Cited by 170Genetics, Aging, and Longevity in Model OrganismsMitochondrial Function and PathologyExercise and Physiological Responses

Effects of caloric restriction on mitochondrial function and gene transcripts in rat muscle

Sreekumar, R., Unnikrishnan, J., Fu, A., Nygren, J., Short, K. R., Schimke, J., Barazzoni, R., Nair, K. Sreekumaran·2002·American Journal of Physiology-Endocrinology and Metabolism

Abstract

Rodent skeletal muscle mitochondrial DNA has been shown to be a potential site of oxidative damage during aging. Caloric restriction (CR) is reported to reduce oxidative stress and prolong life expectancy in rodents. Gene expression profiling and measurement of mitochondrial ATP production capacity were performed in skeletal muscle of male rats after feeding them either a control diet or calorie-restricted diet (60% of control diet) for 36 wk to determine the potential mechanism of the beneficial effects of CR. CR enhanced the transcripts of genes involved in reactive oxygen free radical scavenging function, tissue development, and energy metabolism while decreasing expression of those genes involved in signal transduction, stress response, and structural and contractile proteins. Real-time PCR measurments confirmed the changes in transcript levels of cytochrome- c oxidase III, superoxide dismutase (SOD)1, and SOD2 that were noted by the microarray approach. Mitochondrial ATP production and citrate synthase were unaltered by the dietary changes. We conclude that CR alters transcript levels of several genes in skeletal muscle and that mitochondrial function in skeletal muscle remains unaltered by the dietary intervention. Alterations in transcripts of many genes involved in reactive oxygen scavenging function may contribute to the increase in longevity reported with CR.

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Registry

Crossref · 10.1152/ajpendo.00387.2001

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25 of 25 references verified0 citation errors · 0 not checkable

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  • Thirty-six weeks of 60% caloric restriction enhances transcription levels of genes involved in ROS scavenger function and energy metabolism without altering mitochondrial function and enzyme activities.

    “Similarly, a separate study reports that a 36 weeks of 60% caloric restriction enhances the transcription levels of genes involved in ROS scavenger function and energy metabolism without altering mitochondrial function and enzyme activities [75].”
  • These responses are not observed in all studies of high-fat feeding.

    “However, these responses are not observed in all studies of high-fat feeding; in fact, some studies demonstrate that high-fat feeding is associated with increased numbers of mitochondrial protein and DNA content, potentially mediated by chronic fatty acid activation of PPAR nuclear receptors (130 -132).”
  • Some studies demonstrate that high-fat feeding is associated with increased numbers of mitochondrial protein and DNA content, potentially mediated by chronic fatty acid activation of PPAR nuclear receptors.

    “However, these responses are not observed in all studies of high-fat feeding; in fact, some studies demonstrate that high-fat feeding is associated with increased numbers of mitochondrial protein and DNA content, potentially mediated by chronic fatty acid activation of PPAR nuclear receptors (130 -132).”

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Authors
Sreekumar, R., Unnikrishnan, J., Fu, A., Nygren, J., Short, K. R., Schimke, J., Barazzoni, R., & Nair, K. S.
Affiliations
Mayo Clinic (US)
Venue
American Journal of Physiology-Endocrinology and Metabolism
Published
2002-07-01
Volume
283
Issue
1
Pages
E38-E43
ISSN
  • 0193-1849 (ISSN-L)
  • 1522-1555
OpenAlex
W2161680769
Cited by
170
References
25
Citations by year
2025: 1 · 2024: 3 · 2023: 4 · 2022: 3 · 2021: 1 · 2020: 1 · 2019: 2 · 2018: 1 · 2017: 4 · 2016: 1 · 2015: 4 · 2014: 5 · 2013: 4 · 2012: 13
FWCI
3.91
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Physiology-Endocrinology and Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • ArTS Archivio della ricerca di Trieste (University of Trieste https://www.units.it/) (submittedVersion)
Funders
  • National Institute on Aging (R01‐AG09531, R01AG009531)
  • National Institute of Diabetes and Digestive and Kidney Diseases (T32-DK-07352, T32DK007352)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
Keywords
caloric restriction, skeletal muscle, mitochondrial function, gene expression, oxidative stress, reactive oxygen species scavenging, superoxide dismutase, citrate synthase, mitochondrial ATP production, longevity, aging, oxidative damage
MeSH terms
Uncoupling Protein 2, Uncoupling Protein 3, Superoxide Dismutase-1, Superoxide Dismutase 2, Adenosine Triphosphate, Animals, Body Weight, Energy Intake, Carrier Proteins, Citrate (si)-Synthase, Electron Transport Complex IV, Ion Channels, Male, Mitochondria, Proteins, RNA, Messenger, Superoxide Dismutase, Blotting, Northern, Polymerase Chain Reaction, Rats, Sprague-Dawley, Muscle, Skeletal, Oligonucleotide Array Sequence Analysis, Gene Expression Profiling, Mitochondrial Proteins, Membrane Transport Proteins, Rats

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