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Tsushima H, Tada H, Asai A, Hirose M, Hosoyama T, Watanabe A, Murakami T, Sugimoto M. Roles of pigment epithelium-derived factor in exercise-induced suppression of senescence and its impact on lung pathology in mice. Aging (Albany NY) 2024; 16:10670-10693. [PMID: 38954512 PMCID: PMC11272117 DOI: 10.18632/aging.205976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 06/03/2024] [Indexed: 07/04/2024]
Abstract
Senescent cells contribute to tissue aging and underlie the pathology of chronic diseases. The benefits of eliminating senescent cells have been demonstrated in several disease models, and the efficacy of senolytic drugs is currently being tested in humans. Exercise training has been shown to reduce cellular senescence in several tissues; however, the mechanisms responsible remain unclear. We found that myocyte-derived factors significantly extended the replicative lifespan of fibroblasts, suggesting that myokines mediate the anti-senescence effects of exercise. A number of proteins within myocyte-derived factors were identified by mass spectrometry. Among these, pigment epithelium-derived factor (PEDF) exerted inhibitory effects on cellular senescence. Eight weeks of voluntary running increased Pedf levels in skeletal muscles and suppressed senescence markers in the lungs. The administration of PEDF reduced senescence markers in multiple tissues and attenuated the decline in respiratory function in the pulmonary emphysema mouse model. We also showed that blood levels of PEDF inversely correlated with the severity of COPD in patients. Collectively, these results strongly suggest that PEDF contributes to the beneficial effects of exercise, potentially suppressing cellular senescence and its associated pathologies.
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Affiliation(s)
- Hiromichi Tsushima
- Laboratory of Molecular and Cellular Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo 173-0015, Japan
| | - Hirobumi Tada
- Department of Nutrition, Shigakkan University, Aichi 474-8651, Japan
- Research Institute, National Center for Geriatrics and Gerontology, Aichi 474-8511, Japan
| | - Azusa Asai
- Research Institute, National Center for Geriatrics and Gerontology, Aichi 474-8511, Japan
| | - Mikako Hirose
- Laboratory of Molecular and Cellular Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo 173-0015, Japan
| | - Tohru Hosoyama
- Research Institute, National Center for Geriatrics and Gerontology, Aichi 474-8511, Japan
| | - Atsushi Watanabe
- Research Institute, National Center for Geriatrics and Gerontology, Aichi 474-8511, Japan
| | - Taro Murakami
- Department of Nutrition, Shigakkan University, Aichi 474-8651, Japan
| | - Masataka Sugimoto
- Laboratory of Molecular and Cellular Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo 173-0015, Japan
- Research Institute, National Center for Geriatrics and Gerontology, Aichi 474-8511, Japan
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2
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Kvandová M, Rajlic S, Stamm P, Schmal I, Mihaliková D, Kuntic M, Bayo Jimenez MT, Hahad O, Kollárová M, Ubbens H, Strohm L, Frenis K, Duerr GD, Foretz M, Viollet B, Ruan Y, Jiang S, Tang Q, Kleinert H, Rapp S, Gericke A, Schulz E, Oelze M, Keaney JF, Daiber A, Kröller-Schön S, Jansen T, Münzel T. Mitigation of aircraft noise-induced vascular dysfunction and oxidative stress by exercise, fasting, and pharmacological α1AMPK activation: molecular proof of a protective key role of endothelial α1AMPK against environmental noise exposure. Eur J Prev Cardiol 2023; 30:1554-1568. [PMID: 37185661 DOI: 10.1093/eurjpc/zwad075] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 02/22/2023] [Accepted: 03/11/2023] [Indexed: 05/17/2023]
Abstract
AIMS Environmental stressors such as traffic noise represent a global threat, accounting for 1.6 million healthy life years lost annually in Western Europe. Therefore, the noise-associated health side effects must be effectively prevented or mitigated. Non-pharmacological interventions such as physical activity or a balanced healthy diet are effective due to the activation of the adenosine monophosphate-activated protein kinase (α1AMPK). Here, we investigated for the first time in a murine model of aircraft noise-induced vascular dysfunction the potential protective role of α1AMPK activated via exercise, intermittent fasting, and pharmacological treatment. METHODS AND RESULTS Wild-type (B6.Cg-Tg(Cdh5-cre)7Mlia/J) mice were exposed to aircraft noise [maximum sound pressure level of 85 dB(A), average sound pressure level of 72 dB(A)] for the last 4 days. The α1AMPK was stimulated by different protocols, including 5-aminoimidazole-4-carboxamide riboside application, voluntary exercise, and intermittent fasting. Four days of aircraft noise exposure produced significant endothelial dysfunction in wild-type mice aorta, mesenteric arteries, and retinal arterioles. This was associated with increased vascular oxidative stress and asymmetric dimethylarginine formation. The α1AMPK activation with all three approaches prevented endothelial dysfunction and vascular oxidative stress development, which was supported by RNA sequencing data. Endothelium-specific α1AMPK knockout markedly aggravated noise-induced vascular damage and caused a loss of mitigation effects by exercise or intermittent fasting. CONCLUSION Our results demonstrate that endothelial-specific α1AMPK activation by pharmacological stimulation, exercise, and intermittent fasting effectively mitigates noise-induced cardiovascular damage. Future population-based studies need to clinically prove the concept of exercise/fasting-mediated mitigation of transportation noise-associated disease.
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Affiliation(s)
- Miroslava Kvandová
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
- Institute of Normal and Pathological Physiology, Center of Experimental Medicine, Slovak Academy of Sciences, Sienkiewiczova 1813 71 Bratislava, Slovak Republic
| | - Sanela Rajlic
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
- Department of Cardiovascular Surgery, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Paul Stamm
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Isabella Schmal
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Dominika Mihaliková
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Marin Kuntic
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Maria Teresa Bayo Jimenez
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Omar Hahad
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Marta Kollárová
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
- Institute of Physiology, Faculty of Medicine, Comenius University Bratislava, Sasinkova 2, 811 08 Bratislava, Slovakia
| | - Henning Ubbens
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Lea Strohm
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Katie Frenis
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Georg Daniel Duerr
- Department of Cardiovascular Surgery, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Marc Foretz
- Université Paris Cité, CNRS, INSERM, Institut Cochin, F-75014 Paris, France
| | - Benoit Viollet
- Université Paris Cité, CNRS, INSERM, Institut Cochin, F-75014 Paris, France
| | - Yue Ruan
- Department of Ophthalmology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Subao Jiang
- Department of Ophthalmology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Qi Tang
- Department of Ophthalmology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Hartmut Kleinert
- Department of Pharmacology, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Steffen Rapp
- Department of Cardiology, Preventive Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Adrian Gericke
- Department of Ophthalmology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | | | - Matthias Oelze
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - John F Keaney
- Division of Cardiovascular Medicine, UMass Medical School, 55 Lake Avenue North, Worcester, MA 01655, USA
| | - Andreas Daiber
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Swenja Kröller-Schön
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Thomas Jansen
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
- Department of Cardiology, KVB Hospital Königstein, 61462 Königstein, Germany
| | - Thomas Münzel
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Langenbeckstr. 1, 55131 Mainz, Germany
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Kvandova M, Puzserova A, Balis P. Sexual Dimorphism in Cardiometabolic Diseases: The Role of AMPK. Int J Mol Sci 2023; 24:11986. [PMID: 37569362 PMCID: PMC10418890 DOI: 10.3390/ijms241511986] [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: 06/28/2023] [Revised: 07/18/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023] Open
Abstract
Cardiovascular diseases (CVDs) are the leading cause of mortality and disability among both males and females. The risk of cardiovascular diseases is heightened by the presence of a risk factor cluster of metabolic syndrome, covering obesity and obesity-related cardiometabolic risk factors such as hypertension, glucose, and lipid metabolism dysregulation primarily. Sex hormones contribute to metabolic regulation and make women and men susceptible to obesity development in a different manner, which necessitates sex-specific management. Identifying crucial factors that protect the cardiovascular system is essential to enhance primary and secondary prevention of cardiovascular diseases and should be explicitly studied from the perspective of sex differences. It seems that AMP-dependent protein kinase (AMPK) may be such a factor since it has the protective role of AMPK in the cardiovascular system, has anti-diabetic properties, and is regulated by sex hormones. Those findings highlight the potential cardiometabolic benefits of AMPK, making it an essential factor to consider. Here, we review information about the cross-talk between AMPK and sex hormones as a critical point in cardiometabolic disease development and progression and a target for therapeutic intervention in human disease.
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Affiliation(s)
- Miroslava Kvandova
- Institute of Normal and Pathological Physiology, Centre of Experimental Medicine, Slovak Academy of Sciences, 841 04 Bratislava, Slovakia; (A.P.); (P.B.)
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Peinado BRR, Aragão WAB, Pereira CDS, da Silva DCB, Ferreira RDO, Chaves-Neto AH, Fernandes LMP, Lima RR. Physical Exercise Mitigates Salivary Gland and Saliva Damages in Rats Exposed to Binge-like Ethanol Pattern. Antioxidants (Basel) 2023; 12:antiox12051038. [PMID: 37237904 DOI: 10.3390/antiox12051038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/17/2023] [Accepted: 03/23/2023] [Indexed: 05/28/2023] Open
Abstract
Heavy episodic ethanol (EtOH) consumption is a typical pattern, especially among younger people. The therapeutic effect of exercise on EtOH damage has not yet been fully elucidated. Therefore, this study aims to investigate whether moderate exercise can reduce the damage generated by ethanol consumption in salivary glands and saliva. Thus, 32 male Wistar rats were divided into four groups: control (sedentary animals treated with water); training (trained animals treated with EtOH); EtOH (sedentary animals treated with EtOH); and EtOH + training (trained animals treated with ethanol). EtOH was administered to the animals at a dose of 3 g/kg/day at a concentration of 20% w/v for three consecutive days per week via intragastric gavage. The training was performed on a treadmill for five successive days. At the end of the 4-week experimental protocol, the animals were euthanized, and salivary glands and saliva were collected for oxidative biochemistry analysis. Our results showed that EtOH consumption generated changes in the oxidative biochemistry of the salivary glands and saliva. Thus, it was possible to conclude that moderate physical exercise can significantly recover antioxidant activity, reducing the damage generated by EtOH.
