Cited by 147Mitochondrial Function and PathologyMuscle Physiology and DisordersAdipose Tissue and Metabolism

Mitochondrial energetics is impaired in vivo in aged skeletal muscle

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Gouspillou, Gilles, Bourdel‐Marchasson, Isabelle, Rouland, Richard, Calmettes, Guillaume, Biran, Marc, Deschodt‐Arsac, Véronique, Miraux, Sylvain, Thiaudiere, Eric +7 more·2014·Aging Cell

Abstract

Summary: With aging, most skeletal muscles undergo a progressive loss of mass and strength, a process termed sarcopenia. Aging‐related defects in mitochondrial energetics have been proposed to be causally involved in sarcopenia. However, changes in muscle mitochondrial oxidative phosphorylation with aging remain a highly controversial issue, creating a pressing need for integrative approaches to determine whether mitochondrial bioenergetics are impaired in aged skeletal muscle. To address this issue, mitochondrial bioenergetics was first investigated in vivo in the gastrocnemius muscle of adult (6 months) and aged (21 months) male W istar rats by combining a modular control analysis approach with 31 P magnetic resonance spectroscopy measurements of energetic metabolites. Using this innovative approach, we revealed that the in vivo responsiveness (‘elasticity’) of mitochondrial oxidative phosphorylation to contraction‐induced increase in ATP demand is significantly reduced in aged skeletal muscle, a reduction especially pronounced under low contractile activities. In line with this in vivo aging‐related defect in mitochondrial energetics, we found that the mitochondrial affinity for ADP is significantly decreased in mitochondria isolated from aged skeletal muscle. Collectively, the results of this study demonstrate that mitochondrial bioenergetics are effectively altered in vivo in aged skeletal muscle and provide a novel cellular basis for this phenomenon.

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Authors
Gouspillou, G., Bourdel‐Marchasson, I., Rouland, R., Calmettes, G., Biran, M., Deschodt‐Arsac, V., Miraux, S., Thiaudiere, E., Pasdois, P., Detaille, D., Franconi, J., Babot, M., Trézéguet, V., Arsac, L., & Diolez, P.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Université de Bordeaux (FR)
  • Résonance Magnétique des Systèmes Biologiques UMR 5536 CNRS ‐ Bordeaux Segalen University Bordeaux France
  • INSERM U1045 – Cardio‐Thoracic Research Centre – and Rhythmology and Heart Modeling Institute (LIRYC) Bordeaux University Bordeaux France
Corresponding author
Gouspillou, Gilles
Venue
Aging Cell
Publisher
Wiley
Published
2013-09-19
Volume
13
Issue
1
Pages
39-48
ISSN
  • 1474-9718 (ISSN-L)
  • 1474-9726
OpenAlex
W2093524310
Cited by
147
References
42
Citations by year
2026: 4 · 2025: 11 · 2024: 18 · 2023: 12 · 2022: 6 · 2021: 13 · 2020: 15 · 2019: 11 · 2018: 6 · 2017: 13 · 2016: 14 · 2015: 15 · 2014: 7 · 2013: 2
FWCI
5.67
Type
journal article
Language
en
Open access
Locations
  • Aging Cell (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
Funders
McGill University
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
mitochondrial bioenergetics, skeletal muscle aging, sarcopenia, mitochondrial oxidative phosphorylation, ATP demand, ADP affinity, gastrocnemius, 31P NMR, contractile activity, Wistar rats
MeSH terms
Adenosine Diphosphate, Adenosine Triphosphate, Aging, Animals, Energy Metabolism, Hydrogen-Ion Concentration, Male, Mitochondria, Muscle Contraction, Oxidation-Reduction, Oxidative Phosphorylation, Phosphates, Phosphocreatine, Rats, Wistar, Muscle, Skeletal, Adenine Nucleotide Translocator 1, Rats

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