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Dong R, Denier-Fields DN, Van Hulle CA, Kollmorgen G, Suridjan I, Wild N, Lu Q, Anderson RM, Zetterberg H, Blennow K, Carlsson CM, Johnson SC, Engelman CD. Identification of plasma metabolites associated with modifiable risk factors and endophenotypes reflecting Alzheimer's disease pathology. Eur J Epidemiol 2023; 38:559-571. [PMID: 36964431 PMCID: PMC11070200 DOI: 10.1007/s10654-023-00988-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 03/05/2023] [Indexed: 03/26/2023]
Abstract
Modifiable factors can influence the risk for Alzheimer's disease (AD) and serve as targets for intervention; however, the biological mechanisms linking these factors to AD are unknown. This study aims to identify plasma metabolites associated with modifiable factors for AD, including MIND diet, physical activity, smoking, and caffeine intake, and test their association with AD endophenotypes to identify their potential roles in pathophysiological mechanisms. The association between each of the 757 plasma metabolites and four modifiable factors was tested in the wisconsin registry for Alzheimer's prevention cohort of initially cognitively unimpaired, asymptomatic middle-aged adults. After Bonferroni correction, the significant plasma metabolites were tested for association with each of the AD endophenotypes, including twelve cerebrospinal fluid (CSF) biomarkers, reflecting key pathophysiologies for AD, and four cognitive composite scores. Finally, causal mediation analyses were conducted to evaluate possible mediation effects. Analyses were performed using linear mixed-effects regression. A total of 27, 3, 23, and 24 metabolites were associated with MIND diet, physical activity, smoking, and caffeine intake, respectively. Potential mediation effects include beta-cryptoxanthin in the association between MIND diet and preclinical Alzheimer cognitive composite score, hippurate between MIND diet and immediate learning, glutamate between physical activity and CSF neurofilament light, and beta-cryptoxanthin between smoking and immediate learning. Our study identified several plasma metabolites that are associated with modifiable factors. These metabolites can be employed as biomarkers for tracking these factors, and they provide a potential biological pathway of how modifiable factors influence the human body and AD risk.
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Affiliation(s)
- Ruocheng Dong
- Department of Population Health Sciences, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53726, USA
| | - Diandra N Denier-Fields
- Department of Population Health Sciences, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53726, USA
- Department of Nutrition Science, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Carol A Van Hulle
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53792, USA
- Wisconsin Alzheimer's Disease Research Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53792, USA
| | | | | | - Norbert Wild
- Roche Diagnostics GmbH, 82377, Penzberg, Germany
| | - Qiongshi Lu
- Department of Biostatistics and Medical Informatics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53792, USA
| | - Rozalyn M Anderson
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53792, USA
- Geriatric Research Education and Clinical Center, William. S. Middleton Memorial Veterans Hospital, Madison, WI, 53705, USA
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at University of Gothenburg, S-43180, Mölndal, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, S-43180, Mölndal, Sweden
- UK Dementia Research Institute at UCL, London, WC1E 6BT, UK
- Department of Neurodegenerative Disease, UCL Institute of Neurology, London, WC1H 0AL, UK
- Hong Kong Center for Neurodegenerative Diseases, Clear Water Bay, Hong Kong, China
| | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at University of Gothenburg, S-43180, Mölndal, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, S-43180, Mölndal, Sweden
| | - Cynthia M Carlsson
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53792, USA
- Wisconsin Alzheimer's Disease Research Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53792, USA
- Geriatric Research Education and Clinical Center, William. S. Middleton Memorial Veterans Hospital, Madison, WI, 53705, USA
| | - Sterling C Johnson
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53792, USA
- Wisconsin Alzheimer's Disease Research Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53792, USA
- Geriatric Research Education and Clinical Center, William. S. Middleton Memorial Veterans Hospital, Madison, WI, 53705, USA
- Wisconsin Alzheimer's Institute, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53719, USA
| | - Corinne D Engelman
- Department of Population Health Sciences, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53726, USA.
- Wisconsin Alzheimer's Disease Research Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53792, USA.
- Wisconsin Alzheimer's Institute, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53719, USA.
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Giampaoli O, Ieno C, Sciubba F, Spagnoli M, Miccheli A, Tomassini A, Aureli W, Fattorini L. Metabolic Biomarkers of Red Beetroot Juice Intake at Rest and after Physical Exercise. Nutrients 2023; 15:2026. [PMID: 37432172 DOI: 10.3390/nu15092026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/20/2023] [Accepted: 04/20/2023] [Indexed: 07/12/2023] Open
Abstract
BACKGROUND Red beetroot is known to be a health-promoting food. However, little attention is placed on intestinal bioactive compound absorption. The aim of the study was to assess the urinary red beetroot juice (RBJ) intake biomarkers and possible differences in RBJ's micronutrient absorption at rest or after physical exercise. METHODS This is a three-armed, single-blind study, involving seven healthy volunteers which were randomly divided into three groups and alternatively assigned to three experimental sessions: RBJ intake at rest, RBJ intake with physical activity, and placebo intake with physical activity. For each session, urine samples were collected before and 120, 180, and 240 min after the intake of RBJ or placebo. The same sampling times were employed for the experimental session at rest. The RBJ metabolic composition was also characterized to identify the urinary biomarkers derived from the intake. RESULTS 4-methylpyridine-2-carboxylic acid, dopamine-3-O-sulfate, glutamine, and 3-hydroxyisobutyrate were identified as RBJ intake biomarkers. Physical activity significantly increased only the dopamine-3-O-sulfate excretion 120 min after RBJ intake. CONCLUSIONS Urinary dopamine-3-O-sulfate is related to RBJ dopamine content, while 4-methylpyridine-2-carboxylic acid is a betanin or betalamic acid catabolite. The different excretions of these metabolites following physical activity suggest a possible effect on the RBJ uptake depending on different transport processes through the mucosa, namely diffusion-mediated transport for dopamine and saturable transcellular transport for betalamic acid derivatives. These results open new perspectives in improving the absorption of natural bioactive molecules through physical activity.
