative life events and may lead to the formation of plaque. Several epidemiological studies have shown that chronic stress is an independent risk factor for the development of vascular disease and for increased morbidity and mortality in patients with pre-existing coronary artery disease. One possible mechanism for this process is that chronic stress causes endothelial injury, directly activating macrophages, promoting foam cell formation and generating the formation of atherosclerotic plaque. This mechanism involves numerous variables, including inflammation, signal pathways, lipid metabolism and endothelial function. The mechanism of chronic stress in atherosclerosis should be further investigated to provide a theoretical basis for efforts to eliminate the effect of chronic stress on the cardiocerebral vascular system.
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Affiliation(s)
- Bo-Chen Yao
- 1 Graduate College, Tianjin Medical University, Tianjin, China.,2 Department of Cardiac Surgery, Tianjin Chest Hospital, Tianjin, China
| | - Ling-Bing Meng
- 3 Neurology Department, Beijing Hospital, National Center of Gerontology, Dong Dan, Beijing, P. R. China
| | - Meng-Lei Hao
- 4 Department of geriatric medicine, Qinghai University, Xining, Qinghai, China
| | - Yuan-Meng Zhang
- 5 Internal medicine, Jinzhou Medical University, Linghe District, Jinzhou City, Liaoning Province, China
| | - Tao Gong
- 1 Graduate College, Tianjin Medical University, Tianjin, China
| | - Zhi-Gang Guo
- 2 Department of Cardiac Surgery, Tianjin Chest Hospital, Tianjin, China
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Meng LB, Shan MJ, Yu ZM, Lv J, Qi RM, Guo P, Zhang YM, Gong T. Chronic stress: a crucial promoter of cell apoptosis in atherosclerosis. J Int Med Res 2019; 48:300060518814606. [PMID: 30700193 PMCID: PMC7140195 DOI: 10.1177/0300060518814606] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Objective Chronic stress may lead to augmented incidence rates of coronary and
cerebrovascular diseases associated with atherosclerosis. However, few
studies have focused on the effect of chronic stress on atherosclerosis
plaque formation. Therefore, this study was designed to directly evaluate
how chronic stress affects atherosclerosis. Methods Thirty rabbits were divided into three groups: the control group,
balloon-injury operation + high-fat diet model group, and chronic
stress + balloon-injury operation + high-fat diet model group. Physical and
social stress were induced, and proteomic methods were applied to identify
specific markers. Results After protein determination, the chronic stress + balloon-injury
operation + high-fat diet model group exhibited significant upregulation of
the following apoptosis-related proteins: UBE2K, caspase 3, caspase 9, BAX,
P53, and FAS. In particular, real-time polymerase chain reaction showed that
the protein expression of caspase 9 was significantly downregulated in the
stress group compared with the non-stress groups. However, the other
proteins showed significantly increased expression in the stress group. Conclusion Chronic stress may promote cell apoptosis in the physiopathologic process of
atherosclerosis.
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Affiliation(s)
- Ling-Bing Meng
- Neurology Department, Beijing Hospital, National Center of Gerontology, Dong Dan, Beijing, China
| | - Meng-Jie Shan
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ze-Mou Yu
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Jian Lv
- Second Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Ruo-Mei Qi
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Dong Dan, Beijing, China
| | - Peng Guo
- Department of Orthopedics, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Yuan-Meng Zhang
- Internal Medicine Department, Jinzhou Medical University, Liaoning, China
| | - Tao Gong
- Neurology Department, Beijing Hospital, National Center of Gerontology, Dong Dan, Beijing, China
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Firoozmand LT, Sanches A, Damaceno-Rodrigues NR, Perez JD, Aragão DS, Rosa RM, Marcondes FK, Casarini DE, Caldini EG, Cunha TS. Blockade of AT1 type receptors for angiotensin II prevents cardiac microvascular fibrosis induced by chronic stress in Sprague-Dawley rats. Stress 2018; 21:484-493. [PMID: 29676198 DOI: 10.1080/10253890.2018.1462328] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
To test the effects of chronic-stress on the cardiovascular system, the model of chronic mild unpredictable stress (CMS) has been widely used. The CMS protocol consists of the random, intermittent, and unpredictable exposure of laboratory animals to a variety of stressors, during 3 consecutive weeks. In this study, we tested the hypothesis that exposure to the CMS protocol leads to left ventricle microcirculatory remodeling that can be attenuated by angiotensin II receptor blockade. Male Sprague-Dawley rats were randomly assigned into four groups: Control, Stress, Control + losartan, and Stress + losartan (N = 6, each group, losartan: 20 mg/kg/day). The rats were euthanized 15 days after CMS exposure, and blood samples and left ventricle were collected. Rats submitted to CMS presented increased glycemia, corticosterone, noradrenaline and adrenaline concentration, and losartan reduced the concentration of the circulating amines. Cardiac angiotensin II, measured by high-performance liquid chromatography (HPLC), was significantly increased in the CMS group, and losartan treatment reduced it, while angiotensin 1-7 was significantly higher in the CMS losartan-treated group as compared with CMS. Histological analysis, verified by transmission electron microscopy, showed that rats exposed to CMS presented increased perivascular collagen and losartan effectively prevented the development of this process. Hence, CMS induced a state of microvascular disease, with increased perivascular collagen deposition, that may be the trigger for further development of cardiovascular disease. In this case, CMS fibrosis is associated with increased production of catecholamines and with a disruption of renin-angiotensin system balance, which can be prevented by angiotensin II receptor blockade.
