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Garneau L, Mulvihill EE, Smith SR, Sparks LM, Aguer C. Myokine Secretion following an Aerobic Exercise Intervention in Individuals with Type 2 Diabetes with or without Exercise Resistance. Int J Mol Sci 2024; 25:4889. [PMID: 38732106 PMCID: PMC11084395 DOI: 10.3390/ijms25094889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/19/2024] [Accepted: 04/25/2024] [Indexed: 05/13/2024] Open
Abstract
Type 2 diabetes (T2D) is characterized by muscle metabolic dysfunction that exercise can minimize, but some patients do not respond to an exercise intervention. Myokine secretion is intrinsically altered in patients with T2D, but the role of myokines in exercise resistance in this patient population has never been studied. We sought to determine if changes in myokine secretion were linked to the response to an exercise intervention in patients with T2D. The participants followed a 10-week aerobic exercise training intervention, and patients with T2D were grouped based on muscle mitochondrial function improvement (responders versus non-responders). We measured myokines in serum and cell-culture medium of myotubes derived from participants pre- and post-intervention and in response to an in vitro model of muscle contraction. We also quantified the expression of genes related to inflammation in the myotubes pre- and post-intervention. No significant differences were detected depending on T2D status or response to exercise in the biological markers measured, with the exception of modest differences in expression patterns for certain myokines (IL-1β, IL-8, IL-10, and IL-15). Further investigation into the molecular mechanisms involving myokines may explain exercise resistance with T2D; however, the role in metabolic adaptations to exercise in T2D requires further investigation.
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Affiliation(s)
- Léa Garneau
- Faculty of Medicine, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (L.G.); (E.E.M.)
- Institut du Savoir Montfort, Ottawa, ON K1K 0T2, Canada
| | - Erin E. Mulvihill
- Faculty of Medicine, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (L.G.); (E.E.M.)
- University of Ottawa Heart Institute, Ottawa, ON K1Y 4W7, Canada
| | - Steven R. Smith
- Translational Research Institute for Metabolism and Diabetes, AdventHealth Orlando, Orlando, FL 32804, USA; (S.R.S.); (L.M.S.)
| | - Lauren M. Sparks
- Translational Research Institute for Metabolism and Diabetes, AdventHealth Orlando, Orlando, FL 32804, USA; (S.R.S.); (L.M.S.)
| | - Céline Aguer
- Faculty of Medicine, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (L.G.); (E.E.M.)
- Institut du Savoir Montfort, Ottawa, ON K1K 0T2, Canada
- Faculty of Medicine and Health Sciences, Department of Physiology, McGill University–Campus Outaouais, Gatineau, QC J8V 3T4, Canada
- Faculty of Health Sciences, School of Human Kinetics, University of Ottawa, Ottawa, ON K1N 6N5, Canada
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Diaz-Castro J, Reyes-Olavarría D, Toledano JM, Puche-Juarez M, Garcia-Vega JE, Ochoa JJ, Moreno-Fernandez J. Assessment of muscle endocrine function and inflammatory signalling in male school children following a physical activity programme. Clin Nutr 2024; 43:936-942. [PMID: 38422951 DOI: 10.1016/j.clnu.2024.02.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 02/20/2024] [Accepted: 02/22/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND & AIMS Regular and planned physical activity can diminish the risk of numerous illnesses. However, school children and teenagers often exercise intermittently and for brief periods, restricting potential benefits. Furthermore, previous studies mainly focused on body composition, without providing molecular mechanisms elucidating the role of physical activity in muscle tissue and inflammatory signalling. The objective of this study was to determine the effect of a vigorous physical activity intervention on endocrine muscle function and cytokine output in children. METHODS 103 boys were divided into two groups: control (n = 51, did not perform additional physical activity) and exercise (n = 52, performed vigorous physical activity). Body composition measurements, endocrine muscle function and inflammatory signalling biomarkers were assessed at enrolment and after 6 months of intervention. RESULTS No statistical significance was found for fractalkine, oncostatin, EGF, TNF-α and eotaxin. However, LIF, FBAP3, IL-6, FGF21 and IL-15 increased in the exercise group at the end of the protocol, though myostatin got decreased. In contrast, IFN-γ was increased in the exercise group at the beginning and end of the exercise protocol, IL-10 was also increased in this group, IL-1α decreased in the exercise group before and after the exercise protocol, and IP-10 and MCP-1 also decreased in the exercise group. CONCLUSION It can be affirmed that a physical activity programme for boys was shown to produce changes in body composition (decreased fat mass, increased lean mass) and in markers of endocrine muscle function and cytokine release. It is possible that these changes, if sustained, could reduce the risk of chronic disease.
