1
|
Reed KS, Frescoln AM, Keleher Q, Brellenthin AG, Kohut ML, Lefferts WK. Effects of aerobic exercise training on cerebral pulsatile hemodynamics in middle-aged adults with elevated blood pressure/stage 1 hypertension. J Appl Physiol (1985) 2024; 136:1376-1387. [PMID: 38601998 DOI: 10.1152/japplphysiol.00689.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 03/13/2024] [Accepted: 03/29/2024] [Indexed: 04/12/2024] Open
Abstract
Mechanisms behind the protective effects of aerobic exercise on brain health remain elusive but may be vascular in origin and relate to cerebral pulsatility. This pilot study investigated the effects of 12-wk aerobic exercise training on cerebral pulsatility and its vascular contributors (large artery stiffness, characteristic impedance) in at-risk middle-aged adults. Twenty-eight inactive middle-aged adults with elevated blood pressure or stage 1 hypertension were assigned to either moderate/vigorous aerobic exercise training (AET) for 3 days/wk or no-exercise control (CON) group. Middle cerebral artery (MCA) pulsatility index (PI), large artery (i.e., aorta, carotid) stiffness, and characteristic impedance were assessed via Doppler and tonometry at baseline, 6, and 12 wk, whereas cardiorespiratory fitness (V̇o2peak) was assessed via incremental exercise test and cognitive function via computerized battery at baseline and 12 wk. V̇o2peak increased 6% in AET and decreased 4% in CON (P < 0.05). Proximal aortic compliance increased (P = 0.04, partial η2 = 0.14) and aortic characteristic impedance decreased (P = 0.02, partial η2 = 0.17) with AET but not CON. Cerebral pulsatility showed a medium-to-large effect size increase with AET, although not statistically significant (P = 0.07, partial η2 = 0.11) compared with CON. Working memory reaction time improved with AET but not CON (P = 0.02, partial η2 = 0.20). Our data suggest 12-wk AET elicited improvements in central vascular hemodynamics (e.g., proximal aortic compliance and characteristic impedance) along with apparent, paradoxical increases in cerebral pulsatile hemodynamics.NEW & NOTEWORTHY We identify differential central versus cerebrovascular responses to 12 wk of aerobic exercise training in middle-aged adults. Although proximal aortic compliance and characteristic impedance improved after 12 wk of exercise, cerebral pulsatility tended to unexpectedly increase. These data suggest short-term aerobic exercise training may lead to more immediate benefits in the central vasculature, whereas longer duration exercise training may be required for beneficial changes in pulsatility within the cerebrovasculature.
Collapse
Affiliation(s)
- Krista S Reed
- Department of Kinesiology, Iowa State University, Ames, Iowa, United States
| | - Abby M Frescoln
- Department of Kinesiology, Iowa State University, Ames, Iowa, United States
| | - Quinn Keleher
- Department of Kinesiology, Iowa State University, Ames, Iowa, United States
| | | | - Marian L Kohut
- Department of Kinesiology, Iowa State University, Ames, Iowa, United States
| | - Wesley K Lefferts
- Department of Kinesiology, Iowa State University, Ames, Iowa, United States
| |
Collapse
|
2
|
Kim JJ, Ahn A, Ying J, Hickman E, Ludlow AT. Exercise as a Therapy to Maintain Telomere Function and Prevent Cellular Senescence. Exerc Sport Sci Rev 2023; 51:150-160. [PMID: 37288975 PMCID: PMC10526708 DOI: 10.1249/jes.0000000000000324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Exercise transiently impacts the expression, regulation, and activity of TERT/telomerase to maintain telomeres and protect the genome from insults. By protecting the telomeres (chromosome ends) and the genome, telomerase promotes cellular survival and prevents cellular senescence. By increasing cellular resiliency, via the actions of telomerase and TERT, exercise promotes healthy aging.