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Affiliation(s)
| | - Walessa Alana Bragança Aragão
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém 66075110, Brazil
| | - Cristian Dos Santos Pereira
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém 66075110, Brazil
| | - Diane Cleydes Baia da Silva
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém 66075110, Brazil
| | - Railson de Oliveira Ferreira
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém 66075110, Brazil
| | | | - Luanna Melo Pereira Fernandes
- Department of Morphology and Physiological Sciences, Center of Sciences Biological and Health, State University of Pará, Belém 66087662, Brazil
| | - Rafael Rodrigues Lima
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém 66075110, Brazil
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5
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Hohor S, Mandanach C, Maftei A, Zugravu CA, Oțelea MR. Impaired Melatonin Secretion, Oxidative Stress and Metabolic Syndrome in Night Shift Work. Antioxidants (Basel) 2023; 12:antiox12040959. [PMID: 37107334 PMCID: PMC10135726 DOI: 10.3390/antiox12040959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/08/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
Metabolic syndrome has been associated in many studies with working in shifts. Even if the mechanistic details are not fully understood, forced sleep deprivation and exposure to light, as happens during night shifts, or irregular schedules with late or very early onset of the working program, lead to a sleep-wake rhythm misalignment, metabolic dysregulation and oxidative stress. The cyclic melatonin secretion is regulated by the hypothalamic suprachiasmatic nuclei and light exposure. At a central level, melatonin promotes sleep and inhibits wake-signals. Beside this role, melatonin acts as an antioxidant and influences the functionality of the cardiovascular system and of different metabolic processes. This review presents data about the influence of night shifts on melatonin secretion and oxidative stress. Assembling data from epidemiological, experimental and clinical studies contributes to a better understanding of the pathological links between chronodisruption and the metabolic syndrome related to working in shifts.
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Affiliation(s)
- Sorina Hohor
- Doctoral School, "Carol Davila" University of Medicine and Pharmacy, 37 Dionisie Lupu Street, Sector 2, 020021 Bucharest, Romania
| | - Cristina Mandanach
- Doctoral School, "Carol Davila" University of Medicine and Pharmacy, 37 Dionisie Lupu Street, Sector 2, 020021 Bucharest, Romania
| | - Andreea Maftei
- Doctoral School, "Carol Davila" University of Medicine and Pharmacy, 37 Dionisie Lupu Street, Sector 2, 020021 Bucharest, Romania
- "Dr. Carol Davila" Central Military Emergency University Hospital, 134 Calea Plevnei, Sector 1, 010242 Bucharest, Romania
| | - Corina Aurelia Zugravu
- Department of Hygiene and Ecology, "Carol Davila" University of Medicine and Pharmacy, 37 Dionisie Lupu Street, Sector 2, 020021 Bucharest, Romania
| | - Marina Ruxandra Oțelea
- Clinical Department 5, "Carol Davila" University of Medicine and Pharmacy, 37 Dionisie Lupu Street, Sector 2, 020021 Bucharest, Romania
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Zhang X, Englund DA, Aversa Z, Jachim SK, White TA, LeBrasseur NK. Exercise Counters the Age-Related Accumulation of Senescent Cells. Exerc Sport Sci Rev 2022; 50:213-221. [PMID: 35776782 PMCID: PMC9680689 DOI: 10.1249/jes.0000000000000302] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We propose the beneficial effects of exercise are in part mediated through the prevention and elimination of senescent cells. Exercise counters multiple forms of age-related molecular damage that initiate the senescence program and activates immune cells responsible for senescent cell clearance. Preclinical and clinical evidence for exercise as a senescence-targeting therapy and areas needing further investigation are discussed.
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Affiliation(s)
- Xu Zhang
- Robert and Arlene Kogod Center on Aging, Rochester, MN
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN
| | - Davis A. Englund
- Robert and Arlene Kogod Center on Aging, Rochester, MN
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN
| | - Zaira Aversa
- Robert and Arlene Kogod Center on Aging, Rochester, MN
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN
| | - Sarah K. Jachim
- Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN
| | | | - Nathan K. LeBrasseur
- Robert and Arlene Kogod Center on Aging, Rochester, MN
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN
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Jîtcă G, Ősz BE, Tero-Vescan A, Miklos AP, Rusz CM, Bătrînu MG, Vari CE. Positive Aspects of Oxidative Stress at Different Levels of the Human Body: A Review. Antioxidants (Basel) 2022; 11:antiox11030572. [PMID: 35326222 PMCID: PMC8944834 DOI: 10.3390/antiox11030572] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/12/2022] [Accepted: 03/14/2022] [Indexed: 02/01/2023] Open
Abstract
Oxidative stress is the subject of numerous studies, most of them focusing on the negative effects exerted at both molecular and cellular levels, ignoring the possible benefits of free radicals. More and more people admit to having heard of the term "oxidative stress", but few of them understand the meaning of it. We summarized and analyzed the published literature data in order to emphasize the importance and adaptation mechanisms of basal oxidative stress. This review aims to provide an overview of the mechanisms underlying the positive effects of oxidative stress, highlighting these effects, as well as the risks for the population consuming higher doses than the recommended daily intake of antioxidants. The biological dose-response curve in oxidative stress is unpredictable as reactive species are clearly responsible for cellular degradation, whereas antioxidant therapies can alleviate senescence by maintaining redox balance; nevertheless, excessive doses of the latter can modify the redox balance of the cell, leading to a negative outcome. It can be stated that the presence of oxidative status or oxidative stress is a physiological condition with well-defined roles, yet these have been insufficiently researched and explored. The involvement of reactive oxygen species in the pathophysiology of some associated diseases is well-known and the involvement of antioxidant therapies in the processes of senescence, apoptosis, autophagy, and the maintenance of cellular homeostasis cannot be denied. All data in this review support the idea that oxidative stress is an undesirable phenomenon in high and long-term concentrations, but regular exposure is consistent with the hormetic theory.
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Affiliation(s)
- George Jîtcă
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania; (G.J.); (C.E.V.)
| | - Bianca E. Ősz
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania; (G.J.); (C.E.V.)
- Correspondence:
| | - Amelia Tero-Vescan
- Department of Biochemistry, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania; (A.T.-V.); (A.P.M.)
| | - Amalia Pușcaș Miklos
- Department of Biochemistry, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania; (A.T.-V.); (A.P.M.)
| | - Carmen-Maria Rusz
- Doctoral School of Medicine and Pharmacy, I.O.S.U.D, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania; (C.-M.R.); (M.-G.B.)
| | - Mădălina-Georgiana Bătrînu
- Doctoral School of Medicine and Pharmacy, I.O.S.U.D, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania; (C.-M.R.); (M.-G.B.)
| | - Camil E. Vari
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania; (G.J.); (C.E.V.)
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Lack of Endothelial α1AMPK Reverses the Vascular Protective Effects of Exercise by Causing eNOS Uncoupling. Antioxidants (Basel) 2021; 10:antiox10121974. [PMID: 34943078 PMCID: PMC8750041 DOI: 10.3390/antiox10121974] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/06/2021] [Accepted: 12/08/2021] [Indexed: 11/16/2022] Open
Abstract
Voluntary exercise training is an effective way to prevent cardiovascular disease, since it results in increased NO bioavailability and decreased reactive oxygen species (ROS) production. AMP-activated protein kinase (AMPK), especially its α1AMPK subunit, modulates ROS-dependent vascular homeostasis. Since endothelial cells play an important role in exercise-induced changes of vascular signaling, we examined the consequences of endothelial-specific α1AMPK deletion during voluntary exercise training. We generated a mouse strain with specific deletion of α1AMPK in endothelial cells (α1AMPKflox/flox x TekCre+). While voluntary exercise training improved endothelial function in wild-type mice, it had deleterious effects in mice lacking endothelial α1AMPK indicated by elevated reactive oxygen species production (measured by dihydroethidum fluorescence and 3-nitrotyrosine staining), eNOS uncoupling and endothelial dysfunction. Importantly, the expression of the phagocytic NADPH oxidase isoform (NOX-2) was down-regulated by exercise in control mice, whereas it was up-regulated in exercising α1AMPKflox/flox x TekCre+ animals. In addition, nitric oxide bioavailability was decreased and the antioxidant/protective nuclear factor erythroid 2-related factor 2 (Nrf-2) response via heme oxygenase 1 and uncoupling protein-2 (UCP-2) was impaired in exercising α1AMPKflox/flox x TekCre+ mice. Our results demonstrate that endothelial α1AMPK is a critical component of the signaling events that enable vascular protection in response to exercise. Moreover, they identify endothelial α1AMPK as a master switch that determines whether the effects of exercise on the vasculature are protective or detrimental.
