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Jin X, Chen Y, Xu B, Tian H. Exercise-Mediated Protection against Air Pollution-Induced Immune Damage: Mechanisms, Challenges, and Future Directions. BIOLOGY 2024; 13:247. [PMID: 38666859 PMCID: PMC11047937 DOI: 10.3390/biology13040247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/29/2024] [Accepted: 04/03/2024] [Indexed: 04/28/2024]
Abstract
Air pollution, a serious risk factor for human health, can lead to immune damage and various diseases. Long-term exposure to air pollutants can trigger oxidative stress and inflammatory responses (the main sources of immune impairment) in the body. Exercise has been shown to modulate anti-inflammatory and antioxidant statuses, enhance immune cell activity, as well as protect against immune damage caused by air pollution. However, the underlying mechanisms involved in the protective effects of exercise on pollutant-induced damage and the safe threshold for exercise in polluted environments remain elusive. In contrast to the extensive research on the pathogenesis of air pollution and the preventive role of exercise in enhancing fitness, investigations into exercise resistance to injury caused by air pollution are still in their infancy. In this review, we analyze evidence from humans, animals, and cell experiments on the combined effects of exercise and air pollution on immune health outcomes, with an emphasis on oxidative stress, inflammatory responses, and immune cells. We also propose possible mechanisms and directions for future research on exercise resistance to pollutant-induced damage in the body. Furthermore, we suggest strengthening epidemiological studies at different population levels and investigations on immune cells to guide how to determine the safety thresholds for exercise in polluted environments.
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Affiliation(s)
| | | | - Bingxiang Xu
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China; (X.J.); (Y.C.)
| | - Haili Tian
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China; (X.J.); (Y.C.)
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2
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Lacerda DR, Nunes-Silva A, Silveira ALM, Costa KA, Rodrigues DF, Moraes MM, Pinho V, Menezes GB, Teixeira MM, Wanner SP, Soares DD, Ferreira AVM. Acute exercise modulates the inflammatory response in adipose tissue in both lean and obese mice. Nutrition 2023; 115:112092. [PMID: 37549454 DOI: 10.1016/j.nut.2023.112092] [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: 12/09/2022] [Revised: 03/01/2023] [Accepted: 05/19/2023] [Indexed: 08/09/2023]
Abstract
OBJECTIVES Acute physical exercise acts as a metabolic stressor, promoting activation of the immune system, and this response could be relevant in the adipose tissue remodeling process. In addition, some cytokines have important functions in lipolysis. Because chronic exercise improves obesity-related metabolic and inflammatory dysfunction, herein we investigated the effect of acute exercise on the inflammatory responses in the adipose tissues of lean and obese mice. METHODS Lean mice were fed a standard chow diet, whereas obese mice were fed a high-refined carbohydrate diet for 8 wk. Both groups were subjected to 60 min of moderate-intensity exercise. RESULTS In the epididymal adipose tissue of lean mice, exercise enhanced interleukin (IL)-6 and tumor necrosis factor-α levels, which correlated positively with increased serum free fatty acid concentrations. In vivo confocal imaging of epididymal adipose tissue vessels revealed higher recruitment of neutrophils after exercise. Also, the number of leukocytes expressing CD11b+F480- was elevated 6 h after exercise. Similarly, the chemokine (C-X-C motif) ligand 1 level increased at 6 h and remained high until 24 h after exercise. Myeloperoxidase activity was increased at 6, 12, and 24 h after exercise. Surprisingly, however, no changes were observed in epididymal adipose tissue from obese mice, considering proinflammatory cytokines (IL-6 and tumor necrosis factor-α). On the other hand, IL-13, IL-4, and IL-10 levels were higher in obese mice after exercise. CONCLUSIONS These data suggest that acute exercise promotes an inflammatory response in the adipose tissue of lean mice that is observed as part of its role in adipose tissue remodeling. In contrast, acute exercise promotes an antiinflammatory response in adipose tissue from obese mice, likely as an important tool for restoring homeostasis.
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Affiliation(s)
- Débora Romualdo Lacerda
- Department of Nutrition, Nursing School, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Albená Nunes-Silva
- Department of Physical Education, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil.
| | | | - Kátia Anunciação Costa
- Department of Nutrition, Nursing School, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Débora Fernandes Rodrigues
- Department of Nutrition, Nursing School, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Michele Macedo Moraes
- Department of Physical Education, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Vanessa Pinho
- Department of Morphology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Gustavo Batista Menezes
- Department of Morphology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mauro Martins Teixeira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Samuel Penna Wanner
- Department of Physical Education, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Danusa Dias Soares
- Department of Physical Education, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Lino RDS, Silva MSDP, de Jesus DS, de Macedo RC, Lagares LS, dos Santos FNA, de Almeida LAB, Bomfim ES, dos Santos CPC. Molecular aspects of COVID-19 and its relationship with obesity and physical activity: a narrative review. SAO PAULO MED J 2023; 141:78-86. [PMID: 36102458 PMCID: PMC9808989 DOI: 10.1590/1516-3180.2021.1038.r1.06072022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 07/06/2022] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Severe acute respiratory syndrome coronavirus 2 has several mechanisms of action related to inflammatory responses, especially in individuals diagnosed with obesity. This hyperinflammatory clinical profile resulting from the association between obesity and coronavirus disease 2019 (COVID-19) may be attenuated by regular physical activity. OBJECTIVE The aim of this study was to review the evidence on the consequences of physical inactivity and physical activity on COVID-19 in patients with obesity. DESIGN AND SETTING Narrative review at the Bahiana School of Medicine and Public Health in Salvador, Brazil. METHODS We searched evidence on the association of COVID-19 with physical activity and obesity using the following keywords: "covid-19," "physical activity," and "obesity". The databases used were MEDLINE (PubMed), ScienceDirect, and Virtual Health Library. Studies published from 2019 to 2021 and available in Portuguese, English, and Spanish were included. The final search was conducted on September 26, 2021. RESULTS We identified 661 studies in the database, among which 71 were considered for inclusion in the narrative review of the molecular aspects of COVID-19 and its relationship with physical activity and obesity. CONCLUSION This literature review enabled the perception of the relationship between the molecular mechanisms of COVID-19 and obesity. Regular physical activity had various benefits for the inflammatory condition of the studied population, highlighting moderate-intensity.
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Affiliation(s)
- Ramon de Souza Lino
- BSc. Physical Education Professional, Research Group on Metabolic Diseases, Physical Exercise and Health Technologies, Escola Bahiana de Medicina e Saúde Pública (EBMSP), Salvador (BA), Brazil
| | - Mariana Sousa de Pina Silva
- Undergraduate Student, Research Group on Metabolic Diseases, Physical Exercise, and Health Technologies, Escola Bahiana de Medicina e Saúde Pública (EBMSP), Salvador (BA), Brazil
| | - Daniel Simões de Jesus
- PhD. Assistant Professor, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Rodrigo Colares de Macedo
- Undergraduate Student, Research Group on Metabolic Diseases, Physical Exercise and Health Technologies, Escola Bahiana de Medicina e Saúde Pública (EBMSP), Salvador (BA), Brazil
| | - Laura Souza Lagares
- BSc. Physical Education Professional, Research Group on Metabolic Diseases, Physical Exercise and Health Technologies, Escola Bahiana de Medicina e Saúde Pública (EBMSP), Salvador (BA), Brazil
| | - Felipe Nunes Almeida dos Santos
- BSc. Physical Education Professional, Research Group on Metabolic Diseases, Physical Exercise and Health Technologies, Escola Bahiana de Medicina e Saúde Pública (EBMSP), Salvador (BA), Brazil
| | - Luiz Alberto Bastos de Almeida
- MSc. Assistant Professor, Laboratory of Physical Activity, Universidade Estadual de Feira de Santana (UEFS), Feira de Santana (BA), Brazil
| | - Eric Simas Bomfim
- BSc. Physical Education Professional, Research Group on Metabolic Diseases, Physical Exercise and Health Technologies, Escola Bahiana de Medicina e Saúde Pública (EBMSP), Salvador (BA), Brazil
| | - Clarcson Plácido Conceição dos Santos
- PhD. Assistant Professor, Research Group on Metabolic Diseases, Physical Exercise and Health Technologies, Escola Bahiana de Medicina e Saúde Pública (EBMSP), Salvador (BA), Brazil
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Costa-Beber LC, Heck TG, Fiorin PBG, Ludwig MS. HSP70 as a biomarker of the thin threshold between benefit and injury due to physical exercise when exposed to air pollution. Cell Stress Chaperones 2021; 26:889-915. [PMID: 34677749 PMCID: PMC8578518 DOI: 10.1007/s12192-021-01241-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 09/25/2021] [Accepted: 09/27/2021] [Indexed: 12/15/2022] Open
Abstract
Physical exercise has acute and chronic effects on inflammatory balance, metabolic regulation, and redox status. Exercise-induced adaptations are mediated by enhanced 70-kDa heat shock protein (HSP70) levels and an improved heat shock response (HSR). Therefore, exercise could be useful against disease conditions [obesity, diabetes mellitus (DM), and exposure to atmospheric pollutants] marked by an impaired HSR. However, exercise performed by obese or diabetic subjects under pollution conditions might also be dangerous at certain intensities. Intensity correlates with an increase in HSP70 levels during physical exercise until a critical point at which the effort becomes harmful and impairs the HSR. Establishing a unique biomarker able to indicate the exercise intensity on metabolism and cellular fatigue is essential to ensure adequate and safe exercise recommendations for individuals with obesity or DM who require exercise to improve their metabolic status and live in polluted regions. In this review, we examined the available evidence supporting our hypothesis that HSP70 could serve as a biomarker for determining the optimal exercise intensity for subjects with obesity or diabetes when exposed to air pollution and establishing the fine threshold between anti-inflammatory and pro-inflammatory exercise effects.
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Affiliation(s)
- Lílian Corrêa Costa-Beber
- Research Group in Physiology, Postgraduate Program in Integral Attention to Health, Department of Life Sciences, Regional University of Northwestern State's Rio Grande do Sul (UNIJUI), Rua do Comercio, 3000 - Bairro Universitario -, Ijuí, RS, 98700-000, Brazil.
