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Valdes O, Inzulza S, Collao N, Garcia-Vicencio S, Tufano JJ, Earp J, Venegas M, Peñailillo L. Eccentric Cycling Is an Alternative to Nordic Hamstring Exercise to Increase the Neuromuscular Function of Knee Flexors in Untrained Men. J Strength Cond Res 2023; 37:2158-2166. [PMID: 37883395 DOI: 10.1519/jsc.0000000000004529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
ABSTRACT Valdes, O, Inzulza, S, Collao, N, Garcia-Vicencio, S, Tufano, JJ, Earp, J, Venegas, M, and Peñailillo, L. Eccentric cycling is an alternative to Nordic hamstring exercise to increase the neuromuscular function of knee flexors in untrained men. J Strength Cond Res 37(11): 2158-2166, 2023-Nordic hamstring exercise (NHE) has been proposed to reduce knee flexor (KF) injuries. However, submaximal alternatives to NHE are necessary for the clinical or weaker population. The aim of this study was to compare the effects of Nordic hamstring training (NHT) and eccentric cycling (ECC) training on the neuromuscular function of the KF. Twenty healthy men (27.7 ± 3.5 years) were randomly assigned into 2 groups that performed 10 training sessions (2-3 sessions·week-1) of either NHT (n = 10) or ECC (n = 10). Maximal voluntary isometric contraction of the KF and knee extensor (KE) muscles (MVICKF and MVICKE) was measured, and the hamstring/quadriceps strength (H/Q) ratio was calculated. Furthermore, changes in NHE maximum reaction force (NHE-MRFKF), NHE break-point angle (NHE-BPA), and muscle activity of the semitendinosus (STEMG) and biceps femoris (BFEMG) during the NHE after the interventions were compared. Although no group × time effects were observed (p = 0.09-0.70), but time effects were found for all variables. Pairwise comparisons revealed that MVICKF (+16.9%; p = 0.02), H/Q ratio (+11.8%; p = 0.01), NHE-MRFKF (+19.8%; p = 0.005), and NHE-BPA (+30.8%; p = 0.001) increased after ECC, whereas NHE-MRFKF (+9.7%; p = 0.003), NHE-BPA (+35.5%; p = 0.0002), and STEMG (+33.7%; p = 0.02) increased after NHT. A group × time effect was observed (p = 0.003) in BFEMG, revealing an increase only after ECC (+41.1%; p < 0.0001). Similar neuromuscular adaptations were found after both training modalities. Therefore, ECC provides similar adaptations as NHT and may serve as an alternative form of KF training for those unable to perform NHE.
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Affiliation(s)
- Omar Valdes
- Exercise and Rehabilitation Sciences Institute, School of Physical Therapy, Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago, Chile
- Faculty of Health Sciences, Universidad de Las Americas, Santiago, Chile
| | - Sixto Inzulza
- School of Kinesiology, Faculty of Medicine, Universidad Finis Terrae, Santiago, Chile
| | - Nicolas Collao
- School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - Sebastián Garcia-Vicencio
- Human Motion Analysis, Humanfab, Aix-en-Provence, France
- LBEPS, Univ Evry, IRBA, Université Paris Saclay, Evry, France
| | - James J Tufano
- Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic
| | - Jacob Earp
- Department of Kinesiology, Faculty of Arts and Physical Education, Universidad Metropolitana de Ciencias de La Educación, Santiago, Chile
| | - Mauricio Venegas
- School of Kinesiology, Faculty of Medicine, Universidad Finis Terrae, Santiago, Chile
- Department of Kinesiology, Faculty of Arts and Physical Education, Universidad Metropolitana de Ciencias de La Educación, Santiago, Chile
| | - Luis Peñailillo
- Exercise and Rehabilitation Sciences Institute, School of Physical Therapy, Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago, Chile