Collapse
Affiliation(s)
- Jeongjin J Kim
- School of Kinesiology, University of Michigan, Ann Arbor, MI
| | | | | | | | | |
Collapse
|
3
|
Kortebi I, Babits P, Bailleul C. Round and resilient: How does exercise get myonuclei in shape? J Physiol 2023. [PMID: 37282855 DOI: 10.1113/jp285046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 06/02/2023] [Indexed: 06/08/2023] Open
Affiliation(s)
- Ines Kortebi
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada
| | - Paul Babits
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada
| | - Celine Bailleul
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada
| |
Collapse
|
4
|
Sanchis-Gomar F, Arnau-Moyano M, Daimiel L, Lippi G, Leischik R, Vallecillo N, Yvert T, Jiménez SL, Santiago C, Pareja-Galeano H. Circulating microRNAs fluctuations in exercise-induced cardiac remodeling: A systematic review. Am J Transl Res 2021; 13:13298-13309. [PMID: 35035676 PMCID: PMC8748080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 10/30/2021] [Indexed: 06/14/2023]
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs that participate in gene expression regulation. It has been observed that circulating levels of miRNAs may fluctuate during exercise, showing numerous cardiac biological and physiological effects such as structural and functional adaptations. We aimed to provide an overview of the currently available information concerning the role of circulating miRNAs in cardiovascular adaptations in response to acute and/or chronic exercise training. Relevant studies published were searched in three databases: PubMed, Web of Science and Scopus. A combination of the following keywords was used: ("microRNA" OR "miRNA" OR "miR" AND "exercise" OR "training" OR "physical activity") AND "(heart hypertrophy" OR "cardiac remodeling" OR "cardiac muscle mass" OR "cardiac hypertrophy"). Only experimental studies, written in English and conducted in healthy individuals were included. Five articles met the inclusion criteria and were finally included in this systematic review after reviewing both title, abstract and full-text. A total of thirty-six circulating cardiac-related miRNAs were analyzed, but only five of them (miR-1, miR-133a, miR-146a, miR-206 and miR-221) were directly associated with cardiac adaptations parameters, while two of them (miR-1 and miR-133a) were related to cardiac hypertrophy. Most of them were upregulated immediately after a marathon and returned to basal levels at longer times. Therefore, we conclude that, although evidence is still limited, and long-term studies are needed to obtain more robust evidence, exercise is more likely to affect circulating cardiac-related miRNAs levels.
Collapse
Affiliation(s)
- Fabian Sanchis-Gomar
- Department of Physiology, Faculty of Medicine, University of Valencia and INCLIVA Biomedical Research InstituteValencia, Spain
| | | | - Lidia Daimiel
- Nutritional Control of The Epigenome Group, Instituto Madrileño de Estudios Avanzados (IMDEA) Food, CEI UAM+CSICMadrid 28049, Spain
| | - Giuseppe Lippi
- Section of Clinical Biochemistry, University of VeronaVerona, Italy
| | - Roman Leischik
- School of Medicine, Faculty of Health, Witten/Herdecke UniversityWitten, Germany
| | - Néstor Vallecillo
- Faculty of Biomedical and Health Sciences, Universidad Europea de MadridMadrid, Spain
| | - Thomas Yvert
- Faculty of Sport Sciences, Universidad Europea de MadridMadrid, Spain
| | - Sergio L Jiménez
- Centre for Sport Studies, Rey Juan Carlos UniversityMadrid, Spain
| | - Catalina Santiago
- Faculty of Sport Sciences, Universidad Europea de MadridMadrid, Spain
| | - Helios Pareja-Galeano
- Department of Physical Education, Sport and Human Movement, Universidad Autónoma de MadridMadrid, Spain
| |
Collapse
|
5
|
Flockhart M, Nilsson LC, Tais S, Ekblom B, Apró W, Larsen FJ. Excessive exercise training causes mitochondrial functional impairment and decreases glucose tolerance in healthy volunteers. Cell Metab 2021; 33:957-970.e6. [PMID: 33740420 DOI: 10.1016/j.cmet.2021.02.017] [Citation(s) in RCA: 90] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 11/18/2020] [Accepted: 02/22/2021] [Indexed: 12/19/2022]
Abstract
Exercise training positively affects metabolic health through increased mitochondrial oxidative capacity and improved glucose regulation and is the first line of treatment in several metabolic diseases. However, the upper limit of the amount of exercise associated with beneficial therapeutic effects has not been clearly identified. Here, we used a training model with a progressively increasing exercise load during an intervention over 4 weeks. We closely followed changes in glucose tolerance, mitochondrial function and dynamics, physical exercise capacity, and whole-body metabolism. Following the week with the highest exercise load, we found a striking reduction in intrinsic mitochondrial function that coincided with a disturbance in glucose tolerance and insulin secretion. We also assessed continuous blood glucose profiles in world-class endurance athletes and found that they had impaired glucose control compared with a matched control group.