- Postgraduation Program in Integral Attention to Health (PPGAIS-UNIJUI/UNICRUZ), Ijuí, RS, Brazil.
| | - Thiago Gomes Heck
- Research Group in Physiology, Postgraduate Program in Integral Attention to Health, Department of Life Sciences, Regional University of Northwestern State's Rio Grande do Sul (UNIJUI), Rua do Comercio, 3000 - Bairro Universitario -, Ijuí, RS, 98700-000, Brazil
- Postgraduation Program in Integral Attention to Health (PPGAIS-UNIJUI/UNICRUZ), Ijuí, RS, Brazil
| | - Pauline Brendler Goettems Fiorin
- Research Group in Physiology, Postgraduate Program in Integral Attention to Health, Department of Life Sciences, Regional University of Northwestern State's Rio Grande do Sul (UNIJUI), Rua do Comercio, 3000 - Bairro Universitario -, Ijuí, RS, 98700-000, Brazil
| | - Mirna Stela Ludwig
- Research Group in Physiology, Postgraduate Program in Integral Attention to Health, Department of Life Sciences, Regional University of Northwestern State's Rio Grande do Sul (UNIJUI), Rua do Comercio, 3000 - Bairro Universitario -, Ijuí, RS, 98700-000, Brazil
- Postgraduation Program in Integral Attention to Health (PPGAIS-UNIJUI/UNICRUZ), Ijuí, RS, Brazil
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Improta-Caria AC, Soci ÚPR, Pinho CS, Aras Júnior R, De Sousa RAL, Bessa TCB. Physical Exercise and Immune System: Perspectives on the COVID-19 pandemic. ACTA ACUST UNITED AC 2021; 67Suppl 1:102-107. [PMID: 34259761 DOI: 10.1590/1806-9282.67.suppl1.20200673] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 10/21/2020] [Indexed: 11/21/2022]
Abstract
Physical exercise training (PET) has been considered an excellent non-pharmacological strategy to prevent and treat several diseases. There are various benefits offered by PET, especially on the immune system, promoting changes in the morphology and function of cells, inducing changes in the expression pattern of pro and anti-inflammatory cytokines. However, these changes depend on the type, volume and intensity of PET and whether it is being evaluated acutely or chronically. In this context, PET can be a tool to improve the immune system and fight various infections. However, the current COVID-19 pandemic, caused by SARS-CoV-2, which produces cytokine storm, inducing inflammation in several organs, with high infection rates in both sedentary and physically active individuals, the role of PET on immune cells has not yet been elucidated. Thus, this review focused on the role of PET on immune system cells and the possible effects of PET-induced adaptive responses on SARS-CoV-2 infection and COVID-19.
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Affiliation(s)
- Alex Cleber Improta-Caria
- Universidade Federal da Bahia, Faculdade de Medicina, Programa de Pós-Graduação em Medicina e Saúde - Salvador (BA), Brazil.,Sociedade Brasileira de Cardiologia, Departamento de Educação Física em Cardiologia - Salvador (BA), Brazil
| | - Úrsula Paula Renó Soci
- Universidade de São Paulo, Escola de Educação Física e Esporte, Laboratório de Bioquímica e Biologia Molecular do Exercício - São Paulo (SP), Brazil
| | - Cristiano Silva Pinho
- Universidade Federal da Bahia, Faculdade de Medicina, Programa de Pós-Graduação em Medicina e Saúde - Salvador (BA), Brazil.,União de Faculdades de Alagoas e Faculdade Figueiredo Costa - Maceió (AL), Brazil
| | - Roque Aras Júnior
- Universidade Federal da Bahia, Faculdade de Medicina, Programa de Pós-Graduação em Medicina e Saúde - Salvador (BA), Brazil
| | - Ricardo Augusto Leoni De Sousa
- Universidade Federal dos Vales do Jequitinhonha e Mucuri, Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas - Diamantina (MG), Brazil
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Differential effects of whole blood heat treatment on the ex vivo inflammatory profile of untrained and trained men. Cytokine 2021; 142:155514. [PMID: 33812764 DOI: 10.1016/j.cyto.2021.155514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 03/20/2021] [Accepted: 03/22/2021] [Indexed: 11/20/2022]
Abstract
This study evaluated the effects of heat stress on the ex vivo inflammatory profile in untrained and trained men. Whole blood samples from untrained (UT) and trained (TR) individuals were incubated for 2 h at 37 °C or 40 °C. The whole blood of a subsample of the participants (n = 5 in both TR and UT groups) were stimulated with lipopolysaccharide (LPS, 10 ng/mL) concomitant to heat treatment (37 °C versus 40 °C). Flow cytometry was used to assess the intracellular NF-κB activation in CD4+ T cells and CD14+ monocytes, the expression of Toll-Like Receptor-4 (TLR-4), the frequencies of CD4+CD25-CD39+ and CD4+CD25+CD39+ T cells and monocyte subsets (CD14+CD16-; CD14+CD16+; CD14-CD16+), the mitochondrial membrane potential (MMP) and the reactive oxygen species (ROS) production by lymphocytes and monocytes. The production of interleukin (IL)-6, IL-10, and tumor necrosis factor-alpha (TNF-α) by LPS-stimulated whole blood were also evaluated. Heat treatment (40 °C) increased the proportions of CD14+CD16- and CD14+CD16+ monocytes and the lymphocyte MMP in the UT group. The frequencies of CD14-CD16+ monocytes and the activation of NF-κB in CD14+ monocytes decreased in UT and TR groups after heat treatment, while a reduction in CD4+CD25-CD39+ T-cells was observed only in the UT group. Higher TLR-4 and NF-κB activation were found in LPS-stimulated monocytes of UT men concomitant with higher TNF-α production and diminished IL-10 production after heat treatment. TR individuals presented lower NF- κB activation in LPS-stimulated monocytes after heat treatment. Our data suggest that the training status of individuals may impact on the anti-inflammatory response of heat treatment.
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Gutierrez LLP, Marques CV, Scomazzon SP, Schroeder HT, Fernandes JR, da Silva Rossato J, Homem de Bittencourt PI. A-family anti-inflammatory cyclopentenone prostaglandins: A novel class of non-statin inhibitors of HMG-CoA reductase. Biochimie 2021; 182:37-50. [PMID: 33412161 DOI: 10.1016/j.biochi.2020.12.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 12/11/2020] [Accepted: 12/28/2020] [Indexed: 11/25/2022]
Abstract
Disruption of the intracellular lipid balance leading to cholesterol accumulation is one of the features of cells that participate in the development of atherosclerotic lesions. Evidence form our laboratory indicates that anti-inflammatory cyclopentenone prostaglandins (cyPGs) of A- and J-family deviate lipid metabolism from the synthesis of cholesterol and cholesteryl esters to the synthesis of phospholipids in foam-cell macrophages. cyPGs possessing an α,β-unsaturated cyclopentane ring are highly electrophilic substances able to promptly react with reactive cysteines of intracellular molecules through Michael addition. On the other hand, HMG-CoA reductase (HMGCR), the enzyme responsible for the rate-limiting step in cholesterol biosynthesis, presents critically reactive cysteines at the entry of catalytic domain, particularly Cys561, that could be target of cyPG inhibition. In the present study, we showed that cyPGs (but not other non-α,β-unsaturated PGs) physically interact with HMGCR, in a dithiothreitol- and β-mercaptoethanol-sensitive way, and block the activity of the catalytic subunit of the enzyme (IC50 for PGA2 = 0.17 μM). PGA2 inhibits HMGCR activity in cultured rat and human macrophages/macrophage-foam cells and leads to enhanced expression of HMGCR protein, as observed with statins. In cell culture models, PGA2 effectively inhibits the reductase at non-toxic doses (e.g., 1 μM) that block cell proliferation thus suggesting that part of the well-known antiproliferative effect of PGA2 may be due to its ability of blocking HMGCR activity, as cells cannot proliferate without a robust cholesterogenesis. Therefore, besides the powerfully anti-inflammatory and antiproliferative effects, the anticholesterogenic effects of PGA2 should be exploited in atherosclerosis therapeutics.
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Affiliation(s)
- Lucila Ludmila Paula Gutierrez
- Department of Basic Health Sciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, RS, 90050-170, Brazil; Laboratory of Cellular Physiology (FisCel), Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
| | - Claudia Vieira Marques
- Laboratory of Cellular Physiology (FisCel), Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
| | - Sofia Pizzato Scomazzon
- Laboratory of Cellular Physiology (FisCel), Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
| | - Helena Trevisan Schroeder
- Laboratory of Cellular Physiology (FisCel), Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
| | - João Roberto Fernandes
- Laboratory of Cellular Physiology (FisCel), Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
| | - Juliane da Silva Rossato
- Laboratory of Cellular Physiology (FisCel), Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
| | - Paulo Ivo Homem de Bittencourt
- Laboratory of Cellular Physiology (FisCel), Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil.
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Bittencourt A, Schroeder HT, Porto RR, de Lemos Muller CH, Krause M, Homem de Bittencourt PI. Heat shock response to exercise in pancreatic islets of obese mice. Biochimie 2019; 168:28-40. [PMID: 31678111 DOI: 10.1016/j.biochi.2019.10.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 10/27/2019] [Indexed: 12/18/2022]
Abstract
Chronic obesity imposes an organismal state of low-grade inflammation because the physiological resolution of inflammation is progressively repressed giving rise to cellular senescence and its accompanying Senescence-Associated Secretory Phenotype (SASP), which avoids apoptosis but perpetuates the relay of inflammatory signals from adipose tissue toward the rest of the body. Conversely, resolution of inflammation depends on the integrity of heat shock response (HSR) pathway that leads to the expression of cytoprotective and anti-inflammatory protein chaperones of the 70 kDa family (HSP70). However, chronic exposure to the aforementioned injuring factors leads to SASP, which, in turn, suppresses the HSR. A main metabolic tissue severely jeopardized by obesity-related dysfunctions is the endocrine pancreas, particularly β-cells of the islets of Langerhans. Because exercise is a powerful inducer of HSR and predicted to alleviate negative health outcomes of obesity, we sought whether obesity influence HSP70 expression in pancreatic islets and other metabolic tissues (adipose tissue and skeletal muscle) of adult B6.129SF2/J mice fed on a high-fat diet (HFD) for 13 weeks since the weaning and whether acute exercise as well as moderate-intensity exercise training (8 weeks) could interfere with this scenario. We showed that acute exercise of moderate intensity protects pancreatic islets against cytokine-induced cell death. In addition, acute exercise challenge time-dependently increased islet HSP70 that peaked at 12 h post-exercise in both trained and untrained mice fed on a control diet, suggesting an adequate HSR to exercise training. Unexpectedly, however, neither exercise training nor acute exercise challenges were able to increase islet HSP70 contents in trained mice submitted to HFD, but only in untrained HFD animals. In parallel, HFD disrupted glycemic status which is accompanied by loss of muscular mass resembling sarcopenic obesity that could not be rescued by exercise training. These results suggest that exercise influences HSR in pancreatic islets but obesity undermines islet, muscle and adipose tissue HSR, which is associated with metabolic abnormalities observed in such tissues.