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Collao N, D'Souza D, Messeiller L, Pilon E, Lloyd J, Larkin J, Ngu M, Cuillerier A, Green AE, Menzies KJ, Burelle Y, De Lisio M. Radiation induces long-term muscle fibrosis and promotes a fibrotic phenotype in fibro-adipogenic progenitors. J Cachexia Sarcopenia Muscle 2023; 14:2335-2349. [PMID: 37671686 PMCID: PMC10570115 DOI: 10.1002/jcsm.13320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/29/2023] [Accepted: 07/24/2023] [Indexed: 09/07/2023] Open
Abstract
BACKGROUND Radiation-induced muscle pathology, characterized by muscle atrophy and fibrotic tissue accumulation, is the most common debilitating late effect of therapeutic radiation exposure particularly in juvenile cancer survivors. In healthy muscle, fibro/adipogenic progenitors (FAPs) are required for muscle maintenance and regeneration, while in muscle pathology FAPs are precursors for exacerbated extracellular matrix deposition. However, the role of FAPs in radiation-induced muscle pathology has not previously been explored. METHODS Four-week-old Male CBA or C57Bl/6J mice received a single dose (16 Gy) of irradiation (IR) to a single hindlimb with the shielded contralateral limb (CLTR) serving as a non-IR control. Mice were sacrificed 3, 7, 14 (acute IR response), and 56 days post-IR (long-term IR response). Changes in skeletal muscle morphology, myofibre composition, muscle niche cellular dynamics, DNA damage, proliferation, mitochondrial respiration, and metabolism and changes in progenitor cell fate where assessed. RESULTS Juvenile radiation exposure resulted in smaller myofibre cross-sectional area, particularly in type I and IIA myofibres (P < 0.05) and reduced the proportion of type I myofibres (P < 0.05). Skeletal muscle fibrosis (P < 0.05) was evident at 56 days post-IR. The IR-limb had fewer endothelial cells (P < 0.05) and fibro-adipogenic progenitors (FAPs) (P < 0.05) at 56 days post-IR. Fewer muscle satellite (stem) cells were detected at 3 and 56 days in the IR-limb (P < 0.05). IR induced FAP senescence (P < 0.05), increased their fibrogenic differentiation (P < 0.01), and promoted their glycolytic metabolism. Further, IR altered the FAP secretome in a manner that impaired muscle satellite (stem) cell differentiation (P < 0.05) and fusion (P < 0.05). CONCLUSIONS Our study suggests that following juvenile radiation exposure, FAPs contribute to long-term skeletal muscle atrophy and fibrosis. These findings provide rationale for investigating FAP-targeted therapies to ameliorate the negative late effects of radiation exposure in skeletal muscle.
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Affiliation(s)
- Nicolas Collao
- School of Human Kinetics, Faculty of Health ScienceUniversity of OttawaOttawaCanada
- Éric Poulin Centre for Neuromuscular DiseaseUniversity of OttawaOttawaCanada
| | - Donna D'Souza
- School of Human Kinetics, Faculty of Health ScienceUniversity of OttawaOttawaCanada
| | - Laura Messeiller
- School of Human Kinetics, Faculty of Health ScienceUniversity of OttawaOttawaCanada
| | - Evan Pilon
- School of Human Kinetics, Faculty of Health ScienceUniversity of OttawaOttawaCanada
| | - Jessica Lloyd
- School of Human Kinetics, Faculty of Health ScienceUniversity of OttawaOttawaCanada
| | - Jillian Larkin
- School of Human Kinetics, Faculty of Health ScienceUniversity of OttawaOttawaCanada
| | - Matthew Ngu
- School of Human Kinetics, Faculty of Health ScienceUniversity of OttawaOttawaCanada
| | - Alexanne Cuillerier
- Interdisciplinary School of Health SciencesUniversity of OttawaOttawaCanada
- Department of Biochemistry, Microbiology and Immunology, Ottawa Institute of Systems BiologyUniversity of OttawaOttawaCanada
| | - Alexander E. Green
- Éric Poulin Centre for Neuromuscular DiseaseUniversity of OttawaOttawaCanada
- Interdisciplinary School of Health SciencesUniversity of OttawaOttawaCanada
