Cited by 71Muscle Physiology and DisordersExercise and Physiological ResponsesRedox biology and oxidative stress

Aging increases the oxidation of dichlorohydrofluorescein in single isolated skeletal muscle fibers at rest, but not during contractions

Open access
Palomero, Jesus, Vasilaki, Aphrodite, Pye, Deborah, McArdle, Anne, Jackson, Malcolm J.·2013·American Journal of Physiology-Regulatory, Integrative and Comparative Physiology

Abstract

An increase in the activity of reactive oxygen species (ROS) has been implicated in the mechanisms of loss of skeletal muscle that occurs during aging, but few studies have attempted to directly assess activities in intact muscle fibers. The current project used the nonspecific fluorescent probe for ROS and reactive nitrogen species, 5-(and-6)-chloromethyl-2',7'-dichlorodihydrofluorescein (CM-DCFH), in single, isolated, mature skeletal muscle fibers from adult and old mice in addition to biochemical measurements of key regulatory proteins for ROS in muscles of these animals. Data confirmed the changes in key regulatory processes for ROS (increased glutathione peroxidase 1 and catalase activities and reduced total glutathione content) previously reported in muscle from old mice and showed increased CM-DCFH oxidation in muscle fibers from old mice at rest and indicate that these changes are likely due to an increase in generation of oxidants rather than a lack of scavenging capacity. The increased CM-DCFH oxidation persisted even when cellular defenses against oxidants were increased by loading fibers from young and old mice with glutathione. During contractile activity, and in contrast to the increase observed in fibers from young mice, there was no further increase in CM-DCFH oxidation in muscle fibers from old mice. These data also suggest that the defect in short-term adaptations to contractions that occurs in old mice may be related to a diminished, or absent, increase in the muscle generation of ROS and/or reactive nitrogen species that normally accompanies contractile activity in young mice.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1152/ajpregu.00530.2012

Cites

62 of 62 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. [1]Anderson ME Measurement of antioxidants: glutathione. In: Free Radicals, A Practical Approach, edited by Punchard NA Kelly FJ Oxford, UK: IRL Press, 1996, p. 213– 226

Cited by

Sorted by citations

Authors
Palomero, J., Vasilaki, A., Pye, D., McArdle, A., & Jackson, M. J.
Affiliations
  • Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, United Kingdom
  • University of Liverpool (GB)
Corresponding author
Jackson, Malcolm J.
Venue
American Journal of Physiology-Regulatory, Integrative and Comparative Physiology
Published
2013-08-15
Volume
305
Issue
4
Pages
R351-R358
ISSN
  • 0363-6119 (ISSN-L)
  • 1522-1490
OpenAlex
W2049797752
Cited by
71
References
62
Citations by year
2026: 6 · 2025: 7 · 2024: 8 · 2023: 4 · 2022: 7 · 2021: 8 · 2020: 7 · 2019: 1 · 2018: 5 · 2017: 5 · 2016: 6 · 2015: 1 · 2014: 4 · 2013: 2
FWCI
1.93
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • American Journal of Physiology-Regulatory, Integrative and Comparative Physiology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Hispana (publishedVersion, cc-by-nc-nd)
  • Gredos (University of Salamanca) (submittedVersion, cc-by-nc-nd)
Funders
  • Wellcome Trust (073263 ⁄ Z ⁄ 03)
  • Medical Research Council (MR/K006312/1)
  • National Institute on Aging (P01AG020591, AG020591-06)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
skeletal muscle aging, reactive oxygen species, reactive nitrogen species, isolated muscle fibers, glutathione peroxidase 1, catalase, glutathione, muscle contraction, oxidative stress, muscle atrophy
MeSH terms
Glutathione Peroxidase GPX1, Adaptation, Physiological, Age Factors, Aging, Animals, Catalase, Female, Fluoresceins, Fluorescent Dyes, Glutathione, Glutathione Peroxidase, Mice, Inbred C57BL, Muscle Contraction, Oxidation-Reduction, Time Factors, Oxidants, Reactive Oxygen Species, Oxidative Stress, Muscle Fibers, Skeletal, Reactive Nitrogen Species, Mice

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review