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Hahad O, Kuntic M, Frenis K, Chowdhury S, Lelieveld J, Lieb K, Daiber A, Münzel T. Physical Activity in Polluted Air-Net Benefit or Harm to Cardiovascular Health? A Comprehensive Review. Antioxidants (Basel) 2021; 10:antiox10111787. [PMID: 34829658 PMCID: PMC8614825 DOI: 10.3390/antiox10111787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/01/2021] [Accepted: 11/04/2021] [Indexed: 12/15/2022] Open
Abstract
Both exposure to higher levels of polluted air and physical inactivity are crucial risk factors for the development and progression of major noncommunicable diseases and, in particular, of cardiovascular disease. In this context, the World Health Organization estimated 4.2 and 3.2 million global deaths per year in response to ambient air pollution and insufficient physical activity, respectively. While regular physical activity is well known to improve general health, it may also increase the uptake and deposit of air pollutants in the lungs/airways and circulation, due to increased breathing frequency and minute ventilation, thus increasing the risk of cardiovascular disease. Thus, determining the tradeoff between the health benefits of physical activity and the potential harmful effects of increased exposure to air pollution during physical activity has important public health consequences. In the present comprehensive review, we analyzed evidence from human and animal studies on the combined effects of physical activity and air pollution on cardiovascular and other health outcomes. We further report on pathophysiological mechanisms underlying air pollution exposure, as well as the protective effects of physical activity with a focus on oxidative stress and inflammation. Lastly, we provide mitigation strategies and practical recommendations for physical activity in areas with polluted air.
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Affiliation(s)
- Omar Hahad
- Department of Cardiology—Cardiology I, University Medical Center of the Johannes Gutenberg University Mainz, 55131 Mainz, Germany; (O.H.); (M.K.)
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, 55131 Mainz, Germany
- Leibniz Institute for Resilience Research (LIR), 55122 Mainz, Germany;
| | - Marin Kuntic
- Department of Cardiology—Cardiology I, University Medical Center of the Johannes Gutenberg University Mainz, 55131 Mainz, Germany; (O.H.); (M.K.)
| | - Katie Frenis
- Department of Hematology/Oncology, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115, USA;
| | - Sourangsu Chowdhury
- Atmospheric Chemistry Department, Max Planck Institute for Chemistry, 55122 Mainz, Germany; (S.C.); (J.L.)
| | - Jos Lelieveld
- Atmospheric Chemistry Department, Max Planck Institute for Chemistry, 55122 Mainz, Germany; (S.C.); (J.L.)
- Climate and Atmosphere Research Center, The Cyprus Institute, Nicosia 2121, Cyprus
| | - Klaus Lieb
- Leibniz Institute for Resilience Research (LIR), 55122 Mainz, Germany;
- Department of Psychiatry and Psychotherapy, University Medical Center of the Johannes Gutenberg University Mainz, 55131 Mainz, Germany
| | - Andreas Daiber
- Department of Cardiology—Cardiology I, University Medical Center of the Johannes Gutenberg University Mainz, 55131 Mainz, Germany; (O.H.); (M.K.)
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, 55131 Mainz, Germany
- Correspondence: (A.D.); (T.M.); Tel.: +49-(0)61-3117-6280 (A.D.); +49-(0)61-3117-7251 (T.M.)
| | - Thomas Münzel
- Department of Cardiology—Cardiology I, University Medical Center of the Johannes Gutenberg University Mainz, 55131 Mainz, Germany; (O.H.); (M.K.)
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, 55131 Mainz, Germany
- Correspondence: (A.D.); (T.M.); Tel.: +49-(0)61-3117-6280 (A.D.); +49-(0)61-3117-7251 (T.M.)
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10
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Ding YN, Wang HY, Chen HZ, Liu DP. Targeting senescent cells for vascular aging and related diseases. J Mol Cell Cardiol 2021; 162:43-52. [PMID: 34437878 DOI: 10.1016/j.yjmcc.2021.08.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 08/08/2021] [Accepted: 08/17/2021] [Indexed: 01/10/2023]
Abstract
Cardiovascular diseases are a serious threat to human health, especially in the elderly. Vascular aging makes people more susceptible to cardiovascular diseases due to significant dysfunction or senescence of vascular cells and maladaptation of vascular structure and function; moreover, vascular aging is currently viewed as a modifiable cardiovascular risk factor. To emphasize the relationship between senescent cells and vascular aging, we first summarize the roles of senescent vascular cells (endothelial cells, smooth muscle cells and immune cells) in the vascular aging process and inducers that contribute to cellular senescence. Then, we present potential strategies for directly targeting senescent cells (senotherapy) or preventively targeting senescence inducers (senoprevention) to delay vascular aging and the development of age-related vascular diseases. Finally, based on recent research, we note some important questions that still need to be addressed in the future.
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Affiliation(s)
- Yang-Nan Ding
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100005, People's Republic of China
| | - Hui-Yu Wang
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100005, People's Republic of China
| | - Hou-Zao Chen
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100005, People's Republic of China.
| | - De-Pei Liu
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100005, People's Republic of China.
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11
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Münzel T, Hahad O, Daiber A. Running in polluted air is a two-edged sword - physical exercise in low air pollution areas is cardioprotective but detrimental for the heart in high air pollution areas. Eur Heart J 2021; 42:2498-2500. [PMID: 33963403 PMCID: PMC8248992 DOI: 10.1093/eurheartj/ehab227] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Thomas Münzel
- Department of Cardiology, Cardiology I, University Medical Center Mainz, Mainz, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
| | - Omar Hahad
- Department of Cardiology, Cardiology I, University Medical Center Mainz, Mainz, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
| | - Andreas Daiber
- Department of Cardiology, Cardiology I, University Medical Center Mainz, Mainz, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
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12
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Tauffenberger A, Magistretti PJ. Reactive Oxygen Species: Beyond Their Reactive Behavior. Neurochem Res 2021; 46:77-87. [PMID: 33439432 PMCID: PMC7829243 DOI: 10.1007/s11064-020-03208-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 11/02/2020] [Accepted: 12/15/2020] [Indexed: 12/13/2022]
Abstract
Cellular homeostasis plays a critical role in how an organism will develop and age. Disruption of this fragile equilibrium is often associated with health degradation and ultimately, death. Reactive oxygen species (ROS) have been closely associated with health decline and neurological disorders, such as Alzheimer's disease or Parkinson's disease. ROS were first identified as by-products of the cellular activity, mainly mitochondrial respiration, and their high reactivity is linked to a disruption of macromolecules such as proteins, lipids and DNA. More recent research suggests more complex function of ROS, reaching far beyond the cellular dysfunction. ROS are active actors in most of the signaling cascades involved in cell development, proliferation and survival, constituting important second messengers. In the brain, their impact on neurons and astrocytes has been associated with synaptic plasticity and neuron survival. This review provides an overview of ROS function in cell signaling in the context of aging and degeneration in the brain and guarding the fragile balance between health and disease.
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Affiliation(s)
- Arnaud Tauffenberger
- King Abdullah University of Science and Technology, Thuwal, 23955, Kingdom of Saudi Arabia.
| | - Pierre J Magistretti
- King Abdullah University of Science and Technology, Thuwal, 23955, Kingdom of Saudi Arabia.
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13
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Chen X, Yi Z, Wong GT, Hasan KMM, Kwan JS, Ma AC, Chang RC. Is exercise a senolytic medicine? A systematic review. Aging Cell 2021; 20:e13294. [PMID: 33378138 PMCID: PMC7811843 DOI: 10.1111/acel.13294] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/15/2020] [Accepted: 12/01/2020] [Indexed: 12/14/2022] Open
Abstract
Cellular senescence, a state of irreversible growth arrest triggered by various stressors, engages in a category of pathological processes, whereby senescent cells accumulate in mitotic tissues. Senolytics as novel medicine against aging and various diseases through the elimination of senescent cells has emerged rapidly in recent years. Exercise is a potent anti‐aging and anti‐chronic disease medicine, which has shown the capacity to lower the markers of cellular senescence over the past decade. However, whether exercise is a senolytic medicine for aging and various diseases remains unclear. Here, we have conducted a systematic review of the published literature studying the senolytic effects of exercise or physical activity on senescent cells under various states in both human and animal models. Exercise can reduce the markers of senescent cells in healthy humans, while it lowered the markers of senescent cells in obese but not healthy animals. The discrepancy between human and animal studies may be due to the relatively small volume of research and the variations in markers of senescent cells, types of cells/tissues, and health conditions. These findings suggest that exercise has senolytic properties under certain conditions, which warrant further investigations.