- Department of Biochemistry, Microbiology and Immunology, Ottawa Institute of Systems BiologyUniversity of OttawaOttawaCanada
| | - Keir J. Menzies
- Éric Poulin Centre for Neuromuscular DiseaseUniversity of OttawaOttawaCanada
- Interdisciplinary School of Health SciencesUniversity of OttawaOttawaCanada
- Department of Biochemistry, Microbiology and Immunology, Ottawa Institute of Systems BiologyUniversity of OttawaOttawaCanada
| | - Yan Burelle
- Interdisciplinary School of Health SciencesUniversity of OttawaOttawaCanada
| | - Michael De Lisio
- School of Human Kinetics, Faculty of Health ScienceUniversity of OttawaOttawaCanada
- Éric Poulin Centre for Neuromuscular DiseaseUniversity of OttawaOttawaCanada
- Department of Cellular and Molecular Medicine, Regenerative Medicine ProgramUniversity of OttawaOttawaCanada
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Collao N, Sanders O, Caminiti T, Messeiller L, De Lisio M. Resistance and endurance exercise training improves muscle mass and the inflammatory/fibrotic transcriptome in a rhabdomyosarcoma model. J Cachexia Sarcopenia Muscle 2023; 14:781-793. [PMID: 36797054 PMCID: PMC10067492 DOI: 10.1002/jcsm.13185] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 12/14/2022] [Accepted: 01/16/2023] [Indexed: 02/18/2023] Open
Abstract
BACKGROUND Rhabdomyosarcoma (RMS) is an aggressive soft tissue sarcoma that most often develops in children. Chemoradiation therapy is a standard treatment modality; however, the detrimental long-term skeletal muscle consequences of this therapy in juvenile cancer survivors include muscle atrophy and fibrosis resulting in decreased physical performance. Using a novel model of murine resistance and endurance exercise training, we investigate its role in preventing the long-term effects of juvenile RMS plus therapy. METHODS Four-week-old male (n = 10) and female (n = 10) C57Bl/6J mice were injected with M3-9-M RMS cell into the left gastrocnemius with the right limb serving as an internal control (CON). Mice received a systemic vincristine injection and then five doses of 4.8 Gy of gamma radiation localized to the left hindlimb (RMS + Tx). Mice were then randomly divided into either sedentary (SED) or resistance and endurance exercise training (RET) groups. Changes in exercise performance, body composition, myocellular adaptations and the inflammatory/fibrotic transcriptome were assessed. RESULTS RET improved endurance performance (P < 0.0001) and body composition (P = 0.0004) compared to SED. RMS + Tx resulted in significantly lower muscle weight (P = 0.015) and significantly smaller myofibre cross-sectional area (CSA) (P = 0.014). Conversely, RET resulted in significantly higher muscle weight (P = 0.030) and significantly larger Type IIA (P = 0.014) and IIB (P = 0.015) fibre CSA. RMS + Tx resulted in significantly more muscle fibrosis (P = 0.028), which was not prevented by RET. RMS + Tx resulted in significantly fewer mononuclear cells (P < 0.05) and muscle satellite (stem) cells (MuSCs) (P < 0.05) and significantly more immune cells (P < 0.05) than CON. RET resulted in significantly more fibro-adipogenic progenitors (P < 0.05), a trend for more MuSCs (P = 0.076) than SED and significantly more endothelial cells specifically in the RMS + Tx limb. Transcriptomic changes revealed significantly higher expression of inflammatory and fibrotic genes in RMS + Tx, which was prevented by RET. In the RMS + Tx model, RET also significantly altered expression of genes involved in extracellular matrix turnover. CONCLUSIONS Our study suggests that RET preserves muscle mass and performance in a model of juvenile RMS survivorship while partially restoring cellular dynamics and the inflammatory and fibrotic transcriptome.