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Affiliation(s)
| | - Andrea Sanches
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas (FOP-UNICAMP), Piracicaba, Brazil
| | - Nilsa Regina Damaceno-Rodrigues
- Laboratory of Cell Biology (LIM59), Department of Pathology, School of Medicine, University of São Paulo (USP), São Paulo, Brazil
| | - Juliana Dinéia Perez
- Department of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | | | - Rodolfo Mattar Rosa
- Department of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - Fernanda Klein Marcondes
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas (FOP-UNICAMP), Piracicaba, Brazil
| | - Dulce Elena Casarini
- Department of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - Elia Garcia Caldini
- Laboratory of Cell Biology (LIM59), Department of Pathology, School of Medicine, University of São Paulo (USP), São Paulo, Brazil
| | - Tatiana Sousa Cunha
- Institute of Science and Technology, Department of Science and Technology, Federal University of São Paulo (UNIFESP), São José dos Campos, Brazil
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Demirtaş Şahin T, Yazir Y, Utkan T, Gacar G, Halbutoğulları ZS, Gocmez SS. Depression induced by chronic stress leads to penile cavernosal dysfunction: protective effect of anti-TNF-α treatment. Can J Physiol Pharmacol 2018; 96:933-942. [PMID: 30052465 DOI: 10.1139/cjpp-2017-0778] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Psychological stress may lead to erectile dysfunction (ED), and inflammation has been evaluated as a major contributing factor. The goal of this study was to investigate the effects of etanercept (ETN), an anti-tumor necrosis factor α (TNF-α) protein, on cavernosal function in the unpredictable chronic mild stress (UCMS) rat model of depression. Animals were divided into 4 groups: animals not exposed to UCMS, animals not exposed to UCMS and treated with ETN, animals exposed to UCMS, and animals treated with ETN while exposed to UCMS. UCMS significantly impaired the neurogenic and endothelium-dependent relaxation responses; reduced cavernosal endothelial nitric oxide (NO) synthase (eNOS) and neuronal NO synthase (nNOS) expressions; decreased testosterone levels; enhanced systemic levels of corticosterone, TNF-α, interleukin 1β (IL-1β), interleukin 6 (IL-6), monocyte chemoattractant protein-1 (MCP-1), and intercellular adhesion molecule 1 (ICAM-1); and also increased cavernosal levels of TNF-α, IL-1β, and IL-6 in rats. ETN administration restored NO-mediated neurogenic and endothelium-dependent relaxation responses of the corpus cavernosum, increased cavernosal eNOS and nNOS expressions, enhanced testosterone levels, and decreased corticosterone levels in UCMS-exposed rats. Also, systemic inflammatory markers and cavernosal proinflammatory cytokine levels were reduced by ETN. Our results demonstrate the role of TNF-α-mediated inflammation in the development of depression and ED in rats exposed to chronic stress.
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Affiliation(s)
- Tuğçe Demirtaş Şahin
- a Department of Pharmacology, Medical Faculty, Kocaeli University, Kocaeli, Turkey
| | - Yusufhan Yazir
- b Department of Histology and Embryology, Medical Faculty, Kocaeli University, Kocaeli, Turkey.,c Stem Cell and Gene Therapy Research and Application Center, Kocaeli University, Kocaeli, Turkey
| | - Tijen Utkan
- a Department of Pharmacology, Medical Faculty, Kocaeli University, Kocaeli, Turkey
| | - Gulcin Gacar
- c Stem Cell and Gene Therapy Research and Application Center, Kocaeli University, Kocaeli, Turkey
| | | | - Semil Selcen Gocmez
- a Department of Pharmacology, Medical Faculty, Kocaeli University, Kocaeli, Turkey
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Yazir Y, Demirtaş Şahin T, Furat Rençber S, Gacar G, Halbutoğulları ZS, Utkan T, Aricioglu F. Restorative effect of resveratrol on expression of endothelial and neuronal nitric oxide synthase in cavernous tissues of chronic unpredictable mild stress-exposed rats: an impact of inflammation. Int J Impot Res 2018; 30:318-326. [DOI: 10.1038/s41443-018-0048-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/24/2018] [Accepted: 05/26/2018] [Indexed: 11/09/2022]
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Guzzoni V, Cunha TS, das Neves VJ, Briet L, Costa R, Moura MJCS, Oliveira V, Franco MDCP, Novaes PD, Marcondes FK. Nandrolone combined with strenuous resistance training reduces vascular nitric oxide bioavailability and impairs endothelium-dependent vasodilation. Steroids 2018; 131:7-13. [PMID: 29317256 DOI: 10.1016/j.steroids.2017.12.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 12/11/2017] [Accepted: 12/20/2017] [Indexed: 01/04/2023]
Abstract
Anabolic Androgenic Steroids (AASs) misuse has increased among adolescents and recreational athletes due to their potential effects on muscle hypertrophy. On the other hand, AAS might induce alterations on cardiovascular system, although some controversies regarding AAS on vascular properties remain unknown. To address this question, we aimed to investigate the effects of high doses of nandrolone combined with strenuous resistance training (RT) on function and structure of thoracic aorta. Rats were randomized into four groups: non-trained vehicle (NTV), trained vehicle (TV), non-trained nandrolone (NTN), and trained nandrolone (TN), and submitted to 6 weeks of treatment with nandrolone (5 mg/kg, twice a week) and/or resistance training. In vitro response of thoracic aorta to acetylcholine (ACh) was analyzed. Vascular nitric oxide (NO) and reactive oxygen species (ROS) synthesis were evaluated using 4,5-diaminofluorescein diacetate (DAF-2) and hydroethidine fluorescent techniques, respectively. Thoracic aorta was processed for microscopy analyses and tunica media thickness was measured. ACh-mediated relaxation response was impaired in endothelium intact aortic rings isolated from trained rats (TV and TN) as compared with their matched non-trained groups. TN rats showed reduced ACh-mediated vasodilatation than NTN rats. NO production and bioavailability decreased in thoracic aorta of nandrolone-treated rats in relation to their matched non-trained group (NTN vs. NTV; TN vs. TV). ROS production and tunica media thickness were increased in TN rats when compared with TV rats. These findings indicate that high doses of nandrolone combined with strenuous RT affect NO bioavailability and might induce endothelial dysfunction and arterial morphological alterations.
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Affiliation(s)
- Vinicius Guzzoni
- Department of Oral Physiology, Piracicaba Dental School, University of Campinas - FOP/UNICAMP, Piracicaba, SP, Brazil
| | - Tatiana Sousa Cunha
- Science and Technology Institute, Federal University of São Paulo, São José dos Campos, Brazil
| | - Vander José das Neves
- Department of Oral Physiology, Piracicaba Dental School, University of Campinas - FOP/UNICAMP, Piracicaba, SP, Brazil
| | - Larissa Briet
- Department of Oral Physiology, Piracicaba Dental School, University of Campinas - FOP/UNICAMP, Piracicaba, SP, Brazil
| | - Rafaela Costa
- Department of Oral Physiology, Piracicaba Dental School, University of Campinas - FOP/UNICAMP, Piracicaba, SP, Brazil
| | | | - Vanessa Oliveira
- Nephrology Division, School of Medicine, Federal University of São Paulo, São Paulo, Brazil
| | | | - Pedro Duarte Novaes
- Department of Oral Physiology, Piracicaba Dental School, University of Campinas - FOP/UNICAMP, Piracicaba, SP, Brazil
| | - Fernanda Klein Marcondes
- Department of Oral Physiology, Piracicaba Dental School, University of Campinas - FOP/UNICAMP, Piracicaba, SP, Brazil.
