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Coherent apoptotic and autophagic activities involved in regression of chicken postovulatory follicles. Aging (Albany NY) 2019; 10:819-832. [PMID: 29706614 PMCID: PMC5940126 DOI: 10.18632/aging.101436] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 04/23/2018] [Indexed: 01/29/2023]
Abstract
After ovulation in mammals, rupture of mature follicles is reorganized into the corpus luteum that secrets progesterone (P4) to stimulate endometrial development. The situation in birds differs considerably. Beyond ovulation the ruptured avian follicle forms a postovulatory follicle (POF) that is not considered analogous to mammalian corpus luteum. The function and regression mechanisms of avian POFs remain poorly understood. Here we investigated the changes in apoptotic and autophagic activities that were involved during POF degradation. Results showed that the structure and secretory function of POF3 manifested the most apparent deterioration during whole processes of regression. A TUENL assay revealed that the granulosa layer maintained longer viability than the theca layer. Importantly, mitochondrial apoptosis and endoplasmic reticulum (ER) stress-associated genes and proteins reached their highest levels in the granulosa cells of POF3. Beclin1 was distributed mainly in theca cells and coupled with LC3β-II accumulation, Sequestosome-1 (p62) degradation and Beclin1 elevation confirmed that autophagic activity had increased dramatically in the theca layer of POFs. These results indicate that the apoptosis of the granulosa cells from POFs occurs by mitochondrial apoptosis and ER stress and that a coherence of Beclin1-induced autophagy and caspase-induced apoptosis results in regression of theca layers of avian POFs.
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de Lemos Muller CH, de Matos JR, Grigolo GB, Schroeder HT, Rodrigues-Krause J, Krause M. Exercise Training for the Elderly: Inflammaging and the Central Role for HSP70. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/s42978-019-0015-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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53
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Treadmill exercise intervention improves gait and postural control in alpha-synuclein mouse models without inducing cerebral autophagy. Behav Brain Res 2019; 363:199-215. [DOI: 10.1016/j.bbr.2018.11.035] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 11/22/2018] [Accepted: 11/23/2018] [Indexed: 12/21/2022]
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The Effects of Acute and Chronic Aerobic Activity on the Signaling Pathway of the Inflammasome NLRP3 Complex in Young Men. ACTA ACUST UNITED AC 2019; 55:medicina55040105. [PMID: 30991661 PMCID: PMC6524053 DOI: 10.3390/medicina55040105] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 04/11/2019] [Accepted: 04/11/2019] [Indexed: 12/15/2022]
Abstract
Background and Objectives: The results of the studies show that the intensity and volume of aerobic exercise activity produce different responses of the immune system. This study aims to show how the signaling pathway of the inflammatory NLRP3 complex is influenced by the acute and chronic effects of moderate and high-intensity aerobic exercises in young men. Materials and Methods: Accordingly, 60 healthy (BMI = 23.56 ± 2.67) young (24.4 ± 0.4) students volunteered to participate in the study that was randomly divided into two experimental (n = 20) groups and one control (n = 20) group. The training protocol started with two intensity levels of 50% for a moderate group and 70% of maximum heart rate for high group for 30 min and then continued until reaching 70% (moderate group) and 90% (high group) of the maximum heart rate, respectively. Using Real Time-PCR method, the expression of NLRP3 gene and ELISA- were measured by IL-1β, IL-18. Results: The results showed that acute aerobic exercise with moderate intensity had no significant effect on the expression of NLRP3 gene and serum levels of IL-1β and IL-18 cytokines (p > 0.05) when acute exercise, with high intensity, begins an initiation of the activity of the inflammatory complex with elevated serum levels of IL-1β, IL-18, and NLRP3 gene expression (p < 0.05). In addition, chronic exercise with moderate intensity significantly reduced the expression of NLRP3 gene and serum levels of IL-1β, IL-18 cytokines (p < 0.05). In the case of chronic exercise with high intensity, a significant increase in expression of gene, NLRP3 and serum levels of IL-1β, IL-18 cytokines were observed (p < 0.05). Conclusions: Generally, it can be concluded that chronic exercise with moderate intensity is effective in decreasing the expression of the inflammasome and inflammation.