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Affiliation(s)
- Nicolas Collao
- School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - Olivia Sanders
- School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - Taylor Caminiti
- School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - Laura Messeiller
- School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - Michael De Lisio
- School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada.,Department of Cellular and Molecular Medicine, Regenerative Medicine Program, University of Ottawa, Ottawa, Ontario, Canada
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Binet ER, McKenna CF, Salvador AF, Martinez IG, Alamilla RA, Collao N, Bodnariuc G, Khan NA, Paluska SA, Burd NA, De Lisio M. Sex-based comparisons of muscle cellular adaptations after 10 weeks of progressive resistance training in middle-aged adults. J Appl Physiol (1985) 2023; 134:116-129. [PMID: 36454678 DOI: 10.1152/japplphysiol.00274.2022] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Resistance training combined with adequate protein intake supports skeletal muscle strength and hypertrophy. These adaptations are supported by the action of muscle stem cells (MuSCs), which are regulated, in part, by fibro-adipogenic progenitors (FAPs) and circulating factors delivered through capillaries. It is unclear if middle-aged males and females have similar adaptations to resistance training at the cellular level. To address this gap, 27 (13 males, 14 females) middle-aged (40-64 yr) adults participated in 10 wk of whole body resistance training with dietary counseling. Muscle biopsies were collected from the vastus lateralis pre- and posttraining. Type II fiber cross-sectional area increased similarly with training in both sexes (P = 0.014). MuSC content was not altered with training; however, training increased PDGFRα+/CD90+ FAP content (P < 0.0001) and reduced PDGFRα+/CD90- FAP content (P = 0.044), independent of sex. The number of CD31+ capillaries per fiber also increased similarly in both sexes (P < 0.05). These results suggest that muscle fiber hypertrophy, stem/progenitor cell, and capillary adaptations are similar between middle-aged males and females in response to whole body resistance training.NEW & NOTEWORTHY We demonstrate that resistance training-induced increases in fiber hypertrophy, FAP content, and capillarization are similar between middle-aged males and females.
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Affiliation(s)
- Emileigh R Binet
- School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - Colleen F McKenna
- Division of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, Illinois
| | - Amadeo F Salvador
- Department of Kinesiology and Community Health, University of Illinois Urbana-Champaign, Urbana, Illinois
| | - Isabel G Martinez
- Department of Kinesiology and Community Health, University of Illinois Urbana-Champaign, Urbana, Illinois
| | - Rafael A Alamilla
- Department of Kinesiology and Community Health, University of Illinois Urbana-Champaign, Urbana, Illinois
| | - Nicolas Collao
- School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - Giana Bodnariuc
- School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - Naiman A Khan
- Division of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, Illinois.,Department of Kinesiology and Community Health, University of Illinois Urbana-Champaign, Urbana, Illinois
| | - Scott A Paluska
- Department of Family Medicine, University of Illinois Urbana-Champaign, Urbana, Illinois
| | - Nicholas A Burd
- Division of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, Illinois.,Department of Kinesiology and Community Health, University of Illinois Urbana-Champaign, Urbana, Illinois
| | - Michael De Lisio
- School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada.,Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada
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Vanhie JJ, Kim W, Ek Orloff L, Ngu M, Collao N, De Lisio M. The role of exercise-and high fat diet-induced bone marrow extracellular vesicles in stress hematopoiesis. Front Physiol 2022; 13:1054463. [PMID: 36505084 PMCID: PMC9728614 DOI: 10.3389/fphys.2022.1054463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 11/07/2022] [Indexed: 11/24/2022] Open
Abstract