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Affiliation(s)
- Ottavia Giampaoli
- NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, 00185 Rome, Italy
- Department of Environmental Biology, Sapienza University of Rome, 00185 Rome, Italy
| | - Cristian Ieno
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, 00185 Rome, Italy
| | - Fabio Sciubba
- NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, 00185 Rome, Italy
- Department of Environmental Biology, Sapienza University of Rome, 00185 Rome, Italy
| | - Mariangela Spagnoli
- NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, 00185 Rome, Italy
- Department of Occupational Medicine, Epidemiology and Hygiene, INAIL, Monte Porzio Catone, 00078 Rome, Italy
| | - Alfredo Miccheli
- NMR-Based Metabolomics Laboratory (NMLab), Sapienza University of Rome, 00185 Rome, Italy
- Department of Environmental Biology, Sapienza University of Rome, 00185 Rome, Italy
| | - Alberta Tomassini
- R&D Aureli Mario S. S. Agricola, Via Mario Aureli 7, 67050 Ortucchio, Italy
| | - Walter Aureli
- R&D Aureli Mario S. S. Agricola, Via Mario Aureli 7, 67050 Ortucchio, Italy
| | - Luigi Fattorini
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, 00185 Rome, Italy
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Nogueira-Ferreira R, Santos I, Ferreira R, Fontoura D, Sousa-Mendes C, Falcão-Pires I, Lourenço A, Leite-Moreira A, Duarte IF, Moreira-Gonçalves D. Exercise training impacts skeletal muscle remodelling induced by metabolic syndrome in ZSF1 rats through metabolism regulation. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166709. [PMID: 37030522 DOI: 10.1016/j.bbadis.2023.166709] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 02/28/2023] [Accepted: 03/28/2023] [Indexed: 04/10/2023]
Abstract
Metabolic syndrome (MetS), characterized by a set of conditions that include obesity, hypertension, and dyslipidemia, is associated with increased cardiovascular risk. Exercise training (EX) has been reported to improve MetS management, although the underlying metabolic adaptations that drive its benefits remain poorly understood. This work aims to characterize the molecular changes induced by EX in skeletal muscle in MetS, focusing on gastrocnemius metabolic remodelling. 1H NMR metabolomics and molecular assays were employed to assess the metabolic profile of skeletal muscle tissue from lean male ZSF1 rats (CTL), obese sedentary male ZSF1 rats (MetS-SED), and obese male ZF1 rats submitted to 4 weeks of treadmill EX (5 days/week, 60 min/day, 15 m/min) (MetS-EX). EX did not counteract the significant increase of body weight and circulating lipid profile, but had an anti-inflammatory effect and improved exercise capacity. The decreased gastrocnemius mass observed in MetS was paralleled with glycogen degradation into small glucose oligosaccharides, with the release of glucose-1-phosphate, and an increase in glucose-6-phosphate and glucose levels. Moreover, sedentary MetS animals' muscle exhibited lower AMPK expression levels and higher amino acids' metabolism such as glutamine and glutamate, compared to lean animals. In contrast, the EX group showed changes suggesting an increase in fatty acid oxidation and oxidative phosphorylation. Additionally, EX mitigated MetS-induced fiber atrophy and fibrosis in the gastrocnemius muscle. EX had a positive effect on gastrocnemius metabolism by enhancing oxidative metabolism and, consequently, reducing susceptibility to fatigue. These findings reinforce the importance of prescribing EX programs to patients with MetS.
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Affiliation(s)
- Rita Nogueira-Ferreira
- UnIC@RISE, Department of Surgery and Physiology, Cardiovascular R&D Center, Faculty of Medicine of the University of Porto, Porto, Portugal.
| | - Inês Santos
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Rita Ferreira
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Dulce Fontoura
- UnIC@RISE, Department of Surgery and Physiology, Cardiovascular R&D Center, Faculty of Medicine of the University of Porto, Porto, Portugal
| | - Cláudia Sousa-Mendes
- UnIC@RISE, Department of Surgery and Physiology, Cardiovascular R&D Center, Faculty of Medicine of the University of Porto, Porto, Portugal
| | - Inês Falcão-Pires
- UnIC@RISE, Department of Surgery and Physiology, Cardiovascular R&D Center, Faculty of Medicine of the University of Porto, Porto, Portugal
| | - André Lourenço
- UnIC@RISE, Department of Surgery and Physiology, Cardiovascular R&D Center, Faculty of Medicine of the University of Porto, Porto, Portugal
| | - Adelino Leite-Moreira
- UnIC@RISE, Department of Surgery and Physiology, Cardiovascular R&D Center, Faculty of Medicine of the University of Porto, Porto, Portugal; Department of Cardiothoracic Surgery, Centro Hospitalar Universitário São João, Porto, Portugal
| | - Iola F Duarte
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Daniel Moreira-Gonçalves
- CIAFEL, Faculty of Sport, University of Porto, Porto, Portugal; ITR - Laboratory for Integrative and Translational Research in Population Health, Porto, Portugal.