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Affiliation(s)
- Xiang‐Ke Chen
- Laboratory of Neurodegenerative Diseases School of Biomedical Sciences LKS Faculty of Medicine The University of Hong Kong Hong Kong China
| | - Zhen‐Ni Yi
- Department of Health Technology and Informatics Hong Kong Polytechnic University Hong Kong China
| | - Gordon Tin‐Chun Wong
- Department of Anaesthesiology LKS Faculty of Medicine The University of Hong Kong Hong Kong China
| | - Kazi Md. Mahmudul Hasan
- Department of Health Technology and Informatics Hong Kong Polytechnic University Hong Kong China
| | | | - Alvin Chun‐Hang Ma
- Department of Health Technology and Informatics Hong Kong Polytechnic University Hong Kong China
| | - Raymond Chuen‐Chung Chang
- Laboratory of Neurodegenerative Diseases School of Biomedical Sciences LKS Faculty of Medicine The University of Hong Kong Hong Kong China
- State Key Laboratory of Brain and Cognitive Sciences The University of Hong Kong Hong Kong China
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14
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Chen X, Yi Z, Wong GT, Hasan KMM, Kwan JS, Ma AC, Chang RC. Is exercise a senolytic medicine? A systematic review. Aging Cell 2020. [DOI: https://doi.org/10.1111/acel.13294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Xiang‐Ke Chen
- Laboratory of Neurodegenerative Diseases School of Biomedical Sciences LKS Faculty of Medicine The University of Hong Kong Hong Kong China
| | - Zhen‐Ni Yi
- Department of Health Technology and Informatics Hong Kong Polytechnic University Hong Kong China
| | - Gordon Tin‐Chun Wong
- Department of Anaesthesiology LKS Faculty of Medicine The University of Hong Kong Hong Kong China
| | - Kazi Md. Mahmudul Hasan
- Department of Health Technology and Informatics Hong Kong Polytechnic University Hong Kong China
| | | | - Alvin Chun‐Hang Ma
- Department of Health Technology and Informatics Hong Kong Polytechnic University Hong Kong China
| | - Raymond Chuen‐Chung Chang
- Laboratory of Neurodegenerative Diseases School of Biomedical Sciences LKS Faculty of Medicine The University of Hong Kong Hong Kong China
- State Key Laboratory of Brain and Cognitive Sciences The University of Hong Kong Hong Kong China
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15
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Effects and Mechanisms of Five Psoralea Prenylflavonoids on Aging-Related Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:2128513. [PMID: 32655760 PMCID: PMC7320294 DOI: 10.1155/2020/2128513] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 05/12/2020] [Accepted: 05/28/2020] [Indexed: 01/09/2023]
Abstract
During the aging process, senescent cells gradually accumulate in the organs; they secrete proinflammatory cytokines and other factors, collectively known as the senescence-associated secretory phenotype (SASP). SASP secretions contribute to “inflammaging,” which is a state of chronic, systemic, sterility, low-grade inflammatory microenvironment and a key risk factor in the development of aging-related diseases. Fructus psoraleae is a traditional Chinese medical herb best known for delaying aging and treating osteoporosis. Prenylflavonoids from fructus psoraleae are the main bioactive compounds responsible for its pharmacological applications, such as beaching, bavachinin, bavachalcone, isobavachalcone, and neobavaisoflavone. In previous decades, there have been some promising studies on the pharmacology of fructus psoraleae. Here, we focus on the anti-inflammatory and antiaging diseases of five psoralea prenylflavonoids, such as cardiovascular protection, diabetes and obesity intervention, neuroprotection, and osteoporosis, and discuss the mechanism of these active ingredients for better understanding the material basis and drug application of fructus psoraleae in Chinese medicine.
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16
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Jansen T, Kvandová M, Daiber A, Stamm P, Frenis K, Schulz E, Münzel T, Kröller-Schön S. The AMP-Activated Protein Kinase Plays a Role in Antioxidant Defense and Regulation of Vascular Inflammation. Antioxidants (Basel) 2020; 9:antiox9060525. [PMID: 32560060 PMCID: PMC7346208 DOI: 10.3390/antiox9060525] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/10/2020] [Accepted: 06/11/2020] [Indexed: 12/12/2022] Open
Abstract
Cardiovascular diseases represent the leading cause of global deaths and life years spent with a severe disability. Endothelial dysfunction and vascular oxidative stress are early precursors of atherosclerotic processes in the vascular wall, all of which are hallmarks in the development of cardiovascular diseases and predictors of future cardiovascular events. There is growing evidence that inflammatory processes represent a major trigger for endothelial dysfunction, vascular oxidative stress and atherosclerosis and clinical data identified inflammation as a cardiovascular risk factor on its own. AMP-activated protein kinase (AMPK) is a central enzyme of cellular energy balance and metabolism that has been shown to confer cardio-protection and antioxidant defense which thereby contributes to vascular health. Interestingly, AMPK is also redox-regulated itself. We have previously shown that AMPK largely contributes to a healthy endothelium, confers potent antioxidant effects and prevents arterial hypertension. Recently, we provided deep mechanistic insights into the role of AMPK in cardiovascular protection and redox homeostasis by studies on arterial hypertension in endothelial and myelomonocytic cell-specific AMPK knockout (Cadh5CrexAMPKfl/fl and LysMCrexAMPKfl/fl) mice. Using these cell-specific knockout mice, we revealed the potent anti-inflammatory properties of AMPK representing the molecular basis of the antihypertensive effects of AMPK. Here, we discuss our own findings in the context of literature data with respect to the anti-inflammatory and antioxidant effects of AMPK in the specific setting of arterial hypertension as well as cardiovascular diseases in general.
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Affiliation(s)
- Thomas Jansen
- Center for Cardiology, Department of Cardiology 1—Molecular Cardiology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany; (T.J.); (M.K.); (P.S.); (K.F.); (T.M.)
| | - Miroslava Kvandová
- Center for Cardiology, Department of Cardiology 1—Molecular Cardiology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany; (T.J.); (M.K.); (P.S.); (K.F.); (T.M.)
| | - Andreas Daiber
- Center for Cardiology, Department of Cardiology 1—Molecular Cardiology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany; (T.J.); (M.K.); (P.S.); (K.F.); (T.M.)
- Partner Site Rhine-Main, German Center for Cardiovascular Research (DZHK), Langenbeckstr. 1, 55131 Mainz, Germany
- Correspondence: (A.D.); (S.K.-S); Tel.: +49-(0)6131-176280 (A.D.); Fax: +49-(0)6131-176293 (A.D.)
| | - Paul Stamm
- Center for Cardiology, Department of Cardiology 1—Molecular Cardiology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany; (T.J.); (M.K.); (P.S.); (K.F.); (T.M.)
| | - Katie Frenis
- Center for Cardiology, Department of Cardiology 1—Molecular Cardiology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany; (T.J.); (M.K.); (P.S.); (K.F.); (T.M.)
| | - Eberhard Schulz
- Department of Cardiology, Allgemeines Krankenhaus Celle, 29223 Celle, Germany;
| | - Thomas Münzel
- Center for Cardiology, Department of Cardiology 1—Molecular Cardiology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany; (T.J.); (M.K.); (P.S.); (K.F.); (T.M.)
- Partner Site Rhine-Main, German Center for Cardiovascular Research (DZHK), Langenbeckstr. 1, 55131 Mainz, Germany
| | - Swenja Kröller-Schön
- Center for Cardiology, Department of Cardiology 1—Molecular Cardiology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany; (T.J.); (M.K.); (P.S.); (K.F.); (T.M.)
- Correspondence: (A.D.); (S.K.-S); Tel.: +49-(0)6131-176280 (A.D.); Fax: +49-(0)6131-176293 (A.D.)
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17
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Zheng Z, Wang M, Cheng C, Liu D, Wu L, Zhu J, Qian X. Ginsenoside Rb1 reduces H2O2‑induced HUVEC dysfunction by stimulating the sirtuin‑1/AMP‑activated protein kinase pathway. Mol Med Rep 2020; 22:247-256. [PMID: 32377712 PMCID: PMC7248484 DOI: 10.3892/mmr.2020.11096] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 04/01/2020] [Indexed: 12/16/2022] Open
Abstract
Endothelial dysfunction and senescence are closely associated with cardiovascular diseases including atherosclerosis and hypertension. Ginsenoside Rb1 (Rb1), the major active constituent of ginseng, has been investigated intensively because of its anti-obesity and anti-inflammatory effects. In a previous study, hydrogen peroxide (H2O2) was applied to induce human umbilical vein endothelial cell (HUVEC) aging. It was demonstrated that Sirtuin-1 (SIRT1) was activated by Rb1 to protect HUVECs from H2O2-induced senescence. However, the mechanisms are not fully understood. The present study examined the role of AMP-activated protein kinase (AMPK), an energy sensor of cellular metabolism, in the signaling pathway of SIRT1 during H2O2-stimulated HUVEC aging. It was identified that Rb1 restored the H2O2-induced reduction of SIRT1 expression, which was consistent with our previous study, together with the activation of AMPK phosphorylation. Using compound C, an AMPK inhibitor, the role of AMPK in the protective effect of Rb1 against H2O2-induced HUVEC senescence was examined. It was identified that the induction of phosphorylated AMPK by Rb1 markedly increased endothelial nitric oxide synthase expression and nitric oxide production, and suppressed PAI-1 expression, which were abrogated in HUVECs pretreated with compound C. Further experiments demonstrated that nicotinamide, a SIRT1 inhibitor, downregulated the phosphorylation of AMPK and reduced the protective effects of Rb1 against H2O2-induced endothelial aging. Taken together, these results provide new insights into the possible molecular mechanisms by which Rb1 protects against H2O2-induced HUVEC senescence via the SIRT1/AMPK pathway.
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Affiliation(s)
- Zhenda Zheng
- Department of Cardiology, The Third Affiliated Hospital of Sun Yat‑sen University, Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Min Wang
- Department of Cardiology, The Third Affiliated Hospital of Sun Yat‑sen University, Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Cailian Cheng
- Department of Nephrology, The Third Affiliated Hospital of Sun Yat‑sen University, Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Dinghui Liu
- Department of Cardiology, The Third Affiliated Hospital of Sun Yat‑sen University, Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Lin Wu
- Department of Cardiology, The Third Affiliated Hospital of Sun Yat‑sen University, Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Jieming Zhu
- Department of Cardiology, The Third Affiliated Hospital of Sun Yat‑sen University, Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Xiaoxian Qian
- Department of Cardiology, The Third Affiliated Hospital of Sun Yat‑sen University, Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
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18
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Endothelial AMP-Activated Kinase α1 Phosphorylates eNOS on Thr495 and Decreases Endothelial NO Formation. Int J Mol Sci 2018; 19:ijms19092753. [PMID: 30217073 PMCID: PMC6165563 DOI: 10.3390/ijms19092753] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 09/07/2018] [Accepted: 09/11/2018] [Indexed: 02/08/2023] Open
Abstract
AMP-activated protein kinase (AMPK) is frequently reported to phosphorylate Ser1177 of the endothelial nitric-oxide synthase (eNOS), and therefore, is linked with a relaxing effect. However, previous studies failed to consistently demonstrate a major role for AMPK on eNOS-dependent relaxation. As AMPK also phosphorylates eNOS on the inhibitory Thr495 site, this study aimed to determine the role of AMPKα1 and α2 subunits in the regulation of NO-mediated vascular relaxation. Vascular reactivity to phenylephrine and acetylcholine was assessed in aortic and carotid artery segments from mice with global (AMPKα-/-) or endothelial-specific deletion (AMPKαΔEC) of the AMPKα subunits. In control and AMPKα1-depleted human umbilical vein endothelial cells, eNOS phosphorylation on Ser1177 and Thr495 was assessed after AMPK activation with thiopental or ionomycin. Global deletion of the AMPKα1 or α2 subunit in mice did not affect vascular reactivity. The endothelial-specific deletion of the AMPKα1 subunit attenuated phenylephrine-mediated contraction in an eNOS- and endothelium-dependent manner. In in vitro studies, activation of AMPK did not alter the phosphorylation of eNOS on Ser1177, but increased its phosphorylation on Thr495. Depletion of AMPKα1 in cultured human endothelial cells decreased Thr495 phosphorylation without affecting Ser1177 phosphorylation. The results of this study indicate that AMPKα1 targets the inhibitory phosphorylation Thr495 site in the calmodulin-binding domain of eNOS to attenuate basal NO production and phenylephrine-induced vasoconstriction.
