Cited by 223Muscle Physiology and DisordersMitochondrial Function and PathologyNutrition and Health in Aging

Mitochondrial abnormalities are more frequent in muscles undergoing sarcopenia

Bua, Entela A., McKiernan, Susan H., Wanagat, Jonathan, McKenzie, Debbie, Aiken, Judd M.·2002·Journal of Applied Physiology

Abstract

The hypothesis that the accumulation of electron transport system (ETS) abnormalities and sarcopenia are linked was investigated. Vastus lateralis, soleus, and adductor longus muscles were studied in 5-, 18-, and 36-mo-old male Fischer 344 × Brown Norway F 1 hybrid rats. A significant decrease in soleus and vastus lateralis muscle mass was observed with age. Adductor longus was resistant to muscle mass loss. Multiple serial sections were analyzed for the activities of cytochrome- c oxidase (COX) and succinate dehydrogenase (SDH). The number of fibers exhibiting a COX−/SDH++ phenotype increased with age in both vastus lateralis and soleus muscles. No ETS-abnormal fibers were identified in adductor longus at any age. Cross-sectional area of ETS-abnormal fibers decreased in the abnormal region (region displaying COX−/SDH++ phenotype), whereas control fibers did not. The vastus lateralis muscle, which undergoes a high degree of sarcopenia, exhibited more ETS abnormalities and associated fiber loss than the soleus and adductor longus muscles, which are more resistant to sarcopenia, suggesting a direct association between ETS abnormalities and fiber loss.

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Crossref · 10.1152/japplphysiol.01102.2001

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Authors
Bua, E. A., McKiernan, S. H., Wanagat, J., McKenzie, D., & Aiken, J. M.
Affiliations
  • Department of Animal Health and Biomedical Sciences and
  • University of Wisconsin–Madison (US)
Venue
Journal of Applied Physiology
Published
2002-06-01
Volume
92
Issue
6
Pages
2617-2624
ISSN
  • 0161-7567 (ISSN-L)
  • 8750-7587
  • 1522-1601
OpenAlex
W2154532798
Cited by
223
References
65
Citations by year
2025: 4 · 2024: 5 · 2023: 5 · 2022: 9 · 2021: 11 · 2020: 11 · 2019: 8 · 2018: 7 · 2017: 4 · 2016: 7 · 2015: 9 · 2014: 12 · 2013: 8 · 2012: 10
FWCI
3.71
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Applied Physiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute on Aging (P01-AG-11915, R01 AG-17543, R01AG017543, R01AG011604, P01AG011915, R01 AG-11604)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
Keywords
sarcopenia, mitochondrial abnormalities, electron transport chain, cytochrome c oxidase, succinate dehydrogenase, muscle fiber loss, muscle atrophy, aging, vastus lateralis, soleus muscle, adductor longus, rat skeletal muscle
MeSH terms
Animals, Body Weight, Electron Transport Complex IV, Electron Transport, Female, Male, Mitochondria, Muscle, Muscular Atrophy, Organ Size, Rats, Inbred BN, Rats, Inbred F344, Succinate Dehydrogenase, Muscle, Skeletal, Muscle Fibers, Fast-Twitch, Muscle Fibers, Slow-Twitch, Anatomy, Cross-Sectional, Rats

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