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Metabolomics Profiling of Age-Associated Metabolites in Malay Population. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2023; 2023:4416410. [PMID: 36785791 PMCID: PMC9922189 DOI: 10.1155/2023/4416410] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 01/08/2023] [Accepted: 01/19/2023] [Indexed: 02/05/2023]
Abstract
Aging is a complex process characterized by progressive loss of functional abilities due to the accumulation of molecular damages. Metabolomics could offer novel insights into the predictors and mechanisms of aging. This cross-sectional study is aimed at identifying age-associated plasma metabolome in a Malay population. A total of 146 (90 females) healthy participants aged 28-69 were selected for the study. Untargeted metabolomics profiling was performed using liquid chromatography-tandem mass spectrometry. Association analysis was based on the general linear model. Gender-associated metabolites were adjusted for age, while age-associated metabolites were adjusted for gender or analyzed in a gender-stratified manner. Gender-associated metabolites such as 4-hydroxyphenyllactic acid, carnitine, cortisol, and testosterone sulfate showed higher levels in males than females. Deoxycholic acid and hippuric acid were among the metabolites with a positive association with age after being adjusted for gender, while 9(E),11(E)-conjugated linoleic acid, cortisol, and nicotinamide were negatively associated with age. In gender-stratified analysis, glutamine was one of the common metabolites that showed a direct association with age in both genders, while metabolites such as 11-deoxy prostaglandin F2β, guanosine monophosphate, and testosterone sulfate were inversely associated with age in males and females. This study reveals several age-associated metabolites in Malays that could reflect the changes in metabolisms during aging and may be used to discern the risk of geriatric syndromes and disorders later. Further studies are required to determine the interplay between these metabolites and environmental factors on the functional outcomes during aging.
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Peres FP, Levada-Pires AC, Vieira M, Hatanaka E, Cury-Boaventura MF, Folador A, Gorjão R, Hirabara SM, Santos-Silva PR, Deuster PA, Curi R, Pithon-Curi TC. Hydrolyzed whey protein enriched with glutamine dipeptide attenuates skeletal muscle damage and improves physical exhaustion test performance in triathletes. Front Sports Act Living 2023; 4:1011240. [PMID: 36685057 PMCID: PMC9853540 DOI: 10.3389/fspor.2022.1011240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 12/08/2022] [Indexed: 01/07/2023] Open
Abstract
Purpose To investigate the effects of hydrolyzed whey protein enriched with glutamine dipeptide on the percentage of oxygen consumption, second ventilatory threshold, duration and total distance covered, and skeletal muscle damage during an exhaustion test in elite triathletes. Methods The study was a randomized, double-blinded, placebo-controlled, crossover trial. Nine male triathletes performed a progressive incremental test on a treadmill ergometer (1.4 km h-1·3 min-1) 30 min after ingesting either 50 g of maltodextrin plus four tablets of 700 mg hydrolyzed whey protein enriched with 175 mg of glutamine dipeptide diluted in 250 ml of water (MGln) or four tablets of 700 mg maltodextrin plus 50 g maltodextrin diluted in 250 ml of water (M). Each athlete was submitted to the two dietary treatments and two corresponding exhaustive physical tests with an interval of one week between the interventions. The effects of the two treatments were then compared within the same athlete. Maximal oxygen consumption, percentage of maximal oxygen consumption, second ventilatory threshold, and duration and total distance covered were measured during the exhaustion test. Blood was collected before and immediately after the test for the determination of plasma lactate dehydrogenase (LDH) and creatine kinase (CK) activities and lactate concentration (also measured 6, 10, and 15 min after the test). Plasma cytokines (IL-6, IL-1β, TNF-α, IL-8, IL-10, and IL-1ra) and C-reactive protein levels were also measured. Results A single dose of MGln increased the percentage of maximal oxygen consumption, second ventilatory threshold duration, and total distance covered during the exhaustion test and augmented plasma lactate levels 6 and 15 min after the test. MGln also decreased plasma LDH and CK activities indicating muscle damage protection. Plasma cytokine and C-reactive protein levels did not change across the study periods. Conclusion Conditions including overnight fasting and a single dose of MGln supplementation resulted in exercising at a higher percentage of maximal oxygen consumption, a higher second ventilatory threshold, blood lactate levels, and reductions in plasma markers of muscle damage during an exhaustion test in elite triathletes. These findings support oral glutamine supplementation's efficacy in triathletes, but further studies require.