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NO Signaling in the Cardiovascular System and Exercise. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1000:211-245. [DOI: 10.1007/978-981-10-4304-8_13] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Puzserova A, Bernatova I. Blood pressure regulation in stress: focus on nitric oxide-dependent mechanisms. Physiol Res 2017; 65:S309-S342. [PMID: 27775419 DOI: 10.33549/physiolres.933442] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Stress is considered a risk factor associated with the development of various civilization diseases including cardiovascular diseases, malignant tumors and mental disorders. Research investigating mechanisms involved in stress-induced hypertension have attracted much attention of physicians and researchers, however, there are still ambiguous results concerning a causal relationship between stress and long-term elevation of blood pressure (BP). Several studies have observed that mechanisms involved in the development of stress-induced hypertension include increased activity of sympathetic nervous system (SNS), glucocorticoid (GC) overload and altered endothelial function including decreased nitric oxide (NO) bioavailability. Nitric oxide is well known neurotransmitter, neuromodulator and vasodilator involved in regulation of neuroendocrine mechanisms and cardiovascular responses to stressors. Thus NO plays a crucial role in the regulation of the stress systems and thereby in the BP regulation in stress. Elevated NO synthesis, especially in the initial phase of stress, may be considered a stress-limiting mechanism, facilitating the recovery from stress to the resting levels via attenuation of both GC release and SNS activity as well as by increased NO-dependent vasorelaxation. On the other hand, reduced levels of NO were observed in the later phases of stress and in subjects with genetic predisposition to hypertension, irrespectively, in which reduced NO bioavailability may account for disruption of NO-mediated BP regulatory mechanisms and accentuated SNS and GC effects. This review summarizes current knowledge on the role of stress in development of hypertension with a special focus on the interactions among NO and other biological systems affecting blood pressure and vascular function.
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Affiliation(s)
- A Puzserova
- Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Bratislava, Slovak Republic.
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Penile constitutive nitric oxide synthase expression in rats exposed to unpredictable chronic mild stress: role of inflammation. Int J Impot Res 2016; 29:76-81. [DOI: 10.1038/ijir.2016.50] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 09/04/2016] [Accepted: 10/28/2016] [Indexed: 11/08/2022]
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Costa-Ferreira W, Vieira JO, Almeida J, Gomes-de-Souza L, Crestani CC. Involvement of Type 1 Angiontensin II Receptor (AT1) in Cardiovascular Changes Induced by Chronic Emotional Stress: Comparison between Homotypic and Heterotypic Stressors. Front Pharmacol 2016; 7:262. [PMID: 27588004 PMCID: PMC4988975 DOI: 10.3389/fphar.2016.00262] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 08/04/2016] [Indexed: 01/26/2023] Open
Abstract
Consistent evidence has shown an important role of emotional stress in pathogenesis of cardiovascular diseases. Additionally, studies in animal models have demonstrated that daily exposure to different stressor (heterotypic stressor) evokes more severe changes than those resulting from repeated exposure to the same aversive stimulus (homotypic stressor), possibly due to the habituation process upon repeated exposure to the same stressor. Despite these pieces of evidence, the mechanisms involved in the stress-evoked cardiovascular dysfunction are poorly understood. Therefore, the present study investigated the involvement of angiotensin II (Ang II) acting on the type 1 Ang II receptor (AT1) in the cardiovascular dysfunctions evoked by both homotypic and heterotypic chronic emotional stresses in rats. For this purpose, we compared the effect of the chronic treatment with the AT1 receptor antagonist losartan (30 mg/kg/day, p.o.) on the cardiovascular and autonomic changes evoked by the heterotypic stressor chronic variable stress (CVS) and the homotypic stressor repeated restraint stress (RRS). RRS increased the sympathetic tone to the heart and decreased the cardiac parasympathetic activity, whereas CVS decreased the cardiac parasympathetic activity. Additionally, both stressors impaired the baroreflex function. Alterations in the autonomic activity and the baroreflex impairment were inhibited by losartan treatment. Additionally, CVS reduced the body weight and increased the circulating corticosterone; however, these effects were not affected by losartan. In conclusion, these findings indicate the involvement of angiotensin II/AT1 receptors in the autonomic changes evoked by both homotypic and heterotypic chronic stressors. Moreover, the present results provide evidence that the increase in the circulating corticosterone and body weight reduction evoked by heterotypic stressors are independent of AT1 receptors.
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Affiliation(s)
- Willian Costa-Ferreira
- Faculdade de Ciências Farmacêuticas, UNESP-Universidade Estadual PaulistaAraraquara, Brazil; Joint UFSCar-UNESP Graduate Program in Physiological Sciences, UFSCar-UNESPSão Carlos, Brazil
| | - Jonas O Vieira
- Faculdade de Ciências Farmacêuticas, UNESP-Universidade Estadual PaulistaAraraquara, Brazil; Joint UFSCar-UNESP Graduate Program in Physiological Sciences, UFSCar-UNESPSão Carlos, Brazil
| | - Jeferson Almeida
- Faculdade de Ciências Farmacêuticas, UNESP-Universidade Estadual PaulistaAraraquara, Brazil; Joint UFSCar-UNESP Graduate Program in Physiological Sciences, UFSCar-UNESPSão Carlos, Brazil
| | - Lucas Gomes-de-Souza
- Faculdade de Ciências Farmacêuticas, UNESP-Universidade Estadual PaulistaAraraquara, Brazil; Joint UFSCar-UNESP Graduate Program in Physiological Sciences, UFSCar-UNESPSão Carlos, Brazil
| | - Carlos C Crestani
- Faculdade de Ciências Farmacêuticas, UNESP-Universidade Estadual PaulistaAraraquara, Brazil; Joint UFSCar-UNESP Graduate Program in Physiological Sciences, UFSCar-UNESPSão Carlos, Brazil
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Sanches A, Costa R, Marcondes FK, Cunha TS. Relationship among stress, depression, cardiovascular and metabolic changes and physical exercise. FISIOTERAPIA EM MOVIMENTO 2016. [DOI: 10.1590/0103-5150.029.001.ao02] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstract Introduction: Stress is considered one of the most significant health problems in modern society. It can be characterized as any changes in the homeostasis of an individual that require an adaptive response. An imbalance in the secretion of the primary stress mediators may be responsible for the onset and development of several diseases. Thus, chronic stress has been recognized as a risk factor for depression as well as cardiovascular and metabolic diseases. Given the pathophysiological mechanisms associated with chronic stress and related cardiovascular and metabolic changes, it is necessary to implement measures to prevent, control and/or avoid their development. Physical exercise is a non-pharmacological resource that is widely used for this purpose. Its beneficial effects include the improvement of the emotional state as well as lipid and glycemic control. Objective: The aim of this review is to discuss the relationship between stress, depression, cardiovascular and metabolic changes, and highlight the importance of physical exercise in the prevention and treatment of resulting disorders. Materials and Methods: We searched MEDLINE and SCIELO from 2000 through 2012, using the terms chronic stress, mood disorders, depression, cardiovascular and metabolic changes, and exercise. Results: Most of the studies found in our literature search have shown that exercise can attenuate and/or reverse the deleterious effects of chronic stress. Conclusion: Regular physical exercise is useful for maintaining health, especially with respect to improving mood and mental stress.