Exercise and obesity regulate hematopoiesis, in part through alterations in cellular and soluble components of the bone marrow niche. Extracellular vesicles (EVs) are components of the bone marrow niche that regulate hematopoiesis; however, the role of exercise training or obesity induced EVs in regulating hematopoiesis remains unknown. To address this gap, donor EVs were isolated from control diet-fed, sedentary mice (CON-SED), control diet-fed exercise trained mice (CON-EX), high fat diet-fed, sedentary mice (HFD-SED), and high fat diet-fed, exercise trained mice (HFD-EX) and injected into recipient mice undergoing stress hematopoiesis. Hematopoietic and niche cell populations were quantified, and EV miRNA cargo was evaluated. EV content did not differ between the four groups. Mice receiving HFD-EX EVs had fewer hematopoietic stem cells (HSCs) (p < 0.01), long-term HSC (p < 0.05), multipotent progenitors (p < 0.01), common myeloid progenitors (p<0.01), common lymphoid progenitors (p < 0.01), and granulocyte-macrophage progenitors (p < 0.05), compared to mice receiving HFD-SED EVs. Similarly, mice receiving EX EVs had fewer osteoprogenitor cells compared to SED (p < 0.05) but enhanced mesenchymal stromal cell (MSC) osteogenic differentiation in vitro (p < 0.05) compared to SED EVs. HFD EVs enhanced mesenchymal stromal cell (MSC) adipogenesis in vitro (p < 0.01) compared to CON EVs. HFD-EX EVs had lower microRNA-193 and microRNA-331-5p content, microRNAs implicated in inhibiting osteogenesis and leukemic cell expansion respectively, compared to HFD-SED EVs. The results identify alterations in EV cargo as a novel mechanism by which exercise training alters stress hematopoiesis and the bone marrow niche.
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Affiliation(s)
- James J. Vanhie
- School of Human Kinetics, Faculty of Health Sciences, Ottawa, ON, Canada
| | - Wooseok Kim
- School of Human Kinetics, Faculty of Health Sciences, Ottawa, ON, Canada
| | - Lisa Ek Orloff
- School of Human Kinetics, Faculty of Health Sciences, Ottawa, ON, Canada
| | - Matthew Ngu
- School of Human Kinetics, Faculty of Health Sciences, Ottawa, ON, Canada
| | - Nicolas Collao
- School of Human Kinetics, Faculty of Health Sciences, Ottawa, ON, Canada
| | - Michael De Lisio
- School of Human Kinetics, Faculty of Health Sciences, Ottawa, ON, Canada,Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada,*Correspondence: Michael De Lisio,
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Collao N, Akohene-Mensah P, Nallabelli J, Binet ER, Askarian A, Lloyd J, Niemiro GM, Beals JW, van Vliet S, Rajgara R, Saleh A, Wiper-Bergeron N, Paluska SA, Burd NA, De Lisio M. The Role of L-type Amino Acid Transporter 1 (Slc7a5) During In Vitro Myogenesis. Am J Physiol Cell Physiol 2022; 323:C595-C605. [PMID: 35848618 DOI: 10.1152/ajpcell.00162.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Satellite cells are required for muscle regeneration, remodeling, and repair through their activation, proliferation, and differentiation; however, how dietary factors regulate this process remains poorly understood. The L-Type amino acid transporter 1 (LAT1) transports amino acids, such as leucine, into mature myofibers, which then stimulates protein synthesis and anabolic signaling. However, whether LAT1 is expressed on myoblasts and is involved in regulating myogenesis is unknown. The aim of this study was to characterize the expression and functional relevance of LAT1 during different stages of myogenesis and in response to growth and atrophic conditions in vitro. We determined that LAT1 is expressed by C2C12 and human primary myoblasts, and its gene expression is lower during differentiation (p<0.05). Pharmacological inhibition and genetic knockdown of LAT1 impaired myoblast viability, differentiation, and fusion (all p<0.05). LAT1 protein content in C2C12 myoblasts was not significantly altered in response to different leucine concentrations in cell culture media or in two in vitro atrophy models. However, LAT1 content was decreased in myotubes under atrophic conditions in vitro (p<0.05). These findings indicate that LAT1 is stable throughout myogenesis and in response to several in vitro conditions that induce muscle remodeling. Further, amino acid transport through LAT1 is required for normal myogenesis in vitro.