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Affiliation(s)
- Fabiano Pinheiro Peres
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo, Brazil
| | - Adriana Cristina Levada-Pires
- Institute of Physical Activity Sciences and Sports, Interdisciplinary Post-graduate Program in Health Sciences, Universidade Cruzeiro do Sul, São Paulo, Brazil,Correspondence: Adriana Cristina Levada-Pires
| | - Marcelo Vieira
- Institute of Physical Activity Sciences and Sports, Interdisciplinary Post-graduate Program in Health Sciences, Universidade Cruzeiro do Sul, São Paulo, Brazil
| | - Elaine Hatanaka
- Institute of Physical Activity Sciences and Sports, Interdisciplinary Post-graduate Program in Health Sciences, Universidade Cruzeiro do Sul, São Paulo, Brazil
| | - Maria Fernanda Cury-Boaventura
- Institute of Physical Activity Sciences and Sports, Interdisciplinary Post-graduate Program in Health Sciences, Universidade Cruzeiro do Sul, São Paulo, Brazil
| | - Alessandra Folador
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo, Brazil
| | - Renata Gorjão
- Institute of Physical Activity Sciences and Sports, Interdisciplinary Post-graduate Program in Health Sciences, Universidade Cruzeiro do Sul, São Paulo, Brazil
| | - Sandro Massao Hirabara
- Institute of Physical Activity Sciences and Sports, Interdisciplinary Post-graduate Program in Health Sciences, Universidade Cruzeiro do Sul, São Paulo, Brazil
| | - Paulo Roberto Santos-Silva
- Institute of Orthopedics and Traumatology, School of Medicine, Universidade de São Paulo, São Paulo, Brazil
| | - Patricia A. Deuster
- Department of Military and Emergency Medicine, Consortium for Health and Military Performance, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Rui Curi
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo, Brazil,Institute of Physical Activity Sciences and Sports, Interdisciplinary Post-graduate Program in Health Sciences, Universidade Cruzeiro do Sul, São Paulo, Brazil,Department of Military and Emergency Medicine, Consortium for Health and Military Performance, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Tania Cristina Pithon-Curi
- Institute of Physical Activity Sciences and Sports, Interdisciplinary Post-graduate Program in Health Sciences, Universidade Cruzeiro do Sul, São Paulo, Brazil,Department of Military and Emergency Medicine, Consortium for Health and Military Performance, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
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di Corcia M, Tartaglia N, Polito R, Ambrosi A, Messina G, Francavilla VC, Cincione RI, della Malva A, Ciliberti MG, Sevi A, Messina G, Albenzio M. Functional Properties of Meat in Athletes' Performance and Recovery. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:5145. [PMID: 35564540 PMCID: PMC9102337 DOI: 10.3390/ijerph19095145] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 04/19/2022] [Accepted: 04/20/2022] [Indexed: 12/30/2022]
Abstract
Physical activity (PA) and sport play an essential role in promoting body development and maintaining optimal health status both in the short and long term. Despite the benefits, a long-lasting heavy training can promote several detrimental physiological changes, including transitory immune system malfunction, increased inflammation, and oxidative stress, which manifest as exercise-induced muscle damages (EIMDs). Meat and derived products represent a very good source of bioactive molecules such as proteins, lipids, amino acids, vitamins, and minerals. Bioactive molecules represent dietary compounds that can interact with one or more components of live tissue, resulting in a wide range of possible health consequences such as immune-modulating, antihypertensive, antimicrobial, and antioxidative activities. The health benefits of meat have been well established and have been extensively reviewed elsewhere, although a growing number of studies found a significant positive effect of meat molecules on exercise performance and recovery of muscle function. Based on the limited research, meat could be an effective post-exercise food that results in favorable muscle protein synthesis and metabolic performance.
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Affiliation(s)
- Martina di Corcia
- Department of Agriculture, Food, Natural Resources and Engineering (DAFNE), University of Foggia, 71100 Foggia, Italy; (M.d.C.); (A.d.M.); (M.G.C.); (A.S.)
| | - Nicola Tartaglia
- Department of Medical and Surgical Sciences, University of Foggia, 71100 Foggia, Italy; (N.T.); (A.A.)
| | - Rita Polito
- Department of Clinical and Experimental Medicine, University of Foggia, 71100 Foggia, Italy; (R.P.); (R.I.C.)
| | - Antonio Ambrosi
- Department of Medical and Surgical Sciences, University of Foggia, 71100 Foggia, Italy; (N.T.); (A.A.)
| | - Gaetana Messina
- Department of Translational Medicine, Università degli Studi della Campania “Luigi Vanvitelli”, 80138 Naples, Italy;
| | | | - Raffaele Ivan Cincione
- Department of Clinical and Experimental Medicine, University of Foggia, 71100 Foggia, Italy; (R.P.); (R.I.C.)
| | - Antonella della Malva
- Department of Agriculture, Food, Natural Resources and Engineering (DAFNE), University of Foggia, 71100 Foggia, Italy; (M.d.C.); (A.d.M.); (M.G.C.); (A.S.)
| | - Maria Giovanna Ciliberti
- Department of Agriculture, Food, Natural Resources and Engineering (DAFNE), University of Foggia, 71100 Foggia, Italy; (M.d.C.); (A.d.M.); (M.G.C.); (A.S.)
| | - Agostino Sevi
- Department of Agriculture, Food, Natural Resources and Engineering (DAFNE), University of Foggia, 71100 Foggia, Italy; (M.d.C.); (A.d.M.); (M.G.C.); (A.S.)
| | - Giovanni Messina
- Department of Clinical and Experimental Medicine, University of Foggia, 71100 Foggia, Italy; (R.P.); (R.I.C.)
| | - Marzia Albenzio
- Department of Agriculture, Food, Natural Resources and Engineering (DAFNE), University of Foggia, 71100 Foggia, Italy; (M.d.C.); (A.d.M.); (M.G.C.); (A.S.)