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Affiliation(s)
| | - Rafaela Costa
- Universidade Estadual de Campinas, Brazil; Universidade Estadual de Campinas, Brazil
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Role of peripheral vascular resistance for the association between major depression and cardiovascular disease. J Cardiovasc Pharmacol 2016; 65:299-307. [PMID: 25469807 PMCID: PMC4415957 DOI: 10.1097/fjc.0000000000000187] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Major depression and cardiovascular diseases are 2 of the most prevalent health problems in Western society, and an association between them is generally accepted. Although the specific mechanism behind this comorbidity remains to be elucidated, it is clear that it has a complex multifactorial character including a number of neuronal, humoral, immune, and circulatory pathways. Depression-associated cardiovascular abnormalities associate with cardiac dysfunctions and with changes in peripheral resistance. Although cardiac dysfunction in association with depression has been studied in detail, little attention was given to structural and functional changes in resistance arteries responsible for blood pressure control and tissue perfusion. This review discusses recent achievements in studies of depression-associated abnormalities in resistance arteries in humans and animal experimental models. The changes in arterial structure, contractile and relaxing functions associated with depression symptoms are discussed, and the role of these abnormalities for the pathology of major depression and cardiovascular diseases are suggested.
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Golbidi S, Frisbee JC, Laher I. Chronic stress impacts the cardiovascular system: animal models and clinical outcomes. Am J Physiol Heart Circ Physiol 2015; 308:H1476-98. [DOI: 10.1152/ajpheart.00859.2014] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 04/03/2015] [Indexed: 01/01/2023]
Abstract
Psychological stresses are associated with cardiovascular diseases to the extent that cardiovascular diseases are among the most important group of psychosomatic diseases. The longstanding association between stress and cardiovascular disease exists despite a large ambiguity about the underlying mechanisms. An array of possibilities have been proposed including overactivity of the autonomic nervous system and humoral changes, which then converge on endothelial dysfunction that initiates unwanted cardiovascular consequences. We review some of the features of the two most important stress-activated systems, i.e., the humoral and nervous systems, and focus on alterations in endothelial function that could ensue as a result of these changes. Cardiac and hematologic consequences of stress are also addressed briefly. It is likely that activation of the inflammatory cascade in association with oxidative imbalance represents key pathophysiological components of stress-induced cardiovascular changes. We also review some of the commonly used animal models of stress and discuss the cardiovascular outcomes reported in these models of stress. The unique ability of animals for adaptation under stressful conditions lessens the extrapolation of laboratory findings to conditions of human stress. An animal model of unpredictable chronic stress, which applies various stress modules in a random fashion, might be a useful solution to this predicament. The use of stress markers as indicators of stress intensity is also discussed in various models of animal stress and in clinical studies.
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Affiliation(s)
- Saeid Golbidi
- Department of Pharmacology and Therapeutics, Faculty of Medicine, University of British Columbia, Vancouver, Canada; and
| | - Jefferson C. Frisbee
- Center for Cardiovascular and Respiratory Sciences, West Virginia University Health Sciences Center, Morgantown, West Virginia
| | - Ismail Laher
- Department of Pharmacology and Therapeutics, Faculty of Medicine, University of British Columbia, Vancouver, Canada; and
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Abstract
OBJECTIVE This study investigated the physiological and somatic changes evoked by daily exposure to the same type of stressor (homotypic) or different aversive stressor stimuli (heterotypic) in adolescent and adult rats, with a focus on cardiovascular function. The long-term effects of stress exposure during adolescence were also investigated longitudinally. METHODS Male Wistar rats were exposed to repeated restraint stress (RRS, homotypic) or chronic variable stress (CVS, heterotypic). RESULTS Adrenal hypertrophy, thymus involution, and elevated plasma glucocorticoid were observed only in adolescent animals, whereas reduction in body weight was caused by both stress regimens in adults. CVS increased mean arterial pressure (adolescent: p = .001; adult: p = .005) and heart rate (HR; adolescent: p = .020; adult: p = .011) regardless of the age, whereas RRS increased blood pressure selectively in adults (p = .001). Rest tachycardia evoked by CVS was associated with increased cardiac sympathetic activity in adults, whereas a decreased cardiac parasympathetic activity was observed in adolescent animals. Changes in cardiovascular function and cardiac autonomic activity evoked by both CVS and RRS were followed by alterations in baroreflex activity and vascular reactivity to vasoconstrictor and vasodilator agents in adolescent adult animals. Except for the circulating glucocorticoid change, all alterations observed during adolescence were reversed in adulthood. CONCLUSIONS These findings suggest a stress vulnerability of adolescents to somatic and neuroendocrine effects regardless of stress regimen. Our results indicated an age-stress type-specific influence in stress-evoked cardiovascular/autonomic changes. Data suggest minimal consequences in adulthood of stress during adolescence.
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Carda APP, Marchi KC, Rizzi E, Mecawi AS, Antunes-Rodrigues J, Padovan CM, Tirapelli CR. Acute restraint stress induces endothelial dysfunction: role of vasoconstrictor prostanoids and oxidative stress. Stress 2015; 18:233-43. [PMID: 25689973 DOI: 10.3109/10253890.2015.1014790] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
We hypothesized that acute stress would induce endothelial dysfunction. Male Wistar rats were restrained for 2 h within wire mesh. Functional and biochemical analyses were conducted 24 h after the 2-h period of restraint. Stressed rats showed decreased exploration on the open arms of an elevated-plus maze (EPM) and increased plasma corticosterone concentration. Acute restraint stress did not alter systolic blood pressure, whereas it increased the in vitro contractile response to phenylephrine and serotonin in endothelium-intact rat aortas. NG-nitro-l-arginine methyl ester (l-NAME; nitric oxide synthase, NOS, inhibitor) did not alter the contraction induced by phenylephrine in aortic rings from stressed rats. Tiron, indomethacin and SQ29548 reversed the increase in the contractile response to phenylephrine induced by restraint stress. Increased systemic and vascular oxidative stress was evident in stressed rats. Restraint stress decreased plasma and vascular nitrate/nitrite (NOx) concentration and increased aortic expression of inducible (i) NOS, but not endothelial (e) NOS. Reduced expression of cyclooxygenase (COX)-1, but not COX-2, was observed in aortas from stressed rats. Restraint stress increased thromboxane (TX)B(2) (stable TXA(2) metabolite) concentration but did not affect prostaglandin (PG)F2α concentration in the aorta. Restraint reduced superoxide dismutase (SOD) activity, whereas concentrations of hydrogen peroxide (H(2)O(2)) and reduced glutathione (GSH) were not affected. The major new finding of our study is that restraint stress increases vascular contraction by an endothelium-dependent mechanism that involves increased oxidative stress and the generation of COX-derived vasoconstrictor prostanoids. Such stress-induced endothelial dysfunction could predispose to the development of cardiovascular diseases.