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Affiliation(s)
- Aline Bittencourt
- Laboratory of Cellular Physiology (FisCel) and Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX), Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Helena Trevisan Schroeder
- Laboratory of Cellular Physiology (FisCel) and Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX), Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Rossana Rosa Porto
- Laboratory of Cellular Physiology (FisCel) and Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX), Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Carlos Henrique de Lemos Muller
- Laboratory of Cellular Physiology (FisCel) and Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX), Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Mauricio Krause
- Laboratory of Cellular Physiology (FisCel) and Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX), Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Paulo Ivo Homem de Bittencourt
- Laboratory of Cellular Physiology (FisCel) and Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX), Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
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Trussardi Fayh AP, de Carvalho Gomes C, Schroeder HT, Henrique de Lemos Muller C, Maria de Araújo Moura Lemos T, Krause M. Induction chemotherapy reduces extracellular heat shock protein 72 levels, inflammation, lipoperoxidation and changes insulin sensitivity in children and adolescents newly diagnosed with acute lymphoblastic leukemia. Oncotarget 2018; 9:28784-28795. [PMID: 29983896 PMCID: PMC6033368 DOI: 10.18632/oncotarget.25609] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 05/19/2018] [Indexed: 02/03/2023] Open
Abstract
Background Acute lymphoblastic leukemia (ALL) is associated with higher levels of pro-inflammatory cytokines and oxidative stress. Recently, the levels of extracellular heat shock protein 72 (eHSP72) were found to be elevated in ALL, and its elevation associated with poor prognosis. Therefore, considering the possible role of eHSP72 as a modulator of the immunological system and metabolism, the aim of this study was to describe the response of eHSP72 to the induction phase of chemotherapy, along with metabolic, inflammatory and oxidative stress markers, in children and adolescents newly diagnosed with ALL. Methods Nineteen patients were recruited and analysed before and after the induction phase of chemotherapy (with 28 days of duration). Blood samples were taken for the analysis of C-reactive protein (CRP), levels of lipoperoxidation, insulin (and HOMA-IR), cortisol, glucose, lipid profile and eHSP72. Results We found that induction phase of chemotherapy leads to a drop in glucose levels (from 101.79±19 to 75.8±9.7 mg/dL), improvements on inflammation (CRP levels, p<0.01) and oxidative stress (TBARS levels, p<0.01), reduction on eHSP72 (p=0.03) and improved insulin sensitivity (HOMA-IR, p=0.02). Conclusion Our results indicate that eHSP72 may have an immune and metabolic role and could be used as a marker of the treatment success and metabolic changes in children with ALL.
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Affiliation(s)
- Ana Paula Trussardi Fayh
- Departamento de Nutrição, Centro de Ciências da Saúde, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
| | - Camila de Carvalho Gomes
- Departamento de Nutrição, Centro de Ciências da Saúde, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
| | - Helena Trevisan Schroeder
- Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Carlos Henrique de Lemos Muller
- Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Telma Maria de Araújo Moura Lemos
- Departamento de Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
| | - Mauricio Krause
- Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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Barcelos RP, Bresciani G, Cuevas MJ, Martínez-Flórez S, Soares FAA, González-Gallego J. Diclofenac pretreatment modulates exercise-induced inflammation in skeletal muscle of rats through the TLR4/NF-κB pathway. Appl Physiol Nutr Metab 2017; 42:757-764. [DOI: 10.1139/apnm-2016-0593] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Nonsteroidal anti-inflammatory drugs, such as diclofenac, are widely used to treat inflammation and pain in several conditions, including sports injuries. This study analyzes the influence of diclofenac on the toll-like receptor-nuclear factor kappa B (TLR-NF-κB) pathway in skeletal muscle of rats submitted to acute eccentric exercise. Twenty male Wistar rats were divided into 4 groups: control-saline, control-diclofenac, exercise-saline, and exercise-diclofenac. Diclofenac or saline were administered for 7 days prior to an acute eccentric exercise bout. The inflammatory status was evaluated through mRNA levels of cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS), interleukin-6 (IL-6), IL-1β, and tumor necrosis factor alpha (TNF-α), and protein content of COX-2, IL-6, and TNF-α in vastus lateralis muscle. Data obtained showed that a single bout of eccentric exercise significantly increased COX-2 gene expression. Similarly, mRNA expression and protein content of other inflammation-related genes also increased after the acute exercise. However, these effects were attenuated in the exercise + diclofenac group. TLR4, myeloid differentiation primary response gene 88 (MyD88), and p65 were also upregulated after the acute eccentric bout and the effect was blunted by the anti-inflammatory drug. These findings suggest that pretreatment with diclofenac may represent an effective tool to ameliorate the pro-inflammatory status induced by acute exercise in rat skeletal muscle possibly through an attenuation of the TLR4-NF-κB signaling pathway.
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Affiliation(s)
- Rômulo Pillon Barcelos
- Programa de Pós-graduação em Bioexperimentação, Universidade de Passo Fundo, RS, 99052-900, Brazil
- Institute of Biomedicine, University of León, Campus Universitario, 24071 León, Spain
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900 Brazil
| | - Guilherme Bresciani
- Grupo de Investigación en Rendimiento Físico y Salud Escuela de Educación Física, Pontificia Universidad Católica de Valparaiso, Valparaiso, 2530388 Chile
| | - Maria José Cuevas
- Institute of Biomedicine, University of León, Campus Universitario, 24071 León, Spain
| | | | - Félix Alexandre Antunes Soares
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
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Lee S, Hashimoto J, Suzuki T, Satoh A. The effects of exercise load during development on oxidative stress levels and antioxidant potential in adulthood. Free Radic Res 2017; 51:179-186. [PMID: 28166650 DOI: 10.1080/10715762.2017.1291939] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The objective of this study was to elucidate the impact of physical activity during the growth period as well as on oxidative stress and antioxidative potential in adulthood. The experimental animals used were four-week old male Wistar rats, which were randomly divided into three groups. The exercise loads were as follows: control (CON), treadmill exercise (TE), and jumping exercise (JE). The exercise was performed at the same time of day, at a frequency of five days per week, for eight weeks. Derivatives of reactive oxygen metabolites (d-ROSs) and biological antioxidant potential (BAP) were measured during periods of rest prior to commencement of the experiment and after the experiment. Analysis was conducted using a Wilcoxon signed-rank test and Schaffer's multiple comparison procedure and the significance level was set at p < 0.05. The percent increase in d-ROM levels in the JE group, which experienced short-duration intense exercise loads, was higher than that in the TE group, which experienced moderately intense exercise loads. However, BAP, which is an index of antioxidant potential, markedly decreased in adulthood in the CON group, as compared to that in the developmental period, whereas the exercise groups showed no notable changes in BAP levels. Oxidative stress levels and antioxidant potential are affected differently in adulthood, depending on the intensity of sustained exercise loads experienced during development. Results suggested that in order to increase antioxidant potential, while taking oxidative stress production into account, moderately intense exercise loads are more desirable than highly intense exercise loads.
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Affiliation(s)
- S Lee
- a Department of Physical Therapy , Aomori University of Health and Welfare , Aomori-shi , Japan
| | - J Hashimoto
- a Department of Physical Therapy , Aomori University of Health and Welfare , Aomori-shi , Japan
| | - T Suzuki
- a Department of Physical Therapy , Aomori University of Health and Welfare , Aomori-shi , Japan
| | - A Satoh
- b Department of Nursing , Hirosaki University of Health and Welfare , Hirosaki-shi , Japan
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12
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Pillon Barcelos R, Freire Royes LF, Gonzalez-Gallego J, Bresciani G. Oxidative stress and inflammation: liver responses and adaptations to acute and regular exercise. Free Radic Res 2017; 51:222-236. [PMID: 28166653 DOI: 10.1080/10715762.2017.1291942] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The liver is remarkably important during exercise outcomes due to its contribution to detoxification, synthesis, and release of biomolecules, and energy supply to the exercising muscles. Recently, liver has been also shown to play an important role in redox status and inflammatory modulation during exercise. However, while several studies have described the adaptations of skeletal muscles to acute and chronic exercise, hepatic changes are still scarcely investigated. Indeed, acute intense exercise challenges the liver with increased reactive oxygen species (ROS) and inflammation onset, whereas regular training induces hepatic antioxidant and anti-inflammatory improvements. Acute and regular exercise protocols in combination with antioxidant and anti-inflammatory supplementation have been also tested to verify hepatic adaptations to exercise. Although positive results have been reported in some acute models, several studies have shown an increased exercise-related stress upon liver. A similar trend has been observed during training: while synergistic effects of training and antioxidant/anti-inflammatory supplementations have been occasionally found, others reported a blunting of relevant adaptations to exercise, following the patterns described in skeletal muscles. This review discusses current data regarding liver responses and adaptation to acute and regular exercise protocols alone or combined with antioxidant and anti-inflammatory supplementation. The understanding of the mechanisms behind these modulations is of interest for both exercise-related health and performance outcomes.