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Impact of Exercise on Immunometabolism in Multiple Sclerosis. J Clin Med 2020; 9:jcm9093038. [PMID: 32967206 PMCID: PMC7564219 DOI: 10.3390/jcm9093038] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 09/15/2020] [Accepted: 09/18/2020] [Indexed: 02/06/2023] Open
Abstract
Multiple Sclerosis (MS) is a chronic, autoimmune condition characterized by demyelinating lesions and axonal degradation. Even though the cause of MS is heterogeneous, it is known that peripheral immune invasion in the central nervous system (CNS) drives pathology at least in the most common form of MS, relapse-remitting MS (RRMS). The more progressive forms’ mechanisms of action remain more elusive yet an innate immune dysfunction combined with neurodegeneration are likely drivers. Recently, increasing studies have focused on the influence of metabolism in regulating immune cell function. In this regard, exercise has long been known to regulate metabolism, and has emerged as a promising therapy for management of autoimmune disorders. Hence, in this review, we inspect the role of key immunometabolic pathways specifically dysregulated in MS and highlight potential therapeutic benefits of exercise in modulating those pathways to harness an anti-inflammatory state. Finally, we touch upon current challenges and future directions for the field of exercise and immunometabolism in MS.
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Pedersen KS, Gatto F, Zerahn B, Nielsen J, Pedersen BK, Hojman P, Gehl J. Exercise-Mediated Lowering of Glutamine Availability Suppresses Tumor Growth and Attenuates Muscle Wasting. iScience 2020; 23:100978. [PMID: 32240949 PMCID: PMC7114859 DOI: 10.1016/j.isci.2020.100978] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 01/15/2020] [Accepted: 03/09/2020] [Indexed: 01/01/2023] Open
Abstract
Glutamine is a central nutrient for many cancers, contributing to the generation of building blocks and energy-promoting signaling necessary for neoplastic proliferation. In this study, we hypothesized that lowering systemic glutamine levels by exercise may starve tumors, thereby contributing to the inhibitory effect of exercise on tumor growth. We demonstrate that limiting glutamine availability, either pharmacologically or physiologically by voluntary wheel running, significantly attenuated the growth of two syngeneic murine tumor models of breast cancer and lung cancer, respectively, and decreased markers of atrophic signaling in muscles from tumor-bearing mice. In continuation, wheel running completely abolished tumor-induced loss of weight and lean body mass, independently of the effect of wheel running on tumor growth. Moreover, wheel running abolished tumor-induced upregulation of muscular glutamine transporters and myostatin signaling. In conclusion, our data suggest that voluntary wheel running preserves muscle mass by counteracting muscular glutamine release and tumor-induced atrophic signaling.
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Affiliation(s)
- Katrine S Pedersen
- The Centre for Physical Activity Research (CFAS) and Centre of Inflammation and Metabolism (CIM), Copenhagen University Hospital, University of Copenhagen, 7641, 2200 Copenhagen, Denmark
| | - Francesco Gatto
- Department of Biology and Biological Engineering, Chalmers University of Technology, 412 96 Göteborg, Sweden; Elypta AB, Stockholm, Sweden
| | - Bo Zerahn
- Department of Clinical Physiology and Nuclear Medicine, Herlev and Gentofte University Hospital, 2730 Herlev, Denmark
| | - Jens Nielsen
- Department of Biology and Biological Engineering, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Bente K Pedersen
- The Centre for Physical Activity Research (CFAS) and Centre of Inflammation and Metabolism (CIM), Copenhagen University Hospital, University of Copenhagen, 7641, 2200 Copenhagen, Denmark
| | - Pernille Hojman
- The Centre for Physical Activity Research (CFAS) and Centre of Inflammation and Metabolism (CIM), Copenhagen University Hospital, University of Copenhagen, 7641, 2200 Copenhagen, Denmark
| | - Julie Gehl
- Center for Experimental Drug and Gene Electrotransfer (C∗EDGE), Department of Clinical Oncology and Palliative Care, Zealand University Hospital, Sygehusvej 10, 4000 Roskilde, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark; Department of Oncology, Herlev and Gentofte Hospital, University of Copenhagen, 2730 Herlev, Denmark.
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Nemati A, Alipanah-Moghadam R, Molazadeh L, Naghizadeh Baghi A. The Effect of Glutamine Supplementation on Oxidative Stress and Matrix Metalloproteinase 2 and 9 After Exhaustive Exercise. DRUG DESIGN DEVELOPMENT AND THERAPY 2019; 13:4215-4223. [PMID: 31849453 PMCID: PMC6912001 DOI: 10.2147/dddt.s218606] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 12/04/2019] [Indexed: 12/14/2022]
Abstract
Background Glutamine is the most abundant amino acid in plasma and skeletal muscles and an important fuel for immune system cells. It has beneficial anti-inflammatory and antioxidant properties which may be considered as a potentially useful supplement for athletes. The present study was conducted to investigate the effect of glutamine supplementation on oxidative stress and matrix metalloproteinase 2 and 9 after exhaustive exercise in young healthy males. Materials and methods In this study, 30 healthy males (supplement =15 and control=15) were randomly assigned into two groups. The supplement group received 0.3 g/kg BW of glutamine along with 25 gr of sugar dissolved in 250 cc water per day. The control group received 25 gr of sugar in 250 cc water per day. Fasting blood samples were taken at baseline and at the end of 14 days of intervention. The participants underwent exercise until experiencing full-body exhaustive fatigue for 16 ± 2.84 mins, and then fasting blood samples were taken. Serum levels of TAC, MDA, MMP2, MMP9, glutathione, and hs-CRP were measured. Results Serum levels of MDA and hs-CRP significantly decreased in the supplement group (p< 0.05). The serum level of TAC significantly increased in the supplement group (p< 0.05). Glutathione serum levels significantly increased after exhaustive exercise (p< 0.05). Serum levels of MMP2 and MMP9 remained unchanged. Conclusion Results of this study showed that, some biochemical factors are time-dependent and can increase or decrease over time, as well as, serum levels of hs-CRP and MDA decreased with glutamine supplementation along with the increase in the TAC serum levels, but this supplementation had no effect on serum levels of MMP2 and MMP9 in exhaustive exercise.