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Affiliation(s)
- Javier Diaz-Castro
- Department of Physiology, Faculty of Pharmacy, Campus Universitario de Cartuja, University of Granada, 18071 Granada, Spain; Institute of Nutrition and Food Technology "José Mataix Verdú", University of Granada, 18071 Granada, Spain; Instituto de Investigación Biosanitaria (IBS), 18016 Granada, Spain
| | - Daniela Reyes-Olavarría
- Department of Physiology, Faculty of Pharmacy, Campus Universitario de Cartuja, University of Granada, 18071 Granada, Spain; Institute of Nutrition and Food Technology "José Mataix Verdú", University of Granada, 18071 Granada, Spain; Nutrition and Food Sciences Ph.D. Program, University of Granada, 18071 Granada, Spain; Department of Physical Education, Sport, and Recreation, Universidad de La Frontera, Temuco 4780000, Chile
| | - Juan M Toledano
- Department of Physiology, Faculty of Pharmacy, Campus Universitario de Cartuja, University of Granada, 18071 Granada, Spain; Institute of Nutrition and Food Technology "José Mataix Verdú", University of Granada, 18071 Granada, Spain; Nutrition and Food Sciences Ph.D. Program, University of Granada, 18071 Granada, Spain.
| | - María Puche-Juarez
- Department of Physiology, Faculty of Pharmacy, Campus Universitario de Cartuja, University of Granada, 18071 Granada, Spain; Institute of Nutrition and Food Technology "José Mataix Verdú", University of Granada, 18071 Granada, Spain; Nutrition and Food Sciences Ph.D. Program, University of Granada, 18071 Granada, Spain.
| | - Jose Eulogio Garcia-Vega
- Department of Physiology, Faculty of Pharmacy, Campus Universitario de Cartuja, University of Granada, 18071 Granada, Spain; Institute of Nutrition and Food Technology "José Mataix Verdú", University of Granada, 18071 Granada, Spain; Nutrition and Food Sciences Ph.D. Program, University of Granada, 18071 Granada, Spain
| | - Julio J Ochoa
- Department of Physiology, Faculty of Pharmacy, Campus Universitario de Cartuja, University of Granada, 18071 Granada, Spain; Institute of Nutrition and Food Technology "José Mataix Verdú", University of Granada, 18071 Granada, Spain; Instituto de Investigación Biosanitaria (IBS), 18016 Granada, Spain
| | - Jorge Moreno-Fernandez
- Department of Physiology, Faculty of Pharmacy, Campus Universitario de Cartuja, University of Granada, 18071 Granada, Spain; Institute of Nutrition and Food Technology "José Mataix Verdú", University of Granada, 18071 Granada, Spain; Instituto de Investigación Biosanitaria (IBS), 18016 Granada, Spain.