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19
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Vaibhav K, Braun M, Khan MB, Fatima S, Saad N, Shankar A, Khan ZT, Harris RBS, Yang Q, Huo Y, Arbab AS, Giri S, Alleyne CH, Vender JR, Hess DC, Baban B, Hoda MN, Dhandapani KM. Remote ischemic post-conditioning promotes hematoma resolution via AMPK-dependent immune regulation. J Exp Med 2018; 215:2636-2654. [PMID: 30190288 PMCID: PMC6170180 DOI: 10.1084/jem.20171905] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 05/07/2018] [Accepted: 08/17/2018] [Indexed: 01/16/2023] Open
Abstract
Intracerebral hemorrhage is a devastating neurological injury that produces poor patient outcomes. In this report, Vaibhav et al. demonstrate that remote ischemic post-conditioning noninvasively accelerates hematoma resolution by enhancing AMPK-dependent alternative macrophage activation. Spontaneous intracerebral hemorrhage (ICH) produces the highest acute mortality and worst outcomes of all stroke subtypes. Hematoma volume is an independent determinant of ICH patient outcomes, making clot resolution a primary goal of clinical management. Herein, remote-limb ischemic post-conditioning (RIC), the repetitive inflation–deflation of a blood pressure cuff on a limb, accelerated hematoma resolution and improved neurological outcomes after ICH in mice. Parabiosis studies revealed RIC accelerated clot resolution via a humoral-mediated mechanism. Whereas RIC increased anti-inflammatory macrophage activation, myeloid cell depletion eliminated the beneficial effects of RIC after ICH. Myeloid-specific inactivation of the metabolic regulator, AMPKα1, attenuated RIC-induced anti-inflammatory macrophage polarization and delayed hematoma resolution, providing a molecular link between RIC and immune activation. Finally, chimera studies implicated myeloid CD36 expression in RIC-mediated neurological recovery after ICH. Thus, RIC, a clinically well-tolerated therapy, noninvasively modulates innate immune responses to improve ICH outcomes. Moreover, immunometabolic changes may provide pharmacodynamic blood biomarkers to clinically monitor the therapeutic efficacy of RIC.
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Affiliation(s)
- Kumar Vaibhav
- Department of Neurosurgery, Medical College of Georgia, Augusta University, Augusta, GA
| | - Molly Braun
- Department of Neurosurgery, Medical College of Georgia, Augusta University, Augusta, GA
| | | | - Sumbul Fatima
- Department of Medical Laboratory, Imaging, and Radiological Sciences, College of Allied Health Sciences, Augusta University, Augusta, GA
| | - Nancy Saad
- Department of Oral Biology, Dental College of Georgia, Augusta University, Augusta, GA
| | - Adarsh Shankar
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA
| | - Zenab T Khan
- Department of Neurosurgery, Medical College of Georgia, Augusta University, Augusta, GA
| | - Ruth B S Harris
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA
| | - Qiuhua Yang
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA
| | - Yuqing Huo
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA
| | - Ali S Arbab
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA
| | - Shailendra Giri
- Department of Neurology, Henry Ford Health System, Detroit, MI
| | - Cargill H Alleyne
- Department of Neurosurgery, Medical College of Georgia, Augusta University, Augusta, GA
| | - John R Vender
- Department of Neurosurgery, Medical College of Georgia, Augusta University, Augusta, GA
| | - David C Hess
- Department of Neurology, Medical College of Georgia, Augusta University, Augusta, GA
| | - Babak Baban
- Department of Neurology, Medical College of Georgia, Augusta University, Augusta, GA.,Department of Oral Biology, Dental College of Georgia, Augusta University, Augusta, GA.,Department of Surgery, Medical College of Georgia, Augusta University, Augusta, GA
| | - Md Nasrul Hoda
- Department of Neurology, Medical College of Georgia, Augusta University, Augusta, GA.,Department of Medical Laboratory, Imaging, and Radiological Sciences, College of Allied Health Sciences, Augusta University, Augusta, GA
| | - Krishnan M Dhandapani
- Department of Neurosurgery, Medical College of Georgia, Augusta University, Augusta, GA
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20
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Mechanisms Explaining Muscle Fatigue and Muscle Pain in Patients with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS): a Review of Recent Findings. Curr Rheumatol Rep 2017; 19:1. [PMID: 28116577 DOI: 10.1007/s11926-017-0628-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE OF REVIEW Here, we review potential causes of muscle dysfunction seen in many patients with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) such as the effects of oxidative and nitrosative stress (O&NS) and mitochondrial impairments together with reduced heat shock protein production and a range of metabolic abnormalities. RECENT FINDINGS Several studies published in the last few years have highlighted the existence of chronic O&NS, inflammation, impaired mitochondrial function and reduced heat shock protein production in many patients with ME/CFS. These studies have also highlighted the detrimental effects of chronically elevated O&NS on muscle functions such as reducing the time to muscle fatigue during exercise and impairing muscle contractility. Mechanisms have also been revealed by which chronic O&NS and or impaired heat shock production may impair muscle repair following exercise and indeed the adaptive responses in the striated muscle to acute and chronic increases in physical activity. The presence of chronic O&NS, low-grade inflammation and impaired heat shock protein production may well explain the objective findings of increased muscle fatigue, impaired contractility and multiple dimensions of exercise intolerance in many patients with ME/CFS.
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21
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Autophagy is required for endothelial cell alignment and atheroprotection under physiological blood flow. Proc Natl Acad Sci U S A 2017; 114:E8675-E8684. [PMID: 28973855 DOI: 10.1073/pnas.1702223114] [Citation(s) in RCA: 139] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
It has been known for some time that atherosclerotic lesions preferentially develop in areas exposed to low SS and are characterized by a proinflammatory, apoptotic, and senescent endothelial phenotype. Conversely, areas exposed to high SS are protected from plaque development, but the mechanisms have remained elusive. Autophagy is a protective mechanism that allows recycling of defective organelles and proteins to maintain cellular homeostasis. We aimed to understand the role of endothelial autophagy in the atheroprotective effect of high SS. Atheroprotective high SS stimulated endothelial autophagic flux in human and murine arteries. On the contrary, endothelial cells exposed to atheroprone low SS were characterized by inefficient autophagy as a result of mammalian target of rapamycin (mTOR) activation, AMPKα inhibition, and blockade of the autophagic flux. In hypercholesterolemic mice, deficiency in endothelial autophagy increased plaque burden only in the atheroresistant areas exposed to high SS; plaque size was unchanged in atheroprone areas, in which endothelial autophagy flux is already blocked. In cultured cells and in transgenic mice, deficiency in endothelial autophagy was characterized by defects in endothelial alignment with flow direction, a hallmark of endothelial cell health. This effect was associated with an increase in endothelial apoptosis and senescence in high-SS regions. Deficiency in endothelial autophagy also increased TNF-α-induced inflammation under high-SS conditions and decreased expression of the antiinflammatory factor KLF-2. Altogether, these results show that adequate endothelial autophagic flux under high SS limits atherosclerotic plaque formation by preventing endothelial apoptosis, senescence, and inflammation.
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22
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Boa BCS, Yudkin JS, van Hinsbergh VWM, Bouskela E, Eringa EC. Exercise effects on perivascular adipose tissue: endocrine and paracrine determinants of vascular function. Br J Pharmacol 2017; 174:3466-3481. [PMID: 28147449 DOI: 10.1111/bph.13732] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 01/20/2017] [Accepted: 01/23/2017] [Indexed: 12/11/2022] Open
Abstract
Obesity is a global epidemic, accompanied by increased risk of type 2 diabetes and cardiovascular disease. Adipose tissue hypertrophy is associated with adipose tissue inflammation, which alters the secretion of adipose tissue-derived bioactive products, known as adipokines. Adipokines determine vessel wall properties such as smooth muscle tone and vessel wall inflammation. Exercise is a mainstay of prevention of chronic, non-communicable diseases, type 2 diabetes and cardiovascular disease in particular. Aside from reducing adipose tissue mass, exercise has been shown to reduce inflammatory activity in this tissue. Mechanistically, contracting muscles release bioactive molecules known as myokines, which alter the metabolic phenotype of adipose tissue. In adipose tissue, myokines induce browning, enhance fatty acid oxidation and improve insulin sensitivity. In the past years, the perivascular adipose tissue (PVAT) which surrounds the vasculature, has been shown to control vascular tone and inflammation through local release of adipokines. In obesity, an increase in mass and inflammation of PVAT culminate in dysregulation of adipokine secretion, which contributes to vascular dysfunction. This review describes our current understanding of the mechanisms by which active muscles interact with adipose tissue and improve vascular function. Aside from the exercise-dependent regulation of canonical adipose tissue function, we will focus on the interactions between skeletal muscle and PVAT and the role of novel myokines, such as IL-15, FGF21 and irisin, in these interactions. LINKED ARTICLES This article is part of a themed section on Molecular Mechanisms Regulating Perivascular Adipose Tissue - Potential Pharmacological Targets? To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.20/issuetoc.