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Affiliation(s)
- Rômulo Pillon Barcelos
- a Instituto de Ciências Biológicas , Universidade de Passo Fundo , Passo Fundo , Brazil.,b Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica (PPGBTOx) , Universidade Federal de Santa Maria (UFSM) , Santa Maria , Brazil
| | - Luiz Fernando Freire Royes
- b Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica (PPGBTOx) , Universidade Federal de Santa Maria (UFSM) , Santa Maria , Brazil.,c Laboratório de Bioquímica do Exercício, Centro de Educação Física e Desportos , Universidade Federal de Santa Maria (UFSM) , Santa Maria , Brazil
| | - Javier Gonzalez-Gallego
- d Institute of Biomedicine (IBIOMED) and Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd) , University of León , León , Spain
| | - Guilherme Bresciani
- e Grupo de Investigación en Rendimiento Físico y Salud (IRyS), Escuela de Educación Física , Pontificia Universidad Católica de Valparaiso , Valparaiso , Chile
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Kotaka K, Nagai J, Hensley K, Ohshima T. Lanthionine ketimine ester promotes locomotor recovery after spinal cord injury by reducing neuroinflammation and promoting axon growth. Biochem Biophys Res Commun 2016; 483:759-764. [PMID: 27965088 DOI: 10.1016/j.bbrc.2016.12.069] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 12/09/2016] [Indexed: 11/26/2022]
Abstract
The mammalian central nervous system (CNS) has limited regenerative ability after injury, largely due to scar formation and axonal growth inhibitors. Experimental suppression of neuroinflammation encourages recovery from spinal cord injury (SCI), yet practical means for pharmacologically treating SCI have remained elusive. Lanthionine ketimine (LK) is a natural brain sulfur amino acid metabolite with demonstrated anti-neuroinflammatory and neurotrophic activities. LK and its synthetic brain-penetrating ethyl ester (LKE) promote growth factor-dependent neurite extension in cultured cell and suppress microglial activation in animal models of neurodegeneration. Thus far however, LKE has not been explored as a potential therapy for SCI. The present study investigated the hypothesis that systemic LKE could improve motor functional recovery after SCI in a mouse model. Intraperitoneal administration of LKE (100 mg/kg/d) after near-complete transect of spinal cord at the T7 level significantly improved motor function over a 4-week time course. Vehicle-treated mice, in contrast, demonstrated negligible functional recovery. In terms of histology, LKE treatment reduced pro-neuroinflammatory microglia/macrophage activation evidenced by quantitative Iba1 labeling and shifted the microglial phenotype toward a more neurotrophic M2 character evidenced by changes in the M2 marker arginase-1. This was correlated with less dense scar formation and more extensive axonal regrowth across the transection site demonstrated by 5-hydroxytryptamine (5HT) immunolabeling of raphespinal tract axons. These data provide evidence that LKE or similar compounds have potential therapeutic value for recovery after certain forms of SCI.
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Affiliation(s)
- Ken Kotaka
- Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, TWIns, Tokyo, 162-8480, Japan
| | - Jun Nagai
- Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, TWIns, Tokyo, 162-8480, Japan; Research Fellow of Japan Society for the Promotion of Science, Japan
| | - Kenneth Hensley
- Department of Pathology, University of Toledo, College of Medicine, Toledo, OH, USA
| | - Toshio Ohshima
- Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, TWIns, Tokyo, 162-8480, Japan.
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Leite JSM, Cruzat VF, Krause M, Homem de Bittencourt PI. Physiological regulation of the heat shock response by glutamine: implications for chronic low-grade inflammatory diseases in age-related conditions. ACTA ACUST UNITED AC 2016. [DOI: 10.1186/s41110-016-0021-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Modulation of rat monocyte/macrophage innate functions by increasing intensities of swimming exercise is associated with heat shock protein status. Mol Cell Biochem 2016; 421:111-25. [DOI: 10.1007/s11010-016-2791-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 08/06/2016] [Indexed: 12/16/2022]
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Leite JSM, Raizel R, Hypólito TM, Rosa TDS, Cruzat VF, Tirapegui J. l-glutamine and l-alanine supplementation increase glutamine-glutathione axis and muscle HSP-27 in rats trained using a progressive high-intensity resistance exercise. Appl Physiol Nutr Metab 2016; 41:842-849. [PMID: 27447686 DOI: 10.1139/apnm-2016-0049] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
In this study we investigated the chronic effects of oral l-glutamine and l-alanine supplementation, either in their free or dipeptide form, on glutamine-glutathione (GLN-GSH) axis and cytoprotection mediated by HSP-27 in rats submitted to resistance exercise (RE). Forty Wistar rats were distributed into 5 groups: sedentary; trained (CTRL); and trained supplemented with l-alanyl-l-glutamine, l-glutamine and l-alanine in their free form (GLN+ALA), or free l-alanine (ALA). All trained animals were submitted to a 6-week ladder-climbing protocol. Supplementations were offered in a 4% drinking water solution for 21 days prior to euthanasia. Plasma glutamine, creatine kinase (CK), myoglobin (MYO), and erythrocyte concentration of reduced GSH and glutathione disulfide (GSSG) were measured. In tibialis anterior skeletal muscle, GLN-GSH axis, thiobarbituric acid reactive substances (TBARS), and the expression of heat shock factor 1 (HSF-1), 27-kDa heat shock protein (HSP-27), and glutamine synthetase were determined. In CRTL animals, high-intensity RE reduced muscle glutamine levels and increased GSSG/GSH rate and TBARS, as well as augmented plasma CK and MYO levels. Conversely, l-glutamine-supplemented animals showed an increase in plasma and muscle levels of glutamine, with a reduction in GSSG/GSH rate, TBARS, and CK. Free l-alanine administration increased plasma glutamine concentration and lowered muscle TBARS. HSF-1 and HSP-27 were high in all supplemented groups when compared with CTRL (p < 0.05). The results presented herein demonstrate that l-glutamine supplemented with l-alanine, in both a free or dipeptide form, improve the GLN-GSH axis and promote cytoprotective effects in rats submitted to high-intensity RE training.
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Affiliation(s)
- Jaqueline Santos Moreira Leite
- a Department of Food Science and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, CEP 05508-000, Brazil
| | - Raquel Raizel
- a Department of Food Science and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, CEP 05508-000, Brazil
| | - Thaís Menezes Hypólito
- a Department of Food Science and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, CEP 05508-000, Brazil
| | - Thiago Dos Santos Rosa
- b Graduate Program of Physical Education and Health, Catholic University of Brasília, Brasília, CEP 71966-700, Brazil
| | - Vinicius Fernandes Cruzat
- c Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo, CEP 05508-000, Brazil
| | - Julio Tirapegui
- a Department of Food Science and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, CEP 05508-000, Brazil
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Reyes-Silveyra J, Mikler AR. Modeling immune response and its effect on infectious disease outbreak dynamics. Theor Biol Med Model 2016; 13:10. [PMID: 26944943 PMCID: PMC4779228 DOI: 10.1186/s12976-016-0033-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 02/23/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In recent epidemiological models, immunity is incorporated as a simplified value that determines the capacity of an individual to become infected or to transmit the disease. Moreover, the quality of the immune response determines the chances of infection and the length of time an individual is capable to infect others. We present a model that incorporates individuals' immune responses to, further, examine the role of the collective immune response of individuals in a population during an infectious outbreak. METHODS We constructed a contagion model that incorporates the collective immune response of individuals represented by the superposition of individual immune responses (PIR). Multiple probability distributions are used to represent the immunocompetence of different age groups, thereby modeling the concept of Population Immune Response (PIR). Multiple experiments were conducted in which the population is divided in different age groups for which each group has a unique immune response quality and thus a different length for its immune periods. Finally, we explored the effects of implementing different vaccination strategies in the population. RESULTS The experiments displayed important variations in the outbreak dynamics as a consequence of incorporating PIR in homogeneous and mixed populations. The experiments showed that individuals with weak immune responses and those who are immune to the pathogen play a significant role in shaping the outbreak dynamics. Finally, after implementing different vaccination strategies, the results suggest that if vaccination resources are limited, the vaccination should be targeted towards individuals that spread the disease for a longer period of time. CONCLUSIONS Our results suggest that it is essential for the public health establishment to increase their understanding of the characteristics of regional demographics that could impact the quality of the immune response of the individuals. The results indicate that it is necessary to further investigate mitigation strategies to limit the capacity to transmit the disease by individuals that spread the pathogen for extended periods of time. Ultimately, this study suggests that it is crucial for public health researchers to identify appropriate targeted vaccination regimes and to explore the link between PIR and outbreak dynamics to improve the monitoring and mitigating efforts of ongoing and future epidemics.
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Affiliation(s)
- Jorge Reyes-Silveyra
- Center for Computational Epidemiology and Response Analysis, University of North Texas, 1155 Union Circle 311277, Denton, 76203, TX, USA.
- Department of Computer Science and Computer Engineering, Pacific Lutheran University, 1010 S 122nd St, Tacoma, 98447, WA, USA.
| | - Armin R Mikler
- Center for Computational Epidemiology and Response Analysis, University of North Texas, 1155 Union Circle 311277, Denton, 76203, TX, USA.
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The regulatory roles of NADPH oxidase, intra- and extra-cellular HSP70 in pancreatic islet function, dysfunction and diabetes. Clin Sci (Lond) 2015; 128:789-803. [DOI: 10.1042/cs20140695] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The 70 kDa heat-shock protein (HSP70) family is important for a dynamic range of cellular processes that include protection against cell stress, modulation of cell signalling, gene expression, protein synthesis, protein folding and inflammation. Within this family, the inducible 72 kDa and the cognate 73 kDa forms are found at the highest level. HSP70 has dual functions depending on location. For example, intracellular HSP70 (iHSP70) is anti-inflammatory whereas extracellular HSP70 (eHSP70) has a pro-inflammatory function, resulting in local and systemic inflammation. We have recently identified a divergence in the levels of eHSP70 and iHSP70 in subjects with diabetes compared with healthy subjects and also reported that eHSP70 was correlated with insulin resistance and pancreatic β-cell dysfunction/death. In the present review, we describe possible mechanisms by which HSP70 participates in cell function/dysfunction, including the activation of NADPH oxidase isoforms leading to oxidative stress, focusing on the possible role of HSPs and signalling in pancreatic islet α- and β-cell physiological function in health and Type 2 diabetes mellitus.
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Cruzat VF, Krause M, Newsholme P. Amino acid supplementation and impact on immune function in the context of exercise. J Int Soc Sports Nutr 2014; 11:61. [PMID: 25530736 PMCID: PMC4272512 DOI: 10.1186/s12970-014-0061-8] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Accepted: 12/04/2014] [Indexed: 01/16/2023] Open
Abstract
Moderate and chronic bouts of exercise may lead to positive metabolic, molecular, and morphological adaptations, improving health. Although exercise training stimulates the production of reactive oxygen species (ROS), their overall intracellular concentration may not reach damaging levels due to enhancement of antioxidant responses. However, inadequate exercise training (i.e., single bout of high-intensity or excessive exercise) may result in oxidative stress, muscle fatigue and muscle injury. Moreover, during the recovery period, impaired immunity has been reported, for example; excessive-inflammation and compensatory immunosuppression. Nutritional supplements, sometimes referred to as immuno-nutrients, may be required to reduce immunosuppression and excessive inflammation. Herein, we discuss the action and the possible targets of key immuno-nutrients such as L-glutamine, L-arginine, branched chain amino acids (BCAA) and whey protein.
