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Monfoulet LE, Ruskovska T, Ajdžanović V, Havlik J, Vauzour D, Bayram B, Krga I, Corral-Jara KF, Kistanova E, Abadjieva D, Massaro M, Scoditti E, Deligiannidou E, Kontogiorgis C, Arola-Arnal A, van Schothorst EM, Morand C, Milenkovic D. Molecular Determinants of the Cardiometabolic Improvements of Dietary Flavanols Identified by an Integrative Analysis of Nutrigenomic Data from a Systematic Review of Animal Studies. Mol Nutr Food Res 2021; 65:e2100227. [PMID: 34048642 DOI: 10.1002/mnfr.202100227] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 05/21/2021] [Indexed: 12/11/2022]
Abstract
SCOPE Flavanols are important polyphenols of the human diet with extensive demonstrations of their beneficial effects on cardiometabolic health. They contribute to preserve health acting on a large range of cellular processes. The underlying mechanisms of action of flavanols are not fully understood but involve a nutrigenomic regulation. METHODS AND RESULTS To further capture how the intake of dietary flavanols results in the modulation of gene expression, nutrigenomics data in response to dietary flavanols obtained from animal models of cardiometabolic diseases have been collected and submitted to a bioinformatics analysis. This systematic analysis shows that dietary flavanols modulate a large range of genes mainly involved in endocrine function, fatty acid metabolism, and inflammation. Several regulators of the gene expression have been predicted and include transcription factors, miRNAs and epigenetic factors. CONCLUSION This review highlights the complex and multilevel action of dietary flavanols contributing to their strong potential to preserve cardiometabolic health. The identification of the potential molecular mediators and of the flavanol metabolites driving the nutrigenomic response in the target organs is still a pending question which the answer will contribute to optimize the beneficial health effects of dietary bioactives.
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Affiliation(s)
| | - Tatjana Ruskovska
- Faculty of Medical Sciences, Goce Delcev University, Stip, North Macedonia
| | - Vladimir Ajdžanović
- Department of Cytology, Institute for Biological Research "Siniša Stanković,", National Institute of Republic of Serbia, University of Belgrade, 142 Despot Stefan Blvd., Belgrade, Serbia
| | - Jaroslav Havlik
- Department of Food Science, Czech University of Life Sciences Prague, Prague 6, Suchdol, Czech Republic
| | - David Vauzour
- Department of Nutrition and Preventive Medicine, Norwich Medical School, University of East Anglia, Norwich, NR4 7TJ, UK
| | - Banu Bayram
- Department of Nutrition and Dietetics, University of Health Sciences, Istanbul, Turkey
| | - Irena Krga
- Université Clermont Auvergne, INRAE, UNH, Clermont-Ferrand, F-63000, France.,Centre of Excellence in Nutrition and Metabolism Research, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | | | - Elena Kistanova
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Desislava Abadjieva
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Marika Massaro
- National Research Council (CNR) Institute of Clinical Physiology, Lecce, Italy
| | - Egeria Scoditti
- National Research Council (CNR) Institute of Clinical Physiology, Lecce, Italy
| | - Eirini Deligiannidou
- Laboratory of Hygiene and Environmental Protection, Department of Medicine, Democritus University of Thrace, Alexandroupolis, 68100, Greece
| | - Christos Kontogiorgis
- Laboratory of Hygiene and Environmental Protection, Department of Medicine, Democritus University of Thrace, Alexandroupolis, 68100, Greece
| | - Anna Arola-Arnal
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Nutrigenomics Research Group, Tarragona, 43007, Spain
| | | | - Christine Morand
- Université Clermont Auvergne, INRAE, UNH, Clermont-Ferrand, F-63000, France
| | - Dragan Milenkovic
- Université Clermont Auvergne, INRAE, UNH, Clermont-Ferrand, F-63000, France.,Department of Internal Medicine, Division of Cardiovascular Medicine, School of Medicine, University of California Davis, Davis, California, 95616, USA
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Weaver SR, Rendeiro C, McGettrick HM, Philp A, Lucas SJE. Fine wine or sour grapes? A systematic review and meta-analysis of the impact of red wine polyphenols on vascular health. Eur J Nutr 2021; 60:1-28. [PMID: 32303823 PMCID: PMC7867547 DOI: 10.1007/s00394-020-02247-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 04/01/2020] [Indexed: 12/22/2022]
Abstract
PURPOSE Red wine polyphenols (RWP) are plant-based molecules that have been extensively studied in relation to their protective effects on vascular health in both animals and humans. The aim of this review was to quantify and compare the efficacy of RWP and pure resveratrol on outcomes measures of vascular health and function in both animals and humans. METHODS Comprehensive database searches were carried out through PubMed, Web of Science and OVID for randomised, placebo-controlled studies in both animals and humans. Meta-analyses were carried out on acute and chronic studies of RWP in humans, alongside sub-group analysis where possible. Risk-of-bias assessment was carried out for all included studies based on randomisation, allocation, blinding, outcome data reporting, and other biases. RESULTS 48 animal and 37 human studies were included in data extraction following screening. Significant improvements in measures of blood pressure and vascular function following RWP were seen in 84% and 100% of animal studies, respectively. Human studies indicated significant improvements in systolic blood pressure overall (- 2.6 mmHg, 95% CI: [- 4.8, - 0.4]), with a greater improvement in pure-resveratrol studies alone (- 3.7 mmHg, 95% CI: [- 7.3, - 0.0]). No significant effects of RWP were seen in diastolic blood pressure or flow-mediated dilation (FMD) of the brachial artery. CONCLUSION RWP have the potential to improve vascular health in at risk human populations, particularly in regard to lowering systolic blood pressure; however, such benefits are not as prevalent as those observed in animal models.