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Affiliation(s)
- Nicolas Collao
- School of Human Kinetics, University of Ottawa, Ottawa, ON, Canada
| | | | - Julian Nallabelli
- Departments of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Emileigh R Binet
- School of Human Kinetics, University of Ottawa, Ottawa, ON, Canada
| | - Ali Askarian
- School of Human Kinetics, University of Ottawa, Ottawa, ON, Canada
| | - Jessica Lloyd
- School of Human Kinetics, University of Ottawa, Ottawa, ON, Canada
| | - Grace M Niemiro
- Departments of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Joseph W Beals
- Departments of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Stephan van Vliet
- Departments of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Rashida Rajgara
- Department of Cellular and Molecular Medicine and Centre on Neuromuscular Disease, University of Ottawa, Ottawa, ON, Canada
| | - Aisha Saleh
- Department of Cellular and Molecular Medicine and Centre on Neuromuscular Disease, University of Ottawa, Ottawa, ON, Canada
| | - Nadine Wiper-Bergeron
- Department of Cellular and Molecular Medicine and Centre on Neuromuscular Disease, University of Ottawa, Ottawa, ON, Canada
| | - Scott A Paluska
- Departments of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Nicholas A Burd
- Departments of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Michael De Lisio
- School of Human Kinetics, University of Ottawa, Ottawa, ON, Canada.,Departments of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, United States.,Department of Cellular and Molecular Medicine and Centre on Neuromuscular Disease, University of Ottawa, Ottawa, ON, Canada
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Roubos S, D'Souza D, Hernández-Saavedra D, Xu G, Collao N, Emmons R, Larkin J, Lloyd J, Vanhie JJ, Pan YX, Chen H, De Lisio M. Weight loss with exercise improves muscle architecture and progenitor cell populations compared with weight loss alone in mice with preneoplastic colorectal lesions. Appl Physiol Nutr Metab 2021; 46:837-845. [PMID: 33577399 DOI: 10.1139/apnm-2020-0956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Weight loss and exercise reduce colorectal cancer (CRC) risk in persons with obesity. Whether weight loss and exercise effect myofiber characteristics and muscle stem/progenitor cell populations in mice with preneoplastic colorectal lesions, a model of CRC risk, is unknown. To address this gap, male C57Bl/6J mice were fed a high-fat diet (HFD) to induce obesity or a control (CON) diet prior to azoxymethane injection to induce preneoplastic colorectal lesions. The HFD group was then randomized to weight loss conditions that included (1) switching to the CON diet only (HFD-SED) or switching to the CON diet with treadmill exercise training (HFD-EX). Average myofiber cross-sectional area was not different between groups. There were more smaller-sized fibres in HFD-EX (p < 0.05 vs. CON), and more fibrosis in HFD-SED (p < 0.05 vs. HFD-EX and CON). There was a trend for more committed (Pax7+MyoD+) myoblasts (p = 0.059) and more fibro-adipogenic progenitors in HFD-EX (p < 0.05 vs. CON). Additionally, the canonical pro-inflammatory marker p-NF-κB was markedly reduced in the interstitium of HFD-EX (p < 0.05 vs. CON and HFD-SED). Our findings suggest that in mice with preneoplastic colorectal lesions, HFD followed by weight loss with exercise reduces muscle fibrosis and results in a higher content of muscle stem/progenitor cells. Novelty: Exercise improves muscle architecture in mice with preneoplastic colorectal lesion Exercise increases fibro/adipogenic progenitors and reduces inflammatory signaling in mice with preneoplastic colorectal lesions.