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MESH Headings
- 1,2-Dihydroxybenzene-3,5-Disulfonic Acid Disodium Salt/pharmacology
- Animals
- Aorta/drug effects
- Aorta/metabolism
- Aorta/physiopathology
- Blood Pressure/drug effects
- Bridged Bicyclo Compounds, Heterocyclic
- Cyclooxygenase 1/metabolism
- Cyclooxygenase 2/metabolism
- Cyclooxygenase Inhibitors/pharmacology
- Dinoprost/metabolism
- Endothelium, Vascular/metabolism
- Endothelium, Vascular/physiopathology
- Fatty Acids, Unsaturated
- Glutathione/metabolism
- Hydrazines/pharmacology
- Hydrogen Peroxide/metabolism
- Indomethacin/pharmacology
- Male
- Membrane Proteins/metabolism
- NG-Nitroarginine Methyl Ester/pharmacology
- Nitric Oxide Synthase/metabolism
- Oxidative Stress/drug effects
- Oxidative Stress/physiology
- Phenylephrine/pharmacology
- Prostaglandins
- Rats
- Rats, Wistar
- Restraint, Physical
- Serotonin/pharmacology
- Stress, Psychological/metabolism
- Stress, Psychological/physiopathology
- Thiobarbituric Acid Reactive Substances/metabolism
- Thromboxane B2/metabolism
- Vasoconstrictor Agents/pharmacology
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Affiliation(s)
- Ana P P Carda
- Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo (USP) , Ribeirão Preto, São Paulo , Brazil
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Neves VJD, Fernandes T, Roque FR, Soci UPR, Melo SFS, Oliveira EMD. Exercise training in hypertension: Role of microRNAs. World J Cardiol 2014; 6:713-727. [PMID: 25228951 PMCID: PMC4163701 DOI: 10.4330/wjc.v6.i8.713] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2013] [Revised: 03/25/2014] [Accepted: 05/29/2014] [Indexed: 02/06/2023] Open
Abstract
Hypertension is a complex disease that constitutes an important public health problem and demands many studies in order to understand the molecular mechanisms involving his pathophysiology. Therefore, an increasing number of studies have been conducted and new therapies are continually being discovered. In this context, exercise training has emerged as an important non-pharmacological therapy to treat hypertensive patients, minimizing the side effects of pharmacological therapies and frequently contributing to allow pharmacotherapy to be suspended. Several mechanisms have been associated with the pathogenesis of hypertension, such as hyperactivity of the sympathetic nervous system and renin-angiotensin aldosterone system, impaired endothelial nitric oxide production, increased oxygen-reactive species, vascular thickening and stiffening, cardiac hypertrophy, impaired angiogenesis, and sometimes genetic predisposition. With the advent of microRNAs (miRNAs), new insights have been added to the perspectives for the treatment of this disease, and exercise training has been shown to be able to modulate the miRNAs associated with it. Elucidation of the relationship between exercise training and miRNAs in the pathogenesis of hypertension is fundamental in order to understand how exercise modulates the cardiovascular system at genetic level. This can be promising even for the development of new drugs. This article is a review of how exercise training acts on hypertension by means of specific miRNAs in the heart, vascular system, and skeletal muscle.
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Association between endothelial dysfunction and depression-like symptoms in chronic mild stress model of depression. Psychosom Med 2014; 76:268-76. [PMID: 24804883 DOI: 10.1097/psy.0000000000000062] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVE Cardiovascular diseases have high comorbidity with major depression. Endothelial dysfunction may explain the adverse cardiovascular outcome in depression; therefore, we analyzed it in vitro. In the chronic mild stress model, some rats develop depression-like symptoms (including "anhedonia"), whereas others are stress resilient. METHODS After 8 weeks of chronic mild stress, anhedonic rats reduced their sucrose intake by 55% (7%), whereas resilient rats did not. Acetylcholine-induced endothelium-dependent relaxation of norepinephrine-preconstricted mesenteric arteries was analyzed in nonstressed, anhedonic, and resilient rat groups. RESULTS Small resistance arteries from anhedonic rats were less sensitive to acetylcholine than those of the nonstressed and resilient groups (p = .029). Pathways of endothelium-dependent relaxation were altered in arteries from anhedonic rats. Nitric oxide (NO)-dependent relaxation and endothelial NO synthase expression were increased in arteries from anhedonic rats (0.235 [0.039] arbitrary units and 155.7% [8.15%]) compared with the nonstressed (0.135 [0.012] arbitrary units and 100.0% [8.08%]) and resilient (0.152 [0.018] arbitrary units and 108.1% [11.65%]) groups (p < .001 and p = .002, respectively). Inhibition of cyclooxygenase (COX) activity revealed increased COX-2-dependent relaxation in the anhedonic group. In contrast, endothelial NO synthase- and COX-independent relaxation to acetylcholine (endothelium-dependent hyperpolarization-like response) was reduced in anhedonic rats (p < .001). This was associated with decreased transcription of intermediate-conductance Ca-activated K channels. CONCLUSIONS Our findings demonstrate that depression-like symptoms are associated with reduced endothelium-dependent relaxation due to suppressed endothelium-dependent hyperpolarization-like relaxation despite up-regulation of the NO and COX-2-dependent pathways in rat mesenteric arteries. These changes could affect peripheral resistance and organ perfusion in major depression.
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31
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Psychological stress, vascular inflammation, and atherogenesis: potential roles of circulating cytokines. J Cardiovasc Pharmacol 2013; 62:6-12. [PMID: 23318990 DOI: 10.1097/fjc.0b013e3182858fac] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Cardiovascular disease is a major cause of morbidity and mortality worldwide. Epidemiological studies have clearly demonstrated that chronic psychosocial stress increases the risk of atherosclerotic cardiovascular disease and this may involve multiple mediators and regulating pathways, whereas the precise mechanisms underlying the effects of stress on development of atherosclerosis are not completely understood. In this mini review, we summarize current information from various animal studies suggesting that stress may promote atherogenesis by stimulating vascular inflammation via elevating the level of circulating proinflammatory cytokines (such as tumor necrosis factor α and interleukin 6). Although circulating cytokines can serve as reliable biomarkers of systemic inflammation, in light of the emerging evidence, we propose that these molecules may also have a causal role in mediating stress-triggered vascular inflammatory reaction and atherogenesis. Further studies are warranted to clarify whether targeting circulating cytokines may be an effective approach to reduce the detrimental effects of chronic stress.