Collapse
Affiliation(s)
- Mikael Flockhart
- The Swedish School of Sport and Health Sciences, GIH, Åstrand Laboratory, Department of Physiology, Nutrition and Biomechanics, Stockholm 114 33, Sweden.
| | - Lina C Nilsson
- The Swedish School of Sport and Health Sciences, GIH, Åstrand Laboratory, Department of Physiology, Nutrition and Biomechanics, Stockholm 114 33, Sweden
| | - Senna Tais
- The Swedish School of Sport and Health Sciences, GIH, Åstrand Laboratory, Department of Physiology, Nutrition and Biomechanics, Stockholm 114 33, Sweden
| | - Björn Ekblom
- The Swedish School of Sport and Health Sciences, GIH, Åstrand Laboratory, Department of Physiology, Nutrition and Biomechanics, Stockholm 114 33, Sweden
| | - William Apró
- The Swedish School of Sport and Health Sciences, GIH, Åstrand Laboratory, Department of Physiology, Nutrition and Biomechanics, Stockholm 114 33, Sweden; Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Filip J Larsen
- The Swedish School of Sport and Health Sciences, GIH, Åstrand Laboratory, Department of Physiology, Nutrition and Biomechanics, Stockholm 114 33, Sweden.
| |
Collapse
|
6
|
Abstract
Complex organisms rely heavily on intercellular communication. The rapidly expanding field of extracellular vesicle biology has made it clear that the necessary intercellular communication occurs partly through their paracrine and endocrine actions. Extracellular vesicles are nanoscale lipid membranes (30-2,000 nm in diameter) that shuttle functional biological material between cells. They are released from numerous tissues and are isolated from nearly all biofluids and cell cultures. Although their biogenesis, cell targeting, and functional roles are incompletely understood, they appear to have crucial roles in physiological and disease processes. Their enormous potential to serve as sensitive biomarkers of disease and also new therapeutic interventions for diseases have gained them considerable attention in recent years. Regular physical exercise training confers systemic health benefits and consequently prevents many age-related degenerative diseases. Many of the molecular mechanisms responsible for the salubrious effects of exercise are known, yet a common underlying mechanism potentially responsible for the holistic health benefits of exercise has only recently been explored (i.e., via extracellular vesicle transport of biological material). Here, we provide an overview of extracellular vesicle biology before outlining the current evidence on the capacity for a single bout and chronic exercise to elicit changes in extracellular vesicle content and modulate their molecular cargo (e.g., small RNAs). We highlight areas for future research and emphasize their potential utility as biomarkers and therapeutic strategies of disease and its prevention.