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Affiliation(s)
- Sophia Roubos
- School of Human Kinetics, Department of Cellular and Molecular Medicine, Regenerative Medicine Program, University of Ottawa, Ottawa, ON, Canada
| | - Donna D'Souza
- School of Human Kinetics, Department of Cellular and Molecular Medicine, Regenerative Medicine Program, University of Ottawa, Ottawa, ON, Canada
| | | | - Guanying Xu
- Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Nicolas Collao
- School of Human Kinetics, Department of Cellular and Molecular Medicine, Regenerative Medicine Program, University of Ottawa, Ottawa, ON, Canada
| | - Russell Emmons
- School of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Jillian Larkin
- School of Human Kinetics, Department of Cellular and Molecular Medicine, Regenerative Medicine Program, University of Ottawa, Ottawa, ON, Canada
| | - Jessica Lloyd
- School of Human Kinetics, Department of Cellular and Molecular Medicine, Regenerative Medicine Program, University of Ottawa, Ottawa, ON, Canada
| | - James J Vanhie
- School of Human Kinetics, Department of Cellular and Molecular Medicine, Regenerative Medicine Program, University of Ottawa, Ottawa, ON, Canada
| | - Yuan-Xiang Pan
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Hong Chen
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Michael De Lisio
- School of Human Kinetics, Department of Cellular and Molecular Medicine, Regenerative Medicine Program, University of Ottawa, Ottawa, ON, Canada
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Collao N, Farup J, De Lisio M. Role of Metabolic Stress and Exercise in Regulating Fibro/Adipogenic Progenitors. Front Cell Dev Biol 2020; 8:9. [PMID: 32047748 PMCID: PMC6997132 DOI: 10.3389/fcell.2020.00009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 01/10/2020] [Indexed: 12/15/2022] Open
Abstract
Obesity is a major public health concern and is associated with decreased muscle quality (i.e., strength, metabolism). Muscle from obese adults is characterized by increases in fatty, fibrotic tissue that decreases the force producing capacity of muscle and impairs glucose disposal. Fibro/adipogenic progenitors (FAPs) are muscle resident, multipotent stromal cells that are responsible for muscle fibro/fatty tissue accumulation. Additionally, they are indirectly involved in muscle adaptation through their promotion of myogenic (muscle-forming) satellite cell proliferation and differentiation. In conditions similar to obesity that are characterized by chronic muscle degeneration, FAP dysfunction has been shown to be responsible for increased fibro/fatty tissue accumulation in skeletal muscle, and impaired satellite cell function. The role of metabolic stress in regulating FAP differentiation and paracrine function in skeletal muscle is just beginning to be unraveled. Thus, the present review aims to summarize the recent literature on the role of metabolic stress in regulating FAP differentiation and paracrine function in skeletal muscle, and the mechanisms responsible for these effects. Furthermore, we will review the role of physical activity in reversing or ameliorating the detrimental effects of obesity on FAP function.
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Affiliation(s)
- Nicolas Collao
- School of Human Kinetics, University of Ottawa, Ottawa, ON, Canada
| | - Jean Farup
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Michael De Lisio
- School of Human Kinetics, University of Ottawa, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, Centre for Neuromuscular Disease, University of Ottawa, Ottawa, ON, Canada
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9
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Collao N, Rada I, Francaux M, Deldicque L, Zbinden-Foncea H. Anti-Inflammatory Effect of Exercise Mediated by Toll-Like Receptor Regulation in Innate Immune Cells – A Review. Int Rev Immunol 2019; 39:39-52. [DOI: 10.1080/08830185.2019.1682569] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Nicolas Collao
- Exercise Science Laboratory, School of Kinesiology, Faculty of Medicine, Universidad Finis Terrae, Santiago, Chile
| | - Isabel Rada
- Exercise Science Laboratory, School of Kinesiology, Faculty of Medicine, Universidad Finis Terrae, Santiago, Chile
| | - Marc Francaux
- Institute of Neuroscience, UCLouvain, Louvain-la-Neuve, Belgium
| | | | - Hermann Zbinden-Foncea
- Exercise Science Laboratory, School of Kinesiology, Faculty of Medicine, Universidad Finis Terrae, Santiago, Chile
- Centro de Salud Deportivo, Clínica Santa María, Santiago, Chile
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