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Bayramgurler D, Karson A, Yazir Y, Celikyurt IK, Kurnaz S, Utkan T. The effect of etanercept on aortic nitric oxide-dependent vasorelaxation in an unpredictable chronic, mild stress model of depression in rats. Eur J Pharmacol 2013; 710:67-72. [PMID: 23603524 DOI: 10.1016/j.ejphar.2013.04.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 03/30/2013] [Accepted: 04/03/2013] [Indexed: 12/31/2022]
Abstract
Stress has been recognized as a risk factor for cardiovascular disease and depression, but the correlation is not well understood. However, inflammation is known to have a crucial role in both cardiovascular disease and depression. Tumor necrosis factor alpha (TNF-α) is a major cytokine for the activation of neuroendocrine, immune and behavioral responses. Therefore, we aimed to explore the effects of etanercept, an anti-TNF-α fusion protein, on endothelium-dependent vascular reactivity, blood pressure and endothelial nitric oxide synthase (eNOS) immunoreactivity in a model of unpredictable chronic mild stress (UCMS). Male rats were exposed to UCMS for 8 weeks, and etanercept (0.8 mg/kg, weekly) was administered during UCMS induction. The systolic blood pressure was recorded by the tail cuff method, and the relaxant responses of the aorta induced by carbachol, sodium nitroprusside (SNP) and papaverine were evaluated in an isolated organ bath system. UCMS rats exhibited an impaired carbachol-induced relaxant response compared to control rats, but there were no significant differences in the SNP- and papaverine-induced relaxant responses between the control and stressed rats. Etanercept treatment improved the carbachol-induced endothelium dependent relaxations observed in rats that experienced UCMS. No significant change in the systemic blood pressure was observed, but decreased expression of eNOS was detected in the UCMS group. Moreover, there were no significant changes in the etanercept treatment group compared to the control rats. Our results suggest that TNF-α could be a mediator of vascular dysfunction associated with UCMS, which leads to decreased expression of eNOS.
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Affiliation(s)
- Dilek Bayramgurler
- Department of Dermatology, Kocaeli University, Medical Faculty, 41380, Kocaeli, Turkey.
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33
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Zeeni N, Daher C, Fromentin G, Tome D, Darcel N, Chaumontet C. A cafeteria diet modifies the response to chronic variable stress in rats. Stress 2013; 16:211-9. [PMID: 22775984 DOI: 10.3109/10253890.2012.708952] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Stress is known to lead to metabolic and behavioral changes. To study the possible relationships between stress and dietary intake, male Sprague-Dawley rats were fed one of three diets for 6 weeks: high carbohydrate (HC), high fat (HF), or "Cafeteria" (CAF) (Standard HC plus a choice of highly palatable cafeteria foods: chocolate, biscuits, and peanut butter). After the first 3 weeks, half of the animals from each group (experimental groups) were stressed daily using a chronic variable stress (CVS) paradigm, while the other half of the animals (control groups) were kept undisturbed. Rats were sacrificed at the end of the 6-week period. The effects of stress and dietary intake on animal adiposity, serum lipids, and corticosterone were analyzed. Results showed that both chronic stress and CAF diet resulted in elevated total cholesterol, increased low-density lipoprotein (LDL), and lower high-density lipoprotein (HDL). In addition, increases in body weight, food intake, and intra-abdominal fat were observed in the CAF group compared with the other dietary groups. In addition, there was a significant interaction between stress and diet on serum corticosterone levels, which manifest as an increase in corticosterone levels in stressed rats relative to non-stressed controls in the HC and HF groups but not in the CAF group. These results show that a highly palatable diet, offering a choice of food items, is associated with a reduction in the response to CVS and could validate a stressor-induced preference for comfort food that in turn could increase body weight.
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Affiliation(s)
- N Zeeni
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, P.O. Box 36, Byblos, Lebanon.
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34
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Devaki M, Nirupama R, Yajurvedi HN. Chronic stress-induced oxidative damage and hyperlipidemia are accompanied by atherosclerotic development in rats. Stress 2013; 16:233-43. [PMID: 22894170 DOI: 10.3109/10253890.2012.719052] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Although stress-induced hyperlipidemia and increased oxidative stress have been reported and implicated in etiology of atherosclerosis, experimental evidence for stress-induced atherosclerotic development concomitant with these alterations is lacking. In this study, exposure of adult male albino Wistar rats (Rattus norvegicus) to restraint for 1 h and after a gap of 4 h to forced swimming for 15 min every day for 2, 4, or 24 weeks resulted in a duration of exposure-dependent hyperlipidemia as shown by significant increases in concentrations of blood cholesterol, low-density lipoproteins, and triglycerides and decrease in high-density lipoprotein concomitant with increased oxidative stress as indicated by decrease in hepatic antioxidant enzyme activities and increase in lipid peroxidation in the liver, kidney, and heart. These alterations were accompanied by development of fibrous layer, formation of foam cells, reduction in elastic fibers, and accumulation of Oil-Red-O-positive lipid droplets in the intima of thoracic aorta following 24 weeks of stress exposure, but not after 4 weeks. The study demonstrates for the first time that (i) chronic stress-induced hyperlipidemia and oxidative damage are coupled with atherosclerotic development in rats fed with normal diet and (ii) chronic stress effects prevail even after the cessation of stress exposure as indicated by high concentration of blood cholesterol and reduced hepatic superoxide dismutase activity 20 weeks after 2 or 4 weeks of stress. This study exemplifies long-term allostatic regulation leading to a pathological state, with long-term hyperlipidemia and oxidative damage from chronic stress resulting in atherosclerosis.