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Affiliation(s)
- Vinicius Fernandes Cruzat
- CHIRI Biosciences Research Precinct, Faculty of Health Sciences, School of Biomedical Sciences, Curtin University, GPO Box U1987, Perth, Western Australia Australia
| | - Maurício Krause
- Laboratory of Cellular Physiology, Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS Brazil
| | - Philip Newsholme
- CHIRI Biosciences Research Precinct, Faculty of Health Sciences, School of Biomedical Sciences, Curtin University, GPO Box U1987, Perth, Western Australia Australia
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Oral supplementations with free and dipeptide forms of l-glutamine in endotoxemic mice: effects on muscle glutamine-glutathione axis and heat shock proteins. J Nutr Biochem 2014; 25:345-52. [DOI: 10.1016/j.jnutbio.2013.11.009] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 11/19/2013] [Accepted: 11/21/2013] [Indexed: 11/21/2022]
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da Silva Rossato J, Krause M, Fernandes AJM, Fernandes JR, Seibt IL, Rech A, Homem de Bittencourt PI. Role of alpha- and beta-adrenoreceptors in rat monocyte/macrophage function at rest and acute exercise. J Physiol Biochem 2014; 70:363-74. [DOI: 10.1007/s13105-013-0310-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 12/22/2013] [Indexed: 01/11/2023]
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Petry ÉR, Cruzat VF, Heck TG, Leite JSM, Homem de Bittencourt PI, Tirapegui J. Alanyl-glutamine and glutamine plus alanine supplements improve skeletal redox status in trained rats: Involvement of heat shock protein pathways. Life Sci 2014; 94:130-6. [DOI: 10.1016/j.lfs.2013.11.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 10/16/2013] [Accepted: 11/05/2013] [Indexed: 02/06/2023]
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Knight JM, Lyness JM, Sahler OJZ, Liesveld JL, Moynihan JA. Psychosocial factors and hematopoietic stem cell transplantation: potential biobehavioral pathways. Psychoneuroendocrinology 2013; 38:2383-93. [PMID: 23845514 PMCID: PMC3812389 DOI: 10.1016/j.psyneuen.2013.06.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Revised: 06/12/2013] [Accepted: 06/12/2013] [Indexed: 01/23/2023]
Abstract
While psychosocial factors are known to affect cancer progression via biobehavioral pathways in many patient populations, these relationships remain largely unexplored in hematopoietic stem cell transplant (HCT) patients. The purpose of this paper is to critically review the literature regarding psychosocial and endocrine/immune aspects of HCT, with an emphasis on exploring pathways that may mediate the associations between psychosocial factors and disease outcomes. These include the roles of catecholamines, glucocorticoids, inflammation, vascular endothelial growth factor (VEGF), immune reconstitution and infectious susceptibility, as well as the new opportunities available in genomics research. We also discuss the implications for potential immunomodulating psychosocial interventions. Elucidating the biological pathways that account for the associations between psychosocial factors and clinical course could ultimately lead to improved outcomes for this psychologically and immunologically vulnerable population.
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Affiliation(s)
- Jennifer M. Knight
- Department of Psychiatry and Behavioral Medicine, Medical College of Wisconsin
| | - Jeffrey M. Lyness
- Rochester Center for Mind-Body Research, Department of Psychiatry, University of Rochester Medical Center
| | - Olle Jane Z. Sahler
- Division of Hematology/Oncology, Department of Pediatrics, University of Rochester Medical Center,Medical Humanities
| | - Jane L. Liesveld
- Division of Hematology/Oncology, Department of Medicine, University of Rochester Medical Center
| | - Jan A. Moynihan
- Rochester Center for Mind-Body Research, Department of Psychiatry, University of Rochester Medical Center
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Cruzat VF, Bittencourt A, Scomazzon SP, Leite JSM, de Bittencourt PIH, Tirapegui J. Oral free and dipeptide forms of glutamine supplementation attenuate oxidative stress and inflammation induced by endotoxemia. Nutrition 2013; 30:602-11. [PMID: 24698353 DOI: 10.1016/j.nut.2013.10.019] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 09/12/2013] [Accepted: 10/24/2013] [Indexed: 12/18/2022]
Abstract
OBJECTIVE The aim of the present study was to determine the effects of oral supplementation with L-glutamine plus L-alanine (GLN+ALA), both in the free form and L-alanyl-L-glutamine dipeptide (DIP) in endotoxemic mice. METHODS B6.129 F2/J mice were subjected to endotoxemia (Escherichia coli lipopolysaccharide [LPS], 5 mg/kg, LPS group) and orally supplemented for 48 h with either L-glutamine (1 g/kg) plus L-alanine (0.61 g/kg) (GLN+ALA-LPS group) or 1.49 g/kg DIP (DIP-LPS group). Plasma glutamine, cytokines, and lymphocyte proliferation were measured. Liver and skeletal muscle glutamine, glutathione (GSH), oxidized GSH (GSSG), tissue lipoperoxidation (TBARS), and nuclear factor (NF)-κB-interleukin-1 receptor-associated kinase 1 (IRAK1)-Myeloid differentiation primary response gene 88 pathway also were determined. RESULTS Endotoxemia depleted plasma (by 71%), muscle (by 44%), and liver (by 49%) glutamine concentrations (relative to the control group), which were restored in both GLN+ALA-LPS and DIP-LPS groups (P < 0.05). Supplemented groups reestablished GSH content, intracellular redox status (GSSG/GSH ratio), and TBARS concentration in muscle and liver (P < 0.05). T- and B-lymphocyte proliferation increased in supplemented groups compared with controls and LPS group (P < 0.05). Tumor necrosis factor-α, interleukin (IL)-6, IL-1 β, and IL-10 increased in LPS group but were attenuated by the supplements (P < 0.05). Endotoxemic mice exhibited higher muscle gene expression of components of the NF-κB pathway, with the phosphorylation of IκB kinase-α/β. These returned to basal levels (relative to the control group) in both GLN+ALA-LPS and DIP-LPS groups (P < 0.05). Higher mRNA of IRAK1 and MyD88 were observed in muscle of LPS group compared with the control and supplemented groups (P < 0.05). CONCLUSION Oral supplementations with GLN+ALA or DIP are effective in attenuating oxidative stress and the proinflammatory responses induced by endotoxemia in mice.
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Affiliation(s)
- Vinicius Fernandes Cruzat
- Department of Food Science and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil; School of Biomedical Sciences, CHIRI Biosciences Research Precinct, Faculty of Health Sciences, Curtin University, Perth, Western Australia.
| | - Aline Bittencourt
- Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Rua Sarmento Leite, Porto Alegre, Brazil
| | - Sofia Pizzato Scomazzon
- Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Rua Sarmento Leite, Porto Alegre, Brazil
| | - Jaqueline Santos Moreira Leite
- Department of Food Science and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Paulo Ivo Homem de Bittencourt
- Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Rua Sarmento Leite, Porto Alegre, Brazil
| | - Julio Tirapegui
- Department of Food Science and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
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Hsieh CL, Peng CC, Chen KC, Peng RY. Rutin (quercetin rutinoside) induced protein-energy malnutrition in chronic kidney disease, but quercetin acted beneficially. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:7258-7267. [PMID: 23876017 DOI: 10.1021/jf304595p] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Nutraceutically, much of the literature has indicated that an aglycon and its related glycoside would act similarly. However, controversial reports are accumulating. We hypothesize that rutin (RT) and quercetin (QT) pharmacodynamically could act differently. To confirm this, doxorubicin (DR) (8.5 mg/kg) was used to induce rat chronic kidney disease (CKD) and then treated with QT and RT (each 70 mg/kg body weight per day) for 13 weeks. QT exhibited better body weight gaining effect (420 ± 45) vs RT, 350 ± 57 g/rat (p < 0.001). DR raised the ratio kidney-to-body weight (%) to 0.82 (p < 0.001) vs RT, 0.62 (p < 0.01), and QT, 0.35 (p < 0.01). DR reduced the glomerular filtration rate to 25.2 vs RT, 48 ± 11.3; QT, 124.7 ± 12.8 (p < 0.001) and the control, 191.5 ± 15.7 mL/h (p < 0.001). DRCKD reduced hematocrit to 29 ± 5; RT, to 28 ± 5 (p < 0.05); QT, to 36 ± 6 vs the control 37.5 ± 4%, (p < 0.01). DRCKD reduced the serum albumin (s-Ab) to 2.1 ± 0.2 (p < 0.001); QT, to 2.7 ± 0.2 (p < 0.05) vs the normal 4.3 ± 0.5 g/dL, yet RT was totally ineffective. DRCKD raised serum cholesterol level to 340 ± 30; vs RT, 260 ± 12; QT, 220 ± 25; and the normal value, 70 ± 25 mg/dL. DRCKD increased serum triglyceride to 260 ± 15 (p < 0.001), RT and QT restored it to 170 ± 25 and 200 ± 15 (p < 0.05) vs the normal 26-145 mg/dL. DRCKD elevated blood urea nitrogen to 38 ± 3 vs RT, to 98 ± 6 mg/dL (p < 0.001), implicating "protein-energy malnutrition". RT stimulated serum creatinine (sCr) production to reach 6.0 ± 0.9 mg/dL (p < 0.001). QT did not alter the sCr level. RT but not QT induced uremia and hypercreatininemia. DR significantly downregulated Bcl-2, but highly upregulated Bax, Bad, and cleaved caspase-3, implicating the intrinsic mitochondrial pathway. DR damaged DNA, but QT completely rescued such an effect and recovered renal amyloidosis and collagen deposition. Conclusively, RT and QT act differently, and RT is inferior to QT with respect to treating CKD.