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The beneficial roles of exercise training via autophagy in neurological diseases and possible mechanisms. Life Sci 2019; 221:130-134. [PMID: 30769113 DOI: 10.1016/j.lfs.2019.02.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 02/04/2019] [Accepted: 02/11/2019] [Indexed: 02/06/2023]
Abstract
Autophagy is a conservative catabolism process, participating in delivering the cytosol and cytosolic components to the lysosome. Abnormal autophagy is related to human pathologies, for instance diabetes, neurodegeneration, cardiovascular, macular degeneration, pulmonary, and cancer. Enormous evidences indicate that autophagy may mediate the cellular pathological condition in the process of neurological diseases. Exercise as a form of physiological stress may cause an adaptation, and autophagy is a necessary process for adaptational response to exercise. Autophagy during exercise may improve neurological function, control tissue maintain tissue integrity, and activate different signals pathway for adaptation. In this review, we summarize the possible mechanisms of exercise training via autophagy in neurological diseases.
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Escobar KA, Cole NH, Mermier CM, VanDusseldorp TA. Autophagy and aging: Maintaining the proteome through exercise and caloric restriction. Aging Cell 2019; 18:e12876. [PMID: 30430746 PMCID: PMC6351830 DOI: 10.1111/acel.12876] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 08/31/2018] [Accepted: 09/28/2018] [Indexed: 12/16/2022] Open
Abstract
Accumulation of dysfunctional and damaged cellular proteins and organelles occurs during aging, resulting in a disruption of cellular homeostasis and progressive degeneration and increases the risk of cell death. Moderating the accrual of these defunct components is likely a key in the promotion of longevity. While exercise is known to promote healthy aging and mitigate age‐related pathologies, the molecular underpinnings of this phenomenon remain largely unclear. However, recent evidences suggest that exercise modulates the proteome. Similarly, caloric restriction (CR), a known promoter of lifespan, is understood to augment intracellular protein quality. Autophagy is an evolutionary conserved recycling pathway responsible for the degradation, then turnover of cellular proteins and organelles. This housekeeping system has been reliably linked to the aging process. Moreover, autophagic activity declines during aging. The target of rapamycin complex 1 (TORC1), a central kinase involved in protein translation, is a negative regulator of autophagy, and inhibition of TORC1 enhances lifespan. Inhibition of TORC1 may reduce the production of cellular proteins which may otherwise contribute to the deleterious accumulation observed in aging. TORC1 may also exert its effects in an autophagy‐dependent manner. Exercise and CR result in a concomitant downregulation of TORC1 activity and upregulation of autophagy in a number of tissues. Moreover, exercise‐induced TORC1 and autophagy signaling share common pathways with that of CR. Therefore, the longevity effects of exercise and CR may stem from the maintenance of the proteome by balancing the synthesis and recycling of intracellular proteins and thus may represent practical means to promote longevity.
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Affiliation(s)
- Kurt A. Escobar
- Department of Kinesiology; California State University, Long Beach; Long Beach California
| | - Nathan H. Cole
- Department of Health, Exercise, & Sports Sciences; University of New Mexico; Albuquerque New Mexico
| | - Christine M. Mermier
- Department of Health, Exercise, & Sports Sciences; University of New Mexico; Albuquerque New Mexico
| | - Trisha A. VanDusseldorp
- Department of Exercise Science & Sports Management; Kennesaw State University; Kennesaw Georgia
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Estébanez B, Moreira OC, Almar M, de Paz JA, Gonzalez-Gallego J, Cuevas MJ. Effects of a resistance-training programme on endoplasmic reticulum unfolded protein response and mitochondrial functions in PBMCs from elderly subjects. Eur J Sport Sci 2019; 19:931-940. [PMID: 30614406 DOI: 10.1080/17461391.2018.1561950] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Aging has been related with a decline in the ability to handle protein folding, which leads to endoplasmic reticulum stress and alterations in unfolded protein response (UPR). Importantly, physical activity could activate the UPR and attenuate or prevent age-induced endoplasmic reticulum (ER) dysfunction. The current study evaluated the effects of a resistance exercise on UPR and mitochondrial functions in peripheral blood mononuclear cells (PBMCs) from elderly subjects. Thirty healthy women and men (age, 72.8, sx- = 2.2 years) were randomized to a training group, which performed an 8-week resistance training programme, or a control group, which followed their daily routines. The phosphorylation of PERK and IRE1, as well as ATF4, and XBP1 protein expression, significantly increased following the training, while expression of BiP, AFT6 and CHOP remain without changes. Additionally, the intervention also induced an increase in PGC-1α and Mfn1 protein levels, while no changes were found in Drp1 expression. Finally, the resistance protocol was not able to activate PINK1/Parkin and Bnip3/Nix pathways. The results obtained seem to indicate that 8-week resistance exercise activates the UPR, stimulates mitochondrial biogenesis, maintains mitochondrial dynamics and prevents mitophagy activation by unfolded proteins in PBMCs from elderly subjects.