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Affiliation(s)
- Ali Nemati
- Ardabil University of Medical Sciences, School of Medicine, Department of Clinical Biochemistry, Ardabil, Iran
| | - Reza Alipanah-Moghadam
- Ardabil University of Medical Sciences, School of Medicine, Department of Clinical Biochemistry, Ardabil, Iran
| | - Leila Molazadeh
- Ardabil University of Medical Sciences, School of Medicine, Department of Clinical Biochemistry, Ardabil, Iran
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Santos SA, Lira FS, Silva ET, Caris AV, Oyama LM, Thomatieli-Santos RV. Effect of moderate exercise under hypoxia on Th1/Th2 cytokine balance. CLINICAL RESPIRATORY JOURNAL 2019; 13:583-589. [PMID: 31310707 DOI: 10.1111/crj.13061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 07/09/2018] [Accepted: 07/08/2019] [Indexed: 11/30/2022]
Abstract
INTRODUCTION AND OBJECTIVE Moderate exercise performed in normoxia can be immunostimulatory, while strenuous exercise can be immunosuppressive. However, less is known about the effects of exercise under hypoxia on cytokines. The aim of this study was to evaluate the effects of an acute exercise session performed under hypoxia similar to an altitude of 4200 m on cytokine balance. Our hypothesis was that exercise, even of moderate intensity, associated with hypoxia may induce different changes in relation to the normoxic condition. METHODS Eight healthy male volunteers were exercised on a treadmill for 1 hour at an intensity of 50% VO2peak under normoxic or hypoxic condition (4200 m). Blood samples were collected at rest and immediately 1 hour after the exercise, respectively to determine cytokines, hormones and metabolites. The two-way ANOVA and the Bonferroni post hoc test were used and the significance adopted was P < .05. RESULTS While IL-2, the IL-2/IL-4 ratio and glutamine decreased under hypoxia, IL-6 and IL-1ra increased. There were increases in the IL-2/IL-4 ratio, IL-6, IL-1ra and IL-10/TNF-α in normoxia. There were no differences in cortisol or glucose. CONCLUSION Moderate exercise under hypoxia condition changes the Th1/Th2 balance including IL-2, IL-4 and TNF-α cytokines, suggesting a Th2 response after 1 hour rest.
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Affiliation(s)
- Samile A Santos
- Department of Bioscience, Universidade Federal de São Paulo, Santos, Brazil
| | - Fábio S Lira
- Department of Physical Education, Universidade Estadual Paulista, Presidente Prudente, Brazil
| | - Edgar T Silva
- Department of Bioscience, Universidade Federal de São Paulo, Santos, Brazil
| | - Aline V Caris
- Department of Psychobiology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Lila M Oyama
- Department of Physiology, Universidade Federal de São Paulo, São Paulo, Brazil
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Batatinha HA, Biondo LA, Lira FS, Castell LM, Rosa-Neto JC. Nutrients, immune system, and exercise: Where will it take us? Nutrition 2019; 61:151-156. [DOI: 10.1016/j.nut.2018.09.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 09/29/2018] [Indexed: 11/15/2022]
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Pereira VAR, Vedovelli KS, Muller GY, Depieri YF, Avelar DHCG, de Amo AHE, Jimenes DR, Martins JNL, Silvério AC, Gomes CRG, Godoi VAF, Pedrosa MMD. Pros and cons of insulin administration on liver glucose metabolism in strength-trained healthy mice. ACTA ACUST UNITED AC 2019; 52:e7637. [PMID: 30698225 PMCID: PMC6345355 DOI: 10.1590/1414-431x20187637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 11/08/2018] [Indexed: 11/22/2022]
Abstract
Non-diabetic individuals use hormones like insulin to improve muscle strength and performance. However, as insulin also leads the liver and the adipose tissue to an anabolic state, the purpose of this study was to investigate the effects of insulin on liver metabolism in trained non-diabetic Swiss mice. The mice were divided into four groups: sedentary treated with saline (SS) or insulin (SI) and trained treated with saline (TS) or insulin (TI). Training was made in a vertical stair, at 90% of the maximum load, three times per week. Insulin (0.3 U/kg body weight) or saline were given intraperitoneally five times per week. After eight weeks, tissue and blood were collected and in situ liver perfusion with glycerol+lactate or alanine+glutamine (4 mM each) was carried out. The trained animals increased their muscle strength (+100%) and decreased body weight gain (–11%), subcutaneous fat (–42%), mesenteric fat (–45%), and peritoneal adipocyte size (–33%) compared with the sedentary groups. Insulin prevented the adipose effects of training (TI). The gastrocnemius muscle had greater density of muscle fibers (+60%) and less connective tissue in the trained groups. Liver glycogen was increased by insulin (SI +40% and TI +117%), as well as liver basal glucose release (TI +40%). Lactate and pyruvate release were reduced to a half by training. The greater gluconeogenesis from alanine+glutamine induced by training (TS +50%) was reversed by insulin (TI). Insulin administration had no additional effect on muscle strength and reversed some of the lipolytic and gluconeogenic effects of the resistance training. Therefore, insulin administration does not complement training in improving liver glucose metabolism.