Collapse
Affiliation(s)
- Joshua Denham
- RMIT University, School of Health and Biomedical Sciences, Melbourne, Victoria, Australia
| | - Sarah J Spencer
- RMIT University, School of Health and Biomedical Sciences, Melbourne, Victoria, Australia
- ARC Centre of Excellence for Nanoscale Biophotonics, RMIT University, Melbourne, Victoria, Australia
| |
Collapse
|
7
|
Genders AJ, Martin SD, McGee SL, Bishop DJ. A physiological drop in pH decreases mitochondrial respiration, and HDAC and Akt signaling, in L6 myocytes. Am J Physiol Cell Physiol 2019; 316:C404-C414. [PMID: 30649921 DOI: 10.1152/ajpcell.00214.2018] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Exercise stimulates mitochondrial biogenesis and increases mitochondrial respiratory function and content. However, during high-intensity exercise muscle pH can decrease below pH 6.8 with a concomitant increase in lactate concentration. This drop in muscle pH is associated with reduced exercise-induced mitochondrial biogenesis, while increased lactate may act as a signaling molecule to affect mitochondrial biogenesis. Therefore, in this study we wished to determine the impact of altering pH and lactate concentration in L6 myotubes on genes and proteins known to be involved in mitochondrial biogenesis. We also examined mitochondrial respiration in response to these perturbations. Differentiated L6 myotubes were exposed to normal (pH 7.5)-, low (pH 7.0)-, or high (pH 8.0)-pH media with and without 20 mM sodium l-lactate for 1 and 6 h. Low pH and 20 mM sodium l-lactate resulted in decreased Akt (Ser473) and AMPK (T172) phosphorylation at 1 h compared with controls, while at 6 h the nuclear localization of histone deacetylase 5 (HDAC5) was decreased. When the pH was increased both Akt (Ser473) and AMPK (T172) phosphorylation was increased at 1 h. Overall increased lactate decreased the nuclear content of HDAC5 at 6 h. Exposure to both high- and low-pH media decreased basal mitochondrial respiration, ATP turnover, and maximum mitochondrial respiratory capacity. These data indicate that muscle pH affects several metabolic signaling pathways, including those required for mitochondrial function.
Collapse
Affiliation(s)
- Amanda J Genders
- Institute for Health and Sport, Victoria University , Melbourne, Victoria , Australia
| | - Sheree D Martin
- Metabolic Research Unit, School of Medicine and Centre for Molecular and Medical Research, Deakin University , Geelong, Victoria , Australia
| | - Sean L McGee
- Metabolic Research Unit, School of Medicine and Centre for Molecular and Medical Research, Deakin University , Geelong, Victoria , Australia.,Baker Heart and Diabetes Institute , Melbourne, Victoria , Australia
| | - David J Bishop
- Institute for Health and Sport, Victoria University , Melbourne, Victoria , Australia.,School of Medical and Health Sciences, Edith Cowan University , Joondalup, Western Australia , Australia
| |
Collapse
|
8
|
Margaritelis NV, Theodorou AA, Paschalis V, Veskoukis AS, Dipla K, Zafeiridis A, Panayiotou G, Vrabas IS, Kyparos A, Nikolaidis MG. Adaptations to endurance training depend on exercise-induced oxidative stress: exploiting redox interindividual variability. Acta Physiol (Oxf) 2018; 222. [PMID: 28544643 DOI: 10.1111/apha.12898] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 03/29/2017] [Accepted: 05/17/2017] [Indexed: 12/17/2022]
Abstract
AIM The aim of this study was to reveal the role of reactive oxygen and nitrogen species (RONS) in exercise adaptations under physiological in vivo conditions and without the interference from other exogenous redox agents (e.g. a pro-oxidant or antioxidant). METHODS We invented a novel methodological set-up that exploited the large redox interindividual variability in exercise responses. More specifically, we used exercise-induced oxidative stress as the 'classifier' measure (i.e. low, moderate and high) and investigated the physiological and redox adaptations after a 6-week endurance training protocol. RESULTS We demonstrated that the group with the low exercise-induced oxidative stress exhibited the lowest improvements in a battery of classic adaptations to endurance training (VO2 max, time trial and Wingate test) as well as in a set of redox biomarkers (oxidative stress biomarkers and antioxidants), compared to the high and moderate oxidative stress groups. CONCLUSION The findings of this study substantiate, for the first time in a human in vivo physiological context, and in the absence of any exogenous redox manipulation, the vital role of RONS produced during exercise in adaptations. The stratification approach, based on a redox phenotype, implemented in this study could be a useful experimental strategy to reveal the role of RONS and antioxidants in other biological manifestations as well.