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Affiliation(s)
- Brisamar Estébanez
- a Institute of Biomedicine (IBIOMED) , University of León , León , Spain
| | - Osvaldo C Moreira
- a Institute of Biomedicine (IBIOMED) , University of León , León , Spain.,b Institute of Biological Sciences and Health , Federal University of Viçosa - Campus Florestal , Florestal , Brazil
| | - Mar Almar
- a Institute of Biomedicine (IBIOMED) , University of León , León , Spain
| | - José A de Paz
- a Institute of Biomedicine (IBIOMED) , University of León , León , Spain
| | | | - María J Cuevas
- a Institute of Biomedicine (IBIOMED) , University of León , León , Spain
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58
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Estébanez B, de Paz JA, Cuevas MJ, González-Gallego J. Endoplasmic Reticulum Unfolded Protein Response, Aging and Exercise: An Update. Front Physiol 2018; 9:1744. [PMID: 30568599 PMCID: PMC6290262 DOI: 10.3389/fphys.2018.01744] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 11/20/2018] [Indexed: 12/14/2022] Open
Abstract
The endoplasmic reticulum (ER) is a dynamic and multifunctional organelle responsible for protein biosynthesis, folding, assembly and modifications. Loss of protein folding regulation, which leads to unfolded or misfolded proteins accumulation inside the ER lumen, drives ER stress (ERS) and unfolded protein response (UPR) activation. During aging, there is a decline in the ability of the cell to handle protein folding, accumulation and aggregation, and the function of UPR is compromised. There is a progressive failure of the chaperoning systems and a decline in many of its components, so that the UPR activation cannot rescue the ERS. Physical activity has been proposed as a powerful tool against aged-related diseases, which are linked to ERS. Interventional studies have demonstrated that regular exercise is able to decrease oxidative stress and inflammation and reverse mitochondrial and ER dysfunctions. Exercise-induced metabolic stress could activate the UPR since muscle contraction is directly involved in its activation, mediating exercise-induced adaptation responses. In fact, regular moderate-intensity exercise-induced ERS acts as a protective mechanism against current and future stressors. However, biological responses vary according to exercise intensity and therefore induce different degrees of ERS and UPR activation. This article reviews the effects of aging and exercise on ERS and UPR, also analyzing possible changes induced by different types of exercise in elderly subjects.
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Affiliation(s)
| | - José A de Paz
- Institute of Biomedicine (IBIOMED), University of León, León, Spain
| | - María J Cuevas
- Institute of Biomedicine (IBIOMED), University of León, León, Spain
| | - Javier González-Gallego
- Institute of Biomedicine (IBIOMED), University of León, León, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
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Sellami M, Gasmi M, Denham J, Hayes LD, Stratton D, Padulo J, Bragazzi N. Effects of Acute and Chronic Exercise on Immunological Parameters in the Elderly Aged: Can Physical Activity Counteract the Effects of Aging? Front Immunol 2018; 9:2187. [PMID: 30364079 PMCID: PMC6191490 DOI: 10.3389/fimmu.2018.02187] [Citation(s) in RCA: 117] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 09/04/2018] [Indexed: 12/22/2022] Open
Abstract
Immunosenescence is characterized by deterioration of the immune system caused by aging which induces changes to innate and adaptive immunity. Immunosenescence affects function and phenotype of immune cells, such as expression and function of receptors for immune cells which contributes to loss of immune function (chemotaxis, intracellular killing). Moreover, these alterations decrease the response to pathogens, which leads to several age-related diseases including cardiovascular disease, Alzheimer's disease, and diabetes in older individuals. Furthermore, increased risk of autoimmune disease and chronic infection is increased with an aging immune system, which is characterized by a pro-inflammatory environment, ultimately leading to accelerated biological aging. During the last century, sedentarism rose dramatically, with a concomitant increase in certain type of cancers (such as breast cancer, colon, or prostate cancer), and autoimmune disease. Numerous studies on physical activity and immunity, with focus on special populations (i.e., people with diabetes, HIV patients) demonstrate that chronic exercise enhances immunity. However, the majority of previous work has focused on either a pathological population or healthy young adults whilst research in elderly populations is scarce. Research conducted to date has primarily focused on aerobic and resistance exercise training and its effect on immunity. This review focuses on the potential for exercise training to affect the aging immune system. The concept is that some lifestyle strategies such as high-intensity exercise training may prevent disease through the attenuation of immunosenescence. In this context, we take a top-down approach and review the effect of exercise and training on immunological parameters in elderly at rest and during exercise in humans, and how they respond to different modes of training. We highlight the impact of these different exercise modes on immunological parameters, such as cytokine and lymphocyte concentration in elderly individuals.
