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Hassani M, Moutachi D, Lemaitre M, Boulinguiez A, Furling D, Agbulut O, Ferry A. Beneficial effects of resistance training on both mild and severe mouse dystrophic muscle function as a preclinical option for Duchenne muscular dystrophy. PLoS One 2024; 19:e0295700. [PMID: 38457407 PMCID: PMC10923407 DOI: 10.1371/journal.pone.0295700] [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] [Received: 07/06/2023] [Accepted: 11/27/2023] [Indexed: 03/10/2024] Open
Abstract
Mechanical overloading (OVL) resulting from the ablation of muscle agonists, a supra-physiological model of resistance training, reduces skeletal muscle fragility, i.e. the immediate maximal force drop following lengthening contractions, and increases maximal force production, in mdx mice, a murine model of Duchene muscular dystrophy (DMD). Here, we further analyzed these beneficial effects of OVL by determining whether they were blocked by cyclosporin, an inhibitor of the calcineurin pathway, and whether there were also observed in the D2-mdx mice, a more severe murine DMD model. We found that cyclosporin did not block the beneficial effect of 1-month OVL on plantaris muscle fragility in mdx mice, nor did it limit the increases in maximal force and muscle weight (an index of hypertrophy). Fragility and maximal force were also ameliorated by OVL in the plantaris muscle of D2-mdx mice. In addition, OVL increased the expression of utrophin, cytoplamic γ-actin, MyoD, and p-Akt in the D2-mdx mice, proteins playing an important role in fragility, maximal force gain and muscle growth. In conclusion, OVL reduced fragility and increased maximal force in the more frequently used mild mdx model but also in D2-mdx mice, a severe model of DMD, closer to human physiopathology. Moreover, these beneficial effects of OVL did not seem to be related to the activation of the calcineurin pathway. Thus, this preclinical study suggests that resistance training could have a potential benefit in the improvement of the quality of life of DMD patients.
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Affiliation(s)
- Medhi Hassani
- Sorbonne Université, Institut de Biologie Paris-Seine, UMR CNRS 8256, INSERM ERL U1164, Biological Adaptation and Ageing, Paris, F-75013 France
| | - Dylan Moutachi
- Sorbonne Université, INSERM, Institut de Myologie, Centre de Recherche en Myologie, F-75013 Paris, France
| | | | - Alexis Boulinguiez
- Department of Biological Sciences, Royal Holloway University of London, Surrey, United Kingdom
| | - Denis Furling
- Sorbonne Université, INSERM, Institut de Myologie, Centre de Recherche en Myologie, F-75013 Paris, France
| | - Onnik Agbulut
- Sorbonne Université, Institut de Biologie Paris-Seine, UMR CNRS 8256, INSERM ERL U1164, Biological Adaptation and Ageing, Paris, F-75013 France
| | - Arnaud Ferry
- Sorbonne Université, INSERM, Institut de Myologie, Centre de Recherche en Myologie, F-75013 Paris, France
- Université Paris Cité, F-75006 Paris, France
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Moutachi D, Lemaitre M, Delacroix C, Agbulut O, Furling D, Ferry A. Valproic acid reduces muscle susceptibility to contraction-induced functional loss but increases weakness in two murine models of Duchenne muscular dystrophy. Clin Exp Pharmacol Physiol 2023. [PMID: 37381823 DOI: 10.1111/1440-1681.13804] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 05/17/2023] [Accepted: 06/07/2023] [Indexed: 06/30/2023]
Abstract
Skeletal muscles in animal models of Duchenne muscular dystrophy (DMD) are more susceptible to contraction-induced functional loss, which is not related to fatigue. Valproic acid (VPA) reportedly improves serological and histological markers of damage in dystrophin-deficient murine muscle. Here, we tested whether VPA would reduce the susceptibility to contraction-induced functional loss in two murine DMD models. Adult female mdx (mild) and D2-mdx (severe) DMD murine models were administered VPA (240 mg/kg) or saline for 7 days. Some VPA-treated mdx mice also performed voluntary running in a wheel, which is known to reduce the susceptibility to contraction-induced functional loss; that is, isometric force drop following eccentric contractions. In situ muscle function was assessed before, during and after eccentric contractions. Muscle utrophin and desmin expression were also evaluated using immunoblotting. Interestingly, VPA reduced the isometric force drop following eccentric contractions in both murine models, without change in the relative eccentric maximal force and in the expression of utrophin and desmin. VPA for 7 days combined with voluntary running had no additive effect compared to VPA alone. Furthermore, VPA reduced the absolute isometric maximal force before eccentric contractions in both murine models. The results of our study indicated that VPA in both murine DMD models reduced the susceptibility to contraction-induced functional loss but increased muscle weakness.