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Affiliation(s)
- V A R Pereira
- Programa de Pós-Graduação em Ciências Fisiológicas, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - K S Vedovelli
- Especialização em Fisiologia Humana, Departamento de Ciências Fisiológicas, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - G Y Muller
- Graduação em Educação Física, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - Y F Depieri
- Graduação em Medicina, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - D H C G Avelar
- Graduação em Educação Física, Centro Metropolitano de Maringá, Maringá, PR, Brasil
| | - A H E de Amo
- Graduação em Ciências Biológicas, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - D R Jimenes
- Especialização em Anatomia e Fisiologia, Departamento de Ciências Morfológicas, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - J N L Martins
- Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - A C Silvério
- Graduação em Biotecnologia, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - C R G Gomes
- Departamento de Ciências Morfológicas, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - V A F Godoi
- Departamento de Ciências Fisiológicas, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - M M D Pedrosa
- Departamento de Ciências Fisiológicas, Universidade Estadual de Maringá, Maringá, PR, Brasil
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A sensitive single-enzyme assay system using the non-ribosomal peptide synthetase BpsA for measurement of L-glutamine in biological samples. Sci Rep 2017; 7:41745. [PMID: 28139746 PMCID: PMC5282505 DOI: 10.1038/srep41745] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 01/03/2017] [Indexed: 12/11/2022] Open
Abstract
The ability to rapidly, economically and accurately measure L-glutamine concentrations in biological samples is important for many areas of research, medicine or industry, however there is room for improvement on existing methods. We describe here how the enzyme BpsA, a single-module non-ribosomal peptide synthetase able to convert L-glutamine into the blue pigment indigoidine, can be used to accurately measure L-glutamine in biological samples. Although indigoidine has low solubility in aqueous solutions, meaning direct measurements of indigoidine synthesis do not reliably yield linear standard curves, we demonstrate that resolubilisation of the reaction end-products in DMSO overcomes this issue and that spontaneous reduction to colourless leuco-indigoidine occurs too slowly to interfere with assay accuracy. Our protocol is amenable to a 96-well microtitre format and can be used to measure L-glutamine in common bacterial and mammalian culture media, urine, and deproteinated plasma. We show that active BpsA can be prepared in high yield by expressing it in the apo-form to avoid the toxicity of indigoidine to Escherichia coli host cells, then activating it to the holo-form in cell lysates prior to purification; and that BpsA has a lengthy shelf-life, retaining >95% activity when stored at either −20 °C or 4 °C for 24 weeks.
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Selfish brain and selfish immune system interplay: A theoretical framework for metabolic comorbidities of mood disorders. Neurosci Biobehav Rev 2017; 72:43-49. [DOI: 10.1016/j.neubiorev.2016.11.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 10/06/2016] [Accepted: 11/16/2016] [Indexed: 12/17/2022]
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Abstract
Glutamine, reviewed extensively in the last century, is a key substrate for the splanchnic bed in the whole body and is a nutrient of particular interest in gastrointestinal research. A marked decrease in the plasma glutamine concentration has recently been observed in neonates and adults during acute illness and stress. Although some studies in newborns have shown parenteral and enteral supplementation with glutamine to be of benefit (by decreasing proteolysis and activating the immune system), clinical trials have not demonstrated prolonged advantages such as reductions in mortality or risk of infections in adults. In addition, glutamine is not able to combat the muscle wasting associated with disease or age-related sarcopenia. Oral glutamine supplementation initiated before advanced age in rats increases gut mass and improves the villus height of mucosa, thereby preventing the gut atrophy encountered in advanced age. Enterocytes from very old rats continuously metabolize glutamine into citrulline, which allowed, for the first time, the use of citrulline as a noninvasive marker of intestinal atrophy induced by advanced age.
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Affiliation(s)
- Dominique Meynial-Denis
- D. Meynial-Denis is with the Unit of Human Nutrition (UNH), French National Institute for Agricultural Research (INRA), Joint Research Unit (UMR) 1019, Center for Research in Human Nutrition (CRNH) Auvergne, Clermont-Ferrand, France.
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16
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Lee G, Khatib R. An unusual case of atrial fibrillation. Int Emerg Nurs 2016; 27:56-9. [PMID: 26872843 DOI: 10.1016/j.ienj.2016.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 01/17/2016] [Accepted: 01/28/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Geraldine Lee
- Department of Postgraduate Research, Florence Nightingale Faculty of Nursing & Midwifery, Kings College London, 57 Waterloo Road, London SE1 8WA, United Kingdom.
| | - Rani Khatib
- Medicines Management and Pharmacy Service, Leeds Teaching Hospitals NHS Trust, Great George St., Leeds LS1 3EX, United Kingdom
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Zhao L. Effect of nutritional diet improvement on the digestive system of intensive care unit patients. Shijie Huaren Xiaohua Zazhi 2015; 23:5728-5733. [DOI: 10.11569/wcjd.v23.i35.5728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effect of improvement of nutritional diet on the digestive system of intensive care unit (ICU) patients.
METHODS: One hundred and twenty-six ICU patients treated from January and December 2014 at our hospital were randomly divided into an observation group and a control group, with 63 cases in each group. All cases received early enteral nutrition through a nasogastric tube. Nutrition was used in the control group, while an improved nutritional diet, which mixed Sanku compound nutrition and protein nutrition at 2:1, was used in the observation group. The incidences of gastrointestinal complications such as diarrhea, constipation, and gastric retention, score of gastrointestinal function and patient's
satisfaction were compared between the two groups.