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Affiliation(s)
- Samuel R Weaver
- School of Sport, Exercise and Rehabilitation Sciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK.
| | - Catarina Rendeiro
- School of Sport, Exercise and Rehabilitation Sciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
- Centre for Human Brain Health, University of Birmingham, Birmingham, B15 2TT, UK
| | - Helen M McGettrick
- Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, B15 2WB, UK
| | - Andrew Philp
- School of Sport, Exercise and Rehabilitation Sciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
- Garvan Institute of Medical Research, Darlinghurst, NSW, 2010, Australia
- St Vincent's Clinical School, UNSW Medicine, UNSW Sydney, Sydney, NSW, 2010, Australia
| | - Samuel J E Lucas
- School of Sport, Exercise and Rehabilitation Sciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
- Centre for Human Brain Health, University of Birmingham, Birmingham, B15 2TT, UK
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Widlansky ME, Hill RB. Mitochondrial regulation of diabetic vascular disease: an emerging opportunity. Transl Res 2018; 202:83-98. [PMID: 30144425 PMCID: PMC6218302 DOI: 10.1016/j.trsl.2018.07.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 07/09/2018] [Accepted: 07/27/2018] [Indexed: 12/15/2022]
Abstract
Diabetes-related vascular complication rates remain unacceptably high despite guideline-based medical therapies that are significantly more effective in individuals without diabetes. This critical gap represents an opportunity for researchers and clinicians to collaborate on targeting mechanisms and pathways that specifically contribute to vascular pathology in patients with diabetes mellitus. Dysfunctional mitochondria producing excessive mitochondrial reactive oxygen species (mtROS) play a proximal cell-signaling role in the development of vascular endothelial dysfunction in the setting of diabetes. Targeting the mechanisms of production of mtROS or mtROS themselves represents an attractive method to reduce the prevalence and severity of diabetic vascular disease. This review focuses on the role of mitochondria in the development of diabetic vascular disease and current developments in methods to improve mitochondrial health to improve vascular outcomes in patients with DM.
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Affiliation(s)
- Michael E Widlansky
- Department of Medicine, Division of Cardiovascular Medicine and Department of Pharmacology, Medical College of Wisconsin, Milwaukee, Wisconsin.
| | - R Blake Hill
- Department of Biochemisty, Medical College of Wisconsin, Milwaukee, Wisconsin
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Campos NA, da Cunha MSB, Arruda SF. Tucum-do-cerrado (Bactris setosa Mart.) modulates oxidative stress, inflammation, and apoptosis-related proteins in rats treated with azoxymethane. PLoS One 2018; 13:e0206670. [PMID: 30427888 PMCID: PMC6235309 DOI: 10.1371/journal.pone.0206670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 10/17/2018] [Indexed: 01/25/2023] Open
Abstract
Oxidative and inflammatory responses play an important role in the development and prevention of cancer, with both responses being modulated by phytochemical compounds. This study investigated the chemopreventive effect of tucum-do-cerrado fruit in rats treated with azoxymethane. Wistar rats were treated for 12 weeks with: a control diet (CT); a control diet + AOM (CT/DR); a control diet + 15% tucum-do-cerrado (TU); or a control diet + 15% tucum-do-cerrado + AOM (TU/DR). The association of tucum-do-cerrado and AOM (TU/DR) increased glutathione-S-transferase activity, decreased MDA levels, increased levels of COX2, TNFα and BAX, and decreased Bcl2/Bax ratio, compared to the CT/DR group. Carbonyl levels, IL-1β and IL-6 mRNA levels, and aberrant crypt foci showed no difference between the treatments. In conclusion, tucum-do-cerrado reduced lipid oxidative damage, induced a pro-inflammatory effect, and promoted a pro-apoptotic “environment” in rats treated with AOM; however no changes in aberrant crypts were observed.