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Affiliation(s)
- Chiu-Lan Hsieh
- Graduate Institute of Biotechnology, Changhua University of Education, Changhua, Taiwan
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Petzinger GM, Fisher BE, McEwen S, Beeler JA, Walsh JP, Jakowec MW. Exercise-enhanced neuroplasticity targeting motor and cognitive circuitry in Parkinson's disease. Lancet Neurol 2013; 12:716-26. [PMID: 23769598 PMCID: PMC3690528 DOI: 10.1016/s1474-4422(13)70123-6] [Citation(s) in RCA: 468] [Impact Index Per Article: 42.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Exercise interventions in individuals with Parkinson's disease incorporate goal-based motor skill training to engage cognitive circuitry important in motor learning. With this exercise approach, physical therapy helps with learning through instruction and feedback (reinforcement) and encouragement to perform beyond self-perceived capability. Individuals with Parkinson's disease become more cognitively engaged with the practice and learning of movements and skills that were previously automatic and unconscious. Aerobic exercise, regarded as important for improvement of blood flow and facilitation of neuroplasticity in elderly people, might also have a role in improvement of behavioural function in individuals with Parkinson's disease. Exercises that incorporate goal-based training and aerobic activity have the potential to improve both cognitive and automatic components of motor control in individuals with mild to moderate disease through experience-dependent neuroplasticity. Basic research in animal models of Parkinson's disease is beginning to show exercise-induced neuroplastic effects at the level of synaptic connections and circuits.
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Affiliation(s)
- Giselle M Petzinger
- Department of Neurology, University of Southern California, Los Angeles, CA 90089, USA.
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Jang SE, Joh EH, Ahn YT, Huh CS, Han MJ, Kim DH. Lactobacillus caseiHY7213 ameliorates cyclophosphamide-induced immunosuppression in mice by activating NK, cytotoxic t cells and macrophages. Immunopharmacol Immunotoxicol 2013; 35:396-402. [DOI: 10.3109/08923973.2013.789055] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Walter RB, Buckley SA, White E. Regular recreational physical activity and risk of hematologic malignancies: results from the prospective VITamins And lifestyle (VITAL) study. Ann Oncol 2013; 24:1370-7. [PMID: 23247659 PMCID: PMC3629898 DOI: 10.1093/annonc/mds631] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 10/27/2012] [Accepted: 10/30/2012] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Conflicting evidence exists on the relationship between physical activity (PA) and incident hematologic malignancies. Herein, we used a large cohort study to examine this association. PATIENTS AND METHODS Sixty-five thousand three hundred twenty-two volunteers aged 50-76 years were recruited from 2000 to 2002. Incident hematologic malignancies (n = 666) were identified through 2009 by linkage to the Surveillance, Epidemiology, and End Results cancer registry. Hazard ratios (HRs) for hematologic malignancies associated with PA averaged over 10 years before baseline were estimated with Cox proportional hazards models, adjusting for factors associated with hematologic cancers or PA. RESULTS There was a decreased risk of hematologic malignancies associated with PA (HR = 0.66 [95% confidence interval, 95% CI 0.51-0.86] for the highest tertile of all PA, P-trend = 0.005, and HR = 0.60 [95% CI 0.44-0.82] for the highest tertile of moderate/high-intensity PA, P-trend = 0.002). These associations were strongest for myeloid neoplasms (HR = 0.48 [95% CI 0.29-0.79] for the highest tertile of all PA, P-trend = 0.013, and HR = 0.40 [95% CI 0.21-0.77] for the highest tertile of moderate/high-intensity PA, P-trend = 0.016). There were also significant associations between PA and chronic lymphocytic leukemia/small lymphocytic lymphoma or other mature B-cell lymphomas except plasma cell disorders. CONCLUSIONS Our study offers the strongest epidemiological evidence, to date, to suggest an association between regular PA and dose-dependent risk reduction for most hematologic malignancies, particularly myeloid neoplasms.
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Affiliation(s)
- R B Walter
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109-1024, USA.
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Krause M, Rodrigues-Krause J, O'Hagan C, De Vito G, Boreham C, Susta D, Newsholme P, Murphy C. Differential nitric oxide levels in the blood and skeletal muscle of type 2 diabetic subjects may be consequence of adiposity: a preliminary study. Metabolism 2012; 61:1528-37. [PMID: 22683098 DOI: 10.1016/j.metabol.2012.05.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 04/24/2012] [Accepted: 05/02/2012] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND AIMS Nitric oxide (NO·) exerts key regulatory functions including vasodilation and glucose uptake. Thus reduced NO· levels are associated with insulin resistance and hypertension. In this preliminary work we aimed to measure the levels of NO· metabolites in serum and skeletal muscle of obese and non-obese subjects, with or without type 2 diabetes mellitus (T2DM). METHODS Fifteen sedentary male participants [7 obese controls (C) vs 5 obese and 3 non-obese T2DM; age 54±9 years] were selected according to their BMI (>30 kg/m(2) for obese and 23-27 kg/m(2) for non-obese participants) and evaluated for fasted values of blood glucose, HbA1c, lipid profile, serum CRP (C-reactive protein), erythrocyte glutathione (GSH) metabolism, plasma adiponectin, leptin and cytokines (TNF-α and INFγ), serum and skeletal muscle nitric oxide metabolites (nitrite and nitrates; tNOx) and skeletal muscle nNOS and iNOS expression. Body composition was measured by whole body DEXA and muscle microbiopsy was performed in the vastus lateralis. RESULTS We found that serum tNOx (total nitrite/nitrate; μmol/L) was lower in obese T2DM group (12.7±3.5) when compared with their controls (21.1±2.4), although the non-obese group presented higher concentration of tNOx (33.8±7.2). Skeletal muscle nNOS was higher in obese controls, lower in non-obese T2DM and undetected in obese T2DM. On the other hand, expression of iNOS had an inverse relationship with nNOS, showing higher expression in obese T2DM, decrease in non-obese T2DM and absence in obese control group. tNOx levels (μmol/mg protein) were decreased in the non-obese T2DM group (12.07±0.59) when compared with the obese control (21.68±6.2) and the obese T2DM group (26.3±7.26). CONCLUSION We conclude that the decreased serum NO∙ production in obese T2DM patients seems to be associated with adipose mass as lower adiposity was associated with normal NO∙ which was reduced in the skeletal muscle of the non-obese T2DM patients. We suggest that the lower adiposity (and higher adiponectin) in non-obese T2DM could be responsible for differential levels of NO∙ production and insulin resistance.
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Affiliation(s)
- Mauricio Krause
- Biomedical Research Group, Department of Science, Institute of Technology Tallaght Dublin, Ireland.
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Hursting SD, Digiovanni J, Dannenberg AJ, Azrad M, Leroith D, Demark-Wahnefried W, Kakarala M, Brodie A, Berger NA. Obesity, energy balance, and cancer: new opportunities for prevention. Cancer Prev Res (Phila) 2012; 5:1260-72. [PMID: 23034147 DOI: 10.1158/1940-6207.capr-12-0140] [Citation(s) in RCA: 137] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Obesity is associated with increased risk and poor prognosis for many types of cancer. The mechanisms underlying the obesity-cancer link are becoming increasingly clear and provide multiple opportunities for primary to tertiary prevention. Several obesity-related host factors can influence tumor initiation, progression and/or response to therapy, and these have been implicated as key contributors to the complex effects of obesity on cancer incidence and outcomes. These host factors include insulin, insulin-like growth factor-I, leptin, adiponectin, steroid hormones, cytokines, and inflammation-related molecules. Each of these host factors is considered in the context of energy balance and as potential targets for cancer prevention. The possibility of prevention at the systems level, including energy restriction, dietary composition, and exercise is considered as is the importance of the newly emerging field of stem cell research as a model for studying energy balance and cancer prevention.
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Peng CC, Chen KC, Hsieh CL, Peng RY. Swimming exercise prevents fibrogenesis in chronic kidney disease by inhibiting the myofibroblast transdifferentiation. PLoS One 2012; 7:e37388. [PMID: 22761655 PMCID: PMC3384651 DOI: 10.1371/journal.pone.0037388] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Accepted: 04/18/2012] [Indexed: 11/21/2022] Open
Abstract
Background The renal function of chronic kidney disease (CKD) patients may be improved by a number of rehabilitative mechanisms. Swimming exercise training was supposed to be beneficial to its recovery. Methodology/Principal Findings Doxorubicin-induced CKD (DRCKD) rat model was performed. Swimming training was programmed three days per week, 30 or 60 min per day for a total period of 11 weeks. Serum biochemical and pathological parameters were examined. In DRCKD, hyperlipidemia was observed. Active mesangial cell activation was evidenced by overexpression of PDGFR, P-PDGFR, MMP-2, MMP-9, α-SMA, and CD34 with a huge amount collagen deposition. Apparent myofibroblast transdifferentiation implicating fibrogenesis in the glomerular mesangium, glomerulonephritis and glomeruloscelorosis was observed with highly elevated proteinuria and urinary BUN excretion. The 60-min swimming exercise but not the 30 min equivalent rescued most of the symptoms. To quantify the effectiveness of exercise training, a physical parameter, i.e. “the strenuosity coefficient” or “the myokine releasing coefficient”, was estimated to be 7.154×10−3 pg/mL-J. Conclusions The 60-min swimming exercise may ameliorate DRCKD by inhibiting the transdifferentiation of myofibroblasts in the glomerular mesangium. Moreover, rehabilitative exercise training to rescue CKD is a personalized remedy. Benefits depend on the duration and strength of exercise, and more importantly, on the individual physiological condition.
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Affiliation(s)
- Chiung-Chi Peng
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
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Câmara LC, Bastos CC, Volpe EFT. Exercício resistido em idosos frágeis: uma revisão da literatura. FISIOTERAPIA EM MOVIMENTO 2012. [DOI: 10.1590/s0103-51502012000200021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
INTRODUÇÃO: A síndrome da fragilidade, bastante comum em pessoas de idade avançada, consiste em um conjunto de sinais e sintomas no qual estão presentes critérios como perda de peso corporal não intencional em um ano (aproximadamente 5%), diminuição na velocidade da marcha, níveis baixos de atividade física, exaustão subjetiva e diminuição de força muscular. Os consequentes efeitos dessas mudanças relacionadas à idade, que incluem sarcopenia, disfunção imunológica e desregulação neuroendócrina, aumentam a vulnerabilidade do organismo ao estresse, reduzindo a habilidade de adaptar, compensar ou modular esses estímulos. Diferentes intervenções têm sido propostas para atenuar esse processo, sendo o exercício resistido (ER) uma das opções estudadas. OBJETIVO: Realizar uma revisão bibliográfica averiguando os efeitos dos ER na fisiopatologia da síndrome da fragilidade. MATERIAIS E MÉTODOS: Foi realizada uma revisão bibliográfica do período de 2004 a 2010, por meio das bases de dados LILACS, MEDLINE e PubMed. RESULTADOS: Por meio das análises dos estudos, foram observadas alterações nos sistemas hormonal e imune, atuando de forma sistêmica na reversão ou minimização dos efeitos da sarcopenia exercendo influência positiva na síndrome da fragilidade. CONCLUSÃO: O ER deve ser indicado como opção terapêutica para idosos frágeis ou pré-frágeis que não apresentem contraindicações para realização desta modalidade de exercício.