RESULTS: The incidences of diarrhea, constipation, and gastric retention after nasal feeding in the observation group were significantly lower than those in the control group (P < 0.05). The scores of gastrointestinal function on 3 and 7 d after nasal feeding in the observation group were significantly lower than those in the control group (P < 0.05). The patients' satisfaction and total satisfaction rate in the observation group were significantly better than those in the control group (P < 0.05).
CONCLUSION: Nutritional diet improvement in ICU patients could significantly reduce the risk of gastrointestinal dysfunction, promote the recovery of digestive system function, and improve the patients' satisfaction.
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Lymphocyte glucose and glutamine metabolism as targets of the anti-inflammatory and immunomodulatory effects of exercise. Mediators Inflamm 2014; 2014:326803. [PMID: 24987195 PMCID: PMC4060061 DOI: 10.1155/2014/326803] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 04/23/2014] [Accepted: 05/06/2014] [Indexed: 12/30/2022] Open
Abstract
Glucose and glutamine are important energetic and biosynthetic nutrients for T and B lymphocytes. These cells consume both nutrients at high rates in a function-dependent manner. In other words, the pathways that control lymphocyte function and survival directly control the glucose and glutamine metabolic pathways. Therefore, lymphocytes in different functional states reprogram their glucose and glutamine metabolism to balance their requirement for ATP and macromolecule production. The tight association between metabolism and function in these cells was suggested to introduce the possibility of several pathologies resulting from the inability of lymphocytes to meet their nutrient demands under a given condition. In fact, disruptions in lymphocyte metabolism and function have been observed in different inflammatory, metabolic, and autoimmune pathologies. Regular physical exercise and physical activity offer protection against several chronic pathologies, and this benefit has been associated with the anti-inflammatory and immunomodulatory effects of exercise/physical activity. Chronic exercise induces changes in lymphocyte functionality and substrate metabolism. In the present review, we discuss whether the beneficial effects of exercise on lymphocyte function in health and disease are associated with modulation of the glucose and glutamine metabolic pathways.
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Khorshidi-Hosseini M, Nakhostin-Roohi B. Effect of glutamine and maltodextrin acute supplementation on anaerobic power. Asian J Sports Med 2013; 4:131-6. [PMID: 23802055 PMCID: PMC3690733 DOI: 10.5812/asjsm.34495] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Accepted: 01/27/2013] [Indexed: 11/16/2022] Open
Abstract
Purpose The aim of this study was to investigate whether supplementation of carbohydrate together with peptide glutamine would prevent anaerobic power decrease during repeated competitions. Methods Twenty eight physical education male students voluntarily participated in the study. Subjects were randomly divided on a maximal power (Max power) output value basis into four groups: 1) G group (oral ingestion of glutamine at the dose of 0.25 g/kg body mass in 250 ml of water), 2) M group (a single carbohydrate at a concentration of 50g of maltodextrin in 250 ml of water), 3) GM group (carbohydrate at a concentration of 50g of maltodextrin + glutamine at the dose of 0.25 g/kg body mass in 250 ml of water) and, 4) P group (just 250 ml of water and 30 gram sweetener). Each subject performed three times Running-based Anaerobic Sprint Test (RAST) with intervals of 1 hour. Max power, Minimal power (Min power) and fatigue were calculated for each participant. Results There was a significant decrease in Max and Min power in P group in time series (P<0.05). Furthermore, regarding the Max and Min power, there was significant difference between P and GM group in third bout indicating stronger influence of combination of maltodextrin and glutamine in comparison with pure consumption of glutamine and maltodextrin (P< 0.05). Conclusions It seems acute supplementation of glutamine and maltodextrin combination, 2 hours before exercise is more efficient in prevention of anaerobic power decrease than consumption of a pure carbohydrate or glutamine in repeated bouts of RAST protocol. Thus, supplementation with both carbohydrate and peptide glutamine improved the physical performance of athletes during repeated competitions. Obviously, it is necessary to do further studies.
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Affiliation(s)
| | - Babak Nakhostin-Roohi
- Address: Department of Exercise Physiology, Ardabil Branch, Islamic Azad University, Ardabil, Iran.
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Importance of exercise immunology in health promotion. Amino Acids 2010; 41:1165-72. [PMID: 20976509 DOI: 10.1007/s00726-010-0786-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2010] [Accepted: 10/07/2010] [Indexed: 02/04/2023]
Abstract
Chronic physical exercise with adequate intensity and volume associated with sufficient recovery promotes adaptations in several physiological systems. While intense and exhaustive exercise is considered an important immunosuppressor agent and increases the incidence of upper respiratory tract infections (URTI), moderate regular exercise has been associated with significant disease protection and is a complementary treatment of many chronic diseases. The effects of chronic exercise occur because physical training can induce several physiological, biochemical and psychological adaptations. More recently, the effect of acute exercise and training on the immunological system has been discussed, and many studies suggest the importance of the immune system in prevention and partial recovery in pathophysiological situations. Currently, there are two important hypotheses that may explain the effects of exercise and training on the immune system. These hypotheses including (1) the effect of exercise upon hormones and cytokines (2) because exercise can modulate glutamine concentration. In this review, we discuss the hypothesis that exercise may modulate immune functions and the importance of exercise immunology in respect to chronic illnesses, chronic heart failure, malnutrition and inflammation.
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Purvis D, Gonsalves S, Deuster PA. Physiological and Psychological Fatigue in Extreme Conditions: Overtraining and Elite Athletes. PM R 2010; 2:442-50. [DOI: 10.1016/j.pmrj.2010.03.025] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Accepted: 03/21/2010] [Indexed: 11/26/2022]
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