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Affiliation(s)
- Maha Sellami
- Sport Science Program (SSP), College of Arts and Sciences (QU-CAS), University of Qatar, Doha, Qatar
| | - Maha Gasmi
- Higher Institute of Sport and Physical Education of Ksar Said, Mannouba, Tunisia
| | - Joshua Denham
- School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia
| | - Lawrence D Hayes
- Active Ageing Research Group, Department of Medical and Sport Sciences, University of Cumbria, Lancaster, United Kingdom
| | - Dan Stratton
- Cellular and Molecular Immunology Research Center, London Metropolitan University, London, United Kingdom
| | | | - Nicola Bragazzi
- Department of Health Sciences (DISSAL), Postgraduate School of Public Health, University of Genoa, Genoa, Italy
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60
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Aristizabal Prada ET, Spöttl G, Maurer J, Lauseker M, Koziolek EJ, Schrader J, Grossman A, Pacak K, Beuschlein F, Auernhammer CJ, Nölting S. The role of GSK3 and its reversal with GSK3 antagonism in everolimus resistance. Endocr Relat Cancer 2018; 25:893-908. [PMID: 29895527 PMCID: PMC7439002 DOI: 10.1530/erc-18-0159] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 06/11/2018] [Indexed: 12/11/2022]
Abstract
Pancreatic neuroendocrine tumors (panNETs) are often inoperable at diagnosis. The mTORC1 inhibitor everolimus has been approved for the treatment of advanced NETs. However, the regular development of resistance to everolimus limits its clinical efficacy. We established two independent everolimus-resistant panNET (BON1) cell lines (BON1 RR1, BON1 RR2) to find potential mechanisms of resistance. After 24 weeks of permanent exposure to 10 nM everolimus, BON1 RR1 and BON1 RR2 showed stable resistance with cellular survival rates of 96.70% (IC50 = 5200 nM) and 92.30% (IC50 = 2500 nM), respectively. The control cell line showed sensitivity to 10 nM everolimus with cellular survival declining to 54.70% (IC50 = 34 nM). Both resistant cell lines did not regain sensitivity over time and showed persistent stable resistance after a drug holiday of 13 weeks. The mechanisms of resistance in our cell line model included morphological adaptations, G1 cell cycle arrest associated with reduced CDK1(cdc2) expression and decreased autophagy. Cellular migration potential was increased and indirectly linked to c-Met activation. GSK3 was over-activated in association with reduced baseline IRS-1 protein levels. Specific GSK3 inhibition strongly decreased BON1 RR1/RR2 cell survival. The combination of everolimus with the PI3Kα inhibitor BYL719 re-established everolimus sensitivity through GSK3 inhibition and restoration of autophagy. We suggest that GSK3 over-activation combined with decreased baseline IRS-1 protein levels and decreased autophagy may be a crucial feature of everolimus resistance, and hence, a possible therapeutic target.