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Hwangbo H, Kim MY, Ji SY, Kim DH, Park BS, Jeong SU, Yoon JH, Kim TH, Kim GY, Choi YH. A Mixture of Morus alba and Angelica keiskei Leaf Extracts Improves Muscle Atrophy by Activating the PI3K/Akt/mTOR Signaling Pathway and Inhibiting FoxO3a In Vitro and In Vivo. J Microbiol Biotechnol 2023; 33:1635-1647. [PMID: 37674382 PMCID: PMC10772550 DOI: 10.4014/jmb.2306.06012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/04/2023] [Accepted: 08/08/2023] [Indexed: 09/08/2023]
Abstract
Muscle atrophy, which is defined as a decrease in muscle mass and strength, is caused by an imbalance between the anabolism and catabolism of muscle proteins. Thus, modulating the homeostasis between muscle protein synthesis and degradation represents an efficient treatment approach for this condition. In the present study, the protective effects against muscle atrophy of ethanol extracts of Morus alba L. (MA) and Angelica keiskei Koidz. (AK) leaves and their mixtures (MIX) were evaluated in vitro and in vivo. Our results showed that MIX increased 5-aminoimidazole-4-carboxamide ribonucleotide-induced C2C12 myotube thinning, and enhanced soleus and gastrocnemius muscle thickness compared to each extract alone in dexamethasone-induced muscle atrophy Sprague Dawley rats. In addition, although MA and AK substantially improved grip strength and histological changes for dexamethasone-induced muscle atrophy in vivo, the efficacy was superior in the MIX-treated group. Moreover, MIX further increased the expression levels of myogenic factors (MyoD and myogenin) and decreased the expression levels of E3 ubiquitin ligases (atrogin-1 and muscle-specific RING finger protein-1) in vitro and in vivo compared to the MA- and AK-alone treatment groups. Furthermore, MIX increased the levels of phosphorylated phosphoinositide 3-kinase (PI3K), protein kinase B (Akt), and mammalian target of rapamycin (mTOR) that were reduced by dexamethasone, and downregulated the expression of forkhead box O3 (FoxO3a) induced by dexamethasone. These results suggest that MIX has a protective effect against muscle atrophy by enhancing muscle protein anabolism through the activation of the PI3K/Akt/mTOR signaling pathway and attenuating catabolism through the inhibition of FoxO3a.
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Affiliation(s)
- Hyun Hwangbo
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea
| | - Min Yeong Kim
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea
| | - Seon Yeong Ji
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea
| | - Da Hye Kim
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea
| | - Beom Su Park
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea
| | - Seong Un Jeong
- Hamsoa Pharmaceutical Co., Ltd., Iksan 54524, Republic of Korea
| | - Jae Hyun Yoon
- Hamsoa Pharmaceutical Co., Ltd., Iksan 54524, Republic of Korea
| | - Tae Hee Kim
- Hamsoa Pharmaceutical Co., Ltd., Iksan 54524, Republic of Korea
| | - Gi-Young Kim
- Department of Marine Life Science, Jeju National University, Jeju 63243, Republic of Korea
| | - Yung Hyun Choi
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea
- Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan 47227, Republic of Korea
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Safdar M, Wessells RJ. Octopamine Rescues Endurance and Climbing Speed in Drosophila Clkout Mutants with Circadian Rhythm Disruption. Cells 2023; 12:2515. [PMID: 37947593 PMCID: PMC10648926 DOI: 10.3390/cells12212515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/18/2023] [Accepted: 10/23/2023] [Indexed: 11/12/2023] Open
Abstract
Circadian rhythm disturbances are associated with various negative health outcomes, including an increasing incidence of chronic diseases with high societal costs. While exercise can protect against the negative effects of rhythm disruption, it is not available to all those impacted by sleep disruptions, in part because sleep disruption itself reduces exercise capacity. Thus, there is a need for therapeutics that bring the benefits of exercise to this population. Here, we investigate the relationship between exercise and circadian disturbances using a well-established Drosophila model of circadian rhythm loss, the Clkout mutant. We find that Clkout causes reduced exercise capacity, measured as post-training endurance, flight performance, and climbing speed, and these phenotypes are not rescued by chronic exercise training. However, exogenous administration of a molecule known to mediate the effects of chronic exercise, octopamine (OA), was able to effectively rescue mutant exercise performance, including the upregulation of other known exercise-mediating transcripts, without restoring the circadian rhythms of mutants. This work points the way toward the discovery of novel therapeutics that can restore exercise capacity in patients with rhythm disruption.
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Affiliation(s)
| | - Robert J. Wessells
- Department of Physiology, School of Medicine, Wayne State University, Detroit, MI 48201, USA;
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