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Affiliation(s)
- M Devaki
- Department of Zoology, University of Mysore, Manasagangotri, Mysore, India
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35
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Lu XT, Liu YF, Zhao L, Li WJ, Yang RX, Yan FF, Zhao YX, Jiang F. Chronic psychological stress induces vascular inflammation in rabbits. Stress 2013; 16:87-98. [PMID: 22428781 DOI: 10.3109/10253890.2012.676696] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Psychological stress is associated with a systemic inflammatory response. It is unclear, however, whether psychological stress contributes to vascular inflammation. Here, we examined the effects of unpredictable chronic mild stress (UCMS) on vascular inflammation in rabbits. One hundred rabbits were randomly divided into control and stress groups. UCMS was induced by a set of defined adverse conditions applied in a shuffled order for 4, 8, 12, or 16 weeks, and rabbits were killed 24 h after the end of the UCMS protocol. Expression of different inflammatory molecules was analyzed by real-time polymerase chain reaction, immunohistochemistry, or enzyme-linked immunosorbent assay. UCMS resulted in depression-like behaviors, decreased body weight gain, and hypertension with no significant effects on serum lipids. Aortic mRNA and protein expression for tumor necrosis factor-α (TNF-α), C-reactive protein (CRP), monocyte chemoattractant protein-1 (MCP-1), macrophage migration inhibitory factor, and expression of intercellular adhesion molecule-1 (ICAM-1) protein were increased. UCMS increased circulating concentrations of corticosterone, TNF-α, and CRP throughout. Moreover, stress downregulated the expression of endothelial nitric oxide synthase. At 16 weeks of UCMS, macrophage infiltration and lipid accumulation in the subendothelial space were detected in the aorta. In cultured murine vascular smooth muscle cells, treatment with serum from stressed rabbits significantly increased phosphorylation of p38 and c-Jun N-terminal kinase (JNK), and upregulated expression of MCP-1 and ICAM-1 mRNAs, in which the effect was blunted by a TNF-α neutralizing antibody or p38 and JNK inhibitors. Our results indicate that chronic psychological stress induces vascular inflammation via TNF-α and p38/JNK pathways, which may contribute to the development of atherosclerosis.
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Affiliation(s)
- Xiao Ting Lu
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan, Shandong Province, PR China
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36
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Neves VJ, Moura MJCS, Almeida BS, Costa R, Sanches A, Ferreira R, Tamascia ML, Romani EAO, Novaes PD, Marcondes FK. Chronic stress, but not hypercaloric diet, impairs vascular function in rats. Stress 2012; 15:138-48. [PMID: 21801080 DOI: 10.3109/10253890.2011.601369] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The aim of this study was to evaluate vascular and metabolic effects of chronic mild unpredictable stress (CMS) and hypercaloric diet (HD) without carbohydrate supplementation in rats. Male Sprague-Dawley rats were randomly assigned to four groups: Control, HD, CMS, and HD plus CMS. CMS consisted of the application of different stressors for 3 weeks. The rats were killed 15 days after CMS exposure. The HD group presented higher plasma lipid concentrations, without changes in fasting glucose concentration, glucose tolerance test, and vascular function and morphology, in comparison with the control group. Stressed rats presented higher fasting blood concentration of insulin, higher homeostasis model assessment index values and area under the curve in an oral glucose tolerance test, in comparison with non-stressed rats. CMS increased the plasma concentrations of corticosterone and lipids, and the atherogenic index values, without change in high-density lipoprotein level. CMS increased intima-media thickness and induced endothelium-dependent supersensitivity to phenylephrine, and lowered the relaxation response to acetylcholine in the thoracic aorta isolated from rats fed with control or HD, in comparison with non-stressed groups. CMS effects were independent of diet. In non-stressed rats, the HD induced dyslipidemia, but did not change glucose metabolism, vascular function, or morphology. The data from this study indicate that CMS promotes a set of events which together can contribute to impair function of the thoracic aorta.
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Affiliation(s)
- V J Neves
- Laboratory of Stress, Department of Physiological Sciences, Piracicaba Dental School, University of Campinas, Piracicaba, Sao Paulo, Brazil
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37
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Age-related changes in endothelial function and blood flow regulation. Pharmacol Ther 2012; 133:159-76. [DOI: 10.1016/j.pharmthera.2011.10.004] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Accepted: 10/14/2011] [Indexed: 01/12/2023]
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Fluoxetine effect on aortic nitric oxide-dependent vasorelaxation in the unpredictable chronic mild stress model of depression in mice. Psychosom Med 2012; 74:63-72. [PMID: 22210237 DOI: 10.1097/psy.0b013e31823a43e0] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
OBJECTIVE Major depression is an independent risk factor for the development of cardiovascular diseases. However, the exact mechanism by which depression may induce cardiovascular events is unclear. Endothelial dysfunction has been reported as a possible link between depression and subsequent cardiovascular events as described in depressed subjects. The purpose of this study was to investigate endothelial dysfunction and atherosclerosis formation in the aorta of mice exposed to the unpredictable chronic mild stress (UCMS) procedure. METHODS BALB/c mice were exposed to two 7-week UCMS procedures separated by 6 weeks. Treatments (fluoxetine 10 mg/kg; NaCl 0.9%) started at the third week until the end of the seventh week of each procedure. Endothelial function was evaluated by in vitro assessment of acetylcholine-induced vasorelaxation in aortic rings. By using specific inhibitors for nitric oxide (NO)- and prostacyclin-dependent relaxation, we assessed the part played by NO, prostacyclin, and endothelium-derived hyperpolarizing factor (EDHF)-like mediators in endothelium-dependent relaxation. Atherosclerosis was evaluated by histological examination. RESULTS Depression-like behavior was increased in the UCMS versus unstressed group and was reversed by chronic fluoxetine treatment. Vascular reactivity study indicated that UCMS induced a decrease in the NO-dependent relaxation that was partially compensated by an EDHF-like dependent relaxation. Because fluoxetine per se increased the NO-dependent relaxation, fluoxetine was able to reverse UCMS effect on the NO component and abolished the EDHF-like component. Atherosclerotic lesion was found in aorta of UCMS and nonstressed animals. CONCLUSIONS As an independent risk factor, UCMS reproduced the endothelial alterations observed in depression but was not sufficient to provoke morphological alterations.
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Toda N, Nakanishi-Toda M. How mental stress affects endothelial function. Pflugers Arch 2011; 462:779-94. [PMID: 21947555 DOI: 10.1007/s00424-011-1022-6] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Revised: 08/22/2011] [Accepted: 08/24/2011] [Indexed: 01/23/2023]
Abstract
Mental stress is an important factor contributing to recognized mechanisms underlying cardiovascular events. Among these, stress-related endothelial dysfunction is an early risk factor that predicts future development of severe cardiovascular disorders. Acute mental stress by a variety of tests impairs endothelial function in humans, although the opposite results have been reported by some investigators. Chronic stress always deteriorates endothelial function in humans and experimental animals. Stress hormones, such as glucocorticoids and pro-inflammatory cytokines, and endothelin-1 liberated in response to mental stress participate in endothelial dysfunction possibly via downregulation of endothelial nitric oxide synthase (eNOS) expression, eNOS inactivation, decreased nitric oxide (NO) actions, and increased NO degradation, together with vasoconstriction counteracting against NO-induced vasodilatation. Catecholamines do not directly affect endothelial function but impair its function when blood pressure elevation by the amines is sustained. Endogenous opioids favorably affect endothelial function, which counteract deteriorating effects of other stress hormones and mediators. Inhibition of cortisol and endothelin-1 production, prevention of pro-inflammatory mediator accumulation, hypnotics, mirthful laughter, humor orientation, and lifestyle modification would contribute to the prevention and treatment for stress-related endothelial dysfunction and future serious cardiovascular disease.