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Affiliation(s)
- Elke Tatjana Aristizabal Prada
- Medizinische Klinik und Poliklinik IVInterdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM), Klinikum der Universität München (KUM), Ludwig-Maximilians-University, Munich, Germany
| | - Gerald Spöttl
- Medizinische Klinik und Poliklinik IVInterdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM), Klinikum der Universität München (KUM), Ludwig-Maximilians-University, Munich, Germany
| | - Julian Maurer
- Medizinische Klinik und Poliklinik IVInterdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM), Klinikum der Universität München (KUM), Ludwig-Maximilians-University, Munich, Germany
| | - Michael Lauseker
- Institute for Medical Information SciencesBiometry, and Epidemiology, Campus Grosshadern, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Eva Jolanthe Koziolek
- Department of Nuclear MedicineUniversity Medical Center Charité, Berlin, Germany
- German Cancer Consortium (DKTK)Heidelberg, Germany
- German Cancer Research Center (DKFZ)Heidelberg, Germany
| | - Jörg Schrader
- I. Medizinische Klinik und PoliklinikUniversitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Ashley Grossman
- Oxford Centre for DiabetesEndocrinology and Metabolism, University of Oxford, Oxford, UK
- Royal Free Hospital ENETS Centre of ExcellenceLondon, UK
| | - Karel Pacak
- Eunice Kennedy Shriver National Institute of Child Health and Human DevelopmentNational Institutes of Health, Bethesda, Maryland, USA
| | - Felix Beuschlein
- Medizinische Klinik und Poliklinik IVInterdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM), Klinikum der Universität München (KUM), Ludwig-Maximilians-University, Munich, Germany
- Klinik für EndokrinologieDiabetologie und Klinische Ernährung, Universitätsspital Zürich, Zurich, Switzerland
| | - Christoph Joseph Auernhammer
- Medizinische Klinik und Poliklinik IVInterdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM), Klinikum der Universität München (KUM), Ludwig-Maximilians-University, Munich, Germany
| | - Svenja Nölting
- Medizinische Klinik und Poliklinik IVInterdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM), Klinikum der Universität München (KUM), Ludwig-Maximilians-University, Munich, Germany
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61
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Xie ZY, Xiao ZH, Wang FF. Inhibition of autophagy reverses alcohol-induced hepatic stellate cells activation through activation of Nrf2-Keap1-ARE signaling pathway. Biochimie 2018; 147:55-62. [PMID: 29305174 DOI: 10.1016/j.biochi.2017.12.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 12/28/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND Numerous documents have indicated a critical role of autophagy in alcoholic liver fibrosis (ALF), but few papers have reported its function in hepatic stellate cells (HSCs) activation. The current study aimed to investigate the regulation effect of autophagy in HSCs activation, in further to explore the underlying mechanism involved. METHODS HSC-T6 cells were treated with ethanol, 3-MA (autophagy inhibitor) or rapamycin (autophagy inducer), and cells were also transfected with si-Nrf2 or si-Keap1. Moreover, ALF animal model was established and Nrf-2(-/-), Keap1 (-/-) mice were purchased. The level of autophagy, the expression of α-SMA and CoL1A1, and Nrf2 antioxidant response were evaluated in stellate cells and livers. RESULTS Ethanol treatment in cultured cells increased autophagy, oxidative stress level and promoted HSCs activation. Inhibition of autophagy reversed alcohol-induced HSCs activation and suppressed HSCs oxidative stress. Nrf2-Keap1-ARE pathway was involved in HSCs activation and oxidative stress regulated by autophagy. In addition, through in vivo study, we found that inhibition of autophagy could alleviate alcoholic fatty liver injury in ALF model mice and Nrf2 signaling was involved in autophagy regulated HSCs activation. CONCLUSION These data implicated mechanisms underlying autophagy in regulating the fibrogenic response in HSCs activation.
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Affiliation(s)
- Zheng-Yuan Xie
- Department of Gastroenterology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China.
| | - Zhi-Hua Xiao
- Department of Gastroenterology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Fen-Fen Wang
- Department of Gastroenterology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
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62
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Cardinale DA, Lilja M, Mandić M, Gustafsson T, Larsen FJ, Lundberg TR. Resistance Training with Co-ingestion of Anti-inflammatory Drugs Attenuates Mitochondrial Function. Front Physiol 2017; 8:1074. [PMID: 29311990 PMCID: PMC5742251 DOI: 10.3389/fphys.2017.01074] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 12/06/2017] [Indexed: 01/09/2023] Open
Abstract
Aim: The current study aimed to examine the effects of resistance exercise with concomitant consumption of high vs. low daily doses of non-steroidal anti-inflammatory drugs (NSAIDs) on mitochondrial oxidative phosphorylation in skeletal muscle. As a secondary aim, we compared the effects of eccentric overload with conventional training. Methods: Twenty participants were randomized to either a group taking high doses (3 × 400 mg/day) of ibuprofen (IBU; 27 ± 5 year; n = 11) or a group ingesting a low dose (1 × 75 mg/day) of acetylsalicylic acid (ASA; 26 ± 4 year; n = 9) during 8 weeks of supervised knee extensor resistance training. Each of the subject's legs were randomized to complete the training program using either a flywheel (FW) device emphasizing eccentric overload, or a traditional weight stack machine (WS). Maximal mitochondrial oxidative phosphorylation (CI+IIP) from permeabilized skeletal muscle bundles was assessed using high-resolution respirometry. Citrate synthase (CS) activity was assessed using spectrophotometric techniques and mitochondrial protein content using western blotting. Results: After training, CI+IIP decreased (P < 0.05) in both IBU (23%) and ASA (29%) with no difference across medical treatments. Although CI+IIP decreased in both legs, the decrease was greater (interaction p = 0.015) in WS (33%, p = 0.001) compared with FW (19%, p = 0.078). CS activity increased (p = 0.027) with resistance training, with no interactions with medical treatment or training modality. Protein expression of ULK1 increased with training in both groups (p < 0.001). The increase in quadriceps muscle volume was not correlated with changes in CI+IIP (R = 0.16). Conclusion: These results suggest that 8 weeks of resistance training with co-ingestion of anti-inflammatory drugs reduces mitochondrial function but increases mitochondrial content. The observed changes were not affected by higher doses of NSAIDs consumption, suggesting that the resistance training intervention was the prime mediator of the decreased mitochondrial phosphorylation. Finally, we noted that flywheel resistance training, emphasizing eccentric overload, rescued some of the reduction in mitochondrial function seen with conventional resistance training.