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Affiliation(s)
- Natália A. Campos
- Postgraduate Program in Human Nutrition, Faculty of Health Sciences, Campus Universitário Darcy Ribeiro, Universidade de Brasília, Brasília, Brazil
- * E-mail:
| | - Marcela S. B. da Cunha
- Postgraduate Program in Human Nutrition, Faculty of Health Sciences, Campus Universitário Darcy Ribeiro, Universidade de Brasília, Brasília, Brazil
- Biological and Health Sciences Center, Campus Reitor Edgard Santos, Universidade Federal do Oeste da Bahia, Barreiras, Bahia, Brazil
| | - Sandra F. Arruda
- Postgraduate Program in Human Nutrition, Faculty of Health Sciences, Campus Universitário Darcy Ribeiro, Universidade de Brasília, Brasília, Brazil
- Department of Nutrition, Faculty of Health Sciences; Campus Universitário Darcy Ribeiro, Universidade de Brasília, Brasília, Distrito Federal, Brazil
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Pomatto LCD, Davies KJA. The role of declining adaptive homeostasis in ageing. J Physiol 2017; 595:7275-7309. [PMID: 29028112 PMCID: PMC5730851 DOI: 10.1113/jp275072] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 09/01/2017] [Indexed: 12/12/2022] Open
Abstract
Adaptive homeostasis is "the transient expansion or contraction of the homeostatic range for any given physiological parameter in response to exposure to sub-toxic, non-damaging, signalling molecules or events, or the removal or cessation of such molecules or events" (Davies, 2016). Adaptive homeostasis enables biological systems to make continuous short-term adjustments for optimal functioning despite ever-changing internal and external environments. Initiation of adaptation in response to an appropriate signal allows organisms to successfully cope with much greater, normally toxic, stresses. These short-term responses are initiated following effective signals, including hypoxia, cold shock, heat shock, oxidative stress, exercise-induced adaptation, caloric restriction, osmotic stress, mechanical stress, immune response, and even emotional stress. There is now substantial literature detailing a decline in adaptive homeostasis that, unfortunately, appears to manifest with ageing, especially in the last third of the lifespan. In this review, we present the hypothesis that one hallmark of the ageing process is a significant decline in adaptive homeostasis capacity. We discuss the mechanistic importance of diminished capacity for short-term (reversible) adaptive responses (both biochemical and signal transduction/gene expression-based) to changing internal and external conditions, for short-term survival and for lifespan and healthspan. Studies of cultured mammalian cells, worms, flies, rodents, simians, apes, and even humans, all indicate declining adaptive homeostasis as a potential contributor to age-dependent senescence, increased risk of disease, and even mortality. Emerging work points to Nrf2-Keap1 signal transduction pathway inhibitors, including Bach1 and c-Myc, both of whose tissue concentrations increase with age, as possible major causes for age-dependent loss of adaptive homeostasis.
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Affiliation(s)
- Laura C. D. Pomatto
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology CenterUniversity of Southern CaliforniaLos AngelesCA 90089USA
| | - Kelvin J. A. Davies
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology CenterUniversity of Southern CaliforniaLos AngelesCA 90089USA
- Molecular and Computational Biology Program, Department of Biological Sciences of the Dornsife College of LettersArts & Sciences: the University of Southern CaliforniaLos AngelesCA 90089‐0191USA
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Mária J, Ingrid Ž. Effects of bioactive compounds on senescence and components of senescence associated secretory phenotypes in vitro. Food Funct 2017; 8:2394-2418. [DOI: 10.1039/c7fo00161d] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Senescence is a permanent cell cycle arrest that is accompanied by changes in cell morphology and physiology occurringin vitroandin vivo.