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Affiliation(s)
- B C S Boa
- Department of Physiology, VU University Medical Centre, Amsterdam, The Netherlands.,Laboratory for Clinical and Experimental Research on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - J S Yudkin
- Department of Medicine, University College London, London, UK
| | - V W M van Hinsbergh
- Department of Physiology, VU University Medical Centre, Amsterdam, The Netherlands
| | - E Bouskela
- Laboratory for Clinical and Experimental Research on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - E C Eringa
- Department of Physiology, VU University Medical Centre, Amsterdam, The Netherlands
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Liu D, Ding Z, Wu M, Xu W, Qian M, Du Q, Zhang L, Cui Y, Zheng J, Chang H, Huang C, Lin D, Wang Y. The apolipoprotein A-I mimetic peptide, D-4F, alleviates ox-LDL-induced oxidative stress and promotes endothelial repair through the eNOS/HO-1 pathway. J Mol Cell Cardiol 2017; 105:77-88. [PMID: 28274624 DOI: 10.1016/j.yjmcc.2017.01.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 12/30/2016] [Accepted: 01/27/2017] [Indexed: 02/08/2023]
Abstract
Apolipoprotein A-I (apoA-I) mimetic peptide exerts many anti-atherogenic properties. However, the underlying mechanisms related to the endothelial protective effects remain elusive. In this study, the apoA-I mimetic peptide, D-4F, was used. Proliferation assay, wound healing, and transwell migration experiments showed that D-4F improved the impaired endothelial proliferation and migration resulting from ox-LDL. Endothelial adhesion molecules expression and monocyte adhesion assay demonstrated that D-4F inhibited endothelial inflammation. Caspase-3 activation and TUNEL stain indicated that D-4F reduced endothelial cell apoptosis. A pivotal anti-oxidant enzyme, heme oxygenase-1 (HO-1) was upregulated by D-4F. The Akt/AMPK/eNOS pathways were involved in the expression of HO-1 induced by D-4F. Moreover, the anti-oxidation, pro-proliferation, and pro-migration capacities of D-4F were diminished by the inhibitors of both eNOS (L-NAME) and HO-1 (Znpp). Additionally, downregulation of ATP-binding cassette transporter A1 (ABCA1) by siRNA abolished the activation of Akt, AMPK and eNOS, and reduced the upregulation of HO-1 triggered by D-4F. Furthermore, D-4F promoted the reendothelialization of injured intima in carotid artery injury model of C57BL/6J mice in vivo. In summary, these findings suggested that D-4F might be a powerful candidate in the protection of endothelial cells and the prevention of cardiovascular disease (CVD).
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Affiliation(s)
- Donghui Liu
- Department of Cardiology, the Affiliated Xiamen Cardiovascular Hospital of Xiamen University, Medical College of Xiamen University, Xiamen 361004, China.
| | - Zhenzhen Ding
- Department of Cardiology, the Affiliated Xiamen Cardiovascular Hospital of Xiamen University, Medical College of Xiamen University, Xiamen 361004, China; Union Clinical Medical College of Fujian Medical University, Fuzhou 350001, China
| | - Mengzhang Wu
- Department of Cardiology, the Affiliated Xiamen Cardiovascular Hospital of Xiamen University, Medical College of Xiamen University, Xiamen 361004, China; Union Clinical Medical College of Fujian Medical University, Fuzhou 350001, China
| | - Wenqi Xu
- High-field NMR Research Center, MOE Key Laboratory of Spectrochemical Analysis& Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Mingming Qian
- Department of Cardiology, the Affiliated Xiamen Cardiovascular Hospital of Xiamen University, Medical College of Xiamen University, Xiamen 361004, China
| | - Qian Du
- Department of Cardiology, the Affiliated Xiamen Cardiovascular Hospital of Xiamen University, Medical College of Xiamen University, Xiamen 361004, China
| | - Le Zhang
- Department of Cardiology, the Affiliated Xiamen Cardiovascular Hospital of Xiamen University, Medical College of Xiamen University, Xiamen 361004, China
| | - Ye Cui
- Department of Ob/Gyn and Neonatal and Reproductive Medicine, the People's Liberation Army 174th Hospital and the Affiliated Hospital of Xiamen University, Xiamen 361003, China
| | - Jianlan Zheng
- Department of Ob/Gyn and Neonatal and Reproductive Medicine, the People's Liberation Army 174th Hospital and the Affiliated Hospital of Xiamen University, Xiamen 361003, China
| | - He Chang
- Department of Cardiology, the Affiliated Xiamen Cardiovascular Hospital of Xiamen University, Medical College of Xiamen University, Xiamen 361004, China
| | - Caihua Huang
- Department of Physical Education, Xiamen University of Technology, Xiamen 361021, China
| | - Donghai Lin
- High-field NMR Research Center, MOE Key Laboratory of Spectrochemical Analysis& Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yan Wang
- Department of Cardiology, the Affiliated Xiamen Cardiovascular Hospital of Xiamen University, Medical College of Xiamen University, Xiamen 361004, China.
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Chen X, An X, Chen D, Ye M, Shen W, Han W, Zhang Y, Gao P. Chronic Exercise Training Improved Aortic Endothelial and Mitochondrial Function via an AMPKα2-Dependent Manner. Front Physiol 2016; 7:631. [PMID: 28066264 PMCID: PMC5175474 DOI: 10.3389/fphys.2016.00631] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Accepted: 12/05/2016] [Indexed: 12/17/2022] Open
Abstract
Chronic exercise training is known to protect the vasculature; however, the underlying mechanisms remain obscure. The present study hypothesized that exercise may improve aortic endothelial and mitochondrial function through an adenosine monophosphate-activated protein kinase α2 (AMPKα2)-dependent manner. Ten-week-old AMPKα2 knockout (AMPKα2−/−) mice and age-matched wild-type (WT) mice were subjected to daily treadmill running for 6 weeks, and the thoracic aorta from these mice were used for further examination. Our results showed that exercise significantly promoted vasodilatation and increased expression and phosphorylation of endothelial nitric oxide synthase (eNOS), concomitant with increased AMPKα2 expression in WT mice. These effects were not observed in AMPKα2−/− mice. Furthermore, exercise training increased thoracic aortic mitochondrial content as indicated by increased Complex I and mitochondrial DNA (mtDNA) in WT mice but not in AMPKα2−/− mice. This may be caused by decreased mitochondrial autophagy since the expression of BH3 domain-containing BCL2 family members BNIP3-like (BNIP3L) and LC3B were decreased in WT mice with exercise. And these changes were absent with AMPKα2 deletion in mice. Importantly, exercise increased the expression of manganous superoxide dismutase (MnSOD) and catalase, suggesting that mitochondrial antioxidative capacity was increased. Notably, the improved antioxidative capacity was lost in AMPKα2−/− mice with exercise. In conclusion, this study illustrated that AMPKα2 plays a critical role in exercise-related vascular protection via increasing endothelial and mitochondrial function in the artery.
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Affiliation(s)
- Xiaohui Chen
- Laboratory of Vascular Biology and Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences Shanghai, China
| | - Xiangbo An
- Institute of Vascular Medicine, Peking University Third Hospital Beijing, China
| | - Dongrui Chen
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of MedicineShanghai, China; Shanghai Institute of HypertensionShanghai, China
| | - Maoqing Ye
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of MedicineShanghai, China; Shanghai Institute of HypertensionShanghai, China
| | - Weili Shen
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of MedicineShanghai, China; Shanghai Institute of HypertensionShanghai, China
| | - Weiqing Han
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of MedicineShanghai, China; Shanghai Institute of HypertensionShanghai, China
| | - Youyi Zhang
- Institute of Vascular Medicine, Peking University Third Hospital Beijing, China
| | - Pingjin Gao
- Laboratory of Vascular Biology and Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of SciencesShanghai, China; Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of MedicineShanghai, China; Shanghai Institute of HypertensionShanghai, China
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25
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Gliemann L, Nyberg M, Hellsten Y. Effects of exercise training and resveratrol on vascular health in aging. Free Radic Biol Med 2016; 98:165-176. [PMID: 27085843 DOI: 10.1016/j.freeradbiomed.2016.03.037] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 03/16/2016] [Accepted: 03/30/2016] [Indexed: 01/06/2023]
Abstract
Cardiovascular disease is a leading cause of death in the western world with aging being one of the strongest predictors of cardiovascular events. Aging is associated with impaired vascular function due to endothelial dysfunction and altered redox balance, partly caused by an increased formation of reactive oxygen species combined with a reduction in the endogenous antioxidant capacity. The consequence of these alterations is a reduced bioavailability of nitric oxide (NO) with implications for aspects such as control of vascular tone and low grade inflammation. However, it is not only aging per se but also the accumulative influence of physical inactivity and other life-style factors, which negatively affect the vascular system. Regular physical activity improves NO bioavailability, the redox balance and the plasma lipid profile and, at a functional level, reduces or even reverses a majority of the observed detrimental effects of aging on vascular function. The effects of aging and physical activity on vascular function are, in part, related to alterations in cellular signaling through sirtuin-1, AMPK and the estrogen receptor. The polyphenol resveratrol can activate these same pathways and has, in animals and in vitro models, been shown to act as a partial mimetic of physical activity. However, support for beneficial effects of resveratrol in human is weak and studies even show that resveratrol supplementation, similarly to supplementation with other antioxidants, can counteract the positive effects of physical activity. Regular physical activity remains the most effective way of maintaining and improving vascular health status and caution should be taken regarding potential interference of supplements on training adaptations.