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Affiliation(s)
- Daniele A Cardinale
- Åstrand Laboratory, The Swedish School of Sport and Health Sciences, Stockholm, Sweden.,Elite Performance Centre, Bosön-Swedish Sports Confederation, Lidingö, Sweden
| | - Mats Lilja
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - Mirko Mandić
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - Thomas Gustafsson
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - Filip J Larsen
- Åstrand Laboratory, The Swedish School of Sport and Health Sciences, Stockholm, Sweden
| | - Tommy R Lundberg
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
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63
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Freitas HR, Ferreira GDC, Trevenzoli IH, Oliveira KDJ, de Melo Reis RA. Fatty Acids, Antioxidants and Physical Activity in Brain Aging. Nutrients 2017; 9:nu9111263. [PMID: 29156608 PMCID: PMC5707735 DOI: 10.3390/nu9111263] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 11/11/2017] [Accepted: 11/14/2017] [Indexed: 12/25/2022] Open
Abstract
Polyunsaturated fatty acids and antioxidants are important mediators in the central nervous system. Lipid derivatives may control the production of proinflammatory agents and regulate NF-κB activity, microglial activation, and fatty acid oxidation; on the other hand, antioxidants, such as glutathione and ascorbate, have been shown to signal through transmitter receptors and protect against acute and chronic oxidative stress, modulating the activity of different signaling pathways. Several authors have investigated the role of these nutrients in the brains of the young and the aged in degenerative diseases such as Alzheimer’s and Parkinson’s, and during brain aging due to adiposity- and physical inactivity-mediated metabolic disturbances, chronic inflammation, and oxidative stress. Through a literature review, we aimed to highlight recent data on the role of adiposity, fatty acids, antioxidants, and physical inactivity in the pathophysiology of the brain and in the molecular mechanisms of senescence. Data indicate the complexity and necessity of endogenous/dietary antioxidants for the maintenance of redox status and the control of neuroglial signaling under stress. Recent studies also indicate that omega-3 and -6 fatty acids act in a competitive manner to generate mediators for energy metabolism, influencing feeding behavior, neural plasticity, and memory during aging. Finding pharmacological or dietary resources that mitigate or prevent neurodegenerative affections continues to be a great challenge and requires additional effort from researchers, clinicians, and nutritionists in the field.
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Affiliation(s)
- Hércules Rezende Freitas
- Laboratory of Neurochemistry, Institute of Biophysics Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil.
| | - Gustavo da Costa Ferreira
- Laboratory of Neurochemistry, Institute of Biophysics Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil.
- Laboratory of Neuroenergetics and Inborn Errors of Metabolism, Institute of Medical Biochemistry Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil.
| | - Isis Hara Trevenzoli
- Laboratory of Molecular Endocrinology, Institute of Biophysics Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil.
| | - Karen de Jesus Oliveira
- Laboratory of Endocrine Physiology and Metabology, Biomedical Institute, Universidade Federal Fluminense, Niterói 24210-130, Brazil.
| | - Ricardo Augusto de Melo Reis
- Laboratory of Neurochemistry, Institute of Biophysics Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil.