Collapse
Affiliation(s)
- N. V. Margaritelis
- Department of Physical Education and Sports Science at Serres; Aristotle University of Thessaloniki; Serres Greece
- Intensive Care Unit; 424 General Military Hospital of Thessaloniki; Thessaloniki Greece
| | - A. A. Theodorou
- Department of Health Sciences; School of Sciences; European University Cyprus; Nicosia Cyprus
| | - V. Paschalis
- School of Physical Education and Sport Science; National and Kapodistrian University of Athens; Athens Greece
| | - A. S. Veskoukis
- Department of Physical Education and Sports Science at Serres; Aristotle University of Thessaloniki; Serres Greece
| | - K. Dipla
- Department of Physical Education and Sports Science at Serres; Aristotle University of Thessaloniki; Serres Greece
| | - A. Zafeiridis
- Department of Physical Education and Sports Science at Serres; Aristotle University of Thessaloniki; Serres Greece
| | - G. Panayiotou
- Department of Health Sciences; School of Sciences; European University Cyprus; Nicosia Cyprus
| | - I. S. Vrabas
- Department of Physical Education and Sports Science at Serres; Aristotle University of Thessaloniki; Serres Greece
| | - A. Kyparos
- Department of Physical Education and Sports Science at Serres; Aristotle University of Thessaloniki; Serres Greece
| | - M. G. Nikolaidis
- Department of Physical Education and Sports Science at Serres; Aristotle University of Thessaloniki; Serres Greece
| |
Collapse
|
9
|
Váncsa A. [Insight into the training of patients with idiopathic inflammatory myopathy]. Orv Hetil 2016; 157:1557-1562. [PMID: 27667295 DOI: 10.1556/650.2016.30549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Using current recommended treatment, a majority of patients with idiopathic inflammatory myopathy develop muscle impairment and poor health. Beneficial effects of exercise have been reported on muscle performance, aerobic capacity and health in chronic polymyositis and dermatomyositis, as well as in active disease and inclusion body myositis to some extent. Importantly, randomized controlled trials indicate that improved health and decreased clinical disease activity could be mediated through increased aerobic capacity. Recently, reports seeking pathomechanisms of the underlying effects of exercise on skeletal muscle indicate increased aerobic capacity (i.e. increased mitochondrial capacity and capillary density, reduced lactate levels), activation of genes of aerobic phenotype and muscle growth programs and down regulation of genes related to inflammation. Exercise contributes to both systemic and within-muscle adaptations demonstrating that it is fundamental for improving muscle performance and health in patients with idiopathic inflammatory myopathy. There is a need for randomized controlled trials to study the effects of exercise in patients with active disease and inclusion body myositis. Orv. Hetil., 2016, 157(39), 1557-1562.
Collapse
Affiliation(s)
- Andrea Váncsa
- Fizioterápiás Tanszék, Debreceni Egyetem, Népegészségügyi Kar Debrecen, Kassai u. 26., 4028
| |
Collapse
|
10
|
Deshmukh AS. Proteomics of Skeletal Muscle: Focus on Insulin Resistance and Exercise Biology. Proteomes 2016; 4:E6. [PMID: 28248217 DOI: 10.3390/proteomes4010006] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 01/25/2016] [Accepted: 01/28/2016] [Indexed: 12/21/2022] Open
Abstract
Skeletal muscle is the largest tissue in the human body and plays an important role in locomotion and whole body metabolism. It accounts for ~80% of insulin stimulated glucose disposal. Skeletal muscle insulin resistance, a primary feature of Type 2 diabetes, is caused by a decreased ability of muscle to respond to circulating insulin. Physical exercise improves insulin sensitivity and whole body metabolism and remains one of the most promising interventions for the prevention of Type 2 diabetes. Insulin resistance and exercise adaptations in skeletal muscle might be a cause, or consequence, of altered protein expressions profiles and/or their posttranslational modifications (PTMs). Mass spectrometry (MS)-based proteomics offer enormous promise for investigating the molecular mechanisms underlying skeletal muscle insulin resistance and exercise-induced adaptation; however, skeletal muscle proteomics are challenging. This review describes the technical limitations of skeletal muscle proteomics as well as emerging developments in proteomics workflow with respect to samples preparation, liquid chromatography (LC), MS and computational analysis. These technologies have not yet been fully exploited in the field of skeletal muscle proteomics. Future studies that involve state-of-the-art proteomics technology will broaden our understanding of exercise-induced adaptations as well as molecular pathogenesis of insulin resistance. This could lead to the identification of new therapeutic targets.
Collapse
|