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Overload training inhibits phagocytosis and ROS generation of peritoneal macrophages: role of IGF-1 and MGF. Eur J Appl Physiol 2012; 113:117-25. [DOI: 10.1007/s00421-012-2418-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Accepted: 05/02/2012] [Indexed: 01/08/2023]
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Rodrigues-Krause J, Krause M, O’Hagan C, De Vito G, Boreham C, Murphy C, Newsholme P, Colleran G. Divergence of intracellular and extracellular HSP72 in type 2 diabetes: does fat matter? Cell Stress Chaperones 2012; 17:293-302. [PMID: 22215518 PMCID: PMC3312959 DOI: 10.1007/s12192-011-0319-x] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Revised: 12/14/2011] [Accepted: 12/16/2011] [Indexed: 12/21/2022] Open
Affiliation(s)
- Josianne Rodrigues-Krause
- Biomedical Research Group, Department of Science, Institute of Technology Tallaght, Belgard Road, Tallaght, Dublin 24, Dublin, Ireland
- UCD School of Biomolecular and Biomedical Science, Conway Institute, Dublin, Ireland
| | - Mauricio Krause
- Biomedical Research Group, Department of Science, Institute of Technology Tallaght, Belgard Road, Tallaght, Dublin 24, Dublin, Ireland
- UCD School of Biomolecular and Biomedical Science, University College Dublin, Conway Institute, Dublin, Ireland
| | - C. O’Hagan
- Institute for Sport and Health, University College Dublin, Dublin, Ireland
| | - Giuseppe De Vito
- Institute for Sport and Health, University College Dublin, Dublin, Ireland
| | - Colin Boreham
- Institute for Sport and Health, University College Dublin, Dublin, Ireland
| | - Colin Murphy
- Biomedical Research Group, Department of Science, Institute of Technology Tallaght, Belgard Road, Tallaght, Dublin 24, Dublin, Ireland
| | - Philip Newsholme
- UCD School of Biomolecular and Biomedical Science, Conway Institute, Dublin, Ireland
- School of Biomedical Sciences, Curtin University, Perth, Australia
| | - Gerard Colleran
- Biomedical Research Group, Department of Science, Institute of Technology Tallaght, Belgard Road, Tallaght, Dublin 24, Dublin, Ireland
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Wong JK, Steward O. One day of motor training with amphetamine impairs motor recovery following spinal cord injury. Exp Neurol 2011; 233:693-707. [PMID: 22078754 DOI: 10.1016/j.expneurol.2011.08.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Revised: 05/29/2011] [Accepted: 08/08/2011] [Indexed: 11/15/2022]
Abstract
It has previously been reported that a single dose of amphetamine paired with training on a beam walking task can enhance locomotor recovery following brain injury (Feeney et al., 1982). Here, we investigated whether this same drug/training regimen could enhance functional recovery following either thoracic (T9) or cervical (C5) spinal cord injury. Different groups of female Sprague-Dawley rats were trained on a beam walking task, and in a straight alley for assessment of hindlimb locomotor recovery using the BBB locomotor scale. For rats that received C5 hemisections, forelimb grip strength was assessed using a grip strength meter. Three separate experiments assessed the consequences of training rats on the beam walking task 24 h following a thoracic lateral hemisection with administration of either amphetamine or saline. Beginning 1 h following drug administration, rats either received additional testing/retraining on the beam hourly for 6 h, or they were returned to their home cages without further testing/retraining. Rats with thoracic spinal cord injuries that received amphetamine in conjunction with testing/retraining on the beam at 1 day post injury (DPI) exhibited significantly impaired recovery on the beam walking task and BBB. Rats with cervical spinal cord injuries that received training with amphetamine also exhibited significant impairments in beam walking and locomotion, as well as impairments in gripping and reaching abilities. Even when administered at 14 DPI, the drug/training regimen significantly impaired reaching ability in cervical spinal cord injured rats. Impairments were not seen in rats that received amphetamine without training. Histological analyses revealed that rats that received training with amphetamine had significantly larger lesions than saline controls. These data indicate that an amphetamine/training regimen that improves recovery after cortical injury has the opposite effect of impairing recovery following spinal cord injury because early training with amphetamine increases lesion severity.
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Affiliation(s)
- Jamie K Wong
- Department of Neurobiology & Behavior, University of California at Irvine, Irvine, CA 92697, USA
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Rodrigues AM, Bergamaschi CT, Araújo RC, Mouro MG, Rosa TS, Higa EMS. Effects of training and nitric oxide on diabetic nephropathy progression in type I diabetic rats. Exp Biol Med (Maywood) 2011; 236:1180-7. [PMID: 21930716 DOI: 10.1258/ebm.2011.011005] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The aim of the paper is to assess nitric oxide (NO) production during aerobic training and its role on the progression of diabetic nephropathy in rats. Induction of diabetes mellitus (DM) was achieved in adult male Wistar rats with streptozotocin. Half of the animals underwent training on a treadmill and the others (sedentary) stayed on a turned-off treadmill for the same period according to the following groups: sedentary control (CTL + SE); training control (CTL + EX); sedentary diabetic (DM + SE); and training diabetic (DM + EX) (n = 9 for all groups). The training on treadmill was carried out at a work rate of 16 m/min, 60 min/d, 5 d/week for eight weeks. Before and after the exercises, rats were placed in individual metabolic cages with standard chow and water ad libitum, for 24-h urine collection, followed by three hours' fasting blood sample withdrawal from the retro-orbital plexus, under anesthesia. Diabetic animals showed reduction of body weight, creatinine and urea depurations and NO excretion, increased blood glucose concentrations, albuminuria and thiobarbituric acid reactive substance (TBARS) excretion, when compared with the respective controls. All these alterations induced by DM were attenuated in the DM + EX versus DM + SE group. Analysis of insulin concentrations at the end of the protocol showed no significant change between the DM + SE and DM + EX groups. In conclusion, our data show that a routine physical exercise resulted in a better control of glycemia with an increased NO bioavailability and oxidative stress control, associated with an amelioration of renal function. We suggest aerobic training and the control of oxidative and nitrosative stress as useful non-pharmacological tools to delay the progression of diabetic nephropathy.
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Affiliation(s)
- Adelson M Rodrigues
- Department of Medicine, Nephrology Division, UNIFESP/Escola Paulista de Medicina, 04023-900 São Paulo, SP, Brazil
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Schaun MI, Dipp T, Silva Rossato J, Wilhelm EN, Pinto R, Rech A, Plentz RDM, Homem de Bittencourt PI, Reischak-Oliveira A. The effects of periodized concurrent and aerobic training on oxidative stress parameters, endothelial function and immune response in sedentary male individuals of middle age. Cell Biochem Funct 2011; 29:534-42. [DOI: 10.1002/cbf.1781] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Revised: 05/18/2011] [Accepted: 06/03/2011] [Indexed: 12/12/2022]
Affiliation(s)
- Maximiliano Isoppo Schaun
- School of Physical Education; Federal University of Rio Grande do Sul (UFRGS); Porto Alegre; Rio Grande do Sul; Brazil
| | - Thiago Dipp
- Institute of Cardiology of Rio Grande do Sul (IC-FUC); Porto Alegre; Rio Grande do Sul; Brazil
| | - Juliane Silva Rossato
- Laboratory of Cellular Physiology; Federal University of Rio Grande do Sul (UFRGS); Porto Alegre; Rio Grande do Sul; Brazil
| | - Eurico Nestor Wilhelm
- Laboratory of Cellular Physiology; Federal University of Rio Grande do Sul (UFRGS); Porto Alegre; Rio Grande do Sul; Brazil
| | - Ronei Pinto
- School of Physical Education; Federal University of Rio Grande do Sul (UFRGS); Porto Alegre; Rio Grande do Sul; Brazil
| | - Anderson Rech
- Laboratory of Cellular Physiology; Federal University of Rio Grande do Sul (UFRGS); Porto Alegre; Rio Grande do Sul; Brazil
| | | | | | - Alvaro Reischak-Oliveira
- School of Physical Education; Federal University of Rio Grande do Sul (UFRGS); Porto Alegre; Rio Grande do Sul; Brazil
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The involvement of nitric oxide and endothelin-1 in exercise-induced bronchospasm in young soccer players. Clin J Sport Med 2011; 21:237-42. [PMID: 21490504 DOI: 10.1097/jsm.0b013e31821a61c8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To investigate the levels of nitric oxide (NO) and endothelin-1 (ET-1) in soccer players with exercise-induced bronchospasm (EIB), to test whether these endogenous vasoactive molecules are involved in the development of EIB, and to examine the possible participation of reactive oxygen metabolites in these alterations. DESIGN Observational study. SETTING Football club. PARTICIPANTS Forty-three soccer players (N = 43) aged 16 to 22 years performed maximal exercise test on a treadmill by using Bruce protocol. INTERVENTIONS Respiratory function tests were evaluated before and after exercise tests. Participants were grouped as control (n = 35) or EIB (n = 8) groups according to the respiratory function test results. MAIN OUTCOME MEASURES Endothelin-1 (ET-1), nitric oxide (NO), carbonyl, malondialdehyde, and glutathione levels were determined from the blood samples taken before and after exercise tests. RESULTS In the control group, significant decreases in plasma ET-1 and serum NO levels were determined after exercise. On the other hand, plasma malondialdehyde and carbonyl levels were significantly decreased, whereas glutathione levels were significantly increased after exercise. In the EIB group, blood levels of NO, ET-1, carbonyl, and malondialdehyde after exercise were found to be significantly increased compared with pre-exercise levels. CONCLUSIONS These findings demonstrate that in young soccer players, EIB is associated with elevated serum NO and plasma ET-1 levels. Moreover, significant increases in lipid peroxidation and protein oxidation and decreases in antioxidant sulfhydryl (RSH) content indicate a significant compromise in the blood antioxidant status and the presence of systemic oxidative stress in young athletes with EIB.