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Ziaaldini MM, Marzetti E, Picca A, Murlasits Z. Biochemical Pathways of Sarcopenia and Their Modulation by Physical Exercise: A Narrative Review. Front Med (Lausanne) 2017; 4:167. [PMID: 29046874 PMCID: PMC5632757 DOI: 10.3389/fmed.2017.00167] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 09/21/2017] [Indexed: 12/15/2022] Open
Abstract
Aging is a complex process characterized by progressive multisystem derangement predisposing individuals to increased risk of developing negative health outcomes. Sarcopenia is the age-related decline of muscle mass and function/strength and represents a highly prevalent correlate of aging. Several factors have been indicated to play a role in the onset and progression of sarcopenia; however, its pathophysiology is still unclear. Physical exercise is to date one of the few strategies able to improve muscle health in old age through multiple metabolic and transcriptional adaptations. Although the benefits of different exercise modalities on the function and structure of aged myocytes is acknowledged, the cellular and molecular mechanisms underlying such effects are not yet fully identified. Here, we briefly overview the current knowledge on the biochemical pathways associated with the onset and progression of sarcopenia. We subsequently describe the effects of exercise on relevant signaling pathways involved in sarcopenia pathophysiology.
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Affiliation(s)
| | - Emanuele Marzetti
- Department of Geriatrics, Neurosciences and Orthopedics, Catholic University of the Sacred Heart, Rome, Italy
| | - Anna Picca
- Department of Geriatrics, Neurosciences and Orthopedics, Catholic University of the Sacred Heart, Rome, Italy
| | - Zsolt Murlasits
- Sport Science Program, College of Arts and Sciences, Qatar University, Doha, Qatar
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Mitochondrial Function and Mitophagy in the Elderly: Effects of Exercise. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:2012798. [PMID: 28900532 PMCID: PMC5576425 DOI: 10.1155/2017/2012798] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 06/04/2017] [Accepted: 07/06/2017] [Indexed: 12/22/2022]
Abstract
Aging is a natural, multifactorial and multiorganic phenomenon wherein there are gradual physiological and pathological changes over time. Aging has been associated with a decrease of autophagy capacity and mitochondrial functions, such as biogenesis, dynamics, and mitophagy. These processes are essential for the maintenance of mitochondrial structural integrity and, therefore, for cell life, since mitochondrial dysfunction leads to an impairment of energy metabolism and increased production of reactive oxygen species, which consequently trigger mechanisms of cellular senescence and apoptotic cell death. Moreover, reduced mitochondrial function can contribute to age-associated disease phenotypes in model organisms and humans. Literature data show beneficial effects of exercise on the impairment of mitochondrial biogenesis and dynamics and on the decrease in the mitophagic capacity associated to aging. Thus, exercise could have effects on the major cell signaling pathways that are involved in the mitochondria quality and quantity control in the elderly. Although it is known that several exercise protocols are able to modify the activity and turnover of mitochondria, further studies are necessary in order to better identify the mechanisms of interaction between mitochondrial functions, aging, and physical activity, as well as to analyze possible factors influencing these processes.
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Apigenin Alleviates Endotoxin-Induced Myocardial Toxicity by Modulating Inflammation, Oxidative Stress, and Autophagy. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:2302896. [PMID: 28828145 PMCID: PMC5554558 DOI: 10.1155/2017/2302896] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/08/2017] [Accepted: 06/15/2017] [Indexed: 12/19/2022]
Abstract
Apigenin, a component in daily diets, demonstrates antioxidant and anti-inflammatory properties. Here, we intended to explore the mechanism of apigenin-mediated endotoxin-induced myocardial injury and its role in the interplay among inflammation, oxidative stress, and autophagy. In our lipopolysaccharide- (LPS-) induced myocardial injury model, apigenin ameliorated cardiac injury (lactate dehydrogenase (LDH) and creatine kinase (CK)), cell death (TUNEL staining, DNA fragmentation, and PARP activity), and tissue damage (cardiac troponin I (cTnI) and cardiac myosin light chain-1 (cMLC1)) and improved cardiac function (ejection fraction (EF) and end diastolic left ventricular inner dimension (LVID)). Apigenin also alleviated endotoxin-induced myocardial injury by modulating oxidative stress (nitrotyrosine and protein carbonyl) and inflammatory cytokines (TNF-α, IL-1β, MIP-1α, and MIP-2) along with their master regulator NFκB. Apigenin modulated redox homeostasis, and its anti-inflammatory role might be associated with its ability to control autophagy. Autophagy (determined by LAMP1, ATG5, and p62), its transcriptional regulator transcription factor EB (TFEB), and downstream target genes including vacuolar protein sorting-associated protein 11 (Vps11) and microtubule-associated proteins 1A/1B light chain 3B (Map1lc3) were modulated by apigenin. Thus, our study demonstrated that apigenin may lead to potential development of new target in sepsis treatment or other myocardial oxidative and/or inflammation-induced injuries.