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Affiliation(s)
- Janubová Mária
- Institute of Medical Chemistry
- Biochemistry and Clinical Biochemistry
- Medical Faculty
- Comenius University
- 813 72 Bratislava
| | - Žitňanová Ingrid
- Institute of Medical Chemistry
- Biochemistry and Clinical Biochemistry
- Medical Faculty
- Comenius University
- 813 72 Bratislava
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Calabrese V, Giordano J, Signorile A, Laura Ontario M, Castorina S, De Pasquale C, Eckert G, Calabrese EJ. Major pathogenic mechanisms in vascular dementia: Roles of cellular stress response and hormesis in neuroprotection. J Neurosci Res 2016; 94:1588-1603. [PMID: 27662637 DOI: 10.1002/jnr.23925] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 08/25/2016] [Accepted: 08/25/2016] [Indexed: 12/18/2022]
Abstract
Vascular dementia (VaD), considered the second most common cause of cognitive impairment after Alzheimer disease in the elderly, involves the impairment of memory and cognitive function as a consequence of cerebrovascular disease. Chronic cerebral hypoperfusion is a common pathophysiological condition frequently occurring in VaD. It is generally associated with neurovascular degeneration, in which neuronal damage and blood-brain barrier alterations coexist and evoke beta-amyloid-induced oxidative and nitrosative stress, mitochondrial dysfunction, and inflammasome- promoted neuroinflammation, which contribute to and exacerbate the course of disease. Vascular cognitive impairment comprises a heterogeneous group of cognitive disorders of various severity and types that share a presumed vascular etiology. The present study reviews major pathogenic factors involved in VaD, highlighting the relevance of cerebrocellular stress and hormetic responses to neurovascular insult, and addresses these mechanisms as potentially viable and valuable as foci of novel neuroprotective methods to mitigate or prevent VaD. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Vittorio Calabrese
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy.
| | - James Giordano
- Departments of Neurology and Biochemistry and Neuroethics Studies Program, Pellegrino Center for Clinical Bioethics, Georgetown University Medical Center, Washington, DC
| | - Anna Signorile
- Department of Basic Medical Sciences, Neurosciences and Sense Organs, University of Bari, Bari, Italy
| | - Maria Laura Ontario
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
| | - Sergio Castorina
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
| | - Concetta De Pasquale
- Department of Medical, Surgical Sciences and Advanced Technologies, University of Catania, Italy
| | - Gunter Eckert
- Institute of Nutrition Sciences, Justus-Liebig-University of Giessen, Giessen, Germany
| | - Edward J Calabrese
- Department of Environmental Health Sciences, University of Massachusetts, Amherst, Amherst, Massachusetts
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Krga I, Milenkovic D, Morand C, Monfoulet LE. An update on the role of nutrigenomic modulations in mediating the cardiovascular protective effect of fruit polyphenols. Food Funct 2016; 7:3656-76. [PMID: 27538117 DOI: 10.1039/c6fo00596a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Polyphenols are plant food microconstituents that are widely distributed in the human diet, with fruits and fruit-derived products as one of the main dietary sources. Epidemiological studies have shown an inverse relationship between the intake of different classes of polyphenols and the risk of myocardial infarction or cardiovascular disease (CVD) mortality. These compounds have been associated with the promotion of cardiovascular health as evidenced by clinical studies reporting beneficial effects of polyphenol-rich fruit consumption on intermediate markers of cardiovascular diseases. Additionally, animal and in vitro studies have indicated positive roles of polyphenols in preventing dysfunctions associated with the development of cardiovascular diseases. However, the mechanisms of action underlying their beneficial effects appear complex and are not fully understood. This review aims to provide an update on the nutrigenomic effects of different groups of polyphenols from fruits and especially focuses on their cardiovascular protective effects in cell and animal studies.
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Affiliation(s)
- I Krga
- INRA, UMR 1019, UNH, CRNH Auvergne, F-63000 Clermont-Ferrand, Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand, France.
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Age-Dependent Demethylation of Sod2 Promoter in the Mouse Femoral Artery. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:8627384. [PMID: 26989455 PMCID: PMC4771915 DOI: 10.1155/2016/8627384] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 01/13/2016] [Indexed: 11/17/2022]
Abstract
We studied the age-dependent regulation of the expression of the antioxidant enzyme manganese superoxide dismutase (MnSOD encoded by Sod2) through promoter methylation. C57Bl/6 mice were either (i) sedentary (SED), (ii) treated with the antioxidant catechin (CAT), or (iii) voluntarily exercised (EX) from weaning (1-month old; mo) to 9 mo. Then, all mice aged sedentarily and were untreated until 12 mo. Sod2 promoter methylation was similar in all groups in 9 mo but decreased (p < 0.05) in 12 mo SED mice only, which was associated with an increased (p < 0.05) transcriptional activity in vitro. At all ages, femoral artery endothelial function was maintained; this was due to an increased (p < 0.05) contribution of eNOS-derived NO in 12 mo SED mice only. CAT and EX prevented these changes in age-related endothelial function. Thus, a ROS-dependent epigenetic positive regulation of Sod2 gene expression likely represents a defense mechanism prolonging eNOS function in aging mouse femoral arteries.
