Evidence map›Paper›PMID 23697797›Full record

ArticleAmerican journal of physiology. Regulatory, integrative and comparative physiology2013

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

Jesus Palomero, Aphrodite Vasilaki, Deborah Pye, Anne McArdle, Malcolm J Jackson

Open access · hybridAbstract readComparative Study
In one paragraph

Article in American journal of physiology. Regulatory, integrative and comparative physiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
4.1field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

43 citing papers in PubMed, 68 citations in OpenAlex.

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  14. Cell-Based Therapies for Degenerative Musculoskeletal Diseases.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2023
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Jesus PalomeroInstitute of Ageing and Chronic Disease, University of Liverpool, Liverpool, United Kingdom.
Aphrodite Vasilaki
Deborah Pye
Anne McArdle
Malcolm J Jackson
University of Liverpool · GB

Funding

TRANSGENIC ANIMAL CORE SUBCONTRACT WITH UTHSC AT SAN ANTONIOP01AG020591 · NIA · UNIVERSITY OF TEXAS HLTH SCI CTR SAN ANT · PI BROOKS, SUSAN V · 2002 to 2014
$10.7M
Medical Research Council G0700919Medical Research Council MR/K006312/1NIA NIH HHS AG020591-06Wellcome Trust 073263/Z/03
6 · The paper itself

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.

Indexed as

Muscle ContractionAdaptation, PhysiologicalAge FactorsAgingAnimalsCatalaseFemaleFluoresceinsFluorescent DyesGlutathioneGlutathione PeroxidaseGlutathione Peroxidase GPX1MiceMice, Inbred C57BLMuscle Fibers, SkeletalOxidants2',7'-dichlorodihydrofluoresceinCatalaseFluoresceinsFluorescent DyesGlutathioneGlutathione PeroxidaseGlutathione Peroxidase GPX1Gpx1 protein, mouseOxidantsReactive Nitrogen SpeciesReactive Oxygen Speciesmusclereactive oxygensingle fiber

Identifiers

PMID23697797
PMCPMC3833391
OpenAlexW2049797752

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.