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Affiliation(s)
- Lasse Gliemann
- Department of Nutrition, Exercise and Sports, Section for Integrative Physiology, University of Copenhagen, Universitetsparken 13, DK-2100 Copenhagen Ø, Denmark
| | - Michael Nyberg
- Department of Nutrition, Exercise and Sports, Section for Integrative Physiology, University of Copenhagen, Universitetsparken 13, DK-2100 Copenhagen Ø, Denmark
| | - Ylva Hellsten
- Department of Nutrition, Exercise and Sports, Section for Integrative Physiology, University of Copenhagen, Universitetsparken 13, DK-2100 Copenhagen Ø, Denmark.
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26
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Rodríguez-Núñez I, Romero F, Saavedra MJ. [Exercise-induced shear stress: Physiological basis and clinical impact]. ARCHIVOS DE CARDIOLOGIA DE MEXICO 2016; 86:244-54. [PMID: 27118039 DOI: 10.1016/j.acmx.2016.03.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 02/10/2016] [Accepted: 03/17/2016] [Indexed: 11/30/2022] Open
Abstract
The physiological regulation of vascular function is essential for cardiovascular health and depends on adequate control of molecular mechanisms triggered by endothelial cells in response to mechanical and chemical stimuli induced by blood flow. Endothelial dysfunction is one of the major risk factors for cardiovascular disease, where an imbalance between synthesis of vasodilator and vasoconstrictor molecules is one of its main mechanisms. In this context, the shear stress is one of the most important mechanical stimuli to improve vascular function, due to endothelial mechanotransduction, triggered by stimulation of various endothelial mechanosensors, induce signaling pathways culminating in increased bioavailability of vasodilators molecules such as nitric oxide, that finally trigger the angiogenic mechanisms. These mechanisms allow providing the physiological basis for the effects of exercise on vascular health. In this review it is discussed the molecular mechanisms involved in the vascular response induced by shear stress and its impact in reversing vascular injury associated with the most prevalent cardiovascular disease in our population.
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Affiliation(s)
- Iván Rodríguez-Núñez
- Laboratorio de Biología del Ejercicio, Escuela de Kinesiología, Facultad de Ciencias de la Salud, Universidad San Sebastián, Concepción, Chile; Carrera de Kinesiología, Facultad de Salud, Universidad Santo Tomás, Concepción, Chile; Programa de Doctorado en Ciencias Médicas, Facultad de Medicina, Universidad de la Frontera. Laboratorio de Neurociencia y Biología de péptidos CEBIOR-CEGIN BIOREN, Depto. Ciencias Preclínicas, Facultad Medicina, UFRO, Temuco, Chile; Programa de Magíster en Kinesiología Cardiorrespiratoria, Facultad de Ciencias de la Salud, Universidad San Sebastián, Concepción, Chile.
| | - Fernando Romero
- Programa de Doctorado en Ciencias Médicas, Facultad de Medicina, Universidad de la Frontera. Laboratorio de Neurociencia y Biología de péptidos CEBIOR-CEGIN BIOREN, Depto. Ciencias Preclínicas, Facultad Medicina, UFRO, Temuco, Chile
| | - María Javiera Saavedra
- Programa de Magíster en Kinesiología Cardiorrespiratoria, Facultad de Ciencias de la Salud, Universidad San Sebastián, Concepción, Chile
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Skeffington KL, Higgins JS, Mahmoud AD, Evans AM, Sferruzzi-Perri AN, Fowden AL, Yung HW, Burton GJ, Giussani DA, Moore LG. Hypoxia, AMPK activation and uterine artery vasoreactivity. J Physiol 2015; 594:1357-69. [PMID: 26110512 DOI: 10.1113/jp270995] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 06/21/2015] [Indexed: 01/12/2023] Open
Abstract
Genes near adenosine monophosphate-activated protein kinase-α1 (PRKAA1) have been implicated in the greater uterine artery (UtA) blood flow and relative protection from fetal growth restriction seen in altitude-adapted Andean populations. Adenosine monophosphate-activated protein kinase (AMPK) activation vasodilates multiple vessels but whether AMPK is present in UtA or placental tissue and influences UtA vasoreactivity during normal or hypoxic pregnancy remains unknown. We studied isolated UtA and placenta from near-term C57BL/6J mice housed in normoxia (n = 8) or hypoxia (10% oxygen, n = 7-9) from day 14 to day 19, and placentas from non-labouring sea level (n = 3) or 3100 m (n = 3) women. Hypoxia increased AMPK immunostaining in near-term murine UtA and placental tissue. RT-PCR products for AMPK-α1 and -α2 isoforms and liver kinase B1 (LKB1; the upstream kinase activating AMPK) were present in murine and human placenta, and hypoxia increased LKB1 and AMPK-α1 and -α2 expression in the high- compared with low-altitude human placentas. Pharmacological AMPK activation by A769662 caused phenylephrine pre-constricted UtA from normoxic or hypoxic pregnant mice to dilate and this dilatation was partially reversed by the NOS inhibitor l-NAME. Hypoxic pregnancy sufficient to restrict fetal growth markedly augmented the UtA vasodilator effect of AMPK activation in opposition to PE constriction as the result of both NO-dependent and NO-independent mechanisms. We conclude that AMPK is activated during hypoxic pregnancy and that AMPK activation vasodilates the UtA, especially in hypoxic pregnancy. AMPK activation may be playing an adaptive role by limiting cellular energy depletion and helping to maintain utero-placental blood flow in hypoxic pregnancy.
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Affiliation(s)
- K L Skeffington
- Centre for Trophoblast Research, Department of Physiology Development & Neuroscience, University of Cambridge, Cambridge, UK
| | - J S Higgins
- Centre for Trophoblast Research, Department of Physiology Development & Neuroscience, University of Cambridge, Cambridge, UK
| | - A D Mahmoud
- Centre for Integrative Physiology, College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, UK
| | - A M Evans
- Centre for Integrative Physiology, College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, UK
| | - A N Sferruzzi-Perri
- Centre for Trophoblast Research, Department of Physiology Development & Neuroscience, University of Cambridge, Cambridge, UK
| | - A L Fowden
- Centre for Trophoblast Research, Department of Physiology Development & Neuroscience, University of Cambridge, Cambridge, UK
| | - H W Yung
- Centre for Trophoblast Research, Department of Physiology Development & Neuroscience, University of Cambridge, Cambridge, UK
| | - G J Burton
- Centre for Trophoblast Research, Department of Physiology Development & Neuroscience, University of Cambridge, Cambridge, UK
| | - D A Giussani
- Centre for Trophoblast Research, Department of Physiology Development & Neuroscience, University of Cambridge, Cambridge, UK
| | - L G Moore
- Division of Basic Reproductive Sciences, Department of Obstetrics & Gynaecology, University of Colorado Denver, Aurora, CO, USA
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García-Prieto CF, Gil-Ortega M, Aránguez I, Ortiz-Besoain M, Somoza B, Fernández-Alfonso MS. Vascular AMPK as an attractive target in the treatment of vascular complications of obesity. Vascul Pharmacol 2015; 67-69:10-20. [PMID: 25869500 DOI: 10.1016/j.vph.2015.02.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 12/23/2014] [Accepted: 02/02/2015] [Indexed: 02/06/2023]
Abstract
The key for the survival of all organisms is the regulation and control of energy metabolism. Thus, several strategies have evolved in each tissue in order to balance nutrient supply with energy demand. Adenosine monophosphate-activated protein kinase (AMPK) is now recognized as a key participant in energy metabolism. It ensures an appropriate energetic supply by promoting energy conserving pathways in detriment of anabolic processes not essential for cell survival. Vascular AMPK plays a critical role in the regulation of blood flow and vascular tone through several mechanisms, including vasodilation by stimulating nitric oxide release in endothelial cells. Since obesity leads to endothelial damage and AMPK dysregulation, AMPK activation might be an important strategy to restore vascular function in cardiometabolic alterations. In the present review we focus on the role of vascular AMPK in both endothelial and smooth muscle cells, paying special attention to its dysregulation in obesity- and high-fat diet-related complications, as well as to the mechanisms and benefits of vascular AMPK activation.
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Affiliation(s)
- C F García-Prieto
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad CEU-San Pablo, 28668 Madrid, Spain
| | - M Gil-Ortega
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad CEU-San Pablo, 28668 Madrid, Spain
| | - I Aránguez
- Instituto Pluridisciplinar and Departamento de Farmacología, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain; Departamento de Bioquímica, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain
| | - M Ortiz-Besoain
- Departamento de Ciencias Farmacéuticas, Facultad de Ciencias, Edificio N3, Universidad Católica del Norte de Chile, Angamos, 0610 Antofagasta, Chile
| | - B Somoza
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad CEU-San Pablo, 28668 Madrid, Spain
| | - M S Fernández-Alfonso
- Instituto Pluridisciplinar and Departamento de Farmacología, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain.
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Impact of oxidative stress on exercising skeletal muscle. Biomolecules 2015; 5:356-77. [PMID: 25866921 PMCID: PMC4496677 DOI: 10.3390/biom5020356] [Citation(s) in RCA: 229] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 03/24/2015] [Accepted: 03/30/2015] [Indexed: 01/01/2023] Open
Abstract
It is well established that muscle contractions during exercise lead to elevated levels of reactive oxygen species (ROS) in skeletal muscle. These highly reactive molecules have many deleterious effects, such as a reduction of force generation and increased muscle atrophy. Since the discovery of exercise-induced oxidative stress several decades ago, evidence has accumulated that ROS produced during exercise also have positive effects by influencing cellular processes that lead to increased expression of antioxidants. These molecules are particularly elevated in regularly exercising muscle to prevent the negative effects of ROS by neutralizing the free radicals. In addition, ROS also seem to be involved in the exercise-induced adaptation of the muscle phenotype. This review provides an overview of the evidences to date on the effects of ROS in exercising muscle. These aspects include the sources of ROS, their positive and negative cellular effects, the role of antioxidants, and the present evidence on ROS-dependent adaptations of muscle cells in response to physical exercise.