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Thorin-Trescases N, Thorin E. Lifelong Cyclic Mechanical Strain Promotes Large Elastic Artery Stiffening: Increased Pulse Pressure and Old Age-Related Organ Failure. Can J Cardiol 2015; 32:624-33. [PMID: 26961664 DOI: 10.1016/j.cjca.2015.12.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 12/02/2015] [Accepted: 12/14/2015] [Indexed: 01/08/2023] Open
Abstract
The arterial wall is under a huge mechanical constraint imposed by the cardiac cycle that is bound to generate damage with time. Each heartbeat indeed imposes a pulsatile pressure that generates a vascular stretch. Lifetime accumulation of pulsatile stretches will eventually induce fatigue of the elastic large arterial walls, such as aortic and carotid artery walls, promoting their stiffening that will gradually perturb the normal blood flow and local pressure within the organs, and lead to organ failure. The augmented pulse pressure induced by arterial stiffening favours left ventricular hypertrophy because of the repeated extra work against stiff high-pressure arteries, and tissue damage as a result of excessive pulsatile pressure transmitted into the microcirculation, especially in low resistance/high-flow organs such as the brain and kidneys. Vascular aging is therefore characterized by the stiffening of large elastic arteries leading to a gradual increase in pulse pressure with age. In this review we focus on the effect of age-related stiffening of large elastic arteries. We report the clinical evidence linking arterial stiffness and organ failure and discuss the molecular pathways that are activated by the increase of mechanical stress in the wall. We also discuss the possible interventions that could limit arterial stiffening with age, such as regular aerobic exercise training, and some pharmacological approaches.
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Affiliation(s)
| | - Eric Thorin
- Montreal Heart Institute, Research Center, Montreal, Quebéc, Canada; Department of Surgery, Faculty of Medicine, Université de Montréal, Montreal, Quebéc, Canada.
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Leblond F, Nguyen A, Bolduc V, Lambert J, Yu C, Duquette N, Thorin E. Postnatal exposure to voluntary exercise but not the antioxidant catechin protects the vasculature after a switch to an atherogenic environment in middle-age mice. Pflugers Arch 2013; 465:197-208. [PMID: 23291710 DOI: 10.1007/s00424-012-1206-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 12/09/2012] [Accepted: 12/10/2012] [Indexed: 12/16/2022]
Abstract
We aimed to evaluate the lasting functional imprinting of exercise (EX) and catechin (CAT) on the vascular function of middle-age mice switched to a proatherogenic environment. C57BL/6J mice (n = 10-15 in each group) fed a regular diet (RD) were exposed from the age of 1 to 9 months either to EX (voluntary running; 2.7 ± 0.2 km/day), to the polyphenol CAT (30 mg/kg/day in drinking water), or to physical inactivity (PI). At 9 months of age, EX and CAT were stopped and mice either remained on the RD or were fed a Western diet (WD) for an additional 3 months. At 12 months of age, mice from all groups fed a WD had similar body mass, systolic blood pressure, and plasma total cholesterol, glucose, insulin, and isoprostane. Compared to the RD, the WD induced an indomethacin-sensitive aortic endothelium-dependent and independent dysfunction in PI mice (p < 0.05) that was prevented by both EX and CAT; this benefit was associated with a higher (p < 0.05) non-nitric oxide/non-prostacyclin endothelium-dependent relaxation. While EX, but not PI or CAT, prevented vascular dysfunction induced by the WD in cerebral arteries, it had no effect in femoral arteries. The profiles of activity of antioxidant enzymes and of proinflammatory gene expression in the aorta suggest a better adaptation of EX > CAT > PI mice to stress. In conclusion, our data suggest that a postnatal exposure to EX, but not to CAT, imprints an adaptive defense capacity in the vasculature against a deleterious change in lifestyle.
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Affiliation(s)
- Francois Leblond
- Department of Pharmacology, Université de Montréal, Montreal, Quebec, Canada
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