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Yue C, Yang X, Li J, Chen X, Zhao X, Chen Y, Wen Y. Trimethylamine N-oxide prime NLRP3 inflammasome via inhibiting ATG16L1-induced autophagy in colonic epithelial cells. Biochem Biophys Res Commun 2017. [PMID: 28629999 DOI: 10.1016/j.bbrc.2017.06.075] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Recently, the intricate relationship between Trimethylamine N-oxide (TMAO) and inflammatory bowel disease (IBD) is of growing interest. The NLRP3 inflammasome plays crucial roles in gut homeostasis and determining the severity of inflammation in IBD, however, the precise roles of the NLRP3 inflammasome in IBD are still debated. ATG16L1 mediates the cellular degradative process of autophagy and is considered a critical regulator of inflammation based on its genetic association with IBD. Whether TMAO prime NLRP3 inflammasome via ATG16L1-induced autophagy remains unclear. This study observed the expression of ATG16L1, LC3-II and p62 and activation of NLRP3 inflammasome stimulated by TMAO in fetal human colon cells (FHCs), aiming to elucidate the mechanism by which the TMAO may contribute to colonic epithelial inflammation. Our results demonstrated that TMAO significantly inhibited ATG16L1, LC3-II and p62 expression, and triggered the activated NLRP3 inflammasome and production of ROS in a dose- and time-dependent manner. Furthermore, TMAO-mediated effects were observably reversed by over-expression ATG16L1 and siRNA-mediated knockdown NLRP3.The present results support the hypothesis that TMAO may be involved in the pathogenesis of IBD by impacting ATG16L1-induced autophagy and activating NLRP3 inflammasome, suggesting a potential therapeutic targets for the treatment of IBD and TMAO-associated complications.
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Affiliation(s)
- Chaochi Yue
- Graduate School of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 610075, China; Department of Traditional Chinese Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Xiangdong Yang
- Chengdu Rectum Faculty Hospital, Chengdu, Sichuan, 610015, China.
| | - Jun Li
- Department of Traditional Chinese Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Xiaochao Chen
- Chengdu Rectum Faculty Hospital, Chengdu, Sichuan, 610015, China
| | - Xiangdong Zhao
- Department of Traditional Chinese Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Ye Chen
- Department of Traditional Chinese Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Yong Wen
- Department of Traditional Chinese Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
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Plaza-Zabala A, Sierra-Torre V, Sierra A. Autophagy and Microglia: Novel Partners in Neurodegeneration and Aging. Int J Mol Sci 2017; 18:E598. [PMID: 28282924 PMCID: PMC5372614 DOI: 10.3390/ijms18030598] [Citation(s) in RCA: 225] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 02/28/2017] [Accepted: 03/05/2017] [Indexed: 02/07/2023] Open
Abstract
Autophagy is emerging as a core regulator of Central Nervous System (CNS) aging and neurodegeneration. In the brain, it has mostly been studied in neurons, where the delivery of toxic molecules and organelles to the lysosome by autophagy is crucial for neuronal health and survival. However, we propose that the (dys)regulation of autophagy in microglia also affects innate immune functions such as phagocytosis and inflammation, which in turn contribute to the pathophysiology of aging and neurodegenerative diseases. Herein, we first describe the basic concepts of autophagy and its regulation, discuss key aspects for its accurate monitoring at the experimental level, and summarize the evidence linking autophagy impairment to CNS senescence and disease. We focus on acute, chronic, and autoimmunity-mediated neurodegeneration, including ischemia/stroke, Alzheimer's, Parkinson's, and Huntington's diseases, and multiple sclerosis. Next, we describe the actual and potential impact of autophagy on microglial phagocytic and inflammatory function. Thus, we provide evidence of how autophagy may affect microglial phagocytosis of apoptotic cells, amyloid-β, synaptic material, and myelin debris, and regulate the progression of age-associated neurodegenerative diseases. We also discuss data linking autophagy to the regulation of the microglial inflammatory phenotype, which is known to contribute to age-related brain dysfunction. Overall, we update the current knowledge of autophagy and microglia, and highlight as yet unexplored mechanisms whereby autophagy in microglia may contribute to CNS disease and senescence.
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Affiliation(s)
| | | | - Amanda Sierra
- Achucarro Basque Center for Neuroscience, 48170 Zamudio, Spain.
- Department of Neurosciences, University of the Basque Country EHU/UPV, 48940 Leioa, Spain.
- Ikerbasque Foundation, 48013 Bilbao, Spain.
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