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30
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Lei Y, Wang K, Deng L, Chen Y, Nice EC, Huang C. Redox Regulation of Inflammation: Old Elements, a New Story. Med Res Rev 2014; 35:306-40. [PMID: 25171147 DOI: 10.1002/med.21330] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Yunlong Lei
- State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy; West China Hospital; Sichuan University; Chengdu 610041 P.R. China
- Department of Biochemistry and Molecular Biology; Molecular Medicine and Cancer Research Center; Chongqing Medical University; Chongqing 400016 P.R. China
| | - Kui Wang
- State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy; West China Hospital; Sichuan University; Chengdu 610041 P.R. China
| | - Longfei Deng
- State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy; West China Hospital; Sichuan University; Chengdu 610041 P.R. China
| | - Yi Chen
- Department of Gastrointestinal Surgery; State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy; West China Hospital; Sichuan University; Chengdu 610041 China
| | - Edouard C. Nice
- Department of Biochemistry and Molecular Biology; Monash University; Clayton Victoria 3800 Australia
| | - Canhua Huang
- State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy; West China Hospital; Sichuan University; Chengdu 610041 P.R. China
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Enkhjargal B, Godo S, Sawada A, Suvd N, Saito H, Noda K, Satoh K, Shimokawa H. Endothelial AMP-activated protein kinase regulates blood pressure and coronary flow responses through hyperpolarization mechanism in mice. Arterioscler Thromb Vasc Biol 2014; 34:1505-13. [PMID: 24855056 DOI: 10.1161/atvbaha.114.303735] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Vascular endothelium plays an important role to maintain cardiovascular homeostasis through several mechanisms, including endothelium-dependent hyperpolarization (EDH). We have recently demonstrated that EDH is involved in endothelial metabolic regulation in mice. However, it remains to be examined whether AMP-activated protein kinase (AMPK), an important metabolic regulator, is involved in EDH and if so, whether endothelial AMPK (eAMPK) plays a role for circulatory regulation. APPROACH AND RESULTS We examined the role of eAMPK in EDH, using mice with endothelium-specific deficiency of α-catalytic subunit of AMPK, either α1 (eAMPKα1 (-/-)α2 (+/+)) or α2 (eAMPKα1 (+/+)α2 (-/-)) alone or both of them (eAMPKα1 (-/-)α2 (-/-)). We performed telemetry, organ chamber, electrophysiological, and Langendorff experiments to examine blood pressure, vascular responses, hyperpolarization of membrane potential, and coronary flow responses, respectively. Hypertension was noted throughout the day in eAMPKα1 (-/-)α2 (-/-) and eAMPKα1 (-/-)α2 (+/+) but not in eAMPKα1 (+/+)α2 (-/-) mice when compared with respective control. Importantly, endothelium-dependent relaxations, EDH, and coronary flow increase were all significantly reduced in eAMPKα1 (-/-)α2 (-/-) and eAMPKα1 (-/-)α2 (+/+) but not in eAMPKα1 (+/+)α2 (-/-) mice. In contrast, endothelium-independent relaxations to sodium nitroprusside (a NO donor), NS-1619 (a Ca(2+)-activated K(+) channel opener), and exogenous H2O2 were almost comparable among the groups. In eAMPKα1 (-/-)α2 (-/-) mice, antihypertensive treatment with hydralazine or long-term treatment with metformin (a stimulator of AMPK) failed to restore EDH-mediated responses. CONCLUSIONS These results provide the first direct evidence that α1 subunit of eAMPK substantially mediates EDH responses of microvessels and regulates blood pressure and coronary flow responses in mice in vivo, demonstrating the novel role of eAMPK in cardiovascular homeostasis.
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Affiliation(s)
- Budbazar Enkhjargal
- From the Department of Cardiovascular Medicine, Tohoku University, Sendai, Japan
| | - Shigeo Godo
- From the Department of Cardiovascular Medicine, Tohoku University, Sendai, Japan
| | - Ayuko Sawada
- From the Department of Cardiovascular Medicine, Tohoku University, Sendai, Japan
| | - Nergui Suvd
- From the Department of Cardiovascular Medicine, Tohoku University, Sendai, Japan
| | - Hiroki Saito
- From the Department of Cardiovascular Medicine, Tohoku University, Sendai, Japan
| | - Kazuki Noda
- From the Department of Cardiovascular Medicine, Tohoku University, Sendai, Japan
| | - Kimio Satoh
- From the Department of Cardiovascular Medicine, Tohoku University, Sendai, Japan
| | - Hiroaki Shimokawa
- From the Department of Cardiovascular Medicine, Tohoku University, Sendai, Japan.
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32
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Sheldon RD, Laughlin MH, Rector RS. Reduced hepatic eNOS phosphorylation is associated with NAFLD and type 2 diabetes progression and is prevented by daily exercise in hyperphagic OLETF rats. J Appl Physiol (1985) 2014; 116:1156-64. [PMID: 24577062 DOI: 10.1152/japplphysiol.01275.2013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
We tested the hypothesis that nonalcoholic fatty liver disease (NAFLD) is associated with reduced hepatic endothelial nitric oxide synthase (eNOS) activation status via S1177 phosphorylation (p-eNOS) and is prevented by daily voluntary wheel running (VWR). Hyperphagic Otsuka Long-Evans Tokushima Fatty (OLETF) rats, an established model of obesity, type 2 diabetes (T2D) and NAFLD, and normophagic controls [Long-Evans Tokushima Otsuka (LETO)] were studied at 8, 20, and 40 wk of age. Basal hepatic eNOS phosphorylation (p-eNOS/eNOS) was similar between LETO and OLETFs with early hepatic steatosis (8 wk of age) and advanced steatosis, hyperinsulinemia, and hyperglycemia (20 wk of age). In contrast, hepatic p-eNOS/eNOS was significantly lower (P < 0.05) in OLETF rats with T2D advancement and the transition to more advanced NAFLD with inflammation and fibrosis [increased tumor necrosis factor-α (TNF-α), CD68, and CD163 mRNA expression; 40 wk of age]. Reduced hepatic eNOS activation status in 40-wk OLETF rats was significantly correlated with reduced p-Akt/Akt (r = 0.73, P < 0.05), reduced serum insulin (r = 0.59, P < 0.05), and elevated serum glucose (r = -0.78, P < 0.05), suggesting a link between impaired glycemic control and altered hepatic nitric oxide metabolism. VWR by OLETF rats, in conjunction with NAFLD and T2D prevention, normalized p-eNOS/eNOS and p-Akt/Akt to LETO levels. Basal activation of hepatic eNOS and Akt are maintained until advanced NAFLD and T2D development in obese OLETF rats. The prevention of this reduction by VWR may result from maintained insulin sensitivity and glycemic control.
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Affiliation(s)
- Ryan D Sheldon
- Research Service, Harry S. Truman Memorial Veterans Affairs Hospital, Columbia, MO
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Coughlan KA, Valentine RJ, Ruderman NB, Saha AK. Nutrient Excess in AMPK Downregulation and Insulin Resistance. JOURNAL OF ENDOCRINOLOGY, DIABETES & OBESITY 2013; 1:1008. [PMID: 26120590 PMCID: PMC4479300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
It is well established that chronic exposure to excess nutrients leads to insulin resistance (IR) in skeletal muscle. Since skeletal muscle is responsible for 70-80% of insulin-stimulated glucose uptake, skeletal muscle IR is a key pathological component of type 2 diabetes (T2D). Recent evidence suggests that inhibition of the nutrient-sensing enzyme AMP-activated protein kinase (AMPK) is an early event in the development of IR in response to high glucose, branched chain amino acids (BCAA), or fatty acids (FA). Whether the decrease in AMPK activity is causal to the events leading to insulin resistance (increased mTOR/p70S6K signaling) remains to be determined. Interestingly, pharmacological activation of AMPK can prevent activation of mTOR/p70S6K and insulin resistance, while inhibition of mTOR with rapamycin prevents insulin resistance, but not AMPK downregulation. AMPK can be inhibited by increased energy state (reduced AMP/ATP ratio), decreased phosphorylation of its activation site (αThr172) (by decreased upstream kinase activity or increased phosphatase activity), increased inhibitory phosphorylation at αSer485/491, changes in redox state or hormone levels, or other yet to be identified mechanisms. Excess nutrients also lead to an accumulation of the toxic lipid intermediates diacylglycerol (DAG) and ceramides, both of which can activate various protein kinase C (PKC) isoforms, and contribute to IR. The mechanism responsible for the initial downregulation of AMPK in response to excess nutrients, and whether glucose, BCAA, and FA act through similar or different pathways requires further study. Identification of this mechanism and the relative importance of other events would be beneficial for designing novel pharmacological interventions to prevent and/or reverse IR. This review will focus on the some of the mechanisms responsible for AMPK downregulation and the relative sequence and importance of these events.
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Affiliation(s)
- Kimberly A. Coughlan
- Endocrinology and Diabetes, Department of Medicine, Boston University Medical Center, USA
| | - Rudy J. Valentine
- Endocrinology and Diabetes, Department of Medicine, Boston University Medical Center, USA
| | - Neil B. Ruderman
- Endocrinology and Diabetes, Department of Medicine, Boston University Medical Center, USA
| | - Asish K. Saha
- Endocrinology and Diabetes, Department of Medicine, Boston University Medical Center, USA
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