Cited by 85Mitochondrial Function and PathologyMuscle Physiology and DisordersNutrition and Health in Aging

Mitochondrial DNA deletion mutations and sarcopenia

AIKEN, JUDD, BUA, ENTELA, CAO, ZHENGJIN, LOPEZ, MARISOL, WANAGAT, JON, McKENZIE, DEBBIE, McKIERNAN, SUSAN·2002·Annals of the New York Academy of Sciences

Abstract

This manuscript summarizes our studies on mitochondrial DNA and enzymatic abnormalities that accumulate, with age, in skeletal muscle. Specific quadricep muscles, rectus femoris in the rat and vastus lateralis in the rhesus monkey, were used in these studies. These muscles exhibit considerable sarcopenia, the loss of muscle mass with age. The focal accumulation of mtDNA deletion mutations and enzymatic abnormalities in aged skeletal muscle necessitates a histologic approach in which every muscle fiber is examined for electron transport system (ETS) enzyme activity along its length. These studies demonstrate that ETS abnormalities accumulate to high levels within small regions of aged muscle fibers. Concomitant with the ETS abnormalities, we observe intrafiber atrophy and, in many cases, fiber breakage. Laser capture microdissection facilitates analysis of individual fibers from histologic sections and demonstrates a tight association between mtDNA deletion mutations and the ETS abnormalities. On the basis of these results, we propose a molecular basis for skeletal muscle fiber loss with age, a process beginning with the mtDNA deletion event and culminating with muscle fiber breakage and loss.

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Crossref · 10.1111/j.1749-6632.2002.tb02111.x

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Authors
AIKEN, J., BUA, E., CAO, Z., LOPEZ, M., WANAGAT, J., McKENZIE, D., & McKIERNAN, S.
Affiliations
University of Wisconsin–Madison (US)
Corresponding author
AIKEN, JUDD
Venue
Annals of the New York Academy of Sciences
Publisher
Wiley
Published
2002-04
Volume
959
Issue
1
Pages
412-423
ISSN
  • 0077-8923 (ISSN-L)
  • 1749-6632
OpenAlex
W2052008941
Cited by
85
References
21
Citations by year
2024: 2 · 2023: 2 · 2022: 4 · 2021: 6 · 2020: 2 · 2019: 3 · 2018: 3 · 2017: 2 · 2016: 1 · 2015: 1 · 2014: 7 · 2013: 6 · 2012: 4
FWCI
1.27
Type
journal article
Language
en
Open access
closed
Locations
  • Annals of the New York Academy of Sciences (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute on Aging (AG17543, R01AG017543, R01AG011604, P01AG011915, T32AG000213)
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 › Nutrition and Health in Aging
Keywords
sarcopenia, skeletal muscle aging, muscle fiber atrophy, laser capture microdissection, rectus femoris, vastus lateralis
MeSH terms
Aging, Animals, Electron Transport Complex IV, DNA, Mitochondrial, Mutation, Statistics as Topic, Succinate Dehydrogenase, Muscle, Skeletal, Microscopy, Confocal, Mitochondrial Diseases

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