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Heck TG, Schöler CM, de Bittencourt PIH. HSP70 expression: does it a novel fatigue signalling factor from immune system to the brain? Cell Biochem Funct 2011; 29:215-26. [PMID: 21374645 DOI: 10.1002/cbf.1739] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2010] [Revised: 01/14/2011] [Accepted: 01/18/2011] [Indexed: 12/12/2022]
Abstract
Integrative physiology studies have shown that immune system and central nervous system interplay very closely towards behavioural modulation. Since the 70-kDa heat shock proteins (HSP70s), whose heavy expression during exercise is well documented in the skeletal muscle and other tissues, is also extremely well conserved in nature during all evolutionary periods of species, it is conceivable that HSP70s might participate of physiologic responses such as fatigue induced by some types of physical exercise. In this way, increased circulating levels of extracellular HSP70 (eHSP70) could be envisaged as an immunomodulatory mechanism induced by exercise, besides other chemical messengers (e.g. cytokines) released during an exercise effort, that are able to binding a number of receptors in neural cells. Studies from this laboratory led us to believe that increased levels of eHSP70 in the plasma during exercise and the huge release of eHSP70 from lymphocytes during high-load exercise bouts may participate in the fatigue sensation, also acting as a danger signal from the immune system.
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Affiliation(s)
- Thiago Gomes Heck
- Laboratory of Cellular Physiology, Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
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Shojaei EA, Farajov A, Jafari A. Effect of moderate aerobic cycling on some systemic inflammatory markers in healthy active collegiate men. Int J Gen Med 2011; 4:79-84. [PMID: 21403796 PMCID: PMC3048343 DOI: 10.2147/ijgm.s15065] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Based on the inconsistency of some previous results related to moderate exercise effects on systemic inflammatory responses, this study was conducted to determine the effects of 45 minutes of moderate aerobic cycling on inflammatory markers, interleukin-6 (IL-6), interleukin-10 (IL-10), C-reactive protein (CRP), and leucocyte counts in young active men. METHODS Ten healthy, active collegiate men (aged 21.03 ± 1.2 years, body fat 12.04 ± 2.72% and VO(2)max 59.6 ± 2.4 mL/kg/min) in a quasiexperimental pre/post design, participated in an acute, moderate cycling protocol at an intensity of 50% VO(2)max for 45 minutes. The inflammatory markers (serum IL-6, IL-10, CRP, and peripheral blood leucocyte counts), along with cortisol and epinephrine, were examined before and after the protocol. Data were expressed as mean (± SD) and analyzed by paired t-test using SPSS15 at α ≤ 0.05. RESULTS The results showed that serum IL-6, IL-10, CRP, total leukocyte counts, and stress hormones (epinephrine and cortisol) were significantly increased following 45 minutes of moderate cycling in active collegiate men (P < 0.001). However, all pre- and post-measurements were in the population range. CONCLUSION Based on the present results, it can be concluded that moderate cycling is not only sufficient to induce systemic inflammation in active collegiate men, but also appears to be safe from an immunological point of view.
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Affiliation(s)
- Ebrahim Akhtari Shojaei
- Tuberculosis and Lung Diseases Research Centre, Tabriz University of Medical Sciences, Tabriz, Iran.
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Krause M, Rodrigues-Krause JDC. Extracellular heat shock proteins (eHSP70) in exercise: Possible targets outside the immune system and their role for neurodegenerative disorders treatment. Med Hypotheses 2010; 76:286-90. [PMID: 21071151 DOI: 10.1016/j.mehy.2010.10.025] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2010] [Revised: 10/12/2010] [Accepted: 10/13/2010] [Indexed: 11/18/2022]
Abstract
The intracellular heat shock protein 70kDa (iHSP70) is a universal marker of stress protein whose expression is induced by different cell stressors, such as heat, metabolite deprivation, redox imbalances and also during physical exercise. The activation of the iHSP70 is sine qua non for the promotion of tissue repair, since the expression of this chaperone confers cytoprotection and also exerts anti-inflammatory effects. On the other hand, exercise also induces the appearance of HSP70 in the extracellular medium (eHSP70) but, so far, the eHSP70 function has been mainly attributed to the activation of the immune system, seeming to perform an opposite function from the iHSP70. Since a moderate intensity exercise bout induces a general anti-inflammatory response even in the presence of an elevated eHSP70, this protein could carry out other functions rather than immune activation. Because exercise generates heat and metabolic challenges (especially on glucose metabolism) we suggests that the motoneurons, a very active (possibly one of the most stressed cells during exercise) and also very sensitive cells to heat and glucose metabolism imbalances, could be the major sites for the eHSP70 function. Due to the importance of the iHSP70 for repair and stress adaptation, this protein must be present in abundance on the site of stress and, because of its intrinsic inability response to stress [low heat shock factor 1 (HSF-1) activation] and the structure of the motoneurons (very long cells), the iHSP70, produced on the very far nucleus, is not appropriately transported through the axon to the axon terminal, were it is required. Then, during the exercise, the released eHSP70 can be internalized by the motoneurons and act as intracellular chaperons, protecting this cell against oxidative damage, protein denaturation and many others. Since a decreased iHSP70 expression capacity is associated with neurodegeneration diseases (such as Parkinson, polyglutamine, Amyotrophic lateral sclerosis, Alzheimer's, Huntington's and many others), the understanding of the physiological function of the extracellular HSP70 could be helpful on the treatment of neurodegenerative and other neuronal diseases. Besides that, it could explain some of the beneficial effects of the pharmacological HSP70 activators and also the beneficial effects of the exercise among neuronal cells during neurodegenerative-inducing diseases.
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Affiliation(s)
- Mauricio Krause
- Biomedical Research Group, Department of Science, Institute of Technology Tallaght, Dublin, Ireland.
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Is Lipid Peroxidation of Polyunsaturated Acids the Only Source of Free Radicals That Induce Aging and Age-Related Diseases? Rejuvenation Res 2010; 13:91-103. [DOI: 10.1089/rej.2009.0934] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Exercise and possible molecular mechanisms of protection from vascular disease and diabetes: the central role of ROS and nitric oxide. Clin Sci (Lond) 2009; 118:341-9. [PMID: 19922417 DOI: 10.1042/cs20090433] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
It is now widely accepted that hypertension and endothelial dysfunction are associated with an insulin-resistant state and thus with the development of T2DM (Type 2 diabetes mellitus). Insulin signalling is impaired in target cells and tissues, indicating that common molecular signals are involved. The free radical NO* regulates cell metabolism, insulin signalling and secretion, vascular tone, neurotransmission and immune system function. NO* synthesis is essential for vasodilation, the maintenance of blood pressure and glucose uptake and, thus, if levels of NO* are decreased, insulin resistance and hypertension will result. Decreased blood levels of insulin, increased AngII (angiotensin II), hyperhomocysteinaemia, increased ADMA (asymmetric omega-NG,NG-dimethylarginine) and low plasma L-arginine are all conditions likely to decrease NO* production and which are associated with diabetes and cardiovascular disease. We suggest in the present article that the widely reported beneficial effects of exercise in the improvement of metabolic and cardiovascular health are mediated by enhancing the flux of muscle- and kidney-derived amino acids to pancreatic and vascular endothelial cells aiding the intracellular production of NO*, therefore resulting in normalization of insulin secretion, vascular tone and insulin sensitivity. Exercise may also have an impact on AngII and ADMA signalling and the production of pro- and anti-inflammatory cytokines in muscle, so reducing the progression and development of vascular disease and diabetes. NO* synthesis will be increased during exercise in the vascular endothelial cells so promoting blood flow. We suggest that exercise may promote improvements in health due to positive metabolic and cytokine-mediated effects.
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da Silva Krause M, de Bittencourt PIH. Type 1 diabetes: can exercise impair the autoimmune event? TheL-arginine/glutamine coupling hypothesis. Cell Biochem Funct 2008; 26:406-33. [DOI: 10.1002/cbf.1470] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Malaguarnera L, Cristaldi E, Vinci M, Malaguarnera M. The role of exercise on the innate immunity of the elderly. Eur Rev Aging Phys Act 2007. [DOI: 10.1007/s11556-007-0028-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Abstract
The increased life span in human population has shown that some diseases, as infections, cancer and autoimmune phenomena, occur more frequently in the elderly than in the younger. We describe the ageing process involving the innate immune system and the improvement given by moderate physical activity. In addition, we discuss the altered neutrophil granulocytes function, the role of macrophages and natural killer cells, besides the influence of cytokines and secretory IgA. The acquired information help us to explain how these changes could favor the onset of diseases in the elderly and how they may boost their immune function.
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Lagranha CJ, Hirabara SM, Curi R, Pithon-Curi TC. Glutamine supplementation prevents exercise-induced neutrophil apoptosis and reduces p38 MAPK and JNK phosphorylation and p53 and caspase 3 expression. Cell Biochem Funct 2007; 25:563-9. [PMID: 17542038 DOI: 10.1002/cbf.1421] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We have previously shown that a single session of exercise induces DNA fragmentation, mitochondrial membrane depolarization, increases expression of pro-apoptotic genes (bax and bcl-xS) and decreases expression of anti-apoptotic genes (bcl-xL) in rat neutrophils. Glutamine supplementation had a protective effect in the apoptosis induced by a single session of exercise. The mechanism involved in the effect of single session of exercise to induce apoptosis was investigated by measuring expression of p53 and caspase 3 and phosphorylation of p38 mitogen-activated protein kinases (MAPK) and cJun NH(2)-terminal kinase (JNK) in neutrophils from rats supplemented or not with glutamine. Exercise was carried out on a treadmill for 1 h and the rats were killed by decapitation. Neutrophils were obtained by intraperitoneal (i.p.) lavage with PBS, 4 h after injection of oyster glycogen solution. Glutamine supplementation (1g per Kg b.w.) was given by gavage 1 h before the exercise session. Gene expression and protein phosphorylation were then analyzed by reverse transcriptase chain reaction (RT-PCR) and Western blotting, respectively. A single session of exercise increased p38 MAPK and JNK phosphorylation and p53 and caspase 3 expression. Glutamine supplementation partially prevented the increase in p38 MAPK and JNK phosphorylation and p53 expression, and fully abolished the increase in caspase 3 expression. Thus, neutrophil apoptosis induced by a single session of exercise is accompanied by increased p53 and caspase 3 expression and p38 MAPK and JNK phosphorylation. Glutamine supplementation prevents these effects of exercise and reduces apoptosis.
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Affiliation(s)
- Claudia J Lagranha
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
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