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Affiliation(s)
- Dylan Moutachi
- Centre de Recherche en Myologie, UMRS974, Inserm, Association Institut de Myologie, Sorbonne Université, Paris, France
| | - Mégane Lemaitre
- Centre de Recherche en Myologie, UMRS974, Inserm, Association Institut de Myologie, Sorbonne Université, Paris, France
| | - Clément Delacroix
- Centre de Recherche en Myologie, UMRS974, Inserm, Association Institut de Myologie, Sorbonne Université, Paris, France
| | - Onnik Agbulut
- Institut de Biologie Paris-Seine, UMR CNRS 8256, Inserm ERL U1164, Biological Adaptation and Ageing, Sorbonne Université, Paris, France
| | - Denis Furling
- Centre de Recherche en Myologie, UMRS974, Inserm, Association Institut de Myologie, Sorbonne Université, Paris, France
| | - Arnaud Ferry
- Centre de Recherche en Myologie, UMRS974, Inserm, Association Institut de Myologie, Sorbonne Université, Paris, France
- Université Paris Cité, Paris, France
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Monceau A, Moutachi D, Lemaitre M, Garcia L, Trollet C, Furling D, Klein A, Ferry A. Dystrophin Restoration after Adeno-Associated Virus U7-Mediated Dmd Exon Skipping Is Modulated by Muscular Exercise in the Severe D2-Mdx Duchenne Muscular Dystrophy Murine Model. Am J Pathol 2022; 192:1604-1618. [PMID: 36113555 DOI: 10.1016/j.ajpath.2022.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/18/2022] [Accepted: 07/29/2022] [Indexed: 06/15/2023]
Abstract
Duchenne muscular dystrophy (DMD) is a severe neuromuscular disease caused by Dmd mutations, resulting in the absence of dystrophin in skeletal muscle, and a greater susceptibility to damage during contraction (exercise). The current study evaluated whether voluntary exercise impacts a Dmd exon skipping and muscle physiology in a severe DMD murine model. D2-mdx mice were intramuscularly injected with an adeno-associated virus (AAV) U7 snRNA to correct Dmd reading frame, and allowed to voluntary run on a wheel for 1 month. Voluntary running did not induce muscle fiber regeneration, as indicated by the percentage of centronucleated fibers, Myh3 and Myh4 expression, and maximal force production, and thus possibly did not compromise the gene therapy approach. Voluntary running did not impact the number of viral genomes and the expression of U7 and Dmd 1 month after injection of AAV-U7 injected just before exercise initiation, but reduced the amount of dystrophin in dystrophin-expressing fibers from 80% to 65% of the muscle cross-sectional area. In conclusion, voluntary running did not induce muscle damage and had no drastic detrimental effect on the AAV gene therapy exon skipping approach in a severe murine DMD model. Moreover, these results suggest considering exercise as an additional element in the design and conception of future therapeutic approaches for DMD.
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Affiliation(s)
- Alexandra Monceau
- UMRS974 INSERM, Association of Myology Institute, Myology Center of Research, UMRS974, Sorbonne Université, Paris, France
| | - Dylan Moutachi
- UMRS974 INSERM, Association of Myology Institute, Myology Center of Research, UMRS974, Sorbonne Université, Paris, France
| | | | - Luis Garcia
- U1179 INSERM, Université de Versailles Saint-Quentin-en-Yvelines, Montigny le Bretonneux, Paris, France
| | - Capucine Trollet
- UMRS974 INSERM, Association of Myology Institute, Myology Center of Research, UMRS974, Sorbonne Université, Paris, France
| | - Denis Furling
- UMRS974 INSERM, Association of Myology Institute, Myology Center of Research, UMRS974, Sorbonne Université, Paris, France
| | - Arnaud Klein
- UMRS974 INSERM, Association of Myology Institute, Myology Center of Research, UMRS974, Sorbonne Université, Paris, France
| | - Arnaud Ferry
- UMRS974 INSERM, Association of Myology Institute, Myology Center of Research, UMRS974, Sorbonne Université, Paris, France; Faculty of Science Sport, Université Paris Cité, Paris, France.
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