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Affiliation(s)
- Noboru Toda
- Toyama Institute for Cardiovascular Pharmacology Research, 7-13, 1-Chome, Azuchi-machi, Chuo-ku, Osaka 541-0052, Japan.
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Hasan S, Bilal N, Naqvi S, Ashraf GM, Suhail N, Sharma S, Banu N. Multivitamin-mineral and vitamins (E + C) supplementation modulate chronic unpredictable stress-induced oxidative damage in brain and heart of mice. Biol Trace Elem Res 2011; 142:589-97. [PMID: 20635159 DOI: 10.1007/s12011-010-8771-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Accepted: 07/07/2010] [Indexed: 11/24/2022]
Abstract
Brain is a target of stress along with the immune, metabolic, and cardiovascular systems of the body. In the present work, the preventive roles of a multivitamin-mineral supplement and vitamins (E + C) in chronic unpredictable stress (CUS)-induced oxidative damage were studied in the brain and heart of Swiss albino mice. Thirty-two mice were randomized to one of the following groups: control + vehicle, CUS + vehicle, CUS + multivitamin-mineral, and CUS + vitamins (E + C). CUS was applied for 4 weeks, and multivitamin-mineral and vitamins (E + C) were administered orally for the same period. CUS led to a negative impact on all the biochemical parameters analyzed. Elevation in malondialdehyde and reduction in glutathione levels were found. The activities of superoxide dismutase, catalase, glutathione S-transferase, and glutathione reductase were decreased. Treatment with multivitamin-mineral and vitamins (E + C) brought these parameters to near normal levels. Multivitamin-mineral was found more restitutive than combined vitamins (E + C) doses. The present study hypothesizes that supplementation with a multivitamin-mineral may prove more effective than vitamin treatment alone in the alleviation of oxidative damage in brain and heart during periods of chronic stress.
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Affiliation(s)
- Shirin Hasan
- Department of Biochemistry, Faculty of Life Sciences, A. M. University, Aligarh, 202002 Uttar Pradesh, India
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41
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Puzserova A, Bernatova I. Chronic social stress increases nitric oxide-dependent vasorelaxation in normotensive rats. Interdiscip Toxicol 2010; 3:109-17. [PMID: 21331175 PMCID: PMC3035566 DOI: 10.2478/v10102-010-0049-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2010] [Revised: 12/05/2010] [Accepted: 12/06/2010] [Indexed: 11/21/2022] Open
Abstract
The aim of this study was to examine oxidative load and endothelium-dependent vasorelaxation in the serotonin pre-constricted femoral artery (FA) of Wistar-Kyoto (WKY) rats exposed to chronic social stress produced by crowding in the presence or absence of ascorbic acid (AsA) in working solution. Adult male rats were randomly divided into control (living space: 480 cm(2)/rat) or stressed (living space: 200 cm(2)/rat) groups for 8 weeks. Blood pressure and heart rate, determined using tail-cuff plethysmography, were not influenced by stress vs. control. Conjugated dienes (CD) and concentrations of thiobarbituric acid-reactive substances (TBARS) were measured in the left ventricle and liver (for assessment of oxidative load) and were found unchanged by chronic crowding. The nitric oxide (NO)-dependent component of endothelium-dependent relaxation was investigated in the FA using a wire myograph. In both the presence and absence of AsA, acetylcholine-induced relaxation of the FA of stressed rats significantly exceeded that of the controls, which was associated with an increase of the NO-dependent component. In conclusion, the data showed that chronic crowding did not produce oxidative stress in the organs investigated and indicate that elevation of NO production during chronic stress is an important way of adaptation, which may prevent normotensive rats from the development of stress-induced hypertension.
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Affiliation(s)
- Angelika Puzserova
- Institute of Normal and Pathological Physiology, Centre of Excellence for Cardiovascular Research, Slovak Academy of Sciences, Bratislava, Slovak Republic
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d'Audiffret AC, Frisbee SJ, Stapleton PA, Goodwill AG, Isingrini E, Frisbee JC. Depressive behavior and vascular dysfunction: a link between clinical depression and vascular disease? J Appl Physiol (1985) 2010; 108:1041-51. [PMID: 20167667 DOI: 10.1152/japplphysiol.01440.2009] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
As chronic stress and depression have become recognized as significant risk factors for peripheral vascular disease in patients with no prior history of vasculopathy, we interrogated this relationship utilizing an established mouse model of chronic stress/depressive symptoms from behavioral research. Male mice were exposed to 8 wk of unpredictable chronic mild stress (UCMS; e.g., wet bedding, predator sound/smell, random disruption of light/dark cycle), with indexes of depressive behavior (coat status, grooming, and mobility) becoming exacerbated vs. controls. In vascular rings, constrictor (phenylephrine) and endothelium-independent dilator (sodium nitroprusside) responses were not different between groups, although endothelium-dependent dilation (methacholine) was attenuated with UCMS. Nitric oxide synthase (NOS) inhibition was without effect in UCMS but nearly abolished reactivity in controls, while cyclooxygenase inhibition blunted dilation in both. Combined blockade abolished reactivity in controls, although a significant dilation remained in UCMS that was abolished by catalase. Arterial NO production was attenuated by UCMS, although H2O2 production was increased. UCMS mice demonstrated an increased, although variable, insulin resistance and inflammation. However, while UCMS-induced vascular impairments were consistent, the predictive power of aggregate plasma levels of insulin, TNF-alpha, IL-1beta, and C-reactive peptide were limited. However, when separated into tertiles with regard to vascular outcomes, insulin resistance and hypertension were predictive of the most severe vascular impairments. Taken together, these data suggest that aggregate insulin resistance, inflammation, and hypertension in UCMS mice are not robust predictors of vascular dysfunction, suggesting that unidentified mechanisms may be superior predictors of poor vascular outcomes in this model.
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Affiliation(s)
- Alexandre C d'Audiffret
- Center for Cardiovascular and Respiratory Sciences, Department of Community Medicine, West Virginia University School of Medicine, Morgantown, WV 26505, USA
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